Foam delivery and recovery system with rejuvenating accessory tools

Abstract

A foam delivery and recovery system (10) includes a suction source (18) configured to create a vacuum effect. The recovery tank (20) is in fluid communication with the suction source (18) for containing material trapped by the suction source (18). The supply tank (22) contains a cleaning fluid. A pump assembly (28) is operably coupled to the supply canister (22) and configured to generate foam from the cleaning fluid. The applicator tool (14) includes a suction nozzle (46) in fluid communication with a suction source (18). The distributor (52) is in fluid communication with the pump assembly (28) via a conduit (70). The distributor (52) defines a chamber (84) having an inlet (86) and an outlet (88). A mesh screen (78) is disposed within the chamber (84). The extrusion (96) manifold is fluidly coupled with the outlet (88). The extrusion (96) manifold defines an opening through which the foam is dispensed. A user interface (104) is operably coupled with the pump assembly (28) for controlling dispensing of the foam through the applicator tool (14).

Description

[0001] Cross-reference to related applications

[0002] This application claims priority to U.S. Provisional Application No. 63 / 515,435, filed July 25, 2023, entitled “FOAM DELIVERY AND RECOVERYSYSTEM WITH REFRESH ACCESSORY TOOL,” the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0003] This disclosure generally relates to a foam delivery and recovery system, and more specifically to a foam delivery and recovery system having a padding renewal accessory tool that can be selectively used with a suction cleaning device. Background Technology

[0004] Cleaning products can be attached with a pole to selectively connect with accessory tools to provide cleaning functionality. Additionally, cleaning products can utilize a variety of systems and components (with or without accessories) to provide cleaning functionality to surfaces. Summary of the Invention

[0005] According to one aspect of this disclosure, a cleaning device includes a supply tank configured to store a cleaning fluid. At least one pump is in fluid communication with the supply tank. The at least one pump is configured to generate foam from the cleaning fluid and guide the cleaning fluid along a foam dispensing path. An applicator tool is operatively coupled to the at least one pump. The applicator tool defines a portion of the foam dispensing path for dispensing the foam. A user interface controls the dispensing of the foam through the applicator tool. The applicator tool includes a chamber having an inlet and an outlet in fluid communication with the at least one pump. A first screen is disposed within the chamber. A second screen is disposed within the chamber and downstream of the first screen. A spacer is disposed between the first screen and the second screen. An extrusion manifold is in fluid communication with the outlet of the chamber. The extrusion manifold defines at least one opening through which the foam is dispensed in response to interaction with the user interface.

[0006] According to one aspect of this disclosure, a cleaning device includes a supply tank configured to store a foaming cleaning chemical. At least one pump is in fluid communication with the supply tank and configured to generate foam from the foaming cleaning chemical. A dispenser is operatively coupled to the at least one pump for dispensing the foam. A conduit provides fluid communication between the at least one pump and the dispenser. A user interface controls the dispensing of the foam through the dispenser. The dispenser includes a frame defining a chamber having an inlet and an outlet in fluid communication with the conduit. At least one mesh screen is operatively coupled to the conduit to generate bubbles in the foam. An extrusion manifold defines at least one opening in fluid communication with the outlet of the chamber for extruding the foam onto a surface to be cleaned in response to interaction with the user interface. Spacer protrusions extend from the frame in a direction parallel to the direction of movement of the foam through the chamber to define the height of the foam band.

[0007] According to one aspect of this disclosure, a foam delivery and recovery system includes a suction source configured to generate a vacuum effect. A recovery tank is in fluid communication with the suction source for containing material captured by the suction source. At least one supply tank contains a cleaning fluid. A pump assembly is operatively coupled to the supply tank and configured to generate foam from the cleaning fluid. At least one screen is configured to generate the foam. An applicator tool includes a suction nozzle in fluid communication with the suction source. A dispenser is in fluid communication with the pump assembly via a conduit. The dispenser defines a chamber having an inlet and an outlet. An extrusion manifold is in fluid communication with the outlet. The extrusion manifold defines at least one opening through which the foam is dispensed. A user interface is operatively coupled to the pump assembly for controlling the dispensing of the foam through the applicator tool.

[0008] Those skilled in the art will further understand and appreciate these and other features, advantages and purposes of this disclosure by referring to the following specification, claims and drawings. Attached Figure Description

[0009] In the attached diagram: Figure 1A This is a side perspective view of a portable cleaning device with a foam renewing applicator tool according to the present disclosure; Figure 1B This is a side perspective view of an upright cleaning device with a foam renewing applicator tool according to the present disclosure; Figure 2A This is a schematic diagram of a foam delivery and recovery system with an applicator tool according to the present disclosure, wherein a tank for foaming chemicals, a liquid pump and an air pump for generating foam are operatively connected to cleaning equipment and dispense foam via the applicator tool. Figure 2BThe present disclosure discloses a foam delivery and recovery system with an applicator tool, wherein a tank for a foaming chemical and a liquid pump for generating foam are operatively connected to a cleaning device, and an air pump is operatively connected to the applicator tool and dispenses foam via the applicator tool. Figure 2C This is a schematic diagram of a foam delivery and recovery system with an applicator tool according to the present disclosure, wherein a tank for a foaming chemical, a liquid pump and an air pump for generating foam are operatively connected to the applicator tool, which dispenses foam. Figure 2D The present disclosure discloses a foam delivery and recovery system with an applicator tool, wherein a tank for a foaming chemical and a foam pump for generating foam are operatively coupled to the applicator tool, which dispenses foam. Figure 3 This is a block diagram of a foam delivery and recycling system according to this disclosure; Figure 4 This is a partial side perspective view of a dual-nozzle applicator tool dispensing foam strips according to the present disclosure; Figure 5 This is a side front sectional view of the dual-nozzle applicator tool and lever of the cleaning device according to the present disclosure, showing the fluid recovery path, foam dispensing path and liquid dispensing path; Figure 6 This is a bottom perspective view of a dual-nozzle applicator tool having a liquid pump and an air pump for generating foam, according to the present disclosure. Figure 7 This is a bottom perspective view of a dual-nozzle applicator tool having a bubble pump for generating foam, according to the present disclosure; Figure 8 This is a top perspective partial sectional view of the dispenser of a dual-nozzle applicator tool connected to a pump assembly and an auxiliary recovery tank, according to the present disclosure. Figure 9 This is an exploded side perspective view of the dispenser of the dual-nozzle applicator tool according to the present disclosure; Figure 10 This is a side perspective view of the pump foaming applicator tool according to this disclosure; Figure 11 This is a bottom perspective view of the pump foam applicator tool, shown in dashed lines according to the external support features of this disclosure; Figure 12 The side front sectional view of the pump foam applicator tool and rod of the cleaning equipment according to this disclosure shows the foam dispensing path and the fluid recovery path; Figure 13 The external support features according to this disclosure are shown in dashed lines to show the pump foaming applicator tool for fluid pumps and air pumps. Figure 14The external support features of the foam pump are shown in dashed lines to illustrate the side perspective view of the foam pump foam applicator tool. Figure 15 This is a side perspective view of the manual pumping applicator tool according to this disclosure; Figure 16 This is a side perspective view of a manual pumping applicator tool, shown in dashed lines according to the external support features of this disclosure. Figure 17 The image is a side sectional view of the manual pumping applicator tool and lever of the cleaning equipment according to this disclosure, showing the foam dispensing path and the fluid recovery path; Figure 18 This is a side perspective view of an auxiliary supply tank with a manual air pump according to this disclosure; Figure 19 This is a side perspective view of the multi-fluid applicator tool according to this disclosure; Figure 20 This is a schematic diagram of a multi-fluid applicator tool, shown in dashed lines according to the external support features of this disclosure, to illustrate the foam dispensing path. Figure 21 This is a schematic diagram of a multi-fluid applicator tool, shown in dashed lines according to the external support features of this disclosure, to illustrate the liquid dispensing path. Figure 22 This is a schematic diagram of a multi-fluid applicator tool, shown in dashed lines according to the external support features of this disclosure, and with the slider controlled in the open position to show the fluid recovery path. Figure 23 This is a schematic diagram of a multi-fluid applicator tool, shown in dashed lines according to the external support features of this disclosure, and controlling the slider to be in the closed position; Figure 24 This is a side perspective view of the scrubbing applicator tool according to this disclosure; Figure 25 This is a bottom plan view of a scrubbing applicator tool with a mesh outlet provided within the scrubbing assembly, according to the present disclosure; Figure 26 The diagram illustrates the foam dispensing path and the liquid dispensing path of the scrubbing applicator tool according to this disclosure; Figure 27 This is a side perspective view of the turbine applicator tool according to this disclosure; Figure 28 This is a schematic diagram of a turbine applicator tool that engages with a rod of a cleaning device according to the present disclosure, showing the rotating air path, foam dispensing path, and liquid dispensing path; Figure 29 This is a schematic diagram of a turbine applicator tool that engages with a rod of a cleaning device according to the present disclosure, wherein a control slider is in the "foam" position to define the path of the airflow that generates power; Figure 30 This is a schematic diagram of a turbine applicator tool that engages with a rod of a cleaning device according to the present disclosure, wherein a control slider is in a "suction" position to define a fluid recovery path; Figure 31 This is a schematic diagram of a turbine applicator tool that engages with a rod of a cleaning device according to the present disclosure, showing a rotating brush and belt driven by a turbine via gears; Figure 32 This is a side perspective view of the manually activated applicator tool according to this disclosure; Figure 33 This is a side perspective sectional view of a manually activated applicator tool with a foam-generating handle according to the present disclosure. Figure 34 This is a side front view of the foam applicator tool according to this disclosure; Figure 35 This is a front view of the foam applicator tool according to this disclosure; Figure 36 This is a rear plan view of the foam applicator tool according to this disclosure; Figure 37 It is based on the section taken along line XXXVII-XXXVII of this disclosure. Figure 34 A cross-sectional view of a foam applicator tool; Figure 38 This is a partially exploded side perspective view of the foam generating and dispensing components of the foam tool according to this disclosure; Figure 39 This is a partially exploded side perspective view of a dispenser for foam tools according to this disclosure; and Figure 40 This is a schematic diagram of the electrical components of a foam tool according to this disclosure. Detailed Implementation

[0010] The embodiments illustrated in this invention primarily consist of a combination of method steps and equipment components associated with a foam delivery and recycling system having foam refurbishment attachments. Therefore, equipment components and method steps have been indicated by conventional symbols in the accompanying drawings where appropriate, with only those specific details relevant to understanding the embodiments of this disclosure shown so as not to obscure the disclosure by details that would readily be apparent to one of ordinary skill in the art benefiting from the description herein. Furthermore, the same reference numerals denote the same elements in the specification and drawings.

[0011] For the purposes of this description, the terms “up,” “down,” “right,” “left,” “back,” “front,” “vertical,” “horizontal,” and their derivatives should be used interchangeably with those used in this document. Figure 1AThe disclosure relates to the orientation described herein. Unless otherwise stated, the term "front" refers to the surface closest to the intended viewer, and the term "back" refers to the surface furthest from the intended viewer. However, it should be understood that various alternative orientations may be adopted in this disclosure unless the opposite is expressly indicated. It should also be understood that the specific structures and processes shown in the accompanying drawings and described in the following specification are merely exemplary embodiments of the inventive concept defined in the appended claims. Therefore, specific dimensions and other physical characteristics associated with the embodiments disclosed herein should not be considered limiting unless expressly stated in the claims.

[0012] The terms “comprising,” “including,” or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but may also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Elements preceded by “comprising…” do not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element, unless further constraints are imposed.

[0013] Refer to Figure 1 to Figure 40 Reference numeral 10 generally denotes a foam delivery and recovery system, which includes a cleaning device 12 (such as a portable cleaning device 12A or a standing cleaning device 12B) and an applicator tool 14 connected to the cleaning device 12 via an accessory hose 16. The foam delivery and recovery system 10 includes a suction source 18 configured to generate a vacuum effect and a recovery tank 20 for containing liquid and debris material collected using the suction source 18. The foam delivery and recovery system 10 also includes at least one supply tank 22 for containing cleaning fluids, and typically includes a main supply tank 24 and an auxiliary supply tank 26 for containing different cleaning fluids. A pump assembly 28 is operatively coupled to the supply tanks 24, 26. In various examples, the pump assembly 28 includes a main pump 30 fluidly coupled to the main supply tank 24. Additionally, the pump assembly 28 includes at least one pump 32, 34, 36 operatively coupled to the auxiliary supply tank 26. In such examples, pump assembly 28 includes a dual-pump configuration (having a liquid pump 32 and an air pump 34) or a single-pump configuration (having a combined foam pump 36 with an air inlet port 38). Pump assembly 28 is configured to generate foam from cleaning fluid in the main supply tank 24 and / or auxiliary supply tank 26, depending on the configuration of the foam delivery and recovery system 10.

[0014] The foam dispensing and recovery system 10 may also be referred to herein as foam system 10 or foam cleaning system 10. Foam system 10 also includes a suction nozzle 46 and a dispenser 52, which are typically included in an applicator tool 14. Applicator tool 14 includes a support feature 54 for attaching a rod 56 to an accessory hose 16, and one or more sections for housing various components and for forming the recovery flow path 58, the foam dispensing path 60, and the liquid dispensing path 62. Suction nozzle 46 is in fluid communication with a suction source 18 to provide a vacuum effect to draw fluid, air, and debris towards the recovery tank 20.

[0015] Distributor 52 is in fluid communication with pump assembly 28 and with one or both of supply tanks 24, 26 to deliver one or more cleaning fluids to the surface to be cleaned. Distributor 52 is typically fluidly connected to main pump 30 via liquid passage 66 and to one of combined foam pump 36 or liquid and air pumps 32, 34 via distribution conduit 70. Depending on the configuration, distribution conduit 70 typically includes two connecting portions 72, 74 connected to pump assembly 28 and an end portion 76 connected to connecting portions 72, 74. Pump assembly 28 is in fluid communication with at least one mesh filter 78 or screen 78 for generating bubbles in the cleaning fluid to form foam.

[0016] The applicator tool 14 is in fluid communication with the pump assembly 28 via a liquid passage 66 and / or a dispensing conduit 70. The applicator tool 14 includes a chamber 84 having an inlet 86 and an outlet 88 in fluid communication with the pump assembly 28. In some respects, a mesh filter 78 is disposed in the chamber 84. An extrusion outlet or manifold 96 is in fluid communication with the outlet 88 of the chamber 84. The extrusion manifold 96 defines at least one opening 98 through which foam is extruded or dispensed.

[0017] The foam delivery and recovery system 10 also includes a user interface 104 for controlling the dispensing of foam via the applicator tool 14. In other words, foam is dispensed via the dispenser 52 in response to interaction with the user interface 104. The user interface 104 is operatively coupled to at least one of the pump assembly 28 and the applicator tool 14. The user interface 104 may include one or more of a foam activation switch 106 for activating the pump assembly 28 to generate foam and a flow control 108 for controlling the density of the foam. The user interface 104 may also be used to control the vacuum effect at the suction nozzle 46. In such an example, the user interface 104 may include a suction activation slider 110 for controlling the use of the vacuum effect generated by the suction source 18 and / or an airflow deflector 112 for controlling the position of the vacuum effect at the suction nozzle 46.

[0018] refer to Figure 1A and Figure 1BThe applicator tool 14 can be selectively coupled to various cleaning devices 12 to form a foam delivery and recovery system 10. Each configuration of the cleaning device 12 includes a base housing 120 having a suction assembly 122 and a liquid delivery system 124. The suction assembly 122 and the liquid delivery system 124 may be collectively referred to as a fluid guiding system 126 or a fluid delivery and recovery system 126, which may also be included in the foam delivery and recovery system 10. The fluid guiding system 126 is configured to guide fluid in multiple directions and is also configured to guide both liquid and air. The suction assembly 122 is configured to draw fluid into the base housing 120, while the liquid delivery system 124 is configured to guide liquid out of the base housing 120.

[0019] The suction assembly 122 typically includes a suction source 18 (such as a motorized fan assembly) configured to draw fluids (such as air, liquids, and foams) into a recovery tank 20 operatively coupled to the base housing 120. The suction assembly 122 typically operates to generate a suction or vacuum effect to draw fluids and / or debris from the surface being cleaned into the recovery tank 20. The recovery tank 20 can be selectively removed from the base housing 120 to dispose of liquids and debris trapped or collected in the recovery tank 20. The cleaning device 12 may include a separator for separating liquids and debris from the airflow for collection. The separator allows the airflow to pass through to the suction source 18 for discharge while retaining liquids and debris in the recovery tank 20.

[0020] Still referencing Figure 1A and Figure 1B The liquid delivery system 124 is configured to direct liquid from the main supply tank 24 and out of the base housing 120 for use in the cleaning process. The cleaning device 12 includes a main supply tank 24 operatively coupled to the base housing 120, the main supply tank being configured to hold and store liquids, such as cleaning solutions. The liquid may also be water or a mixture of cleaning solution and water. For example, many household suction cleaning tasks can be performed using water with or in combination with a liquid cleaning solution containing surfactants, stabilizers, fragrances, and / or other active and inactive ingredients. The liquid delivery system 124 includes a main pump 30, valves, and / or similar features for directing liquid out of the main supply tank 24 and thus out of the cleaning device 12. The cleaning device 12 may optionally include a heater for heating or warming the dispensed liquid.

[0021] Components of the cleaning device 12 are electrically connected to a power source 134 (such as a battery) or by a power cord plugged into a household power circuit. A user can selectively close a power switch between the power source 134 and the electrical components of the cleaning device 12 to activate electrical components, such as the suction source 18. The power source 134 can be used to power the cleaning device 12 and / or its connected components (such as accessories or tools, including the applicator tool 14). Alternatively, the foam system 10 may include an auxiliary power source 136 to power components of the applicator tool 14.

[0022] Still referencing Figure 1A and Figure 1B The cleaning device 12 can be a suction cleaner commonly used for cleaning small rugs, carpets, curtains, and cushioned surfaces. The cleaning device 12 can be used with tools or accessories (such as applicator tool 14) that can clean similar and / or different types of surfaces. The cleaning device 12 can be configured as a portable cleaning device 12A, such as... Figure 1A The example shown. Portable cleaning device 12A is typically smaller and lighter, and typically includes a handle 140 by which a user can pick up and carry the portable cleaning device 12A.

[0023] like Figure 1B As shown, the cleaning device 12 may additionally or alternatively be configured as an upright cleaning device 12B. The upright cleaning device 12B includes an elongated handle 142, which a user can use to move and manipulate the upright cleaning device 12B along a substrate surface. Typically, the user manipulates the upright cleaning device 12B via wheels 144 operably coupled to the base housing 120, causing the upright cleaning device 12B to roll on the substrate surface. Typically, the upright cleaning device 12B has a drive assembly that facilitates user manipulation. The upright cleaning device 12B is typically larger and heavier than the portable cleaning device 12A, and has a lower surface near the wheels 144 that engages with the substrate surface during cleaning. Furthermore, other configurations of the cleaning device 12 are conceivable, such as a canister-type device with cleaning tools connected to the wheel base via vacuum hoses.

[0024] Portable cleaning device 12A and upright cleaning device 12B can perform the same function, perform different functions, perform overlapping functions, etc. The function of cleaning device 12 can be performed separately from tools or accessories, or can be utilized by tools or accessories. For example, cleaning device 12 can be operable to directly deliver room temperature water, hot water, chemical cleaning solutions, or combinations thereof to tools and / or the surface to be cleaned. Similarly, cleaning device 12 can be configured to generate a vacuum effect to capture fluid and debris material on surfaces being directly cleaned by cleaning device 12 and / or tools.

[0025] Refer again Figure 1A and Figure 1B The cleaning device 12 (including any configuration of the portable cleaning device 12A or the upright cleaning device 12B) utilizes a fluid delivery and recovery system 126 with a suction assembly 122 and a liquid delivery system 124. When not used with tools, the cleaning device 12 performs a variety of cleaning functions using the suction assembly 122 and the liquid delivery system 124.

[0026] The cleaning device 12 can also be used with a tool selectively connected to it via an accessory hose 16. This tool is typically manually operated by a user relative to the cleaning device 12. The tool or accessory disclosed herein is configured as an applicator tool 14. The applicator tool 14 is configured to utilize various features and functions of the cleaning device 12. In various aspects, the applicator tool 14 is configured to use one or both of the suction assembly 122 and the liquid delivery system 124 of the cleaning device 12. When the applicator tool 14 is connected to the cleaning device 12, the suction assembly 122 and the liquid delivery system 124 can be used with the applicator tool 14, which is functionally separate from the cleaning device 12. Therefore, the cleaning device 12 may include a valve or similar feature that directs fluid to and from the applicator tool 14 when it is not connected to the base housing 120, and to other locations on the cleaning device 12.

[0027] refer to Figures 2A to 2D The foam delivery and recovery system 10 includes both a cleaning device 12 and an applicator tool 14 for extruding or dispensing foam strips and recovering the extruded or dispensed foam for various cleaning processes. The foam system 10 can have various configurations depending on the configuration of the cleaning device 12 and the applicator tool 14. For example, certain components of the foam system 10 may be operatively coupled to or disposed therein, either the cleaning device 12 or the applicator tool 14.

[0028] Figures 2A to 2D Several exemplary configurations of a foam system 10, including a cleaning device 12 and an applicator tool 14, are shown. However, the foam system 10 disclosed herein is considered non-limiting, and other feasible configurations are contemplated without departing from the teachings herein. In the illustrated examples, certain components are shown as typically located in either the cleaning device 12 or the applicator tool 14, while other components of the foam system 10 are shown as located in different locations (e.g., the cleaning device 12 or the applicator tool 14). However, these locations are merely exemplary.

[0029] Typically, the suction source 18, recovery tank 20, main supply tank 24, and main pump 30 are operatively coupled to or disposed therein in the cleaning device 12. These components are also included in the fluid delivery and recovery system 126 and may be combined with or separately from the applicator tool 14 to provide different functions for the cleaning device 12. Furthermore, generally, the suction nozzle 46 and dispenser 52 are operatively coupled to or defined by the applicator tool 14. The user can then manipulate the applicator tool 14 to position the dispenser 52 and suction nozzle 46 adjacent to the surface to be cleaned in order to perform the cleaning process provided by the applicator tool 14. Additional components more directly related to foam generation (separate from the fluid delivery and recovery system 126) may be disposed in the cleaning device 12 or the applicator tool 14.

[0030] For example, such as Figure 2A As shown, most of the components of the foam system 10 are housed within the cleaning device 12. In the illustrated example, the suction source 18 and the recovery tank 20 are operatively connected to the cleaning device 12 and in fluid communication via a recovery flow path 58 extending from the suction nozzle 46 of the applicator tool 14, through the accessory hose 16, and reaching the cleaning device 12. Furthermore, the main supply tank 24 and the main pump 30 are operatively connected to the cleaning device 12 and in fluid communication with the dispenser 52 on the applicator tool 14 via a liquid distribution path 62 extending from the main supply tank 24, through the main pump 30, through the liquid channel 66 extending through the accessory hose 16, and reaching the dispenser 52.

[0031] Additionally, the foam system 10 includes an auxiliary supply tank 26 in fluid communication with a liquid pump 32, which is in fluid communication with a dispenser 52 via a distribution conduit 70. Both the auxiliary supply tank 26 and the liquid pump 32 are operatively connected to the cleaning device 12. The foam system 10 includes an air pump 34, which is also operatively connected to the cleaning device 12. Typically, the distribution conduit 70 includes a first connection or liquid portion 72 connected to the liquid pump 32, a second connection or air portion 74 connected to the air pump 34, and an end portion 76 connected to each of the liquid portion 72 and the air portion 74. The first connection portion 72 may also be referred to as a first conduit portion, the second connection portion 74 may also be referred to as a second conduit portion, and the end portion 76 may also be referred to as a third conduit portion.

[0032] Cleaning fluid and air from auxiliary supply tank 26 are directed or driven through separate portions 72 and 74 of dispensing conduit 70, respectively, and mixed in end portion 76 before being dispensed. End portion 76 extends from cleaning device 12, through accessory hose 16, and to applicator tool 14. Alternatively, liquid portion 72 and air portion 74 may extend through accessory hose 16 to converge at end portion 76 of applicator tool 14.

[0033] Typically, the screen 78 is fluidly connected to the end portion 76 of the dispensing conduit 70. The mixed liquid and air are guided through the screen 78 to generate bubbles in the foam. The screen 78 may be operatively connected to the end portion 76 or disposed within the end portion 76. Alternatively, the screen 78 may be coupled to the distal end of the end portion 76 such that the mixed liquid and air are guided through the screen 78 as the mixture exits the dispensing conduit 70. Positioning the screen 78 close to the dispenser 52 may be advantageous for generating bubbles to form foam closer to where it is dispensed, as the bubbles can be reduced during their longer journey through the dispensing conduit 70.

[0034] Now for reference Figure 2B Foam System 10 and Figure 2A The foam system 10 shown is similar, differing only in the location or orientation of the air pump 34 and the air section 74 of the dispensing conduit 70. The auxiliary supply tank 26 and liquid pump 32 remain operatively connected to the cleaning device 12, while the air pump 34 is connected to the applicator tool 14. The liquid section 72 of the dispensing conduit 70 extends through the accessory hose 16 to the applicator tool 14. At the applicator tool 14, the air section 74 merges with the liquid section 72, forming the end portion 76 of the dispensing conduit 70.

[0035] like Figure 2C As shown, an additional configuration of the foam system 10 is illustrated, which is related to... Figure 2B The configuration shown is similar, except that the positions or orientations of the auxiliary supply tank 26, the liquid pump 32, and the liquid portion 72 of the dispensing conduit 70 differ. The auxiliary supply tank 26 and the liquid pump 32 are operatively connected to the applicator tool 14 together with the air pump 34. The dispensing conduit 70, comprising the liquid portion 72, the air portion 74, and the end portion 76, is included within the applicator tool 14 and does not extend through the accessory hose 16. In this way, pumps 32 and 34, and the cleaning solution for generating foam, are all included within the applicator tool 14, which can be selectively removed or connected to the cleaning device 12.

[0036] In an additional, non-limiting example, the auxiliary supply tank 26 may be operatively coupled to the cleaning device 12, while the liquid pump 32 is coupled to the applicator tool 14 on the opposite side of the accessory hose 16. In such an example, the liquid portion 72 of the dispensing conduit 70 extends through the accessory hose 16. The liquid pump 32 may be selectively coupled to the auxiliary supply tank 26, which may be larger on the cleaning device 12 or used with a different fluid system.

[0037] refer to Figure 2D Foam System 10 and Figure 2CThe configuration shown is similar, except that a combined foam pump 36 replaces the separate liquid pump 32 and air pump 34. In this example, an auxiliary supply tank 26 is in fluid communication with the foam pump 36, which drives the cleaning fluid through the distribution conduit 70. The foam pump 36 also includes an air inlet port 38 for drawing air into the pump 36 to mix with the cleaning fluid to generate foam to be guided through the distribution conduit 70. The foam pump 36 may also include an internal mesh feature 78 for generating bubbles in the foam, which may be used in conjunction with or instead of a mesh screen 78.

[0038] In an example where an internal mesh feature 78 is incorporated within the foam pump 36, the internal mesh feature 78 can be integrated into the foam pump 36 at the pump outlet to generate foam. This configuration reduces the number of components included in the foam system 10 and / or applicator tool 14 by using a modular foam pump 36 and omitting the additional mesh screen 78. Based on the configuration of the foam system 10, it is also conceivable to include the internal mesh feature 78 within the liquid pump 32 and / or the main pump 30. The internal mesh feature 78 or the separate mesh screen 78 is operatively coupled to one or more components of the pump assembly 28, the cleaning device 12, and / or the applicator tool 14 to be positioned within the foam dispensing path 60 to generate foam from the cleaning solution.

[0039] In an additional or alternative example, the auxiliary supply tank 26 is operatively coupled to the cleaning device 12, wherein the foam pump 36 is operatively coupled to the applicator tool 14. A dispensing conduit 70 extends from the dispenser 52 and through the accessory hose 16 to the foam pump 36. In another non-limiting example, both the auxiliary supply tank 26 and the foam pump 36 may be operatively coupled to the cleaning device 12. In such an example, foam may be generated by the foam pump 36 at the cleaning device 12 and directed through the accessory hose 16 to the applicator tool 14.

[0040] It is also conceivable to use a main supply tank 24 and a main pump 30 to generate foam. In such an example, the cleaning fluid in the main supply tank 24 and the main pump 30 are configured to generate foam to be dispensed. The liquid passage 66 may include a screen 78 for generating bubbles in the foam, or the liquid passage 66 may be in fluid communication with the end portion 76 of the dispensing conduit 70. Thus, the liquid delivery system 124 can also be used to dispense foam, omitting additional foam generating components.

[0041] Furthermore, in an additional example of the foam system 10, the main supply tank 24 may not be in fluid communication with the dispenser 52. In such examples, the applicator tool 14 may include features for blocking or preventing the liquid passage 66 from directing liquid from the main supply tank 24 to the dispenser 52. Figures 2A to 2DThis represents an exemplary, non-limiting configuration of the foam system 10, and additional or alternative configurations of the foam system 10 may be contemplated without departing from the teachings herein.

[0042] Still referencing Figures 2A to 2D as well as Figure 3 The foam system 10 includes a controller 150, which has a processor 152, a memory 154, and other control circuitry. Instructions or routines 156 are stored in the memory 154 and can be executed by the processor 152. The control circuitry may include communication circuitry 158 configured for bidirectional communication. The controller 150 communicates with various components of the foam system 10, including the pump assembly 28 and the suction source 18. The controller 150 is also configured to communicate with a user interface 104 to adjust and control foam generation and suction effects.

[0043] The foam system 10 also includes a power supply 134 for the cleaning device 12 and / or an auxiliary power supply 136 for the applicator tool 14. In various aspects, the auxiliary power supply 136 may power the electronic components of the applicator tool 14, while the main power supply 134 may power the electronic components of the cleaning device 12. In some aspects, the foam system 10 may include a main power supply 134 to power all electronic components of both the cleaning device 12 and the applicator tool 14, thus omitting the auxiliary power supply 136. In such examples, the electrical connection extends through the accessory hose 16 to the applicator tool 14.

[0044] Still referencing Figures 2A to 3 The user interface 104 is configured to control the foam output rate and foam density. In various aspects, the user interface 104 includes a foam activation switch 106 for activating and deactivating the pump assembly 28 to generate foam. The user interface 104 also includes a flow control 108 for controlling the foam output rate. The flow control 108 can be used to change the dispensed foam by altering the flow rate of one or both of the cleaning fluid and air mixed to form the foam. Flow adjustment allows the user to adjust the foam between drier, lower-density foam and wetter, higher-density foam, both of which can be generated using the same cleaning fluid.

[0045] In a non-limiting example, flow control 108 includes or is configured as needle valve 162 (see [link]). Figure 8The needle valve can be used to adjust the air-to-liquid mixing ratio for foam generation. The foam system 10 may include a throttle valve or needle valve 162 for the air pump 34 and / or a throttle valve or needle valve 162 for the liquid pump 32 to further adjust and customize the foam. The needle valve 162 for controlling the air-to-liquid mixing ratio can be used with a single-pump configuration having a combined foam pump 36 and a dual-pump configuration having separate liquid pumps 32 and air pump 34. The needle valve 162 can be adjusted manually or electromechanically to “throttle” or reduce the air or liquid flow before allowing the air and liquid to mix to form foam. In a particular example, the needle valve 162 is operatively coupled to the liquid portion 72 of a distribution conduit 70. In such examples, the needle valve 162 adjusts the liquid flow rate, thereby adjusting the air-to-liquid ratio. The adjusted mixture flows through the end portion 76 of the distribution conduit 70 and is distributed via a screen 78.

[0046] Alternatively, the flow rates of air and liquid can be controlled by the electrical power supplied to pump assembly 28. Typically, in a dual-pump configuration with separate liquid pump 32 and air pump 34, flow control via electricity is utilized. The electrical power applied to air pump 34 and liquid pump 32 is independently controlled, allowing the air and liquid flow rates to be changed independently to produce drier or wetter foam.

[0047] Still referencing Figures 2A to 3 Variations in airflow and / or liquid flow rate alter the air-to-liquid ratio of the mixture and the density of the foam. Foam density can be considered as the humidity or dryness of the foam. Adjustments between drier, lower-density foam and wetter, higher-density foam allow the foam system 10 to use the same cleaning fluid for both deep cleaning and refinishing cleaning.

[0048] Deep cleaning processes can remove or reduce stains and / or embedded dirt. Deep cleaning typically significantly wets the surface being cleaned and results in a longer drying time. Wetter foam can be used for deep cleaning because it generally provides a deeper clean as the liquid from the foam penetrates or soaks into the material of the surface being cleaned. Compared to drier foam, wetter foam generally provides a deeper clean, dissipates faster, has a slower drying time, and can be applied to surfaces more quickly. Wetter foam may also be less noticeable than drier foam.

[0049] In contrast, a "refreshing" cleaning process can be considered a "quick" cleaning process used to reduce or remove everyday dirt from surfaces and has a shorter drying time. Dryer foam can be used in quick cleaning processes because it stays on the surface being cleaned for a longer period. Compared to wetter foam, drier foam typically provides a "refreshing" clean, dissipates more slowly, dries faster, and is applied to the surface more slowly. Dryer foam may also be more noticeable than wetter foam.

[0050] The foam system 10 can produce a continuous foam density, allowing users to increase the customization of the cleaning process. Users can balance foam output (e.g., application rate), surface coverage, and run time based on the capacity of the auxiliary supply tank 26 and the visibility of the foam. The foam used in a refresh cleaning process using the foam system 10 can be more visible than conventional spray cleaning fluids. For example, the ΔE of a foam formulation can be about 1.6 ΔE, while the ΔE of a spray formulation is about 0.6 ΔE. Furthermore, the drying time of a foam formulation can range from about 15 minutes to about 20 minutes, while the drying time of a spray formulation can range from about 50 minutes to about 70 minutes. The foam system 10 can be used for multiple cleaning processes using the same cleaning fluid (including deep cleaning with wetter foam and refresh with drier foam), and can also be used in conjunction with additional cleaning processes utilizing the main supply tank 24.

[0051] Various configurations of the foam system 10 can have different parameters related to foam generation for a refresh cleaning process. As a non-limiting example, this document discloses parameters for generating foam for a refresh process using a liquid pump 32, an air pump 34, and a cleaning fluid housing or a smaller auxiliary supply tank 26 (instead of the larger main tank 24) within the applicator tool 14. In such examples, the flow rate of the liquid pump 32 is between approximately 25 mL / min and 75 mL / min, and more specifically, between approximately 40 mL / min and 60 mL / min. The flow rate of the air pump 34 is between approximately 1 L / min and 5 L / min. The volume of the auxiliary supply tank 26, used to contain the foaming chemical formulation (i.e., the cleaning fluid that generates the foam), is between approximately 100 mL and approximately 250 mL. Additionally, the mesh count of the sieve 78 is between approximately 120 holes per square inch and approximately 400 holes per square inch. For example, 120 mesh includes 120 holes per square inch on the sieve 78. Generally, the higher the mesh count, the smaller the hole size. The number of pores can be referred to as the porosity of the screen. Furthermore, the foam density produced in this exemplary configuration is between approximately 10 g / mL and approximately 150 g / mL. It should be understood that the parameters for foam generation will change as the configuration of the foam system 10 changes.

[0052] Still referencing Figures 2A to 3 The applicator tool 14 is configured to "extract" foam into a strip. Based on the configuration of the dispenser 52, a foam strip with a predefined thickness is dispensed. The extruded foam typically remains within the strip rather than spreading outwards. Therefore, the extruded foam provides a more consistent and controlled foam cleaning process.

[0053] Refer again Figures 2A to 2D as well as Figures 4 to 33 The diagram illustrates various exemplary configurations of the applicator tool 14, each of which can be included in the foam system 10. Each applicator tool 14 is configured to be coupled to the cleaning device 12 via an accessory hose 16. The accessory hose 16 includes a lever 56 at its distal end for engaging with the applicator tool 14 and providing communication between the applicator tool 14 and components operatively coupled to the cleaning device 12. For example, the lever 56 can facilitate fluid communication between the applicator tool 14 and the liquid delivery system 124, and between the applicator tool 14 and the suction source 18.

[0054] The lever 56 is typically inserted into the applicator tool 14. The lever 56 includes a stop 168 configured to be positioned within an orifice 170 defined by the applicator tool 14. The lever 56 is partially inserted into the applicator tool 14 so that the stop 168 enters the orifice 170. The stop 168 can be moved or adjusted to allow the applicator tool 14 to disengage from the lever 56, which can facilitate cleaning of the applicator tool 14 or selectively attach different attachments or tools to the lever 56. The lever 56 is configured to provide a gripping position for the user. The user can grip the lever 56 to manipulate the applicator tool 14 relative to the surface to be cleaned.

[0055] The lever 56 includes a portion of a liquid passage 66 for conveying liquid from the liquid delivery system 124 to the applicator tool 14 and forms a liquid dispensing path 62. The liquid passage 66 is selectively opened and closed via a valve 180. The valve 180 is operatively coupled to a biasing member 182 (shown as a coil spring) (see [link to relevant documentation]). Figure 5 The biasing member 182 is configured to bias valve 180 to a closed state, which prevents fluid from flowing into the applicator tool 14. Valve 180 is configured to be actuated when a force is applied to actuator 184 (such as trigger 184 on lever 56). The adjustment in trigger 184 to lever 56 is configured to actuate valve 180 to an open state, thereby providing fluid communication with applicator tool 14.

[0056] Therefore, the liquid delivered to the applicator tool 14 can be controlled by the user. Depending on the configuration of the foam system 10, this liquid can be a foaming chemical or other cleaning fluid. The user can adjust the trigger 184 to actuate the valve 180 and intermittently open the fluid communication as needed, or continuously supply liquid to the applicator tool 14. In such an example, the outlet connector 186 of the lever 56 is in fluid communication with the dispenser 52.

[0057] In some respects, the liquid passage 66 may be at least partially blocked, impeding or preventing the delivery of liquid to the applicator tool 14. In such a configuration, the outlet connector 186 of the lever 56 may be disposed within the outlet housing 188 of the support feature 54. The outlet housing 188 may have a closed end, which prevents liquid from being dispensed from the outlet connector 186. Alternatively or additionally, the outlet housing 188 may be selectively opened and closed to selectively allow and prevent the delivery of liquid to the applicator tool 14 and / or the surface to be cleaned. In an additional, non-limiting example, the applicator tool 14 may include a shield for blocking the trigger 184 to prevent braking of the valve 180.

[0058] Rod 56 also provides fluid communication between suction source 18 and applicator tool 14 to form a recovery flow path 58 using a vacuum effect. Each of applicator tool 14 and rod 56 is at least partially hollow, and the hollow interior portions are aligned with each other. Recovery flow path 58 extends from suction nozzle 46 to suction source 18 and recovery tank 20 for recovering dispensed foam, liquid, and debris materials.

[0059] After the foam is extruded, it may remain in its extruded foam form, and the suction source 18 is used to vacuum-suction the extruded foam into the recovery tank 20. Typically, the foam is drawn into the recovery tank 20, where the fluid is stored as a liquid and / or foam until removed by the user. Suctioning foam in its foamy state (with bubbles) produces less foam within the recovery tank 20 compared to vacuum-suction of liquid cleaning fluid. Therefore, the foam system 10 can be used without adding a defoamer. However, it is conceivable that the foam system 10 may operate without using a defoamer without departing from the teachings of this document.

[0060] refer to Figures 4 to 9 The image shows a dual-nozzle applicator tool 214 (i.e., one of the exemplary configurations of applicator tool 14). The dual-nozzle applicator tool 214 includes an auxiliary supply tank 226 and a pump assembly 228. In some aspects, the pump assembly 228 includes a liquid pump 232 and an air pump 234 (see [link to image]). Figure 5 and Figure 6 In other respects, pump assembly 228 includes at least one foam pump 236 having an air inlet port 238 (see...). Figure 7The dual-nozzle applicator tool 214 includes a suction nozzle 246 (which includes a first or front suction nozzle 248 and a second or rear suction nozzle 250) and a dispenser 252 for extruding foam.

[0061] The dual-nozzle applicator tool 214 includes support features 254 for supporting or defining various components, and for defining at least a portion of a recovery flow path 258 together with the suction nozzle 246, defining a foam dispensing path 260 together with the dispenser 252, and defining a liquid dispensing path 262. The pump assembly 228 is in fluid communication with the dispenser 252 via a dispensing conduit 270, which, in a dual-pump configuration, may include a first coupling or liquid portion 272, a second coupling or air portion 274, and an end portion 276.

[0062] Dispenser 252 includes at least one screen 278, which may include a first or coarse screen 280 and a second or fine screen 282 disposed within a chamber 284 having an inlet 286 and an outlet 288 in fluid communication with conduit 270. In this way, screens 280, 282 typically define different porosities. An extrusion manifold 296 is also disposed within chamber 284, and an opening 298 of extrusion manifold 296 is in fluid communication with outlet 288 of chamber 284 for extruding foam. Dual-nozzle applicator tool 214 also includes a user interface 304 for controlling various aspects of foam system 10. Dual-nozzle applicator tool 214 includes a foam activation switch 306, a flow control 308, a suction activation slider 310, and an air deflector 312.

[0063] Still referencing Figure 4 and Figure 5 The support feature 254 is generally elongated tubular with a substantially hollow interior to form part of the recovery flow path 258 and to receive the rod 56. The support feature 254 includes a head or distal end 318 near the suction nozzle 246. In various aspects, the suction nozzle 246 includes a front nozzle 248 and a rear nozzle 250 spaced apart from each other, with a conduit 270 extending into the space between the front nozzle 248 and the rear nozzle 250. The front nozzle 248 and the rear nozzle 250 each define inlets 320, 322 at one end, configured to be located adjacent to the surface to be cleaned, and outlets 324, 326 at opposite ends, leading to the interior of the support feature 254. This configuration has the advantage that the vacuum effect allows the dual-nozzle applicator tool 214 to be used in a forward direction, a backward direction, or both simultaneously. The front nozzle 248 and the rear nozzle 250 are operatively coupled to the distal end 318 of the support feature 254.

[0064] The front suction nozzle 248 and the rear suction nozzle 250 are each formed as arcuate guide devices, their width narrowing from the respective inlets 320, 322 toward the distal end 318 of the support feature 254. In this way, the inlets 320, 322 can be elongated openings for capturing foam and debris material, while the narrowing of the front suction nozzle 248 and the rear suction nozzle 250 guides the captured material along the recovery flow path 258 to the narrower support feature 254. The inlets 320, 322 are generally elongated in the lateral direction and narrower in the longitudinal direction, which can help create a vacuum effect at the inlets 320, 322.

[0065] At least a portion of the suction nozzle 246 is coupled to the support feature 254, typically via a mechanical coupling feature such as a fastener. The suction nozzle 246 is also operatively coupled to the air deflector 312, which facilitates alignment of outlets 324, 326 with various orifices 330 of the air deflector 312, thereby controlling fluid communication between the suction nozzle 246 and the suction source 18, as described herein.

[0066] Still referencing Figure 4 and Figure 5 The user interface 304 includes a suction activation slider 310 for allowing and preventing fluid communication between the suction nozzle 246 and the suction source 18. The suction activation slider 310 can be used in conjunction with a separate activation feature that controls the activation and deactivation of the suction source 18. The suction activation slider 310 is operatively coupled to a support feature 254. The slider 310 includes a user-accessible engagement feature 338 for moving the suction activation slider 310 and an internal blocking feature 340. The suction activation slider 310 is configured to move manually in a forward-backward direction between a closed position and an open position. While the suction activation slider 310 shown is manually operable, it is conceivable that it could be electromechanically or automatically moved based on sensed information, cleaning procedures, etc. In such examples, the suction activation slider 310 could be powered by an auxiliary power supply 336 or a main power supply 134 in the applicator tool 214. Figure 3 ).

[0067] In the open position, the suction activation slider 310 is in a rearward position, which moves the internal blocking device 340 closer to the lever 56. This position of the internal blocking feature 340 provides space between the internal blocking feature 340 and the internal channel 342 of the support feature 254, thereby defining a recovery flow path 258 between the interior of the support feature 254 near its distal end 318 and the nozzle 56. When the slider 310 is adjusted to the closed position, which is normally forward (as shown in dashed lines), the blocking feature 340 moves closer to the distal end 318 of the support feature 254 and enters or abuts the internal channel 342 to reduce or prevent fluid communication between the lever 56 and the front suction nozzle 248 and the rear suction nozzle 250. Therefore, when the blocking feature 340 is in the closed position, fluid communication between the nozzles 248, 250 and the suction source 18 can be reduced or prevented, so the dual-nozzle applicator tool 214 can be used with or without a vacuum effect. This configuration allows for the extrusion of foam without immediately or quickly removing it from the surface being cleaned using a vacuum.

[0068] In addition to allowing and preventing vacuum effects, the air deflector 312 also includes, in the user interface 304 and configured to selectively allow and prevent fluid communication between the front nozzle 248 and the rear nozzle 250 and the suction source 18 (e.g., adjusting the position of the vacuum effect at the suction nozzle 246). The air deflector 312 is a cylindrical component extending through the support feature 254, generally perpendicular to the recovery flow path 258. The front nozzle 248 and the rear nozzle 250 include a connecting ring 344 near the outlets 324, 326, and the air deflector 312 extends through the connecting ring 344. The connecting ring 344 maintains alignment between the nozzles 248, 250 and the air deflector 312 while allowing the air deflector 312 to rotate within the connecting ring 344. The air deflector 312 is configured to rotate about an axis of rotation that extends longitudinally along the air deflector 312.

[0069] The air deflector 312 includes a knob 346 on the exterior of a support feature 254 and a guide device 348 extending into the support feature 254. The guide device 348 defines an orifice 330 that selectively aligns with outlets 324, 326 of the front suction nozzle 248 and the rear suction nozzle 250 to allow fluid to flow from the nozzles 248, 250 through the air deflector 312 and to the rod 56. The air deflector 312 is typically operable between three to four positions. The air deflector 312 can typically be manually rotated between these positions or can be electronically activated without departing from the teachings herein.

[0070] Still referencing Figure 4 and Figure 5In a configuration where the air deflector 312 has four positions, the air deflector 312 is configured to rotate approximately 90 degrees between the following positions: a front-opening position, allowing fluid communication between the suction source 18 and the front nozzle 248; a first double-opening position, allowing fluid communication between the suction source 18 and both the front nozzle 248 and the rear nozzle 250; a rear-opening position, allowing fluid communication between the suction source 18 and the rear nozzle 250; and a second double-opening position, allowing fluid communication between the suction source 18 and both the front nozzle 248 and the rear nozzle 250. In a configuration with three positions, the second double-opening position can be omitted, and the air deflector 312 is configured to rotate approximately 180 degrees between the front-opening position, the first double-opening position, and the rear-opening position.

[0071] In the front-open position, a vacuum effect is generated at inlet 320 of the front nozzle 248, but not at the rear nozzle 250. In contrast, in the rear-open position, a vacuum effect is generated at inlet 322 of the rear nozzle 250, but not at the front nozzle 248. Instead of preventing a vacuum effect at one of the inlets 320, 322, the vacuum effect is reduced. Blocking or reducing the vacuum effect at one inlet 286 allows for the simultaneous extrusion of foam and capture of debris material while the dual-nozzle applicator tool 214 moves in a single direction. Therefore, the user interface 304 is configured to selectively: initiate suction only at the first inlet 320; initiate suction only at the second inlet 322; initiate suction at each of the first inlet 320 and the second inlet 322 simultaneously; and simultaneously close suction at each of the first inlet 320 and the second inlet 322.

[0072] For example, the dual-nozzle applicator tool 214 can move forward and the air deflector 312 can move to a front-open position, thereby creating a vacuum effect at the front inlet 320 instead of the rear inlet 322. When the applicator tool 214 moves forward, the front inlet 320 can capture debris material before the foam is dispensed onto the same surface being cleaned. This improves the effectiveness of the foam on the surface during cleaning. In the dual-open position, a vacuum effect is created at both the front inlet 320 and the rear inlet 322. This can facilitate the capture of more foam and debris material from the surface being cleaned and reduce the time required to remove the foam from the cleaned surface.

[0073] Still referencing Figure 4 and Figure 5 as well as Figure 6Support feature 254 is configured to support auxiliary supply canister 226. Auxiliary supply canister 226 extends around air deflector 312 on opposite lateral sides of support feature 254 and has multiple heights to reduce interference with other components while maximizing the internal capacity of auxiliary supply canister 226. Auxiliary supply canister 226 includes cap 350 that covers an opening for adding additional cleaning fluid to auxiliary supply canister 226. Dual-nozzle applicator tool 214 also includes side supports 352, 354 located on opposite sides of support feature 254 and coupled to auxiliary supply canister 226. Typically, side supports 352, 354 may be fastened or otherwise coupled to auxiliary supply canister 226.

[0074] Side supports 352 and 354 are configured to support components of the user interface 304 related to foam generation. For example, the first side support 352 includes a flow control 308. In the illustrated configuration, the flow control 308 is configured as a single regulating disc that can communicate with the pump assembly 228 to control the flow rate of either the liquid pump 232 or the air pump 234 in a dual-pump configuration, thereby altering the density of the foam described herein. In a single-pump configuration, the flow control 308 can control the flow rate of the foam pump 236 to adjust the amount of foam generated.

[0075] The second side support 354 includes a foam activation switch 306. A user can engage the foam activation switch 306 to activate the pump assembly 228 to generate foam. The pump assembly 228 can be activated when the user engages the foam activation switch 306, activated within a predetermined time after the user engages the foam activation switch 306, and / or activated until the user engages the foam activation switch 306 again.

[0076] Still referencing Figure 6 The lower side of the dual-nozzle applicator tool 214 is shown, oriented towards the surface to be cleaned when the tool is in use. A removable cap 356 is operatively coupled to at least one of the auxiliary supply tank 226 and the support feature 254. The removable cap 356 houses an auxiliary power supply 336 for the dual-nozzle applicator tool 214.

[0077] Pump assembly 228, adjacent to removable cover 356, is connected to dual-nozzle applicator tool 214 below auxiliary supply tank 226. Figure 6 In the example shown, pump assembly 228 includes a separate liquid pump 232 and an air pump 234. A connecting conduit 360 is in fluid communication with auxiliary supply tank 226 and liquid pump 232. Air pump 234 is configured to direct air into conduit 270. Conduit 270 has a liquid portion 272 connected to liquid pump 232, an air portion 274 connected to air pump 234, and an end portion 276 where liquid and air are mixed to be extruded as foam.

[0078] refer to Figure 7 The dual-nozzle applicator tool 214 includes two foam pumps 236. When using the foam pumps 236, the dual-nozzle applicator tool 214 can utilize one or both foam pumps 236 to increase foam production output. The foam pumps 236 are coupled to a connecting conduit 360, which extends from the auxiliary supply tank 226 and branches into two branches to connect to the foam pumps 236 respectively. Each of the foam pumps 236 is also in fluid communication with a dispensing conduit 270, which has a first connecting portion 272 connected to the first foam pump 236, a second connecting portion 274 connected to the second foam pump 236, and an end portion 276 in fluid communication with both the first and second connecting portions 272 and the chamber 284.

[0079] Each of the foam pumps 236 includes an air inlet port 238 for drawing air into the respective pump 236 to mix it internally with the cleaning fluid to form foam. Thus, the mixture of air and cleaning fluid flows through a first connecting portion 272 and a second connecting portion 274 of the conduit 270, as well as an end portion 276. In various examples, the foam pump 236 may also include an internal mesh feature, which facilitates the mixing of air and liquid and the generation of bubbles for foaming.

[0080] Refer again Figure 6 and Figure 7 as well as Figure 8 The two connecting portions 272, 274 of the conduit 270 extend from opposite sides of the removable cap 356 around the rear nozzle 250 on their opposite sides, and the end portion 276 is disposed between the front nozzle 248 and the rear nozzle 250. Figure 8 The example also includes a needle valve 162 configuration for flow output. The needle valve 162 is operatively coupled to the liquid portion 272 of the conduit 270 to control the flow rate of the liquid, thereby adjusting the air-liquid mixture in the end portion 276 and thus adjusting the foam density. The conduit 270 extending around the rear nozzle 250 can facilitate the inclusion of the needle valve 162 and allow easy access for manual adjustment of the needle valve 162.

[0081] Still referencing Figures 6 to 8Dispenser 252 includes a chamber 284 having an inlet 286 and an outlet 288. Chamber 284 is at least partially defined by an end frame 368. Frame 368 has an elongated body defining chamber 284 between a front receiving recess 370 and a rear receiving recess 372. Each of chamber 284 and receiving recesses 370, 372 is elongated in the lateral direction and narrowed or thinned in the longitudinal direction. Chamber 284 and receiving recesses 370, 372 are arranged parallel to each other. Additionally, an inlet opening 374, 376 is defined in each receiving recess 370, 372. Receiving recesses 370, 372 may be smaller than the outlet 288 of chamber 284 and extend parallel to the outlet 288.

[0082] The cap 378 is coupled to the frame 368 near the inlet 286 of the chamber 284. The cap 378 extends across the inlet 286 of the chamber 284 and includes at least one, but typically more than one, inlet 380. The illustrated configuration includes two inlet ports 380, and the end portion 276 of the conduit 270 includes two engaging branches for engagement with the inlet ports 380. This configuration provides two locations for the foam mixture to flow into the chamber 284 to aid in the dispersion of the foam mixture along the width of the chamber 284.

[0083] Still referencing Figure 8 and Figure 9 The dual-nozzle applicator tool 214 also includes a coarse mesh 280 and a fine mesh 282 disposed within a chamber 284. The coarse mesh 280 is located upstream of the chamber 284 near the cover 378, while the fine mesh 282 is located downstream of the coarse mesh 280 near the outlet 288. The mesh 280 is configured to generate bubbles in the foam. By providing two meshes 280 and 282, additional bubbles can be generated, which can enhance the cleaning function of the foam and assist the extrusion process. Furthermore, the fine mesh 282 can have more holes per square inch than the coarse mesh 280. This difference in the number of holes can help generate more bubbles and / or bubbles of different sizes in the foam.

[0084] A spacer 382 is disposed between two screens 280, 282. The spacer 382 maintains the distance between the two screens 278 to facilitate the flow of cleaning fluid through the screens 280, 282 as bubbles are generated in the foam. The spacer 382 is a generally elongated feature corresponding to the cross-sectional shape of the chamber 284. The spacer 382 includes a plurality of orifices 384 arranged in a linear configuration. The plurality of orifices 384 can help disperse or diffuse the foam across the width of the chamber 284 as it flows through the chamber 284.

[0085] Distributor 252 also includes an extrusion manifold 296 in fluid communication with the outlet 288 of chamber 284. Extrusion manifold 296 may be a separate component or integrally defined by frame 368. Extrusion manifold 296 has a similar configuration to spacer 382, ​​having an elongated shape extending across chamber 284 and having a plurality of openings 298 arranged in a linear configuration. Extrusion manifold 296 is located downstream of screens 278, 280 and disperses extruded foam along the width of outlet 288 to form an extruded foam band. Extrusion manifold 296 helps to distribute foam evenly across the width of the band with a consistent thickness for a more consistent and controlled cleaning process. In various aspects, the openings 298 of extrusion manifold 296 are offset relative to the orifices 384 of spacer 382 in the direction of foam movement along the foam distribution path 260 through chamber 284, which also contributes to a more even distribution of foam through distributor 252.

[0086] Frame 368 includes opposing lateral ends, with chamber 284 and receiving recesses 370, 372 extending between the lateral ends. Frame 368 includes a spacer protrusion 386 extending from each of the lateral ends. The spacer protrusion 386 extends in a direction parallel to the movement path of the foam along the foam dispensing path 260 at the outlet 288. The spacer protrusion 386 defines the distance between the cleaned surface and the extrusion manifold 296. This distance defines the height of the extruded foam strip. In various aspects, frame 368 can be interchanged or adjusted to provide different heights for the extruded foam strip.

[0087] Refer again Figure 5 And still refer to Figure 8 and Figure 9 The frame 368 facilitates the alignment of the front inlet 320 and rear inlet 322 of the suction nozzle 246 relative to the outlet 288 of the dispenser 252. The frame 368 is typically fastened to the ends of the nozzles 248, 250 via fasteners and is configured to receive the ends of the nozzles 248, 250 that define the inlets 320, 322. The nozzles 248, 250 are located in receiving recesses 370, 372. In this way, the inlets 320, 322 are positioned on opposite sides of the outlet 288 of the dispenser 252, wherein the outlet 288 of the dispenser 252 and the inlets 320, 322 of the nozzles 248, 250 are arranged in a parallel configuration. The frame 368 defines elongated inlet openings 374, 376 in the recesses 370, 372, which are in fluid communication with the inlets 320, 322 of the nozzles 248, 250, respectively. Therefore, when a vacuum effect is generated, foam and debris materials are sucked in through frame 368 and into nozzles 248 and 250.

[0088] In various aspects, the dual-nozzle applicator tool 214 can also be used to spray additional cleaning fluid using the main supply tank 24 and the main pump 30 to guide the cleaning fluid along the liquid distribution path 262. In various aspects, the outlet housing 388 includes a nozzle 390 having an opening for dispensing fluid from the outlet housing 388. In such a configuration, the user can actuate the valve 180 via a trigger 184 to open the liquid passage 66, thereby establishing fluid communication between the main supply tank 24 and the nozzle 390. The nozzle 390 is typically angled to facilitate spraying or dispensing liquid toward the surface to be cleaned. Thus, the applicator tool 214 can utilize the suction source 18 to create a vacuum effect, utilize the liquid delivery system 124 to spray liquid, and utilize the foaming system 10 to extrude foam.

[0089] refer to Figures 10 to 14 The image shows an applicator tool 14 configured as a pump foaming applicator tool 414. The pump foaming tool 414 includes an auxiliary supply tank 426 and a pump assembly 428. In some aspects, the pump assembly 428 includes a liquid pump 432 and an air pump 434 (see [link to image]). Figure 13 In other respects, pump assembly 428 includes at least one foam pump 436 having an air inlet port 438 (see...). Figure 14 The foam applicator tool 414 includes a suction nozzle 446 having a front suction nozzle 448, and a dispenser 452 for dispensing foam. The foam applicator tool 414 includes a support feature 454 for supporting or defining various components, and defines a portion of a recovery flow path 458 together with the suction nozzle 446 and defines a foam dispensing path 460 of the dispenser 452.

[0090] Pump assembly 428 is in fluid communication with dispenser 452 via dispensing conduit 470, which may include a first coupling or liquid portion 472, a second coupling or air portion 474, and an end portion 476 for a dual-pump configuration, and may have a single portion in a single-pump configuration. Dispenser 452 includes a screen 478 operatively coupled to conduit 470 for generating bubbles in foam; and a chamber 484 having an inlet 486 and an outlet 488 in fluid communication with conduit 470. Extrusion outlet 496 is operatively coupled to outlet 488 of chamber 484 and includes at least one opening 498 for extruding foam.

[0091] The foam applicator tool 414 also includes a user interface 504 for controlling various aspects of the foam system 10, the user interface including a foam activation button or switch 506. Without departing from the teachings herein, additional control aspects such as for the suction source 18 and for controlling the foam output rate may be included on the applicator tool 414 or may be located on the cleaning device 12.

[0092] Still referencing Figures 10 to 14 The support feature 454 includes a receiving portion for receiving the rod 56 and has a more squared distal end 518 for accommodating multiple components that generate foam. The support feature 454 defines a front suction nozzle 448 having a slightly arcuate shape for drawing fluid into the interior of the support feature 454 and towards the rod 56. The inlet 520 of the front suction nozzle 448 may be located at the foremost position of the applicator tool 414. The inlet 520 elongates in the lateral direction and is thinner in the longitudinal direction to create a vacuum effect. The front suction nozzle 448 narrows from the inlet 520 to guide the recovered fluid into the support feature 454 along a recovery flow path 458.

[0093] Support feature 454 is configured to receive and support auxiliary supply tank 426, pump assembly 428, and auxiliary power supply 536. In the illustrated configuration, support feature 454 includes side protrusions 552, 554 to increase the space within support feature 454 for auxiliary supply tank 426. Auxiliary supply tank 426 is primarily or entirely disposed within the interior of support feature 454. In various aspects, auxiliary supply tank 426 may be removable for filling or cleaning. Support feature 454 defines a side opening 556 aligned with an opening for access to auxiliary supply tank 426. Auxiliary supply tank 426 includes a cap 558 that is positionable within side opening 556 to close auxiliary supply tank 426 and removable to add additional cleaning fluid to auxiliary supply tank 426.

[0094] The auxiliary supply tank 426 forms a central recessed area to support the pump assembly 428. The pump assembly 428 is in fluid communication with the auxiliary supply tank 426 via a connecting conduit 560. The pump assembly 428 is also in fluid communication with the dispenser 452 via a dispensing conduit 470 with a screen or mesh filter 478.

[0095] exist Figure 13 In the example shown, the foam applicator tool 414 includes separate liquid pump 432 and air pump 434, arranged adjacent to each other within a recessed area of ​​the auxiliary supply tank 426. A connecting conduit 560 is in fluid communication with both the auxiliary supply tank 426 and the liquid pump 432. The air pump 434 draws air into the conduit 470. The conduit 470 has a liquid portion 472 connected to the liquid pump 432, an air portion 474 connected to the air pump 434, and an end portion 476 where the liquid and air are mixed to be extruded as foam.

[0096] exist Figure 15In the example shown, the foam applicator tool 414 includes a foam pump 436. The illustrated configuration includes a single foam pump 436, but the tool 414 may include two foam pumps 436 to increase foam generation output. The foam pump 436 is coupled to a connecting conduit 560 (which extends from the auxiliary supply tank 426 to the foam pump 436) and a dispensing conduit 470 (which is in fluid communication with a chamber 484). The foam pump 436 includes an air inlet port 438 for drawing air into the pump 436 to mix it internally with a cleaning fluid to form foam. In various examples, the foam pump 436 may also include an internal mesh feature for generating bubbles for the foam.

[0097] Dispensing conduit 470 fluidly connects the pump assembly 428 and the chamber 484 of the dispenser 452. Dispensing frame 568 extends along the inside of the front nozzle 448. Dispensing frame 568 generally defines at least a portion of the chamber 484 and may also be operatively coupled to or define an extrusion opening 498. The elongated extrusion opening 498 extends laterally across the width of the foam applicator tool 414 and is narrower in the tactile direction. The configuration of the elongated extrusion opening 498 helps to widen the extruded foam band, thereby providing a more consistent cleaning using the extruded foam band.

[0098] The extrusion opening 498 is defined near the rear edge of the frame 568, thereby providing space for fasteners for attaching the dispenser 452 to the support feature 454. The extrusion opening 498 extends parallel to the inlet 520 of the front nozzle 448. Typically, the foaming applicator tool 414 includes a single inlet 520. Instead of a second vacuum inlet on the opposite side of the extrusion opening 498, a scrubbing assembly 574 is attached to the support feature 454. The scrubbing assembly 574 includes a base 576 disposed within and attached to the support feature 454 in the rearward direction of the frame 568. The scrubbing assembly 574 is typically positioned between the extrusion opening 498 and the bottom of the support feature 454 supporting the auxiliary supply canister 426.

[0099] The scrubbing assembly 574 includes bristles 578 extending from the base 576. The bristles 578 are arranged along the width of the foam applicator tool 414 and extend beyond the extrusion opening 498. The length of the bristles 578 can contribute to the height of the extruded foam band. The bristles 578 also provide a scrubbing and cleaning function for the foam applicator tool 414.

[0100] Still referencing Figures 11 to 14The foam applicator tool 414 includes an auxiliary power supply 536 disposed near the auxiliary supply tank 426 to power components of the applicator tool 414. The foam applicator tool 414 also includes a foam activation switch 506. The foam activation switch 506 is centrally positioned on a support feature 454, allowing the user to easily access and engage the activation switch 506 while moving the applicator tool 414 back and forth on a cleaning surface.

[0101] Typically, the foam applicator tool 414 includes components for generating foam (including an auxiliary supply tank 426 and a pump assembly 428). The foam applicator tool 414 is in fluid communication with the suction source 18. In this configuration, the foam applicator tool 414 may not be in fluid communication with the liquid delivery system 124, wherein the outlet housing 588 of the support feature 454 has a closed end. Thus, the foam applicator tool 414 can generate and dispense foam and utilize vacuum suction to dispense the foam, but does not dispense additional cleaning fluid from the main supply tank 24.

[0102] refer to Figures 15 to 18 The image shows a manual pumping tool 614 (i.e., one of the exemplary configurations of the applicator tool 14). The manual pumping tool 614 includes an auxiliary supply tank 626 and a pump assembly 628, which includes a manual air pump 634. The manual pumping tool 614 includes a suction nozzle 646 with a front suction nozzle 648 and a dispenser 652 for dispensing or extruding foam. The manual pumping tool 614 includes support features 654 for supporting or defining various components, and defines a portion of a recovery flow path 658 together with the suction nozzle 646 and a foam dispensing path 660 together with the dispenser 652.

[0103] Pump assembly 628 is in fluid communication with dispenser 652 via dispensing conduit 670. A screen or mesh filter 678 is operatively coupled to conduit 670 for generating bubbles in foam. Dispenser 652 includes chamber 684 having an inlet 686 in fluid communication with conduit 670 and an outlet 688. Foam outlet 696 is operatively coupled to outlet 688 of chamber 684 and includes at least one opening 698 for dispensing foam.

[0104] The manual pump applicator tool 614 also includes a user interface 704 for controlling various aspects of the foam system 10, the user interface including a foam activation button 706. Without departing from the teachings herein, additional control aspects such as for the suction source 18 and for controlling the foam flow rate may be included on the applicator tool 614 or may be located on the cleaning device 12.

[0105] Figures 15 to 18 Manual applicator tool 614 and Figures 10 to 14 The foaming applicator tool 414 is basically similar to the one in the middle. Figures 15 to 18 The main differences in the manual pumping tool 614 lie in the configuration of the manual air pump 634, the foam activation button 706 used for liquid pumping, and the dispenser 652. The support feature 454 includes a receiving portion for receiving the rod 56 and has a more squared distal end 718 for accommodating multiple components that generate foam. The support feature 654 defines a front suction nozzle 648, which has a slightly arcuate shape for drawing fluid into the interior of the support feature 654 and towards the rod 56. The inlet 720 of the front suction nozzle 448 can be located at the foremost position of the applicator tool 414. The inlet 720 extends laterally and is thinner in the longitudinal direction to create a vacuum effect. The front suction nozzle 648 narrows from the inlet 720 to guide the recovered fluid into the support feature 654 along the recovery flow path 658.

[0106] An auxiliary supply tank 626 is disposed within the support feature 654 and is used to contain foaming cleaning chemicals (i.e., cleaning fluid that generates foam). A manual air pump 634 is at least partially disposed within the auxiliary supply tank 626. The manual air pump 634 can be removed from the auxiliary supply tank 626 to add additional cleaning fluid. Manual pumping of the air pump 634 utilizes compressed air above the cleaning fluid to pressurize the auxiliary supply tank 626.

[0107] The manual air pump 634 includes a pump body 722 disposed within an auxiliary supply canister 626 and a piston 724 movable relative to the pump body 722. A collar 726 is coupled to an opening in the auxiliary supply canister 626. The piston 724 is coupled to a piston cap 728, which provides a gripping position for the user. In the illustrated configuration, the support feature 654 includes side protrusions 752, 754 to increase the space within the support feature 654 for the auxiliary supply canister 626 and the manual air pump 634. The support feature 654 defines a side opening 756 aligned with the opening into the auxiliary supply canister 626, through which the manual air pump 634 extends.

[0108] Normally, the manual air pump 634 shuts off the auxiliary supply tank 626 to prevent leaks during use of the manual air pump 634 and / or the manual pumping tool 614. The user can generate compressed air within the auxiliary supply tank 626 by moving the piston 724 into and out of the pump body 722 using the piston cap 728.

[0109] Still referencing Figures 15 to 18The user interface 704 includes a foam activation button 706 that provides selective fluid communication between the connecting conduit 760 and the dispensing conduit 670. The connecting conduit 760 includes three sections: an air guide section 762, a liquid guide section 764, and a mixing section 766. The air guide section 762 is coupled to an upper portion of the auxiliary supply tank 626 to guide compressed air from the auxiliary supply tank 626. The liquid guide section 764 is coupled to a lower portion of the auxiliary supply tank 626 to guide liquid chemicals from the auxiliary supply tank 626. The air guide section 762 and the liquid guide section 764 merge and connect to form the mixing section 766, in which air and liquid are mixed to form foam. The mixing section 766 is operatively coupled to the foam activation button 706 and is located upstream of the foam activation button 706.

[0110] A foam activation button 706 is operably coupled to a valve 768, which opens and closes fluid communication between the connecting conduit 760 and the dispensing conduit 670. Valve 768 is operably coupled to a biasing member 770 (shown as a helical spring) (see [link to relevant documentation]). Figure 17 The biasing member 770 is configured to bias valve 768 to a closed state, which prevents fluid from flowing to dispenser 652. Valve 768 is configured to be actuated when force is applied to foam activation button 706. Adjustment of button 706 in support feature 654 is configured to actuate valve 768 to an open state, thereby providing fluid communication with dispenser 652.

[0111] The open valve 768 releases air and foaming chemicals from the auxiliary supply tank 626 through connecting conduit 760 and dispensing conduit 670. The air pressure in the auxiliary supply tank 626 forces foam from the dispenser 652 onto the cleaned surface. When the air pressure stored in the auxiliary supply tank 626 is depleted, the user can use a manual air pump 634 to provide sufficient pressure to generate more foam.

[0112] Still referencing Figures 15 to 18 The dispensing conduit 670 is a single channel for directing foam to the surface to be cleaned. A mesh filter 678 is operatively coupled to the dispensing conduit 670 to cause microbubble formation, thereby generating foam. In the illustrated configuration, the dispensing conduit 670 extends through an inlet 686 of a chamber 684 and is coupled to a support feature 654 near a front suction nozzle 648. The dispensing conduit 670 is in fluid communication with a foam outlet 696, which is configured as a nozzle spaced apart from the surface to be cleaned. Figure 17As shown, foam outlet 696 opens within chamber 684, thereby allowing chamber 684 to act as a guide for the dispensed foam. It is conceivable that foam outlet 696 could be positioned closer to outlet 688 within chamber 684. Furthermore, it is conceivable that dispensing conduit 670 could be coupled to a frame (such as the frame described herein) to extrude foam into a wider band.

[0113] The manual pumping tool 614 also includes a scrubbing assembly 774, similar to... Figures 10 to 14 The scrubbing assembly 574 is shown. The scrubbing assembly 574 includes a base 776 disposed and connected to a support feature 654 in a rearward direction of the foam outlet 696. The scrubbing assembly 574 includes bristles 778 extending from the base 776. The bristles 778 are arranged along the width of the foam applicator tool 614 and extend beyond the outlet 688 of the chamber 684. The bristles 778 help disperse the foam into a band and contribute to the formation of the height of the dispensed foam. The bristles 778 also provide a scrubbing and cleaning function for the foam applicator tool 614.

[0114] Typically, the manual foam pumping applicator tool 614 includes components for generating foam (including an auxiliary supply tank 626 and a pump assembly 628). The foam manual pumping tool 614 is also in fluid communication with a suction source 18 for using vacuum suction or removal of foam from the surface being cleaned. In the illustrated configuration, the foaming applicator tool 614 may not be in fluid communication with the liquid delivery system 124, wherein the outlet housing 788 has a closed end.

[0115] refer to Figures 19 to 23 A foam and liquid or multi-fluid applicator tool 814 (i.e., applicator tool 14) is shown. The multi-fluid applicator tool 814 includes an auxiliary supply tank 826 and a pump assembly 828, which includes a liquid pump 832 and an air pump 834. In some aspects, the pump assembly 828 may include at least one foam pump in place of the separate liquid pump 832 and air pump 834. The multi-fluid applicator tool 814 includes a suction nozzle 846 having a front suction nozzle 848, and a dispenser 852 for extruding foam. The multi-fluid applicator tool 814 includes support features 854 for supporting or defining various components, and defining a portion of a recovery flow path 858 together with the suction nozzle 846, a foam dispensing path 860 together with the dispenser 852, and a portion of a liquid dispensing path 862.

[0116] Pump assembly 828 is in fluid communication with dispenser 852 via dispensing conduit 870, which may include a liquid portion 872, an air portion 874, and an end portion 876. A screen or mesh filter 878 is operatively coupled to conduit 870 for generating bubbles in foam. Dispenser 852 includes chamber 884 having an inlet 886 in fluid communication with conduit 870 and an outlet 888. Fluid outlet 896 is operatively coupled to outlet 888 of chamber 884 and includes at least one opening 898 for dispensing fluids (including foam and liquid).

[0117] The multifluid applicator tool 814 also includes a user interface 904 for controlling various aspects of the foam system 10, the user interface including a combination foam and an activation slider 910. Additional control aspects, such as foam flow rate, may be included on the applicator tool 814 or may be located on the cleaning device 12 without departing from the teachings herein.

[0118] Still referencing Figures 19 to 23 The support feature 854 includes an increased internal volume, and the receiving portion from the distal end 918 to the receiving rod 56 has a more square shape. The increased internal volume facilitates the accommodation of multiple foam-generating components and provides a liquid dispensing path 862. The support feature 854 defines a front suction nozzle 848, which has a slightly arcuate shape for drawing fluid into the interior of the support feature 854 and sucking it toward the rod 56. The inlet 920 of the front suction nozzle 848 can be located at the foremost position of the applicator tool 814. The inlet 920 extends laterally and is thinner in the posterior-posterior direction to create a vacuum effect. The front suction nozzle 848 narrows from the inlet 920 to guide the recovered fluid into the support feature 854 along the recovery flow path 858.

[0119] Support feature 854 is configured to receive and support auxiliary supply tank 826, pump assembly 828, and auxiliary power supply 936. In the illustrated configuration, auxiliary supply tank 826 is disposed within the distal portion of support feature 854. Auxiliary supply tank 826 is primarily or entirely disposed within the interior of support feature 854. In various aspects, auxiliary supply tank 826 may be removable for filling or cleaning. Support feature 854 defines a side opening 956 aligned with an opening into auxiliary supply tank 826. Auxiliary supply tank 826 includes a cap 958 that is positionable within side opening 956 to close auxiliary supply tank 826 and removable to add additional cleaning fluid to auxiliary supply tank 826.

[0120] In the illustrated configuration, the multifluid applicator tool 814 includes separate liquid pump 832 and air pump 834, adjacent to each other and adjacent to an auxiliary supply tank 826. Pump assembly 828 is positioned closer to lever 56 and arranged side-by-side with auxiliary supply tank 826. Connecting conduit 960 is in fluid communication with auxiliary supply tank 826 and liquid pump 832. Air pump 834 includes a port for drawing air into conduit 870. Conduit 870 has a liquid portion 872 connected to liquid pump 832, an air portion 874 connected to air pump 834, and an end portion 876 where liquid and air are mixed to be dispensed as foam.

[0121] Still referencing Figure 20 and Figure 21 A dispensing conduit 870 fluidly connects the pump assembly 828 and the chamber 884 of the dispenser 852. The dispensing conduit 870 extends along the inside of the front nozzle 848. The end portion 876 of the dispensing conduit 870 guides foam to the surface to be cleaned. A mesh filter 878 is operatively coupled to the dispensing conduit 870 to cause microbubble formation, thereby generating foam. In the illustrated configuration, the dispensing conduit 870 extends through the inlet 886 of the chamber 884 and is coupled to the support feature 854 near the front nozzle 848. The dispensing conduit 870 is in fluid communication with a fluid outlet 896, which is configured as a nozzle spaced apart from the surface to be cleaned. As shown, the fluid outlet 896 opens within the chamber 884, allowing the chamber 884 to act as a guide for the dispensed foam. It is conceivable that the fluid outlet 896 could be positioned closer to the outlet 888 of the chamber 884. Furthermore, it is conceivable that the dispensing conduit 870 can be attached to a frame (such as the frame described herein) to extrude the foam into a wider band.

[0122] The multi-fluid applicator tool 814 includes a scrubbing assembly 974 having a base 976 and bristles 978 extending from the base 976. The bristles 978 are arranged along the width of the multi-fluid applicator tool 814 and extend beyond the fluid outlet 896. The bristles 978 provide a scrubbing and cleaning function for the multi-fluid applicator tool 814. The bristles 978 can also aid in the cleaning function when using dispensing liquid from the main supply tank 24.

[0123] Dispensing conduit 870 forms part of foam dispensing path 860 and liquid dispensing path 862. Liquid delivery system 124 is in fluid communication with dispensing conduit 870. Outlet connector 986 of lever 56 is disposed within outlet housing 988 of support feature 854. Delivery conduit 990 extends into outlet housing 988 and is in fluid communication with liquid passage 66 via lever 56. Delivery conduit 990 extends through support feature 854 to be in fluid communication with dispensing conduit 870. Thus, when the user presses trigger 184 on lever 56, cleaning fluid from main supply tank 24 flows through lever 56, through support feature 854, and is dispensed via fluid outlet 896. Thus, multi-fluid applicator tool 814 can selectively dispense both foam and additional cleaning fluid.

[0124] The multifluid applicator tool 814 includes an auxiliary power supply 936 disposed near the auxiliary supply tank 826 and the pump assembly 828 to power components of the applicator tool 814. In the illustrated configuration, the auxiliary power supply 936 is positioned above the pump assembly 828 and at least partially below the recovery flow path 858.

[0125] refer to Figure 22 and Figure 23 The multi-fluid applicator tool 814 includes a combined slider 910 for controlling both foam generation and vacuum effects via the suction source 18. The combined slider 910 functions both as an on / off switch for the pump assembly 828 and as a selective blocking device for the fluid recovery path. Figure 4 and Figure 5 The publicly available configuration is similar. Figure 22 and Figure 23 The combined slider 910 can selectively allow, reduce, or prevent fluid communication between the suction nozzle 846 and the suction source 18. The combined slider 910 can be used in conjunction with individual activation features that control the activation and deactivation of the suction source 18.

[0126] The combined slider 910 is operatively coupled to the support feature 854. The slider 910 includes a user-accessible engagement feature 1038 for moving the slider 910 and an internal blocking feature 1040. The slider 910 can be configured to move in a rear-facing direction between a first position, a second position, and a third position. In the first position, the slider 910 is in the rearward position, as... Figure 22 As shown, this moves the internal blocking feature 1040 closer to the rod 56 and deactivates the pump assembly 828. This position of the blocking feature 1040 provides space between the blocking feature 1040 and the internal channel 1042 of the support feature 854, thereby defining a recovery flow path 858 between the interior of the support feature 854 near its distal end 918 and the nozzle 56. This position creates a vacuum effect without generating foam.

[0127] When slider 910 is adjusted to the second position (which is typically further forward than the first position), blocking feature 1040 moves closer to the internal channel 1042, but still leaves space to define the recovery flow path 858. In some respects, the smaller space can increase the vacuum effect through support feature 854. In the second position, slider 910 activates pump assembly 828 to generate and dispense foam. Therefore, when slider 910 is in the second position, the vacuum effect and foam generation occur simultaneously. The second position is typically... Figure 22 and Figure 23 The positions between the indicated locations.

[0128] like Figure 23 As shown, in the third position, compared to the first and second positions, slider 910 moves closer to the distal end 918 of support feature 854 in the forward position. Internal blocking feature 1040 moves to enter or abut internal channel 1042 to reduce or block fluid communication between rod 56 and front nozzle 848. In the third position, slider 910 maintains pump assembly 828 active to generate foam. Therefore, in the third position, a vacuum effect may not be generated at inlet 920 when foam is generated and dispensed. This position can facilitate foam extrusion without immediately or rapidly removing the foam from the cleaned surface using a vacuum.

[0129] The multi-fluid applicator tool 814 houses components for generating foam. Furthermore, the multi-fluid applicator tool 814 is in fluid communication with the suction source 18 and the liquid delivery system 124 to enhance the functionality of the foam system 10.

[0130] Now for reference Figures 24 to 26 The applicator tool 14, shown as a scrubbing applicator tool 1114, forms an extension of the components in the cleaning device 12 by using a main supply tank 24. The scrubbing applicator tool 1114 houses several components for generating foam and utilizes other components operatively coupled to the base housing 120 of the cleaning device 12. The applicator tool 1114 includes a pump assembly 1128 having an air pump 1134. The scrubbing applicator tool 1114 includes a suction nozzle 1146 having a front suction nozzle 1148, and a dispenser 1152 for dispensing foam. The scrubbing applicator tool 1114 includes support features 1154 for supporting or defining the various components, and defining a portion of a recovery flow path 1158 with the suction nozzle 1146, a foam dispensing path 1160 with the dispenser 1152, and a liquid dispensing path 1162.

[0131] Pump assembly 1128 is in fluid communication with dispenser 1152 via dispensing conduit 1170, which may include an air portion 1174 and an end portion 1176. Dispenser 1152 includes a screen or mesh filter 1178 and a chamber 1184 having an inlet 1186 and an outlet 1188 in fluid communication with conduit 1170. Mesh filter 1178 is operatively coupled to fluid outlet 1196 of conduit 1170 for generating bubbles and dispensing bubbles into foam. Fluid outlet 1196 is described as a nozzle. In various aspects, screen 1178 is integrally formed with fluid outlet 1196 to form a mesh nozzle. Fluid outlet 1196 is operatively coupled to outlet 1188 of chamber 1184 and includes at least one opening 1198 for dispensing foam.

[0132] The scrubbing applicator tool 1114 also includes a user interface 1204 for controlling various aspects of the foam system 10, the user interface including an activation slider 1210. Activating the slider 1210 can activate the air pump 1134. Activating the slider 1210 can also control the recovery flow path 1158. Without departing from the teachings of this document, additional control aspects such as for the suction source 18 and for controlling the foam flow rate may be included on the applicator tool 1114 or may be located on the cleaning device 12.

[0133] Still referencing Figures 24 to 26 The support feature 1154 includes a receiving portion for receiving the rod 56 and has a more squared distal end 1218. The support feature 1154 defines a front suction nozzle 1148, which has a slightly arcuate shape for drawing fluid into the interior of the support feature 1154 and towards the rod 56. Based on the configuration of the front suction nozzle 1148, the recovery flow path 1158 has a different thickness. The inlet 1220 of the front suction nozzle 1148 can be located at the foremost position of the applicator tool 1114. The inlet 1220 elongates in the lateral direction and is thinner in the longitudinal direction to create a vacuum effect. The front suction nozzle 1148 narrows from the inlet 1220 to guide the recovered fluid into the support feature 1154 along the recovery flow path 1158.

[0134] Still referencing Figures 24 to 26 The scrubbing applicator tool 1114 houses an auxiliary power supply 1236, and an air pump 1134 is powered by the auxiliary power supply 1236. The scrubbing applicator tool 1114 also includes a scrubbing assembly 1274, positioned adjacent to and rearward of the inlet 1220. The scrubbing assembly 1274 extends across the width of the scrubbing applicator tool 1114. The scrubbing assembly 1274 includes a base 1276 coupled to a support feature 1154 and bristles 1278 extending from the base 1276, the bristles extending beyond the inlet 1220.

[0135] Fluid outlet 1196 is operatively connected to scrubbing assembly 1274. For example, fluid outlet 1196 is connected to a mesh tip 1178, which is connected to scrubbing assembly 1274 and centrally positioned within bristles 1278. Bristles 1278 then function to disperse foam, thereby forming a foam band. In this way, foam is distributed into bristles 1278 and then onto the surface being cleaned.

[0136] The scrubbing applicator tool 1114 does not typically contain foaming chemicals; instead, the foaming chemicals are contained within the main supply tank 24 of the cleaning device 12. A user can actuate a trigger 184 on lever 56 to direct cleaning fluid along the liquid channel 66 into the scrubbing applicator tool 1114. An outlet connector 186 of lever 56 is disposed within the outlet housing 1288 of support feature 1154. A dispensing conduit 1170 forms part of a foam dispensing path 1160 and a part of a liquid dispensing path 1162. A delivery conduit 1290 extends into the outlet housing 1288 and is in fluid communication with the liquid channel 66 of lever 56. The delivery conduit 1290 extends through support feature 1154 to be in fluid communication with dispensing conduit 1170. Therefore, when the user presses the trigger 184 on lever 56, cleaning fluid from the main supply tank 24 flows through lever 56, through support feature 1154, and to the dispensing outlet 1170.

[0137] The distribution conduit 1170 includes an air section 1174 connected to the air pump 1134 and an end section 1176 of the distribution conduit 1170. A delivery conduit 1290 is connected to the end section 1176 of the distribution conduit 1170, thereby allowing cleaning fluid and air to mix within the end section 1176 of the distribution conduit 1170. The mixture of air and cleaning fluid flows through the end section 1176 and the mesh fluid outlet 1196.

[0138] Still referencing Figures 24 to 26 Foam generation is controlled by activating slider 1210. In the illustrated configuration, activating slider 1210 is a slide switch for activating and deactivating air pump 1134. When activating slider 1210 is adjusted to the "on" position and air pump 1134 is activated, pressing trigger 184 to release cleaning fluid results in foam generation. When activating slider 1210 is adjusted to the "off" position and air pump 1134 is deactivated, pressing trigger 184 to release cleaning fluid results in foam dispensing. Although the illustrated configuration shows slider 1210 used to activate foam generation, slider 1210 can also control the vacuum effect. In this type of configuration, the configuration and operation of slider 1210 are similar to... Figures 19 to 23 The description of the applicator tool 814 is the same.

[0139] Based on the activation of the air pump 1134, the applicator tool 1114 can dispense both foam and liquid. Therefore, different cleaning procedures can be performed using the applicator tool 1114, and the dispensed liquid and foam can be dispensed using vacuum suction from the suction source 18.

[0140] Now for reference Figures 27 to 31 The image shows a turbine applicator tool 1314 (i.e., one of the exemplary configurations of applicator tool 14). Turbine tool 1314 includes a pump assembly 1328 comprising an air pump fan 1334 and a turbine 1340. Turbine applicator tool 1314 includes a suction nozzle 1346 having a front suction nozzle 1348 and a dispenser 1352 for dispensing or extruding foam. Turbine applicator tool 1314 includes support features 1354 for supporting or defining various components, defining a portion of a recovery flow path 1358 together with the suction nozzle 1346, and defining a foam dispensing path 1360 together with the dispenser 1352.

[0141] Pump assembly 1328 is in fluid communication with dispenser 1352 via dispensing conduit 1370, the dispensing conduit including an insertion portion 1372 and an end portion 1376. A screen 1378 is operatively coupled to conduit 1370 for generating bubbles in foam. Dispenser 1352 includes chamber 1384 having an inlet 1386 in fluid communication with dispensing conduit 1370 and an outlet 1388. Foam outlet 1396 is operatively coupled to outlet 1388 of chamber 1384 and includes at least one opening 1398 for dispensing foam.

[0142] The turbine applicator tool 1314 also includes a user interface 1404 for controlling various aspects of the foam system 10, the user interface including a suction control slider 1410. Without departing from the teachings herein, additional control aspects such as for the suction source 18 and for controlling the foam flow rate may be included on the applicator tool 1314 or may be located on the cleaning device 12.

[0143] Support feature 1354 includes a receiving portion for receiving rod 56 and has a larger distal end 1418. Support feature 1354 defines a front suction nozzle 1348 having a slightly arcuate shape for drawing fluid into the interior of support feature 1354 and towards rod 56. The recovery flow path 1358 through front suction nozzle 1348 is larger than other configurations described herein. The inlet 1420 of front suction nozzle 1348 can be located at the foremost position of applicator tool 1314. Inlet 1420 extends laterally and is thinner in the anteroposterior direction to create a vacuum effect. Front suction nozzle 1348 narrows from inlet 1420 to guide recovered fluid into support feature 1354 along recovery flow path 1358.

[0144] The front suction nozzle 1348 is in selective fluid communication with the suction source 18. A recovery flow path 1358 is controllable by a control slider 1410. The control slider 1410 includes a user-accessible engagement feature 1438 for moving the slider 1410 and an internal blocking feature 1440. The slider 1410 is configured to move in a forward and backward direction between a closed position and an open position to selectively prevent and allow vacuum effects at the front suction nozzle 1348, as described herein.

[0145] Support feature 1354 includes side discs 1452, 1454 located on opposite sides. Side discs 1452, 1454 are thin and extend in a direction generally perpendicular to the longitudinal extent of support feature 1354. First side disc 1452 houses air pump fan 1334, and second side disc 1454 houses turbine 1340. Side discs 1452, 1454 are sized and shaped to operate air pump fan 1334 and turbine 1340 to rotate about their respective axes of rotation. Turbine 1340 provides power to generate airflow, replacing auxiliary power or electrical connection via accessory hose 16.

[0146] A vacuum effect is used to drive the turbine 1340 to rotate. The turbine 1340 is operatively coupled to an air pump fan 1334 to drive the air pump fan 1334 to rotate. Therefore, rotating the turbine 1340 through the vacuum effect drives the air pump fan 1334 to rotate. The air pump fan 1334 generates an airflow, which is typically driven into an air insertion portion 1372 of a distribution duct 1370. The air insertion portion 1372 may typically be an air guide device for capturing air and directing it into the duct 1370. The airflow generated by the turbine 1340 and the air pump fan 1334 mixes with cleaning fluid to form foam.

[0147] Still referencing Figure 28 The foaming chemical is contained within the main supply tank 24 of the cleaning device 12. A user can actuate a trigger 184 on lever 56 to direct cleaning fluid along the liquid passage 66 into the applicator tool 1314. An outlet connector 186 of lever 56 is disposed within an outlet housing 1588 of support feature 1354. A delivery conduit 1590 extends into the outlet housing 1588 and is in fluid communication with the liquid passage 66. The delivery conduit 1590 extends through support feature 1354 to be in fluid communication with the end portion 1376 of dispensing conduit 1370.

[0148] Therefore, when the user presses the trigger 184 on lever 56, cleaning fluid from the main supply tank 24 flows through lever 56, through support feature 1354, and to dispensing outlet 1370. Air mixes with the cleaning fluid in end portion 1376 to form foam. Mesh screen 1378 is operatively connected to dispensing conduit 1370 to form bubbles within the foam.

[0149] In the illustrated configuration, a dispensing conduit 1370 extends through an inlet 1386 of a chamber 1384 and connects to a support feature 1354 near a front suction nozzle 1348. The dispensing conduit 1370 is in fluid communication with a foam outlet 1396, which is configured as a nozzle spaced apart from the surface to be cleaned. As shown, the foam outlet 1396 opens within the chamber 1384, allowing the chamber 1384 to act as a guide for the dispensed foam. It is conceivable that the foam outlet 1396 could be positioned closer to an outlet 1388 of the chamber 1384 or connected to a frame (such as the frame described herein) to extrude the foam into a wider band.

[0150] refer to Figure 29 and Figure 30 The turbine applicator tool 1314 utilizes a suction source 18 to generate an airflow for foam formation and uses a vacuum to draw foam and other debris into a recovery tank 20. In some cases, a recovery flow path 1358 is formed to capture the dispensed foam, and in others, a power-generating airflow path 1594 is formed to drive the turbine 1340. The user interface 1404 includes a control slider 1410 operably coupled to a support device between side plates 1452, 1454. The control slider 1410 includes a user-accessible engagement feature 1438 for moving the slider 1410 and an internal blocking feature 1440. The control slider 1410 is operable between a "foam" position and a "suction" position.

[0151] like Figure 29 As shown, in the "foam" position, the internal blocking feature 1440 moves forward to abut against the abutment element 1596 in the support feature 1354 to block the vacuum effect at the front inlet 1420. An additional vent 1598 may be defined in the support feature 1354 for a powered airflow path 1594 that draws in and / or exhausts air. The suction source 18 is activated, and air is drawn into the support feature 1354 near the turbine 1340 to drive the rotational movement of the turbine 1340. The shape of the side plate 1454 facilitates the rotational path of the driven air (e.g., ...). Figure 28 (As shown). Airflow drives turbine 1340, which in turn drives air pump fan 1334 to drive air into distribution duct 1370. When slider 1410 is in the "foam" position, foam is generated and distributed when the user presses trigger 184.

[0152] like Figure 30As shown, in the "suction" position, the internal blocking feature 1440 moves toward the lever 56 away from the abutment element 1596, thereby defining a space between them. The suction source 18 then communicates fluidly with the inlet 1420 through the space between the blocking feature 1440 and the abutment element 1596. Airflow is driven along the recovery flow path 1358, which may not cause the turbine 1340 to rotate, or may cause minimal rotation of the turbine. Therefore, very little or no air is generated and driven into the distribution conduit 1370. When the slider 1410 is in the "suction" position, cleaning fluid is distributed as a liquid when the user presses the trigger 184. In this way, the distribution conduit 1370 forms part of the foam distribution path 1360 and the liquid distribution path 1162.

[0153] Further reference Figure 31 The turbine applicator tool 1314 may optionally include a rotating brush 1600. The rotating brush 1600 may be operatively coupled to a turbine 1340 via gears 1602, 1604 and a belt 1606 or other similar components for transmitting rotational movement. The turbine 1340 is configured to drive the drive gear 1602 to rotate, which in turn drives the driven gear 1604 to rotate. The driven gear 1604 meshes with a belt 1606, shown as a toothed belt. The toothed belt 1606 is coupled to a shaft 1608 of the rotating brush 1600. Rotation of the turbine 1340 is configured to drive the rotating brush 1600 to rotate via gears 1602, 1604 and belt 1606. The rotating brush 1600 may provide additional cleaning functionality to the turbine applicator tool 1314. In various aspects, rotation of the brush 1600 may be transmitted to the turbine 1340, which may contribute to driving the air pump fan 1334.

[0154] The turbine applicator tool 1314 includes an air pump fan 1334 driven by a turbine 1340 and a suction source 18, and utilizes a main tank 24 operatively connected to the cleaning device 12 to contain foaming cleaning fluid. Therefore, the turbine applicator tool 1314 can dispense foam and liquid, and utilize vacuum suction to remove liquid and debris from the surface being cleaned. Furthermore, the turbine applicator tool 1314 typically does not have an electronic power component.

[0155] refer to Figure 32 and Figure 33The image shows an applicator tool 14 configured as a manually activated application tool 1714. The manually activated applicator tool 1714 includes an auxiliary supply tank 1726 and a pump assembly 1728, which includes a manual liquid pump 1732 and an air source 1740. The manually activated tool 1714 includes a suction nozzle 1746 with a front suction nozzle 1748 and a dispenser 1752 for dispensing or extruding foam. The manually activated tool 1714 includes support features 1754 for supporting or defining various components, and defining a portion of a recovery flow path 1758 together with the suction nozzle 1746 and a foam dispensing path 1760 together with the dispenser 1752.

[0156] Pump assembly 1728 is in fluid communication with dispenser 1752 via dispensing conduit 1770, which includes a liquid portion 1772, an air portion 1774, and an end portion 1776. A screen or mesh filter 1778 is operatively coupled to conduit 1770 for generating bubbles in foam. Dispenser 1752 includes chamber 1784 having an inlet 1786 in fluid communication with conduit 1770 and an outlet 1788. Foam outlet 1796 is operatively coupled to outlet 1788 of chamber 1784 and includes at least one opening 1798 for dispensing foam.

[0157] The manual activation applicator tool 1714 also includes a user interface 1804 for controlling various aspects of the foam system 10, the user interface including a foam activation grip 1806. Without departing from the teachings herein, additional control aspects such as for the suction source 18 and for controlling the foam flow rate may be included on the applicator tool 1714 or may be located on the cleaning device 12.

[0158] Support feature 1754 includes a receiving portion for receiving rod 56 and has a larger distal end 1818 for accommodating multiple components for generating foam. Support feature 1754 defines a front suction nozzle 1748 having a slightly arcuate shape for drawing fluid into the interior of support feature 1754 and sucking it toward rod 56. The inlet 1820 of the front suction nozzle 1748 is in fluid communication with suction source 18 and can be located at the foremost position of applicator tool 1714. Inlet 1820 elongates in the lateral direction and is thinner in the longitudinal direction to create a vacuum effect. The front suction nozzle 1748 narrows from inlet 1820 to guide recovered fluid into support feature 1754 along recovery flow path 1758.

[0159] Support feature 1754 is configured to receive and support auxiliary supply tank 1726. In the illustrated configuration, support feature 1754 includes side protrusions 1852, 1854 to increase the space within support feature 1754 for auxiliary supply tank 1726. Auxiliary supply tank 1726 is substantially or entirely disposed within the interior of support feature 1754. Support feature 1754 defines a side opening 1856 aligned with an opening for access to auxiliary recovery tank 20. Auxiliary supply tank 1726 includes a lid 1858, which is positionable within side opening 1856 to close auxiliary supply tank 1726 and removable to add additional cleaning fluid to auxiliary supply tank 1726.

[0160] The applicator tool 1714 includes a pressurized air source 1740 for supplying air to form foam and is generally used to drive the foam through a foam outlet 1796 of conduit 1770. In some aspects, the pressurized air source 1740 may be a compressed gas cylinder connected to an air section 1774 of conduit 1770. The air section 1774 of conduit 1770 may be connected at an end portion 1776 to a liquid section 1772 of conduit 1770, or compressed air may be added to an auxiliary supply tank 1726 (similar to...). Figures 15 to 18 The manual air pump 634 is included. Air source 1740 can release air via manual activation (such as a button). Compressed gas can be used to dispense foaming liquid from auxiliary supply tank 1726 and form bubbles to produce foam. When the pressure inside the disposable air cylinder is depleted, the user can remove it and install a new air cylinder.

[0161] When valve 1868 is in the open position, pressurized air can drive cleaning fluid through connecting conduit 1860. Valve 1868 opens and closes fluid communication between connecting conduit 1860 and dispensing conduit 1770. Valve 1868 is operatively coupled to biasing member 1870 (shown as a helical spring). Biasing member 1870 is configured to bias valve 1868 to the closed position, which prevents foaming liquid from flowing to dispenser 1752. Valve 1868 is configured to be actuated when force is applied to foam activation grip 1806. Grip 1806 is coupled to support feature 1754 and includes tab 1872 that engages valve 1868. When grip 1806 is pressed toward support feature 1754, tab 1872 presses against valve 1868 and overcomes the biasing force to adjust valve 1868 to the open position. The valve 1868, which is in the open position, releases the foaming chemical from the auxiliary supply tank 1726 through the connecting conduit 1860 and the dispensing conduit 1770.

[0162] Still referencing Figure 32 and Figure 33In the illustrated configuration, a dispensing conduit 1770 extends through an inlet 1786 of a chamber 1784 and is coupled to a support feature 1754 near a front suction nozzle 1748. The dispensing conduit 1770 is in fluid communication with a foam outlet 1796, which is spaced apart from the surface to be cleaned. As shown, the foam outlet 1796 opens within the chamber 1784, allowing the chamber 1784 to act as a guide for the dispensed foam. A mesh screen 1778 is operatively coupled to the dispensing conduit 1770 to induce microbubble formation, thereby generating foam. It is conceivable that the foam outlet 1796 could be positioned closer to the outlet 1788 of the chamber 1784. Furthermore, it is conceivable that the dispensing conduit 1770 could be coupled to a frame (such as the frame described herein) to extrude the foam into a wider band.

[0163] The applicator tool 1714 also includes a scrubbing assembly 1874 coupled to a support feature 1754. The scrubbing assembly 1874 includes a base 1876 disposed within and coupled to the support feature 1754 in a rearward direction of the inlet 1820. The scrubbing assembly 1874 includes bristles 1878 extending from the base 1876. The bristles 1878 are arranged along the width of the applicator tool 1714 and extend beyond the outlet 1788. The bristles 1878 provide a scrubbing and cleaning function for the applicator tool 1714.

[0164] The applicator tool 1714 contains components to generate foam upon manual activation. The applicator tool 1714 can also utilize a suction source 18 to vacuum-drain foam from the surface being cleaned. The applicator tool 1714 may not be in fluid communication with the liquid delivery system 124.

[0165] refer to Figures 34 to 40 The applicator tool 14 is described as a foam applicator tool 2014 or foam tool 2014. The foam tool 2014 includes an auxiliary supply tank 2026 and a pump assembly 2028. Typically, the pump assembly 2028 includes a foam pump 2036 with an air inlet 2086, a port 2038, and a motor 2040. The foam tool 2014 also includes a suction nozzle 2046 configured as a front suction nozzle 2048, and a dispenser 2052 for extruding foam.

[0166] The foam tool 2014 includes a support feature 2054, which includes a tubular section 2056 for receiving a rod 56. The support feature 2054 supports and defines various components. For example, the support feature 2054 defines at least a portion of a recovery flow path 2058 and a foam dispensing path 2060. The support feature 2054 also houses a pump assembly 2028, which is in fluid communication with a dispenser 2052 via a dispensing conduit 2070.

[0167] Distributor 2052 includes at least one mesh filter 2078, which may include two screens 2080, 2082. In some respects, the two screens 2080, 2082 may be identical or similar. For example, screens 2080 and 2082 may both be 200-mesh stainless steel screens. Alternatively, screens 2080, 2082 may be a first coarse screen 2080 and a second or fine screen 2082. In such examples, screens 2080, 2082 define different porosities. Screens 2080, 2082 are typically disposed within a chamber 2084 through which cleaning fluid is guided.

[0168] Chamber 2084 has an inlet 2086 in fluid communication with dispensing conduit 2070 for receiving cleaning fluid, and an outlet 2088 for dispensing foam. In addition to screens 2080 and 2082, an extrusion manifold 2096 may also be positioned within chamber 2084. At least one opening 2098 of the extrusion manifold 2096 is in fluid communication with outlet 2088 for extruding foam, typically into a foam tape.

[0169] Additionally, the foam tool 2014 includes a user interface 2104 for controlling various aspects of the foam system 10. For example, the user interface 2104 may include features for activating and / or controlling foam generation. In such an example, the user interface 2104 of the foam tool 2014 includes a foam activation button 2106.

[0170] refer to Figures 34 to 37 The support feature 2054 includes an elongated tubular segment 2056, which is configured to receive the rod 56 of the cleaning device 12. Figure 1A The elongated segment 2056 may have a substantially hollow interior, thus forming part of the recycling flow path 2058. The support feature 2054 also includes a head or distal end 2118. The distal end 2118 extends from the tubular segment 2056 at an angle (typically an obtuse angle). The tubular segment 2056 can provide an ergonomic grip position for the user as the distal end 2118 extends toward the surface to be cleaned.

[0171] The distal end 2118 of the support feature 2054 typically includes a suction inlet 2120, a suction outlet 2122, and a suction channel 2124 extending therebetween. The distal end 2118 may include a support wall 2126 extending away from the tubular segment 2056 and at least partially forming the interior of the support feature 2054 and the suction channel 2124 on its opposite side. In various aspects, the foaming tool 2014 includes a front cap or lens 2128 coupled to the support feature 2054 adjacent to the support wall 2126. When the front lens 2128 is removed, the support wall 2126 forms the outer surface of the support feature 2054.

[0172] When the front lens 2128 is connected to the support feature 2054, the front lens 2128 extends from one end of the support wall 2126, which is configured to be adjacent to the surface to be cleaned, to the bend or junction between the support wall 2126 and the tubular segment 2056. A suction inlet 2120 may be defined between the support wall 2126 and the front lens 2128. In such examples, when the front lens 2128 is connected to the support feature 2054, a portion of the suction nozzle 2046 and the recovery flow path 2058 between the suction nozzle 2046 and the tubular segment 2056 of the support feature 2054 may be defined. The front lens 2128 may be selectively removed from the support feature 2054, which may facilitate cleaning the recovery flow path 2058. For example, the front lens 2128 may be removed to clean the suction channel 2124 between the front lens 2128 and the support wall 2126, and the recovery flow path 2058 within the tubular segment 2056. Removing the front lens 2128 allows access to clear or reduce any blockages in the recycle flow path 2058.

[0173] The support wall 2126 of the support feature 2054 may define a first connection position for the front lens 2128. The first connection position may be a receiving groove or an end surface of the support wall 2126. One end of the front lens 2128 may extend toward the support wall 2126 and engage the end surface or be disposed in the receiving groove. The support feature 2054 also includes a protrusion 2130 near the connection between the distal end 2118 and the tubular segment 2056 to provide a second connection position for the front lens 2128. The front lens 2128 includes a flexible tab 2132 that defines an aperture 2134 for engaging the protrusion 2130 at the second connection position. The flexible tab 2132 may elastically deform as it moves over the protrusion 2130 until the protrusion 2130 is located in the aperture 2134, thereby connecting the front lens 2128 to the support feature 2054.

[0174] The junction between the front lens 2128 and the support wall 2126 may be located at the lateral edge of the support feature 2054 to define a suction nozzle 2046 between the front lens 2128 and the support wall 2126. Thus, the suction nozzle 2046 is defined by and between the front lens 2128 and the support wall 2126. In this way, the recovery flow path 2058 is defined at least partially by the support wall 2126 and at least partially by the front lens 2128.

[0175] Suction nozzle 2046 defines a suction inlet 2120 configured adjacent to the surface to be cleaned and a suction outlet 2122 leading to the interior of a tubular section 2056 of support feature 2054. Suction inlet 2120 is generally elongated in the lateral direction and narrower in the longitudinal direction, which can help create a vacuum effect at suction inlet 2120. Suction outlet 2122 is generally a transition point between the portion of recovery flow path 2058 defined between support feature 2054 and front lens 2128 and the portion of recovery flow path 2058 entirely defined by support feature 2054. Suction channel 2124 is defined between support wall 2126 and front lens 2128 to guide fluid and debris material along recovery flow path 2058 between inlet 2120 and outlet 2122.

[0176] Compared to outlet 2122, support feature 2054 and front lens 2128 typically have a larger width at inlet 2120 of suction nozzle 2046. This results in suction channel 2124 gradually tapering from inlet 2120 to outlet 2122. This tapering can help generate a vacuum effect to suction debris from the surface being cleaned.

[0177] Still referencing Figures 34 to 37 Support feature 2054 is typically configured to support auxiliary supply canister 2026. Foam tool 2014 includes connector 2142 for supporting auxiliary supply canister 2026 and at least partially forming the interior of foam tool 2014. In this respect, support wall 2126 forms the front portion of the interior of foam tool 2014, and connector 2142 forms the rear portion of the interior of foam tool 2014. Thus, suction nozzle 2046 is formed at the front portion of foam tool 2014, and auxiliary supply canister 2026 is located at the rear portion of foam tool 2014, generally aligned with the tubular segment 2056 of support feature 2054. Connector 2142 includes one or more flanges 2144 extending into the interior of foam tool 2014, said flanges being configured to receive fasteners 2146 for coupling connector 2142 and thus auxiliary supply canister 2026 to support feature 2054.

[0178] Typically, when cleaning with the foam tool 2014, the auxiliary supply canister 2026 is positioned close to or on the surface being cleaned. As shown, the auxiliary supply canister 2026 has a rectangular extension 2148 for engaging the connector 2142 and a circular segment 2150 for maximizing the capacity to hold the cleaning fluid. The auxiliary supply canister 2026 may be spaced apart from the surface being cleaned. However, when the foam tool 2014 is used at certain angles, the auxiliary supply canister 2026 may engage with or move over the surface being cleaned. The auxiliary supply canister 2026 may include a generally smooth lower surface 2152, which can be advantageous when the auxiliary supply canister 2026 moves over the surface being cleaned while using the foam tool 2014. In this respect, the auxiliary supply canister 2026 can move smoothly over the surface being cleaned without significantly hindering the cleaning process.

[0179] refer to Figures 36 to 38 The auxiliary supply canister 2026 includes a body 2154, which may include a rectangular extension 2148 and a circular segment 2150. The body 2154 defines an opening 2156 for adding additional cleaning fluid and a cap 2158 operatively coupled to the body 2154 to close the opening 2156. The cap 2158 may be pivotally coupled to the body 2154. In some aspects, the body 2154 of the auxiliary supply canister 2026 includes a recessed area or notch that allows a user to engage an edge of the cap 2158 to open the cap 2158. Alternatively or additionally, the cap 2158 may have a lip or other features for engaging and moving the cap 2158. The cap 2158 for the auxiliary supply canister 2026 may define a locking or latching feature to hold the cap 2158 in a closed position.

[0180] The auxiliary supply tank 2026 may include through-holes 2170, 2172 and umbrella valves 2174, 2176 extending through the through-holes 2170, 2172. In the illustrated configuration, the auxiliary supply tank 2026 includes two through-holes 2170, 2172 and two umbrella valves 2174, 2176, the two umbrella valves extending in opposite directions through the respective through-holes 2170, 2172. For example, the first umbrella valve 2174 includes a wider head inside the auxiliary supply tank 2026, while the second umbrella valve 2176 includes a wider head outside the auxiliary supply tank 2026. The heads of the umbrella valves 2174, 2176 are configured to deform in response to a pressure differential, thereby opening the through-holes 2170, 2172 and allowing fluid communication between the internal and external areas of the auxiliary supply tank 2026. When the cleaning solution is removed or pumped out of the auxiliary supply tank 2026, this configuration of the umbrella valves 2174 and 2176 in opposite directions helps to maintain a balanced and consistent pressure within the auxiliary supply tank 2026.

[0181] As shown in the figure, when the suction nozzle 2046 is arranged adjacent to the surface to be cleaned, the auxiliary supply tank 2026 is located below the tubular section 2056 of the support feature 2054. This configuration allows for a larger auxiliary support tank 2026, thereby maximizing the capacity of cleaning fluid that can be contained in the auxiliary supply tank 2026. Therefore, the foaming tool 2014 can be a foaming tool 2014 with a larger capacity or volume.

[0182] Still referencing Figure 37 and Figure 38 Foaming tool 2014 is configured to generate and extrude foam onto the surface to be cleaned. Foaming tool 2014 includes a foam pump 2036 having a motor 2040, an air inlet port 2038, a pump inlet 2186, and a pump outlet 2188. The pump inlet 2186 of foam pump 2036 is connected to a connecting conduit 2260. The connecting conduit 2260 extends from the interior of an auxiliary supply tank 2026 to the pump inlet 2186 of foam pump 2036. Typically, when the suction nozzle 2046 is arranged adjacent to the surface to be cleaned, the inlet end of the connecting conduit 2260 is positioned at or towards the bottom of the auxiliary supply tank 2026. This maximizes the amount of cleaning solution pumped from the auxiliary supply tank 2026 by foaming tool 2014. Foam pump 2036 is also in fluid communication with a dispensing conduit 2070. In this configuration, dispensing conduit 2070 is a single conduit in fluid communication with a chamber 2084.

[0183] Foam pump 2036 includes an air inlet port 2038 for drawing air into the foam pump 2036 to mix it internally with the cleaning fluid to form foam. In this respect, the cleaning fluid is pumped or directed through connecting conduit 2260, and the mixture of air and cleaning fluid (i.e., foam) flows through dispensing conduit 2070. Pump assembly 2028 includes a mesh feature 2262 at pump outlet 2188 of foam pump 2036. It is conceivable that mesh feature 2262 can be located anywhere in the foam dispensing path 2060 where the cleaning fluid and air have already mixed. For example, mesh feature 2262 could be a 200-mesh stainless steel sieve 2262. Mesh feature 2262 can facilitate the mixing of air and liquid and generate bubbles for foam. With mesh feature 2262, foam tool 2014 may include three mesh components 2080, 2082, 2262 along foam dispensing path 2060 to increase bubble generation in the foam.

[0184] When the foam pump 2036 is activated, cleaning fluid is drawn from the auxiliary supply tank 2026 through the connecting conduit 2260 and toward the foam pump 2036. Air is mixed with the cleaning fluid, and the mixture of air and cleaning fluid is guided through the mesh feature 2262, thereby forming bubbles in the foam. The foam is then guided through the dispensing conduit 2070 and toward the dispenser 2052.

[0185] Dispenser 2052 includes a chamber 2084 having an inlet 2086 and an outlet 2088. Chamber 2084 is at least partially defined by an end frame or dispensing frame 2268. Frame 2268 has an elongated body with a tab 2270 extending into a support feature 2054 and receiving a fastener 2272 for attaching frame 2268 to support feature 2054. As shown, frame 2268 is disposed adjacent to the inner surface of support wall 2126. Frame 2268 extends generally along the width of support wall 2126 to have a width similar to the width of inlet 2120 of suction nozzle 2046.

[0186] refer to Figure 38 and Figure 39 The frame 2268 defines an elongated, narrow chamber 2084. Similar to the suction nozzle 2046, the outlet 2088 of the dispenser 2052 is elongated in the lateral direction (i.e., width) and narrower in the longitudinal direction (i.e., depth). The front wall 2274 and rear wall 2276 of the frame 2268 can be angled away from each other, such that the depth of the inlet 2086 is less than the depth of the outlet 2088. This can facilitate the dispensing of foam onto the surface to be cleaned. Additionally, the height of the rear wall 2276 can be less than the height of the front wall 2274. This configuration can help align the outlet 2088 with the surface to be cleaned when the user moves the foam tool 2014. For example, the shorter rear wall 2276 and the outward angle of the walls 2274, 2276 can facilitate the formation of a foam band when the user pulls or moves the foam tool 2014 in the rearward direction.

[0187] and Figures 4 to 9 Compared to the frame 368 shown, the size, volume, or capacity of the chamber 2084 in the foam tool 2014 can be increased because the frame 2268 is connected to the support feature 2054 using a tab 2270, instead of the frame 2268 defining receiving recesses 370, 372 (see [link]). Figure 9 Alternatively or concurrently, chambers 284 and 2084 may be of similar dimensions, and Figure 38 and Figure 39 The frame 2268 shown can have a smaller footprint to fit inside the support feature 2054.

[0188] A cap 2278 is coupled to a frame 2268 near the inlet 2086 of chamber 2084. The cap 2278 extends across the inlet 2086 to substantially enclose chamber 2084 on one side. The cap 2278 includes an inlet port 2280A and an inlet guide 2280B to which a dispensing conduit 2070 is coupled. The inlet guide laterally directs foam in an opposite direction to initiate dispersion or diffusion of foam across the width of chamber 2084. Thus, foam or cleaning fluid flows through inlet port 2280A in a first direction (e.g., vertically) and is then guided in a second opposite direction (e.g., laterally), which is substantially perpendicular to the first direction.

[0189] The foam tool 2014 also includes two mesh screens 2080 and 2082 disposed within a chamber 2084. As previously mentioned, the porosities of the screens 2080 and 2082 may be similar, or the dispenser 2052 may include a coarse mesh screen 2080 and a fine mesh screen 2082. When the screens 2080 and 2082 are not identical, the coarse mesh screen 2080 is disposed upstream of the chamber 2084 near the cover 2278, and the fine mesh screen 2082 is disposed downstream of the outlet 2088. The mesh screens 2080 and 2082 are configured to generate bubbles in the foam. Therefore, the foam tool 2014 includes a mesh feature 2262 for generating bubbles, and two mesh screens 2080 and 2082 located downstream of the mesh feature 2262 for generating additional bubbles in the foam, which can enhance the cleaning function of the foam and assist the extrusion process.

[0190] A spacer 2282 is disposed between two screens 2080, 2082. The spacer 2282 maintains a distance between the screens 2080, 2082, which facilitates clean fluid flow through the chamber 2084 during bubble generation. The spacer 2282 is generally elongated and corresponds to the cross-sectional shape of the chamber 2084. The spacer 2282 includes a plurality of orifices 2284 arranged in a linear configuration. The orifices 2284 can help disperse or diffuse the foam across the width of the chamber 2084 as it flows through the chamber 2084.

[0191] Distributor 2052 also includes an extrusion manifold 2096 in fluid communication with outlet 2088 of chamber 2084. Typically, extrusion manifold 2096 is disposed within chamber 2084 and downstream of the two screens 2080, 2082. Extrusion manifold 2096 includes openings 2098 arranged in a linear configuration. In this respect, frame 2268 may include internal dividers extending generally in a front-rear direction. These dividers form openings 2098, which may operate similarly to orifices 2284 of spacer 2282. Extrusion manifold 2096 is configured to disperse extruded foam along the width of outlet 2088 to form an extruded foam band. In addition to spacer 2282, extrusion manifold 2096 may also contribute to uniformly distributing foam across the width of the band with a consistent thickness to provide a more consistent and controlled cleaning process. The opening 2098 of the extrusion manifold 2096 can be offset in the direction of movement (e.g., in the direction from the inlet 2086 to the outlet 2088) relative to the orifice 2284 of the spacer 2282, which also helps the foam to be distributed more evenly through the dispenser 2052.

[0192] Still referencing Figure 38 and Figure 39 The frame 2268 may include at least one spacer protrusion 2286 extending from at least a portion of the frame 2268. In the illustrated configuration, the frame 2268 includes two spacer protrusions 2286, with one spacer protrusion 2286 on at least a portion of the lower edge of each of the front wall 2274 and the rear wall 2276. The spacer protrusions 2286 extend in a direction parallel to the path of movement of the foam along the foam dispensing path 2060 at the outlet 2088. In this way, the spacer protrusions 2286 may abut against the surface to be cleaned, and the remaining lower edge of the frame 2268 (e.g., a lateral portion) may be spaced apart from the surface to be cleaned. In other words, the spacer protrusions 2286 may define the distance between the surface to be cleaned and the remainder of the dispenser 2052 (including the extrusion manifold 2096). This distance may help define the height of the extruded foam strip.

[0193] Refer again Figure 37 as well as Figure 38 and Figure 39In various aspects, the foam tool 2014 may also include a scrubbing assembly 2374 disposed near the dispenser 2052. In the illustrated configuration, the dispenser 2052 is disposed near the distal end 2118 of the support feature 2054 between the suction nozzle 2046 and the scrubbing assembly 2374. A base 2376 may extend between the dispenser 2052 and the connector 2142 to form at least a portion of the bottom of the foam tool 2014 and at least partially enclose the interior of the support feature 2054. In some aspects, the support feature 2054 forms a lateral edge of the bottom of the applicator tool, and the base 2376 extends between the lateral edges. It is contemplated that the base 2376 may be part of the scrubbing assembly 2374 or part of the support feature 2054.

[0194] The scrubbing assembly 2374 includes scrubbing features, such as bristles 2378, extending from the base 2376. The bristles 2378 may be arranged along the width of the foam tool 2014 and extend beyond the dispenser 2052. The length of the bristles 2378 may contribute to the height of the extruded foam strip and provide scrubbing cleaning functionality to the foam tool 2014.

[0195] refer to Figure 37 and Figure 40 The user interface 2104 of the foam tool 2014 includes a foam activation button 2106, which is shown located below the tubular section 2056 of the support feature 2054 and above the auxiliary supply canister 2026. This location facilitates efficient activation of the foam tool 2014 when the support feature 2054 is held, but other locations are also contemplated without departing from the teachings of this document.

[0196] like Figure 37 As shown, the support wall 2126 extends into the tubular segment 2056 of the support feature 2054 to define the boundary between the electrical component and the recycling flow path 2058. The support feature 2054 may include an insert 2390 that partially forms the tubular segment 2056. The insert 2390 and the support wall 2126 may form a space that at least partially accommodates the activation button 2106, thereby allowing the activation button 2106 and associated components to be separated from the recycling flow path 2058.

[0197] The user can press the activation button 2106 into the space formed by the insert 2390 and the support wall 2126. The user can grasp or hold the tubular segment 2056 of the foam tool 2014 to move the foam tool 2014 relative to the surface to be cleaned. When grasping the tubular segment 2056, the user can align one or more fingers with the activation button 2106. The user can squeeze, causing the activation button 2106 to move inward normally, thereby engaging the activation switch 2392. The activation switch 2392 is typically a momentary switch that communicates with and activates the foam pump 2036 when engaged and stops communicating when not engaged, thus deactivating the foam pump 2036. Therefore, when the user squeezes the activation button 2106 and the activation button 2106 engages the activation switch 2392, the foam pump 2036 is activated and produces foam. When the user releases the activation button 2106, the foam pump 2036 is deactivated, and foam production at least substantially stops.

[0198] In addition to the foam pump 2036 and the activation switch 2392, various components, including fluid guiding components and electronic components, can also be disposed within the foam tool 2014. For example, the foam pump 2036 can be disposed within the support feature 2054 near the support wall 2126. The support feature 2054 may have an internal support member 2400 to which the foam pump 2036 can be coupled to support the foam pump 2036. In the illustrated configuration, the foam pump 2036 is arranged near the junction between the distal end 2118 of the support feature 2054 and the tubular section 2056.

[0199] An auxiliary power source 2436, configured as battery assembly 2436, is also located within support feature 2054 and includes a power source such as battery 2438. In the illustrated configuration, battery 2438 is positioned close to base 2376 and connector 2142. Battery 2438 may be rechargeable or replaceable. This battery 2438 can power various electronic components of foam tool 2014. Battery assembly 2436 may include one or more circuits or circuit boards 2440. Battery assembly 2436 is operatively coupled to foam pump 2036, activation switch 2392, user interface 2104, and charging assembly 2442 to provide power thereto.

[0200] User interface 2104 includes a power indicator 2448 for conveying the power level of battery 2438. The power indicator 2448 is typically positioned near a protrusion 2130 on the outer surface of support feature 2054 for easy viewing by the user when using foam tool 2014. The power indicator 2448 may be an illuminated feature, such as an illuminated icon, that adjusts or otherwise displays the power level of battery 2438. The power indicator 2448 is included in user interface printed circuit board assembly (UI PCBA) 2450. UI PCBA 2450 is operatively coupled to auxiliary power supply 2436 for receiving power and power information to display to the user.

[0201] In all respects, the auxiliary power supply 2436 is rechargeable. In this example, the auxiliary power supply 2436 is also operatively coupled to the charging assembly 2442. In the illustrated configuration, the charging assembly 2442 includes a Universal Serial Bus Printed Circuit Board Assembly (USB PCBA) 2452 and a USB charging port 2454. The auxiliary power supply 2436 can be charged using the USB PCBA 2452.

[0202] Generally, the user interface 2104 of the foam tool 2014 may include components for controlling electronic components housed and supported within the foam tool 2014. In this respect, the user interface 2104 may be used to control features of the foam tool 2014 that are separable from the cleaning device 12. However, without departing from the teachings of this document, additional control features, such as those for the suction assembly 122 (see [link to documentation]), may also be included. Figure 2A This can be included on the foam tool 2014. Additionally, it is conceivable that additional foam-related controls may be included on the foam tool 2014 and / or the cleaning device 12. For example, the foam tool 2014 may include a flow control. Alternatively or additionally, the flow rate and / or the ratio of cleaning fluid to air may be preset or predefined.

[0203] Refer again Figure 1A and Figure 5 as well as Figures 34 to 40 Foaming tool 2014 is typically used to generate and extrude or dispense foam onto a surface to be cleaned. Suction nozzle 2046 is in fluid communication with suction source 18 to generate a vacuum effect to recover cleaning material (e.g., foam) and debris. In the example shown, foaming tool 2014 may not utilize liquid delivery system 124.

[0204] The foam tool 2014 may include a spray guard 2460, which may be fixedly or selectively coupled to a proximal end 2462 of a support feature 2054, at which the foam tool 2014 receives a rod 56. The spray guard 2460 may define a receiving channel 2464 that receives and provides a closed housing for the output connector 186. Therefore, the foam tool 2014 may prevent or reduce the exit of liquid from the outlet connector 186 (see...). Figure 5 ) and spray from near the foam tool 2014.

[0205] Additionally, the spray shroud 2460 may extend away from the distal end 2118 of the support feature 2054 and along the rod 56. The spray shroud 2460 may extend above the spray actuator 184 to reduce or prevent the user from engaging the spray actuator 184 and opening the valve 180 (see [link]). Figure 5 In this manner, when the spray shield 2460 is engaged with the support feature 2054, the foam tool 2014 may be unable to use the liquid delivery system 124. This can be advantageous due to the configuration of the foam tool 2414 and the location of the auxiliary supply tank 2026. Based on this configuration, the liquid sprayed from the outlet connector 186 can be dispensed onto the auxiliary supply tank 2026 instead of being dispensed onto the surface to be cleaned.

[0206] It is conceivable that the spray shield 2460 can be selectively removed, allowing the liquid delivery system 124 to be used with the foam tool 2014. In some respects, the spray shield 2460 can be removed, and the auxiliary supply tank 2026 can be detached from the connector 2142. The foam tool 2014 can then be used to spray liquid from the liquid delivery system 124, utilizing the vacuum effect of the suction source 18.

[0207] Refer again Figures 34 to 40 The user can grasp the tubular segment 2056 of the support feature 2054 and position the dispenser 2052 and suction nozzle 2046 adjacent to the surface to be cleaned. The user can adjust the activation button 2106 to engage the activation switch 2392, thereby activating the foam pump 2036. When the foam pump 2036 is activated, cleaning fluid is configured to be drawn from the auxiliary supply tank 2026 and directed to the dispenser 2052. Air is mixed with the cleaning fluid, and the mixed air and cleaning fluid are directed through the mesh feature 2262 and the two screens 2080, 2082 to generate bubbles and form foam. The foam tool 2014 is configured to dispense or extrude foam onto the surface to be cleaned. The foam tool 2014 can be used to scrub the cleaned surface using the scrubbing assembly 2374 and to recover foam and debris material via the suction nozzle 2046.

[0208] Refer to Figure 1 to Figure 40Each configuration of the applicator tool 14 disclosed herein can dispense or extrude foam for use in a cleaning process. In operation, the user can connect the applicator tool 14 to an accessory hose 16 to form a foam system 10. The foam system 10 includes one or more components for generating foam, creating a vacuum effect, dispensing liquid, controlling foam output, controlling foam density, and / or providing additional cleaning functions. Depending on the configuration of the cleaning equipment 12, the various applicator tools 14 can be interchanged to customize the user experience.

[0209] As disclosed herein, the foam system 10 can have various configurations, wherein certain features are operatively coupled to the base housing 120 of the cleaning device 12, and certain features are removably coupled to the cleaning device 12 by being included in the applicator tool 14. The foam system 10 includes various configurations for containing a foaming chemical within one of the supply tanks 22, for driving the foaming chemical toward the dispenser 52, for mixing air with the foaming chemical, for generating bubbles to form foam through a mesh screen 78, and for dispensing or extruding the foam. While certain combinations of features are disclosed herein, it is contemplated that any aspect may be moved or included in combinations different from those specifically described herein.

[0210] Using this system offers various advantages. For example, the generated foam can be controlled for different cleaning processes, such as deep cleaning with wetter foam or quick refresh cleaning with drier foam. Furthermore, the refresh cleaning process offers the advantage of faster drying, allowing users to use furniture more quickly after "refreshing" the upholstery. Additionally, the foam is typically extruded onto the surface being cleaned, providing a more consistent and controlled cleaning process. Moreover, the extruded foam forms a more visible foam band on the cleaned surface, providing feedback and confirmation to the user. Furthermore, the applicator tool 14 may include an auxiliary power supply 136 for powering components of the foam system 10, and / or electrical connections may extend through the accessory hose 16 to power components of the applicator tool 14. Additionally, the foam system 10 includes a mesh screen or mesh filter 78 for generating bubbles in a mixture of air and foaming chemicals to produce foam. Additional benefits and advantages can be realized and / or achieved.

[0211] The system disclosed herein is further summarized in the following paragraphs, and its features also lie in any and all combinations of the aspects described herein.

[0212] According to another aspect of this disclosure, a cleaning device includes a supply tank configured to store a cleaning fluid. At least one pump is in fluid communication with the supply tank. The at least one pump is configured to generate foam from the cleaning fluid and guide the cleaning fluid along a foam dispensing path. An applicator tool is operatively coupled to the at least one pump. The applicator tool defines a portion of the foam dispensing path for dispensing the foam. A user interface controls the dispensing of the foam through the applicator tool. The applicator tool includes a chamber having an inlet and an outlet in fluid communication with the at least one pump. A first screen is disposed within the chamber. A second screen is disposed within the chamber and downstream of the first screen. A spacer is disposed between the first screen and the second screen. An extrusion manifold is in fluid communication with the outlet of the chamber. The extrusion manifold defines at least one opening through which the foam is dispensed in response to interaction with the user interface.

[0213] According to another aspect of this disclosure, at least one pump is in fluid communication with a distribution conduit. The at least one pump includes a first pump that drives cleaning fluid through the conduit and a second pump that drives air through the conduit.

[0214] According to another aspect of this disclosure, the dispensing conduit includes a first conduit section connected to a first pump, a second conduit section connected to a second pump, and a third conduit section disposed between the first conduit section and the second conduit section. Cleaning fluid and air are mixed in the third conduit section.

[0215] According to another aspect of this disclosure, the spacer defines a plurality of orifices, and at least one opening of the extrusion manifold includes a plurality of openings. The plurality of orifices are offset relative to the plurality of openings in the direction of movement of the foam along the foam dispensing path through the chamber.

[0216] According to another aspect of this disclosure, an applicator tool includes an end frame that at least partially defines a chamber. The end frame includes spaced protrusions extending in a direction parallel to the direction of foam movement at an outlet. The spaced protrusions are configured to engage a surface being cleaned such that an extrusion manifold is spaced apart from the surface being cleaned, thereby defining a foam band of a certain height above the surface being cleaned.

[0217] According to another aspect of this disclosure, a recovery tank is operatively coupled to a suction source and configured to recover foam. An applicator tool defines at least one suction nozzle in fluid communication with the suction source and is configured to draw the foam into the recovery tank.

[0218] According to another aspect of this disclosure, the at least one suction nozzle includes: a first suction nozzle disposed on a first side adjacent to the outlet; and a second suction nozzle disposed on a second side adjacent to the outlet opposite to the first side of the outlet.

[0219] According to another aspect of this disclosure, a first suction nozzle defines a first inlet extending substantially parallel to an outlet on a first side. A second suction nozzle defines a second inlet extending substantially parallel to the outlet on a second side.

[0220] According to another aspect of this disclosure, the applicator tool includes a support feature. A first suction nozzle and a second suction nozzle are mechanically connected via the support feature.

[0221] According to another aspect of this disclosure, the user interface is configured to control suction at each of the first and second inlets.

[0222] According to another aspect of this disclosure, the user interface is configured to selectively initiate suction only at the first inlet, to initiate suction only at the second inlet, and to initiate suction simultaneously at each of the first and second inlets.

[0223] According to another aspect of this disclosure, the applicator tool is configured to dispense foam at a rate between 40 mL / min and 60 mL / min.

[0224] According to another aspect of this disclosure, the density of the distributed foam is between 10 g / L and 150 g / L.

[0225] According to another aspect of this disclosure, the first sieve and the second sieve are each defined as having 120 to 400 pores per square inch.

[0226] According to another aspect of this disclosure, the applicator tool includes a support feature and a front lens selectively coupled to the distal end of the support feature. The support feature and the front lens form a suction channel.

[0227] According to another aspect of this disclosure, the applicator tool includes a mesh feature located upstream of the first screen at the outlet of at least one pump.

[0228] According to another aspect of this disclosure, the applicator tool includes an auxiliary power supply operatively coupled to at least one pump and a user interface. A charging assembly is operatively coupled to the auxiliary power supply.

[0229] According to another aspect of this disclosure, a cleaning device includes a supply tank configured to store a foaming cleaning chemical. At least one pump is in fluid communication with the supply tank and configured to generate foam from the foaming cleaning chemical. A dispenser is operatively coupled to the at least one pump for dispensing the foam. A conduit provides fluid communication between the at least one pump and the dispenser. A user interface controls the dispensing of the foam through the dispenser. The dispenser includes a frame defining a chamber having an inlet and an outlet in fluid communication with the conduit. At least one mesh screen is operatively coupled to the conduit to generate bubbles in the foam. An extrusion manifold defines at least one opening in fluid communication with the outlet of the chamber for extruding the foam onto a surface to be cleaned in response to interaction with the user interface. Spacer protrusions extend from the frame in a direction parallel to the direction of movement of the foam through the chamber to define the height of the foam band.

[0230] According to another aspect of this disclosure, the at least one pump includes a first pump that drives foaming cleaning chemicals through a conduit and a second pump that drives air through the conduit.

[0231] According to another aspect of this disclosure, the conduit includes a first conduit portion connected to a first pump, a second conduit portion connected to a second pump, and a third conduit portion fluidly connected to the first and second conduit portions. Foaming cleaning chemicals and air are mixed in the third conduit portion.

[0232] According to another aspect of this disclosure, a recovery tank is in fluid communication with a suction source and is configured to recover foam. At least one suction nozzle is in communication with the suction source and is configured to draw the foam into the recovery tank.

[0233] According to another aspect of this disclosure, at least one suction nozzle includes: a first suction nozzle disposed adjacent to a first side of an extrusion manifold; and a second suction nozzle adjacent to a second side of the extrusion manifold opposite to the first side of the extrusion manifold.

[0234] According to another aspect of this disclosure, a first suction nozzle defines a first inlet extending substantially parallel to the extrusion manifold on a first side of the extrusion manifold, and a second suction nozzle defines a second inlet extending substantially parallel to the extrusion manifold on a second side of the extrusion manifold.

[0235] According to another aspect of this disclosure, the user interface controls suction at each of the first and second inlets.

[0236] According to another aspect of this disclosure, the user interface is configured to selectively initiate suction only at a first inlet, initiate suction only at a second inlet, initiate suction at each of the first and second inlets simultaneously, and simultaneously deactivate suction at each of the first and second inlets.

[0237] According to another aspect of this disclosure, the flow rate of the foaming cleaning chemical in the first pump is between 25 mL / min and 75 mL / min, and the flow rate of the air in the second pump is between 1 L / min and 5 L / min.

[0238] According to another aspect of this disclosure, at least one pump includes a combined foam pump having an air inlet port for driving both foaming cleaning chemicals and air through a conduit to a dispenser.

[0239] According to another aspect of this disclosure, the user interface includes a flow control operatively coupled to at least one pump and configured to control the density of the foam.

[0240] According to another aspect of this disclosure, the density of the foam is in the range of 10 g / mL to 150 g / mL.

[0241] According to another aspect of this disclosure, an accessory hose extends from the base housing and has a rod, to which an applicator tool is selectively coupled. The applicator tool includes a dispenser.

[0242] According to another aspect of this disclosure, an accessory hose extends from the base housing and has a rod, to which an applicator tool is selectively coupled. The applicator tool includes a dispenser and at least one pump.

[0243] According to another aspect of this disclosure, the applicator tool includes at least one pump.

[0244] According to another aspect of this disclosure, the applicator tool includes a support feature and a supply canister coupled to the support feature.

[0245] According to another aspect of this disclosure, the rod includes a fluid outlet. The applicator tool includes an outlet housing that receives the fluid outlet and is configured to dispense cleaning fluid through an opening in the outlet housing.

[0246] According to another aspect of this disclosure, the applicator tool includes a power source operatively coupled to at least one pump.

[0247] According to another aspect of this disclosure, the supply tank and at least one pump are operatively connected to the base housing.

[0248] According to another aspect of this disclosure, the supply tank defines a through-hole, and an umbrella-shaped valve extends through the through-hole.

[0249] According to another aspect of this disclosure, a cleaning device includes a suction source. A recovery tank is in fluid communication with the suction source. A supply tank is configured to store a cleaning fluid. At least one pump is in fluid communication with the supply tank and configured to generate foam from the cleaning fluid. An applicator tool is operatively coupled to the at least one pump. The applicator tool includes a chamber defining an inlet and an outlet in fluid communication with the at least one pump. A first screen is disposed within the chamber. A second screen is disposed within the chamber and downstream of the first screen. A spacer is disposed between the first screen and the second screen. An extrusion manifold is in fluid communication with the outlet of the chamber and includes at least one opening through which the foam is dispensed. A first suction nozzle is disposed on a first side near the outlet of the chamber and defines a first inlet. A second suction nozzle is disposed on a second side near the outlet of the chamber and defines a second inlet. The first and second inlets are in fluid communication with the suction source for capturing the foam in the recovery tank and are in communication with a user interface body that controls the application of the foam through the applicator tool and the fluid recovery path generated by the suction source.

[0250] According to another aspect of this disclosure, the user interface includes a flow deflector operable between multiple locations to selectively initiate suction only at a first inlet, to initiate suction only at a second inlet, and to initiate suction simultaneously at each of the first and second inlets.

[0251] According to another aspect of this disclosure, the user interface includes a suction activation slider operable between an open position that allows fluid communication between a suction source and a first suction nozzle and a second suction nozzle, and a closed position that at least partially prevents the fluid communication between the suction source and the first and second suction nozzles.

[0252] According to another aspect of this disclosure, an applicator tool includes a frame that at least partially defines a chamber. The frame includes spaced protrusions extending from the frame in a direction parallel to the direction of movement of the foam at the opening. The spaced protrusions define the height of the foam band.

[0253] According to another aspect of this disclosure, at least one pump and supply tank are disposed within the applicator tool.

[0254] According to another aspect of this disclosure, the applicator tool includes a conduit in fluid communication with an inlet to at least one pump and a chamber. The at least one pump includes a first pump for driving cleaning fluid through the conduit and a second pump for driving air through the conduit.

[0255] According to another aspect of this disclosure, the user interface includes a flow control configured to adjust the power supplied to at least one of the first pump and the second pump to change the flow rate of at least one of the first pump and the second pump and to change the density of the foam.

[0256] According to another aspect of this disclosure, the user interface includes a flow control configured as a needle valve operatively coupled to at least one pump to control the flow rate of at least one of a cleaning fluid and air to change the density of the foam.

[0257] According to another aspect of this disclosure, an applicator tool for a cleaning device includes a suction source for generating a suction effect, wherein the applicator tool includes a supply tank configured to store a cleaning fluid. At least one pump is in fluid communication with the supply tank and configured to generate foam from the cleaning fluid. A dispenser is in fluid communication with the at least one pump via a conduit. At least one screen is included. The dispenser includes a chamber defining an inlet and an outlet in fluid communication with the conduit. A fluid outlet is in fluid communication with the outlet of the chamber and defines at least one opening through which the foam is dispensed. At least one suction nozzle is disposed adjacent to the outlet of the chamber. A user interface is configured to selectively initiate suction through the at least one suction nozzle and control the dispensing of the foam through the dispenser.

[0258] According to another aspect of this disclosure, at least one suction nozzle includes a first suction nozzle and a second suction nozzle, the first suction nozzle including a first inlet disposed on a first side of the outlet of the chamber, and the second suction nozzle including a second inlet disposed on a second side of the outlet of the chamber, the second side being opposite to the first side.

[0259] According to another aspect of this disclosure, the user interface is configured to selectively initiate suction only at the first inlet, only at the second inlet, and simultaneously initiate suction at each of the first and second inlets.

[0260] According to another aspect of this disclosure, at least one screen includes a first screen and a second screen disposed downstream of the first screen.

[0261] According to another aspect of this disclosure, a first screen has a first porosity, and a second screen has a second porosity. The second porosity is greater than the first porosity.

[0262] According to another aspect of this disclosure, the second porosity is in the range of 120 pores per square inch to 400 pores per square inch.

[0263] According to another aspect of this disclosure, a foam delivery and recovery system includes a suction source configured to generate a vacuum effect. A recovery tank is in fluid communication with the suction source for containing material captured by the suction source. At least one supply tank contains a cleaning fluid. A pump assembly is operatively coupled to the supply tank and configured to generate foam from the cleaning fluid. At least one screen is configured to generate the foam. An applicator tool includes a suction nozzle in fluid communication with the suction source. A dispenser is in fluid communication with the pump assembly via a conduit. The dispenser defines a chamber having an inlet and an outlet. An extrusion manifold is in fluid communication with the outlet. The extrusion manifold defines at least one opening through which the foam is dispensed. A user interface is operatively coupled to the pump assembly for controlling the dispensing of the foam through the applicator tool.

[0264] According to another aspect of this disclosure, the applicator tool includes a cap that defines an inlet to a chamber. The cap includes an inlet guide for dispersing at least one of a cleaning fluid and foam across the width of the chamber.

[0265] According to another aspect of this disclosure, the applicator tool includes a support feature for supporting a pump assembly, a user interface, and at least one supply tank, a charging component, and a power source operatively coupled to the pump assembly, the user interface, and the charging component. The user interface includes a power indicator.

[0266] According to another aspect of this disclosure, an applicator tool includes: a support feature; a supply tank coupled to the support feature and configured to store a foaming cleaning chemical; and a foam pump in fluid communication with the supply tank and configured to generate foam from the foaming cleaning chemical. A dispenser is operatively coupled to the foam pump for dispensing the foam. A conduit provides fluid communication between the foam pump and the dispenser. A user interface controls the dispensing of the foam through the dispenser. The dispenser includes a frame defining a chamber having an inlet and an outlet in fluid communication with the conduit; at least one mesh screen operatively coupled to the conduit to generate bubbles in the foam; an extrusion manifold defining at least one opening in fluid communication with the outlet of the chamber for extruding the foam onto a surface to be cleaned in response to interaction with the user interface; and spacer protrusions extending from the frame in a direction parallel to the direction of movement of the foam through the chamber to define the height of the foam band.

[0267] According to another aspect of this disclosure, the foam pump is disposed inside the support feature.

[0268] According to another aspect of this disclosure, the frame is included inside the supporting feature.

[0269] According to another aspect of this disclosure, the frame adjacent to the dispenser is provided with a suction nozzle.

[0270] According to another aspect of this disclosure, the user interface includes an activation button and an activation switch. The activation switch is configured to activate the foam pump when the activation button is engaged with the activation switch.

[0271] According to another aspect of this disclosure, the power source is supported within the support feature.

[0272] According to another aspect of this disclosure, the dispenser includes a cover extending above a chamber. The cover defines an inlet to the chamber and an inlet guide to disperse fluid across the width of the chamber.

[0273] According to another aspect of this disclosure, a foam pump is included in a pump assembly, and the pump assembly includes a pump inlet, an air inlet, and a pump outlet. A mesh feature is disposed at the pump outlet in the foam distribution path.

[0274] According to another aspect of this disclosure, the supply tank includes a through-hole and umbrella-shaped valves extending through the through-hole respectively.

[0275] According to another aspect of this disclosure, the umbrella valve extends in the opposite direction.

[0276] According to another aspect of this disclosure, a spray shroud is coupled to a support member. The spray shroud is configured to extend above an outlet in fluid communication with a liquid delivery system.

[0277] According to another aspect of this disclosure, the support feature includes a tubular section and a distal end extending from the tubular section at an obtuse angle. A supply tank is connected to the distal end via a connector and positioned below the tubular section.

[0278] According to another aspect of this disclosure, an activation button is operatively coupled to a support feature and disposed between the tubular section of the support feature and the supply tank.

[0279] Those skilled in the art will understand that the construction of the described disclosure and other components is not limited to any particular material. Unless otherwise described herein, other exemplary embodiments of this disclosure may be formed from a wide variety of materials.

[0280] For the purposes of this disclosure, the term "connection" (in all its forms, link, linked, connected, etc.) generally means a direct or indirect connection between two components (electrical or mechanical). Such a connection may be fixed in nature or movable in nature. Such a connection may be achieved using two components (electrical or mechanical), and any additional intermediate component may form a single unit with or between the two components. Unless otherwise specified, such a connection may be permanent in nature or removable or detachable in nature.

[0281] It is equally important to note that the construction and arrangement of the elements of this disclosure, as shown in the exemplary embodiments, are merely illustrative. Although only a few embodiments of the invention have been described in detail in this disclosure, those skilled in the art will readily appreciate that many modifications are possible (e.g., variations in the size, dimensions, structure, shape and proportions, parameter values, mounting arrangements, use of materials, color, orientation, etc.) of the various elements without substantially departing from the novel teachings and advantages of the subject matter. For example, an element shown as integrally formed may be composed of multiple parts, or elements shown as multiple parts may be integrally formed; the operation of interfaces may be reversed or otherwise varied; the structure and / or the length or width of components or connectors or other elements of the system may vary; and the nature or number of adjustment positions provided between elements may vary. It should be noted that the elements and / or components of the system may be constructed from any of a wide variety of materials providing sufficient strength or durability, and from any of a wide variety of colors, textures, and combinations. Therefore, all such modifications are intended to be included within the scope of this invention. Other substitutions, modifications, alterations, and omissions may be made in the design, operating conditions, and arrangements of the desired and other exemplary embodiments without departing from the spirit of the invention.

[0282] It should be understood that any described process or step within a described process may be combined with other disclosed processes or steps to form a structure within the scope of this disclosure. The exemplary structures and processes disclosed herein are for illustrative purposes and should not be construed as limiting.

Claims

1. A cleaning device comprising: A supply tank configured to store cleaning fluid; At least one pump in fluid communication with the supply tank, wherein the at least one pump is configured to generate foam from the cleaning fluid and guide the cleaning fluid along a foam distribution path; An applicator tool operatively coupled to the at least one pump, the applicator tool defining a portion of the foam dispensing path for dispensing the foam; as well as A user interface that controls the dispensing of the foam via the applicator tool, wherein the applicator tool includes: A chamber having an inlet and an outlet that are fluidly connected to the at least one pump; A first screen is disposed within the cavity; A second screen is disposed within the chamber and downstream of the first screen; A spacer, the spacer being disposed between the first screen and the second screen; and An extrusion manifold, fluidly connected to the outlet of the chamber, the extrusion manifold defining at least one opening through which the foam is dispensed in response to interaction with the user interface.

2. The cleaning device of claim 1, wherein the spacer defines a plurality of orifices, and wherein the at least one opening of the extrusion manifold includes a plurality of openings, and further wherein the plurality of orifices are offset relative to the plurality of openings in the direction of movement of the foam along the foam dispensing path through the chamber.

3. The cleaning apparatus of claim 2, wherein the applicator tool includes an end frame that at least partially defines the chamber, and wherein the end frame includes a spacer protrusion extending in a direction parallel to the direction of movement of the foam at the outlet, and further wherein the spacer protrusion is configured to engage the surface to be cleaned to space the extrusion manifold from the surface to be cleaned, thereby defining a foam band of a certain height above the surface to be cleaned.

4. The cleaning device according to any one of claims 1 to 3, further comprising: Suction source; as well as A recovery tank, operatively coupled to the suction source and configured to recover the foam, wherein the applicator tool defines at least one suction nozzle in fluid communication with the suction source and is configured to draw the foam into the recovery tank.

5. The cleaning device according to any one of claims 1 to 4, wherein the applicator tool is configured to dispense the foam at a rate between 40 mL / min and 60 mL / min.

6. The cleaning device according to any one of claims 1 to 5, wherein the density of the dispensed foam is between 10 g / L and 150 g / L.

7. The cleaning device according to any one of claims 1 to 6, wherein the first screen and the second screen each define 120 holes per square inch to 400 holes per square inch.

8. The cleaning device according to any one of claims 1 to 7, wherein the applicator tool comprises: Supporting features; as well as A front lens, selectively coupled to the distal end of the support feature, wherein the support feature and the front lens form a suction channel.

9. The cleaning device according to any one of claims 1 to 8, wherein the applicator tool includes a mesh feature located upstream of the first screen at the outlet of the at least one pump.

10. The cleaning device according to any one of claims 1 to 9, wherein the applicator tool comprises: An auxiliary power supply, operatively connected to the at least one pump and the user interface; as well as A charging component, which is operatively connected to the auxiliary power supply.

11. A cleaning device comprising: A supply tank configured to store foaming cleaning chemicals; At least one pump, the at least one pump being in fluid communication with the supply tank and configured to generate foam from the foaming cleaning chemical; A dispenser, operatively coupled to the at least one pump for dispensing the foam; A conduit that provides fluid communication between the at least one pump and the distributor; as well as User interface, the user interface controlling the distribution of the foam through a dispenser, wherein the dispenser includes: A frame defining a chamber having an inlet and an outlet in fluid communication with the catheter; At least one screen, the at least one screen being operatively coupled to the conduit to generate bubbles in the foam; An extrusion manifold defining at least one opening in fluid communication with the outlet of the chamber for extruding the foam onto the surface being cleaned in response to interaction with the user interface; and Spacer protrusions extend from the frame in a direction parallel to the direction of movement of the foam through the chamber to define the height of the foam band.

12. The cleaning device according to claim 11, further comprising: Suction source; A recovery tank, which is in fluid communication with the suction source and is configured to recover the foam; as well as At least one suction nozzle, the at least one suction nozzle being in communication with the suction source and configured to draw the foam into the recycling tank.

13. The cleaning device according to any one of claims 11 or 12, wherein the at least one pump comprises a combined foam pump having an air inlet port for driving both the foaming cleaning chemical and air through the conduit to the dispenser.

14. The cleaning device according to any one of claims 11 to 13, further comprising: Base shell; An accessory hose, which extends from the base housing and has a rod; as well as An applicator tool, selectively coupled to the rod, wherein the applicator tool includes the dispenser and the at least one pump.

15. The cleaning device according to any one of claims 11 to 14, wherein the applicator tool includes a support feature, and wherein the supply can is coupled to the support feature.

16. The cleaning device according to any one of claims 11 to 15, wherein the supply tank defines a through-hole, and wherein an umbrella-shaped valve extends through the through-hole.

17. The cleaning apparatus according to any one of claims 11 to 16, wherein the applicator tool includes a power source operatively coupled to the at least one pump.

18. A foam conveying and recycling system, comprising: A suction source, the suction source being configured to generate a vacuum effect; A recovery tank, which is in fluid communication with the suction source for containing material captured by the suction source; At least one supply tank for containing cleaning fluid; A pump assembly operatively coupled to the supply tank and configured to generate foam from the cleaning fluid; At least one screen, the at least one screen being configured to generate the foam; The applicator tool includes: A suction nozzle, which is in fluid communication with the suction source; A distributor, which is in fluid communication with the pump assembly via a conduit, defines a chamber having an inlet and an outlet; and An extrusion manifold, fluidly connected to the outlet, defining at least one opening through which the foam is dispensed; and A user interface operatively coupled to the pump assembly for controlling the dispensing of the foam through the applicator tool.

19. The foam delivery and recovery system of claim 18, wherein the applicator tool comprises: A cover defining the entrance to the chamber, wherein the cover includes an entrance guide for dispersing at least one of the cleaning fluid and the foam across the width of the chamber.

20. The foam delivery and recovery system according to any one of claims 18 or 19, wherein the applicator tool comprises: Support features for supporting the pump assembly, the user interface, and the at least one supply tank; Charging components; as well as A power source, operatively connected to the pump assembly, the user interface, and the charging assembly, wherein the user interface includes a power indicator.

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