Spraying rod

Abstract

A spray wand for use with a chemical or chemical formulation in solid form. The spray wand has a spray wand body having a hollow tube with an angled wand spray end, a spray end selector attached to the angled wand spray end, a wand hose end screen inserted or otherwise attached to the hollow tube of the spray wand body, and a spray wand hose end connected to the spray wand body. The wand hose end has a wand hose end valve for controlling water flow from the hose. A refill cartridge having a swirl chamber may be attached to the hollow tube. The refill cartridge has an external channel or groove on its outer surface as a water flush feature of the spray wand.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This application is a divisional application of Chinese invention patent application No. 202080097232.7, whose invention title is "Spray Rod", which entered the Chinese national stage on August 19, 2022. This application claims priority to U.S. Provisional Patent Application Serial No. 62 / 951,376 filed in the U.S. Patent and Trademark Office on December 20, 2019, U.S. Provisional Patent Application Serial No. 63 / 108,597 filed on November 2, 2020, and U.S. Patent Application No. 17 / 124,186 filed on December 16, 2020. The entire disclosures of which are incorporated herein by reference. Technical Field

[0002] The present invention relates to a spray wand, and more particularly to a spray wand for use with chemicals or chemical formulations in solid form. Background Art

[0003] Outdoor cleaning requires the application of large amounts of cleaning agents over large surface areas such as house siding, roofs, decks, patios, and cars. The industry standard solution to address this type of cleaning activity is a liquid-based hose-end product. These products typically contain a bottom reservoir in which a concentrated liquid chemical solution is stored. When the hose is attached to the nozzle of the device and water passes through the hose, the final cleaning solution is produced. The liquid concentrate is drawn up by a dip tube and mixed with water passing through the nozzle of the device. The diluted chemical is then dispensed onto the surface to be cleaned.

[0004] Some of the issues with standard hose-end fixtures are that they tend to be very heavy, bulky, and not ergonomic to use. Due to the location where the hose hooks into the fixture, the range of motion when cleaning is greatly impeded, and the added weight of the liquid concentrate often requires the user to use both hands when operating the fixture. Additionally, water flow restrictors are often used to ensure that the correct dilution ratio is met. The use of these water flow restrictors can significantly reduce the overall reach of the diluted spray.

[0005] Therefore, there is a need for a hose-end product that is lighter and designed for an optimal ergonomic outdoor cleaning experience. Summary of the invention

[0006] The spray wand device of the present invention solves the above-mentioned problems, including providing a device that is ergonomically superior to hose end products currently on the market and can be easily held with one hand when operating. The spray wand device of the present invention can consistently dilute concentrated solid chemicals to deliver an output cleaning solution that contains a pesticide active agent to kill microorganisms and is registered with the EPA.

[0007] The apparatus of the present invention can be used to achieve proper dilution of solid chemicals to produce an optimal cleaning solution. Ensuring consistent and accurate dilution of solid chemicals into water is not only important for product longevity in cleaning large outdoor surface areas, but is even more important when ensuring the correct dosage of the pesticide active (i.e., calcium hypochlorite) when killing microorganisms such as mold. Products that deliver pesticide actives must pass GLP (Good Laboratory Practice) testing and be registered with the EPA (Environmental Protection Agency). Such GLP testing requires that a specific range of pesticide active concentrations be defined and tested for the killing of target microorganisms to ensure the efficacy of the final cleaning solution. The apparatus that delivers the final cleaning solution needs to consistently deliver the pesticide active at the appropriate dilution ratio to ensure that it is the same chemical composition tested in the GLP testing to meet EPA requirements.

[0008] The present invention also allows water to pass through solid chemicals in such a manner that the output stream from the device has a greater spray reach than current hose-end products on the market.

[0009] The device of the present invention allows for the hose to be connected in such a way that the hose does not impede the range of motion when cleaning, and the weight of the device is light enough that the device can be easily held with only one hand when operating. To achieve the lighter weight, the device operates using solid component chemicals. This allows for lighter weight to be used in the device because solid component chemicals are more concentrated than their liquid counterparts.

[0010] In one embodiment of the present invention, the spray wand includes a spray wand body having a hollow tube with an angled wand spray end, an optional spray end selector attached to the angled wand spray end, a wand hose end screen inserted into or otherwise attached to the hollow tube of the spray wand body, and a wand hose end connected to the spray wand body. The wand hose end may have a wand hose end valve for controlling water flow from the hose.

[0011] In an embodiment of the present invention, the spray wand includes a spray wand body having a hollow tube with an angled wand spray end, an optional spray end selector attached to the angled wand spray end, a cartridge for attaching to the hollow tube, and a wand hose end connected to the spray wand body having the cartridge. The wand hose end may have a wand hose end valve for controlling water flow from the hose.

[0012] In an embodiment of the present invention, the spray wand incorporates a housing or cartridge housing in which the solid chemical is stored and is not in direct contact with the end user. The separate housing minimizes the overall exposure risk to the consumer.

[0013] In an embodiment of the invention, the cartridge comprises a swirl chamber.

[0014] Further areas of applicability of the present invention will become apparent from the detailed description provided hereinafter.It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the present invention, are intended for illustration purposes only and are not intended to limit the scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The invention will be described in detail and more fully understood from the accompanying drawings, which are not necessarily to scale, in which: Figure 1 is an isometric view of a spray wand with a refill cartridge assembly according to the present invention.

[0016] Figure 2 Is has Figure 1 Side view of the spray wand of the refill cartridge assembly.

[0017] Figure 3 is a cross-sectional view of a spray wand with a refill cartridge assembly.

[0018] Figure 4 The refill cartridge assembly is shown.

[0019] Figure 5 is a cross-sectional view of a refill cartridge assembly.

[0020] Figure 6 is a close-up view of the spray nozzle.

[0021] Figure 7 is an isometric view of a spray nozzle.

[0022] Figure 8 is a cross-sectional view of a spray nozzle.

[0023] Fig. 9 is a cross-sectional isometric view of a spray nozzle.

[0024] Fig.10 is an inside view of a spray nozzle.

[0025] Fig.11 is an end view of the spray body.

[0026] Fig.12 Shown are the hose and refill connector.

[0027] Fig.13 is a cross-sectional view of the hose and refill connector.

[0028] Fig.14 A vortex chamber is shown.

[0029] Fig.15A -E shows various views of the vortex chamber.

[0030] Fig.16A -D shows various views of the inclined vortex chamber.

[0031] Fig.17 is an exploded view of a spray wand with a refill cartridge.

[0032] Fig.18 is a side view of a spray wand with integrated screen and swirl chamber.

[0033] Fig.19 is a cross-sectional side view of a spray bar with integrated screen and swirl chamber.

[0034] Fig. 20 is a cross-sectional isometric view of a spray bar with a swirl chamber.

[0035] Fig.21 is a cross-sectional view of the spray body.

[0036] Fig. 22 is a side view of a disposable spray wand.

[0037] Fig.23 yes Fig. 22 Cross-sectional side view of a disposable spray wand.

[0038] Fig.24 The spray orifice is shown.

[0039] Fig.25 is a close up view of the integrated cut off / hose end.

[0040] Fig.26 A spray wand with a car wash nozzle is shown.

[0041] Fig. 27 is a view of a car wash spray nozzle.

[0042] Fig.28 is a side view of a car wash spray nozzle.

[0043] Fig.29 Shown is a spray wand with a rinse option.

[0044] Fig.30 Is a flush-vortex mode Fig.29 Cross-sectional view of the spray bar.

[0045] Fig.31 yes Fig.29 Cross-sectional view of the spray wand with the rinse-swirl pattern and the hose cut-off end suppressed.

[0046] Fig.32 It has a flush-flush mode Fig.29 Cross-sectional view of the spray bar.

[0047] Fig.33 yes Fig.29Cross-sectional view of the spray wand with flush-flush mode - hose cut-off end suppressed.

[0048] Fig.34 Show Fig.29 Flush stop valve.

[0049] Fig.35 is an external view of the cut off / hose end.

[0050] Fig.36A , 36B and 36C are isometric views of a refill cartridge assembly with an external flush passage.

[0051] Fig.37 yes Fig.36A , 36B and an interior view of the refill cartridge assembly of the 36C.

[0052] Fig.38 yes Fig.36A , 36B and an axial view of the refill cartridge assembly of 36C.

[0053] Fig.39 is an exterior view of a handle and valve in a cleaning position of a spray wand with a refill cartridge having external access according to an embodiment of the present invention.

[0054] Fig.40 is a cross-sectional interior view of a handle and valve in a cleaning position of a spray wand with a refill cartridge having an external passageway according to an embodiment of the present invention.

[0055] Fig.41 is an exterior view of a handle and valve in a flush position of a spray wand with a refill cartridge having an external passageway according to an embodiment of the present invention.

[0056] Fig.42 is a cross-sectional interior view of a handle and valve in a flush position of a spray wand with a refill cartridge having an external passageway according to an embodiment of the present invention.

[0057] Fig.43 is a perspective view of multiple and stackable refill cartridge options without the refill cartridges attached.

[0058] Fig.44 is a perspective view of a multiple and stackable refill cartridge option with a refill cartridge attached.

[0059] Fig.45 An insertion / refill cartridge adapter is shown.

[0060] Fig.46 The hose wand handle is shown with the insertion / refill cartridge adapter received by the hose wand handle.

[0061] Fig.47 A refill cartridge is shown insertable into an insertion / refill cartridge adapter.

[0062] Fig.48 A hose wand sprayer assembly is shown showing the insertion / refill cartridge adapter installed and the relationship of the various components to each other. DETAILED DESCRIPTION

[0063] The following description of the embodiments of the present invention is merely exemplary in nature and is in no way intended to limit the present invention, its application or use. The following description is provided herein only as an example, with the purpose of providing an enabling disclosure of the present invention, but not limiting the scope or essence of the present invention.

[0064] In an embodiment of the present invention, a spray rod 100 is provided. The spray rod 100 includes a spray nozzle 10, a non-disposable spray body 12 shown in a tubular shape, and a replaceable refill cartridge assembly 14 inside the spray body 12. Referring to the accompanying drawings, Figure 1 1 is an isometric view of a spray wand 100 according to the present invention. The spray wand 100 includes a non-disposable spray body 12 and a replaceable refill cartridge assembly 14 having a refill cartridge containing chemicals or chemical formulations (also referred to herein as solid chemicals) in solid form. At the cut-off end or hose end 16 of the spray wand 100, the user connects a garden hose with a rotating or swinging hose nut to the hose nut 18 of the hose end 16. The user can use a shut-off valve 20 to open and close the fluid flow. The shut-off valve 20 is located on the handle 22 of the spray wand 100, for example, it allows the user to turn off the water at the handle 22 during use and remove the spray body to replace the solid chemical or cartridge.

[0065] The water passes through the refill cartridge assembly 14 in a tangential vortex, which tumbles or flows through the solid chemical, maximizing exposure to the solid chemical, resulting in a higher concentration of applied chemical. The chemical fluid mixture is dispensed at the distal nozzle 10. The user can rotate the nozzle 10 to select the desired spray setting. Although two settings are shown, additional spray settings may exist and are within the scope of the present invention. The nozzle 10 preferably has one or more stop positions, more preferably four stop positions.

[0066] Figure 2 yes Figure 1 A side view of the spray bar 100. Figure 2 , an optional molded in grip feature 24 is shown on the spray body 12. By having the grip 24 on the spray body 12 as opposed to further down past the cut-off end 16, the torque on the user's arm is minimized, thereby reducing user fatigue. Figure 2The spray wand 100 is shown to include a spray body 12. The spray body 12 consists of a preferably transparent hollow tube with an angled wand spray end 26 attached to a spray tip selector or nozzle 10. Figure 2 Also shown is a shut-off valve 20 for controlling the flow of water from the hose and a hose nut 18 for connection to the hose. The spray wand 100 is particularly suitable for cleaning outdoor hard surfaces.

[0067] The spray body in the form of a hollow tube is configured to receive a refill cartridge assembly 14, which has a refill cartridge containing solid chemicals. The hollow tube and / or the refill cartridge may have an indicator or mark to remind the user when the solid chemicals should be replaced to reach the desired concentration level. Solid chemicals are preferably used for purposes such as cleaning, mold removal or mildew removal. Examples of solid chemical forms include, but are not limited to, pills, tablets, or some other forms of solid chemicals. One of the benefits of solid chemicals is that solid chemicals last longer during use, making the spray rod lighter for end users, because solid activity, there is no water volume or weight for transportation, and the visibility of solid chemicals can be observed during use and know when to replace. The spray rod 100 of the present invention preferably includes chemicals or chemical preparations in solid form, such as solid chlorine bleach. Non-limiting examples of chemicals or chemical preparations include, but are not limited to washing soda, baking soda, solid surfactants, calcium hypochlorite, sodium hypochlorite, citric acid, sodium sulfate, urea, quaternary amines, herbicides, insecticides, pesticides, fertilizers, and combinations thereof. Preferably, the chemical is or the chemical formulation comprises calcium hypochlorite. Calcium hypochlorite contains over 70% active available chlorine and has a long shelf life when properly stored.

[0068] Due to the geometry of the spray bar 100, the water passes directly through the solid chemical and out of the spray bar's nozzle. The spray bar of the present invention produces a higher water pressure and therefore a greater reach of the spray out of the spray bar.

[0069] The spray wand 100 of the present invention is versatile in range of motion and is lighter in weight. Since the spray wand can be used with one hand and the hose is connected to the handle of the spray wand, the spray wand can be easily adjusted to clean a car or under a deck or other hard to reach places. The spray wand can be used with one hand, making it easier for the user to raise his / her arm to reach a greater reach, unlike products that require two hands to use.

[0070] Figure 3 is a cross-sectional view of a spray wand 100 having a refill cartridge assembly 14. Figure 3As shown in FIG, the external threads on the refill cartridge are screwed into the internal threads 32 of the handle at the cut-off end of the spray wand. Once the refill cartridge is secured, the user screws the refill cartridge / cut-off assembly into the threads 34 of the spray body. At this point, the user rotates the shut-off valve 20 from the closed position to the open position and dispenses the product.

[0071] Figure 4 The refill cartridge assembly 14 is shown. The refill cartridge assembly includes a tubular refill cartridge 40, preferably transparent, and a vortex chamber 42 that snaps onto or otherwise attaches or secures to the proximal end of the tubular refill cartridge 40. The refill cartridge 40 is hollow, but will be filled to contain solid chemicals. Preferably, the tubular refill cartridge 40 is pre-filled with solid chemicals. Water enters the proximal end, flows through the vortex chamber 42, tumbles or flows tangentially through the solid chemicals present, and exits through an orifice 44 on the distal end of the refill cartridge 40.

[0072] Figure 5 is a cross-sectional view of the refill cartridge assembly 14 . Figure 5 How the vortex chamber 42 is positioned within the refill cartridge is shown. The vortex chamber 42 is inserted or pushed into the refill cartridge 40 until the vortex chamber 42 bottoms out on the shoulder 46 of the refill cartridge 40. A prong or tab 48 extending as part of the vortex chamber 42 provides a one-way snap feature to engage with the refill cartridge 40 to prevent removal. It is also contemplated that the vortex chamber can be connected to the refill cartridge using a threaded connection, such as with a child-resistant ratchet feature. The vortex chamber can also be attached to the refill cartridge by chemical bonding or welding.

[0073] The spray wand 100 generates turbulence and / or a cyclonic effect by using the vortex chamber 42 to generate water flow within the tubular body and redirect the water flow onto the solid chemical so that the solid chemical is not diluted too quickly and the chemical concentration required for effectiveness is achieved. The replacement refill cartridge is used to meter the water flow to achieve the proper dilution of the solid chemical. This is important for certain chemical products, such as products used to kill mold.

[0074] The advantage of using a transparent refill cartridge to the user is that visibility allows the user to see the solid chemical dissolving and also know when to replace the solid chemical and / or refill cartridge. The refill cartridge has a small enough hole in the top to prevent water beads from clogging the outlet orifice, but water still moves through the outlet orifice uninterrupted. Another benefit is that the user does not need to come into contact with the solid chemical, which may be toxic or in concentrated solid form. The screw-on / threaded connection of the refill cartridge assembly to the spray wand handle allows water to pass through the refill cartridge to properly dilute the solid chemical.

[0075] Figure 6is a close-up view of the spray nozzle 10. The spray nozzle 10 preferably has at least two user-selected settings, "stream" or "spray". The "stream" setting has a stream orifice 50. The "spray" setting has a spray orifice 52 in the spray nozzle 10. The user can rotate the nozzle to make the spray selection. It is contemplated that more than two settings are possible, which may include, for example, a fan spray setting. Figure 6 In FIG. 1 , one or more stops 54 are shown as features that alert the user and hold the spray nozzle in place. Figure 7 is an isometric view of the spray nozzle 10 . Figure 8 is a cross-sectional view of the spray nozzle 10 . Figure 8 FIG. 1 shows how the stopper 54 of the spray nozzle 10 engages with one or more stopper recesses 60 ( Fig.11 ) cooperate with each other to hold the spray nozzle in a rotated position when in use.

[0076] Fig. 9 is a cross-sectional isometric view of the spray nozzle 10 . Fig. 9 Another perspective view of the parts fitting together is provided. As the user rotates the spray nozzle 10, the spray nozzle stops 54 flex and snap into the next set of stopper pockets 60.

[0077] Fig.10 Shown is a molded in stop 54. The stop 54 in the spray nozzle can be bent in and out to allow the rotational movement desired by the user.

[0078] Fig.11 A matching spray body stopper recess 60 is shown that cooperates with the spray nozzle stopper 54. The number of possible positions of the spray nozzle can vary. For example, Fig.11 Four positions are shown for the spray nozzle. The user can select a spray mode. When in the selected spray mode, the molded spray nozzle stop 54 falls into the stopper recess 60 in the spray body 12 and is held in place by it. It is contemplated that there may be more than two settings, which may include a fan spray setting. Fig.11 Also shown is a recess 58 where an O-ring will be located.

[0079] Fig.12 Shown are the hose end and refill connector. Fig.12 A close-up view showing the threaded attachment 62 between the shut-off valve 20 and the spray body is shown. Fig.12 Also shown is an O-ring 64 which provides a fluid seal between the spray body and the shut-off valve.

[0080] Fig.13 is a cross-sectional view of the connection between the hose end and the refill cartridge. Fig.13 The shut-off valve 20 is shown rotated to a closed position. Fig.13Also shown is the hose nut 18 attached to the hose nut retainer 66 .

[0081] Fig.14 Vortex chamber 42 is shown. Vortex chamber 42 with front side 44 and rear side 46 produces fluid tumbling in refill cylinder. In the case of no vortex and tumbling of water, water will directly pass through the refill cylinder and cause lower chemical concentration. Water enters rear side 46 of vortex chamber 42 in a linear manner. Vortex chamber causes direction change and fluid is discharged in a tangential manner. Possible vortex chamber configurations may include one or more tangential channels 48, preferably two or more tangential channels 48. Channel 48 may have various geometric shapes, such as rectangular or spiral. Providing spacing between channels causes greater tangential force, however, it may or may not cause greater concentration. Vortex chamber has one or more raised protrusions 50 with fluid outlet window 52, ​​and the fluid outlet window may be rectangular, square, circular or other shapes. As shown, rectangle is shown. Vortex chamber may have various configurations. The considerations for selecting configurations include, but are not limited to, the applicability of injection molding process and the cross-sectional flow area that does not limit fluid flow. Fig.15A -E shows various views of the vortex chamber, including showing the passage 48 .

[0082] During use, water passes through the vortex chamber and creates a vortex or eddy. The vortex chamber helps prevent the chemical from being released too quickly or thinning out too quickly. It is used to mix the water and the chemical being dissolved, preferably in an even ratio.

[0083] As described above, the vortex chamber 42 can have alternative configurations and still be within the scope of the present invention, as long as the configuration creates a vortex or eddy of water as the water passes through the vortex chamber. For example, water enters in the form of a stream and creates several streams in one direction to create a vortex or cyclone effect.

[0084] Alternative configurations of the vortex chamber are possible within the scope of the invention. For example, the vortex chamber may be in the form of an inclined vortex chamber having one or more ramps as protrusions. Fig.16A -D shows various views of an inclined vortex chamber having one or more ramps 54 .

[0085] Fig.17 is an exploded view of a spray wand with a refill cartridge.

[0086] In another embodiment of the present invention, reference Fig.18 and 19 , the spray wand 200 is provided with an integrated screen 260 and a swirl chamber 242, but without a refill cartridge. Fig.182 is a side view of a spray wand 200 with an integrated screen 260 and a swirl chamber 242. Similar to a spray wand with a refill cartridge, a spray wand with an integrated screen and a swirl chamber works in the same manner but without a refill cartridge. In this embodiment, a spray wand 200 with an integrated screen 260 and a swirl chamber 242 permanently fixes the screen in the spray body 212 and the swirl chamber 242 in the cut-off end 216. The user loads the spray body 212 with solid chemicals and tightens the spray body to the cut-off / hose end 216 to begin use. At the cut-off / hose end 216, the user connects a garden hose with a swivel hose nut. The user can turn the fluid flow on and off using a shut-off valve. Water passes through the cut-off / hose end in a tangential vortex, tumbling through the solid chemicals, maximizing exposure to the solid chemicals, and resulting in a high applied chemical concentration. The solid chemical / fluid mixture is dispensed at the distal spray nozzle 210. The user can rotate the spray nozzle 210 to select the desired spray setting. The nozzle has one or more detent positions, more preferably four detent positions.

[0087] Fig.19 is a cross-sectional side view of a spray bar with an integrated screen 260 and swirl chamber 242. Fig.19 There is no refill cartridge. The vortex chamber is permanently fixed or glued in place.

[0088] Fig. 20 is a cross-sectional isometric view of a spray bar 200 having a swirl chamber 242 . Fig. 20 The direction of water flow is shown as it enters the spray wand 200 and passes through the swirl chamber 242 .

[0089] Fig.21 is a cross-sectional view of the angled wand spray end 226. Fig.21 As shown in FIG, a set of smaller holes 270 are molded into the end of the spray body. This function prevents the chemical from flowing downward and blocking the single larger hole. This function is provided by a series of holes 270 or a permanent screen.

[0090] In another embodiment of the present invention, a disposable and non-refillable spray wand 300 is provided. Fig. 22 324. The spray wand has an integrated screen 313 and swirl chamber 342. In this embodiment, the disposable spray wand eliminates the refill cartridge. The disposable spray wand 300 with integrated screen 313 and swirl chamber 342 has the screen 313 permanently fixed in the spray body 312 and the swirl chamber 342 permanently fixed in the cut-off end. The disposable spray wand 300 will be pre-filled with solid chemicals and the spray body 312 is permanently fixed to the cut-off end / hose end with a shut-off valve 320.

[0091] At the cut-off / hose end, the user connects a garden hose with a non-swivel hose nut 318. The user can turn the fluid flow on and off with a shut-off valve 320. Water passes through the cut-off / hose end and vortex chamber 342 in a tangential vortex that tumbles through the solid chemical, maximizing exposure to the solid chemical, resulting in a higher applied chemical concentration. The solid chemical / fluid mixture is dispensed at the far end of the spray body.

[0092] Fig.23 yes Fig. 22 The spray wand 300 includes a single spray hole 315, an integrated screen 313, a non-detachable spray body 312 with pre-filled solid chemical, an integrated swirl chamber 342 and an integrated hose nut 318.

[0093] Fig.24 A spray orifice 315 is shown. Fig.24 A single molded-in orifice for delivering the chemical mixture is shown. The disposable may optionally contain a spray nozzle 210.

[0094] Fig.25 is a close up view of the integrated shut-off / hose end shut-off valve 320 . Fig.25 A close-up view of the component integration is provided.

[0095] In an embodiment of the present invention, a spray wand having a car wash nozzle is provided. Fig.26 A spray wand 400 is shown having a car wash nozzle 410 for use with a brush or cloth, such as a microfiber cloth, and a refill cartridge 430 containing solid chemicals suitable for washing a car. The car wash spray nozzle 410 has a large flat footprint preferably with at least two scrubbing modes: a tip 440 on one end for getting into tight spots, and a flat surface 450 on the opposite side. The user will wrap the car wash spray nozzle 410 with the microfiber cloth and plug the loose end into the through hole 460. The user can cut a hole in the center for a fan spray or to wet the microfiber cloth with a fan spray. The car wash spray nozzle 410 preferably has two fan spray nozzles 470 to provide broad coverage of the water / solid chemical spray in either scrubbing mode.

[0096] Fig. 27 A car wash spray nozzle 410 is shown with two or more spray nozzles 470. The selections may be fan, stream, sprinkle, etc.

[0097] Fig.28 FIG. 4 is a side view of a car wash spray nozzle 410. Fig.28 , a through hole 460 is shown for plugging the end of the microfiber cloth.

[0098] In such Fig.29In the embodiment of the present invention shown in, provide the spray bar 500 with flushing selection feature.As the feature of spray bar 500, flushing setting exists in refilling barrel 520 inside.As shown in the figure, spray bar 500 has the center channel or pipe 530 extending along the length of spray bar 500, and it bypasses the solid chemicals of refilling barrel 520 for flushing setting.Refilling barrel 520 keeps solid chemicals and is replaceable.At the cut-off / hose end, the user is connected to the garden hose with the rotating hose nut.The user can adopt the stop valve to open and close the fluid flow to guide water through or around the center channel or pipe 530.

[0099] In the first option, water passes through the refill cartridge 520 with a vortex chamber in a tangential vortex that tumbles through the chemical, thereby maximizing exposure to the chemical, resulting in a higher applied chemical concentration. The chemical fluid mixture is dispensed at the distal nozzle. The user can rotate the nozzle to select the desired spray setting. In the second option, water passes through the refill cartridge 520 down the center of the refill cartridge, bypasses the solid chemical and flows out of the spray nozzle, thereby providing a non-chemical rinse function.

[0100] Fig.30 Is equipped with flushing-vortex mode Fig.29 The spray rod 500 works as follows. When the stop ball valve 550 is in Fig.30 In the position shown in FIG. 5 , water enters the hole 545 in the center of the shut-off ball valve 550 and is diverted through an annular hole or channel that directs the water flow through a single vortex chamber 540 .

[0101] Fig.31 yes Fig.29 Cross-sectional view of the spray wand with the flushing-swirl pattern and the hose cut-off end suppressed. Fig.31 The hose cut end is restrained. Fig.31 It shows how water enters through a single hole 545 and exits the shut-off ball valve 550 through an annular hole or passage 555 to the vortex chamber 550 .

[0102] Fig.32 It has a flush-flush mode Fig.29 500. When the ball valve 550 is in the illustrated position, water enters the annular hole or passage 555 in the ball valve 550 and is diverted through the central hole or passage 545 which directs the water to the central flush tube 530.

[0103] Fig.33 1 is a cross-sectional view of a spray wand with flush-flush mode-hose cut-off end suppressed. In this view, the hose cut-off end is suppressed and how water enters and flows out of the shut-off ball valve 550 is shown.

[0104] Fig.34A flushing shutoff valve 550 is shown. Fig.34 As shown in Figure 1, water flows into and out of a channel in a shutoff ball valve. The channel allows the flow rate to be selected by rotating the ball valve 180 degrees, which directs the fluid flow to the desired solid chemical or flushing channel. When in the orthogonal 90 degree position, the fluid flow stops.

[0105] Fig.35 is an external view of the cut off / hose end. Fig.35 It shows how the user can rotate around the valve ball selector 560 to achieve the desired spray function.

[0106] In another embodiment of the present invention, a refill cartridge assembly for use in a spray wand is provided, wherein the refill cartridge provides flushing capabilities to the spray wand. Fig.36A , 36B 36C and 36C are isometric views of a refill cylinder assembly 600 with one or more external flushing channels extending along the length of the refill cylinder 610. The refill cylinder 610 can be made of a transparent material so that the contents are visible. As shown, the refill cylinder 610 includes one or more external flushing channels 620 on the outer wall of the body 615 of the refill cylinder 610 to allow water to pass through and flow out of the refill cylinder in the spray body for flushing. The external flushing channel 620 can be in the form of a notch or groove formed in the outer wall of the body 615. The channel extends continuously from one end of the refill cylinder to the other end. In a preferred embodiment, the refill cylinder uses two flushing channels, however, more or less flushing channels can be realized. The spacing between the flushing channels can be varied. The cross-sectional area should be considered in the number and geometry of the flushing channels so that the flow of water downward along the flushing channel is not restricted during the flushing mode, because the flushing channel is used to guide the water flow in the flushing mode. The vortex chamber 630 is attached to the proximal end of the refill cylinder 610.

[0107] Fig.37 yes Fig.36A , 36B and an interior view of the refill cartridge assembly 600 of 36C.

[0108] Fig.38 6 is an axial view of the refill cartridge assembly 600. This view depicts two flush channels 620 with unobstructed flow paths. The refill cartridge 610 with a vortex chamber 630 fixed thereto enables a vortex action for water swirl and mixing and ensures proper dilution of the chemicals in the refill cartridge assembly. The vortex chamber 630 is preferably fixed or snapped or screwed into the refill cartridge 610 with a child-resistant feature.

[0109] Fig.397 is an external view of a handle 710 and a rotatable valve 720 in a cleaning position of a spray wand 700 with a refill cartridge having external access according to an embodiment of the present invention. In this view, the handle is seen with a "clean" and "OFF" user selection mode 730 molded in. The valve 720 can be rotated so that the arrow on the top of the rotatable valve is aligned with the user selection mode 730. When in the selection mode 730, the valve 720 provides positive user feedback by touching the stop 730. In this view, the valve 720 is rotated to the "clean" position or mode 730. Internally, water is directed from the hose end inlet 740 to the vortex chamber of the refill cartridge.

[0110] Fig.40 7 is an internal view of a handle 710 and a rotatable valve 720 in a cleaning position of a spray wand 700 with a refill cartridge having an external passage according to an embodiment of the present invention. In this view, when the valve is rotated to the "clean" position or mode 730, water is directed from the hose end inlet to the vortex chamber 750 of the refill cartridge 760 as shown by the arrow. In this mode, water passes through the center of the refill cartridge containing solid chemicals. The refill cartridge is screwed directly into the handle and is threaded. When the valve 720 is set to the "rinse" mode, the water flow is unrestricted and allows for the maximum spray output of the "reachable range" of the cleaning solution. When in the rinse mode, the refill cartridge leaves enough space to allow water to bypass around the refill cartridge.

[0111] Fig.41 7 is an external view of a handle 710 and a rotatable valve 720 in a flush position of a spray wand 700 with a refill cartridge having an external passage according to an embodiment of the present invention. In this view, the handle can be seen with a "flush" and "off" mode molded into it. The valve 720 can be rotated so that the arrow on the top of the rotatable valve is aligned with the user's selection mode 730. When in the selection mode, the valve 720 provides positive user feedback by touching the stop 730. In this view, the valve 720 is rotated to the "flush" position or mode 730. Internally, water bypasses the vortex chamber of the refill cartridge from the hose end inlet, and the flow is directed around the external flushing channel of the refill cartridge.

[0112] Fig.42 7 is an interior view of a handle 710 and a rotatable valve 720 in a flush position of a spray wand 700 with a refill cartridge having an external passageway according to an embodiment of the present invention. In this view, the valve 720 is rotated to a "flush" position or mode. Internally, water directed from a hose end inlet 740 bypasses the internal vortex chamber 750 of the refill cartridge 760 as indicated by the arrows, and the flow is directed around the external flush passageway of the refill cartridge.

[0113] The spray rod of the present invention can have different sizes, including, but not limited to, length. Similarly, the refill barrel can have different sizes, including, but not limited to, length. For example, the refill barrel can be 1 / 4, 1 / 3, 1 / 2, etc., of the length of the spray rod body, and one or more refill barrels are connected such as by threaded connection to extend the entire length of the spray rod body. Different solid chemicals may be contained in each connected refill barrel. Fig.43 is a perspective view of a multiple and stackable refill cartridge option with the refill cartridges not attached. Fig.44 is a perspective view of a multiple and stackable refill cartridge option with the refill cartridges attached. Each refill cartridge may contain its own solid chemical, which may be the same or different from the other refill cartridges.

[0114] In an embodiment of the present invention, the spray wand further comprises an insertion / refilling adapter. The refilling adapter is threaded and is to be inserted into the hose wand handle (cut-off end).

[0115] Fig.45 An optional insertion / refill cartridge adapter is shown. Preferably, the insertion / refill cartridge adapter is annular and has internal and external threads. Fig.45 An insertion / refill cartridge adapter is shown with standard threads, but custom threads are possible. The insertion / refill adapter provides the ability to use different lock and key configurations for the refill cartridge.

[0116] Fig.46 A hose wand handle is shown with an insertion / refill cartridge adapter received by the hose wand handle. The insertion / refill cartridge adapter is inserted into the handle of the wand hose end and is configured to receive a mating threaded end of a refill cartridge.

[0117] Fig.47 A refill cartridge that can be inserted into an insertion / refill cartridge adapter is shown. In this example, the cartridge shown has custom threads, and matching custom threads are required on a corresponding insertion / refill cartridge adapter.

[0118] Fig.48 A hose wand sprayer assembly is shown showing the installed insertion / refill cartridge adapter and the interrelationship of the various components.

[0119] There are many benefits associated with the spray wand of the present invention. The benefits of the spray wand include, but are not limited to, ergonomics, ease of refilling, longer lasting chemicals, longer spray distance and longer reach, easy visibility / transparency for refilling, versatility of range of motion and metering benefits, improved safety, lighter weight for transport and use of solid chemicals, etc.

[0120] The spray wand of the present invention is ergonomic, for example, by providing balance to the user when the hose is connected to the handle, so that the consumer can use the spray wand with one hand when cleaning, rather than needing to use two hands. The use of solid chemicals in the spray wand of the present invention makes the spray wand lighter in weight compared to other products that require water as part of their formulation chemicals.

[0121] Therefore, it will be readily understood by those skilled in the art that the present invention is susceptible to widespread use and application. Without departing from the spirit or scope of the present invention, many embodiments and variations of the present invention other than those described herein, as well as many changes, modifications and equivalent arrangements, will be apparent or reasonably implied from the present invention and the foregoing description thereof. Therefore, although the present invention has been described in detail herein in relation to preferred embodiments, it should be understood that the present disclosure is only illustrative and exemplary of the present invention, and is only for the purpose of providing a complete and realized disclosure of the present invention. The foregoing disclosure is not intended or construed to limit the present invention or otherwise exclude any such other embodiments, variations, changes, modifications and equivalent arrangements.

Claims

1. A refill cartridge assembly comprising: a refill cartridge having a proximal end and a distal end, wherein the distal end of the refill cartridge has at least two or more apertures, or a screen; and A swirl chamber, wherein the swirl chamber is attached to the proximal end of the refill cartridge, wherein the swirl chamber is attached to the refill cartridge by a threaded connection with a child-resistant ratchet feature or by chemical adhesion or welding.

2. The refill cartridge assembly of claim 1, further comprising a solid chemical in the refill cartridge.

3. The refill cartridge assembly of claim 1, wherein: The refill cartridge is transparent.

4. The refill cartridge assembly of claim 1, wherein: The refill cartridge has a tubular body.

5. The refill cartridge assembly of claim 1, wherein: The refill cartridges have varying lengths.

6. The refill cartridge assembly of claim 1, wherein: The refill cartridge has one or more channels on an outer surface of the refill cartridge.

7. The refill cartridge assembly of claim 6, wherein: The one or more channels extend along the length of the refill cartridge.

8. The refill cartridge assembly of claim 1, wherein: The refill cartridge has two channels.

9. The refill cartridge assembly of claim 8, wherein: The two channels are located on opposite sides of the refill cartridge.

10. The refill cartridge assembly of claim 1, wherein: One or more refill cartridges are connected to each other.

11. The refill cartridge assembly of claim 10, wherein: The one or more refill cartridges contain different solid chemicals.

12. The refill cartridge assembly of claim 10, wherein: The one or more refill cartridges contain the same solid chemical.

13. A refill cartridge assembly comprising: A refill cartridge having a proximal end and a distal end, and a vortex chamber, wherein the vortex chamber is attached to the proximal end of the refill cartridge and the distal end of the refill cartridge includes one or more apertures, and wherein the vortex chamber is configured for fluid to exit in a tangential manner, wherein the refill cartridge has a varying length.

14. A refill cartridge assembly comprising: A refill cartridge having a proximal end and a distal end, and a vortex chamber, wherein the vortex chamber is attached to the proximal end of the refill cartridge and the distal end of the refill cartridge includes one or more apertures, and wherein the vortex chamber is configured for fluid to exit in a tangential manner, wherein the refill cartridge has one or more channels on an outer surface of the refill cartridge.

15. A refill cartridge assembly comprising: A refill cartridge having a proximal end and a distal end, and a vortex chamber, wherein the vortex chamber is attached to the proximal end of the refill cartridge and the distal end of the refill cartridge includes one or more apertures, and wherein the vortex chamber is configured for fluid to exit in a tangential manner, wherein the refill cartridge has two exterior channels.

16. A refill cartridge assembly comprising: A refill cartridge having a proximal end and a distal end, and a vortex chamber, wherein the vortex chamber is attached to the proximal end of the refill cartridge and the distal end of the refill cartridge includes one or more apertures, and wherein the vortex chamber is configured for fluid to exit in a tangential manner, wherein one or more refill cartridges are connected to each other.

17. A vortex chamber comprising: at least one open slot or channel on the rear side of the vortex chamber, and One or more raised protrusions having a fluid exit window on a front side of the vortex chamber, wherein the front side of the vortex chamber is configured for fluid to exit in a tangential manner, and wherein the front side has tabs or prongs that provide a one-way snap feature for attachment to a refill cartridge.

18. The vortex chamber of claim 17, wherein: The one or more raised protrusions are ramps.

19. The vortex chamber of claim 17, wherein: The fluid outlet window has a geometric shape.

20. The vortex chamber of claim 19, wherein: The geometric shape is a rectangle, a square, a circle, other geometric shapes and combinations thereof.

21. The vortex chamber of claim 17, wherein: There are two open slots or channels on the rear side of the vortex chamber.

22. The vortex chamber of claim 17, wherein: There is a spacing between the at least two open slots or channels.

23. The vortex chamber of claim 22, wherein: The at least two open slots or channels are geometrically shaped.

24. The vortex chamber of claim 23, wherein: The geometric shape is selected from the group consisting of a rectangle, a square, a spiral, other geometric shapes, and combinations thereof.

25. The vortex chamber of claim 17, wherein: The front side has a threaded connection with a child-resistant ratchet feature.

26. The vortex chamber of claim 17, wherein: The rear side of the vortex chamber is configured for fluid to enter the rear side of the vortex chamber in a linear manner.

27. The vortex chamber of claim 17, wherein: The vortex chamber produces tumbling of the fluid.

28. The vortex chamber of claim 17, wherein: The vortex chamber causes a change in direction of the fluid.

29. A vortex chamber comprising: A component having a front side and an opposite rear side, wherein at least one open slot or channel is provided on the rear side of the component; and one or more raised protrusions having a fluid exit window on a front side of the component, and wherein the front side of the component is configured for fluid to exit in a tangential manner, wherein the front side of the component has a threaded connection with a child-resistant ratchet feature for attachment to a refill cartridge having a mating threaded connection.

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