Systems, methods, and apparatus for removing paint and lines in synthetic sites with trimming brushes and vacuum

Abstract

An athletic field removal / extraction and vacuum suction device or apparatus configured to be pushed / pulled by a vehicle to remove residual paint and other particles, such as from markings or logos, characters and lines on synthetic or other athletic fields, in particular from straight lines on the field. The apparatus includes a frame having a coupling mechanism for mounting the apparatus to a vehicle. At least one sprayer sprays a chemical scavenger onto the indicia to loosen or dissolve the paint. After the lines are brushed with a brush to remove paint and water, the removed paint particles, including any chemical scavengers and markings dissolved on site, are vacuum drawn into a recovery tank for treatment elsewhere. Also disclosed is a method of cleaning a synthetic or other athletic field as such and removing by vacuum suction of accumulated debris.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is related to U.S. Serial No. 63 / 439,103, filed on January 14, 2023, entitled “System, Method, and Apparatus for Synthetic Field Paint Removal and Vacuum,” and U.S. Serial No. 63 / 448,612, filed on February 27, 2023, entitled “System, Method, and Apparatus for Removing Synthetic Field Paint with an Edge Brush and Vacuum.” Both applications were filed by the same applicant and are incorporated herein by reference in their entirety. Technical Field

[0003] The present invention relates to sports field maintenance equipment and, more particularly, to maintenance equipment for cleaning text and logos on synthetic sports fields and removing or extracting paint marks from synthetic turf fibers and infill materials, thereby allowing for quick sport changeovers and minimizing field hardness and shadow effects; and more particularly, to improved erasure of lines and other markings from field surfaces by vacuuming away all particles. Background Art

[0004] Synthetic turf fiber sports fields have specific characteristics that make them difficult to prepare, maintain, and clean. Management organizations are constantly defining maintenance requirements. Often, with heavy use by sports teams, marching bands, and others, the surface of synthetic sports fields quickly becomes permanently worn by the infill material (usually rubber granules or similar), becomes compressed, caked, and covered with dust and dirt from the atmosphere.

[0005] In addition to creating rutting, diminishing performance, and reducing the quality and safety of synthetic turf sports surfaces, heavy use can quickly degrade the aesthetic appearance of the field.

[0006] Capping is a common phenomenon on synthetic turf sports fields. Capping is a common term that refers to a situation where the infill of a synthetic turf field becomes compacted and then sticks to the dirt / dust, forming a hard shell of infill. This further damages the synthetic grass fibers or blades because when the grass fibers extend from the hard pan of the infill with the shell and are stepped on by a player's shoe or spikes, the fibers are sharply bent by this action, wrinkling and sometimes even cutting. With many synthetic sports fields being used for televised events, it is generally desirable to maintain the quality and appearance of the field. These goals are difficult to achieve in the art.

[0007] Due to the need for consistency and safety, the National Football League (NFL) and other organizations often test the consistency and surface hardness of playing surfaces. For example, infill within synthetic playing surfaces must also be evenly distributed to create a flat and consistent playing surface. In areas where infill is not evenly distributed, such as where paint and other debris has accumulated, it is necessary to add, remove, or level that area of the surface until it meets the NFL’s standards. By taking these measures, the league ensures that each playing field is safe and playable for all teams. In fact, many current systems and technologies are designed to level debris that has accumulated on the field, making the surface flat, without addressing the removal of the debris.

[0008] Furthermore, even if these fields are well maintained, the long-term effects of paint accumulation, i.e., repeatedly painting over the surface, causes paint to unevenly adhere and accumulate, causing the field to harden, and to cast shadows on the high profile synthetic fields, which are more apparent in bright light. Moreover, with the continued emphasis on player safety, the frequent testing of playing surfaces, and the need to take immediate remedial action, there is an urgent need for an effective and efficient technology to accomplish the arduous task of simply maintaining synthetic playing fields. Moreover, as previously discussed, because the existing technologies do not adequately address the problem of debris accumulation in field maintenance, there is a need for a more cost-effective and efficient method to provide this service, preferably as a supplement to existing equipment.

[0009] With the increasing importance of sports to society, and these current problems yet to be solved, there is an urgent need for a solution, whereby not only is there a need for equipment and technology for cleaning and maintaining these fields, but also for the removal of accumulated debris. In fact, there is a need to improve the cleaning and complete removal and extraction of existing paint playing field logos and lines, for example, to enable the quick application of new and different playing lines.

[0010] Because current devices and methods are unable to remove playing lines and logos from playing surfaces or are extremely inefficient, there is clearly a need for equipment and technology to address this problem, such as the technology set forth herein. SUMMARY

[0011] In one exemplary embodiment, a synthetic playing field lettering, logo, and line extraction device is disclosed that is configured to be pushed (or pulled) across a playing field surface, such as a synthetic playing surface, by a vehicle, for example, for removing prior logos from the playing field surface and extracting residual paint and other materials on the playing field by vacuum, thereby creating a new surface for insertion of new lettering, lines, and logos, and providing a safe playing surface. These technologies can also be used to treat or soften a hard playing field by removing accumulations of unwanted paint and other debris embedded in the synthetic playing field material.

[0012] The synthetic sports field extraction apparatus includes a vehicle having a coupling mechanism at the front or rear of the apparatus for mounting or connecting to a frame to which one or more extraction apparatuses are connected. While modularity of components is preferred, alternatively the vehicle and cleaning apparatus herein can be one device.

[0013] In some example embodiments, the extraction apparatus employs a sprayer for pre-spraying a chemical cleaning agent on the paint and other markings on the synthetic field, which aids in paint removal.

[0014] These embodiments can also include spraying water with downward pressure and scrubbing or treating the field surface under careful control of an operator, possibly using multiple brushes, thereby softening the paint and other residue to be removed and preparing it for suction, as opposed to prior art that merely disperses debris on the field into the field drainage system, which as discussed above and below, causes future hardening and shadowing issues.

[0015] In other example embodiments, to improve on the above, the synthetic sports field extraction apparatus includes a vacuum system that is also attached or coupled to the frame, such as between the scrubbing brushes and the vehicle described above, which collects various liquids and loosened paint material from the surface that has been treated as described above, which are dissolved, and then the vacuum system completely removes the mixture of chemicals, added water, loosened paint particles and other residue from the field.

[0016] In these embodiments, the paint or other markings on the field surface are loosened by the chemicals and brushes described above, and mixed in a watered solution or slurry by the sprayer described above, and then vacuumed and introduced into a recovery tank, as opposed to merely being dispersed into the specific field drainage system as is typical in prior art. Further, for specific uses, such as line removal, complete paint removal is more desirable so that different lines for different sports can be applied later, and so that confusion does not result from line residue, thereby allowing a given sports arena or field to be used and reused for different sports with different line and logo configurations.

[0017] According to further embodiments, a method of extracting paint or other markings from a synthetic sports field is provided. The method includes the steps of: using a vehicle to push (or pull) an extraction apparatus over a synthetic sports field, particularly over the text, lines and logos on the synthetic sports field, spraying a chemical cleaning agent, water and other liquids in the designated area, loosening paint or other residual particles, and using brushes to further help loosen the paint on the artificial fibers. The invention is particularly directed to completely removing line paint particles from the playing field, preferably in one pass.

[0018] The method of the present invention also includes the step of vacuuming the treated areas on the synthetic playing field and the lines thereon to physically remove the compounds by vacuuming away the chemicals, sprayed water, loose paint and other debris material that has accumulated on the field to minimize further damage to the synthetic field and also to provide a mechanism to reduce the hardening of the playing field caused by previously applied paint and other particulates left behind during normal trimming or maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0019] While the specification concludes with claims particularly pointing out and distinctly claiming that which is regarded as the present invention, it is believed the present invention will be better understood from the following description in conjunction with the accompanying drawings, in which like numerals designate like elements and other elements, in which:

[0020] Figure 1 shows a side perspective view of a field cleaning assembly according to the teachings of the present invention in a first embodiment, showing the connected vehicle and including the plurality of brushes and fluid spraying components, all on the frame shown fixed to the front of the vehicle, and showing the vacuum and removal system thereon for removing debris from the field;

[0021] Figure 2 shows Figure 1 a front perspective view of the field cleaning assembly shown;

[0022] Figure 3 is Figure 1 and Figure 2 a side perspective view of the vacuum shown in the first embodiment according to the principles of the present invention shown in

[0023] Figure 4 is Figure 3 a top view of the vacuum shown in

[0024] Figure 5 is a bottom view of the vacuum shown in Figure 1-Figure 4 cleaning debris from the field, showing the vacuum ports and fluid passages;

[0025] Figure 6 is a side view of a line cleaning assembly according to the teachings of the present invention in a second embodiment or configuration, also showing the connected vehicle and including the brushes and fluid spraying components, all on the frame and shown fixed to the side of the vehicle, and showing the vacuum and system thereon for removing paint and other debris from a given paint line on the surface of the field;

[0026] Figure 7 is Figure 6side view of the vacuum device according to the principles of the present application in the second embodiment shown in the middle, showing the vacuum device deployed along a side of the vehicle, and various brush and sprayer components;

[0027] Figure 8 is a representative side view of the components in the above configuration shown in the above figures running over a surface of a venue, such as a venue line, showing chemical treatment, brushing, water rinsing, pooling and dissolving residue for removal, and vacuuming away debris; and

[0028] Figure 9 is a side view of another configuration of the present application in a third embodiment or modular configuration, another deployment incorporating components of the first embodiment, Figure 1 and Figure 2 a venue cleaning assembly shown in Figure 6 and Figure 7 the second embodiment, with corresponding vacuum devices and other components to generally remove debris from a surface of a venue, as well as paint and other debris from a given line on the surface of the venue. DETAILED DESCRIPTION

[0029] The present application will be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments of the present application are shown. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and fully convey the scope of the application to those skilled in the art. Therefore, one skilled in the art will appreciate that the present application can be practiced with other embodiments and with structural changes without departing from the scope of the present application.

[0030] Reference is now made to the drawings, wherein Figure 1 a venue cleaning apparatus, assembly or system according to a first embodiment of the present application is shown, generally indicated by reference numeral 100. Also shown is a representative self-propelled sports venue maintenance tractor or vehicle, generally indicated by reference numeral 105, which can be used with the venue cleaning system 100 disclosed herein, as well as the sprayer, brush, extraction and vacuuming apparatus and methods in other exemplary embodiments discussed in greater detail below. However, the concepts discussed herein should be interpreted as equally applicable to non-self-propelled units configured as tools to be connected to, and towed, guided (i.e., steered) and / or powered by a vehicle such as a tractor or utility vehicle.

[0031] However, in the presently preferred configuration, the vehicle 105 is attached to the above-described venue cleaning system 100 and pushes it, whereby the driver or operator of the vehicle guides or steers the system 100 over the venue. It should be appreciated that through imaging and geo-positioning, paint lines, logos and other trademarks and other debris on a playing venue can be automatically and precisely cleaned, that is, even without a driver, just like the current automated vehicles and equipment in agriculture, trucking and some driving.

[0032] Many of the details of the above-described vehicle 105, as well as the operation of the synthetic venue finishing and maintenance system, can be found in Applicant’s U.S. Patent No. 9,371,617, the entirety of which is incorporated herein by reference. Since many of the same components in Applicant’s product line are employed in the present invention, some of which are illustrated and described in the above-identified patent, the modularity of such design and purpose is also a creative feature encompassed herein.

[0033] Thus, it should be appreciated that the above-described vehicle or tractor 105 can be used to finish and prepare a given sports venue, and when configured, can also be used to generally or specifically clean or extract markings, that is, paint of the lettering, logos and other playing lines described herein.

[0034] In fact, Applicant is a leader in many aspects of sports venue finishing, maintenance and marking application, that is, painting of the necessary lines, logos and lettering for the corresponding games and teams. Applicant is also a leader in various paint and other marking removal equipment and techniques, which are equally important in the case of simultaneous (e.g., the next day) different sports at the same venue.

[0035] Thus, since many high-end sports venues have multiple uses, in multiple sports, including team names, playing lines and emblems, end zones, numbers and many other distinguishing features, it can be necessary to change all of these indicia or markings between discrete uses, that is, clean one and completely replace the now-cleaned surface with the markings of the next game, new team, next sponsor, etc. For example, football, soccer, lacrosse, baseball and other sports playing lines are distinctly different, and complete erasure of the previous markings is absolutely necessary for preparation of the new, different upcoming game that can start immediately.

[0036] For certain athletic or playing field surfaces, the removal of these markings can be facilitated by means of sprayers and brushes, as previously noted, the Applicant being a leader in the equipment and chemicals for such use. The present invention is based on the Applicant's success in the physical and chemical removal of markings, as well as the aforementioned patents and the teachings set forth herein. Thus, the present invention has an attachment to the aforementioned vehicle 105 which sprays a chemical remover product, as well as water, through a plurality of nozzles to painted surface portions (or all) of the field surface, and then employs a vacuum system to remove the various liquids and loosened material.

[0037] In Figure 1 In the first embodiment shown, an improved system is shown for the extraction or removal of the aforementioned paint and other debris left on playing fields, particularly accumulated paint particles, such as from painted lines. In operation, the present invention is preferably a one-time removal process, preferably by one operator of the system. The Applicant wishes to point out that for the case of a large sports venue where a suitable synthetic paint has been previously used on the field, the present invention's remover equipment will increase the efficiency of use of the large sports venue, and achieve field turnaround through the improved configuration shown herein for deployment.

[0038] Figure 1 The tractor or vehicle 105 in the first embodiment shown is depicted as a mobile vehicle, including a frame 106, with an operating station 107 mounted thereon having a seat, generally indicated by reference numeral 108, as well as an engine and fuel source (not shown). Also shown are fluid containment tanks, generally indicated by reference numeral 109, containing chemicals for the removal of paint from the field, respectively. Also shown is a water storage tank, generally indicated by reference numeral 110, which assists in the creation of a slurry for the subsequent removal of debris. The use and mixing of these liquids in the treatment of the field is further described below. Also shown are the respective fittings and hoses which forward these liquids, as shown and further described below.

[0039] Also shown is a recovery tank, generally indicated by reference numeral 111, which collects liquids from the field surface to be disposed of elsewhere (rather than just to be driven off the field surface as with prior art systems), and in order to assist in the removal of the collected debris, a suction motor is shown, generally indicated by reference numeral 112, which provides the necessary suction pressure for the vacuum device described in more detail below.

[0040] Attached to the frame 106 and the front and rear of the tractor 105 are lifting mechanisms, generally designated by reference numeral 113, such as conventional hydraulic lifting mechanisms and cylinders, which provide operating modes with up and down pressure, a free-floating mode, and a mode for locking the position at a selected height. Thus, the front lift 113 allows the position and height of the apparatus 100 to be adjusted relative to the vehicle 105 and the field surface. The vehicle includes variable-speed drive wheels, generally designated by reference numeral 114, and steering wheels, generally designated by reference numeral 115. The vehicle 105 also includes a steering wheel, generally designated by reference numeral 116, which allows an operator, seated in a seat 108 at an operator's station 107, to guide the vehicle 105 around the field and, as described below in the second embodiment, to guide the vehicle 105 for more precise line or other paint removal.

[0041] Further details regarding the operation of vehicle 105 may be found in Applicant's aforementioned US Patent No. 9,371,617 ("Applicant's '617 Patent"), which is incorporated herein by reference.

[0042] As shown in the attached figure Figure 1 and Figure 2 As shown in FIG, in this embodiment, the assembly or apparatus 100 comprises a floor cleaning assembly, generally indicated by the reference numeral 120, supported on a frame or structure, generally indicated by the reference numeral 121, for supporting various components.

[0043] As shown, in this embodiment, the floor cleaning assembly 120 includes three brushes, each generally designated by the reference numeral 122, attached to the aforementioned frame 121, which is generally designated by the reference numeral 117 and is attached to the floor cleaning assembly 120. Figure 4 The vehicle 105 is secured to the front of the vehicle 105 by a plurality of removable bolts or couplers shown in FIG. As shown, the brushes 122 in this embodiment are arranged in a triangular configuration, with one brush at the front and two brushes positioned behind it. In this manner, the vehicle 105 and assembly 100 can be used separately, for example, using different vehicles for propulsion. Also shown are individual brush motors, generally designated 123, which, during operation, drive the brushes 122, i.e., control their speed and position relative to the surface of the field. In a preferred embodiment, the brush motors 123 are Hydroliz drive motors.

[0044] As previously discussed, the application of water and chemical removers to the underlying field surface, along with the precise application of the brush, i.e., the amount of downward pressure applied and other factors, will loosen paint and other particles for removal by the vacuum system that follows, i.e., the operator of the vehicle 105 positions the brush 122 over the field area of ​​interest and simply continues forward motion, causing the vacuum system to automatically aspirate such debris in the manner discussed below.

[0045] However, it should also be appreciated that the precise application and duration of the suction can be controlled by the vehicle operator, for example, using a control panel, generally indicated by reference numeral 124, which is located on an arm, generally indicated by reference numeral 125, which is fixed to the frame 121 of the aforementioned floor cleaning assembly 120 and extends toward the operator station 107 so that the operator can easily access and manipulate the control panel 124.

[0046] Referring again to Figure 1 , a plurality of sprayers are shown through which paint and debris on the floor surface can be treated and removed. It should be appreciated that the configuration and other details of the individual sprayers, such as the spray heads, nozzles and other features, will vary depending on the purpose and composition, as described in more detail in the Applicant's '617 patent. For example, in the preferred embodiment, there is a front pre-wash sprayer or chemical sprayer, generally indicated by reference numeral 126, which sprays paint-removing chemicals or other chemicals for treating the floor surface or floor lines, as discussed in more detail below.

[0047] As shown, one or more hoses, generally indicated by reference numeral 127, ultimately connect the aforementioned front pre-wash sprayer 126 to the source of the chemicals, i.e., the aforementioned fluid containment tank 109 that stores the chemicals. As Figure 1 shown, the chemical tank 109 is shown juxtaposed with the water tank 110. However, as Figure 6 shown, in another embodiment, the chemical tank 109 can be separate from the water tank 110. The operator uses the aforementioned control panel 124 to control the duration and amount of chemicals sprayed onto the floor. It should be appreciated that the operator can have grades or levels of application of such chemicals, such as standard, heavy, etc. Similar grades can apply to the use of other liquids and pressures described herein. In the preferred embodiment, the chemical used is a non-foaming biodegradable detergent or composition equivalent thereto.

[0048] A plurality of sprinklers, intermediate sprayers, generally indicated by reference numeral 128, are also shown, which are disposed in front of each of the aforementioned brushes 122 to assist in cleaning paint, filler and other aspects of the floor on the artificial fibers and to mix with the chemicals previously sprayed. It should be appreciated that the water at this point is preferably a mist. A flood sprayer, generally indicated by reference numeral 129, is also shown, which is disposed behind the rear brush 122 and immediately in front of the vacuum system described in more detail below, which, as discussed in more detail herein, dissolves the materials present, providing a slurry of debris, chemicals and other residue mixed with the water of the flood, which will be drawn away by the vacuum.

[0049] As Figure 6 and Figure 7As shown, a plurality of water lines, generally indicated by reference numeral 130, supply water to various water jets, which will be discussed in greater detail below. In order to make the apparatus 100, which is disposed on the frame 121, mobile, the frame 121 includes wheels, generally indicated by reference numeral 131.

[0050] One of the problems with prior art field cleaning techniques is so-called paint build-up, where paint does not wash off completely, but rather seeps into the field surface, making complete removal more difficult. As previously discussed, paint build-up also results in surface hardening and shadowing, in which case the cleaned or retouched surface still shows a weak version of the previous markings mixed with the current markings, i.e., retouching alone is not sufficient to resolve these issues. Of course, this is unsatisfactory, especially for well-known institutions such as the NFL and universities. For example, the NFL carefully monitors field surfaces and checks the hardness of each field before use in a game, with areas that look too hard being a hazard for play, requiring immediate remedial action. In fact, these institutions benefit greatly by increasing safety. By eliminating such shadowing, they further benefit, for example, by increased revenue due to more games at the stadium. Since shadowing is caused by residual paint and debris not being removed, the present invention resolves this problem by completely removing the offending particles.

[0051] Referring again to Figure 1 and further referring to Figure 3 and Figure 4 , a vacuum assembly or system, generally indicated by reference numeral 140, is shown for removing or extracting the above-mentioned treated markings from the field surface. As previously discussed, after treatment with a chemical remover and washing with water, a slurry mixture results, which is vacuumed away. Again, this removal of the offending particles is a great improvement over the prior art, which merely allows the fluid with the particles to be dispersed into the field drainage system, thereby causing problems later. Despite the deleterious consequences of not removing, these prior art techniques are still used by many companies in the industry.

[0052] In fact, by so treating, kneading, overflowing, dissolving, and vacuuming, the paint and other materials of the markings, as well as the harmful chemicals, are physically removed, the underlying surface, i.e., the infill, as well as the fibers of the synthetic turf or field, are cleaned of the previous paint and any foreign matter, are softened to reduce the hardness, and are prepared for a new set of markings for a new game or sport or other activity.

[0053] Now referring specifically to Figure 3 and Figure 4 , which focus on Figure 1The vacuum system 140 shown shows a vacuum frame, generally indicated by reference numeral 141, which supports the components of the vacuum assembly. Also shown are two actuators, generally indicated by reference numeral 142, located at either end of the vacuum system 140, which raise or lower the vacuum device, generally indicated by reference numeral 143, which is fixed thereto. For example, in response to a command from an operator of the vehicle 105, such as through the control panel 124, the vacuum device 143 can be lowered to the surface of the site to draw material thereat through the vacuum pressure. In fact, as described in greater detail below, particularly in connection with Figure 8 the operator can control the positioning of the vacuum device 143 relative to the surface of the site, the turf fibers or blades 181 and the infill 182 therein, as discussed in greater detail in connection with Figure 8 As discussed in greater detail below, this best enables the recovery of the dissolved material delivered to the vacuum device 143, for example, lowering the vacuum device 143 to the level of the hard infill, preferably best "pushing" the water to be delivered to the vacuum port, which is powered by the suction force generated by the suction motor 112, as discussed above.

[0054] It will be appreciated that the vacuum device 143 so lowered should not press too much on the blades 181 and preferably not contact the infill 182 described above. Thus, the vacuum device 143 should be lowered, for example, by the operator just above the infill 182 so as not to damage it by forward movement of the vacuum device 143, as discussed previously, which would create an overflow or dam ahead of it, caused by the large amount of or overflow of water from the deployed plurality of overflow sprinklers 129. The downwardly sprayed overflow water mixes with the accumulated liquid and debris to form the slurry 184.

[0055] As shown in Figure 3 and Figure 4 there is at least one drain hose, generally indicated by reference numeral 144, which connects the sewage drawn by the vacuum device 143, i.e., from the slurry 184 formed, to the recovery tank 111 described above, so that the waste material can be deposited for disposal elsewhere. Two such drain hoses or tubes 144 are shown in these figures. Of course, it will be appreciated that in alternative embodiments, only one drain hose 144 can be required, or more than two can be required. As discussed above, the recovery tank 111, together with the suction motor 112, generates the suction pressure to the vacuum device 143.

[0056] Reference is now made to Figure 5 the underside of the vacuum device 143 described above, which shows a grate, generally indicated by reference numeral 145, having a plurality of discrete vacuum ports or holes, generally indicated by reference numeral 146, through which the sewage flows to the drain hose 144 and the recovery tank 111, as described above.

[0057] With the entire vacuum device 143 lowered to the surface of the venue, Figure 8 in the position shown by the deployment configuration, the suction will collect all the water, chemical cleaner, loose paint and other particulates trapped in the playing surface material, as discussed previously, over time, these particulates both create hazardous conditions and become unsightly, i.e., the aforementioned hardening and shadowing. In other words, this slurry of chemicals, particulates and water 184 is removed.

[0058] With further reference to Figure 5 (and again in conjunction with Figure 8 the discussion), the underside of the vacuum device 143 includes a plurality of channels or grooves along the leading edge, each channel generally indicated by reference numeral 147, whereby as the vacuum device 143 is lowered to the level of the infill and the vehicle 105 is advanced, the slurry of material 184 that has accumulated in front is first moved through the leading edge channels 147 to the vacuum grating 145 and the vacuum holes 146, from which it is removed to the aforementioned recovery tank 111.

[0059] It should be understood that while three such channels 147 are depicted, other configurations are contemplated within the scope of the present invention, so long as the channels 147 provide the necessary drainage for the suction.

[0060] In operation, the Applicant preferably spaces the channels 147 along the leading edge of the grating 145, i.e., the nearest edge in the direction of travel, at a distance of from about 2 inches to about 10 inches, depending on the strength of the suction and other factors as understood in the art. Additional channel 147 spacing or range of spacing includes from about 4 inches to about 8 inches, with the presently most preferred spacing being about 6 inches.

[0061] The depth or height of the channels can also vary as desired, e.g., from about 3 / 8 inch to about 5 / 8 inch, preferably 1 / 4 inch. The width or amplitude of the channels 147 can also vary, e.g., from about 1 / 2 inch to about 1 inch, from about 5 / 8 inch to about 7 / 8 inch, with the presently preferred being 3 / 4 inch.

[0062] In conjunction with all of the drawings herein, it should be understood that various connections are depicted, i.e., the tubes or hoses for the chemicals 127 and water 130 used by the brush 122, which are preferably color coded as understood in the art, e.g., yellow for water, clear for chemicals, black for hydraulic pressure, etc.

[0063] As noted herein, the present invention is preferably driven entirely by hydraulic pressure, thereby improving the reliability and duration of the equipment.

[0064] Also shown is the discharge or suction hose 144, which is connected at one end to the vacuum device 143 and at the other end to the recovery tank 111, with the suction or vacuum device, the aforementioned suction motor 112, powering the suction, as Figure 6 The suction device 112 is shown on top of the recovery tank 111 for storing or recovering the above-mentioned paint and other debris and liquids that are sucked.

[0065] In this way, the present application is a great improvement over the prior art, which does not perform such a recovery and cleaning function, but rather beautifies carpet cleaners, etc., which are best required to pass several times to be equivalent to one pass of the present application, making them very inefficient.

[0066] As discussed, the vacuum holes 146 carry away the sewage with respect to the vacuum device 143. In the preferred embodiment, the top face of the vacuum device 143 is made of a transparent material, such as polycarbonate, generally indicated by reference numeral 149, the transparency of which is shown in Figure 4 from the other side as shown in Figure 5 . In fact, the polycarbonate cover 149 provides a seal for the vacuum, i.e. the "box" inside the vacuum device 143 is subjected to the full suction of the above-mentioned suction device 112 and this suction is transmitted to the above-mentioned vacuum holes 146. As Figure 3 indicated and described with respect to Figure 3 , the air valve generally indicated by reference numeral 148 is connected to the vacuum device 143 and provides the necessary amount of air required.

[0067] Turning now to Figures Figure 6 and Figure 7 , the above-mentioned floor extraction and cleaning system of the present application is shown deployed in the current second preferred embodiment, which is particularly dedicated to the cleaning of paint and other chemicals that are deposited on the floor surface in line but now need to be cleaned. In fact, the line cleaning assembly or device, generally indicated by reference numeral 160 here, is an alternative configuration similar to that shown above, but it is directed to the relevant and critical function during the floor surface cleaning process.

[0068] As mentioned above, as in the first embodiment, this embodiment 200 employs the vehicle 105, the water and chemical sprayer, the recovery tank and most of the other components. As Figure 6 and Figure 7 and Figure 9 indicated, the line cleaning assembly 160 is deployed along one side of the vehicle 105.

[0069] With particular reference to Figure 7 , the line cleaning assembly 160 has at least one support frame, generally indicated by reference numeral 161, as opposed to the above-mentioned triangular configuration shown in the first embodiment, with two brushes, generally indicated by reference numerals 162, in particular 162A and 162B (collectively 162), disposed on the support frame in an aligned or serial configuration.

[0070] As this embodiment is concerned with the narrow section of the floor surface, i.e. the line thereon, this sequential or serial configuration is best suited for this line removal function. It will be appreciated that each brush 162A and 162B (as well as brush 122) is powered by a brush actuator, generally indicated by reference numeral 163.

[0071] As with the previous embodiment, there is a front pre-wiping or chemical sprayer, generally indicated by reference numeral 164, which is deployed first, i.e. in operation, the chemical is sprayed first onto the line to be removed to assist in the removal of the paint on the floor surface. Also shown is an intermediate sprayer, generally indicated by reference numeral 166, which is deployed immediately in front of each brush 162. Finally, there is shown an overflow sprayer, generally indicated by reference numeral 167, which is deployed immediately in front of the vacuum device 143, which, as previously discussed, adds or overflows the aforementioned accumulated liquid and mixed particulate into the liquid slurry to facilitate the vacuum suction.

[0072] As shown, there are two brushes 162 and vacuum assemblies 140 in this embodiment, the vacuum device 143 is connected by a discharge hose 144 to the aforementioned suction device motor 112 at the top of the recovery tank 111, as Figure 6 shown. As previously discussed, the modularity of this design allows for the interconnection of assemblies and functions to be deployed with the configuration of the present invention. As with other embodiments, the operator of the vehicle 105 can control the positioning of the line cleaning assembly 160 and the vacuum device 143 over the desired section of the floor surface through the control panel 124. As previously discussed, one or more actuators 142 are used to raise and lower the vacuum device 143 to the floor surface.

[0073] It will be appreciated that the frame 161 of the line cleaning assembly 160 can be secured to the vehicle 105 in various ways. In this embodiment, the frame 161 and brushes 162, etc. are not directly attached to the vacuum assembly 140 and vacuum device 143, they are secured separately, i.e. bolted or otherwise connected to another portion or side of the vehicle 105, the securing mechanism generally indicated by reference numeral 168, but nonetheless, both are aligned to perform the necessary function, i.e. to suction the paint and other materials from the paint line on the floor and completely eliminate all traces of unwanted paint or debris on the floor surface.

[0074] It will be appreciated that in another embodiment, the various components of the line cleaning assembly 160 are all secured to the aforementioned frame 161, as Figure 8 shown.

[0075] Reference is now made to Figure 8 , which shows the use of Figure 6 and Figure 7The line cleaning assembly 160 shown is configured to perform exemplary operation and process of line cleaning, but it should be understood that the description is also applicable to the first embodiment (and other aspects of the present invention). In particular, as Figure 6 and Figure 7 As shown, vehicle 105 is positioned perpendicular to the portion of the line to be removed in the figure. One or more chemical sprayers 126 / 164 spray a fluid that removes or cleans paint in front of first edge brush 162B (and brush 122 described above), as discussed in more detail above and below.

[0076] After the paint on the lined portion has been treated in this manner, the first and second edge brushes 162A, by scrubbing their bristles and with the aid of a light spray or mist of water from a sprayer 166, remove the paint from the lined portion, i.e., the surface of the synthetic fiber and filler. As previously discussed, the overflow sprayer 167 dissolves the removed paint particles and other debris into a common slurry, which is then vacuumed away by the aforementioned vacuum device 143. In some alternative embodiments, the second brush 162, particularly brush 162B, is followed by a straight brush and then another sprayer 166.

[0077] In particular, the double row of brushes 162 allows the operator or user to position the two brushes over a line, i.e., a painted line on the field surface, and to perform a sweep over that line in a manner that completely removes the paint from that line. Furthermore, by utilizing the aforementioned vacuum device 143, paint particles dispersed by the brushes 162 are sucked up, thereby preventing the harmful effects of capping and other problems caused by the unnecessary accumulation of waste particles within the fibers of the artificial field turf.

[0078] Further references Figure 8 , which illustrates the operation of the present invention at ground or turf level, on the right side of the figure, a chemical sprayer 164 sprays paint remover onto an artificial turf surface, generally designated by the reference numeral 180. As mentioned above, the artificial turf surface is typically comprised of a plurality of artificial blades similar to grass, generally designated by the reference numeral 181. These blades 181 also bend when stepped on, like grass, and otherwise mimic nature.

[0079] Beneath blades 181, just as in nature, there is a hard layer known as infill, generally designated by reference numeral 182. On artificial playing surfaces, this is typically comprised of granulated rubber, again providing a measure of natural feel. Further details of blades 181 and infill 182, as well as the operation of a synthetic playing surface finishing and maintenance system for such artificial surfaces, are discussed in detail above and can also be found in applicant's '617 patent, which is incorporated herein by reference.

[0080] As shown in the figure, the vehicle 105 moves forward ( Figure 8 The advancing line cleaning assembly 160 (right side in FIG. 16) moves the assembly 160 over the painted line and then sprays with the intermediate water sprayer 166 disposed immediately forward of the brush 162B, the bristles generally indicated by reference numeral 183 engage the above-described blades 181, which enhances the cleaning or removal of paint from the blades 181 by the above-described chemical that has been sprayed. As shown, the bristles 183 engage the blades 181 and not the downwardly disposed infill 182, so as not to damage the infill 182. Again, the height of the brush 162 relative to the surface 180 is carefully controlled by operator (or possibly automated) control to clean without causing damage.

[0081] After the scrubbing with the bristles 183 on the brush 162B, the blades 181 of the artificial turf are again sprayed with water by another sprayer 166, both sprayers 166 providing a mist of water. Then, the above-described brush 162A engages the blades 181, the bristles 183 of which likewise engage the surface 180 and the infill 182 to some extent, so as to dislodge any remaining paint or debris that has accumulated on the blades 181 and along the infill 182. As will be appreciated, the removed paint and any other debris that is present has been loosened, some of which falls toward the infill 182.

[0082] After the above-described chemical treatment, water washing, and vigorous brush scrubbing, the turf blades 181 are then rinsed or flooded with a substantial amount of water by the sprayer 167, which forms a pool, mass, or slurry, generally indicated herein by reference numeral 184, as shown. In this process, the water from the flood sprayer 167 mixes with the accumulated particulate to form the slurry 184, which is generally comprised of water, the sprayed chemical, the removed paint, and any other debris on the surface of the field, particularly that which forms the line (and more generally, any debris on the field) that is removed.

[0083] It will be appreciated that this slurry 184 dissolves all of the substances, i.e., creates a mixed solution of all of the above-described substances, which makes the removal of the mixed debris easier, i.e., by vacuum suction. In the preferred embodiment, the amount of water from the flood sprayer 167 is more than twice the amount of the intermediate sprayer 166.

[0084] As Figure 8 shown, the slurry 184 forms immediately behind the brush 162B and builds or collects in front of the above-described vacuum device 143 for collecting the slurry 184. The vacuum device 143 is pressed horizontally downward by the operator, preferably substantially close to but not touching the infill 182, which forms a barrier for the accumulation of the liquid and particulate in the common slurry 184, as shown. Thus, the slurry 184 enters the vacuum device 143 in a particular manner, i.e., through the above-described channel 147 along the base of the vacuum device 143, as Figure 5 shown and described with respect to Figure 5 The detailed description.

[0085] As the slurry 184 is a soluble mixture or collection of water, chemicals and debris, all of which are drawn through the channels 147 and through the grate 145 of the vacuum holes 146 at the bottom of the vacuum device 143, as previously discussed, the effluent is then transported through one or more discharge hoses 144 to the external recovery tank 111.

[0086] As previously discussed, the operator should be careful to lower the vacuum device 143 so as not to damage the blades 181 or the infill 182, for example by applying too much pressure on the surface. By using the vision, the senses and the readings on the control panel 124, the operator can orient the vehicle 105, align the line cleaning assembly 160 along the line to be cleaned and engage the device, i.e. activate the chemical sprayers 126 / 164, the intermediate sprayers 127 / 166, the overflow sprayers 129 / 167, lower or raise the brushes 122 / 162 for proper engagement and lower the vacuum device 143 onto the infill 182 (preferably close to the infill 182) to create the obstacle or blockage required to form the slurry 184. Then, by moving the vehicle 105 and the line cleaning assembly 160 over the painted line, the paint and other material on the blades 181 can be treated and completely removed by the vacuum and collected in the recovery tank 111.

[0087] The raising or lowering of the vacuum device 143 and the brushes 162 is preferably done by respective actuators, for example the aforementioned actuator 142 for raising and lowering the vacuum device and the brush actuator, generally indicated by reference 163. For example, the operator can use the control panel 124 to activate the actuator 163 to raise or lower the brushes 162 in the present embodiment to the appropriate level.

[0088] In this way, the painted lines and other markings on the surface of the site are more completely removed, i.e. not only the line markings are removed, but also the paint material and debris on the lines being removed, as previously discussed, which mitigates the problem of overcoating and others, thus enabling the site to be used for longer even if the races and markings are constantly changing. As previously mentioned, the technology of the present invention allows for the quick and efficient treatment of the entire site, whether it is to collect the general debris on the surface of the site, for example after a large race, or to remove lines for a specific use, thus eliminating the lines to allow replacement with new lines.

[0089] Further, the downward pressure on the fibers or blades 181 must be properly controlled to avoid damage to the playing surface, the details of which are discussed below. While all playing surfaces are different, they are similar in operation, artificial turf typically has blades that are 1 to 1.5 inches high and are securely fixed to a substrate, as shown and described in more detail in Applicant's '617 patent. Artificial turf also has infill 182, which is preferably a rubber material to provide a little elasticity. The infill 182 is also fixed to the substrate, and the blades 181 extend through approximately a half inch of infill 182 material, as shown. Figure 8 The subtleties of these materials and the limitations on their use are known and again set forth in Applicant's '167 patent, which is incorporated herein.

[0090] As noted previously, sports turf managers have enough to worry about. The condition of the playing surface and its appearance need not be one of their concerns. Hydraulic drive synthetic playing surface grooming and now extraction tools or accessories, in combination with the corresponding tractor providing the hydraulic or other drive of the accessories, make creating a safe, gameable, and aesthetically pleasing playing surface a manageable task. For the grounds maintenance personnel, knowing what to do and when to do it is difficult to decipher. And the additional problems caused by the new NFL hardness rules and the need to quickly deploy new markings (completely clear old markings) create even more concerns.

[0091] Reference is now made to the drawings wherein Figure 9 is shown, which combines features of the above-described embodiments and is generally designated by reference numeral 300. As with the other embodiments, a vehicle 105 is used for propulsion. As shown, the above-described playing surface grooming assembly 120 (and all components connected therewith) of the above-described first embodiment for general playing surface cleaning is combined with the above-described line cleaning assembly 160 of the above-described second embodiment for paint line treatment. While it is generally preferred that these embodiments be used separately for more specific uses, it should be understood that this combination of equipment and functionality is also useful, for example, to clean a small or medium-sized playing surface or one with a lot of lines.

[0092] It should be understood that the illustrative embodiment 300 will require some adjustments to make the configuration operable, for example, another discharge hose 144 is needed in this combined system. Other modifications are also needed.

[0093] The exemplary embodiments shown also provide a method that integrates all vacuum suction and extraction functions into one complete and thorough 3-step process. The system addresses issues related to hardening, compaction of infill, fiber entanglement and taping, poor water permeability, dirt and grime contamination, and uneven distribution of infill 182. Thus, exemplary processes are described above and below for operating using the equipment described herein, whether to address a field generally or a portion thereof, such as to clear a line or a logo.

[0094] The first step, the preparation step, is a physical grooming or pre-grooming of the surface 180 in question, such as using the present invention, or the Kromer Co. product known as Synthetic Field conditioning Groomer TM The equipment provided is capable of breaking down, breaking up, and cleaning caked infill, clearing magnetic debris, and then redistributing and leveling the infill. This initial physical grooming or conditioning device provides visual feedback to the operator as to when the field has been prepared and is ready for the second step.

[0095] Of course, it should be understood that this initial preparation step can be performed two or more times, such as depending on the hardness, shadows, and other factors. However, the more general or surface-level grooming processes performed by the applicant with earlier systems such as shown in the prior art do not address the more difficult problems as described in more detail herein.

[0096] After the first step is completed, some loose paint particles and redistributed infill 182 are primarily on top of the surface of the grass blades 181, and if left as placed, would cause the field to appear dark or black in color. But in the hardened areas, the paint is more caked onto the blades 181 and requires further treatment. The second step requires a chemical cleaner to be sprayed onto the painted areas or the hardness areas, i.e., the chemical sprayer 126 / 164, to directly attack the embedded paint and to allow the chemicals to sit for about two minutes, such as to allow the operator to circle back for the third step. Also, the operator can slowly move the vehicle 105 over the surface 180.

[0097] In the third step, the vehicle 105 with the above-described scrubber or brush 122 / 162, at a particular pressure, loosens the embedded paint and other debris for collection with a water mixture of the strong chemical cleaner already deposited. Through the delicate balance of the downward pressure of the brush 122 / 162 and the chemical cleaner / water mist mixture employed, the technology of the present invention loosens these deeply embedded paints and other particles from the field surface for removal, and in particular, loosens the paint adhered to the blades 181 along a given line for line removal.

[0098] As previously discussed, immediately after the brush 122 / 162, the mixture of chemicals, water, paint particles and other debris is vacuumed by the above-described vacuum 143 and drawn into the above-described recovery tank 111 at the rear of the vehicle 105 for disposal, as shown in Figure 3-Figure 5 Figure 6

[0099] While only one such enhanced chemical treatment is usually sufficient, for very hard areas, the entire process can be repeated multiple times.

[0100] Thus, the present invention addresses the increasingly important safety and aesthetic issues caused by paint buildup using prior art and devices such as those currently employed by others in the industry. In addition to the racetrackability, durability and safety attributes, the surface 180 also remains in the best possible aesthetic race-ready condition.

[0101] In the preferred embodiment, as shown in the drawings herein and in Applicant's '617 patent, various aspects of the trimming, painting and cleanup using a given vehicle 105 are accomplished with attached accessories to perform various tasks. As previously discussed, various details regarding trimming and general maintenance are set forth in detail in Applicant's above-identified '617 patent, the entirety of which is again incorporated herein by reference. More details regarding paint and other debris cleanup are described above and below with respect to the current preferred embodiment of the components of the present invention.

[0102] Applicant wishes to point out that with respect to the use of the equipment and components described herein, particularly since these components (e.g., the bristles 183) directly engage the above-described blade 181 with paint and other residue attached thereto and the infill 182 which can have accumulated debris, the operator can judge the use of the above-described brush 122 / 162 and vacuum 143. Thus, the operator needs to know how far these components should travel to properly perform the task, as discussed above in connection with Figure 8 As emphasized, in order to be used properly, the various components are preferably placed above the infill 182.

[0103] For example, a given surface can have recently been cleaned or trimmed relative to a thick surface panel having infill or other issues as described above. Thus, various pressures are applied so that the device can operate properly and, knowing these pressures, the operator can monitor the gauges, such as the above-described control panel 124, to ensure that they are within the operating parameters.

[0104] ​​Applicants have found that most of the operating pressures employed in practicing the present application are between about 20 and about 80 pounds per square inch. For example, an operator can apply about 20 pounds per square inch of pressure on a fairly fresh site surface, i.e., a site surface that has been recently cleaned or dressed and has no fill material buildup.

[0105] Conversely, for difficult site surfaces, an operator can apply about 80 pounds per square inch of pressure, i.e., the operator, through the control panel 124 and corresponding actuators, applies the components to the site surface 180 within this general pressure range when operating the vacuum 143 and / or brushes 122 / 162.

[0106] In the use of these components that are lowered and raised on the site surface 180, a more preferred operating pressure range is about 25 to about 60 pounds per square inch, with the presently most preferred operating range being about 30 to about 50 pounds per square inch.

[0107] Applicants wish to point out that for proper operation, the vacuum 143 must receive sufficient suction power from the above-described suction motor 112 as well as a certain amount of air to properly vacuum the slurry 184. As discussed above, the required vacuum power and air is generally available for use with the vacuum 143 deployed in the first embodiment, where the vacuum 143 is larger and has more passages 147 and more vacuum holes 146 to supply the required air. In other words, the configuration of the first embodiment has sufficient suction and the air required for that suction.

[0108] However, as discussed previously, the smaller vacuum 143 configured for use with the above-described line strip cleaning assembly 160 does not have sufficient vacuum holes 146 nor sufficient air for proper operation. Thus, to supply the required air, Figure 3 The air valve, generally indicated by reference numeral 148, is shown in the middle, secured to the top of the vacuum 143 and connected, i.e., the air valve 148 is connected to the vacuum environment and provides any necessary air for suction, provides sufficient additional air for the vacuum in this embodiment to suction all of the slurry 184, such as by the above-described connection through the polycarbonate cover or top 149. If this air is not added from the air valve 148, the effluent hose 144 can build up with effluent therein and become inoperable.

[0109] It should be understood that the air valve 148 has a range of preferred air levels, e.g., level 1 indicates the least air and level 5 indicates the most air. In operation, the operator must manually set the appropriate level of the air valve 148 for the configuration use and appropriate for the job.

[0110] Of course, it should be understood that in another embodiment of the application, the operator can manipulate this setting through the control panel 124 described above. Further, as the degree of automation increases, this setting can be automatically adjusted during operation, for example, by dynamically measuring the field surface conditions.

[0111] Applicant would like to further point out that the present application is developed using computer aided design and computer aided manufacturing principles, i.e., CAD / CAM, wherein the various components are modularized, as discussed previously. Using CAD / CAM, the components can be precisely laser cut and powder coated / painted, and labeled instructions attached. As understood by those skilled in the art, the modular design of the components and their assemblies creates a high degree of quality, reliability, and ease of repair and maintenance. Preferably, the equipment and technology can be used not only for the synthetic sports field surfaces described above, but also for other indoor and outdoor surfaces, including natural grass.

[0112] The propulsion system in the preferred embodiment is a V-twin Honda GX630, 20.8 hp fin-cooled engine, with a 6-gallon capacity, preferably a 5-gallon main capacity and a 1-gallon reserve capacity, and an aluminum fuel tank with tethered air cap.

[0113] As described above, the equipment and systems employed in the present application preferably include a full hydraulic system without belts or pulleys, thereby greatly increasing reliability. The propulsion pump is preferably a stepless variable speed, bi-directional, axial piston pump design, with a direct coupled in-line configuration with auxiliary accessory pumps.

[0114] In at least one embodiment, the wheel motors include two fixed displacement, bi-directional, high torque rail wheel motors, with a brake rated rear axle capacity of 7250 lbs. The auxiliary pumps described above are positive displacement gear pumps, 6 cm 3 / rev, 5.46 GPM. The embodiment also includes a cooling system for the hydraulics, preferably an aluminum hydraulic fluid heat exchanger, which enhances engine compartment cooling, for the various embodiments shown.

[0115] The fan specification is preferably 12V, 5.4 amp, 280 CFM, with a currently preferred size of 8 inches x 8 inches x 4.5 inches. The hydraulic fluid tank is preferably equipped with sight gauges and internal filters, for example, a 5.4 gallon capacity system.

[0116] With respect to the preferred tires, the front tires 115 are preferably 16 x 17.5-8 low ground pressure 4-ply turf technology. The rear tires 114 are preferably 23 x 10.5-12 low ground pressure 4-ply turf technology. The wheels are preferably variable in forward speed, up to 14 mph, and in reverse speed, 3 mph.

[0117] With respect to the electrical system, the voltage / current is preferably 12V, 20 amp charging, using a 340CCA / 425CA battery. A 12V charger port is available for accessories. The instrument package has many components, including an hour meter, a voltage meter, a paint PSI indicator, and other necessary instruments.

[0118] As previously discussed, to minimize confusion, all wiring harnesses are preferably color coded, i.e., color coded, for ease of maintenance and troubleshooting. As for the electrical connectors, these are preferably commercial soft shell pins and sockets. Because of these improved connectors and components, these quick disconnect couplings can be used with the front end accessories.

[0119] With respect to the various paint, water, chemical tanks, and spray systems, the various details and examples set forth in the Applicant’s above-referenced ‘167 patent, incorporated by reference, can be used as additional templates for implementation and use details, such as the various brushes 122 / 162 and details covering the various different surface 180 and line patterns on which they operate.

[0120] One aspect of the present invention that distinguishes it from all prior art is the details of the brushes 122 / 162 and the liquids applied, including the pressure of the brushes 122 / 166 on the surface, the amount of water and other chemicals applied by the sprayers 126, 128-129, 164, and 166-167, respectively, can be adjusted by the operator (or possibly programmed into an automatic program) to optimally clean, trim, soften, or maintain the surface 180. By using brass adjusters and stainless steel internal components, these connections are more secure and have a longer life.

[0121] In addition to the disclosures in the patents incorporated by reference, the preferred equipment used to implement part of the present invention is the Hydro Ultra Pressure Paint Pump 290PSI 6GPM by Kromer Engineering. This unit includes a built-in storage tank and at least one cup holder. With this preferred paint system, the ultra-high pressure system can save up to 50% of paint in the application phase. This equipment is preferably used for paint clean-up, including a 17-gallon auxiliary tank for paint clean-up solution, or for a second paint color in the application. Other options can also be provided, depending on the desired use.

[0122] With respect to the main recovery tank system 111, the preferred 62.5 or 65-gallon capacity tank can be increased to an optional 104-gallon to accommodate paint, water, chemicals, etc. The tank 111 should be made of durable, corrosion-resistant rotomolded plastic or other robust material. In use, the tank 111 is easily used, with a quick-lock lid on the main tank, a dual filtration (basket strainer, in-line bowl strainer / screen) system, and an in-tank agitation system.

[0123] Further, the apparatus includes an easy to flush sloped sump system with 100% positive drainage, which in Figure 6 is generally shown.

[0124] For cleaning the assembly, the apparatus and system includes a water line flush master tank connected to the inlet selector valve. With these water interconnections, all paint nozzles, paint lines, and paint pumps can be cleaned in approximately 2 minutes, thereby improving the instant system's utility.

[0125] Turning now to the comfort of the driver using the vehicle 105, i.e. ergonomics, there is a large cab or station 107 with a seat 108 that allows for increased clearance of the steering wheel 116, large foot space, and an improved design of the accelerator pedal (not shown). The operator seat 108 can include lumbar and other support and is adjustable - suspension stiffness, seat back angle, armrest height and angle, fore and aft movement, and other features.

[0126] With respect to the necessary lifting during the operation process, e.g. brushes 122 / 162 and vacuum 143, the present invention preferably provides a foot pedal lift assist that reduces the actual force required by 72%. Finally, all controls on the vehicle 105, e.g. on the control panel 124, are clearly labeled using a durable powder coat finish that is specifically process imaged with graphics, can easily read, color coded, and group controls and outlets.

[0127] Due to the built-in modularity and many other advantages in the design and configuration of the apparatus and system set forth and claimed in the present application, the system has a high degree of versatility and a variety of accessory options, custom modifications, and other flexibility.

[0128] As previously discussed, although the particular advantages claimed in the present application relate to greatly improved cleaning and overall maintenance by clearing or extracting previously applied paint, the vehicle 105 is versatile enough to include various refinishing, line edging and clearing, existing paint clearing, and other aspects of the prior art, i.e. the vehicle 105 can be used for the creation and painting of lines on a site surface 180, the maintenance of these lines, and the improved clearing of these lines to start the cycle over again with new paint lines.

[0129] Accordingly, the quick change connection allows for the attachment of a refinishing apparatus, a mixer / leveler, a deflector / magnet, a custom Grooved Double Broom, and a G-Max tow device, which is a proprietary technology for raising and lowering (and locking) the brushes and apparatus to achieve a precise refinishing depth, or set to a float mode for versatility for various site types.

[0130] Of course, all of these operating variables also include operating under a variety of conditions and speed adjustments. Preferably, the floor cleaning system 120 includes an end zone and logo remover, for example, using three 20-inch brushes 122 for a wide scrubbing pattern. The aforementioned line remover or cleaning assembly 160 preferably has two 14-inch brushes 162 for more focused line removal. As previously discussed, the end zone and line remover are preferably equipped with a sprayer for applying the cleaning solution.

[0131] It will be appreciated that the shape and configuration of the corrugations within the vacuum device 143 of the present invention as described may be modified. For example, the size and dimensions of the apertures 146 in the grid 145 may be different than that shown.

[0132] It should also be understood that the water / chemical treatment of the brushes 122 / 162 and the aforementioned sprayers 126, 128-129, 164 and 166-167 prior to vacuuming may be accomplished with alternative configurations, i.e., different brushes, water and chemical nozzles, higher pressures and other improvements, details of which may be found in applicant's '617 patent.

[0133] The technology of the present invention can be used on almost any playing field, even on any turf. Although today's sports fields are made of various synthetic materials, the present invention is also applicable to these materials, including granular rubber.

[0134] In a preferred embodiment, it will be appreciated that the present invention, and in particular the engine that powers vehicle 105, utilizes synthetic oil to lubricate parts, rather than the cheaper oils used in the prior art.

[0135] Because the vehicles and modifications described in this article will be used on prestigious racing surfaces, the potential for oil leaks is high, and traditional oil spills are far more damaging to the surface than synthetic oils, which are easier to clean. This added functionality is key as a customer relations tool for the purchaser of the equipment, the venue owner.

[0136] It should be understood that while the apparatus and techniques shown are for removing paint and debris associated with sporting events, other events, such as concerts, political rallies, and other gatherings, may require similar marking and similar rapid replacement of surfaces.

[0137] With the improved components and techniques of the present invention, these are a major improvement over the prior art, as well as the applicant's own early efforts, to meet the current needs of our sports driven entertainment industry and the limitations of multiple sports in a given venue. The suction or vacuuming of all encountered paint particles, such as on the painted lines to be cleared, is a major improvement over all prior art and changes everything in this industry. With this improvement, the quick reuse of the venue surface and quick relining is possible.

[0138] The above description is intended to be illustrative and not restrictive. Many embodiments of the application will be apparent to those of skill in the art upon reviewing the above description, and it is therefore intended to be within the scope of the following claims, appended hereto. While specific embodiments of, and examples for, the application are described herein for illustrative purposes only, various equivalent modifications are possible within the spirit and scope of the application, as those skilled in the relevant art will recognize and appreciate. As indicated, the applicant does not intend for the application to be limited to the specific embodiments disclosed herein which can be but one way of making and using the application, but rather that the scope of the application includes all modifications and equivalents of the subject matter disclosed and claimed. Accordingly, the scope of the application is defined only by the following claims.

Claims

1. A site surface cleaning device, comprising: a frame having at least one coupling mechanism configured to attach the frame to a vehicle; at least one chemical sprayer secured to a first end of the frame, the first end being an operational front end of the floor cleaning apparatus, the at least one chemical sprayer being configured to spray at least one paint removal chemical onto a floor surface; a plurality of brushes secured to the frame, the plurality of brushes configured to engage the field surface; a plurality of sprinklers secured to the frame, the plurality of sprinklers configured to spray water onto the field surface in advance of each of the plurality of brushes; at least one vacuum device secured to the second end of the frame behind the plurality of brushes and configured to collect and remove particles and liquids from the play surface by vacuum suction; and at least one overflow sprinkler secured to the frame between the at least one vacuum device and the plurality of brushes, the at least one overflow sprinkler configured to deliver overflow water onto the play surface, The overflowing water thereby dissolves the particles into a slurry, which is vacuumed away by the at least one vacuum device.

2. The floor surface cleaning device of claim 1, wherein the floor surface cleaning device is coupled to the front of the vehicle, the vehicle propelling the floor surface cleaning device during operation.

3. The floor surface cleaning device of claim 1, wherein the at least one paint stripper chemical comprises a non-foaming biodegradable detergent.

4. The floor surface cleaning apparatus of claim 1, wherein the plurality of brushes are secured to the frame and include three brushes arranged in a triangular configuration.

5. The floor surface cleaning apparatus of claim 4, wherein each of the plurality of brushes is a brush having a diameter of 20 inches.

6. The floor surface cleaning apparatus of claim 1, wherein the plurality of brushes comprises two brushes arranged in a serial configuration.

7. The floor surface cleaning apparatus of claim 6, wherein each of the plurality of brushes is a brush having a diameter of 14 inches. 8 . The field surface cleaning device according to claim 6 , wherein the field cleaning device cleans paint lines on the field surface.

9. The floor surface cleaning apparatus of claim 6, wherein the plurality of brushes are configured to be attached to a side of the vehicle.

10. The floor surface cleaning apparatus of claim 1, further comprising a control panel secured to the frame and extending to an operator station of the vehicle, whereby an operator can adjust a plurality of operating features via the control panel.

11. The floor surface cleaning apparatus of claim 10 , further comprising at least one actuator configured to lower and raise the plurality of brushes and controlled by the control panel, wherein when lowered, the plurality of brushes and their plurality of bristles engage the floor surface and any paint particles thereon. 12 . The floor surface cleaning device of claim 1 , wherein the plurality of sprinklers are configured to spray water mist onto the floor surface.

13. The floor surface cleaning device of claim 1, wherein the vacuum device has a plurality of vacuum holes along an underside thereof, whereby the plurality of vacuum holes suck up and carry away the liquid slurry.

14. The floor surface cleaning apparatus of claim 13, wherein the vacuum apparatus further comprises a plurality of channels along a front end of the vacuum apparatus, the plurality of channels being configured to connect the liquid slurry to the plurality of vacuum holes, whereby the plurality of channels allow the liquid slurry to flow therethrough to the plurality of vacuum holes.

15. The floor surface cleaning apparatus of claim 1, wherein the at least one vacuum device comprises at least one port configured to connect the vacuum device to a suction source.

16. The floor surface cleaning apparatus of claim 15, wherein the at least one port is connected to a discharge hose at one end, and wherein the discharge hose is connected to the suction source at another end, whereby the liquid slurry and particles therein are removed from the floor surface by suction from the suction source.

17. The floor surface cleaning apparatus of claim 1, wherein the floor surface is artificial.

18. A device for removing lines from a field surface, comprising: a frame having at least one coupling mechanism configured to attach the frame to a vehicle; at least one chemical sprayer secured to a first end of the frame, the first end being an operative front end of the field surface line removal device, the at least one chemical sprayer being configured to spray at least one paint removal chemical onto the field surface; a plurality of brushes secured to the frame, the plurality of brushes configured to engage the playing surface, the plurality of brushes being arranged in series; a plurality of sprinklers secured to the frame, the plurality of sprinklers configured to spray water onto the field surface in advance of each of the plurality of brushes; at least one vacuum device secured to the second end of the frame behind the plurality of brushes and configured to collect and remove particles and liquids from the play surface by vacuum suction; and at least one overflow sprinkler secured to the frame between the at least one vacuum device and the plurality of brushes, the at least one overflow sprinkler configured to deliver overflow water onto the play surface, The overflowing water thereby dissolves the particles into a slurry, which is then vacuumed away by the at least one vacuum device. The paint lines on the field surface are thereby removed by vacuum.

19. A method for cleaning paint lines from a surface of a field, comprising: Attach the line cleaning assembly to the vehicle; aligning the vehicle with the line cleaning assembly over a line of paint designated for removal on a field surface; spraying said lines with a paint-removing chemical; Brush the lines with two brushes arranged in series; flushing the line with water before and after each of the brushes, the final spray being at least twice the amount of the other sprays, to form a slurry, the slurry being a mixture of liquid and particles; and A vacuum device is positioned to collect the slurry, which is vacuumed to a recovery tank.

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