HK40112225A - Spray wand - Google Patents

Description

spray stick

Cross-references to related applications

This application is a partial continuation of U.S. Patent Application No. 17/354,783, filed June 22, 2021, which is a partial continuation of U.S. Patent Application No. 17/124,186, filed December 16, 2020, which claims the benefit of U.S. Provisional Patent Application No. 62/951,376, filed December 20, 2019, and U.S. Provisional Patent Application No. 63/108,597, filed November 2, 2020, both filed with the United States Patent and Trademark Office. All of the foregoing referenced applications are incorporated herein by reference in their entirety.

Technical Field

The present invention relates to a spray stick, and more particularly, to a spray stick for use with solid form of chemicals or chemical agents.

Background Technology

Outdoor cleaning requires the application of large quantities of cleaning agents to large surface areas, such as house sidings, roofs, decks, patios, and cars. The industry-standard solution for such cleaning activities is a liquid-based hose-and-tip product. These products typically contain a bottom reservoir that stores a concentrated liquid chemical solution. The final cleaning solution is created when the hose is attached to the nozzle of the device and water is passed through the hose. The concentrate is drawn into the suction tube and mixed with water passing through the nozzle. The diluted chemicals are then dispensed onto the surface to be cleaned.

Some problems with standard hose end devices are that they tend to be very heavy, bulky, and ergonomically unfriendly. The position where the hose hooks into the device significantly restricts the range of motion during cleaning, and the added weight of the concentrate often requires the user to use both hands while operating the device. Furthermore, flow restrictors are often used to ensure the correct dilution ratio. Using these flow restrictors can drastically reduce the total area of the dilution spray that is reached.

Therefore, there is a need for a lighter hose-end product designed for the best ergonomic outdoor cleaning experience.

Summary of the Invention

The spray stick device of the present invention solves the above-mentioned problems by providing a device that is ergonomically superior to existing hose end products on the market and can be easily held with one hand during operation. The spray stick device of the present invention can continuously dilute concentrated solid chemicals to deliver an output cleaning solution containing insecticidal active ingredients that kill microorganisms, and is registered with the EPA.

The apparatus of this invention enables the proper dilution of solid chemicals to produce an optimal cleaning solution. Ensuring the continuous and accurate dilution of solid chemicals into water is important not only for the product lifespan when cleaning large outdoor surface areas, but also, more importantly, for ensuring the correct dosage of the insecticidal active ingredient (i.e., calcium hypochlorite) when killing microorganisms such as mold. Products supplying insecticidal active ingredients must pass Good Laboratory Practice (GLP) testing and be registered with the Environmental Protection Agency (EPA). This GLP testing requires defining a specific range of insecticidal active ingredient concentrations and testing against the intended microorganisms to ensure the efficacy of the final cleaning solution. The apparatus for delivering the final cleaning solution needs to continuously deliver the appropriate dilution ratio of the insecticidal active ingredient to ensure it is identical to the chemical tested in the GLP test, thus complying with the EPA.

This invention also allows water to pass through solid chemicals, resulting in a greater spray reach from the output stream of the device compared to existing hose-end products on the market.

The device of this invention allows for the connection of a flexible hose, ensuring that the hose does not obstruct the range of motion during cleaning, and the device is lightweight enough to be easily held with one hand during operation. To achieve this lighter weight, the device operates using chemicals with a solid composition. This allows for a smaller overall weight in the device because solid-composed chemicals are more concentrated than their liquid counterparts.

In at least one embodiment, the spray bar includes: a hollow tubular body having an inlet and an outlet; a nozzle mounted on the outlet of the body; and a valve assembly configured to be mounted on the inlet of the body. The valve assembly includes: a housing having an internal space and an inlet conduit for coupling the valve assembly to a fluid source; a sealing piston biased within the inlet conduit toward its sealed position; and a valve core having a column rotatable within the internal space of the housing and a handle extending from the column, the valve core being rotatable between at least one open position corresponding to an open state of the valve assembly and at least one closed position corresponding to a closed state of the valve assembly. When the column is rotated to at least one open position, the sealing piston biased within the inlet conduit is pressed from the sealed position.

In at least one example, as the column rotates to at least one of its open positions, the profile segment of the column presses against a sealing piston offset within the inlet conduit from the sealed position.

The housing may have an input opening from the input conduit to the internal space, and the sealing piston may include a knob that is received by the input opening and extends toward the profile segment of the column.

The profile segment of the column may include at least one groove that aligns with the input opening when the valve core is in at least one closed position, thereby allowing the sealing piston to be in its sealing position.

The profile segment of the column may include at least one input channel, which is aligned with the input opening when the valve core is in at least one open position.

In at least one example, the profile segment of the column includes a cam that aligns with the input opening and presses the sealing piston from the sealing position when the valve core is in at least one open position.

In at least one embodiment, the cam branches at least one input channel.

The sealing piston may include a handle and a sealing cap attached to the front end of the handle, the sealing cap facing the input opening.

The sealing piston may include a grooved knob attached to the front end of the sealing cap.

The grooved knob can have a cross-shaped profile defined by four external grooves.

In use, when the sealing piston, which is biased inside the input conduit, is pressed from the sealed position, the source fluid flows from the input conduit into the input opening along the external groove.

In various non-limiting examples, the sealing cap has a planar annular front surface for sealing the input opening, or a tapered front surface for sealing the input opening.

A helical compression spring can be mounted on the handle, and this helical compression spring is clamped between the cap and the vented retainer inside the engagement inlet conduit.

The spray bar may include a cylinder assembly having a vortex chamber and an elongated container extending along a longitudinal axis, the vortex chamber having a rear end for engaging a front end of a valve assembly.

In at least one example, the vortex chamber includes an opening on its rear side that leads to a protrusion of a raised section, each protrusion having a corresponding outlet window that is radially offset from the longitudinal axis.

The vortex chamber may include a forward-extending inner wall that circumferentially surrounds a raised protrusion and an outlet window to cause the source fluid to be radially and tangentially oriented relative to the longitudinal axis, such that the source fluid flows circumferentially around the longitudinal axis in a tangential vortex manner within the inner wall of the vortex chamber and flows forward along the longitudinal axis.

The housing may have a mixing output opening leading to the vortex chamber and a bypass output opening leading to the main body.

The valve core may have a mixing output channel and a bypass output channel, which are biased and guided in opposite radial directions to align in an alternating sequence with the corresponding mixing output opening and bypass output opening corresponding to the mixing mode and bypass mode of the spray bar as the valve core rotates.

Other applicable areas of the invention will become apparent from the detailed description provided below. It should be understood that while indicating preferred embodiments of the invention, the detailed description and specific examples are intended for illustrative purposes only and are not intended to limit the scope of the invention.

Attached Figure Description

The invention will be more fully understood through a detailed description and accompanying drawings, which are not necessarily drawn to scale, wherein:

Figure 1 is an isometric view of a spray bar with a refill cylinder assembly according to the present invention.

Figure 2 is a side view of the spray bar with the refill cartridge assembly shown in Figure 1.

Figure 3 is a cross-sectional view of a spray bar with a refill cartridge assembly.

Figure 4 shows the refill cylinder assembly.

Figure 5 is a cross-sectional view of the refill cylinder assembly.

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

Figure 7 is an isometric view of the spray nozzle.

Figure 8 is a cross-sectional view of the spray nozzle.

Figure 9 is an isometric view of the cross-section of the spray nozzle.

Figure 10 is an internal view of the spray nozzle.

Figure 11 is an end view of the spray body.

Figure 12 shows the hose and refill connector.

Figure 13 is a cross-sectional view of the hose and refill connector.

Figure 14 shows the vortex chamber.

Figures 15A to 15D show various views of the vortex chamber.

Figures 16A to 16C show various views of the inclined vortex chamber.

Figure 17 is an exploded view of a spray bar with a refill cartridge.

Figure 18 is a side view of a spray bar with an integrated screen and vortex chamber.

Figure 19 is a cross-sectional side view of a spray bar with an integrated screen and vortex chamber.

Figure 20 is a cross-sectional isometric view of a spray bar with a vortex chamber.

Figure 21 is a cross-sectional view of the spray body.

Figure 22 is a side view of a disposable spray stick.

Figure 23 is a cross-sectional side view of the disposable spray stick in Figure 22.

Figure 24 shows the spray orifice.

Figure 25 is a close-up view of the integrated cut-off end/hose end.

Figure 26 shows a spray bar with a car wash nozzle.

Figure 27 is a view of the car wash spray nozzle.

Figure 28 is a side view of the car wash spray nozzle.

Figure 29 shows a spray bar with a rinsing option.

Figure 30 is a cross-sectional view of the spray bar of Figure 29 in the flushing-vortex mode.

Figure 31 is a cross-sectional view of the spray bar of Figure 29 when the hose stop end is suppressed in the flush-vortex mode.

Figure 32 is a cross-sectional view of the spray bar of Figure 29 in the flush-flushing mode.

Figure 33 is a cross-sectional view of the spray bar of Figure 29 when the hose stop end is suppressed in the flush-flushing mode.

Figure 34 shows the flush shut-off valve of Figure 29.

Figure 35 is an external view of the cut-off end/hose end.

Figures 36A, 36B, and 36C are isometric views of a refill cylinder assembly with an external flushing channel.

Figure 37 is an internal view of the refill cylinder assembly shown in Figures 36A, 36B, and 36C.

Figure 38 is an axial view of the refill cylinder assembly shown in Figures 36A, 36B, and 36C.

Figure 39 is an external view of the handle of a spray bar with a refill cartridge and a valve in the cleaning position according to an embodiment of the present invention, the refill cartridge having an external channel.

Figure 40 is a cross-sectional internal view of the handle of a spray bar with a refill cartridge and a valve in the cleaning position according to an embodiment of the present invention, the refill cartridge having an external channel.

Figure 41 is an external view of the handle of a spray bar with a refill cartridge and a valve in the flushing position according to an embodiment of the present invention, the refill cartridge having an external channel.

Figure 42 is a cross-sectional internal view of the handle of a spray bar with a refill cylinder and a valve in the flushing position according to an embodiment of the present invention, the refill cylinder having an external channel.

Figure 43 is a perspective view of the stackable multi-refill cylinder option, with the refill cylinders not attached.

Figure 44 is a perspective view of a stackable multi-refill cylinder option with refill cylinders attached.

Figure 45 shows the insert/refill cylinder adapter.

Figure 46 shows the hose rod handle, in which the insertion/refill tube adapter is housed by the hose rod handle.

Figure 47 shows a refill tube that can be inserted into the insert/refill tube adapter.

Figure 48 shows the hose stick sprayer assembly, illustrating the installed insert/refill cartridge adapter and the interrelationships of the components.

Figure 49 shows the blocking pad added to the spray bar stop/hose end valve.

Figure 50 shows a refill cylinder attached to a vortex chamber, which has an opening for water intake.

Figure 51 shows a cross-section of the refill cylinder of Figure 50 with a snap-fit vortex chamber.

Figure 52 shows a top view of the vortex chamber.

Figure 53 shows a side view of the vortex chamber.

Figure 54 shows an internal view of the vortex chamber.

Figure 55 shows a three-dimensional internal view of the vortex chamber.

Figure 56 is an internal view of a refill cylinder with an enlarged opening and bumps.

Figure 57 shows a top view of the refill cylinder as seen through the larger opening of the refill cylinder.

Figure 58 shows a bottom view of the refill cylinder.

Figure 59 is a cross-sectional view of the refill cylinder, showing the protrusions inside the refill cylinder.

Figure 60 is an external view of the refill cylinder.

Figure 61 is a perspective view of a "nested" refillable tube.

Figure 62 is a perspective view of three nested refill tubes.

Figure 63 is another perspective view of the three nested refill tubes.

Figure 64 is a side view of the three nested refill tubes in Figure 62.

Figure 65 is a view of the three nested refill cylinders of Figure 64 rotated at a certain angle.

Figure 66 is a side view of an improved spray bar according to at least one embodiment.

Figure 67 is a side view of the spray bar in Figure 66.

Figure 68 is an adjacent side view of the spray bar in Figure 66.

Figure 69 is a relative side view of the spray bar in Figure 68.

Figure 70 is a longitudinal view of the spray bar of Figure 66, showing the input end of the spray bar.

Figure 71 is a longitudinal view of the spray bar of Figure 66, opposite to Figure 70, showing the output end of the spray bar.

Figure 72 is a side view of the operating valve assembly of an improved spray bar (as shown in Figure 66) according to at least one embodiment.

Figure 73A is a perspective view of the housing of the valve assembly in Figure 72.

Figure 73B is another perspective view of the housing of the valve assembly in Figure 72.

Figure 74 is an exploded view of the components of the operating valve assembly of Figure 72.

Figure 75 is another perspective view of the housing of the valve assembly in Figure 72.

Figure 76A is a perspective view of the valve core of the operating valve assembly of Figure 72 according to at least one embodiment.

Figure 76B is another perspective view of the valve core of the operating valve assembly of Figure 72 according to at least one embodiment.

Figure 77A is a perspective view of the sealing piston of the operating valve assembly of Figure 72 according to at least one embodiment.

Figure 77B is a perspective view of an alternative sealing piston according to at least one embodiment.

Figure 78A is a side view of the components of the operating valve assembly, used to illustrate the dual-purpose flow.

Figure 78B is an enlarged view of a portion of Figure 78A, used to illustrate the actuation of the sealing piston.

Figure 79 is a perspective view of the output end of the operating valve assembly in Figure 72.

Figure 80 is a perspective view of the output end of the operating valve assembly of Figure 72 according to at least one embodiment, on which the vortex chamber is mounted.

Figure 81 is a perspective view of the tubular body of the spray bar of Figure 66 according to at least one embodiment, the tubular body carrying a nozzle at its front end.

Figure 82 is a perspective view of the valve assembly and cylinder assembly of the spray bar of Figure 66 according to at least one embodiment.

Figure 83 is a perspective view of the cylindrical assembly (separated into a vortex chamber and a container) of Figure 82 according to at least one embodiment.

Figure 84 is a perspective view of the front end of the assembled cylinder assembly as shown in Figure 83.

Detailed Implementation

The following description of embodiments of the present invention is merely exemplary in nature and is not intended to limit the invention, its application, or its uses. The following description is provided by way of example only to provide a permissible disclosure of the invention, but does not limit the scope or substance of the invention.

In one embodiment of the invention, a spray bar 100 is provided. The spray bar 100 includes a spray nozzle 10, a non-disposable spray body 12 shown in the shape of a tube, and a replaceable refill cartridge assembly 14 within the spray body 12. Referring to the accompanying drawings, FIG1 is an isometric view of the spray bar 100 according to the invention. The spray bar 100 includes a non-disposable spray body 12 and a replaceable refill cartridge assembly 14 having a refill cartridge for holding chemicals or chemical preparations in solid form (also referred to herein as solid chemicals). At the shut-off end or hose end 16 of the spray bar 100, a user connects a rubber hose (garden hose) with a rotating or turning hose nut to a hose nut 18 at the hose end 16. The user can open and close the fluid flow using a shut-off valve 20. The shut-off valve 20 is located on the handle 22 of the spray bar 100, which allows the user to, for example, shut off the water at the handle 22 during use and remove the spray body to replace the solid chemicals or cartridge.

Water flows through the refill cylinder assembly 14 in a tangential vortex manner, tumbling over or flowing through the solid chemicals to maximize exposure to them, resulting in a higher concentration of applied chemicals. 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 also be available and are all within the scope of this invention. The nozzle 10 preferably has one or more braking positions, more preferably four braking positions.

Figure 2 is a side view of the spray bar 100 of Figure 1. In Figure 2, an optional molded grip feature 24 is shown on the spray body 12. By having a handle 24 on the spray body 12 instead of extending further down beyond the cut-off end 16, torque on the user's arm is minimized, thus reducing user fatigue. Figure 2 shows the spray bar 100 including the spray body 12. The spray body 12 consists of a hollow tube, preferably a transparent hollow tube, with an angled rod-shaped spray end 26 attached to a spray end selector or nozzle 10. Figure 2 also shows a shut-off valve 20 for controlling the water flow from the hose and a hose nut 18 for connecting to the hose. The spray bar 100 is particularly suitable for cleaning hard outdoor surfaces.

A hollow tube-shaped spray body is configured to house a refill cartridge assembly 14 containing a refill cartridge with solid chemicals. The hollow tube and/or refill cartridge may have indicators or markings to alert the user when the solid chemicals should be replaced to achieve the desired concentration level. The solid chemicals are preferably intended for cleaning, mold removal, or disinfection purposes. Examples of solid chemical forms include, but are not limited to, granules, pills, tablets, or some other forms of solid chemicals. One advantage of solid chemicals is that they last a long time during use; the spray stick is lighter for the end user; there is no water volume or weight during transport due to the solid active ingredient; and the visibility of the solid chemicals allows for observation during use and identification of when replacement is necessary. The spray stick 100 of the present invention preferably contains 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, detergent soda, baking soda, solid surfactants, calcium hypochlorite, sodium hypochlorite, citric acid, sodium sulfate, urea, quaternary ammonium compounds, herbicides, insecticides, pesticides, fertilizers, and combinations thereof. Preferably, the chemical is or is a chemical preparation including calcium hypochlorite. Calcium hypochlorite contains more than 70% active available chlorine and has a long shelf life when stored properly.

Due to the geometry of the spray bar 100, water passes directly through the solid chemicals and exits from the nozzle of the spray bar. The spray bar of the present invention generates higher water pressure, thereby generating a longer spray reach.

The spray wand 100 of this invention is versatile in its range of motion and lighter in weight. Because the spray wand can be used with one hand, and the hose is connected to the handle, it can be easily adjusted to clean under vehicles, under decks, or other hard-to-reach areas. Unlike products that require two hands, the spray wand can be used with one hand, making it easier for the user to raise their arm for greater reach.

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

Figure 4 shows the refill cartridge assembly 14. The refill cartridge assembly consists of a tubular refill cartridge 40 and a vortex chamber 42, the tubular refill cartridge preferably being transparent, and the vortex chamber being snapped into or otherwise attached or secured to the proximal end of the tubular refill cartridge 40. The refill cartridge 40 is hollow but is to be filled to contain solid chemicals. Preferably, the tubular refill cartridge 40 is pre-filled with solid chemicals. Water enters at the proximal end, passes through the vortex chamber 42, tangentially tumbles through or flows over the present solid chemicals, and exits through an orifice 44 at the distal end of the refill cartridge 40.

Figure 5 is a cross-sectional view of the refill cartridge assembly 14. Figure 5 illustrates how the vortex chamber 42 is positioned within the refill cartridge. The vortex chamber 42 is inserted or pushed into the refill cartridge 40 until it touches the bottom on the shoulder 46 of the refill cartridge 40. A fork or tongue 48 extending as part of the vortex chamber 42 provides a one-way snap-fit feature to engage with the refill cartridge 40, thereby preventing removal. It is also conceivable that the vortex chamber can be attached to the refill cartridge using a threaded connection (e.g., with a child-safe ratchet feature). The vortex chamber can also be attached to the refill cartridge by chemical adhesion or welding.

The spray bar 100 generates turbulence and/or cyclone effects in the water flow within the tubular body using the vortex chamber 42, and redirects the water flow through the solid chemicals so that the solid chemicals are not diluted too quickly and reach the chemical concentration required for effectiveness. A refill cartridge is replaced to measure the water flow to achieve proper dilution of the solid chemicals. This is important for certain chemical products (e.g., products used to kill mold).

For users, the advantages of a transparent refill cartridge are that visibility allows them to see the solid chemicals dissolve and also lets them know when to replace the solid chemicals and/or the refill cartridge. The top of the refill cartridge has a sufficiently small hole to prevent beads from clogging the outlet orifice while maintaining a continuous flow of water. Another advantage is that users do not need to come into contact with potentially toxic or concentrated solid chemicals. Screwing/threading the refill cartridge assembly to the handle of the spray bar allows water to pass through the refill cartridge to properly dilute the solid chemicals.

Figure 6 is a close-up view of the spray nozzle 10. The spray nozzle 10 preferably has at least two user-selectable settings: "flow" or "spray". The "flow" setting has a flow orifice 51. The "spray" setting has a spray orifice 53 in the spray nozzle 10. The user can rotate the nozzle to select the spray. It is contemplated that there may be more than two settings; for example, these settings may include a fan-shaped spray setting. In Figure 6, one or more brakes 55 are shown as features to prompt 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 shows how the brakes 55 of the spray nozzle 10 engage with one or more brake pockets 60 (shown in Figure 11) in the spray body to hold the spray nozzle in a rotating position during use.

Figure 9 is an isometric cross-sectional view of the spray nozzle 10. Figure 9 provides another perspective on the interaction of the parts. When the user rotates the spray nozzle 10, the spray nozzle brake 54 bends and engages with the next set of brake pouches 60.

Figure 10 shows the molded brake 54. The brake 54 in the spray nozzle is capable of bending inward and outward to allow the user's desired rotational movement.

Figure 11 shows a matching spray body brake pouch 60, with the spray nozzle brake 54 interacting with it. The number of possible spray nozzle positions can vary. For example, Figure 11 shows four spray nozzle positions. The user can select a spray pattern. When in the selected spray pattern, the molded spray nozzle brake 54 falls into the brake pouch 60 in the spray body 12 and is held in position thereby. It is conceivable that more than two configurations can exist, which may include a fan-shaped spray configuration. Figure 11 also shows a recess 58 where an O-ring will be located.

Figure 12 shows the hose end and refill connector. Figure 12 also shows a close-up view of the threaded attachment 62 between the shut-off valve 20 and the spray body. Figure 12 also shows an O-ring 64 that provides a fluid seal between the spray body and the shut-off valve.

Figure 13 is a cross-sectional view of the connection between the hose end and the refill cylinder. Figure 13 shows the shut-off valve 20 rotated to the closed position. Figure 13 also shows the hose nut 18 attached to the hose nut retainer 66.

Figure 14 illustrates a vortex chamber 42. The vortex chamber 42, with a front side 44 and a rear side 46, creates fluid tumbling within the refill cylinder. Without water vortexing and tumbling, water would pass directly through the refill cylinder, resulting in a lower chemical concentration. Water enters the vortex chamber 42 linearly on the rear side 46. The vortex chamber causes a change of direction, and the fluid exits tangentially. Potential vortex chamber configurations may include one or more tangential channels 48, preferably two or more. Channels 48 can be of various geometries, such as rectangular or spiral. Providing spacing between channels results in greater tangential forces; however, it may or may not result in greater concentrations. The vortex chamber has one or more raised protrusions 50 with fluid outlet windows 52, and the fluid outlet windows can be rectangular, square, circular, or other shapes. A rectangular one is shown. Vortex chambers can have various configurations. Considerations for choosing a configuration include, but are not limited to, suitability for the injection molding process and the cross-sectional flow area that does not restrict fluid flow. Figures 15A to 15D show various views of the vortex chamber, including the illustrated channel 48.

During use, water passes through the vortex chamber, creating eddies or vortices. The vortex chamber helps prevent the chemicals from being released too quickly or reduced too rapidly. The vortex chamber is used to preferably mix water and dissolved chemicals in a uniform ratio.

As described above, the vortex chamber 42 can have alternative configurations, as long as the configuration generates vortices or eddies in the water as it passes through the vortex chamber, it remains within the scope of the invention. For example, water enters as a single stream and generates several streams in one direction to create a vortex or whirlwind effect.

Within the scope of this invention, alternative constructions of the vortex chamber may exist. For example, the vortex chamber may be in the form of an inclined vortex chamber having one or more ramps as protrusions. Figures 16A to 16C show various views of an inclined vortex chamber having one or more ramps 54.

Figure 17 is an exploded view of a spray bar with a refill cartridge.

In another embodiment of the invention, referring to Figures 18 and 19, the spray bar 200 is provided with an integrated screen 260 and a vortex chamber 242, but without a refill cartridge. Figure 18 is a side view of the spray bar 200 with the integrated screen 260 and vortex chamber 242. Similar to the spray bar with a refill cartridge, the spray bar with the integrated screen and vortex chamber operates in the same manner but without a refill cartridge. In this embodiment, the spray bar 200 with the integrated screen 260 and vortex chamber 242 permanently fixes the screen to the spray body 212 and the vortex chamber 242 to the shut-off end 216. The user loads the spray body 212 with solid chemicals and screws the spray body to the shut-off end/hose end 216 to begin use. At the shut-off end/hose end 216, the user connects the rubber hose to the rotating hose nut. The user can open and close the fluid flow using the shut-off valve. Water flows through the cut-off/hose end in a tangential vortex manner, tumbling over the solid chemicals to maximize exposure and thus result in a higher 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 braking positions, more preferably four braking positions.

Figure 19 is a cross-sectional side view of a spray bar with an integrated screen 260 and a vortex chamber 242. In Figure 19, there is no refill cartridge. The vortex chamber is permanently fixed or bonded in place.

Figure 20 is an isometric cross-sectional view of a spray bar 200 with a vortex chamber 242. Figure 20 shows the direction of water flow when water enters the spray bar 200 and passes through the vortex chamber 242.

Figure 21 is a cross-sectional view of the angled rod-shaped spray tip 226. As shown in Figure 21, a set of smaller orifices 270 are molded into the end of the spray body. This function prevents chemicals from moving downwards and clogging a single larger orifice. This function is provided by a series of orifices 270 or a permanent screen.

In another embodiment of the invention, a disposable and non-refillable spray stick 300 is provided. Figure 22 is a side view of the disposable spray stick 300 with a handle 324. The spray stick has an integrated screen 313 and a vortex chamber 342. In this embodiment, the disposable spray stick eliminates the need for a refill cartridge. The disposable spray stick 300 with the integrated screen 313 and vortex chamber 342 permanently secures the screen 313 to the spray body 312 and permanently secures the vortex chamber 342 to the shut-off end. The disposable spray stick 300 is pre-filled with solid chemicals, and the spray body 312 is permanently secured to the shut-off end/hose end with a shut-off valve 320.

At the shut-off/hose end, the user connects the rubber hose to the non-rotating hose nut 318. The user can open and close the fluid flow using the shut-off valve 320. Water flows through the shut-off/hose end and vortex chamber 342 in a tangential vortex manner, tumbling over the solid chemicals to maximize exposure to them, resulting in a higher concentration of applied chemicals. The solid chemical/fluid mixture is dispensed at the distal end of the spray body.

Figure 23 is a cross-sectional side view of the disposable spray bar of Figure 22. The spray bar 300 includes a single spray orifice 315, an integrated screen 313, a non-removable spray body 312 with pre-filled solid chemicals, an integrated vortex chamber 342, and an integrated hose nut 318.

Figure 24 shows the spray orifice 315. Figure 24 shows a single molded orifice for conveying a chemical mixture. The disposable spray bar may optionally include a spray nozzle 210.

Figure 25 is a close-up view of the integrated shut-off/hose-end shut-off valve 320. Figure 25 provides a close-up view of the component integration.

In one embodiment of the invention, a spray bar with a car wash nozzle is provided. Figure 26 shows a spray bar 400 having a car wash nozzle 410 for use with a brush or cloth (e.g., microfiber cloth) and a refill cartridge 430 containing solid chemicals suitable for car washing. The car wash spray nozzle 410 has a large flat contact area (footprint) and preferably has at least two scrubbing modes: a point 440 at one end for accessing narrow spaces and a flat surface 450 on the opposite side. The user wraps the car wash spray nozzle 410 with the microfiber cloth and inserts the loose end into the through-hole 460. The user can cut a hole in the center for fan-shaped spray or allow the fan-shaped spray to wet the microfiber cloth. The car wash spray nozzle 410 preferably has two fan-shaped spray nozzles 470 to provide a wide coverage of water/solid chemical spray when in either scrubbing mode.

Figure 27 shows a car wash spray nozzle 410 with two or more spray nozzles 470. The selection can be fan-shaped, flow-shaped, spray, etc.

Figure 28 is a side view of a car wash spray nozzle 410. In Figure 28, a through-hole 460 is shown for inserting the end of the microfiber cloth therein.

In one embodiment of the invention, as shown in FIG29, a spray bar 500 with a flushing selection feature is provided. As a feature of the spray bar 500, a flushing setting is present inside a refill cartridge 520. As shown, the spray bar 500 has a central channel or tube 530 extending along the length of the spray bar 500, which allows solid chemicals in the refill cartridge 520 to bypass within an outer body 510 for use with the flushing setting. The refill cartridge 520 holds the solid chemicals and is replaceable. At the shut-off/hose end, the user connects a rubber hose to a rotating hose nut. The user can use a shut-off valve to open and close the fluid flow to direct water through or around the central channel or tube 530.

In the first option, water flows through the refill cylinder 520, which has a vortex chamber, in a tangential vortex manner. The water tumbles through the chemicals, maximizing their exposure and resulting in a higher concentration of chemicals applied. 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 flows downwards along the center of the refill cylinder 520, bypassing solid chemicals, and exits from the spray nozzle, thus providing a non-chemical rinsing function.

Figure 30 is a cross-sectional view of the spray bar of Figure 29 in the flushing-vortex mode. The spray bar 500 operates as follows. When the shut-off ball valve 550 is in the position shown in Figure 30, water enters the hole 545 at the center of the shut-off ball valve 550 and is diverted by guiding the water through the annular hole or passage of the single vortex chamber 540.

Figure 31 is a cross-sectional view of the spray bar of Figure 29 in the flush-vortex mode with the hose stop end suppressed. In Figure 31, the hose stop end is suppressed. Figure 31 shows how water enters through a single orifice 545 and exits through an annular orifice or passage 555 to reach the vortex chamber 550 from the stop ball valve 550.

Figure 32 is a cross-sectional view of the spray bar 500 of Figure 29 in the flush-flushing mode. When the ball valve 550 is in the position shown, water enters the annular orifice or passage 555 in the ball valve 550 and is diverted through the central orifice or passage 545, which directs the water to the central flush pipe 530.

Figure 33 is a cross-sectional view of the spray bar with the hose shut-off end suppressed in flush-flushing mode. In this view, the hose shut-off end is suppressed, and it shows how water enters and exits the shut-off ball valve 550.

Figure 34 illustrates a flush shut-off valve 550. As shown in Figure 34, water flows into and out of a passage in the shut-off ball valve. The passage allows flow selection by rotating the ball valve 180 degrees, directing fluid flow to a desired solid chemical or flushing passage. When at a 90-degree orthogonal position, fluid flow stops.

Figure 35 is an external view of the shut-off/hose end. Figure 35 shows how the user can rotate around the valve ball selector 560 to achieve the desired spray function.

In another embodiment of the invention, a refill cartridge assembly for use in a spray bar is provided, wherein the refill cartridge provides rinsing capability to the spray bar. Figures 36A, 36B, and 36C are isometric views of a refill cartridge assembly 600 having one or more external rinsing channels extending along the length of the refill cartridge 610. The refill cartridge 610 can be made of a transparent material so that the contents are visible. As shown, the refill cartridge 610 includes one or more external rinsing channels 620 on the outer wall 615 of the body of the refill cartridge 610 to allow water to pass through and exit along the refill cartridge in the spray body for rinsing. The external rinsing channels 620 can be in the form of recesses or notches formed in the outer wall 615 of the body. The channels extend continuously from one end of the refill cartridge to the other. In a preferred embodiment, the refill cartridge uses two rinsing channels, but more or fewer rinsing channels can also be implemented. The spacing between the rinsing channels can be varied. The number and geometry of the flushing channels should take into account the cross-sectional area to avoid restricting the downward flow of water along the flushing channels during flushing mode, as the flushing channels are used to guide the water flow in flushing mode. The vortex chamber 630 is attached to the proximal end of the refill cylinder 610.

Figure 37 is an internal view of the refill cylinder assembly 600 of Figures 36A, 36B and 36C.

Figure 38 is an axial view of the refill cartridge assembly 600. This view depicts two flushing channels 620 with unobstructed flow paths. The refill cartridge 610, having a vortex chamber 630 (attached to the refill cartridge 610), achieves vortexing and mixing for water vortexing and ensures proper dilution of chemicals in the refill cartridge assembly. The vortex chamber 630 is preferably secured to, snapped into, or screwed into the refill cartridge 610 using child-safe features.

Figure 39 is an external view of the handle 710 of a spray bar 700 with a refill cartridge according to an embodiment of the present invention, and a rotatable valve 720 in the cleaning position, the refill cartridge having an external channel. In this view, the handle is visible, featuring molded, user-selectable "WASH" and "OFF" modes 730. The valve 720 is rotatable such that an arrow on the top of the rotatable valve aligns with the user-selected mode 730. When in the selected mode 730, the valve 720 provides positive user feedback through tactile feedback with the brake 730. In this view, the valve 720 is rotated to the "WASH" position or mode 730. Internally, water is guided from the hose end inlet 740 into the vortex chamber of the refill cartridge.

Figure 40 is an internal view of the handle 710 of a spray bar 700 with a refill cartridge and a rotatable valve 720 in the wash position according to an embodiment of the invention. The refill cartridge has an external passage. In this view, when the valve is rotated to the “WASH” position or mode 730, water is guided from the hose end inlet to the vortex chamber 750 of the refill cartridge 760, as indicated by the arrow. In this mode, water passes through the center of the refill cartridge containing solid chemicals. The refill cartridge screws directly into the handle and is threaded. When the valve 720 is set to the “WASH” mode, the water flow is unrestricted, allowing maximum spray output for the “reach” of the cleaning solution. In the rinse mode, the refill cartridge has sufficient space to allow water to bypass it.

Figure 41 is an external view of the handle 710 of a spray bar 700 with a refill cartridge and a rotatable valve 720 in the rinsing position according to an embodiment of the present invention, the refill cartridge having an external channel. In this view, the handle is visible, featuring molded "RINSE" and "OFF" modes. The valve 720 is rotatable such that an arrow on the top of the rotatable valve aligns with the user-selected mode 730. When in the selected mode, the valve 720 provides positive user feedback through tactile feedback with the brake 730. In this view, the valve 720 is rotated to the "RINSE" position or mode 730. Internally, water is guided from the hose end inlet, bypassing the vortex chamber of the refill cartridge, and flowing around the external rinsing channel of the refill cartridge.

Figure 42 is an internal view of the handle 710 of a spray bar 700 with a refill cartridge according to an embodiment of the present invention, and a rotatable valve 720 in the flushing position, the refill cartridge having an external channel. In this view, the valve 720 is rotated to the "RINSE" position or mode. Internally, water is guided from the hose end inlet 740 as indicated by the arrow, bypassing the internal vortex chamber 750 of the refill cartridge 760, and flowing around the external flushing channel of the refill cartridge.

The spray bar of the present invention can have varying dimensions (including, but not limited to, length). Similarly, the refill cartridges can have varying dimensions (including, but not limited to, length). For example, the refill cartridge can be 1/4, 1/3, 1/2, etc., of the spray bar body, and one or more refill cartridges can be connected, for example, by threaded connections, to extend along the entire length of the spray bar body. Different solid chemicals can be contained in each connected refill cartridge. Figure 43 is a perspective view of a stackable multi-refill cartridge option with the refill cartridges unattached. Figure 44 is a perspective view of a stackable multi-refill cartridge option with the refill cartridges attached. Each refill cartridge can contain its own solid chemical, which can be the same as or different from the other refill cartridges.

In one embodiment of the invention, the spray bar also includes an insertion/refill adapter. The refill adapter is threaded and will be inserted into the handle (cut-off end) of the hose bar.

Figure 45 illustrates an optional insert/refill cartridge adapter. Preferably, the insert/refill cartridge adapter is annular and has both internal and external threads. Figure 45 shows an insert/refill cartridge adapter with standard threads (but custom threads are also possible). The insert/refill adapter provides the ability to use different lock and key constructions for the refill cartridge.

Figure 46 shows a hose rod handle in which an insert/refill cartridge adapter is received by the hose rod handle. The insert/refill cartridge adapter is inserted into the handle at the end of the rod-shaped hose and is configured to receive a mating threaded end of the refill cartridge.

Figure 47 illustrates a refill cartridge that can be inserted into an insert/refill cartridge adapter. In this example, the cartridge shown has a custom thread, and a matching custom thread is required on the corresponding insert/refill cartridge adapter.

Figure 48 shows the hose stick sprayer assembly, illustrating the installed insert/refill cartridge adapter and the interrelationships of the components.

Several advantages exist associated with the spray stick of the present invention. These advantages include, but are not limited to, ergonomic design, ease of refilling, longer-lasting chemicals, greater spray distance and reach, easy visibility of refill/transparency, versatility in range of motion and good metering benefits, improved safety, and lighter weight of solid chemicals for transport and use.

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, allowing the consumer to use the spray wand with one hand during cleaning, rather than requiring two hands. The use of solid chemicals in the spray wand of the present invention makes it lighter than other products that require water as part of their formulated chemicals.

Figure 49 shows a spray bar shut-off/hose end valve 1000 with a blocking pad 1002. The purpose of including the blocking pad is to provide additional protection for fluid shut-off when the valve is in the user-selected "OFF" position. The additional blocking pad reduces the possibility of fluid leakage.

Figure 50 shows a refill cylinder 1050 attached to a vortex chamber having an opening 1052 for water inlet.

Figure 51 shows a cross-section of the refill cylinder 1050 of Figure 50 with snap-fit vortex chamber 1054.

Figure 52 shows a top view of the vortex chamber 1054. The vortex chamber has the ability to be inserted into the refill cylinder.

Figure 53 shows a side view of the vortex chamber 1054.

Figure 54 shows an internal view of the vortex chamber 1054.

Figure 55 is a three-dimensional internal view of the vortex chamber 1054.

Figure 56 is an internal view of the refill cylinder 1050 with an enlarged opening and a protrusion 1060. The protrusion on the top of the refill cylinder is used to lock into a mating part on the vortex chamber.

Figure 57 shows a top view of the refill cylinder 1050 as seen through the larger opening.

Figure 58 shows a bottom view of the vortex chamber 1050.

Figure 59 is a cross-sectional view of the refill cylinder 1050, showing the protrusion 1060 inside the refill cylinder 1050.

Figure 60 is an external view of the refill cylinder 1050.

Figure 61 is a perspective view of the "nested" refill cartridge 1100. The refill cartridge 1100 is more tapered at its bottom end 1102 than at its opposite top end 1104. A recess 1106 is present on the outer surface or outer side 1108 of the refill cartridge 1100, which allows the refill cartridge protrusion to slide downward into and be received within another refill cartridge when more than one refill cartridge is nested together. When the refill cartridges are nested, the recess allows the protrusion to slide further downward. The nesting capability is particularly advantageous for the purpose of storing and transporting refill cartridges, as these refill cartridges occupy less space during bulk transport.

Figure 62 is a perspective view of three nested refill tubes. Although refill tubes 1150, 1154, and 1158 are shown, any number of refill tubes can be nested.

Figure 63 is another perspective view of the nested refill cylinders 1150, 1154 and 1158 of Figure 62.

Figure 64 is a side view of the nested refill cylinders 1150, 1154 and 1158 of Figure 62.

Figure 65 is a view (rotated at an angle) of the nested refill cylinders 1150, 1154 and 1158 of Figure 64, showing recesses 1152, 1156 and 1160 on the outer surface or outer side of the refill cylinders 1150, 1154 and 1158, respectively.

Figures 66 to 84 show various views of an improved spray bar 1200 and its components according to at least one embodiment. As shown in Figures 66 to 69 in an assembled manner, the spray bar 1200 includes a hollow tubular body 1210 generally extending along a longitudinal axis 1202 (Figure 68), an operating valve assembly 1220 mounted on an input end 1212 of the body, a nozzle 1330 mounted on an output end 1214 of the body opposite the valve assembly, and a cylinder assembly 1300 (Figure 84) mounted within the body in the illustrated embodiment.

The operating valve assembly 1220 serves as the input device for the spray bar 1200 and has multiple operating modes depending on the user-selected rotational position of the valve core 1222 relative to the outer valve housing 1240, shown separately in FIG. 74 for illustration. The valve core 1222 has a profile post 1224 that, during assembly, is positioned within a corresponding cylindrical internal space 1242 (FIG. 73A) of the valve housing 1242 and held by a pin 1218 (FIG. 74) pressed into the housing and engaging an external recess 1226 defined by the valve core 1222, while allowing the valve core to rotate. In the illustrated embodiment, the valve core 1222 extends along and rotates about a rotation axis 1204 (FIG. 72, 74), which is not parallel to the longitudinal axis 1202 (FIG. 68, 69, 72) and, in the illustrated embodiment, is perpendicular to the longitudinal axis.

The construction, arrangement, and operation of valve spool 1222 are similar to those of the rotatable valve 720 described above with reference to Figures 39 to 42. Source fluid can enter the distal portion 1230 (Figure 76B) of the profile post 1224 of valve spool 1222 from either of two input channels, which are radially opposite to the axis of rotation 1204 and are nominally referred to herein as mixing input channel 1232 (Figure 74) (related to the inlet cylinder assembly 1300) and bypass input channel 1234 (related to the bypass cylinder assembly 1300).

When the mixing input channel 1232 or the bypass input channel 1234 is guided rearward toward and aligned with the single input opening 1244 (FIG. 73A) that passes through the wall of the valve housing 1240, the source fluid can flow into and along the interior of the profile post 1224 of the valve spool 1222. Therefore, each state corresponds to one of the two open positions of the valve spool and one of the corresponding open states of the valve assembly.

Depending on the rotational position of the valve core 1222 relative to the outer valve housing 1240, the source fluid can exit the valve core 1222 from either of the two output channels. The two output channels (referred to as the mixing output channel 1236 and the bypass output channel 1238) are biased along the rotation axis 1204 between the lever handle 1226 and the distal portion 1230, and are guided in opposite radial directions so that they align in an alternating sequence with corresponding output openings through the wall of the valve housing 1240 as the valve core 1222 rotates, thus corresponding to the mixing and bypass modes of the spray bar 1200. The output openings (referred to as the mixing output opening 1246 and the bypass output opening 1248 (FIG. 73B)) are similarly biased along the rotation axis 1204, but are guided forward in a common radial direction toward the body 1210 and the cartridge assembly 1300. When either the mixing output channel 1236 or the bypass output channel 1238 is guided forward toward and aligned with the corresponding mixing output opening 1246 or bypass output opening 1248, the source fluid can flow forward along and from the interior of the valve core 1222.

The valve core control lever handle 1226 is fixed to the profile post 1224 opposite the distal portion 1230 for manual rotation and selection by the user: whether the flow is closed, directed to the cylinder assembly 1300 for mixing, or directed to bypass the cylinder assembly 1300. Corresponding markings are provided on the valve housing 1240 for user reference.

To provide an improved seal within the valve housing 1240, blocking pads 1250 (Figures 74, 76A-76B) engage with profile posts 1224, each blocking pad residing in a corresponding chord groove 1252 on the outer wall of the post 1224 and held by a post extending radially outward from it. As the valve spool rotates, the respective blocking pads 1250 engaging with the post 1224 travel circumferentially about the axis of rotation 1204. The corresponding chord groove 1252 and its pad 1250 are positioned radially opposite to the mixing output channel 1236 and the bypass output channel 1238 to seal the output openings through the wall of the valve housing 1240. Thus, when the mixing output channel 1236 or the bypass output channel 1238 is guided forward to align with the corresponding mixing output opening 1246 or bypass output opening 1248 selected by the user, the blocking pad 1250 diametrically aligns with and seals the unselected output opening. The lower end or inner end of the internal space of the valve housing 1240 is sealed by an adjacent end plate 1256 (FIG. 72), and when the operating valve assembly 1220 is assembled, the opposite opening 1258 (FIG. 75) of the internal space is sealed by an O-ring 1260 (FIG. 74) and a profile post 1224.

The operating valve assembly 1220 has a reciprocating sealing piston 1270 that improves valve function by preventing unwanted forward flow and leakage when the valve core 1222 is in the closed position corresponding to the closed state of the valve assembly 1220. The piston 1270 prevents source fluid from flowing forward into the input opening 1244 (FIG. 73A) through the wall of the valve housing 1240 when the mixing input channel 1232 and the bypass input channel 1234 are not rearwardly guided toward and aligned with the single input opening 1244. The valve housing 1240 includes a rearwardly extending input conduit 1262 for coupling the valve assembly 1220 and its input opening 1244 to a fluid source (e.g., a soft water pipe). A rotatable hose nut 1264 (FIG. 72) is mounted on the end of the conduit. A vent retainer 1268 (FIG. 78A and 70) with external threads engages internal threads within the end of the conduit and clamps the spring 1272 and the piston 1270 within the conduit.

In the illustrated embodiment, piston 1270 has a cylindrical stem 1274 (FIG. 77A), a sealing cap 1276 attached to the front end of the stem, and a grooved alignment knob 1280 attached to the front end of the sealing cap. The alignment knob 1280 is shown having a cross-shaped profile defined by four external grooves 1282 for flow of source fluid. The cap 1276, extending radially outward from the stem 1274, defines a rearward shoulder through which a spring 1272 is clamped between the cap and a retainer 1268. The spring 1272 is shown as a helical compression spring, which is mounted and clamped onto the stem 1274.

Furthermore, in the illustrated embodiment, referring to housing 1240 (FIG. 75), sealing surface 1254 is defined within conduit 1262 and surrounds input opening 1244 for engaging the front end of sealing cap 1276 via an O-ring 1290 (FIG. 78B) carried by piston 1270 at the front end of sealing cap 1276 when piston 1270 is in its front sealing position. Spring 1272 is compressed during assembly, continuously biasing piston 1270 toward the front sealing position to move cap 1276 toward input opening 1244 and sealing surface 1254.

In at least one embodiment, the sealing cap 1276 (FIG. 77A) has a planar annular front surface 1284 and a forward-extending peripheral lip 1286 surrounding the front surface to receive an O-ring 1290. In such an embodiment, correspondingly, the sealing surface 1254 (FIG. 75) is planar and annular. In at least one other embodiment, an alternative sealing cap (FIG. 77B) has a truncated conical front surface that tapers radially inward toward the alignment knob 1280, defining a notch in the front surface to receive the O-ring 1290.

Figure 78A shows the relative arrangement of the valve core 1222 and sealing piston 1270 in the assembly without the valve housing (Figure 72). A grooved alignment knob 1280 is received by an input opening 1244 and extends toward the distal profile portion 1230 of the valve core 1222, which has two diametrically opposed and decreasing diametrically smaller regions (shown as flat chord grooves 1266), both adjacent to the mixing input channel 1232 and the bypass input channel 1234. When either chord groove 1266 is guided toward the input opening 1244, corresponding to the closed state of the operating valve assembly 1220, the biased sealing piston 1270 is fully forward-positioned in the sealing position.

As the valve spool 1222 rotates from either closed position, the piston 1270 is pressed rearward from the sealed position as either chord groove 1266 moves from alignment with the alignment knob 1280. When either the mixing input channel 1232 or the bypass input channel 1234 is directed toward the input opening 1244 (corresponding to the mixing and bypass states), the biased sealing piston 1270 is pressed rearward from the sealed position and held, thereby opening the valve to allow source fluid to enter. A corresponding cam 1288 (FIG. 78B) is positioned along the outer edge of the distal portion 1230 of the profile post 1224 in the opening of each of the mixing input channel 1232 and the bypass input channel 1234, thereby overcoming the spring force to press and hold the piston 1270 rearward from the sealed position. The front surface of the alignment knob 1280 is concave to smoothly engage either cam as the valve spool 1222 rotates. Each cam 1288 branches its corresponding input channel 1232 or 1234.

When the source fluid flows from the hose or other source, the fluid enters the rearwardly extending conduit 1262 through the vents (Fig. 70) of the retainer 1268, passes through the unpositioned seal of the piston 1270, and along the external groove 1282 of the alignment knob 1280 into the aligned mixing input channel 1232 or bypass input channel 1234.

Source fluid entering valve spool 1222 in either open position of valve assembly 1220 (refer to the rearward-guided mixing input channel 1232 or bypass input channel 1234) travels along the interior of profile post 1224 and exits valve spool 1222 through the forward-guided mixing output channel 1236 or bypass output channel 1238, respectively. From there, the flowing fluid travels through mixing output opening 1246 or bypass output opening 1248 (Figures 73B and 79), thereby exiting valve assembly 1220.

The operating valve assembly 1220 serves as the input device for the spray bar 1200 and as a coupling structure for the tubular body 1210 and any of the cylindrical assemblies therein (shown individually in Figures 81 and 83, respectively). Each is individually connected to the front end of the valve assembly 1220 to complete the spray bar 1200. The tubular body 1210 (carrying the nozzle 1330 at its front output end 1214) has an internally threaded orifice 1216 at its rear end 1212 for mounting and engaging with the front end of the valve assembly 1220, which has a forward-extending externally threaded outer mounting cylinder 1292 (Figure 72). When assembled, an O-ring 1278 (Figure 72) received in an external recess 1279 (Figure 73A) at the rear end of the mounting cylinder 1292 seals against the smooth inner wall of the rear end of the orifice 1216 of the tubular body 1210. Without a cartridge assembly within the tubular body 1210, the spray bar 1200 can be used in either a mixing or bypass mode to dispense source fluid from the nozzle.

The cylindrical assembly 1300 includes an elongated container 1302 and a rear vortex chamber 1310 (shown as separate in FIG. 83). In the illustrated embodiment, the front end of the vortex chamber 1310 is received in the rear end of the container 1302, and radially outwardly extending protrusions 1312 on the exterior of the vortex chamber 1310 engage with corresponding slots 1314 defined by the container to ensure their engagement.

In Figure 82, the cylinder assembly 1300 is shown assembled and connected to the front end of the valve assembly 1220. The vortex chamber 1300 has an externally threaded port 1320 (Figure 83) at its rear end for engaging the front end of the valve assembly 1220, which has a corresponding mounting port 1294 (Figure 79) concentric with and within the mounting cylinder 1292. For ease of illustration, the vortex chamber 1310 is shown in Figure 80 mounted on the valve assembly 1220 without the container and tubular body. Figure 80 shows the tangential source fluid flow 1206 within the vortex chamber as it flows out from the mixing outlet 1246 (Figure 79), and the forward source fluid flow (Figures 80, 82) as the fluid flows via the bypass outlet 1248 (e.g., along the external flushing channel 1316, which extends longitudinally along the exterior of the container 1302).

The function and structure of the vortex chamber have been described previously, for example, with reference to at least Figure 14 and vortex chamber 42. Similarly, the vortex chamber 1310 of Figures 80 and 83 includes an opening 1318 (Figure 83) on its rear side through which the source fluid from the mixing output opening 1246 enters a corresponding tangential channel 48 defined by a forward-extending protrusion 50 and a corresponding outlet window 52. During use, the source fluid passes through the vortex chamber 1310 and generates vortices or eddies, resulting in the mixing and release of soluble contents within the container. The mixture then exits the container from the front end opposite the vortex chamber 1310 via an outlet port 56 (Figure 84). The container is capable of holding chemicals or chemical preparations in solid form, also referred to herein as solid chemicals, as described above.

As shown in Figures 80 and 14, each of the plurality of protrusions 50 has a corresponding outlet window 48 radially offset from the longitudinal axis 1202 (Figures 79 to 80). Each protrusion 50 defines a corresponding tangential channel 48 radially offset from the longitudinal axis 1202 and opens at the corresponding outlet window 48 to guide source fluid therefrom. The protrusions 50 and outlet windows 48 are circumferentially surrounded by a forward-extending inner wall 1228 of the vortex chamber 1310. The inner wall 1228 is generally cylindrical, thus having a central axis concentric with the longitudinal axis 1202 of the assembled spray bar. Source fluid from the mixing output opening 1246 aligned with the longitudinal axis 1202 enters the vortex chamber and flows through the outlet window, thereby turning radially and tangentially relative to the longitudinal axis 1201, such that the source fluid 1206 flows circumferentially around the longitudinal axis 1202 in a tangential vortex manner within the inner wall 1228 of the vortex chamber 1310 and flows forward along the longitudinal axis.

Similar to spray nozzle 10 (FIG. 6), spray nozzle 1330 of FIG. 66-71 has a plurality of outlet orifices corresponding to a spray pattern selectable by the user for discharging the source fluid in bypass mode or discharging the mixed fluid in mixing mode. In the illustrated embodiment, spray nozzle 1330 includes a flow orifice 1332 for maximum flow and orifices 1334 and 1336 having corresponding spray patterns in use (non-limiting examples of which include expanding cones, fan shapes, mists, and collimated jets). Brake 55 is characterized by prompting the user and holding the spray nozzle in such a position when rotated and registered to an index position corresponding to the various orifices.

The spray bar 1200 incorporates advantageous ergonomic features. The tubular body 1210 has spaced-apart circumferential ridges 1340 (FIG. 69) distributed along its exterior (e.g., near the input end 1210 and output end 1214 in the illustrated embodiment) to facilitate operation of the spray bar 1200 along the body at either end. While various nozzle configurations may vary, the nozzle 1330 is generally guided along a spray axis 1342 that extends at an acute angle relative to a forward direction 1244 along the longitudinal axis. Therefore, the user can comfortably operate the spray bar and guide the spray from the nozzle 1330 without excessive wrist stretching and bending.

The features shown in Figures 66 through 84 are similar to those shown in one or more of Figures 1 through 65, and benefit from their description. Where neither are they illustrated nor described to the contrary, all descriptions should be considered cumulative. In at least some embodiments, all features described with reference to any embodiment of the accompanying drawings will be considered as part of any and all other possible embodiments.

Therefore, those skilled in the art will readily understand that the present invention has broad applicability and utility. Various embodiments and adaptations of the invention, as well as numerous variations, modifications, and equivalent arrangements, will be apparent or reasonably expected from the invention and its foregoing description, without departing from the spirit or scope of the invention. Therefore, although the invention has been described in detail herein with respect to its preferred embodiments, it should be understood that this disclosure is merely illustrative and exemplary, and is solely for the purpose of providing a complete and sufficient disclosure of the invention. The foregoing disclosure is not intended or should not be construed as limiting the invention or otherwise excluding any such other embodiments, adaptations, variations, modifications, and equivalent arrangements.

Claims (20)

1. A spray stick, comprising: A hollow tubular body, the hollow tubular body having an input end and an output end; A nozzle, which is mounted on the output end of the main body; A valve assembly configured to mount the input end of the body, the valve assembly comprising: A housing having an internal space and an input conduit for coupling the valve assembly to a fluid source; A sealing piston, wherein the sealing piston is biased within the input conduit toward its sealing position; and A valve core having a rotatable post within the interior space of the housing and a handle extending from the post, the valve core being rotatable between at least one open position corresponding to an open state of the valve assembly and at least one closed position corresponding to a closed state of the valve assembly; When the column is rotated to at least one of its open positions, a sealing piston biased within the input conduit is pressed from the sealed position. 2. The spray bar of claim 1, wherein, when the column is rotated to at least one of its open positions, the profile segment of the column presses against a sealing piston offset within the input conduit from the sealed position. 3. The spray bar of claim 2, wherein the housing has an input opening from the input conduit to the interior space, and wherein the sealing piston includes a knob received by the input opening and extending toward the profile segment of the post. 4. The spray bar according to claim 3, wherein the outline segment of the column comprises: At least one groove, which aligns with the input opening when the valve core is in the at least one closed position, thereby allowing the sealing piston to be in its sealing position; and At least one input channel, which is aligned with the input opening when the valve core is in the at least one open position. 5. The spray bar of claim 4, wherein the profile segment of the column includes a cam, which aligns with the input opening and presses the sealing piston from the sealing position when the valve core is in the at least one open position. 6. The spray bar of claim 5, wherein the cam branches the at least one input channel. 7. The spray bar according to claim 1, wherein: The housing has an input opening from the input conduit to the cylindrical internal space; and The sealing piston includes a handle and a sealing cap attached to the front end of the handle, the sealing cap facing the input opening. 8. The spray bar of claim 7, wherein the sealing piston includes a grooved knob attached to the front end of the sealing cap. 9. The spray bar of claim 8, wherein the grooved knob has a cross-shaped profile defined by four external grooves. 10. The spray bar of claim 8, wherein the grooved knob includes an external groove for source fluid to flow from the input conduit into the input opening when a sealing piston biased within the input conduit is pressed from the sealed position. 11. The spray bar of claim 7, wherein the sealing cap has a planar annular front surface for sealing the input opening. 12. The spray bar of claim 7, wherein the sealing cap has a tapered front surface for sealing the input opening. 13. The spray bar according to claim 7, further comprising a helical compression spring mounted on the handle. 14. The spray bar of claim 13, wherein the spring is clamped between the cap and a venting retainer that engages the interior of the inlet conduit. 15. The spray bar according to claim 1, wherein: The housing has an input opening from the input conduit to the cylindrical internal space; The valve core is at least partially rotatable about the axis of rotation; The valve assembly includes a first blocking pad and a second blocking pad; and The column includes: At the distal end, when the sealing piston, which is biased within the input conduit, is pressed from the sealed position, the source fluid can enter through the distal end from the input opening; A first output channel and a radially opposite first groove, the first blocking member being held within the first groove; and The second output channel and the radially opposite second groove, with the second blocking member held within the second groove. The first output channel and the second output channel are offset along the rotation axis and guided in opposite radial directions. 16. The spray bar of claim 1, further comprising a cylinder assembly including a vortex chamber and an elongated container extending along a longitudinal axis, the vortex chamber having a rear end for engaging a front end of the valve assembly. 17. The spray bar of claim 16, wherein the vortex chamber includes an opening located at its rear side, the opening opening leading to a protrusion of a raised portion, each protrusion having a corresponding outlet window, the outlet window being radially offset from the longitudinal axis. 18. The spray bar of claim 16, wherein the vortex chamber includes a forward-extending inner wall circumferentially surrounding a raised protrusion and an outlet window to radially and tangentially deflect the source fluid relative to a longitudinal axis, such that the source fluid flows circumferentially around the longitudinal axis in a tangential vortex manner within the inner wall of the vortex chamber and flows forward along the longitudinal axis. 19. The spray bar of claim 16, wherein the housing has a mixing output opening leading to the vortex chamber and a bypass output opening leading to the body. 20. The spray bar according to claim 19, wherein: The valve core is at least partially rotatable about the axis of rotation; The valve core has a mixed output channel and a bypass output channel; The bypass output channel is offset from the hybrid output channel along the rotation axis; The mixing output channel and the bypass output channel are guided in opposite radial directions to align in an alternating sequence with the corresponding mixing output opening and bypass output opening corresponding to the mixing mode and bypass mode of the spray bar as the valve core rotates.