Abstract: A quick color change powder coating system has a powder supply, a powder pump that receives powder from the powder supply through a suction pick-up tube, a spray gun and a powder hose that connects the pump to the gun. The apparatus includes a purge air switch assembly and a first air source that provides air at purge pressure to a first inlet of the purge air switch assembly. A second air source provides flow rate air to a first pump inlet and atomizing air to a second inlet of the pump via a purge air switch assembly. Powder is drawn up the tube and into the pump by suction produced by flow rate air into the pump. A purge inlet is associated with the powder inlet to the pump. The purge air switch assembly operates in response to a purge control signal to connect purge air to the atomizing inlet at the pump and to the pump's purge inlet; whereby the pump, hose and gun can be purged at the same time.

Abstract: In a portable foam fire extinguisher with pressurized foam stabilization, including a container for the fire extinguishing medium, a pressurized gas bottle in communication with the container and a fire extinguisher gun connected to the container by a hose for supplying the fire extinguishing medium to the fire extinguisher gun, a mixing device is connected, by way of a pressure hose, to the pressurized gas bottle for admixing pressurized gas to the flow of the fire extinguishing medium to the fire extinguisher gun to provide therein pressurized gas bubbles, which expand when the mixture is discharged from the gun thereby accelerating the flow from the gun while forming a foam which adheres to the surfaces covered thereby.

Abstract: An ejector is provided with an Interior surface wetting device for introducing a cleaning liquid into a suction chamber of the ejector to form a thin wall of the cleaning liquid covering an interior surface of the ejector. The interior surface wetting device includes a cleaning liquid inlet opening to be fluidly connected to a source of cleaning liquid and a cleaning liquid outlet opening for introducing the cleaning liquid into a suction chamber The wetting device may be in the form of a pipe which extends from the outside of the ejector into the suction chamber to supply a cleaning liquid to a desired portion in the suction chamber.

Abstract: A chemical aspiration sprayer head includes a carrier channel having an inlet, an outlet through which the carrier fluid exits, and an expansion chamber in between the inlet and outlet, a chemical supply channel in flow communication with the expansion chamber of the carrier channel through an aspiration opening, and a bleed line extending from the chemical supply channel between the aspiration opening and the liquid chemical, the bleed line connecting the chemical supply channel in flow communication to ambient air. A control valve assembly is seated in the sprayer head to simultaneously engage the carrier channel and the bleed line and with the carrier channel open, selectively open and close the bleed line to selectively permit ambient air to be drawn into the chemical supply channel in response to the aspiration flow produced by the flow of carrier fluid.

Abstract: A hydraulic cleaning unit comprising a high pressure pump (1) arranged to feed a service lance via a hose (10), the pump delivery conduit opening to the outside via a stub shaped as the male part of a usual rotatable quick connect coupling.

Abstract: There is disclosed a sprayer apparatus for selectively spraying or dispensing multiple fluid components. The apparatus comprises a housing having a first inlet and an first outlet, the first housing inlet being adapted for attachment to a garden hose, the first housing outlet being in fluid communication with the first housing inlet; and an insert member having a first inlet for receiving fluid and a first outlet for dispensing fluid therefrom, the first insert inlet being in fluid communication with the first insert outlet through a passage defined by the insert member, the insert member being mateable with the housing so that the first housing outlet mates with the first insert inlet so that a fluid can flow from the first housing inlet to the first insert outlet. A method of spraying a fluid is also disclosed.

Abstract: The invention includes a first dispenser for providing a first dilute concentrate of a use solution in a bottle. This bottle is then used in a portable delivery/dilution device which provides for a second level of concentration of the use solution. The bottles in which the solution is placed has both a vertical and horizontal lockout. The horizontal lockout is useful in making certain the right bottles are utilized with each dispenser and the vertical lockouts are useful in guiding the bottle upwards as the first concentration of liquid is placed in the bottle. The portable delivery/dilution system is easily portable, easily filled with water which can be easily poured from a system after use. The battery is rechargeable and can be used in most any application where spraying is desired. First and second timers activate first and second indicators to notify the user sufficient use solution has been dispensed.

Abstract: A device for injecting liquid chemical solutions into the flow of a lawn sprinkler system. The device allows the user to easily attach and remove chemical jars without the risk of losing the prime on the pump.

Abstract: A sudser unit having an entry port, discharge port, and a fluid conduit. The discharge port and fluid conduit extend along a common longitudinal axis, and the entry port extends along a longitudinal axis that intersects the longitudinal axis of the discharge port and fluid conduit at an oblique angle. A water supply, such as a hose, is operably connected to the entry port. A converging nozzle having an opening of smaller diameter than that of the entry port is attached to the discharge port, and a detergent reservoir is attached to the fluid conduit. A valve is disposed between the reservoir and fluid conduit. A valve is disposed between the reservoir and fluid conduit to permit selective mixing of the water and detergent, and selective metering of the mixed composition.

Abstract: A liquid sprayer with two side-by-side containers, an interconnecting bridge, and a nozzle insert positioned interiorly of the bridge. Alternatively, a two container piggyback liquid sprayer, a button actuator and a nozzle insert positioned interiorly of the button. One container is for product such as paint, etc., and the other container contains propellant. Very high product/propellant ratios are obtained. An intermediate portion of the nozzle insert has a venturi constriction with an internal propellant outlet orifice. Two product channels transverse to the nozzle insert longitudinal axis overlap the internal outlet orifice by approximately one-half. An outer frustoconical surface surrounds the internal venturi constriction outlet. An expansion chamber diameter is greater than the diameter of both the venturi constriction outlet orifice and the outer frustoconical surface adjacent this orifice.

Abstract: The present invention provides a nozzle capable of easily removing an aspiration object (residual solidified object) and an aspirator equipped with such a nozzle. This nozzle is connected to the aspirator and is used to aspirate the aspiration object. The nozzle comprises: a nozzle body including an opening, which can be opposed to a surface with the residual aspiration object, and a suction port for aspirating the aspiration object; and a liquid injection mechanism, which is provided at the nozzle body, for ejecting liquid toward the aspiration object.

Abstract: A vehicle washing device comprised of a hollow tube having an open first end, a closed second end, and an intermediate extent therebetween. The closed second end has a brush theresecured. A plurality of jet spray nozzles couple with the intermediate extent of the hollow first section. Contained in the device is a Y-shaped connector having an open first end coupled with the open second end of the hollow tube. The connector has an open second end with an on/off valve secured therein. An open third end has an on/off valve secured therein. The open second end is adapted to be secured to a water hose with the on/off valve selectively allowing water therethrough. Also in the device is a soap container having an extension integral therewith. The extension couples with the open third end of the Y-shaped connector. The soap container holds liquid soap therein.

Abstract: The paint spray gun includes an upper passageway for receiving gravity fed paint from an upper paint cup and a lower passageway for receiving suction fed paint from a lower paint cup or pressure fed paint from a remote pressurized paint tank via a hose. Plugs are provided to block the upper or lower passageway when the corresponding other passageway is being used.

Abstract: Apparatus for irrigating wounds in which a housing contains a water filter and an anti-biotic, connected between a water supply and a hand spray unit, with the housing containing a hand operated valve for directing the water from the water supply through either the anti-biotic and filter or directly to the hand spray unit. A water temperature display is also included in the housing.

Abstract: An injection spraying system includes a container having a compartment configured to hold a first fluid. A valve body is removably coupled with the container and includes a mixing chamber, an inlet passageway configured to deliver a second fluid to the mixing chamber, a discharge passageway extending from the mixing chamber, a stem compartment communicating with the mixing chamber through a control orifice, and a transition passageway in fluid communication with the stem compartment. Movably disposed within the stem compartment is a metering stem having a tapered nose configured to selectively engage the control orifice. An adjustment knob is mounted to the metering stem such that rotation of the adjustment knob selectively advances and retracts the metering stem within the chamber of the meter tube. A siphoning tube has one end disposed within the compartment of the container and an opposing end in fluid communication with the transition passageway.

Abstract: The present invention relates to a high pressure cleaning device having suds cleaning efficacy comprising a control body, containing a Venturi tube seat at the interior thereof, connected to the output of a pump, one side of the body being an inlet for the feeding of detergent and the other side being connected to a high pressurized air output pipe such that the water stream and the detergent are mixed and formed into suds flowing out from an water outlet of the body to the outside for cleaning purpose, characterized in that a bending opening is provided to the middle section of the of the body connected to the inlet and outlet water passage, and the opening edge of the bending opening, corresponding to the lateral side of the body, a pressure-adjusting device is provided and a plug shaft is inserted at the bending opening and in combination with the conic shape end of the shaft body and a press board mounted at the bottom end of the plug shaft to resist the pressure change of the pressure within the interior

Abstract: An apparatus for dissolving and dispensing liquid dissolvable material includes a container having a mixing chamber defined therein. The apparatus also includes a body removably secured to an upper portion of the container. The body has a fluid inlet, a first fluid outlet, a second fluid outlet, and a central passage defined therein. The central passage is in fluid communication with each of the fluid inlet, the first fluid outlet, and the second fluid outlet. The central passage is also in fluid communication with the mixing chamber such that each of the fluid inlet, the first fluid outlet, and the second fluid outlet is in fluid communication with the mixing chamber. Moreover, the apparatus includes a cap secured to the first fluid outlet of the body so as to prevent fluid from advancing through the first fluid outlet. Yet further, the apparatus includes a sprinkler assembly secured to the second fluid outlet of the body.

Abstract: The invention includes a first dispenser for providing a first dilute concentrate of a use solution in a bottle. This bottle is then used in a portable delivery/dilution device which provides for a second level of concentration of the use solution. The bottles in which the solution is placed has both a vertical and horizontal lockout. The horizontal lockout is useful in making certain the right bottles are utilized with each dispenser and the vertical lockouts are useful in guiding the bottle upwards as the first concentration of liquid is placed in the bottle. The portable delivery/dilution system is easily portable, easily filled with water which can be easily poured from a system after use. The battery is rechargeable and can be used in most any application where spraying is desired.

Abstract: Apparatus and method for in-line inducting additive into a fire fighting flow line before the pump, including automatic regulating of water flow.

Abstract: A portable vacuum cleaner for attaching to a can of compressed gas having an output for creating a suction. The cleaner includes a body, a nozzle attached to one end of the body, and a receptacle attached to the other end of the body. The body includes a cap for attaching to the can of compressed gas, and which has a throughbore. The body further includes an external tube that has an intermediate portion, a forward portion, and a rear portion. The receptacle includes a tube and an air permeable bag. The body further includes an internal tube, a valve, and a trigger, which when pressed, opens the valve which allows compressed gas in the can of compressed gas to exit through its output and flow through the internal tube into the rear portion of the external tube and thereby create a suction in the external tube which causes dirt to be drawn through the nozzle, through the external tube, through the tube of the receptacle, and be captured in the air permeable bag.

Abstract: A liquid sprayer with two side-by-side containers, an interconnecting bridge, and a nozzle insert positioned interiorly of the bridge. Alternatively, a two container piggyback liquid sprayer, a button actuator and a nozzle insert positioned interiorly of the button. One container is for product such as paint, etc., and the other container contains propellant. Very high product/propellant ratios are obtained. An intermediate portion of the nozzle insert has a venturi constriction with an internal propellant outlet orifice. Two product channels transverse to the nozzle insert longitudinal axis overlap the internal outlet orifice by approximately one-half. An outer frustoconical surface surrounds the internal venturi constriction outlet. An expansion chamber diameter is greater than the diameter of both the venturi constriction outlet orifice and the outer frustoconical surface adjacent this orifice.

Abstract: A portable drywall texture sprayer includes a generally cylindrical tank filled with fluid drywall material, a tool connected to the tank through a set of hoses or lines, and an air supply connected to the tank. The set of hoses or lines includes a material line and a control line. The material line is connected between the tank and the tool such that there is material flow communication therebetween. The control line is connected between the tank and the tool such that there is air flow communication therebetween. An air tube is mounted within the tank and connected to the control line such that there is air flow communication therebetween. An air duct connects the air tube and the air supply such that there is air flow communication therebetween. The sprayer also includes a control orifice on the tool for controlling the air pressure within the tank.

Abstract: A liquid sprayer with two side-by-side containers, an interconnecting bridge, and a nozzle insert positioned interiorly of the bridge. Alternatively, a two container piggyback liquid sprayer, a button actuator and a nozzle insert positioned interiorly of the button. One container is for product such as paint, etc., and the other container contains propellant. Very high product/propellant ratios are obtained. An intermediate portion of the nozzle insert has a venturi constriction with an internal propellant outlet orifice. Two product channels transverse to the nozzle insert longitudinal axis overlap the internal outlet orifice by approximately one-half. An outer frustoconical surface surrounds the internal venturi constriction outlet. An expansion chamber diameter is greater than the diameter of both the venturi constriction outlet orifice and the outer frustoconical surface adjacent this orifice.

Abstract: A dual induction apparatus for high volume low pressure spraying systems is provided. The invention includes an atomizing tube with an entrance, a midpoint and an exit. A jet nozzle is connected to the entrance of the atomizing tube. A first plurality of induction ports pass through the sidewalls of the atomizing tube proximal the jet nozzle. The first plurality of induction ports are in communication with ambient air. When the compressed air passes through the jet nozzle a low pressure field is formed causing ambient air to be drawn into the atomizing tube. A venturi element is located inside the atomizing tube in the area about the midpoint to the exit. A tube in communication with the removable venturi element is passed through the sidewall of the atomizing tube. The tube is affixed in a perpendicular fashion to the aperture in the venturi element on its first side and is further connected to a reservoir of paints, powders, solvents or other substances.

Abstract: A spray gun is easily convertible between a number of configurations. A removable fluid insert may be placed in interchangeable (airspray and HVLP) spray heads with the fluid insert being either a pressure fed device which depends downwardly from the front end of the gun into a pressurized cup or via a connection to a pressurized fluid source or may have an upwardly directed insert which will take fluid from a gravity cup. A simple air swivel also adds ergonomic benefits.

Abstract: A dispenser for dispensing a mixture of a substance diluted with a liquid, includes a housing having an attaching section for attaching the housing to a container for the substance, a dispenser inlet for connection to a pipe supplying the liquid, a dispenser outlet for connection to a pipe to deliver the mixture, a chamber communicating with the dispenser inlet and outlet and including a chamber bottom wall formed with a container inlet port and with a container outlet port such that, when a container is attached to the housing, the container inlet port leads from the chamber to the container, and the container outlet port leads from the container via the chamber to the dispenser outlet, and a control valve in the chamber for controlling the flow of the liquid therethrough to the container inlet port.

Abstract: A lawn chemical distribution system that includes a housing with a protective cover and with an interior that includes numerous canister receiving cavities with canister piercing elements located at the bottom of each cavity which pierces the bottom of a chemical canister inserted therein. The canisters are secured together with a resilient harness that allows all the canisters to be replaced in the receiving cavities in a single motion and also allows a user to replace a single canister if desired. The multiple canisters contain either fertilizer, insecticide, herbicide, fungicide, or combinations thereof and may be activated by in line valves located within the system to add any of the chemicals contained within the canisters, in a metered amount, to an irrigation system that conveniently distributes the chemicals on a lawn or garden.

Abstract: A tool including a nozzle for providing a high speed sheet of water wherein a generally circular pressurized stream of water is accelerated through a reduced area and reformed into a high-speed water sheet. The tool may include a reservoir for holding liquid cleaners, and a port through which the liquid cleaner is introduced into the nozzle through a port in the nozzle.

Abstract: The system of the invention comprises a container with a spout that can be filled with water from a tub. The container having a housing positioned above the container for electrical and pumping components. The housing comprises a dry side and a wet side and a source of liquid cleaner concentrate. The wet side is proximate the container and diluent water. The system also comprises a spray wand that can be used to spray both cleaner and rinse water on a cleanable surface. The housing comprises a wet portion containing a pump drive and tubing providing liquid communication between the container, source of aqueous concentrate and diluent, venturi and liquid communication to a spray head. The dry side containing wiring switches, rechargeable batteries and other electrical systems.

Abstract: A balanced pressure proportioning system for injecting firefighting foam concentrate into a stream of water is provided. The system includes a primary conduit having a central and a spring-biased piston disposed immediately downstream of the restriction. Foam is supplied to the conduit from a chamber which is in communication with the conduit through a foam passageway at a point disposed immediately downstream of the restriction. The chamber is divided into a foam section and into a water section by a diaphragm or other suitable member. The water section of the chamber is maintained at the upstream water pressure by way of a water passageway which provides communication between the water section and the conduit at a point disposed upstream of the restriction. Pressure is communicated from the water section of the chamber to the foam section of the chamber by the diaphragm or other suitable movable member.

Abstract: A portable, self-contained vacuum device designed for hand-held use to create a moderate vacuum effect for various applications. A small diameter tube (10) is firmly attached (14) to the nozzle or spray tip of an aerosol canister and inserted at a point (16) through the wall of, and directed in one direction along the interior length of a larger diameter tube (12). The tubes may be fixed to the exterior of the aerosol canister, may be detachable for storage, or may be manufactured into the interior of the aerosol canister. When propellant gas from the aerosol canister is released and injected out of the outflow end (20) of the smaller diameter tube toward one end of the larger diameter tube, the resulting aspiration of ambient gasses creates a vacuum effect at the opposite end, or intake end (18), of said larger diameter tube.

Abstract: An improved additive eductor for supplying additives, including foam concentrates and thixotropic foam concentrates, into a hand line or waterline for supplying a nozzle used for fire fighting operations wherein the additive eductor can be operated in either eductive or non-eductive by-pass mode and further comprising in a prefered embodiment a back-flow preventative metering valve attached to a additive port.

Abstract: Provided in the shower spray, which may also be connected, as a hand-held shower with a handle piece (110'), to a flexible water hose, are two optionally activable reservoirs (150') and two storage and supply chambers (160') which are assigned to said reservoirs and are intended for receiving ingredients. By means of a venturi nozzle arranged in the shower spray, with appropriate setting, ambient air can be taken in through the ingredients and aromatized as a result. This aromatized air is admixed to the through-flowing water jet at the venturi nozzle. There is no need for any external, voluminous containers or complicated valve mechanisms. The quantity and type of the ingredients to be admixed can be set directly on the hand-held shower spray by a control lever and metering screws (170').

Abstract: A device is mounted between an inlet pipe and a shower head and includes a receptacle for mixing a stream of water with additives. A portion of the stream of water passing from the inlet pipe to the shower head is diverted into the receptacle. The receptacle includes replaceable containers, a first container containing a first additive and a second container containing a second additive. The diverted stream of water mixes with the first additive and the second additive upon contact with the first and second containers. The diverted stream containing additives is then returned to the main stream of water which exits the shower head. The flow of the diverted water to and from the receptacle is controlled by a valve. The present invention provides an improvement over known arrangements by providing additives which are kept separate from one another preventing a chemical reaction between the additives which would cause a loss of potency.

Abstract: A docking station and bottle system 23 including a filling head 20 and bottle 22 which have a head interconnect 86 and a bottle interconnect 90, respectively, for fastening the bottle 22 to the filling 20 head in order to prevent spillage. The bottle interconnect 90 includes a fluid port 106 and a vent port 104 which are simultaneously opened from a closed position in order to allow the filling head 20 to draw concentrated fluid from the bottle 22 and mix the concentrated fluid with a diluting fluid such as water before being dispensed from a filling head nozzle 52. The bottle 22 includes identifying indicia 158 for purposes of tracking utilization of the bottle and the concentrated fluid contained therein. An information storage system 170 is associated with the bottle and filling head in order to provide records of such concentrated fluid utilization. A wall mounted docking station 200 including one or more filling heads 20 is also provided for. A refill head is further provided for refilling bottle 22.

Abstract: Disclosure is directed to two preferred embodiments for a multi-chamber dispensing apparatus, particularly useful for home owners, for dispensing one or more different water transmittable products. The apparatus, to work in conjunction with conventional hose sections, includes plural chambers, each with a metering valve to adjust the flow of product from the respective chambers. One or more of the metering valves may be opened to effect a mixing of product, if desired.

Abstract: A spray gun structure that may be controlled to eject water only or a mixture of water and detergent including a handle, a lever, a connecting body, a gun body, a detergent receiving tank, a securing screw sleeve, a retractable connector, and a nozzle. The lever is provided at a bottom portion of the handle for control of water intake. The connecting body is located at a top portion of the handle and extending forwardly and has a water channel a rear end of which is connected to a water conduit inside the lever. The gun body is connected to a rear portion of the connecting body and having a water channel which communicates with the water conduit of the connecting body such that, after the connecting body and the gun body are assembled, the detergent receiving tank may be mounted on a periphery of the assembly. The securing screw sleeve engages threads at a rear end of the gun body. The retractable connector has a hollow interior and an outer periphery fitted in the water channel of the gun body.

Abstract: An apparatus for diluting a liquid concentrate with a liquid diluent to form a use solution is provided. The apparatus includes an aspirator having a first inlet port, second inlet port, and an outlet port. A liquid diluent conducting means is connected to the first inlet port and a liquid concentrate conducting means is connected to the second inlet port of the aspirator for supplying thereto the liquid diluent and liquid concentrate respectively. Movement of a shut off valve and actuator valve operator controls both the shut off valve which is in fluid communication with the outlet port and the actuator valve which is in fluid communication with the liquid diluent conducting means to control flow of the liquid diluent.

Abstract: A fire fighting foam proportioner for use in providing precise proportioning of foaming agent to fire fighting liquid, e.g., water, includes a conduit incorporating a check valve and a venturi with a dual chamber piston pump having one part connected to the high pressure water source at the inlet to the conduit and the other part connected to a source of the foaming agent and arranged to pump the foaming agent through a foam conduit to the throat of the venturi where it is mixed with the water. Reversible valves responsive to pump movement are connected to the first pump part to cause it to reverse direction at the end of each stroke. A pair of one-way check valves at each of the inlet and outlet ports of the second pump part keep the foaming agent moving through the foam conduit where it is controlled by a pressure equalizing valve and a metering valve. The area of the foam conduit is controlled by the equalizing valve which includes a spool valve having pressure sensing areas at each end.

Abstract: A water/soap sprayer for attachment to a kitchen faucet includes a sprayer unit having a handle section and a nozzle section having an outflow nozzle end. A water flow conduit extends through the sprayer unit for transferring water through the sprayer unit and to the outflow nozzle end, the water flow conduit including a Venturi passage section for accelerating fluid flow therethrough. A detergent flow conduit extends through the sprayer unit and is connected in fluid connection with the Venturi passage section of the water flow conduit within the sprayer unit. A water flow control valve is mounted within the sprayer unit, the water flow control valve operative to restrict and permit water flow through the water flow tube, the water flow control valve in the water flow conduit positioned upstream from the Venturi passage section of the water flow conduit.

Abstract: A self-educting, high expansion, multi-agent nozzle of the type for educting more than one chemical and mixing these chemicals with a motive fluid stream within the nozzle and ejecting the mixed fluid stream is provided. The self-educting, high expansion, multi-agent nozzle including a body having an eductor section and a barrel section, the eductor section forming a vacuum chamber and a first and second chemical port adapted for connecting to a first and second chemical source respectively, the barrel section forming a pathway between an inlet from the eductor section to an open discharge end; a head forming a tapered conduit between an open motive fluid end adapted for connecting to a motive fluid source and an open exit end, the head connected to an open head end of the eductor section in a manner such that the exit end is disposed within the vacuum chamber; a barrel sleeve movably connected to an exterior surface of the barrel section; and a diffuser mounted within the pathway of the barrel section.

Abstract: An improved spraying device for mixing a first fluid with a second fluid prior to dispensing into the environment. The spraying device includes a spraying head connected to a cartridge bottle. A shroud covers the spraying head to cartridge bottle connection. The chemical remains in a closed system even after the cartridge bottle is attached to the spraying head. A unique gear and/or cam system is provided to open the flow path of the second fluid and provide a positive operation. Also, the orifice diameter of the second fluid flow path is predetermined.

Abstract: A test system for use in testing Aircraft Rescue Fire Fighting and Structl Pumper vehicles equipped with fire fighting foam distribution systems. The dye piping arrangement for the test system uses a dye concentrate and water mixture which are delivered into the dye water foam free test system through a three way ball valve, a proportioner and eductor. Fluid flow through the eductor generates a vacuum or negative pressure within the eductor. The dye concentrate from a dye storage bottle is then suctioned into the foam distribution system by the negative pressure within the eductor. A needle valve, check valve and a dye solenoid valve are included in the system. The needle valve meters the amount of dye suctioned into the dye water foam distribution system. The check valve prevents any fluids from back flowing into the dye concentrate tank. The normally closed dye solenoid valve is remotely operated by an ON-POWER OFF-OFF three position switch.

Abstract: There is provided a liquid atomizing spray gun of the general type that produce single, finite bursts of gas/liquid mixture which overcomes disadvantages of prior designs in that it does not depend for pressurizing and propelling gas on the squeezing of a trigger while aiming the device throughout the spraying stroke and in which a gas compressing piston is not driven by or otherwise directly mechanically linked to a trigger. These and other objectives are achieved in part by providing a spray gun with a chamber containing a gas tight piston that is reciprocable within the chamber, but wherein the piston is not reciprocated by the trigger. Instead, the piston is independently drawn to a rearward position for drawing gas into the chamber through a one way gas intake valve by the creation of a partial vacuum within the chamber. The piston is then released and biased forward to compress the gas within the chamber.

Abstract: An interface for connecting an electrophoresis capillary to a mass spectrometer sprayer tube includes a first length of support tubing having an axial bore receiving and aligning the capillary and tube in end-abutting relationship at a junction. A solvent tube in a second length of support tubing intersects the first length of tubing in a T at the junction to supply makeup solvent to analyte flowing from the capillary to the sprayer tube. The tubing is secured in a T fitting which seals the tubing around the capillary, the sprayer tube, and the solvent tube.

Abstract: A spray assembly including a venturi type spray nozzle, a valve attached to the spray nozzle, a reservoir adapter that can engage a reservoir containing a liquid coating material to be sprayed, and a flexible hose between tile reservoir adapter and the valve. The outer surface texture of material being coated can be adjusted using the valve which is useful in matching the surface texture of chip resistant coatings and undercoatings on an automobile, and the hose allows the operator to spray material onto a substrate from any orientation of the spray nozzle which facilitates coating locations such as the lower portions of panels or in wheel wells and trunks. A valve passageways is shaped to facilitate fine adjustment of the air/coating material ratio when small amounts of material are being delivered, and the valve includes an air purge to remove material from the valve and nozzle when the valve is shut off.

Abstract: A chemical injection apparatus for injecting chemicals into a toilet having a tank, a bowl, an overflow pipe and a refill hose. In one embodiment, the apparatus includes a housing having an inlet adapted to couple to the refill hose to receive refill water and an outlet that provides chemically treated water, an inner chamber, disposed within the housing, that is adapted to contain a chemical tablet, and a first tube coupled between the inlet and the outlet of the housing, the first tube having a dispensing hole that dispenses at least a portion of the refill water from the first tube into the housing, the dispensing hole being constructed and arranged such that the water dispensed from the dispensing hole contacts the chemical tablet to dissolve a portion of the chemical tablet to create chemically treated water, the first tube also having a venturi near the outlet end and a suction hole near the venturi.

Abstract: An automatic lawn treatment dispensing unit (10) for a main water supply assembly (12) comprising a container (14) for holding a liquefied substance, such as a fertilizer or pesticide therein. A structure (16) is for coupling a lower end of the container (14) into the main water supply assembly (12). A facility (18) is provided for filling the liquefied substance into the container (14) through an upper end thereof. An assemblage (20) is for siphoning the liquefied substance out of the container (14), through the coupling structure (16) and into the main water supply assembly (12) to be dispersed onto a lawn (22).

Abstract: An adjustable oil metering valve for a compressed air lubricator includes a lower, fixed member (20) having a central, downwardly extending oil delivery nozzle (30) and a peripherally ramped upper surface (29) in communication with the nozzle (30). Seated on the surface (29), and rotatable relative thereto, is a valve member (21) that includes a lower disc portion (31) having a radial channel (35) formed in its lower surface. The lower surface of the rotatable disc portion (31) and the upper surface (29) of the fixed member (20) thereby define between them a peripheral gap (H) of progressively varying height into which the oil is fed whence it flows to the nozzle (30) via the channel (35). The rate of flow of oil to the nozzle (30) is substantially proportional to the height of the gap (H) at the angular location of the outer end of the channel (35) which may be selectively varied by rotating the valve member (21).

Abstract: This invention provides a jet pump comprising: a three-dimensional axisymmetric nozzle with a top end and a bottom end, a mixing chamber with a top section and a bottom section, a conical diffuser with a top end and a bottom end, a distributor of a shower cap and an induction passage. The top section of the mixing chamber neighbors the bottom end of the nozzle. At a distal downstream end of the bottom section of the mixing chamber is the top end of the diffuser. The distributor is connected to the bottom end of the diffuser. The nozzle, the mixing chamber, the conical diffuser and the distributor share a longitudinal axis which is perpendicular to longitudinal axis of the induction passage. A pressurized first fluid is injected through an inlet orifice of the top end of the nozzle.