Abstract: A fluid cartridge for a plural component sprayer is configured to receive first and second component materials and purge air from the sprayer and provide the first and second component materials and purge air to a mix chamber for spraying. The fluid cartridge includes a cartridge body, material flowpaths extending from a second end to a cartridge bore, and a purge path extending from the second end to the cartridge bore. Fluid checks are disposed in the material flowpaths and purge path to prevent backflow out of the fluid cartridge. Side seals are disposed in the material paths and are pre-loaded to extend into the cartridge bore and engage a mix chamber within the cartridge bore.

Abstract: A spray gun, which is convertible for use with and without an extension wand, may use the valve mechanism and nozzle attached adjacent to the handle of the gun. When spraying requires the spray to be released away from the gun handle and for spot applications of the spraying liquid, the spraying nozzle is removed and the extension wand or tube is attached to the gun handle. The valve assembly remains in place and another valve assembly and nozzle is provided at the end of the extension furthest away from the handle. A rod is attached to and extends between the valves so that they both move together from closed to open positions responsive to the trigger of the spray gun. When the valves are closed, there is no spraying liquid in the extension. The valving is dripless both with and without the extension.

Abstract: To provide an accumulation valve which is stable and moves sensitively, where the number of parts has been reduced, and an accumulator trigger sprayer assembled with the same. The present invention is an accumulation valve S used in an accumulator trigger sprayer 100 which imparts pressure to liquid in a cylinder by a piston portion 11 to spray liquid from a nozzle portion 5a to the outside, the accumulation valve S including a piston valve portion 21, a spring portion 22 for pressing the piston valve portion 21 to a piston valve seat, and a mounting portion 23 for mounting the spring portion 22 to the piston portion 11, wherein the piston valve portion 21, the spring portion 22 and the mounting portion 23 are formed integrally.

Abstract: A method is provided for inhibiting plant growth by inducing hypothermia by applying a treating substance to summer annual weeds and grasses. Susceptible undesirable plants will be killed by this treatment, while non-susceptible desirable plants will not be adversely affected by this treatment. Compressed carbon dioxide may be applied to other summer grasses to cause the grasses to become dormant. An apparatus is provided for inducing hypothermia in undesirable plants by applying a treating substance. A canister capable of housing gas may be provided. A valve may be provided to control the amount and pressure of gas dispensed from the canister.

Abstract: A shut-off having a flexible diaphragm valve resting on a valve seat. The force of the pressurized liquid presented to the valve lifts the diaphragm valve and opens the shut-off, when a plunger biased to hold the valve against the valve seat is lifted by movement of a handle attached to the plunger. A mechanism is provided to assist the lift-off of the diaphragm valve to provide a positive mechanical lift-off force. Such mechanism may include a projection on the diaphragm valve which is captured in the plunger, or a spring captured in an opening of the valve seat via which pressurized liquid is presented to the diaphragm valve.

Abstract: A dispensing gun has a gun body, a first component inlet, a second component inlet, a dispense head, a first valve, a second valve, a clamp, and a trigger. The component inlets are attached to the gun body for receiving components. The dispense head is for dispensing the components. The valves are attached to the gun body and there are valve stems for controlling the dispensing of the components. The clamp has an upper portion and a lower portion, with the first and second valve stems positioned in between the upper and lower portions. The two portions are attached such that the first and second valve stems move with movement of the valve actuator in a direction parallel to the axes of the valve stems. The trigger is attached to the gun body and controls movement of the clamp.

Abstract: A power sprayer or spray device for use with a faucet. The spray device may include a spray mode and a stream mode of operation.

Abstract: A slide pin assembly is introduced in HVLP and other spray guns allowing the needle/trigger actuation to be engaged and disengaged. Furthermore, the fluid nozzle is knurled to provide for effortless removal. The construction of this gun consists of a slide pin, trigger, needle and fluid nozzle. The trigger has keyhole apertures that interact with the diameter of the cross-action slide-pin.

Abstract: The pistol is used for injecting through a hole a sealing product formed by a mixture of at least two solutions. It comprises a tubular injection system which is fed, notably under pressure, with each of said solutions, and which ends with an injection head capable of penetrating into the injection hole. The tubular system includes for each solution, an independent transfer conduit emerging from the end of the injection head, so that the mixing of the solutions is performed outside the injection head. Preferably, the first transfer conduit is a tube with a circular cross-section and the other transfer conduit(s) has(have) an annular cross-section, being delimited by one or several tubes arranged concentrically around the first transfer conduit.

Abstract: A fluid control spray gun stops, starts and controls flow of fluids through a nozzle. The gun has a fluid entry port; a trigger that controls fluid flow by movement of a pin; a handle that moves the trigger; a fulcrum point on the handle; three floating pins comprising in order a first floating pin, a second floating pin and a third floating pin, the three floating pins being present in an upper region of the handle; a hand grip portion in the handle; the upper region of the handle allowing engagement between the first floating pin and the trigger; and the upper region of the handle having a forward end allowing engagement of the third floating pin with a stabilizing element.

Abstract: A manually operated sprayer for a container of liquid to be sprayed includes variable volume pump means having liquid inlet and outlet means for discharging the contents of the container. The sprayer further includes a control module having product and vent valves reciprocably disposed therein, the product and vent valves being simultaneously reciprocable by means of the manual actuator between valve open and valve closed positions. In the valve open position, the product and vent valves respectively prevent flow of product and air respectively into the liquid inlet means and into a vent passage in communication between atmosphere and an interior of the container, and in the vent closed position, the product and vent valves respectively enable flow of product and air respectively into the liquid inlet means and into the vent passage.

Abstract: The present invention teaches a car wash wand having a fan mounted thereon which allows the wash wand user to blow the vehicle dry using the same lightweight hand carried device used to wash the car. The fan may be powered by the pressurized water flowing through the wash wand, which may be diverted to a turbine chamber to power the turbine, which in turn provides mechanical power to turn the fan. The wash wand may also have selection devices allowing at least two modes of operation: water coming out versus air coming out, and optionally a third mode of operation in which nothing comes out.

Abstract: A pressure washer wand having first and second valves that can be opened in a predetermined or user-adjustable manner through movement of a trigger. In one form, the first and second valves are opened sequentially in response to movement of a trigger to transition from a no-flow condition to a relatively low pressure flow and thereafter to a relatively high pressure flow. In another form, the sequencing of the valves can be changed such that only the first valve, which provides a relatively low pressure flow, is opened in response to movement of the trigger. A pressure washing system having the pressure washer wand is also provided.

Abstract: The present invention is a dispenser adapted to be coupled to a fluid container. The dispenser comprises a dispensing head, an energy source, and a fluid pathway. The dispensing head includes a fluid pump, a motor adapted to power the pump, a trigger adapted to control the motor, and a nozzle orifice in fluid communication with a discharge end of the pump. The fluid pathway has one portion in fluid communication with an intake end of the pump and another portion inside the container.

Abstract: A compound spray gun comprises a tube body having an approximate L shape; one end of the tube body being installed with a spray head; a front surface of the spray head having a plurality of water outlets which have different forms; an interior of the tube body having two flow channels which penetrate through the tube body; a receiving body filled with additive being detachably installed to a lower end of the tube body; a guide post being axially installed in the receiving body; one end of the guide post exposing from the tube body for being connected to a cleaning running water; another end of the guide post in the receiving body being connected to one flow channel; and a key being pivoted to the tube body.

Abstract: Modular spray gun apparatus and methods are disclosed. In one embodiment, an apparatus includes a handle module and a head module that is removeably coupled to the handle module. The head module includes a first housing having an inlet adapted to be coupled to a source of pressurized gas, a flow passage extending between the inlet and an outlet, and a first coupling member proximate the outlet. Similarly, the head module includes a second housing having a second coupling member removeably coupled to the first coupling member of the first housing, a nozzle fluidly communicating with a spray outlet, and a needle assembly operatively associated with the nozzle to control a flow of liquid material and pressurized gas emanating from a mixing passage through the nozzle.

Abstract: A spraying apparatus for spraying liquid surface treatment material which includes a gas inlet, a liquid inlet and an outlet nozzle. The apparatus also has a needle valve for regulating the supply of surface treatment material to the nozzle. The needle valve is at least partially located within a gas outlet chamber and is adapted so as to cause minimal disruption to the gas flow from the gas inlet to the nozzle. To further aid gas flow efficiency, the gas supply passage is substantially straight, the outlet chamber has a laterally outwardly tapering inlet and an inwardly tapering outlet and a smooth radius of curvature from the gas supply passage into the outlet chamber. There is also provided a control means for controlling the axial movement of the needle valve, the control means being provided with indicator means so as to provide an accurate, repeatable control means.

Abstract: A manually operated sprayer for a container of liquid to be sprayed includes variable volume pump means having liquid inlet and outlet means for discharging the contents of the container. The sprayer further includes a control module having product and vent valves reciprocably disposed therein, the product and vent valves being simultaneously reciprocable by means of the manual actuator between valve open and valve closed positions. In the valve open position, the product and vent valves respectively prevent flow of product and air respectively into the liquid inlet means and into a vent passage in communication between atmosphere and an interior of the container, and in the vent closed position, the product and vent valves respectively enable flow of product and air respectively into the liquid inlet means and into the vent passage.

Abstract: A spray gun having a gun body; a nozzle assembly arranged on the gun body; a compressed air supply channel located in the gun body, controlled by a valve assembly, a regulator for adjusting the supply of the spray material, an actuating element for actuating the valve assembly) and the regulator and a pressure measuring device. A pressure measuring device, resistant to dirt, that contains a pressure sensor integrated into the gun body and is connected to the compressed air supply channel via a capillary (43) located within the gun body.

Abstract: An improved metering apparatus is provided for use with a foam dispenser that disperses beads of foam after mixing streams of two foam components together. The dispenser has a pair of seal passages formed in a body portion of the dispenser and a spool valve rotated mounted in the body portion. The spool valve has a pair of flow passages formed in it that can be rotated into mating alignment with the seal passages formed in the dispenser body. The spool valve flow passages have circular cross-sections while the seal passages have non-circular cross-sections, and preferably triangular cross-sections.

Abstract: A grip cover is provided for fitting over the hand grip of a coating dispensing device for dispensing coating material. The grip cover includes material for cushioning a hand of an operator using the coating dispensing device.

Abstract: Modular spray gun apparatus and methods are disclosed. In one embodiment, an apparatus includes a handle module and a head module that is removeably coupled to the handle module. The head module includes a first housing having an inlet adapted to be coupled to a source of pressurized gas, a flow passage extending between the inlet and an outlet, and a first coupling member proximate the outlet. Similarly, the head module includes a second housing having a second coupling member removeably coupled to the first coupling member of the first housing, a nozzle fluidly communicating with a spray outlet, and a needle assembly operatively associated with the nozzle to control a flow of liquid material and pressurized gas emanating from a mixing passage through the nozzle.

Abstract: The present invention pertains to a trigger sprayer which is connectable to two container volumes containing separate liquids. The sprayer has a trigger that is manipulated to draw the separate liquids into two separate pump chambers and then supply the two separate liquids from the pump chambers through two separate discharge passages and check valves to a mixing chamber of the sprayer. In the mixing chamber the two separate liquids are mixed together prior to their being dispensed from the trigger spray.

Abstract: An applicator is provided which through the use of valve assemblies and separate first and second tubing member delivers two separate materials separately to a mixing head. The mixing head is provided with two separate passageways which terminate into an outlet passageway. To help create equal pressure between the materials at the point where the materials meet, an impinger can be placed in one or both of the mixing head passageways. Material flowing into each mixing head passageway first meet and are mixed in the outlet passageway. A tip is attached to the mixing head and a static mixer can be disposed within the tip for further mixing of the combined materials prior to their application out of the tip onto the intended surface. Material is supplied to the valve assemblies by various methods such as hoses. A spray gun embodiment is also disclosed.

Abstract: A low volume-low pressure spray gun (10) for spraying a fluid has a housing (12), a gas input (16), a trigger valve mechanism, and a nozzle (14). The gun (10) has lower and upper air passages (38, 39) which connect the gas input (16) to the trigger valve mechanism (23), and the trigger valve mechanism to the nozzle (14), respectively. The upper passage (39) is offset from the lower passage (38) and is substantially conical in shape, the layout of the passages (38, 39) producing a gas vortex in the upper passage (39) which creates a gas acceleration to compensate for the low pressure of the gas entering the gas input (16). The trigger valve mechanism comprises a piston valve (23), a liquid control needle valve (22), and a trigger (40). The piston valve (23) may include inner and outer apertured sleeves (26a, 26b), the sleeves being co-axial with the inner sleeve (26a) located inside the outer sleeve (26b).

Abstract: Water is first caused to flow through a first passage and rotate a first impeller. Rotation of the first impeller is linked to rotation of a second impeller, which is in fluid communication with a second, discrete passage. Vanes on the second impeller are constrained to move faster than vanes on the first impeller. Water is subsequently caused to flow through the second passage and to be more aggressively advanced by the second impeller.

Abstract: A pressure jet injector for administering an injectable product, including a casing, a pressure chamber connected to the casing, and a feeder for administering the product from the pressure chamber. To administer the product, a jet outlet, which may be formed as the pressure chamber outlet, is pressed against tissue using a pressing force. The pressing force acts on a trigger for the injector. The trigger is connected to the casing such that the pressing force is transferred to a resistance element. The resistance element is supported on the casing and the pressing force acting on the trigger is further transferred from the trigger onto the casing via the resistance element. The feeder is triggered as the pressing force reaches or exceeds a pre-set and/or measured magnitude.

Abstract: An applicator is provided which through the use of valve assemblies and separate first and second tubing member delivers two separate materials separately to a mixing head. The mixing head is provided with two separate passageways which terminate into an outlet passageway. To help create equal pressure between the materials at the point where the materials meet, an impinger can be placed in one or both of the mixing head passageways. Material flowing into each mixing head passageway first meet and are mixed in the outlet passageway. A tip is attached to the mixing head and a static mixer can be disposed within the tip for further mixing of the combined materials prior to their application out of the tip onto the intended surface. Material is supplied to the valve assemblies by various methods such as hoses.

Abstract: The invention relates to a paint spray gun with a paint nozzle placed on a gun body, an air nozzle placed around the paint nozzle, a compressed air valve placed within a piston borehole in the gun body, a compressed air borehole running through a handgrip of the gun body to the piston borehole, and a pressure-sensing and pressure display device placed in the hand grip. For sensing and displaying the spray pressure, a tube is placed in the compressed air borehole at a distance from its inner wall. The tube forms, in the interior, a channel for the compressed air supply to a part of the piston borehole placed upstream of the compressed-air valve, and borders an intermediate space between its exterior and the inner wall of the compressed air borehole.

Abstract: The spray gun includes a primary port for receiving a primary material such as adhesive or similar materials, for dispensing. The spray gun further includes a secondary port to receive an aerosol-based cleaner which is stored in an aerosol container within the handle of the spray gun. The valves associated with the primary and secondary ports are sequenced such that during ordinary depression of the trigger to apply the primary material, the aerosol-based cleaner is momentarily “poofed” through the nozzle to clean the nozzle prior to the application of the primary material. After the primary material has been applied and the trigger is released, the aerosol-based cleaner is again momentarily “poofed” through the nozzle to clean the nozzle.

Abstract: A two-component dispensing gun has two longitudinally-extending dispensing passages receiving metering rods and in fluid communication with two feed passages adjacent to an especially configured metering rod tip and valve seats formed at the exit end of each dispensing passage. Valve seats of the dispensing passage extend as protrusions from the gun nose and are sealingly received within cup shaped recesses formed in a detachable, throwaway nozzle having a static mixing chamber. The nozzle has a truncated cone configuration which, in combination with the geometric configuration of the dispensing and feed passages alleviates turbulent flow of the liquid components until reaching the static mixer within the nozzle. A cammed surface on each metering rod in combination with a yoke crossbar formed as part of the gun's trigger provides increased motion of the trigger for fine or slow metering applications of the gun.

Abstract: The spray gun includes a primary port for receiving a primary material such as adhesive or similar materials, for dispensing. The spray gun further includes a secondary port to receive an aerosol-based cleaner which is stored in an aerosol container within the handle of the spray gun. The valves associated with the primary and secondary ports are sequenced such that during ordinary depression of the trigger to apply the primary material, the aerosol-based cleaner is momentarily “poofed” through the nozzle to clean the nozzle prior to the application of the primary material. After the primary material has been applied and the trigger is released, the aerosol-based cleaner is again momentarily “poofed” through the nozzle to clean the nozzle.

Abstract: A dispenser for mixing together multiple fluids, such as foam components and dispensing the mixed fluids includes a body portion of the dispenser with fluid entrances and an exit. A handle extends from the body portion to facilitate grasping and operation by a user. A flow control valve is positioned in the body portion for controlling flow of foam components entering the dispenser mixing chamber. The trigger is movably mounted to the body portion in opposition to and spaced apart from the handle. A safety for preventing unintended operation of the dispenser is movably mounted to and extends lengthwise of the trigger that is always biased into a safety position. The safety has an arm for preventing movement of the trigger sufficient to cause unintended operation of the flow control valve, and the safety may be disengaged by the same single-handed action used to actuate the dispenser to dispense the mixed fluids.

Abstract: The spray gun has an air cap that generates a spray mixture of liquid and air. The air cap includes a fluid valve for controlling the delivery of liquid and a separate air valve in the body of the spray gun is provided for controlling delivery of air. A control mechanism assembly for both of the valves is located axially within a central bore extending substantially the length of the spray gun. The control mechanism is actuated by means of a cam and follower arrangement with the cam surface provided on the rear of a manually operable trigger. The fluid valve is fully adjustable separately from the air valve but the control mechanism assembly includes a common control member that is in engagement with the control mechanism and operates both the fluid and air valves.

Abstract: A combination spray apparatus which allows for the selection of several different flowable materials to be sprayed from a single unit and at the site of the unit itself. In the preferred manner, the spray apparatus includes a trigger nozzle as well as the selection of two different materials to be sprayed through a second barrel portion. An eductor it utilized to draw selected materials into a spray stream. The combination spray apparatus is operable with water pressures which are customary to most cities and industries.

Abstract: A two-component dispensing gun has two longitudinally-extending dispensing passages receiving metering rods and in fluid communication with two feed passages adjacent to an especially configured metering rod tip and valve seats formed at the exit end of each dispensing passage. Valve seats of the dispensing passage extend as protrusions from the gun nose and are sealingly received within cup shaped recesses formed in a detachable, throwaway nozzle having a static mixing chamber. The nozzle has a truncated cone configuration which, in combination with the geometric configuration of the dispensing and feed passages alleviates turbulent flow of the liquid components until reaching the static mixer within the nozzle. A cammed surface on each metering rod in combination with a yoke crossbar formed as part of the gun's trigger provides increased motion of the trigger for fine or slow metering applications of the gun.

Abstract: A spray nozzle adapter is used with a conventional spray nozzle having a nozzle plug for regulating the flow of fluid in response to a control lever. The spray nozzle adapter has an intake coupler having an axially extending cylindrical wall defining an intake orifice constructed to couple to the spray nozzle, a shaft coupled to the intake coupler and a valve assembly coupled to the nozzle plug and disposed in the fluid passage of the first shaft for controlling the flow of fluid from the spray nozzle in response to movement of the spray nozzle control lever. The valve assembly includes a valve and a lever coupled to the valve. The valve has a plug for controlling the flow of fluid from the outlet orifice. The lever is securely coupled to the nozzle plug of the spray nozzle to relay the movement of the nozzle plug to the valve. The spray nozzle adapter also has a cone-shaped deflector mounted to the intake coupler to substantially surround the shaft.

Abstract: A spool valve and cooperating housing with a particular shape. A portion of the housing has a relatively thin sidewall and it includes an integrally formed stub cylindrical wall portion. A cooperating cylindrical force-applying element is present which deforms the thin wall portion into snug sealing contact with the portion of the valve spool lying adjacent thereto.

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 spray gun for spraying fluent materials having a high concentration of particulate matter. The spray gun is connected to a source of pressurized air and a source of spray materials. The air and spray materials mix in a nozzle, atomizing the fluid in the spray materials before the mixture is discharged from the spray gun. A valve is provided to control the flow of the spray materials. A conduit passes through the valve to provide a secondary source of air to atomize the fluid in the spray materials. The valve is also configured to ensure that no spray materials can enter the chamber of the valve when the valve is the closed position.

Abstract: A spray gun for spraying fluent materials comprising a valve chamber, a nozzle connected to the chamber at one end thereof, inlet and outlet ports communicating with the valve chamber, and a valve element having a hollow interior displaceable in the chamber between closed and open positions. The valve element is operable in the closed position to extend between the inlet and the outlet ports to allow flow of material through the inlet into the hollow interior of the valve element and out through the outlet. The valve element in the open position is operable to split the flow through the inlet into: a first partial flow through the hollow interior of the valve element and out of the hollow interior and the valve chamber through the outlet; and a second partial flow through the spray nozzle, whereby the flow through the outlet is uninterrupted when the inlet is receiving the material under pressure.

Abstract: A system for spraying water-based adhesive and a method of using the system is disclosed. The system includes a hot air gun connected to both a source of hot pressurized air and a source of flowable adhesive. The gun includes a body having a handle assembly and a spraying assembly. The handle assembly includes a depressible trigger and first knob for adjusting the amount of flowable adhesive in the spray gun and a second knob for adjusting the pattern of the spray. The spraying assembly includes a spray nozzle and control valves operably connected with the trigger for controlling the flow of pressurized hot air and adhesive. The spraying assembly also includes an air routing insert for routing air currents to the nozzle and an adhesive fluid tube for routing adhesive fluid to the nozzle. The adhesive fluid is atomized upon leaving the nozzle when combined with the hot pressurized air.

Abstract: A spray gun suitable for use with both high volume, low pressure (HVLP) air and compressed air sources for atomizing liquids includes a housing; a nozzle attached to said housing for controlling liquid flow therethrough; a high volume, low pressure air inlet and a compressed air inlet, both disposed in the housing. An air chamber is provided within the housing having sufficient volume to enable high pressure air introduced therein to expand to a pressure equivalent to the pressure of the high volume, low pressure air source; and a high pressure valve is provided for introducing air from the high pressure inlet into the air chamber.

Abstract: An air-operated fluid spray gun for mixing multiple fluids together almost simultaneously with depositing the mixture on a surface by directing an atomized stream of one fluid out the end of the gun barrel toward the surface and injecting an atomized stream of another fluid generally radially into the first stream so that the streams mix thoroughly and the mixture is almost simultaneously deposited on the surface.

Abstract: A side injection plural component spray gun having one or more injector assemblies mounted for injecting a catalyst into a main component at the most forward position of the spray gun. In one embodiment, the injecting assembly has an injection jet connected to the air path for injecting a catalyst into the air stream just before it exits a port for shaping the main component into a fan shaped pattern. The injection jet is constructed to minimize adverse effects on the air stream for shaping the spray pattern. In a second embodiment, dual injection assemblies inject catalyst for delivery through both shaping air ports on either side of the fan shaped pattern of the main component or allows injection of a third component. These embodiments minimize the build-up of catalyst on the walls and passageways of the spray gun minimizing the need for maintenance of the gun and preventing clogging and corrosion of passageways.

Abstract: A valve for dispensing liquids having a high content of particulate material through a spray gun operates between open and closed positions which ensures continuous recirculation of at least a portion of the spray material. The spray gun has an inlet nipple and an outlet nipple for the spray material and the valve has a valve element with a hollow interior providing a flow passage for continuous communication between the inlet and outlet nipples. In the open position only a part of the circulating liquid is discharged through the spray nozzle and in the closed position, all of the material is recirculated. The valve element has a forward position which in the open position apportions the flow of liquid between the interior of the nozzle and the interior of the valve element, and a closed position which blocks flow from the inlet nipple to the interior of the nozzle and directs all of the flow through the valve interior to the outlet nipple.

Abstract: An apparatus has a cylindrical container with an intermediate floor containing a multiplicity of air holes through which air is pumped upward to keep glitter within the container above the intermediate floor in movement. A vertical housing within the container contains a venturi jet to suck glitter out of the container, through the vertical housing, and through a hose to a spray gun. Static reducing tinsel is emersed in the glitter in the container and connected to a ground outside the container. The spray gun can separately or simultaneously spray resin and glitter.

Abstract: A plural component airless spray gun for mixing and dispensing coreactive liquid materials has a mixing chamber into which coreactive components are introduced and mixed, an airless tip at a forward end of the chamber and from which the mixed components are emitted in a fan-shaped spray, and a mechanical purging rod that is actuable to clean residual mixed components from both the mixing chamber and the airless tip. The purging rod which has a main body of a diameter slightly less than that of the mixing chamber, and a forward end that defines a probe of a diameter that is slightly less than the dimension of the minor axis of an elongate orifice of the airless tip. During spraying, the purging rod is retracted rearwardly of the mixing chamber and of coreactive fluid inlets to the chamber.

Abstract: A spray gun designed for utilization with low pressure and high volume air supplies to obtain high product transfer efficiencies. The spray gun is designed for connection to an air supply at two locations on the gun with one location providing non-pressure bleeding connection to the air supply and with the other allowing air to continually flow through the gun. The design of the gun is particularly sized with internal passages to allow high CFM and low PSI functions. An air cap assembly to control spray patterns for vertical, horizontal and circular sprays is arranged on the outlet end of the gun. The unit as designed eliminates the utilization and requirement of exterior valving and air control mechanisms.

Abstract: A dosage gun includes a housing having a longitudinal bore therein which terminates at one end in an emission nozzle and pressure tanks which hold components of the dosage material. A dosage device is held in the bore and is designed as a nozzle needle for the gun. The dosage device contains a hollow needle and a dosage needle which is arranged in the hollow needle so that co-axial streams of material, one flowing inside the other, are ejected at the emission nozzle. In relation to the hollow needle, the dosage needle is, on the one hand, movable in order to conduct the components of the dosage material to the emission nozzle and, on the other hand, rotatable in order to adjust the amounts fed to the emission nozzle. A mouthpiece is preferably provided on the emission nozzle to form a widened mixing chamber. As a static mixer, the mouthpiece contributes to good thorough mixing.