Abstract: A hand held spray gun including a gun body, a barrel and a nozzle assembly attached to the front of the barrel. A tubular retainer passes through a portion of the body and is threaded into a passage in the barrel to connect the barrel to the body. A fluid valve actuator extends from the body through the retainer and into the barrel passage for operating a fluid valve in the nozzle assembly. The retainer also functions as a guide for the valve actuator, holds a radial fluid seal for forming a sliding seal against the valve actuator and serves as a stop for a spring biased fluid seal between the valve actuator and the barrel.

Abstract: A gun having a gun body which includes a housing for component inlet and outlet passages and for a product flow control valve, which further includes a handle, a nozzle receiver assembly, and a trigger for rotating a spool valve between open, closed, and intermediate positions, and wherein means are provided for controlling the proportion and flow rates of the components within the flowing passages, and to facilitate insertion, locking, and ejection of the nozzle within the gun body.

Abstract: A compact spray gun using a single air supply port to actuate two piston valves and act as an air refinement system. An externally adjustable cartridge type packaging assembly needle piston valve seals the resin. A spool valve portion of a catalyst piston valve having O-ring seals is separable external from the piston portion. Leak detection ports are provided so the operator can easily determine when to adjustment or replacement of the packing or O-ring seals. The catalyst piston valve controls the mixing of the catalyst and air from a second air supply port. In a preferred embodiment, the resin piston valve controls a valve which provide air to the chopper system simultaneously with spraying of the resin.

Abstract: A foam dispensing gun of the type having a disposable nozzle for mixing and dispensing separate fluid components of a resin system in which a single, relatively large diameter cylindrical nipple projecting from the gun body supplies both components to the interior of the mixing nozzle. The nozzle is retained on the gun by a sliding breech which also pivotally supports a valve actuating trigger to be in an operative position when the breech is moved to retain a nozzle to the gun and disabled when the breech is moved to release the nozzle for reloading and by a molded-in ring which makes a fluid tight seal between the nozzle and the single gun body port. The breech includes a stop member so that the trigger actuating forces are isolated from the nozzle.

Abstract: A spray gun has a housing with a piston chamber formed therein. A piston is movable within the piston chamber. One or more control rods connect to the piston and move in conjunction with the piston. The piston has a gas passageway in it. The gas passageway has a mouth which fits against a piston sealing member to control the flow of gas through the passageway. Each of the control rods includes a gas channel through the control rod extending from one end of the control rod to the other end of the control rod. Each of the control rods is associated with a spray component cavity with one of the ends of the respective control rods fitting in to a spray component seat within the component cavity. Movement of the control rod with respect to the seat serves as a valve for the spray component within the particular component cavity.

Abstract: A gun having a gun body which includes a housing for component inlet and outlet passages and for a product flow control valve, which further includes a handle, a nozzle receiver assembly, and a trigger for rotating a spool valve between open, closed, and intermediate positions, and wherein means are provided for controlling the proportion and flow rates of the components within the flowing passages, and to facilitate insertion, locking, and ejection of the nozzle within the gun body.

Abstract: A spraying system having a plurality of separate pressurized fluid supply sources, a spray gun having a discharge nozzle and a plurality of fluid inlet ports corresponding to the number of supply sources and each communicating with the discharge nozzle, lines coupling each supply source to a respective one of the inlet ports, and a selectively operable discharge control associated with the spray gun for permitting passage of fluid through the discharge nozzle from any one of the plurality of supply sources, for enabling the simultaneous passage of fluids through the nozzle from a plurality of the supply sources, and for preventing the passage of fluids through the nozzle from all of the supply sources. The discharge control includes an individual spring biased valve assembly in each inlet port and a single control lever that is movable between an operative position for actuating selective of the valve assemblies and an inoperative position in which none of the valve assemblies are actuated.

Abstract: Washing device of the gun type intended to be held by two hands. Designed en in operation to have a generally linear flow path for liquid to deliver the maximum volume of liquid at a given water pressure. Especially useful for washing mud from the tracks of military vehicles.

Abstract: A hydraulic valve arrangement is provided for simultaneously opening or closing off the flow of fluid from a plurality of separate and distinct inlet fluid lines to a plurality of concentric fluid passageways connected to an internal mixing chamber having an outlet nozzle leading therefrom. The valve arrangement includes a spool valve axially slidable within a bore of a housing. This spool valve includes at least a central fluid passageway therethrough and another, concentric fluid passageway defined between the spool valve and the bore. When the spool valve is in the open position, the inlet fluid lines are in fluid communication with both the central passageway and the concentric passageway. Fluid flowing through these passageways enters into the interior mixing chamber and exits that chamber through the outlet nozzle. When the spool valve is in the closed position, flow from the inlet fluid lines to the passageways is cut off.

Abstract: An improved injection gun system for lawn treatment adapted to permit selective application of a treating fluid by the operator as an incident to application of a main stream fluid through a hand held injection gun. The system comprises a pressurized source of main stream fluid, a pressurized source of treating fluid, a reach of hose including a large diameter conduit connected to the main stream fluid source and a small diameter conduit connected to the treating fluid source, an injection gun connected to the large diameter conduit of the concentric hose, and a fail safe cut-off valve interposed between the small diameter treatment fluid conduit and the injection gun for controlling the injection of treatment fluid into the main stream passing therethrough.

Abstract: The present invention contemplates a fluid delivery system for use with one or more individual water blast guns, each of which have an auxiliary shut-off valve integral with the gun and also include electric circuit completion means for operating a pneumatic secondary shut-off valve in series with the high pressure fluid supply conduit feeding each gun. This series arrangement of first and second shut-off valves in the fluid conduit between the pump discharge and each individual gun assures a fail-safe shut-off system which gives the operator of each gun the assurance that upon release of the water blast gun trigger that cessation of the water blast from the gun nozzle will occur. Accordingly, the likelihood of the operator falling over backwards upon release of the gun trigger is eliminated and risk of a dropped runaway water blast gun that failed to shut-off is eliminated.

Abstract: The invention relates to a high-pressure liquid installation with a pressurized water generator (10) to which a spraying device (42) is connected, while an adjustable pressure-limiting valve (14) is arranged between the pressurized water generator (10) and the spraying device (42). The pressure-limiting valve (14) is adjustable in its pressure by remote operation by electrical signals which can be generated by electrical control elements (56, 58), while a delay device (40) may be provided for surge-free pressure adjustment.

Abstract: A dispensing device for mixing and dispensing multi-component liquid mixtures is described. The dispensing device comprises valve assemblies including a tapered valve plug and a correspondingly tapered valve seat and, downstream from the valve assemblies, respective orifices which provide access to a mixing and dispensing nozzle. The cross-sectional area of the orifices is about 1.7.times.10.sup.-4 to 2.0.times.10.sup.-3 sq. in. and the ratio of the cross-sectional area of the valve opening at any level of operation to the cross-sectional area of its respective downstream orifice is less than about 3.0. The device generally is configured as a dispensing "gun" and provides a capability for controlled variation in the flow rate of the liquid components and mixing of the components at a consistent volume ratio.

Abstract: Foam forming liquid components and inert gas are directed by a gun in separate and discrete streams toward a common focal point just forward of the gun nozzle to effect mixing of the liquid components as the foaming plastic mass is directed into a container provided to receive and contain the foam product. Mixing of the liquid components within the gun which controls the flow is entirely avoided whereby the difficult problem of cleaning out reacted plastic material is entirely avoided even after long periods of non-use. In one technique, air is continuously mixed with each liquid component stream within the gun to provide frothy mixtures of liquid and air at the point of mixing of the reacting streams. A flexible extension of the nozzle may be used, if desired, to conduct the component liquids and air to a location some distance forwardly of the gun. Provision is made for air-purging the liquid component channels within the gun nozzle.

Abstract: A spray gun is disclosed for simultaneously spraying a liquid and a particulate material, for example, in applying decorative facings to walls and like surfaces. The gun is designed to spray a central stream of particulate material surrounded by a liquid stream. The gun includes a first air passageway into which the particulate material is introduced and a second air passageway into which liquid can be introduced under pressure. An air flow control valve is disposed in a first air passageway and is coupled to a trigger so that the valve is progressively opened as the trigger is squeezed. A flow control valve is also provided for the liquid and is coupled to the trigger so as to be progressively opened as the trigger is squeezed.

Abstract: A urethane foam gun is disclosed in which polyisocyanate and polyol feed streams are mixed with air under pressure within the gun with vigorous intermixing in the outlet nozzle to a condition ready for application. Once applied the foam polymerizes in place. The gun is formed with an integral block design in which dual plug valves are mounted for control of the streams. Actuation is achieved by a trigger valve mounted on the gun, and a second gun-mounted valve controls a solvent flush for cleaning to avoid polymerization within the gun itself. The gun is useful for foam-in-place applications, such as protective packaging.

Abstract: A dispensing apparatus is provided for mixing and spraying A and B components of urethane foam plastic whereby urethane foam plastic may be sprayed in place. The gun includes structure whereby a solvent for the A and B components may be readily utilized to thoroughly flush the A and B component valves, the mixing chamber and the mixer for the discharge nozzle and is further constructed in a manner whereby the material handling valves will not be distorted by the materials handled thereby and the gun may be temporarily shutdown for short periods or overnight without the need to turn the flow selectors for the components A and B to the off positions thereof. Further, the gun is constructed in a manner whereby the control valves are simultaneously actuatable and the flow selectors and the rotation limiting slots thereof may be lubricated to prevent drying out of the A and B components during an overnight shutdown of the gun preventing the flow selectors from being turned.

Abstract: A spraying device for applying a coating material such as anticorrosion oil to the internal surfaces of hollow bodies comprises a spray gun provided with a front piece which is inserted into the hollow body during operation of the device. Furthermore, the device comprises a pump for feeding the spray material to the gun and a control device for controlling the gun, the pump and the introduction of compressed gas into the front piece. This gas is introduced in order to further atomize the spray material ejected through an atomizing nozzle of the gun and in order to support the transport of the spray material through the front piece. The control device comprises means for controlling the rate of introduction of spray material into the gun. As a consequence, the degree of atomization of the spray material leaving the front piece is variable.

Abstract: A plural component dispensing system includes supplies which furnish first and second components under pressure to a dispensing apparatus having first and second valves, respectively. Each of the valves includes a rotatable valve member in a combination retainer and seat. The valves are connected to first and second pinion gears, respectively, and a rack engages each of the pinion gears. The rack is attached to a piston which is disposed for reciprocation in a cylinder in response to fluid pressure on one side or the other of the piston. Actuation of the piston in a first direction provides paths for component flow through the first and second rotatable valve members and through first and second orifices, respectively, into a mixing chamber. The first and second orifices are disposed to provide impinging streams of the first and second components, the impingement insuring complete and thorough mixing of the components.

Abstract: A gun for mixing and dispensing plural component plastic materials, and for example as polyurethane foam, is provided with a purging device operable independently of the foam mixing and dispensing mechanism. The purging device comprises a rod, normally positioned rearwardly of the foam component inlet orifices and mixing chamber, the rod being selectively actuable independently of the foam mixing and dispensing operations, by a two way air cylinder controlled by the gun operator.

Abstract: A readily disassemblable gun for dispensing multiple fluidic components to a mixer includes a handle having an upper barrel. A head asembly is detachably connected to a rear end of the barrel. The head assembly extends flexible, fluid transporting tubes to a forward portion of the barrel and a detachable cap is secured to the forward end for defining an initial mixing chamber between the extended ends of the tubes and a conduit extending from the cap. Fluid components to be mixed are introduced from a supply source through individual tube communicating passages in the head assembly through the tubes to the initial mixing chamber. After initial mixing, the fluidic components are dispensed into an elongate mixer for additional mixing and ultimate discharge. A trigger lever is mounted on the handle and includes a member which normally deforms the tubes for preventing flow of fluidic components therethrough and into the initial mixing chamber.

Abstract: Valve assembly which mixes two components for delivery to a spraying apparatus. The assembly is comprised of a core valve mounted in a housing or body which is secured in a chamber in a manner which provides passageways between the housing and the chamber. A fluid is delivered to the core valve by a first conduitThe valve is also incorporated into a spraying apparatus with an internal fluid mixing chamber which simultaneously mixes two fluids, then delivers mixture to a nozzle for blending with another fluid component. The spraying apparatus is comprised of a gun body with an integral fluid mixing chamber, a nozzle body attached to the gun body, and a nozzle configured to blend two fluid components coming from the nozzle into a uniform spray. The nozzle body is connected to the gun body by a hollow tubular nut, having a threaded nipple as a conduit for delivery of a fluid.

Abstract: An easily cleaned trigger-actuated gun of simplified construction for applying a multi-component resinous patching or adhesive compound system to a workpiece is described. An internal valve positioner, connected to the trigger mechanism by means of an operating rod, regulates flow of compound from the gun, between zero, intermediate or full flow rates in response to trigger position, by adjusting clearances between simple flow checking ball elements and their valve seats at each component inlet into the gun. The metered components flow through a static mixer tube, onto the workpiece.

Abstract: Valve assembly which mixes two components for delivery to a spraying apparatus. The assembly is comprised of a core valve mounted in a housing or body which is secured in a chamber in a manner which provides passageways between the housing and the chamber. A fluid is delivered to the core valve by a first conduit attached to the housing, while air is delivered to the chamber by a second conduit coaxial with the first attached to the chamber. The core valve is operated by a plunger or push rod which opens the valve permitting the fluid to enter the chamber and causing it to be mixed internally with the air for delivery to a spraying nozzle device. The valve assembly is operated simultaneously with the vlaves of the spraying device and may be incorporated into the spraying nozzle device or provided as an attachment thereto.