Abstract: A pressurized construction adhesive applicator system is provided that is able to apply adhesive to vertical surfaces without foaming, solvents, or resort to mechanical pumps. The pressurized construction adhesive applicator system including a canister having a volume, a one- part curable construction adhesive in the volume a lid forming a seal with said canister, an applicator wand having a trigger in fluid communication with the one-part curable construction adhesive via a tube, and a pressurant in the volume in an amount sufficient to urge the one-part curable construction adhesive from the volume and out of a nozzle of the applicator as a bead with depression of the trigger.

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 paint spray gun includes a gun body formed as a unitary one piece structure composed of a tubular body portion, a valve connection portion, an air passageway portion and a feed connection portion. A spray cap is disposed on the tubular body portion and has a cap opening. The tubular body portion has an air chamber that is covered by the spray cap and that communicates with said cap opening, and a feed passage connected to the chamber. The valve connection portion, the air passageway portion and the feed connection portion are formed as one piece with the tubular body portion without welded joints.

Abstract: The invention relates to a low energy spray gun for spraying thin film materials with a thickness of <40 microns such as high performance, thin viscosity nano-paints, lacquers, varnishes and the like. The spray gun comprises a main body (12) having a fluid inlet (14a) connected to an external fluid source (not shown) and a fluid outlet nozzle (16a). Gas outlets (16b-d) on the main body carry entrained fluid droplets emitted from the fluid outlet (14a) the shape of which are controlled by horn outlets (24) positioned beyond the fluid outlet (14a) and gas outlets (16b-d). First and second gas conduits (20, 22) are connected between a common gas inlet (18) and gas outlets (16b-d) and horn outlets (24) respectively. The cross-sectional area of a portion of the first gas conduit (20) is reduced relative to that of the second gas conduit (22) thus creating a pressure drop and a discernible improvement in fluid atomisation.

Abstract: A cosmetic portioning machine is provided having a mixing chamber, with a plurality of radially-disposed inlets, each of which provides an ingredient. A piston disposed in the mixing chamber defines a mixing volume. A dasher may be disposed in the mixing chamber to mix the ingredients together in the mixing volume so as to form a cosmetic. When the cosmetic product is thoroughly mixed, the piston urges the product out of the mixing chamber and through an outlet. A moveable sealing member is configured to pass through the outlet so as to seal off fluid communication between the mixing chamber and the outlet and to urge any remaining cosmetic product through the outlet.

Abstract: A spray gun for dispensing fluids is provided. The spray gun provides a plurality of trigger members for activating a valve of the gun and enabling dispensation of a fluid. At least some of the trigger members can be provided in force transmitting communication with at least one additional trigger member, such that activation of any one or more of the trigger members is capable of enabling dispensation of a fluid.

Abstract: Examples are provided that describe a linear hydraulic valve. In one example a linear valve comprises a sleeve with a plurality of ports spaced apart from each other at a distance. The plurality of ports are associated with a plurality of pressurized fluids. A spool comprising a plurality of openings that correspond to the plurality of ports is provided within the sleeve. The plurality of openings are spaced apart in a manner that enables alignment of a given opening of the plurality of openings to a given port of the plurality of ports based on a given position of the spool within the sleeve. The linear valve comprises an actuator for moving the spool in a forward or reverse linear motion along a longitudinal axis of the sleeve. The spool may be moved to a given position based on selection of a pressurized fluid of the plurality of pressurized fluids.

Abstract: A method of using a putty in a mechanical processing method includes dosing a binder component comprising at least one epoxy resin, dosing a hardener component comprising at least one NH-group-containing compound, mixing the binder component and the hardener component into a putty mass, and applying the putty mass on an undercoat. At least one of the binder component and the hardener component comprises synthetic hollow bodies so that the putty mass comprises 0.1 to 15 wt.-% of the synthetic hollow bodies relative to a total weight of the putty mass.

Abstract: A spray gun extension adapter allows a user to extend the reach of a spray gun. The adapter includes a mount shaped for receiving the spray gun. The adapter includes an adapter handle shaped to be gripped by a user. An adapter trigger is linked to an adapter actuator that operates the spray gun when the adapter trigger is engaged. The adapter actuator is positioned on the adapter to engage the spray gun trigger in some embodiments.

Abstract: An apparatus for conveying, and optionally mixing and conveying a building product such as a sealant, a mastic, paint or the like is provided.

Abstract: A foam spray gun is illustrated in which a third hose is attached to the gun for the application of either a liquid or a gas.

Abstract: This invention is directed to a method for producing a coating layer of a coating composition comprising two or more components. The two or more components are mixed post atomization. This invention is further directed to a method for producing a layer of a coating composition comprising a first component and a second component on a substrate using the spray gun.

Abstract: An outflow switch mechanism of a multi-function shower head includes an inner body, a button, a return spring, a valve shaft, a water division plate, a support press spring and a cover. The inner body has a valve chamber therein. A valve path for accommodating the valve shaft is between a seat and a chamber. The lower portion of the valve path is formed with an enlarged seat having longitudinal sliding grooves. The lower portion of the valve shaft extends into the enlarged seat. The bottom of a projecting rib formed between the sliding grooves has a gradient guide surface. The water division plate is formed with tooth blocks corresponding to the sliding grooves. The top of the tooth blocks has a gradient surface facing the gradient guide surface of the projecting rib. A magnet is fixed on the water division plate. A magnet is also provided on the cover.

Abstract: A large diameter mid-zone air separation cone is provided for decreasing NOx during burner operation by expanding the internal recirculation zone (IRZ) at the burner exit. The mid-zone air separation cone has a short cylindrical leading edge that fits in the outer air zone of a burner. The mid-zone air separation cone splits the outer air zone secondary air flow into two equal or unequal streams depending on the position of the air separation cone with respect to the outer air zone, and deflects a portion of the secondary air flow radially outward. Since the radial position of the air separation cone is farther from the burner centerline, the IRZ size is expanded and NOx emissions are minimized.

Abstract: An apparatus for failsafe control of liquid material passage through a line is provided. The apparatus includes a dispensing control unit for coupling to the line, which includes a housing having an inlet, an outlet, and a conduction port extending therebetween for selectively passing the liquid material received from the line therethrough. A control port is disposed in the housing to direct a flow path of at least a portion of a pressurized fluid stream received thereby. A response valve portion also disposed in the housing is reconfigurable between first and second states responsive to the pressurized fluid stream directed thereto, such that in the first state it seals the conduction port against passage of the liquid material, and in the second state opens the conduction port for passage of the liquid material. The response valve portion is resiliently biased to the first state.

Abstract: A spraying device for multiphase material, comprising: a cylinder, a pair of liquid-conveying pipes, a pair of material-conveying pipes, a nozzle, a pair of switches, at least one pair of storage chambers, a pair of valves, a mixing chamber, and a conveying pump; wherein the conveying pump is connected to the storage chambers via the liquid-conveying pipes, the conveying pump, the switches and the valves control material transmission of the material-conveying pipes, the conveying pump is connected to the mixing chamber via the material-conveying pipes, and the mixing chamber is disposed in front of the nozzle.

Abstract: A system and method are provided for failsafe storage and dispensing of a liquid material from a container having a storage compartment. A dispensing control unit coupled to the container includes a control valve portion operable to selectively direct a flow path of at least a portion of a pressurized fluid stream received thereby, and a response valve portion coupled to the neck portion. The response valve portion is reconfigurable between first and second states responsive to the pressurized fluid stream as directed thereto. The response valve portion in the first state seals an access opening of the container from the storage compartment, while in the second state maintains the access opening in communication with the storage compartment. The response valve portion is resiliently biased to its first state, whereby release of the liquid material therethrough is prevented in the absence of suitable fluid pressure actuation therefor.

Abstract: A plural component spray gun (1) is designed for spraying quick setting materials such as foams, polyurea and the like. Towards this end, the gun (1) is designed so as to be easily serviceable with a minimum of tools. For example, the side seal cartridges (18) and (20) may be installed and removed without tools by removing the retaining ring (9) and then extracting them from the fluid housing (11). Those cartridges (18) and (20) are easily disassembled and cleaned. Similarly, the fluid housing (11) may be removed from the handle/body (1) by unscrewing the lock ring (7) by hand.

Abstract: A system and method are provided for selectively containing and dispensing a predetermined liquid material in and from a source container in failsafe manner, wherein a housing is disposed to receive a pressurized fluid stream, and a selectively operable valve assembly is disposed in a flow path defined in the housing. The housing includes an inlet, an outlet, and an intermediate portion extending therebetween, which is formed with an admission port for admitting the predetermined liquid material. The valve assembly is disposed between the housing's inlet and outlet, and may be selectively operated to alternatively open and close access of the predetermined liquid material into the housing. The valve assembly is operably actuated responsive at least in part to the pressurized fluid stream in the flow path, whereby admission of the predetermined liquid material into said housing is keyed by introduction of the pressurized fluid stream into the flow path.

Abstract: In a spray gun (1) for atomizing fluids, that can be actuated using a lever (15) mounted in a pivoting arrangement on a sleeve (11) which accommodates an atomizer nozzle (12) and in which the air flow can be generated by an air turbine (5) that is assigned to the spray gun (1), the air turbine (5) and its electric drive motor (4) are arranged substantially coaxially to the sleeve (11) on the opposite side of a handle (21) and the air flow is supplied from the air turbine (5) in a substantially straight line through the sleeve (11) of the atomizer nozzle (12). The air turbine (5) is provided with a muffler (6). Loud operating noise of the air turbine (5) does not have a disruptive effect and practically no flow noise is generated due to deflections of the air flow. The components of the spray gun (1) are arranged in such a way that no more than slight tilting torques are generated, permitting work over long periods without leading to fatigue.

Abstract: A plural component spray gun (10) is designed for spraying quick setting materials such as foams and the like. A mix module (14) plastic material provides at least twice the life with ½ the wear of currently marketed mix modules and is made of poly ether ether ketone reinforced with graphite and PTFE lubricants.

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: 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: 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 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 premix burner apparatus includes a burner structure and a firing rate control system. The burner structure defines a premix reaction zone configured to communicate with a process chamber. The burner structure further defines a plurality of separate entrances to the reaction zone, and a corresponding plurality of separate premix flow paths, each of which is configured to direct both oxidant and fuel to a respective one of the entrances to the reaction zone. The firing rate control system is operative to control flows of oxidant and fuel along at least one of the flow paths separately from flows of oxidant and fuel along at least one other flow path.

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 hand held blow gun is designed to help dental lab technology wash, rinse, and dry a prosthesis using one hand. High pressure air (100 p.s.i.) is needed to clean the work piece. Next a wash and finally an air dry process is needed. The vapor blaster is a one piece hand held device having a single thumb actuated lever to progressively depress first an air valve and then a water valve. The invention is powered by a high pressure gas source connected to a high pressure regulator. The high pressure regulator is connected to the hand held blow gun and to a second low pressure regulator connected to the remote second water bottle. An optional second water bottle is shown to select a cleaning solution cycle with T switches.

Abstract: An air assist atomizer is used for obtaining a desired air flow through a fuel injector, the fuel injector having an injector valve stem, and the injector valve stem movable over a displacement. The air assist atomizer has an air passage via which atomizing air enters and a fuel passage via which atomized fuel exits. An injector seat is mounted on a spring for holding the injector seat to the injector valve stem over the displacement. The injector seat is allowed to travel part of the displacement of the injector valve stem, whereby when the injector seat moves, the air passage is opened allowing bypass air to atomize the fuel. A mechanical stop is provided for halting movement of the injector seat, while the injector valve stem moves the remaining distance of the displacement, opening up the fuel passage.

Abstract: The invention is directed to an improved pneumatic valve for use in paint spray guns of the type having a pneumatic trigger operating mode. When actuated by a trigger, the valve vents a pressurized chamber in the spray gun, causing a piston to move to open air and fluid valves for initiate spraying. The pneumatic valve is in the form of a snap in module which is easily replaced without the need to remove the spray gun from the spray booth and without the need to replace a number of small parts. A small return spring and the pressurized air urge a valve poppet to a closed position. When the trigger is operated, the poppet is unseated to vent the pressurized chamber in the spray gun. The flow of air through the valve during painting prevents dirt and paint overspray from accumulating on the valve.

Abstract: A high-volume, low-pressure spray gun operates from a conventional high pressure compressor. The gun has a barrel that supports a spray head, a handle that extends downwardly from the barrel, an inlet port at the bottom of the handle for receiving compressed air, and a passage in the handle directing compressed air toward the barrel. A venturi is mounted within the barrel and discharges a stream of compressed air downstream toward the spray head. The venturi entrains ambient air through orifices in the barrel. A valve mounted within the handle and operated with a trigger controls the flow of compressed air through the gun. The venturi is entirely separate from the trigger and the valve, and no complex linkage couples the trigger and valve, greatly simplifying construction. The venturi may be sealed to the passage in the handle to receive compressed air, and may be spaced from the barrel to allow entrainment of ambient air from the rear of the barrel.

Abstract: A spray gun includes a barrel portion and a handle portion having a control lever pivotally mounted to a lower end of the handle controlling a valve system. The spray gun includes an interchangeable fitting for receiving two fluid lines. The lever is movable between a first lockable spray position, opening the valve system to spray one fluid, and a second spray position spraying two fluids.

Abstract: A mixing and dispensing gun with a valve body containing a pair of liquid inlets, a pair of separate liquid outlets, a gas outlet and a removable mixing and dispensing nozzle. The nozzle contains the ingredients while they are being mixed and a gas outlet is positioned within the nozzle so as to propel the mixed ingredients to the application area. The nozzles and gun body include cooperating inlet and outlet ports such as nipples and recesses to permit alignment and sealing when the nozzle is positioned for use. The gas valve is arranged so that it may be operated simultaneously or in sequence with the liquid valves.

Abstract: A device for applying flux to the rear of a printed circuit board loaded with electronic parts on the front thereof and being transported by spraying the flux. The device has a single nozzle which is movable in a reciprocating motion in a direction perpendicular to the moving direction of the circuit board, thereby applying flux to the entire rear surface of the circuit board in a uniform distribution. The range of reciprocation of the nozzle is controlled on the basis of data generated by a sensor which is responsive to the width of the circuit board in transport. A flux feeding device capable of adjusting the amount of flux to be sprayed from the nozzle and a device for preventing the nozzle from being stopped up are associated with the flux applying device.

Abstract: An improved high volume/low pressure spray gun for spraying liquids such as paint. The spray gun includes a nozzle for mixing a liquid, such as paint in a solvent carrier, with a higher-than-atmospheric pressure gas, such as compressed air, and projecting the mixture towards the surface to be coated. The liquid is conveyed to the nozzle through a tube. A valve, ordinarily operated by a manual trigger, turns liquid flow on or off. Compressed air is conveyed through a hose to a vortex tube, then from the vortex tube to the nozzle. The vortex tube receives compressed gas at a selected temperature, ordinarily room temperature, and divides it into a high volume warm stream sent to the nozzle and a cool stream which is ordinarily exhausted to the atmosphere. The resulting high volume, low pressure, warm propellant air produces improved painting quality with less overspray.

Abstract: A device for the combined blowoff of fuel and air for direct fuel injection systems in internal combustion engines. The device includes a housing having a fuel connection and an air connection as well as a blowoff aperture connected with both connections and closable by electromagnetically operable valves. A fuel valve is arranged behind an air valve, also opening toward said blowoff side of said blowoff aperture. Both valves are arranged concentrically relative to each other and capable of resting with their valve seats sealing against the housing.

Abstract: A handle operated flow control valve has a body that defines first and second spaced inlet passages that extend from spaced first and second inlets and join in the vicinity of a first flow control valve for ducting pressurized flows of fluid from one or both of the inlets into an outlet passage for discharge through a nozzle. The first flow control valve has a first valve stem that moves in response to operation of a trigger handle. When the trigger handle is operated relatively gently within an initial range of movement, only the valve stem of the first flow control valve is moved out of its closed position, whereby a controlled flow of a first fluid such as pressurized water is ducted from the first inlet passage into the outlet passage for discharge.

Abstract: A spray head (10) for a spraying device operated by pressing down an actuating cap (70) against the initial tension of a spring (30) allowing to atomize and focus-spray a sprayable and preferably liquid product by compressed air. The spray head is provided with a spray nozzle (58) wherein the compressed air and the product, up to here transported in two different canals, through an ascending tube (50) immersed into a product container, are mixed, atomized and focus-sprayed. Spray head (10) shows two separate valves with initial tension in closing position (22; 24) of which the first valve (22) is positioned in a passage canal of the air pressure canal forwarding the compressed air to the spray nozzle (58) and the container interior, and the second valve (24) is positioned inside the product canal by which the product is transported through the ascending tube (50) from the container to the spray nozzle (58).

Abstract: A pneumatic spray gun (10) having a mixing assembly (14) including a resin valve (18) and a catalyst valve (20) formed by valve passages (44,46) formed in a valve rotor (36). A pneumatic trigger assembly (24) and slide assembly (28) control rotation of the valve rotor to open the resin valve momentarily before the catalyst valve. A distribution plate (174) distributes the catalyst within the resin before the mixture flows into a mixer (22).

Abstract: A spraying device includes a cap and two barrels coupled to form a structure. Compressed air can be supplied from the rear end of the structure. A cup for containing paint materials is coupled to the front end of the structure. A nozzle is disposed in the cap for controlling a passage of the paint materials. A valve device is actuated by a knob to open an air passage of the structure. When the knob is pushed rearward, the valve device is opened so that the compressed air may flow out of the cap, and when the knob is further pushed rearward, the nozzle can be opened so that the paint materials can be sucked to flow out of the cap when the compressed air flows out of the cap.

Abstract: An improved control shaft seal and air valve for a portable paint gun with the seal having a radial clearance with the shaft except at a shaft sealing surface of limited axial length. The shaft seal has a conical surface radially outward of the shaft sealing surface to provide a sealing surface and also to provide transfer of axial forces at that surface to a radial direction to provide a force to urge the shaft sealing surface against the control shaft. A second conical surface of the seal provides for retention of the seal on an air valve spring when the paint gun is disassembled. An improved air valve for portable paint guns is also disclosed having a rigid axial hub and radial support carrying a relatively flexible rim portion adapted to engage a tapered seating surface in the gun.

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.

Abstract: Valve means for use in a co-injection nozzle of a multi-polymer injection molding or blow-molding machine wherein the nozzle has an axial or cylindrical central channel, comprised of an elongated sleeve having an axial central passageway and a port in its side wall and axially-reciprocable within the nozzle central channel, and, either a solid pin within and fixed relative to the sleeve, or, more preferably, an elongated pin axially-reciprocable within the sleeve central passageway, the sleeves and pins each mounted in close tolerance slip fits to prevent any significant accumulation or passage of polymer melt material.

Abstract: A wax spray gun and spray nozzle for discharging an atomized stream of molten wax onto a vehicle body component or other substrate comprises a gun body having an atomizing chamber within which an internal wax spray nozzle and atomizing cap are located. A stream of atomizing air is tangentially directed into the atomizing chamber to form a rotating, swirling stream of atomizing air which is accelerated through a venturi inlet formed in the atomizing cap to impact and thoroughly atomize molten wax discharged from the internal spray nozzle. The atomized stream of molten wax is then discharged from the gun body into an external nozzle which preferably comprises a nozzle body having a wall formed with external threads which carry a coil spring. A flat is formed in the wall of the nozzle body with a discharge opening therein over which at least two spaced spring wires are positioned in the path of atomized molten wax emitted from the discharge opening.

Abstract: A dual-fuel injector is provided which allows precisely controlled injection of liquid and slurry fuels into an engine or the like, which prevents separation of solid material from the liquid carrier in the slurry fuel, and which prevents abrasion of selected surfaces of the injector by the solid material. The preferred injector includes a housing and an electronically actuated liquid and slurry fuel assemblies. In operation, pressurized liquid fuel supplied to the injector is used to amplify the injection pressure of the respective fuels for discharge through respective nozzles. The slurry fuel is continously circulated through the injector to prevent separation of the solid material from the liquid carrier and liquid fuel is used to purge selected surfaces of the injector to prevent the abrasion thereof by the solid material in the slurry fuel.

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 circuit for controlling operation of valves which supply atomization air and pattern shaping air and coating fluid to a spray gun. In response to a trigger signal, air is immediately supplied to the spray gun. After a predetermined time delay, fluid is supplied to the spray gun. Fluid continues for the remainder of the duration of the trigger signal and air is continued for a predetermined time after the trigger signal has ceased.

Abstract: A fuel injector for an internal combustion engine includes a body having fuel and air inlet ports and fuel and air outlet ports located within the combustion chamber of the engine cylinder. A pair of valves open and close the air and fuel outlet ports and are sequenced so that fuel is introduced into a flow of air and the flow of air continues briefly after the fuel flow has been discontinued.

Abstract: An air assisted hydraulic atomizing spray gun for liquid coating materials is characterized by an adjustable air/fluid turn on timing sequence which allows the air to be selectively turned on before, at the same time as, or after the fluid.

Abstract: A feed device for automatically controlling the operation of a snow gun, the device having an axially displaceable slide to selectively feed air and water under pressure to the snow gun and bleed water from the device, the device incorporating a control system including a geared motor for moving the slide, a conversion module for operating the geared motor in accordance with the outputs of sensors positioned to determine outlet water pressure, temperature and humidity at the site of the snow gun, the conversion module being operatively connected to a central computer adapted to control the operation of a series of snow guns and feed devices located along a ski slope.