Abstract: A photoresist supply amount controller is disclosed including: a connection pipe into which solution comes; a nozzle portion connected to one end of the connection pipe, the nozzle portion being hollow therein and made of electrically conductive material, the nozzle portion having a nozzle ball at its bottom; a core member installed to be raised or lowered in the nozzle portion, the core member being inserted in a tight contact with the inner circumference of the nozzle portion in order to selectively open and close the nozzle ball, the core member being made of electrically conductive material; a cylindrical electronic coil coupled to the outer circumference of the nozzle portion; a grip installed to penetrate the top center of the nozzle portion and having a spiral on its outer circumference.

Abstract: A nozzle actuating and adjustment system for applying sealant to a can lid member comprising a nozzle which has a sealant dispensing opening, a needle valve, a needle valve seat surface and a sealant flow passage for enabling flow of sealant material onto the lid member. The needle valve is selectively axially movable between an open sealant applying position and a closed non-flow position relative to the needle valve seat surface. A spring is operatively associated with the needle valve to normally hold the needle valve in the closed lowered position. A needle valve actuator solenoid is operatively connected to the needle valve for selectively causing axial upward movement of the needle valve from the closed position to the open position by a predetermined axial distance to provide a predetermined sealant flow gap in the nozzle to dispense a predetermined amount of sealant material during a predetermined dispensing time period.

Abstract: A conventional shower head is fitted with a tee fitting having a flow through passage and an additional tee passage within which a valve and control handle are supported. A flexible hose is coupled to a head assembly which includes an elongated handle and an elongated spray head. The handle defines an interior passage for coupling water under pressure from the flexible hose to the interior of the spray head. The spray head is elongated and defines angled facets each having a plurality of spray apertures formed therein. A valve slide shaped in correspondence to the interior of the spray head is slidably movable within the spray head. The valve slide defines a plurality of apertures corresponding to the apertures formed in the spray body. Volume of spray adjustment is controlled by the position of the valve slide with respect to the spray body. The angled facets of the spray head and aperture placement are configured to provide a hygiene device for cleaning the rectal area.

Abstract: A high pressure industrial washdown gun. The gun comprises a body having a hand grip portion, a trigger, a flow control valving system and a conduit for directing the water to the interior of the gun body. The valving system includes a containment sleeve, a connector, a nozzle assembly, a valving rod, and a central water flow passage extending therethrough. A tapered seat surrounds the flow passage. The valving rod includes a nose portion, an enlarged diameter head, and an elongated stem. The valving rod slides within a guide which positions it relative to the containment sleeve. A return spring is provided for the valving rod.

Abstract: In a high-pressure cleaner of the type comprisinga) a high-pressure pump (3),b) a motor driving said pump (3),c) a liquid supply (1,2) connected to the suction side (8) of the pump (3),d) a cleaning gun (4) connected to the delivery side (6) of the pump (3) through a delivery duct (10) and comprising a manually operable stop valve, ande) a bypass valve (16,17) adapted to in its open condition to allow flow frem the delivery side (6) to the suction side (8) of the pump (3),the main novel feature isf) flow-sensing mechanism (15,20) associated with the delivery duct (10) and adapted to open the bypass valve (16,17) when flow in the delivery duct ceases or decreases below a predetermined magnitude and to act upon it in the closing direction when flow is equal to or above the predetermined magnitude.

Abstract: A guide device of a spray gun includes a needle having a first end thereof inserted through a central hole of a nozzle and a second end of the needle retained in a first tube which has an inner threaded hole defined therein, a rod having a first end thereof threadedly engaged with the inner threaded hole so as to contact the head of the needle and a second end thereof movably connected to a trigger, a guide tube fixedly connected to the nozzle and having a passage defined longitudinally therein which communicates with the central hole of the nozzle, a plurality of grooves defined longitudinally in an outer periphery of the guide tube and each of which communicates with the central hole of the nozzle such that the needle is guided along an axis of the passage of the guide tube.

Abstract: A water flow control device including a control valve mounted in a casing and controlled by a control rod through an actuating rod to close/open the water discharging port, the control valve including a valve flap having a center hole and a plurality of axial ribs axially downwardly extended from the periphery of the center hole and being moved to close/open the water discharging port of the upright tube of the casing, an axle having a bottom end inserted through the center hole of the valve flap and a top end vertically slidably inserted into a downward bottom hole in the cup-shaped holder of the cup-like casing mounting base, a valve element fixedly mounted around the axle in the middle and moved with it to open/close the center hole of the valve flap, and a stem fixedly connected to the bottom end of the axle and moved by the actuating rod to lift the valve flap from the upright tube of the casing.

Abstract: An improved poppet valve seat having a predetermined through-bore restricting orifice operating in conjunction with a fluid diffuser and diffuser flow passages thereof reduce the velocity of fluid ejected from the spray gun below levels which are hazardous for potential injection into the skin of a user or the like when the spray tip and associated safety guards are removed from a spray gun. However, while the velocity of the paint passing through the spray gun is reduced to avoid the injection hazards, the atomization pressures required for cohesive and complete atomization of the fluid passing through the airless paint sprayer is maintained to provide an efficient and effective atomization of the fluid in an airless sprayer.

Abstract: A water discharge controlling structure of a sprinkling gun, in which a controlling bolt is slidably disposed in a barrel of the sprinkling gun and a nut is screwed with a rear end of the controlling bolt. The barrel has a rear end formed with two lateral axial shallow channels and two lateral arms of the U-shaped pushing plate are slidably received in the shallow channels. The pushing plate has a middle bridge portion formed with a key hole-shaped driving hole through which the controlling bolt is passed. The nut has a narrowed neck portion chucked in the key hole-shaped driving hole of the pushing plate. Each lateral arm has a free end formed with an outward bent engaging plate. A pivot seat is disposed on upper face of the barrel for pivotally connecting with two upward extending lugs of the trigger. Each lug is formed with an engaging slot for the engaging plate of the lateral arm of the pushing plate to engage therein.

Abstract: A poppet valve assembly wherein the valve stem is protected from water contact. The valve includes a housing, a valve stem reciprocable within the housing, and a valve seal over the stem. The seal is a boot or sleeve having a base end and a valve end. The base end is open and sealed about its entire periphery to the housing. The valve end seals against the end of the valve stem. The housing defines a valve seat, and the valve end of the seal includes a valve portion selectively engaging the seat. Preferably, the seal further includes a bellows portion along its length to bias the valve portion into engagement with the valve seat.

Abstract: A shroud and cartridge based shut-off for sprayers combine to provide for intermittent and continuous spraying. The shroud affords many different aesthetic possibilities including different colors and colors related to the color of the sprayer tank. The shroud includes an actuator lever for digitally actuating the shut-off valve intermittently. A thumb actuated latch locks the actuator lever in a depressed position for continuous spraying.

Abstract: A water flow control device which includes a cup-like mounting base fastened to the water discharging pipe of a water supply system, a casing fastened to the cup-like mounting base, a valve stem mounted inside the cup-like mounting base and the casing and moved to open/close the waster passage between the cup-like mounting base and the casing, a control rod mounted in the casing for moving by hand, a rotary actuating rod coupled between the valve stem and the control rod and moved by the control rod to force the valve stem into the open position or the close position, and a locating mechanism made on the inside of an upright inside tube inside the casing for holding the control rod and the rotary actuating rod in place.

Abstract: A spray head assembly (10) includes a motion transmitter (71) in a spray-head compartment (20) coupled between an actuator shaft (45) and a relatively-rigid valve shaft (100') for transmission of motion from the actuator shaft into axial motion of the valve shaft to thereby move a relatively-resilient poppet member (76'), against liquid flow, away from a valve seat surface (80) when the actuator shaft is moved. The valve shaft which is located in a valve-seat passageway (78) downstream of the poppet member, includes a relatively rigid separate flange (102) thereon extending radially outwardly from the valve shaft. The flange has a bearing face (116) for impinging on a sealing face (114) of the poppet member directed substantially toward the valve seat. The flange fits in a raised ring seal (77') on the sealing face and extends into the valve-seat passageway when the poppet member is seated to be closed. The flange has a tapered outer/upper edge (112).

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: An improved flow control mechanism for use in an automatic continuous flow liquid dispensing device for dispensing liquid through a dispensing output onto a receiving surface of an article, is disclosed. The improved flow control mechanism comprises a needle valve on a threaded elongate shaft, which shaft is threadably mounted on the dispensing device housing, for movement of the needle valve between a full flow position where the needle valve is retained in spaced relation with respect to the dispensing output opening so as to permit a full flow of liquid from the main chamber through the dispensing output opening, and a reduced flow position where the needle valve is retained in a reduced spaced relation with respect to the dispensing output opening so as to permit only a reduced flow of liquid from the main chamber through the dispensing output opening.

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 spray bar assembly (10) for a printing press (12) having a source of liquid, at least one nozzle (42) communicating with the source, a pair of opposed elongated side walls housing the nozzle (42), a support member extending along the side walls, and an end baffle extending between the side walls near an end of the side walls, with the baffle being movably mounted on the support member to longitudinally adjust the position of the baffle relative to the side walls.

Abstract: A high pressure cleaning device with a housing (1) containing a driving motor and a pump for cleaning fluid, in particular water, and a bypass valve arrangement, with a valve pistol (2) having a cleaning lance (3) or the like connected thereto, and with a high pressure line (4) leading to valve pistol (2) from a high pressure connection (4) on a housing (1). When the valve pistol (2) is closed, the pump continues to run and circulates, via the bypass valve arrangement, a finite, small volume of cleaning fluid. When the valve pistol (2) is in the closed position, a leakage flow passage having a very high flow resistance remains open, so that, even when the valve pistol (2) is in the closed position, a small leakage flow of cleaning fluid constantly drains out, and is replaced by a corresponding amount of fluid which flows in on the intake side of the pump and cools the circulating fluid.

Abstract: A water play toy includes a base and a platform pivotally secured over the base so as to be stepped on and pivoted. Several pairs of valves and nozzles are provided around the outer periphery of the toy between the platform and base with each valve positioned to be contacted by and depressed by the platform as the platform pivots onto such valve. Four spaced apart pivot members define eight primary axes over which the platform will pivot to open one, two or three of the adjoining valves at the same time. When the platform is stepped on within an area surrounded by the pivot members and with sufficient force, the platform is depressed vertically and all four valves are depressed and open. A simultaneous depression of all valves can be prevented by supporting the platform directly on the pivot members before activation.

Abstract: A picking device for a water-jet loom comprises a nozzle body connected to a pressurized water source and provided with a plurality of axial nozzle holes, a plurality of spools fitted respectively in the axial nozzle holes and each provided with an axial through-hole through which to pass a weft yarn, a spool driving mechanism for individually or sequentially driving the spools for axial reciprocation or for turning alternately in opposite directions within a fixed angular range, and orifice chips having orifices defining straightening spaces for straightening the flow of the pressurized water around the front ends of the spools together with the circumferences of the front ends of the spools. A fluid passage connected to each of the orifices can be opened and closed by axial reciprocation or by turning alternately in opposite directions in the given angular range of the spool.

Abstract: An improved apparatus for spraying hot melt adhesive includes a gear pump for providing a metered flow of hot melt adhesive. When a valve member is in a first position, a predetermined rate of flow of hot melt adhesive is conducted from the gear pump to a nozzle. When the valve member is in the first position, the valve member blocks a flow of adhesive to a recirculation passage. When the valve member is in a second position, the valve member directs the flow of adhesive from the gear pump to the recirculation passage and blocks a flow of adhesive to the nozzle.

Abstract: An apparatus and a method of injecting a liquid are provided, especially for the intermittent, essentially drip-free injection of a liquid into a waste heat removal system in a spacecraft. The injection apparatus includes a housing having an inlet, an outlet, a discharge channel communicating with the outlet, and a receiving chamber controllably communicating with the discharge channel. A piston is movably arranged in the housing to define a boundary of the receiving chamber. A valve arrangement operates in response to the motion of the piston to respectively open or close the path of liquid communication between the receiving chamber and the discharge channel. This apparatus carries out the method, whereby when delivery of injection liquid is to be stopped any liquid remaining in the discharge channel is sucked out into the receiving chamber. Then, when delivery of injection liquid is to be resumed, the retained liquid is moved from the receiving chamber into the discharge channel.

Abstract: An electrostatic spray gun comprising a housing (32) for receiving a replaceable collapsible container, a nozzle (39) from which fluid is to be sprayed, squeeze grip mechanism (36, 35, 34) for compressing the container to feed fluid to the nozzle and high voltage contacts (38a, 38b) for applying electrostatic potential to the fluid such that the fluid issues from the nozzle in the form of an electrically charged atomized spray, wherein the nozzle (39) forms or is fed by a resealable delivery valve having inner (11) and outer valve members (12) with fluid fed to a gap between them by the compression of the container, from which gap the fluid emerges to form the spray and the gap being closable, desirably with a wipping, fluid-cleaning action, by relative movement of the members.

Abstract: A die coater comprising a die composed of upper and lower mold-pieces which form a manifold and a slit extending from the manifold, a first paint supply pipe communicating with one end portion of the manifold, a second paint supply pipe communicating with another end portion of the manifold and a flow channel closing member disposed in the manifold in a fluid sealing state, the member being movable along the manifold.

Abstract: A cutting torch allows the preheat oxygen and fuel valves to remain in a preset position while the torch is off. The cutting torch has preheat oxygen and fuel cutoff valves mounted in line with the adjusting valves. The cutoff valves are both operated linearly, each having an axially moving plunger. An actuator simultaneously moves the cutoff valves between opened and closed positions. The actuator has a locking device to lock them in the opened and closed positions. A pilot flame igniter utilizes a piezoelectric crystal and a pilot fuel valve positioned side by side with parallel axes. An igniter actuator in a single stroke opens the pilot fuel valve and causes an electrical spark to ignite the pilot flame.

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: A valve assembly for a faucet is operated by an actuation lever(s) normally positioned to be engaged by a container, for example, into which water is to be discharged from the faucet. For normal operation the lever(s) is moved in a self-return range of about 10 to 50 degrees. The lever(s) can also be swung further to a fully-on position so that the faucet can function in the normal manner by its valve system. The lever(s) operate a cam which acts on a cam follower presented by a valve stem. Responsive axial movement of the valve stem in opposition to spring pressure opens a valve.

Abstract: An adjustable arc sprinkler nozzle comprises a nozzle body which has a plurality of radial channels for forming radial streams out of water flowing into the nozzle from a sprinkler body to which the nozzle is joined. A crown shaped deflector member includes a plurality of vertically extending fingers which operatively coact with the radial nozzle channels to restrict the amount of water flowing therethrough. A selectively operable adjusting member is cooperatively engaged with the deflecting member for moving the deflecting member vertically relative to the nozzle body to vary the position of the fingers relative to the channels to change the amount of water restriction imposed by the fingers on the water flowing through the channels, whereby the throw radius is selectively adjusted by vertical movement of the deflecting member. A selectively operable locking member, i.e.

Abstract: A device for controlling incoming/outgoing of water flow of a sprinkler, comprising a control tube, a control pin, a pushing block, a frame member and a spring, wherein the control tube has a water incoming end and a water outgoing end and an outer surface of the control tube is formed with a rectangular recess. A pin chamber is disposed at a middle section of the recess and extends downward therefrom. The pin chamber having a first side wall formed with a water inlet, a second side wall formed with a water outlet, and a bottom wall formed with a communicating hole. The control pin has a substantially semispherical head section and three projecting ring sections. Each ring section of the control pin is formed with an annular groove receiving a sealing ring. The pushing block has a bottom face formed with a depression, two lateral projecting ribs, and an inclined wall located in the depression. The frame member is formed with an elliptic hole and a rectangular peripheral groove surrounding the elliptic hole.

Abstract: A water sprayer comprising a body having an exit cone on the inside connected between a transverse chamber and an outlet hole and controlled by an expanded tip of a fluid control rod through a trigger to let water flow from the transverse chamber toward the outlet hole for discharge through a nozzle cap. The exit cone has a plurality of spaced, tapered grooves longitudinally formed around an inside surface thereof at one end and respectively connected to the transverse chamber, and a smooth circular orifice at an opposite end releasably sealed by the expanded tip of the fluid control rod and connected to the outlet hole. The expanded tip of the fluid control rod has an O-ring mounted on an annular groove thereon.

Abstract: A needle assembly for an airless spray gun is provided with a needle which is centerless ground and electropolished to greatly increase life. Further life enhancements are gained by use of a plastic needle bushing in the needle clamp and provision of a specific length to diameter geometry for the needle yields enhanced life as well.

Abstract: A nozzle mechanism (10) comprising a flexible barrel (13) annularly spaced about a fluid jetting tube (12) apertured as at (16) to a rear tubular portion (15), a manipulative sleeve (33) on the barrel (13), and a valve control member (24) to open and close its valve (28) aligned with aperture (16). Valve control member (24) includes a pin 29 operatively connected to the sleeve (33) via a slot (30) in barrel (13), so that manipulative motion of sleeve (33) opens and closes valve (28), as well as locking open valve (28) by reason of pin (29) being retained in a catch (31) on slot (30) in flexible barrel (13).

Abstract: A solenoid operated liquid spray gun for use in directing small volume, air atomized liquid at short operating intervals. The spray gun includes a housing having pressurized liquid and air inlets, a solenoid coil contained within the housing, and a fluid control module disposed within the solenoid coil for controlling the flow of liquid from the liquid inlet through a discharge nozzle. The solenoid coil and module further define an annular air passage within the housing for communicating pressurized air from the air inlet to the nozzle for facilitating atomization and direction of the liquid discharging from the gun.

Abstract: An improved hand held spray gun. The spray gun includes at least one manual trigger which when squeezed moves a valve needle to initiate fluid flow. A knob is provided to adjust the maximum fluid flow when the trigger is squeezed. When the trigger is released, a compression spring returns the valve needle to its closed position. An over travel spring is compressed only if an excessive force is applied to the trigger to prevent damage to the spray gun. The over travel spring is stronger than the valve needle return spring so that it compresses only after the spray gun is fully on. If the maximum fluid flow adjustment knob is turned too far, compressed air is vented through the knob as a tactile warning to the spray gun operator to not turn the knob further. The vented air also may whistle to provide an audible warning that the knob should not be turned further.

Abstract: An arcuate shield having a concave interior surface is formed as a semi-conical configuration having first and second side edges converging towards a forward edge. The shield structure is arranged to mount a pneumatic hose medially and in contiguous communication with an inner concave surface of the shield. A modification of the invention further includes fan blades arranged for mounting adjacent a rear edge of the shield structure to enhance coverage of the shield, as well as providing for adjustment to modify the arcuate configuration of the shield structure to afford adjustment of the confronting surface of the shield structure.

Abstract: In-line adjustable air flow gun is to be permanently installed in the air line, and used with other pneumatic air tools, such as sanders, die grinders, drills, impact wrenches, duel action sanders and spray guns. It's primary function is to blow away debris, by providing an adjustable air flow as is necessary to accomplish a large variety of different situations.

Abstract: An adjustable arc sprinkler nozzle comprises a nozzle body which has a plurality of radial channels for forming radial streams out of water flowing into the nozzle from a sprinkler body to which the nozzle is joined. A crown shaped deflector member includes a plurality of vertically extending fingers which operatively coact with the radial nozzle channels to restrict the amount of water flowing therethrough. A selectively operable adjusting member is cooperatively engaged with the deflecting member for moving the deflecting member vertically relative to the nozzle body to vary the position of the fingers relative to the channels to change the amount of water restriction imposed by the fingers on the water flowing through the channels, whereby the throw radius is selectively adjusted by vertical movement of the deflecting member.

Abstract: A shut-off valve assembly in a very high pressure water gun is provided with a valve member between a pressure chamber and an outlet chamber which produces a quick pressure induced snap-off action just before closing which securely seats the valve member against leakage and erosion. Shortly after cracking the valve to an open position the pressure induced force is relieved and the regular biasing spring offers the only closing force. An improved high pressure seal is configured to seal with a short stem contact area designed to significantly reduce friction. A special safety bleeder valve bleeds to atmosphere independent of starting pressure.

Abstract: A device for retarding drool from a multi nozzle manifold having a plurality of outlet passageways in fluid communication with a single feed passageway. A drool-retarding member selectively segregates the outlet passageways with respect to fluid communication among the outlet passageways, preventing flow from one outlet passageway into a lower outlet passageway during adhesive cutoff periods. The drool-retarding member is a reciprocating member having an inoperative position in which a plurality of inlet ports to the outlet passageways are sealed, and having a fluid-apply position in which the inlet ports are free to allow fluid communication among the outlet passageways and the feed passageway. In a passive embodiment, the drool-retarding member is a valve that is spring biased to cover the inlet ports. Pressurized adhesive overcomes the bias of the spring when an upstream flow-regulating mechanism is controlled to discontinue adhesive flow.

Abstract: The invention is directed to a process and apparatus for controlling reactor temperature and/or carbon and heat balance in a fluid hydrocarbon conversion and cracking unit. In particular, the invention is directed to a process wherein the introduction of feed into a conversion and cracking zone is effected by a feed injector which optimizes the atomization of the feed in order to achieve reactor temperature and/or carbon and heat balance control objectives. This invention is applicable to fluid coking, fluid coking with gasification, asphaltene residuum treating (ART), and other petroleum industry processes.

Abstract: A fast-actuating on-off valve and pressure regulator particularly well-suited for use with high-pressure incompressible fluids. An actuator, manually-operated or powered, provides a linear push-pull force to a valve stem assembly mounted inside a valve cavity having a fluid inlet and one or more fluid outlets. The valve stem assembly includes a valve stem that has a shoulder at one end. The valve stem assembly includes a stem collar having a capped end with a central hole to engage the valve stem, a cylindrical cavity to house the stem shoulder, and a threaded portion engageable with a valve poppet or a poppet extension. Each valve poppet has a threaded end engageable with the stem collar and a sealing end to engage with a fluid outlet centrally positioned within a valve seat or a valve poppet.

Abstract: A fluid ejection nozzle is disclosed which facilitates a wide distribution of fluid therefrom and which permits the fluid flow rate to be easily adjustable. The nozzle is particularly adapted to a heat rejection system useful in a space environment. The nozzle includes a flow distributor positioned within an orifice of the nozzle housing which is comprised of a tongue member and an attached flow control block. Adjustment screws mounted through the nozzle housing permit axial movement of the flow distributor within the housing, thus controlling the flow rate of the fluid even to the extent of total shut-off. The tongue member is shaped to widely disperse the fluid, and includes turbulence generators such as roughening or ridges for facilitating its dispersion.

Abstract: A hydraulic remote control device for a high pressure cleaner comprises a flexible hose (2) equipped with a control device (3) for starting and stopping the operation of the controlled apparatus (1) and, for example, a cleaning lance (4). A programming device (5) is also mounted in series with the flexible hose (2) upstream or downstream of the control device (3), as well as a treatment unit (6), permanently raising in a stepwise manner the pressure in the flexible hose (2) by means of a corresponding transducer (7). The treatment unit controls particularly the operation of a motor-pump group (8) feeding the flexible hose (2) with fluid under pressure, as well as the nature and composition of the fed fluid, as a function of the pressure or of the progression of the raised pressure in the flexible hose (2).

Abstract: A high velocity pneumatic device having particular use for excavating or dislodging soil. The device includes a body or housing having a passage that connects a source of air under pressure, such as a compressor, to an elongated discharge tube. A valve mechanism is disposed in the passage and controls the flow of air through the tube. Mounted in the distal end of the tube is a nozzle having an inwardly converging upstream and an outwardly diverging downstream end which increases the velocity of the air being discharged through the tube. A manually operable trigger is directly connected to the valve mechanism and actuates the valve to discharge air through the tube. The nozzle is formed of a non-sparking metal, such as brass, while the tube is composed of an electrically nonconductive material, such as glass reinforced resin.

Abstract: A device for dispensing a string or dab of liquid or plastic substance, such as putty, glue, paint or lubricant, to an object includes a pump for feeding the substance through a conduit to a nozzle having a fine discharge opening. A booster is connected to the conduit between the pump and the nozzle and a pressure medium is supplied to the booster. A substance control valve controls flow of the substance through the nozzle, the substance control valve being connected to the pressure medium and including a valve body which is biased in a closing direction by the substance and which is biased in an opening direction by the pressure medium via an actuator. The actuator includes a pressure member, one side of which is actuated by the pressure medium and the opposite side of which is actuated by the substance, the area of said pressure member being considerably larger than the area of said valve body. The device further includes a pressure medium control valve for controlling the substance control valve.

Abstract: A spray gun for use with a source of pressurized liquid provided through a supply hose is disclosed having a body with hose connection means at the rear portion thereof and a pistol grip-style handle extending therefrom. The body has a longitudinally passageway extending from the hose connection means to the longitudinally opposed fluid dispensing end of the body. Disposed within the passageway is a plunger, slidably movable between opened and closed positions to selectively allow the dispensing of fluid through the exiting end of the body. The plunger includes a longitudinally bore partially therethrough, the rear portion of the bore being in fluid communication with the hose connections means, and radial bores providing fluid communication between the front end of the longitudinal bore and the internal passageway of the body.

Abstract: Anti-spray fluid dispensing nozzle for filling an open top container. The nozzle comprises an elongated fluid supply conduit establishing a fluid path between a source of pressurized fluid and the container to be filled. First and second valves are mounted in the supply conduit disposed in a spaced apart relationship with the first valve positioned upstream the second valve. Each valve includes a movable closure member cooperating with a valve seat to control the flow of fluid through the supply conduit. The closure members of both valves are coupled to a common actuating rod mounted for linear movement within the supply conduit to selectively displace each closure member between a valve closed position and a valve opened position.

Abstract: A device for spraying of disperse systems, especially of graphite-containing lubricant dispersions, which consists of a spray head, an intake for a disperse system, with a plunger able to slide inside of the spray head in front of the opening of the hole type nozzle and a coupling connection to a supply element and in which the plunger exhibits one or more ducts which, going from the coupling side of the plunger through the plunger, comes out into a hollow space of the spray head.

Abstract: A spray valve is disclosed for controlling and directing the flow of a fluid. The spray valve includes an integral trigger/waterway, that is movable between an open and a closed position, and a non-movable fluid seal that plugs the end of the waterway to prevent the flow of fluid. A spring normally biases the trigger to the closed position. The force needed to activate the trigger is substantially independent of the water pressure flow and is defined almost exclusively by the force needed to compress the spring. The spray valve assembly is held together by an integral snap-fit construction, eliminating the need for fasteners such as screws, pins, or the like. The spray valve includes a spray cap that provides a variety of spray patterns. At least one of the bores in the spray cap which is used to produce a coarse spray is also used to produce a mist, so that a conventional bore having a relatively small diameter for producing a mist is not required and the likelihood of clogging is reduced.

Abstract: An improved hand held spray gun. The spray gun includes at least one manual trigger which when squeezed moves a valve needle to initiate fluid flow. A knob is provided to adjust the maximum fluid flow when the trigger is squeezed. When the trigger is released, a compression spring returns the valve needle to its closed position. An over travel spring is compressed only if an excessive force is applied to the trigger to prevent damage to the spray gun. The over travel spring is stronger than the valve needle return spring so that it compresses only after the spray gun is fully on. If the maximum fluid flow adjustment knob is turned too far, compressed air is vented through the knob as a tactile warning to the spray gun operator to not turn the knob further. The vented air also may whistle to provide an audible warning that the knob should not be turned further.