Abstract: A rotary atomizing head type coating machine which is capable of washing deposited paint from fore end portions of outer peripheral surface of a bell cup. Thinner passages are provided on the bell cup to communicate a paint reservoir with the outer peripheral surface of the bell cup. Thinner which flows out onto the outer peripheral surface of the bell cup through the thinner passages is guided toward the marginal releasing edge of the bell cup. To this end, assist air is spurted out through assist air outlet holes which are provided in the fore end face of a shaping air ring at positions radially on the inner side of shaping air outlet holes. Accordingly, at the time of a washing operation, the thinner which has come out onto the outer peripheral surface of the bell cup is forcibly pushed on the outer peripheral surface by the actions of assist air and shaping air as the thinner is guided toward the fore end of the bell cup to wash away deposited paint therefrom.

Abstract: A sprinkler having an output orifice through which water operatively flows, includes a flush cap adapted for movement relative to the output orifice from a free position wherein the cap is disengaged from the sprinkler, to a locked position wherein the cap is generally fixed to the sprinkler and substantially covers the output orifice. The flush cap in the free position is angularly displaced in a single plane from the flush cap in the locked position. A deflector, disposed at an obtuse angle to the axis of the cap, biases the cap to the locked position during a flushing operation. Pulling grip portions of a handle also biases the cap to the locked position. An associated method includes the step of tilting the flush cap in a single plane in order to engage the sprinkler in the lock position.

Abstract: A heavy diesel fuel injection pump with precipitate build-up inhibiting features includes a pump body that defines a plunger bore. The plunger has a top end separated from a bottom end by a side surface, and is moveable in the plunger bore between a retracted position and an advanced position. A portion of the plunger bore and the bottom end of the plunger define a pump chamber containing heavy diesel fuel. The top end of the plunger is exposed to lubricating oil. The lubricating oil mixes with the heavy diesel fuel along a guide portion of the side surface of the plunger that has a tight clearance with respect to the plunger bore. At least one of the pump body and the guide portion of the plunger define a plurality of cleaning grooves located adjacent the guide portion.

Abstract: A suck back valve is equipped with a coupling having a fluid passage with a first port formed in one end, and a second port formed in another end thereof, a suck back mechanism for sucking a pressurized fluid inside the fluid passage under a displacement action of a second diaphragm which is displaced by a pilot pressure, and an ON/OFF valve disposed coaxially with the second diaphragm for opening and closing the fluid passage by displacement and movement thereof with the second diaphragm.

Abstract: Disclosed is an apparatus for forming a coating film for semiconductor processing, including a holder for holding a substrate, a coating solution supply device arranged to face one main surface of the substrate held by the holder and provided with a discharge port for supplying a coating solution onto the one main surface of the substrate, the coating solution forming a band-like stream having a width smaller than that of the substrate, a moving device for moving the coating solution supply device in parallel and relative to the substrate held by the holder to form a coating region and a non-coating region on the one main surface of the substrate, and a clearance retaining device for maintaining constant the distance between the discharge port of the coating solution supply device and the one main surface of the substrate.

Abstract: A suck back valve comprises a linear actuator which displaces a second diaphragm through a stem, an encoder which detects a displacement amount of the linear actuator, and a flow amount controller for controlling a pilot pressure supplied to an ON/OFF valve mechanism.

Abstract: The present invention provides a spray nozzle with both desirable aesthetic and functional attributes. The spray nozzle includes a central orifice and a plurality of blind recesses concentrically disposed around the central orifice, as well as an annular channel connecting all of the blind recesses. The recesses and the channel each individually provide desirable aesthetic properties, while in combination they each reduce the likelihood of product residue buildup in the other. The recesses interrupt the smooth walls of the channel to divert liquid product out of the channel before it can dry out.

Abstract: A suck back valve is equipped with a second valve by which a flow amount of a pressurized fluid, which is sucked by a third diaphragm, is electrically controlled based on an output of activation and deactivation signals from a main controller. The suck back valve further includes an encoder which detects a displacement amount of the third diaphragm, and outputs a detection signal thereof to the main controller.

Abstract: The present invention provides a dough transport device having an improved dough pump, an improved manifold for dividing dough, and a rotational cutter for cutting dough into pieces of uniform shape and size. The present invention also provides a method of using and cleaning a dough transport device.

Abstract: A suck back valve comprises a valve body including a fluid passage having a first port formed at one end and a second port formed at the other end, and an air supply port for introducing a pressurized fluid; a displacement mechanism provided displaceably at the inside of the valve body, for making displacement in accordance with an action of the pressurized fluid introduced from the air port; a first diaphragm coupled to the displacement mechanism, for making displacement integrally with the displacement mechanism; and a seat section provided to face to the fluid passage, for seating the first diaphragm or making separation from the first diaphragm.

Abstract: A suck back valve in which the response speed of a diaphragm is improved and in which control becomes assured, wherein there is no concern of changes occurring in an amount of sucked fluid, and wherein a system employing the suck back valve is kept small in scale, thereby enabling ease of installation.

Abstract: A spray device for use as an alternate water discharge to a faucet has a body with a handle and a spray head. The spray head has discharge openings therein. There is a trigger movable on the body between an off position and an on position. There is a chamber within the body which is in communication with a source of water under pressure and there is a water passage between the chamber and the discharge openings. A valve is movable within the chamber in response to movement of the trigger to connect the source of water under pressure through the chamber, to the water passage, and then to the discharge openings. The water passage is formed between closely spaced facing walls having a textured surface thereon to create adequate surface tension with water within the water passage, whereby water therein will not move to the discharge openings unless the water passage is connected to the source of water under pressure.

Abstract: A suck back valve includes a fitting having a fluid passage formed with a first port at one end thereof and a second port at another end, a valve actuator having a suck back mechanism for sucking a fluid from inside the fluid passage according to a negative pressure action of a diaphragm displaced by a pilot pressure, and first and second electromagnetic valves which increase/reduce the pilot pressure supplied to a diaphragm chamber in accordance with supply and discharge actions. A controller is provided for energizing and deenergizing the first and second electromagnetic valves, wherein said fitting, said actuator and said controller are assembled together as an integral unit.

Abstract: A self cleaning drip irrigation hose comprising an elongated strip of plastic film folded longitudinally to form first and second overlapping longitudinal margins. A first longitudinal bead partially seals the overlapping margin. A second longitudinal bead outboard of the first bead partially seals the overlapping margins. The first and second beads have a repeating longitudinal pattern that forms a flow regulating channel and opposing inlets spaced along the length of the first and second beads. Outlets from the flow regulating channel to the exterior of the hose are spaced from the inlets to create a pressure drop across the flow regulating channel. A third longitudinal bead outboard of the second bead completely seals the overlapping margin. The second and third beads form a water access channel to the inlets in the second bead such that the inlets in the first bead when plugged are back flushed by water flow through the inlets in the second bead.

Abstract: A suck back valve is equipped with a displacement speed regulating device made up of an ER (Electro-rheological) fluid filled in a chamber and whose viscosity changes in correspondence with the size of an external electric field, a coil member which generates the external electric field in response to an applied voltage, and a constriction which regulates a flow amount of the ER fluid between an upper-side chamber and a lower-side chamber of the chamber.

Abstract: A suck back valve is proposed, comprising a suck back mechanism for sucking a coating liquid inside a fluid passage under a negative pressure action of a diaphragm displaced by a pilot pressure, an ON/OFF valve for opening and closing the fluid passage under action of the pilot pressure, and a flow amount control device for controlling the pilot pressure supplied to the ON/OFF valve.

Abstract: A suck back valve is proposed which prevents change in the amount of fluid which is sucked by the suck back valve, and which improves response accuracy of a diaphragm, together with accurately controlling a displacement amount and a displacement speed thereof. A diaphragm displaceably disposed confronting an interior of a flow passage is formed from a first membrane and a second membrane stacked on the first membrane, wherein the first membrane is sucked into contact with the second membrane through holes defined in the second membrane, by activation of a negative pressure generating source which is connected to a chamber through a passage, and wherein the form of the first membrane is maintained by the second membrane.

Abstract: A suck back valve is proposed, comprising a suck back mechanism for sucking a coating liquid inside a fluid passage under a negative pressure action of a third diaphragm displaced by a pilot pressure, an ON/OFF valve for opening and closing the fluid passage under action of the same pilot pressure which is supplied to the suck back mechanism, and a fluid passage switching element for switching the pilot pressure supplied respectively to the suck back mechanism and to the ON/OFF valve.

Abstract: A suck back valve is equipped with a first flow amount control device for controlling a pilot pressure supplied to an ON/OFF valve, and a second flow amount control device for controlling a pilot pressure supplied to a suck back mechanism, wherein the first and second flow amount control devices are operated based on activating and deactivating signals output from a main controller.

Abstract: A hollow body having a nozzle opening (19) to discharge fluid as a jet or spray; the body comprising a first part having an inlet (12a) to admit fluid under pressure into the first part, and a second part (16) movable relative to the first part and said first and second parts are relatively movable from an abutting position in which they define therebetween the nozzle opening and a fluid feed passage (18) in the body and leading to the nozzle opening, and a cleaning position in which the fluid feed passage is split open longitudinally and the nozzle opening is split open to expose the nozzle and passage defining surfaces of said parts, for cleaning.

Abstract: A suck back valve is proposed which prevents displacement of a diaphragm due to pressure of a supply fluid, together with alleviating concern of changes in the amount of supply fluid which is to be sucked, and enabling ease of installation by making compact the system which employs the suck back valve. A diaphragm is displaced in the direction of arrow A under an activation operation of a linear voice coil type luffing device. Compressed air is introduced into a chamber, wherein the diaphragm is supported under an applied pressure. A coating liquid which is introduced through a fluid passage is supplied onto a semiconductor wafer from a nozzle. When an ON/OFF valve is activated and supply of the coating liquid is prevented, together with activating the linear voice coil luffing device and causing displacement of a plunger in the direction of arrow B, a poppet valve is displaced so that compressed air inside the chamber is output from a fluid output passage.

Abstract: A liquid filling nozzle plate is formed from a plate member provided with a plurality of through-holes. The liquid filling nozzle plate is attached to the lower end opening of a liquid filling tube of a liquid filling device. Liquid filling the liquid filling tube is prevented from flowing out of the tube and plate by surface tension in the through-holes of the liquid filling nozzle plate. The inner peripheral surface of each through-hole is provided with a circumferential projection projecting in a direction in which the inner diameter of the through-hole is reduced. The resulting cross-sectional configuration of the through-holes increases the surface tension of the through-holes to effectively prevent dripping of liquid from the through-holes. Dripping of liquid from the through-holes can also be prevented by providing through-holes having an elongated slit-shaped opening configuration.

Abstract: A method and apparatus for preventing nozzle clogging in systems for dispensing fluids that comprise a suspension or solution of solid particles in a volatile solvent, such as ink jet printing systems consisting of a control valve and a nozzle, the method comprising causing the solvent to withdraw from the nozzle by increasing diffusion of the solvent from the system at a point distal from the nozzle by means of inserting, between the nozzle and the control valve, a section of tubing that is semipermeable to the solvent, and the apparatus comprising the usual dispensing system with the addition of a semi-permeable tube between the control valve and the nozzle.

Abstract: A water purging system is disclosed. The system includes a primary water line having a first end with threads for the receipt of a faucet constituting a source of water and a second end with threads for coupling to a supplemental water line adapted to be purged of water after usage. An air tank is provided for the receipt of compressed air and for expelling the compressed air into the primary line and supplemental line after use of the system. The secondary line has a first end coupled with the air tank and a second end coupled to a central extent of the primary line. The secondary line also has a one-way check valve therein for the flow of air from the air tank to the primary and supplemental lines. Further included is a turbine having a first end operatively coupled to the air tank and having a second end operatively coupled to the primary line.

Abstract: A cartridge (2) secured for angular movement on the handset head (10) has a valve-like cooperation with openings (12) in the head (10) for water flow via passageways (20, 21, 22) in the cartridge (2) to showering outlets (30, 31, 32) on appropriate rotational setting of the cartridge (2). Cleaning pins (7) rotatable with the cartridge (2) and co-axially movable relative to it are operated by a cam track (8, 81) to penetrate fine spray outlets (32) to clean them of scale. The cam co-action of the pin ring followers (71) with the track (8) causes the pins (7) to remain inoperative during the showering modes but the pins (7) are operated for penetration by further turning of the cartridge (2) i.e. independently of the showering modes. The followers (71) are spring urged against the track (8) such as by resilient blades (75) bearing against the taper periphery (27) of the cartridge (2). Clearance pin penetration of the outlets (32) permits water flow to wash away scale and minimize back pressure.

Abstract: A cleaning cycle generator for an irrigation system having a programmable irrigation controller. When the irrigation controller terminates an on cycle, the cleaning cycle generator of the present invention will initiate a time delay after which it will turn the sprinklers completely on for a timed period. The sprinklers will then be turned off to complete the remainder of the off cycle. The present invention is particularly advantageous in pressure regulated irrigation valves where particles in the water can become trapped between valve seat surfaces that are in close proximity due to the pressure regulation. Leaking throughout the lengthy off cycle of the irrigation system is prevented by flushing out particles while the valve is in the completely open, unregulated state.

Abstract: A reversible spray tip holder for connection to a spray gun comprises a union with like quick-disconnect mounts on each of entry and exit ends for connecting to a mounting adaptor which facilitates connection to the spray gun. A base and a tip housing join by means of a base threaded bolt threaded into a matching tip housing threaded recess to comprise the union. In the tip housing is a tip receiver opening into the tip housing threaded recess on one end and extending to the tip housing exit end at its other end which is closed except for an aperture through which the tip receivable within sprays paint. A tip is received and sealed into the tip receiver, secured therein by the base threaded bolt, with a tip nozzle immediately adjacent to and directed through the aperture. A through passageway extends from the adaptor and spray gun through the base and tip housing to the spray tip. Diverging shields on the tip housing preserve an intended spray pattern.

Abstract: A shower head with a spray plate mounted on the housing has water passage openings and a further plate made of elastic material which has openings coaxial to the water passage openings. The further plate is fitted over the outside of the spray plate which presses against it. Nozzle projections with exit openings are formed coaxial with respect to the openings which have a smaller diameter than the water passage openings.

Abstract: The invention pertains to a process for the operation of a mouthpiece for the intermittent supply of an adhesive through at least one discharge opening to a surface moving with respect to this mouthpiece, where at least in the pauses between discharges, the edges of the discharge openings are sprayed with a rinsing medium. The invention also pertains to a mouthpiece for the application of an adhesive with one or more rinsing medium discharge openings situated upstream from the glue discharge openings. As a result of these measures, glue residues are effectively prevented from accumulating at the edges of the discharge openings.

Abstract: The showerhead of the present invention permits the removal of damaging water deposits, such as lime deposits, without causing damage to the surrounding showerhead portion on which the deposits are located. The showerhead includes a bottom portion with resilient extended portions associated with water exit ports of the showerhead wherein said resilient portions can be manipulated for removal of lime deposits from water. Specifically, the bottom portion of the showerhead may include a projection member extending along the periphery of the showerhead. The bottom portion may also comprise a membrane member including a plurality of water passage openings therethrough.

Abstract: An aerosol spray can nozzle cleaning system comprised of an adaptor for mounting on a pressurized aerosol spray can having a solvent formulated for a wide variety of materials. Preferably, solvent is a mixture of methanol, acetone, aromatic hydrocarbons and with a propane propellant. The adaptor is constructed to fit on the aerosol spray can of solvent and has a socket for receiving the spray tube of a clogged spray nozzle. The adaptor has a knurled surface to allow easy gripping with the fingers. The socket in the adaptor is constructed to receive and seal the spray tube of a spray nozzle to be cleaned. A clogged spray nozzle is cleaned by mounting it on the adaptor fitted on an aerosol can of solvent and pressing on the spray nozzle to force solvent through to clean clogged passageways.

Abstract: A rotary atomizing electrostatic coating apparatus includes a plurality of paint nozzles and a solvent nozzle. Each paint nozzle communicates uniquely with a respective paint source separate by respective paint passages which are pathwise separate from each other. In each paint passage, a respective paint valve is installed. When changing a painting color according to the present invention, the paint filling the operating paint nozzle and the paint passage connected thereto is not washed out by a washing solvent, so that the amount of paint wasted when changing the painting color is decreased to substantially zero and the working time period for changing the painting color is also shortened. A corresponding method of use of such an apparatus is also disclosed which reduces the amount of paint wasted and the amount of solvent used during a step of switching from a first paint to a second paint.

Abstract: A method and apparatus for metering highly viscous, paste-like material, in particular printing ink, e.g. offset printing ink, from a metering valve. The metering valve in dependence upon the determined quantity of material delivered into a container is closed and then the residual material left suspended at the outlet side of the metering valve is removed by a roller.

Abstract: An intermittent coating apparatus for intermittently coating a continuously running base member with a coating material includes a nozzle for discharging the coating material toward the base member and an absorption unit for controlling a flow of the coating material. The nozzle has a slit opened toward the base member and a manifold connected to the slit. The absorption unit includes a head having an inlet, an outlet, and a passage connecting the inlet and the outlet. The head is located in a housing. The absorption unit also includes a driving unit for sliding the head in the direction of a shaft located in the housing. By the sliding operation of the head, an absorption space is formed between an end face of the head and the manifold. In order to stop the coating operation, the supply of the coating material from an external supply opening to the inlet of the head is stopped by the sliding movement of the head.

Abstract: A self-unblocking spray nozzle 10,11 in which an easily removable insert 12 is automatically moved by fluid pressure to form a spray orifice 26, and expands resiliently when the fluid pressure is interrupted. The insert 12 may include swirl vanes 33 to rotate the fluid, and may operate with a static member 14 to form an automatic anti-drip valve.

Abstract: A method and apparatus are disclosed for capturing coating debris during laser ablation of a photoreceptor comprising: (a) enclosing a predetermined length of a coated substrate in a housing to result in an enclosed coated substrate portion, wherein there exists a gap between the enclosed substrate portion and the housing in communication with air outside the housing; (b) directing high energy radiation at the coating of the enclosed substrate portion; (c) directing a first fluid stream against the coating of the enclosed substrate portion to remove at least part of the coating in the form of coating debris during or subsequent to (b), whereby the first fluid stream may move a portion of the coating debris outside the housing in the absence of (d); (d) directing a second fluid stream against the first fluid stream in a direction effective for keeping the coating debris inside the housing, thereby minimizing movement of the coating debris into the air outside the housing; and (e) exhausting the coating debris.

Abstract: A method and apparatus are disclosed for capturing coating debris during laser ablation of a photoreceptor comprising: (a) enclosing a predetermined length of a coated substrate in a housing to result in an enclosed coated substrate portion, wherein there exists a gap between the enclosed substrate portion and the housing in communication with air outside the housing; (b) directing high energy radiation at the coating of the enclosed substrate portion; (c) directing a first fluid stream against the coating of the enclosed substrate portion to remove at least part of the coating in the form of coating debris during or subsequent to (b), whereby the first fluid stream may move a portion of the coating debris outside the housing in the absence of (d); (d) directing an annularly-shaped second fluid stream against the first fluid stream in a direction effective for keeping the coating debris inside the housing, thereby minimizing movement of the coating debris into the air outside the housing; and (e) exhausting t

Abstract: The dripper and mini-spray include an inlet and an outlet coupled to a housing which defines a substantially spherical, ellipsoidal, or cylindrical chamber. The chamber houses a ball which can roll about the chamber freely, but which is too large to exit through either the inlet or outlet. A whirlpool is caused by water or other liquids entering the chamber through the inlet due to the particular orientation and position of the inlet, the shape of the chamber, and optional water obstructing structures such as a reflector pad and a deflector ridge and slot openings therein. The resultant whirlpool(s) flush debris from the chamber and push the ball around the chamber for a predetermined period of time. The ball then becomes seated against the outlet to substantially obstruct the passageway out in a pressure-compensated manner.

Abstract: The dripper and mini-spray include an inlet and an outlet coupled to a housing which defines a substantially spherical, ellipsoidal, or cylindrical chamber. The chamber houses a ball which can roll about the chamber freely, but which is too large to exit through either the inlet or outlet. A whirlpool is caused by water or other liquids entering the chamber through the inlet due to the particular orientation and position of the inlet and the shape of the chamber. The whirlpool flushes debris from the chamber and pushes the ball around the chamber for a predetermined period of time. The ball then rests against the outlet to substantially obstruct the passageway out in a pressure-compensated manner.

Abstract: A semiconductor fabrication apparatus for forming a film on a wafer by a CVD method provides for easy removal of the dust generated in a film-forming chamber without reducing the uptime/downtime ratio of the equipment. The apparatus includes one or more gas dispersing devices having gas releasing surfaces for releasing a reaction gas to form a film on a wafer; one or more wafer holders having wafer mounting surfaces opposed to the plane defined by the gas releasing surface; and one or more cleaners, each having a suction port and a brush connected to the suction port, provided opposing the gas releasing surface. Either the cleaner or the gas dispersing device is moved so that the brush contacts and traverses the gas releasing surface.

Abstract: The dripper and mini-spray include an inlet and an outlet coupled to a housing which defines a substantially spherical or ellipsoidal chamber. The chamber houses a ball which can roll about the chamber freely, but which is too large to exit through either the inlet or outlet. The outlet includes a cradle which is formed with ridges and/or slots. The inlet of the dripper is horizontally attached to an irrigation line and with water pressure in the line the ball is forced against the cradle, effectively closing off the outlet, however some water is able to escape via openings formed by the ridges/slots. At the beginning of each irrigation cycle a small whirlpool is created in the chamber, pushing the ball about, which flushes out any debris which has accumulated in the chamber.

Abstract: Nozzles are provided for spraying a wetting medium into the gas flow in an activating reactor. The nozzle comprises a nozzle body having a plurality of nozzles The nozzle body is surrounded by a flexible and/or porous casing and a conduit introduces a gaseous medium into the casing. The gas can be introduced in either pulses or continuously. The gas introduced in pulses causes the casing to change its form and, where a perforated or porous casing is used, the continuous gas flow forms a protective gas film around the casing, thus removing the solid material accumulated on the casing.

Abstract: A self-cleaning spray nozzle and header system sprays liquid upon a predetermined area. As the liquids employed in such spraying operations are often contaminated by suspended particulate matter, blockages of the small nozzle orifice often occur. To clear such blockages and restore the nozzle to operation, a grooved piston forming part of the nozzle orifice is retracted from its seated position within the nozzle barrel. Once the piston is retracted, the barrel opens to its full diameter allowing lodged particles to be flushed away. Several nozzles mounted in tandem upon a fluid distribution pipe form part of a header system which can deliver, in the form of spray, large liquid volumes. The header system allows the self-cleaning function of several nozzles to be efficiently controlled by a single apparatus.

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 method and apparatus for delivering metered and atomized quantities of liquid to an internal combustion engine wherein the liquid is metered in a T-shaped fitting having a liquid supply arm, an air arm which is perpendicular to the supply arm, and a delivery arm is aligned with the supply arm. Liquid is pumped from a liquid source to fill the supply and part of the delivery arm of the T-shaped fitting. A predetermined pulse of pressurized air is delivered to the air arm of the T-shaped fitting, transversely striking and severing the accumulated liquid in the delivery arm from the liquid in the supply arm to form a liquid slug. The pressurized air pulse forces the liquid slug out of the T-shaped fitting into an acceleration pipe, accelerates the liquid slug through the acceleration pipe, stores kinetic energy in the moving liquid slug, moves the liquid slug through a nozzle, atomizes the liquid slug, and cleans the nozzle and preconnected passages of residual liquid.

Abstract: A method and apparatus for mixing and dispensing two fluids from a nozzle comprises a mixing chamber for the two fluids defined by the nozzle. A first fluid of the two fluids is sprayed into the mixing chamber from a first aperture within the nozzle and a second fluid from a second aperture within the nozzle is sprayed into the mixing chamber. The second aperture is oriented in a direction within the nozzle such that the fluid dispensed therefrom is incident upon the first aperture for cleaning the first aperture.

Abstract: An air supply and control assembly for use with a spray gun comprises an assembly to couple a first source of pressurized air which controls the needle valve of a spray gun to a pilot valve connected to a second source of pressurized air to control delivery thereof to the spray gun atomizing component. The assembly includes a manifold connected by one port to the first source of air, by a second port to components operating the needle valve, and by a third port to a coupling passageway connected to the pilot valve.

Abstract: A self cleaning, plug resistant, adjustable parameter feed distributing and delivery apparatus for a glass melter comprising a housing with a passage therethrough for a glass slurry, a cold finger within the passage for creating a dispersion pattern of the slurry, a movable slotted tube for controlling the confluence of air propellant and slurry in the passage, and a plurality of ribs that extend through the slots in the slotted tube to urge the slurry forward if it becomes stuck or resists forward movement. Coolant passages in the housing and the cold finger maintain the slurry temperature below that of the melter plenum. The cold finger is axially movable to adjust the dispersion pattern to the desired consistency. Other design features of size can be applied for use in situations requiring different parameters of pattern, particle size, rate, and feed consistencies. The device utilizes air as both a propellant and a surface cleansing mechanism.

Abstract: An ultrasonic cleaning apparatus and method is provided for a venturi flow nozzle which is mounted in a pipe having fluid flowing therethrough. The apparatus includes a plurality of ultrasonic transducers mounted in openings provided upstream of the venturi flow nozzle inlet. The transducers transmit ultrasonic waves directly into and thereby excite the fluid flowing through the venturi flow nozzle and create cavitation which cleans the nozzle. Additional transducers are preferably provided in the throat area of the venturi flow nozzle. In alternative embodiments, the transducers are mounted in high and low pressure taps associated with the venturi flow nozzle such that the transducers directly transmit ultrasonic waves into fluid flowing into the high and low pressure taps. The transducers may be mounted flush with the interior of the pipe or venturi flow nozzle, or the transducers may be mounted at a position spaced therefrom in the high and low pressure tap piping.

Abstract: A dripless spray nozzle for an intermittent or cyclical spraying operation providing a spray manifold having an inlet port for receiving a pumped material to be sprayed, such as pressurized lube oil, and an inlet port for receiving pressurized air, a mixing chamber for mixing the material and the air, an outlet for conveying the mixture to an attached spray nozzle for spraying an air/material mixture onto an object such as an air/lube oil mixture onto a wheel of a railroad transit car. The spray manifold further comprises a first check valve downstream of the mixing chamber, and a second check valve mounted in the material inlet port. The material to be sprayed is intermittently or cyclically pumped past the second check valve into the mixing chamber. Pressurized air mixes therein with the material and the mixture is sprayed past the first check valve. A reduction in pressure of the pumped material closes the second check valve.