Abstract: A Vacuum Relief Assembly for I.C. Engine Intakes is disclosed. Also disclosed is a device that permits outside air into the intake tract of an internal combustion engine in the event of an excessively high vacuum condition within the intake tract. Furthermore, the device is constructed from durable materials and resists the excessive temperatures found in the engine compartment of a vehicle. Still further, the device is made from two half-cylindrical sections that mate to one another around the intake tract to form a cylindrical attachment. The method of installation enables the device to be installable onto the intake tract in situ, and without the need to cut out a section of the tract.

Abstract: A shaft part is coaxially provided within a pressure release port provided in a sealing plate sealed to an opening portion of a case for a condenser or a battery, a valve body closely fitted and fixed within the pressure release port has a seal lip which is directed toward the outside of a pressure container and is closely contacted with an outer peripheral surface of the shaft part with predetermined tensional force, and in the case that internal pressure of the case is increased more than a predetermined value, the seal lip is operated so as to open the valve, thereby releasing the internal pressure to the atmospheric air.

Abstract: A check valve is placed in a conduit for pressurized fluids, and comprises a cylindrical external housing having inlet and outlet ends, a cylindrical internal spigot, and an elastomeric sleeve fitted over the spigot. It is sealed at the second end, and has a plurality of radially directed vent apertures along its length. The elastomeric sleeve is securely fitted to the internal spigot, in the region of the first, inlet end. The elastomeric sleeve has an internal diameter and an elastic memory such that it fits and adheres snugly to the outer periphery of the spigot, and its elasticity is overcome at a positive gauge pressure of between 5 and 20 psi so that pressurized fluid will flow from the vent apertures. Backflow of fluid at substantially zero or negative gauge pressure is precluded.

Abstract: A collapsible dispensing system for flowable materials is disclosed. A conical one-way valve assembly of coaxially conforming parts is attached to a collapsible container. An enclosing sleeve seals an elastomeric sheath to a valve body. Flowable materials are dispensed under positive pressure without back flow of external gases and contaminants, even after repeated dispensing of container contents. This enables flowable materials that are susceptible to oxidation and contamination to be reformulated without antioxidants and/or preservatives. The collapsible multiple dose dispensing system maintains the integrity and sterility of flowable materials, thereby prolonging product use life. The system takes advantage of a conical design, allowing for quicker, easier and cheaper manufacturing and assembly.

Abstract: A multi-channel valve having a valve seat, a valve seal, and valve seal housing. The assembly of the apparatus creates a plurality of inlet, exit, and cross channels enclosed by elastomeric portions of a valve seal. The elastomeric portions of the valve seal create bounded distensible chambers. Pressure exerted by a fluid in excess of the cracking pressure of the seal tends to distend portions of the elastomeric seal and allow flow through and into the chambers. When inflow pressure falls, the elastic rebound of the elastomeric portions of the seal tends to expel fluid from the valve without backflow. Cross channel capacity allows mixing of the fluids. The plurality of, and differentials between, chambers allows one fluid to completely purge the valve of other fluids. The valve may be configured with additional backflow prevention capacities, such as channel variations, secondary elastomeric members, and variations in primary membrane properties.

Abstract: A method and arrangement to accomplish a self-acting function of one way flow in a conduit with minimal flow resistance is disclosed. A one way valve, which in an unaffected position blocks the conduit, is of a flexible, elastic material, and is arranged with a tight fit in connection to the inner surface of the conduit and is partially fixed along the inner circumference of the conduit by means of one or more parts having a surface with longitudinal/circumferential extension in the conduit. In case of pressure of a medium in one direction of the conduit, any flow will be blocked due to the fact that the pressure of the medium will press the non fixed parts of the one way valve against the inner surface of the conduit, whereby a completely tight element is formed. In addition, the non fixed parts of the one way valve collapse in case of pressure of the medium directed in the opposite direction, whereby a flow will be let through without any substantial resistance depending on the magnitude of the pressure.

Abstract: A collapsible dispensing system for flowable materials is disclosed. A conical one-way valve assembly of coaxially conforming parts is attached to a collapsible container. An enclosing sleeve seals an elastomeric sheath to a valve body. Flowable materials are dispensed under positive pressure without back flow of external gases and contaminants, even after repeated dispensing of container contents. This enables flowable materials that are susceptible to oxidation and contamination to be reformulated without antioxidants and/or preservatives. The collapsible multiple dose dispensing system maintains the integrity and sterility of flowable materials, thereby prolonging product use life. The system takes advantage of a conical design, allowing for quicker, easier and cheaper manufacturing and assembly.

Abstract: A valve means for a flow pipe includes a cylindrical or sleeve like body part having a length which is longer than the extension of the flow opening in the flow pipe. The body part is fastenable to the flow pipe or to a branch part of the flow pipe by a connecting means, whereby the connecting means comprises a first flange extending in a first direction of the flow pipe and a second flange extending in a direction opposite to the first direction of the flow pipe, said first and second flanges being fastened to the body part. The body part is made of a flexible structure in order to provide for the valve function in a simple manner.

Abstract: A method and arrangement to accomplish a self-acting function of one way flow in a conduit with minimal flow resistance is disclosed. A one way valve, which in an unaffected position blocks the conduit, is of a flexible, elastic material, and is arranged with a tight fit in connection to the inner surface of the conduit and is partially fixed along the inner circumference of the conduit by means of one or more parts having a surface with longitudinal/circumferential extension in the conduit. In case of pressure of a medium in one direction of the conduit, any flow will be blocked due to the fact that the pressure of the medium will press the non fixed parts of the one way valve against the inner surface of the conduit, whereby a completely tight element is formed. In addition, the non fixed parts of the one way valve collapse in case of pressure of the medium directed in the opposite direction, whereby a flow will be let through without any substantial resistance depending on the magnitude of the pressure.

Abstract: An anti-backflow eductor has a resilient sealing sleeve disposed on a water port defining blind end tube. The sleeve has a thinner wall cross section at a discharge end to enhance sealing while facilitating increased water flow. The ports in the blind end tube extend into a radial tube flange at the tube's inlet end to facilitate water flow out of the ports between the sleeve and tube. A tapered seat in the housing, together with cross bars in the vents, reduces the air vent cross section and relative motion between sleeve and housing to reduce sleeve wear. The eductor comprises an anti-backflow housing and a venturi housing coupled together for relative rotation but being inseparable under normal conditions to inhibit venturi use without the anti-backflow function of the anti-backflow housing.

Abstract: A collapsible dispensing system for flowable materials is disclosed. A conical one-way valve assembly of coaxially conforming parts is attached to a collapsible container. An enclosing sleeve seals an elastomeric sheath to a valve body. Flowable materials are dispensed under positive pressure without back flow of external gases and contaminants, even after repeated dispensing of container contents. This enables flowable materials that are susceptible to oxidation and contamination to be reformulated without antioxidants and/or preservatives. The collapsible multiple dose dispensing system maintains the integrity and sterility of flowable materials, thereby prolonging product use life. The system takes advantage of a conical design, allowing for quicker, easier and cheaper manufacturing and assembly.

Abstract: A shower head comprising a hollow body connected at one end to a water source, and a face, plate connected at the other end of the hollow body. The face plate includes a plastic substrate having a plurality of circumferential openings and a central opening provided therein. The face plate further has a thermoplastic rubber layer formed on portions of the plastic substrate, including the walls of the plastic substrate circumferential openings. The thermoplastic rubber layer formed on the walls of the plastic substrate circumferential openings includes ridge portions extending away from and circumferentially around the plastic substrate circumferential openings. The shower head further comprises a plurality of plungers connected to a spider, wherein each plastic substrate circumferential opening receives a corresponding plunger and the ridge portions closely surround the plungers.

Abstract: A method for inducing a state of conciousness in a human being by bombarding the body with a fluid pulsating at a frequency corresponding with the frequency of brainwaves normal to the state being induced. A method is also disclosed for producing a concentrated fluid discharge by completely and rapidly blocking a flowing fluid stream under pressure, accumulating the resulting pressure rise and completely and rapidly releasing a concentrated fluid pulse. The invention includes apparatus for a producing a cyclic fluid discharge with a frequency from ½ to 120 pulses per second. Another method is disclosed for reducing fluid consumption without restricting fluid passageways by cyclically interrupting the flow of fluid and controlling the percentage of time during each cycle that fluid is allowed to flow.

Abstract: The check valve comprises an inlet duct (31) , an outlet duct (32) and a valve chamber (34) arranged between them. The valve chamber (34) is permanently connected with the inlet duct (31) via openings (35). On a blind duct (33) a valve member (36) is mounted which is made up of a flexible inherently stable hose. The valve member (36) extends into the outlet duct (32) and contacts the inner surface of the outlet duct. At a pressure exceeding the opening pressure of the valve the valve member (36) is lifted off the inner surface of the outlet duct (32).

Abstract: A connector assembly for a fluid connection, comprising a female part and a male part to be connected to this. The female part has an axial bore and there is a plug to close off the bore. The plug and the male part are provided with cooperating connection devices, which connect the plug with the male part when the male part is inserted into the bore and which maintain this connection when the male part is inserted further into the bore. The plug is provided with at least one hooking part which is elastically movable in a radial direction and has an accompanying hooking surface, which rests against a shoulder and keeps the plug in the bore until the plug and the male part are connected to each other while the male part is inserted into the bore.

Abstract: A lubricating oil filter cartridge is disclosed herein. The filter cartridge includes a bypass valve configured and arranged for opening at a selected oil pressure that is substantially higher at low oil temperatures than at the higher operating temperatures to reduce the amount of oil that bypasses the filter at low oil temperatures. The bypass valve is preferably formed of a temperature sensitive elastic material, for example, low swell, high modulus silicone, having an elastic modulus which is substantially higher at low oil temperatures than at higher oil temperatures.

Abstract: A a cartridge type delivery valve assembly in which a valve seat surface and a valve are integrated in order to assure good seating characteristics in the delivery valve. The delivery valve assembly is formed by fixing together a valve holder provided with delivery holes, a roll valve that is mounted along the internal surface of the valve holder to freely open and close the delivery holes and a valve stopper that fixes the roll valve onto the valve holder and regulates the lift quantity of the roll valve, in an integrated manner using coupling members and the delivery valve assembly thus achieved is mounted in a valve insertion space.

Abstract: An improved device for inflating and illuminating a balloon. The device includes a hollow tube having an air baffle structure integrally molded in its interior. The air baffle structure directs air flowing through the tube out through side openings and into a surrounding balloon. A small aperture also extends through the air baffle structure itself. The aperture is sized so that a double lead wire can pass though the aperture from one side of the air baffle structure to the other. The double lead wire extends past the air baffle structure and is directly coupled to an illumination source at the top end of the tube. A sealant is used to seal the aperture through which the double lead wire passes. As such, an air impervious air baffle structure is provided that allows for the direct electrical connection in between a light source on one side of the air baffle structure and a power supply on the opposite side of the air baffle structure.

Abstract: A valve apparatus employs a spherical sealing element disposed in resiliently deformable tubing. The dimensions of the sealing element are selected such that the valve opens when subjected to a cracking pressure that is greater than the head pressure developed in an IV set and less than the pressure generated by a peristaltic pump. The valve additionally has an actuator element associated therewith that may be applied to the tubing about the sealing element to cause free flow without the need for continuous manipulation.

Abstract: A vacuum sewer system comprises a normally closed sewer valve connected between the outlet opening of a waste receiving unit to be emptied and a sewer pipe, and an ejector. The ejector is an integrated part of the sewer pipe. The sewer pipe includes one portion forming a suction pipe of the ejector and another portion forming a discharge pipe of the ejector.

Abstract: The present invention relates to a nozzle assembly for dosing liquid while preventing spillage or dripping between the dosing. This nozzle assembly includes a dosing chamber (4) has an inlet (21), a piston housing wherein a piston plunger (5) is disposed, and an outlet (22) communicating with a distribution channel (10), a first one-way valve to open the inlet (21) when the dosing chamber (4) is being filled and to close the inlet (21) when a dose is being emptied out from the dosing chamber (4) into the distribution channel. The nozzle assembly furthermore comprises a second one-way valve (3) and a pressure release valve (23) to open a distribution channel outlet (27) when pressurized to a desired pressure. This pressure release valve (23) has an elastic cover (19) tightly fitted around the distribution channel outlet (27) and a distribution chamber having one or more needles (13) through which the liquid is dosed.

Abstract: A backward flow prevention device includes a body through which a fluid passage extends, the fluid passage intersecting an outer periphery of the body to form a fluid port. A flexible tube includes a first end mounted on the outer periphery of the body to extend across the fluid port, and a second, open end. The body is adapted to be mounted in a fluid conducting tube. When fluid flows through the fluid passage and exits the fluid port, it forces the tube away from the fluid port, whereby the fluid can flow through the tube and out the open end thereof. When the fluid flows backwards in the pipe, the fluid pressure causes the tube to be pressed against, and close, the fluid port.

Abstract: An improved, full-authority, digital-electronic-controlled cylinder fuel injection system for internal combustion engines is conceived that utilizes positive displacement metering and electrohydraulic actuation with pressure amplification, positive feedback control and self cooling. The injectors operate from a relatively low pressure common rail fuel supply that may be fed by either pumping or from a pressurized fuel tank. The injectors incorporate self cooling passages that enable continuous operation independent of engine cooling, if any. The injectors comprise a stepped piston freely oscillating in a cylindrical housing providing an actuation chamber at the large end and a metering cup and injection nozzles at the other. A third chamber is provided in between for handling a degree of piston leakage and ullage.

Abstract: A valve for venting a container has a valve housing with an annular chamber. A ring member with a first axial and a second axial end is arranged in the annular chamber. The ring member has a first sealing lip at the first axial end and a second sealing lip at the second axial end. A first channel and a second channel extend axially along the ring member for venting the container. The first channel vents in a first direction and the second channel vents in a second direction opposite the first direction. The first sealing lip closes off the first channel such that the first sealing lip and the first channel function as a relief valve. The second sealing lip closes off the second channel such that the second sealing lip and the second channel function as a relief valve.

Abstract: A method and apparatus is disclosed for supplying a fluid under pressure to a channel and for blocking a backflow of fluid from the channel to a catheter. The apparatus is a one-way valve assembly for use with a container supplying a fluid under pressure to a channel. The one-way valve assembly includes a first tube for communicating the fluid into a channel, a valve, and a second tube communicating with the container supplying the fluid and transmitting the fluid to the first tube via the valve. The valve comprises a base member with a hollow interior and a sealed distal end, which hollow interior is capable to communicate the fluid between the second tube and the first tube through at least one slit aperture which is positioned near the sealed distal end of the base member. The base member is engaged and covered by a flexible pressure-responsive surface which seals the slit aperture in order to prevent backflow of fluid from the first tube into the base.

Abstract: A dispenser having a manually-operated dispensing valve assembly has a container for accommodating a spray product. The bottom of the container has a recess adapted to cooperate with a tube used to deliver air under pressure from an air pump into the container. The container includes a check valve which allows air to flow into the chamber of the container and prevent the flow of air out of the chamber of the container. When the container is placed on the air pump, it actuates a switch which energizes an electric motor which drives a pump for supplying air under pressure which is directed to the tube and into the chamber of the container past the check valve.

Abstract: In air-spring legs with a pressure chamber in each case for motor vehicles, in which the respective pressure chamber can be subjected to different pressures via a connector leading to the outside, a minimum pressure is to be ensured in the respective pressure chamber irrespective of external influences. This minimum pressure is also to be present in the case of a demounted or not yet mounted spring leg in the pressure chamber thereof. For this purpose, the connector of the pressure chamber of the air-spring leg has in each case an automatically operating pressure relief valve which can be designed to maintain a minimum pressure which can be predetermined for the chamber, and by means of which pressure relief valve the connector is open at a pressure which is acting from the interior of the pressure chamber or from the outside and is above the minimum pressure and, at a pressure below it, is closed.

Abstract: A vacuum breaker assembly includes an outlet tube having circumferential air ports and a vacuum breaker sleeve formed of a flexible elastomeric material positioned within the outlet tube. Conventionally, a stiffening funnel will be positioned within the vacuum breaker sleeve. The elastomeric sleeve has an inlet end and an outlet end and is located within the outlet tube adjacent the spaced air ports. The vacuum breaker sleeve has lip seals in the interior intermediate the inlet and outlet ends, with the lip seals opening in response to water pressure at the inlet end to permit water to pass through the vacuum breaker assembly. There are peripherally spaced projections on the exterior of the vacuum breaker sleeve adjacent the outlet end to space the exterior of the sleeve from the outlet tube. There is a tapered lip seal extending axially from the outlet end of the vacuum breaker sleeve, with the lip seal being downstream of the spacing projections.

Abstract: To the housing part of a backflow-preventer for a sanitary device there is fastened an outer sleeve, made from elastomeric material, exhibiting a sleeve section which is distanced from the housing part. The outer sleeve embraces an inner sleeve which is fixedly supported to the housing and includes a supporting section, which is dimensioned such that the inner sleeve, when acted on by water flowing in the direction of flow, cannot fold inward. The sleeve section bears, under pretensioning, against the supporting section and is expanded by the pressure of the water so as to clear an opening between the sleeve section and the inner sleeve. If the water current is interrupted, the outer sleeve immediately bears again against the inner sleeve. The end sections of the inner and outer sleeves are configured like a sealing lip. The backflow-preventer prevents water from flowing back, even under the least underpressure on the feed side. Moreover, it is not sensitive to foreign bodies.

Abstract: This invention relates to pulsating drip laterals for use in irrigation and other applications. The combination of pulsators and drip laterals is used for decreasing the flow of the drippers and for decreasing their chance of getting plugged. More specifically, this invention relates to pulsating drip laterals in which the pulsators are made so that pressurized fluid can flow through them while, at the same time, a low continuous flow of some of the fluid flows out from each pulsator at high intermittent pulsating flow to a group of drippers. It farther relates to pulsators that are connected in line of different types of drip conduit and to drip laterals in which pulsators are inserted in the drip conduits during the extrusion process of the conduits.

Abstract: A spray element for use with a mold sprayer of the type used to spray a mold prior to or between cycles of a manufacturing operation such as die-casting, drop forging or other operations involving the working of metals. The spray element includes a valve body having an internal elastic pretension. The valve body may be positioned in either an open or closed position in relation to a valve seat. A control pressure is applied, through a separate feed line, to the valve body to open and close the valve by forcing the valve body against or away from the valve seat. The spray element also includes a feed line supplying working air which cooperates with an atomizer attached to a feed line supplying a working medium to the atomizer to atomize the working medium when the valve body is actuated.

Abstract: An injection site designed for use with a needleless syringe includes a housing placed in an infusion line and an inlet for engaging the syringe and conveying a fluid to be mixed with the infusate to the interior of the housing. A liner within the housing controls flow of fluid through the inlet by sealing the inlet when the pressure in the housing is equal to or exceeds the pressure in the syringe. The housing is made of two parts, each of which includes a flange. When assembled, the spaced flanges are on opposite ends of the liner, which is not directly attached to the housing, to limit movement of the liner to maintain its position in the housing.

Abstract: A device and method, especially adapted for operating sprinklers, shower heads etc. at low flow, converts low continuous liquid flow to a high intermittent and pulsating flow. The liquid is introduced at a controlled low rate of flow, such as by the use of a pressure-compensated dripper in a liquid supply line. The liquid then flows into a chamber which is somewhat expandable in volume. The pressure increases in the chamber while outflow of the liquid is restricted until pressure created by introduction of the liquid is sufficient to eject the fluid intermittently at a higher flow. This is achieved by utilizing a pressure-responsive valve in the liquid exit of the container. The valve has a preset pressure response designed for quick response to create a water hammer effect. The valve has openings which create a pumping effect to admix air or another liquid with the effluent stream.

Abstract: A balloon inflation device with a light source involving a tube with internal electrical conducting wire such that a power source can be attached to one end of the tube, a light bulb can be attached to the other end of the tube and the power source will illuminate the light bulb. The tube also has a radially projecting flange with a chamfered edge on its outer surface such that the tube can be inserted into a balloon, light first, and the stem of the balloon can be stretched over the flange, holding the tube in place and creating a mechanical seal that prevents gas from passing between the flange and the balloon stem. The power source of the light bulb can be removed from the tube and a gas stream can be projected into the balloon, inflating it, but the tube is arranged and configured such that the gas in the balloon cannot flow out of the balloon through the tube.

Abstract: An air pressure adjusting module having variable blade device of independent structure is disclosed. The device being connected to an oil supplying device mounted with a nozzle having an external throttle and an internal throttle provides a finer and homogeneous atomized air-oil mixture which enhance the lubricating effect.

Abstract: A booster valve for a pneumatic conveying system is made with an annular seal made out of relatively thin rubber having a low tensile strength to thereby reduce the resistance or opposition to the flow of the booster air into the conveying line and the seal retainer is provided with supporting ribs for restraining movement of the seal to prevent the seal from exceeding its elastic limit which otherwise could occur due to a whipping action which occurs during high volumes of air flow through the booster valve. In addition, the booster valve has a large air-receiving chamber so that the input pressurized air is allowed to expand to thereby reduce the velocity of the air as it passes through the valve.

Abstract: A discharge valve is incorporated into a scroll compressor for use in a refrigerator or an air conditioner. A valve element seating surface having a concave cylindrical shape is formed in the upper surface of the stationary disk of the stationary scroll plate of the scroll compressor, a discharge port is formed through the stationary disk of the stationary scroll plate so as to open in the valve element seating surface, and a discharge valve element having a cylindrical shape conforming to the concave cylindrical shape of the valve element seating surface is seated on the valve element seating surface so as to open or close the discharge port. The valve element seating surface having a concave cylindrical shape facilitates machining the stationary scroll plate, reduces the top clearance of the scroll compressor without reducing the rigidity of the stationary disk, prevents the concentration of stress on the delivery valve, and improves the reliability of the delivery valve.

Abstract: A safety sub is disclosed for retaining drilling fluid in the kelly or equivalent and other components of the mud system located above the drill string when pressure drops in the drill string, such as when the circulation pump is turned off in adding a new joint to the drill string. The safety sub includes a pressurized elastomeric cartridge having three or more depressions surrounding a central bore. When internal drilling pressure drops, the external pre-charge pressure closes the elastomeric material by creating a cusp opposite each depression, the cusps closing together. The metallic end pieces of the cartridge and parallel round connecting rods between these inserts are bonded to the elastomeric material during the molding process.

Abstract: A one-way valve assembly including an axially extending valve body having an inlet end and an outlet end and with an expandable elastomeric sleeve tightly fitted about the valve body. A cover member encloses the elastomeric sleeve and valve body and presses the sleeve into fluid-tight contact with the valve body at two axially spaced locations. Further, the cover member is fitted tightly onto the valve body adjacent its inlet end. A flowable substance flows from a source through the valve body passing to the outlet and cannot flow back to the source.

Abstract: A one-way valve for dispensing a fluid material from a container includes an axially extending valve body and an elastomeric sleeve stretched over the valve body in tightly fitting contact with it. A ring shaped enlargement is formed monolithically on each end of the sleeve and fits in sealed contact with reduced diameter portions at the opposite ends of the valve body. The sleeve can be assembled on the valve body in a variety of ways including mechanically expanding the sleeve and placing it on the valve body. The enlargements at the ends of the valve body have a thickness dimension in the radial direction in the range of 2 to 4 times the thickness of the sleeve between the enlargements.

Abstract: An inflator manifold made of plastic materials that is as strong as metallic inflator manifolds and that has the same external dimensions of metallic inflator manifolds so that it meets industry strength and size standards. The outermost end of the inflator manifold is capped by an end cap having external and internal threads so that a double screw threaded engagement is achieved that matches the strength of metallic threads. The side walls of the inflator manifold are thickened in an internal direction so that the bore for gaseous fluids under pressure entering the article to be inflated has a diameter less than the diameter of a bore of a metallic inflator manifold.

Abstract: A one-way valve for dispensing fluid assures, after the fluid has been dispensed, that any flow of contaminants into the source of the fluid is prevented. The one-way valve has a disc shaped valve body enclosed about the circumferential edge by an elastomeric membrane. Separate passageways conduct the fluid through the valve body with the fluid flowing from one passageway to the other between the circumferential edge and the elastomeric membrane. The valve body has a greater diameter than axial length.

Abstract: A pressure responsive spring valve which is able to function at high pressures and temperatures, and can attain a high degree of precision control in a minimum of space, as well as an improved high pressure fuel injector for internal combustion engines which uses such a spring valve to achieve the demanding performance characteristics of the more complex new injector designs within limited space requirements. In all cases, a band-like spring valve member is used to reduce the number of parts and the space requirements therefor relative to that required for a coil spring type pressure control valve.

Abstract: Thrust chambers for liquid propellant rocket engines include three principal components. One of these components is an injector which contains a plurality of injection elements to meter the flow of propellants at a predetermined rate, and fuel to oxidizer mixture ratio, to introduce the mixture into the combustion chamber, and to cause them to be atomized within the combustion chamber so that even combustion takes place. Evolving from these injectors are tube injectors. These tube injectors have injection elements for injecting the oxidizer into the combustion chamber. The oxidizer and fuel must be metered at predetermined rates and mixture ratios in order to mix them within the combustion chamber so that combustion takes place smoothly and completely. Hence tube injectors are subject to improvement.

Abstract: A flow control valve assembly is provided which, when connected to a rotatable drill string, prevents drainage of fluid from a standpipe and rotary hose of a drilling rig when fluid flow through the drill string is interrupted. The flow control valve assembly comprises a tubular body member or housing having a fluid flow passage extensive therethrough and a flow control valve supported within the fluid flow passage of the tubular body member. The flow control valve, which is a self-contained pressurized unit, is provided with an annular pressure cavity so that the flow control valve can be selectively opened and closed in response to pressure differential between the annular pressure cavity and the pressure of fluid in the fluid flow passage of the tubular body member.

Abstract: A mud saver valve in which a cylindrical resilient sleeve is pressed against an inner tubular member by a pressurized gas to prevent flow from above the valve to below the valve at low pressures, and which is fully opened for free flow at higher pressures.

Abstract: An enclosing sleeve for a one-way valve presses an elastomeric sheath against the valve body to provide a seal between the sheath and the valve body. In addition, the sleeve can form a closure over the outlet end of the valve body protecting it from contamination or contact with contaminating surfaces.

Abstract: A fluid dispensing valve is made up of a plural part valve body enclosed by an elastomeric sheath sealed at spaced locations to the outside surface of the valve body. Fluid is dispensed out of a container through the dispensing valve. The arrangement of the valve body parts and the sheath permit flow out of the valve but prevent any flow back into the container. As a result contamination can not flow back through the valve into the container.

Abstract: A valve structured for attachment in-line with a conduit containing a fluid under pressure. The valve provides a flow path for the fluid, with the flow path including an area whereat all of the fluid passing through the valve must pass between a stationary surface and an interior surface of an elastic tubular member. A liquid filled chamber of the valve is isolated from the flow path, and in communication with an exterior surface of the elastic tubular member. A first pipe is attached to the valve in open communication with the liquid filled chamber. The other end of the first pipe is connected to a pressure vessel. A flexible diaphragm is affixed within the pressure vessel to divide the interior cavity thereof into a first and a second chamber. Both the first chamber and first pipe are completely filled with liquid and in communication with each other.

Abstract: A valve assembly includes an elongated valve body, an elastomeric sheath laterally enclosing the outside surface of the valve body with the sheath being sealed to the valve body at its ends spaced apart in the elongated direction. An inlet channel extends in the elongated direction from one end of the valve body for receiving a fluid from a container, such as a flexible container. An outlet channel is located at the opposite end of the valve body extending in the elongated direction for discharging the fluid received in the inlet channel. At least one port extends outwardly from the inlet channel to the outside surface of the valve body so that the fluid can flow between the outside surface and the elastomeric sheath causing the sheath to expand. The fluid between the outside surface of the valve body and the sheath flows to at least one other port in the valve body directed inwardly to the outlet channel so that the fluid can be discharged.