Abstract: An air extraction valve and grill assembly for mounting in an opening in the bodywork of the passenger compartment of a vehicle body, and for enabling the extraction of stale air from the passenger compartment, is molded from the rigid thermoplastic material and defines two air extraction apertures. Each aperture is controllably closed off by a valve flap. Each valve flap is molded from rigid thermoplastics material, or produced from other similar rigid material. Onto each valve flap are over-molded two strips of thermoplastic material. One of these strips forms a hinge for supporting the valve flap in the aperture and biassing it into a position where the other over-molded strip acts as a seal with the rigid body of the assembly.

Abstract: A cylinder assembly of a reciprocating compressor has exhaust valve elements including an exhaust valve reed, a stopper and a keeper. The keeper has two opposite fixed ends pressed against a valve seat by the cylinder head. Each of the fixed ends of the keeper includes an elastically deformable portion arranged to be elastically deformed by a pressing force of the cylinder head. This ensures accurate positioning of the keeper, regardless of the magnitude of the pressing force from the cylinder head.

Abstract: A one-way flap-type vehicle ventilation valve comprises a generally planar molded plastic sealing flap for overlying a flow opening formed through a vehicle body panel. The flap is formed in a two shot molding process to have a rigid plastic main body with a resilient plastic seal lip about its periphery. A plastic support shaft is molded integrally with the main body and is spaced therefrom by integral support webs. A plastic support is pivotally joined to the support shaft by connecting portions of the bracket that are molded about the ends of the support shaft. Fasteners extend from the bracket for joining the valve to the vehicle body panel. The fasteners include end portions for passing through holes formed through the vehicle body panel adjacent the flow opening.

Abstract: A uni-directional fluid valve particularly for use as an exhalation valve for a filter mask comprises a flexible flap attached at one end to a concave portion of a seat. The mounting of the flap imparts to it a transverse curvature, stiffening the flap sufficiently for it to remain seated in the absence of a pressure differential across it even when orientated with the seat above the flap.

Abstract: Discharge valve actuating system for hermetic compressors of the type having a piston (3) reciprocating inside a cylinder (2) which pumps gas to a discharge chamber (22) maintained in selective fluid communication with the cylinder (2) through a discharge orifice (12) provided on a valve plate (10) and closed by a respective reed discharge valve (40). There is at least one subchamber (70) which maintains with the discharge chamber (22) a fluid communication that is constantly blocked by a movable blocking element (60) which moves between an operative position of contact with the discharge valve (40) when at a closed position and an inoperative position of spacing from said discharge valve (40). The inoperative and operative positions are defined as a function of the pressure inside the discharge chamber (2) in relation to the pressure existing in the subchamber (70) during each pumping cycle of the piston (3).

Abstract: An improved reed type compressor discharge valve assembly uses a conventional reed and reed stop, but increases flow efficiency past the reed with a uniquely configured valve plate. The valve plate has a round discharge port of conventional size and diameter, but the surface of the valve plate beneath the reed is formed with a recessed channel that opens into the near edge of the port. This provides a more open and less restricted flow path out of the port, and creates an effectively greater opening height for the reed.

Abstract: A fluid displacement apparatus comprises a valve plate member dividing a compressor housing into a first chamber and a discharge chamber. A passage is formed in the valve plate member to allow communication between the first chamber and the discharge chamber. An elastic valve member disposed on the valve plate bends to open and close the end of the passage. The valve retainer member is secured to the valve plate together with the elastic valve member and has a curved end portion. A valve seat includes a recessed portion offset from an end surface of the valve plate. The recessed portion includes an inclined portion and a wall portion extending therefrom. The distance between the beginning of the curved portion of the valve retainer member and the securing means is greater than the distance between an edge of the recessed portion of the valve seat and the securing means.

Abstract: The inventive device produces compressed gas. It is provided with a compressor, wherein the compressor has a compression chamber (25), a suction chamber (10) and a pressure chamber (6). The compression chamber (25) can be connected to the suction chamber (10) via a suction valve (12, 21, 54) and to the pressure chamber (6) via a pressure valve (3). When the receiving-end pressure reaches a predetermined level, the pressure chamber (6) is connected to a compressed-air supply container (44). This connection is via a device for the discontinuation of compressing action (23, 51). In addition, the pressure in the pressure chamber (6) is monitored by a control valve (26), which is a sensing device with a control output (38). The sensing device (26) is designed to produce a control signal at the control output (38), when the pressure in the pressure chamber (6) or compression chamber (25) of the compressor reaches or exceeds a predetermined value.

Abstract: A high flow one-way or reed valve mechanism for use in the air/fuel supply system of an internal combustion engine. The reed valve comprising of a reed cage, reed cage ports, and reeds. The reed cage containing two converging main walls and two end walls. Each main wall is afforded multiple width wise reed cage ports. Each reed cage port is covered with a flexible reed. The high flow reed valve is designed to deliver large air/fuel flows into the cylinder of an engine while eliminating detrimental back flow and pressure fluctuations into the air/fuel supply source.

Abstract: New valves to allow or prevent material flow through a conduit are disclosed. Such valves comprise a valve seat having a longitudinal axis, defining a through opening and including a seating surface which defines a portion of the through opening. A valve body, operatively coupled to the valve seat, is located at least partially in the through opening. A valve element is secured to and movable relative to the valve body. The valve element includes a sealing surface which is curved in at least one plane parallel to and including the longitudinal axis of the valve seat and is adapted to contact the seating surface to prevent material flow through the through opening. Pump assemblies and condiment dispensing systems employing such valves are also disclosed.

Abstract: An improved non-drip nozzle valve which can be retro-fitted onto existing fuel dispensing nozzles comprises an expanding integral wire frame made from two spaced, interconnected C-shaped springs. Once inserted into the throat of the fuel dispensing nozzle, the C-shaped springs expand the frame to engage the inner wall of the nozzle. Each C-shaped portion of the frame is provided with a rubber flap valve half. The two halves of the flap valve overlap each other when the fuel flow is discontinued to prevent any remaining fuel from dripping or spilling out of the end of the nozzle. When the fuel is being pumped, the flow pressure is great enough to unseat the flap valve halves allowing fuel to freely flow past the valve.

Abstract: A reciprocating compressor includes a piston reciprocating in a chamber. A valve plate disposed at one end of the chamber includes a fluid inlet orifice and a fluid discharge orifice. Each orifice is covered by a valve in the form of a resilient material check valve arranged so that a free end thereof covers the respective orifice. Each valve comprises a resilient material check valve anchored at an end opposite its free end. Each valve includes a cut-out forming a resilient portion pressed against the valve plate for pre-biasing the valve to an open position.

Abstract: A flap-type pressure relief valve includes a frame defining a flow opening therethrough with a flexible flap valve element positioned adjacent the frame to overlie the opening and allow fluid flow in a first direction through the opening while preventing flow in the opposite direction. A retainer assembly for joining a peripheral edge portion of the flap valve element to the frame comprises an elongated retainer bar integrally joined to the frame at one edge and connected to the frame at the other edge along a side of the flow opening in overlying relationship to a peripheral edge of the flap valve element. The retainer bar has a retainer surface spaced from the frame a distance slightly greater than the thickness of the flap valve element. Retainer pins extend from the frame through openings in the flap valve element. The assembly thus supports the flap valve element in a freely floating manner without forming air leakage openings.

Abstract: A control valve (80) of a hydraulic coupling (32) controls pumping from a casing inlet port (58) by a hydraulic pump (48) through a casing outlet port (78) to control coupling between two rotary members such as by operation of a clutch (68). The casing (34) is connected to one of the rotary members while a pumping component embodied by an impeller (50) is connected to the other rotary member and meshed with an internal ring gear (54) having one more tooth than the number of impeller teeth to provide sufficient pumping capacity so that the pump can act as a brake while still having relatively constant pumping pressure. The control valve (80) includes an elongated valve element (82) mounted within a recess (98) to provide accurate control of its closure when the pumped hydraulic fluid reaches a predetermined pressure corresponding to a predetermined extent of relative rotation between the two drivetrain members.

Abstract: A fluid displacement apparatus comprises a valve plate member dividing a compressor housing into a first chamber and a discharge chamber. A passage is formed in the valve plate member to allow communication between the first chamber and the discharge chamber. An elastic valve member disposed on the valve plate bends to open and close the end of the passage. The valve retainer member is secured to the valve plate together with the elastic valve member and has a curved end portion. A valve seat includes a recessed portion offset from an end surface of the valve plate. The recessed portion includes an inclined portion and a wall portion extending therefrom. The distance between the beginning of the curved portion of the valve retainer member and the securing means is greater than the distance between an edge of the recessed portion of the valve seat and the securing means.

Abstract: The length of dwelling of a voice prosthesis in the fistula of a patient is extended by supporting the soft hollow body of the prosthesis with an elongated, rigid cartridge and mounting the flapper valve by means of a tab which extends through a slot in the flange of the cartridge. An enlarged cavity in the flange or the body communicates with the slot and receives the leading portion of the tab. The cavity is filled with adhesive to secure the valve to the cartridge.

Abstract: A resuscitator apparatus including a resilient, self-inflating squeeze bag having a single combined inlet/outlet which is preferably removably connected to a first manifold in operative communication with a substantially unbiased valve device. The first manifold includes an inlet coupling adapted for connection to a source of pressurized respiratory gas such as oxygen and an outlet coupling adapted for connection to a first end of a tubular connector. The tubular connector is desirably formed as a short, kink-resistant, flexible hinge member. The second end of the tubular connector is adapted for swiveled connection to an inlet coupling of a second manifold in operative communication with a non-rebreathing valve contained within a tubular, preferably L-shaped housing.

Abstract: A housing has a refrigerant gas suction chamber at its center portion and a refrigerant gas discharge chamber at its peripheral portion. A valve plate between a cylinder block and a housing has a plurality of suction holes for connecting a plurality of cylinder bores in the cylinder block to the suction chamber and suction valves capable of opening the suction holes. The valve plate has a plurality of discharge holes for connecting the cylinder bores to the discharge chamber and discharge valves capable of opening the discharge holes. Pistons are reciprocatably accommodated in the cylinder bores. In accordance with reciprocation of the pistons, refrigerant gas is led into the cylinder bores from the suction chamber via the suction valves and suction holes. This refrigerant gas is compressed in the cylinder bores and is discharged to the discharge chamber via the discharge valves and discharge holes.

Abstract: A polymer composite reed for a reed valve is provided, wherein the reed has improved mechanical properties as a result of its construction and is highly resistant to chemical and thermal attack. The improved mechanical properties of the reed are primarily due to the reed being reinforced with two plies of fabric having a harness satin weave, which provides the reed with a flexural modulus that is substantially greater in one direction of the reed. The chemical and thermal properties are primarily due to the semicrystalline thermoplastic material from which the reed is formed. In addition, the thermoplastic material enhances the fracture toughness of the reed to improve the durability of the reed. As a result, the reed is highly suitable for applications requiring long life under high speed, cyclic loading, such as that found in two-stroke and four-stroke internal combustion engines for the automobile industry.

Abstract: An apparatus for relieving overpressure conditions in the passenger compartment of a motor vehicle comprises a valve assembly that is mounted in an opening formed in an exterior wall of the compartment, the assembly includes a frame panel sized to fill the opening and having a passage formed therethrough to define an exhaust from the interior of the compartment to the exterior ambient space. Flap valve elements overlying the exhaust for allowing free flow of air in a direction from the interior of the compartment to the exterior while preventing air flow in the opposite direction. Overpressure relief support connectors mount the frame panel in the opening in the wall and are adapted to release the frame panel from its mounted position whenever the air pressure within the compartment exceeds a predetermined minimum level about atmospheric pressure.

Abstract: A flap type vehicle ventilation valve improves sealing, while still preventing flap blowthrough, by insetting the surface of the blowthrough prevention valves from the plane of the vent opening. Therefore, under normal negative pressure, the flap can bulge inwardly from the plane of the vent opening, but not hit the webs, so that puckering of the flap and the consequent backflow leakage is prevented. The webs still hit the flap in response to high negative pressures, to avoid flap blowthrough.

Abstract: Intake or exhaust reed valves of a compressor or vacuum pump have T-shaped flappers which are received in similarly T-shaped pockets so as to be substantially flush with the valve plate. A dirt trap groove is formed in each pocket adjacent to the hinge line of the flapper, a corner relief groove surrounds lands which support the flappers in their associated pockets above the groove, and the extending-part of each pocket widens in the direction away from the cross-part of the pocket. The mating T-shapes of a flapper in a pocket restrain the flapper in the pocket without interfering with the opening and closing motion of the flapper.

Abstract: A valve assembly for a compressor or the like having improved sealing and noise reduction characteristics. A reed valve is provided with a gasketing layer, such as expanded graphite, which confronts the orifice plate. One reed valve plate also incorporates an integral, formed limiter portion to reduce the number of parts requiring assembly.

Abstract: A flap type pressure relief valve comprises a frame having an opening therethrough controlled by a valve flap in the form of a flexible sheet of material mounted to the frame along a first side of the opening to overlie the opening. The flexible sheet is joined to the frame by a connection comprising slots through the frame adapted to receive and retain tabs on the valve flap that extend through the apertures. The tabs are formed of resilient and compressible elastomeric material and have enlarged first and second retaining ribs extending closely adjacent the respective slot on both side faces of the frame with a necked connecting portion disposed between the first and second ribs. The connecting portion of each tab is seated within the respective aperture and is under compression and completely fills the aperture and compressively engages the frame. The retaining ribs hold the valve flap in its assembled location.

Abstract: A check value for controlling fluid flow comprises two sleeves connected to one another in fluid-tight engagement and a flexible membrane disposed across an interior cross-section of the engaged sleeves. The flexible membrane is secured to the sleeves along less than the membrane's full circumference, so that the unsecured portion of the membrane can flex to allow fluid to flow through the sleeves in one direction. The membrane resists fluid flow in the opposite direction.

Abstract: A gasket which is interposed between a pair of valve bodies of an automatic transmission each of which is provided with a hydraulic circuit for feeding operating fluid to frictional engaging elements of the automatic transmission. The gasket which is interposed between the pair of valve bodies is formed with a slit which in turn communicates with a fluid passage which in turn intercommunicate the hydraulic circuits of the pair of valve bodies, and has a valving element defined in the gasket by the slit. A portion on the side of the hydraulic circuit of one valve body is provided with a valve seat over which overlies and closes the slit. Depending upon the difference in pressure between the hydraulic circuits of the pair of valve bodies, the valving element elastically deforms itself so as to permit the flow of the operating fluid from one hydraulic circuit into the other hydraulic circuit.

Abstract: An improved reed valve mechanism having a cushioned reed valve seat is disclosed. The present invention provides a smooth resilient insert which is attached around ports in a reed cage and projects beyond the reed cage surface on which the reed valve members seat. The benefits of conventional rubber coated reed cages are supplied without the expenses inherent in previous construction methods. Various mechanical mounting means are disclosed for ease in construction and improved reed valve performance.

Abstract: The profile of the valve stop of a discharge valve is configured such that the portion facing the free length of the valve member has an increasing radius portion and a decreasing radius portion.

Abstract: New valves to allow or prevent material flow through a conduit are disclosed. Such valves comprise a valve seat having a longitudinal axis, defining a through opening and including a seating surface which defines a portion of the through opening. A valve body, operatively coupled to the valve seat, is located at least partially in the through opening. A valve element is secured to and movable relative to the valve body. The valve element includes a sealing surface which is curved in at least one plane parallel to and including the longitudinal axis of the valve seat and is adapted to contact the seating surface to prevent material flow through the through opening. Pump assemblies and condiment dispensing systems employing such valves are also disclosed.

Abstract: A flap valve apparatus and an improved flap valve element which uses integrally bonded layers comprising a first soft flexible layer of an elastomer and a second layer of a rigid plastics material. The method of forming the flap valve element by a two component extrusion process is also disclosed.

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 nozzle for inflatable objects being made of a plastic material, including a nozzle body and a sealing element composed of a vertical sleeve body and an one-way membrane, in which the nozzle body is incorporated with an annular nozzle seat, a conical wall is extended upward from the annular nozzle seat, an annular horizontal wall is extended from the top of the conical wall, a vertical cylindrical body is extended from the annular horizontal wall, an air passage is formed in the vertical cylindrical body, a plug which can be inserted to the air passage to seal the air passage, the sealing element is tightly fitted to the lower cylindrical body, and an one-way membrane is secured to the inner wall of the sealing element to swing freely therein and to close the air passage tightly.

Abstract: An exhalation valve 14 for a filtering face mask 10 has a flexible flap 24 that makes contact with a curved seal ridge 30 of a valve seat 26 when the valve 14 is in the closed position. The curvature of the seal ridge 30 corresponds to a deformation curve exhibited by the flexible flap 24 when secured as a cantilever at one end and exposed at its free portion to a uniform force and/or a force of at least the weight of the free portion of the flexible flap. A seal ridge curvature corresponding to a flexible flap exposed to uniform force allows the flexible flap 24 to exert a generally uniform pressure on the seal ridge to provide a good seal. A seal ridge curvature corresponding to a flexible flap exposed to a force of at least the weight of the flap's free portion allows the flexible flap 24 to be held in an abutting relationship to the seal ridge 30 under any static orientation by a minimum amount of force, thereby providing a face mask 10 with an extraordinary low pressure drop during an exhalation.

Abstract: A flap valve arrangement for one-way control of the flow of fluid in between an upstream chamber and a downstream chamber, and particularly an inlet valve in a piston-type positive-displacement pump, having wall parts which define between them a fluid-flow passage which connects both of the chambers, and a valve flap which is mounted on a first wall part and which is movable across the passage under the influence of fluid forces acting on the flap, into and out of engagement with the second wall part to close and open the passage respectively. The second wall part is provided with openings which form part of the fluid passage and which are open on one side of the wall part directed towards the upstream chamber and on a side of the wall part directed towards the downstream chamber. A plurality of valve flaps supporting elements are disposed between the openings on the side of the second wall part which is directed toward the downstream chamber.

Abstract: A mouth-to-mask resuscitator which can be carried in a person's pocket consisting of an oronasal mask and a check valve which is inserted into the mask and allows a person to administer artificial ventilation to fill the victim's lung with air and to allow the victim to exhale air through an exit in the valve assembly away from the person administering the resuscitation. The mask is foldable into itself to form a cavity for storing the check valve which has inspiratory and exhalation air flow back pressures meeting ISO standards.

Abstract: A valve is formed by machining a silicon wafer 18 bonded to a glass wafer 2. This machining forms a membrane 44 and a sealing ring. Part of the surface of the membrane 44 and optionally the sealing ring are oxidized in order to impart a mechanical pre-tension to the membrane holding the valve in a closed position. Further etching 52 may be carried out in a manner such that in the absence of the aforesaid pre-tension the valve is in the open position at rest.

Abstract: One-way valve having a flap (4) formed by a partially elastic element comprising, on the one hand, a rigid part (5) fixed by a hooking means (6) to a container (1) containing a viscous product (2) and, on the other hand, an elastic part (8) bearing elastically against a sealing zone (9) integral with the container, the said valve having adjusting means (11, 12) for adjusting the bearing force of the said elastic part on the said sealing zone, the said adjusting means also forming the said hooking means.

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 return air blocking device (1) in the nature of a check valve for use in the ventilation system for the interior of a motor vehicle. The device comprises a housing or main frame (2) attachable in a vehicle support panel by insertion into a panel aperture. A flap-type valve element is directly connected with housing (2). Preferably, housing (2) includes a grating structure against which the flap-type valve element rests while in the closed position.

Abstract: A check valve assembly has a seat plate formed with a first opening, a check plate with a valve section defining a second opening, and an orifice plate between the seat plate and the check plate. The orifice plate has a third opening covered by the valve section of the check plate and a fourth opening communicating the second opening in the check plate and with a cutout section connecting the third and fourth openings. The seat plate covers the fourth opening and the cutout section in the orifice plate.

Abstract: A pulmonary valve for use with fitness level respiratory testing equipment, having a tubular silicone rubber body member. Formed at one end of this member is a mouth seal which is subsequently inserted into a subjects mouth. In the superior surface of the tubular body member is found the inhalation ports, these ports allow for air passage during inhalation. Within the tubular body member is housed two valve membranes, one for inhalation and one for exhalation. During inhalation, the inhalation membrane opens, creating an airflow passage-way directly to a subjects's mouth cavity. During exhalation the inhalation membrane closes shut and the exhalation membrane opens thus creating a second and separate airflow passage-way, at the end of exhalation the exhalation membrane closes shut, thus completing one respiration cycle. Because of the unique membrane design there is found no equipment dead space.

Abstract: An improved apparatus and method of construction of a reed valve mechanism having a cushioned reed valve seat is disclosed. The present invention provides a smooth resilient overlay plate which is attached around ports in a reed cage. The benefits of conventional rubber coated reed cages is supplied without the expenses inherent in previous construction methods. Various mechanical mounting means are disclosed for ease in construction and improved reed valve performance.

Abstract: The present invention provides improved multiple stage reed valve construction for internal combustion engines. The reed valves comprise first stage reed valves with multiple ports in the first stage reed valve. Beams having a smoothly shaped curve from the base of the first stage reed valve to the apex thereof and narrowing toward the apex separate adjacent ports. The reed valves of the present invention provide significant improvements in engine operation.

Abstract: Known disk oil coolers, when they are to be used without an oil filter, are provided with a separate housing cover which, by means of a sealing device, is disposed on a ring surface of the housing and is held on the housing by way of a hollow screw. These constructions require a large amount of space. It is disclosed to provide the hollow screw, on the side of the driving surfaces for a screwing tool directed toward the housing, with an end disk which is provided with a sealing surface resting against an annular wall of the housing. On the side of the end disk facing the housing, an opening is provided which leads into the interior of the hollow screw. This hollow screw may be used instead of the hollow screw to be provided for the use with the filter. Elaborate modifications or other housings are not required.

Abstract: Flat valves, such as reed or disc face valves, have their seating motion damped by a plurality of discrete depressions formed either in the valve, in the valve seat surrounding a port, or both. The depressions may be formed by any number of inexpensive machining operations including drilling, pulse-laser machining or the like.

Abstract: An improved injection port (1) for a single-use syringe is described. One embodiment of the injection port has a one-way valve system for making it more difficult to reuse the syringe (2). The one-way valve system has a flap or diaphragm valve (6) housed in a valve chamber (11) at the proximal end of port cylinder (45). When the valve (6) is seated against valve seat (51) on valve cap (5), refilling of the syringe is blocked. During injection, the valve (6) unseats and moves toward radial ribs (7), allowing flow of medicament into the proximal end of a needle (2). Another embodiment of the injection port (1) includes longitudinal grooves (8) on the interior surface of the chamber (12) at the distal end of cylinder (45). The grooves (8) vent pressure from a Luer syringe inserted in the distal end of the cylinder (45).

Abstract: An anti-siphon drain conduit. First and second cylindrical tubular portions with a U-shaped tubular portion interposed therebetween, and communicating with, the first and second cylindrical tubular portions. A drain passage extends through the conjoined tubular portions. A siphon break passage communicates with the drain passage at approximately the intersection of one of the cylindrical tubular portion and the U-shaped portion. A flap valve is formed integrally with at least one of the tubular portions for closing the siphon break passage upon the presence of liquid flowing through the drain passage. A bleeder cap is fitted to the siphon break passage. The bleeder cap has a dome portion penetrated by an aperture and an accordion portion. The bleeder cap serves freely to admit atmospheric pressure therethrough while tending to restrict any liquid that inadvertently enters the siphon break from exiting the siphon passage into atmosphere.

Abstract: A reciprocating piston hermetic compressor including a two piece suction valve used for fluid control. The reexpansion volume between the valve leaf and valve spacer is reduced to a minimum. The valve leaf is located within the compressor and valve spacer by an attachment means such as locating pins.

Abstract: The gas turbine combustor air swirler includes a spring temper swirler member having a plurality of air control doors or vanes so cut therein about the longitudinal axis of the combustor inlet as to be integrally and resiliently pivotally connected to the swirler member. The air control doors are progressively canted open to provide predetermined air flow rate and air swirl angle to the combustor inlet in response to increases in air pressure differential thereacross resulting from progressive increases in fuel flow through the nozzle during various regimes of engine operation. The swirler is free of linkages and sliding or other contacting components that are susceptible to binding and other malfunctions in service in the engine.

Abstract: A one-way air valve for relieving pressure within the passenger compartment of an automobile includes a plastic frame having an air passage therethrough with a flap integrally molded with the frame but of more elastic material and connected to the frame by a living hinge. The flap is molded in a position extending through the passageway and the living hinge is spring loaded by swinging the flap back through the passageway to overlie the outside of the frame over the passageway, thereby biasing the flap against the frame.