Abstract: A discharge valve assembly for use in a fluid displacement apparatus having a suction chamber and a compression chamber on one side of a valve plate, a discharge chamber on the other side of said valve plate, and a passage which is formed in the valve plate extending between said compression chamber and the discharge chamber and has an open end through which discharge fluid flows. The discharge valve assembly comprises an elastic valve member disposed on the valve plate. One end of the valve member is secured to the valve plate. The elastic valve member is capable of bending to open and close the passage. A stabilizing device is disposed on the elastic valve member for stabilizing movement of the elastic valve member.

Abstract: A diaphragm dosing pump (1) has a rotary driving motor (3) electrically connected to control electronics (4). The motor is controlled in such a way that at the beginning and end of each dosing operation the driven diaphragm preferably always takes the same starting position, in particular a bottom dead center position. In order to achieve a reliable sealing behavior of the inlet and outlet valves even during slow working strokes and when the pressure difference between suction and compression sides is small, the valves are designed with elastic valve disks mounted without stress between their valve seat and an opposite rib-like stop.

Abstract: A valve assembly has a discharge valve member and a suction valve member. One of these valve members includes a reed valve. The reed valve has a tab which includes a localized through hardened area which provides a wear surface. The remainder to the reed valve has a lower hardness to provide fatigue strength to the reed valve.

Abstract: An axial flow valve system for a linear compressor which is capable of enhancing the operation of the compressor by securely fixing an intake valve comprising an axial flow valve system to prevent an undesired axial movement of the intake valve, promptly carrying out an opening-closing operation and improving the reliability of the valve opening-closing operation.

Abstract: A reciprocating compressor includes a compression chamber in which a piston compresses gas, the gas being discharged through a discharge hole that is normally closed by a valve assembly. The valve assembly includes a valve plate on which one end of a discharge valve is anchored. The discharge valve includes an elastically flexible portion for covering the discharge hole. A stopper valve is positioned behind the discharge valve for limiting the extent of movement of the discharge valve. A keeper member is disposed behind the stopper valve to retain the stopper valve and discharge valve in place. One end of the keeper member is fixed to the valve plate by a pin, and the other end of the keeper member is fixed to the valve plate solely by a pressing force of a cylinder head.

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: A valve apparatus of a hermetic type compressor enables an easy mounting of an exhaust valve and a valve spring to an accurate position within a reentrant groove formed in a cylinder head, decreases the number of elements of the valve apparatus to facilitate the assembly and reduces a dead volume to enhance efficiency of the compressor. The valve apparatus includes a cylinder head having a reentrant groove with an exhaust hole, the exhaust valve installed to be opened/closed on the upper surface of the exhaust hole, the valve spring in contact with an upper surface of the exhaust valve, a head cover and a packing interposing between the cylinder head and head cover for preventing a leakage of the refrigerant gas.

Abstract: A valve assembly is comprised of a valve plate 35, a discharge valve 34, a backing valve 33, and a stopper 31. A first fixed member 34H of the discharge valve 34 and second fixed member 33H of the backing spring 33 have a first slot 43 and a second slot 42 for receiving a projection 44 formed on the supporting surface 37S, respectively. The stopper 31 comprises a first pressing member 31H which enables the first fixed member 34H of the discharge valve 34 and second fixed member 33H of the backing spring 33 to be pressed in a supporting surface 37S of the accommodating space 37. The embossing portion 36 is pressed by the lower surface of the valve plate 101.

Abstract: An improved reed valve assembly for a compressor (10) includes a substantially annular reed tip support seat (36) which nonconcentrically surrounds a round discharge port (32). The radial width of the support seat (36) varies continually from a greatest width nearest the distal edge of the reed tip (24') to a least width diametrically opposed thereto. The greatest width is sufficient to support the reed tip (24') in the area where it needs the greatest support, but is narrower everywhere else, so as to reduce contact area, noise and opening resistance.

Abstract: An improved discharge valve apparatus for a hermetic compressor which is capable of fixing the retainer based on the elastic force of the elastic protrusions formed in the retainer itself and the shape of the head cover engaged with the retainer, for thus reducing the number of parts and the number of processes. The apparatus includes a head cover, a head engaged with the head cover and having a groove formed in an upper surface of the head, a discharge valve inserted into the groove of the head, a valve spring inserted into the groove of the head for limiting a movement of the discharge valve, and placed on an upper surface of the discharge valve, and a retainer inserted into the groove, and positioned on an upper portion of the valve spring, and having elastic protrusions formed at both sides thereof.

Abstract: A compressor comprising a compressor housing including a cylinder block forming seven cylinders equiangularly spaced apart and extending axially therein. Each of the cylinders is slidably fitted with a piston, and a drive mechanism is coupled to the pistons to reciprocate them within the cylinders to create fluid suction and discharge. The drive mechanism includes a drive shaft rotatably supported in the housing and coupling means for converting the rotary motion of the drive shaft to reciprocating motion of the pistons. The coupling means may also include a rotor coupled to the drive shaft and a slant plate having a surface disposed at an inclined angle relative to the drive shaft. A valve plate fabricated from steel having a hardness in a range of about 120 to 450 Hv seals the cylinders, such that fluid is compressed between each of the pistons and the valve plate.

Abstract: A discharge valve assembly for use in a fluid displacement apparatus has a suction chamber and a discharge chamber on one side of a valve plate, a compression chamber on the other side of the valve plate and a passage formed in the valve plate extending between the compression chamber and the discharge chamber. The discharge valve assembly comprises a valve limiting device secured to the valve plate for limiting the bending movement of a valve member. The valve member is bent away from the valve plate when all external pressure influences are removed. Noise and vibration caused by the striking of the valve member against the valve seat and the retainer member are thereby decreased.

Abstract: A check valve cartridge for a fluid pump, the check valve cartridge including: a valve seat; a flap valve member seated on the valve seat, the flap member having a first portion movable toward and away from the valve seat; a bumper seated on the flap member, said bumper member for biasing the first portion of the flap valve member toward the valve seat. The check valve cartridge also including a stop member located on the bumper, between the stop member and the flap member; and fastening means for joining the base, flap member, bumper, and stop member to form the integral valve cartridge. The check valve cartridge is seated in a recess formed in the pump housing and is located between the pump housing and a flow manifold.

Abstract: A valve mechanism of a refrigerant compressor is disclosed. The compressor invention includes a valve plate which is disposed between a compression chamber and a suction chamber of the and has an inlet port formed there-through for fluid communication between the suction and compression chambers, and a flap type suction valve which is located on the side of the valve plate adjacent the compression chamber and has a proximal portion secured to the valve plate and a flexible distal portion movable between closed position thereof where the fluid communication is shut off and open position where the fluid communication is established. The valve plate is provided with a rib-formed support for supporting the suction valve when it is closed against the inlet port opening. The supporting rib extends approximately to the center of the inlet opening on the side of the inlet port adjacent the suction valve to provide a point of support at the center of the inlet opening.

Abstract: An improved medical pumping apparatus for increasing or stimulating blood flow in a patient's limb extremity. The medical apparatus includes a fluid supply mechanism for applying pressurized fluid to an inflatable bag, according to the principles of the present invention, where the bag is adapted to be fitted upon the limb extremity of a patient. The bag has at least one fluid bladder, and preferably separate first and second fluid bladders. Each fluid bladder is adapted to engage a different portion of the limb extremity. The fluid supply mechanism applies pressurized fluid to each bladder such that a compressive pressure is applied upon each portion of the limb extremity engaged by a fluid bladder. The fluid supply mechanism includes a compressor for providing the pressurized fluid, and a reservoir for storing pressurized fluid from the compressor.

Abstract: In a refrigerant compressor, a discharge valve assembly which reduces reexpansion volume. The present invention provides a discharge valve assembly for reciprocating, rotary, and scroll types of compressors, and includes a spherical valve member that engages and penetrates a discharge port provided on a compressor cylinder head, valve plate or scroll plate. The discharge port is formed in the cylinder head or scroll plate and is dimensioned such that the spherical member penetrates and substantially fills the discharge port. The reexpansion volume within the discharge port is thereby reduced. To maintain engagement of the spherical member with the discharge port, an elastically deformable arm having an aperture is positioned to hold the spherical member in the discharge port. The arm is elastically deformable to allow the spherical valve member to move out of engagement with the discharge port during the compression phase of the compressor.

Abstract: A hermetic type compressor which makes opening and closing of a exhaust valve installed inside a reentrant groove formed in a cylinder head smooth, and prevents leakage of refrigerant from the exhaust valve by fabricating a valve seat surface to be in the same height as that of a valve fixing surface.

Abstract: A reciprocating compressor includes a compression chamber in which a piston compresses gas, the gas being discharged through a discharge hole that is normally closed by a valve assembly. The valve assembly includes a valve plate on which one end of a discharge valve is anchored. The discharge valve includes an elastically flexible portion for covering the discharge hole. A stopper valve is positioned behind the discharge valve for limiting the extent of movement of the discharge valve. A keeper member is disposed behind the stopper valve to retain the stopper valve and discharge valve in place. One end of the keeper member is fixed to the valve plate by a pin, and the other end of the keeper member is fixed to the valve plate solely by a pressing force of a cylinder head.

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 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: A discharge valve assembly for use in a fluid displacement apparatus has a suction chamber and a discharge chamber on one side of a valve plate, a compression chamber on the other side of the valve plate and a passage formed in the valve plate extending between the compression chamber and the discharge chamber. The discharge valve assembly comprises a valve limiting device secured to the valve plate for limiting the bending movement of a valve member. The valve member is bent away from the valve plate when all external pressure influences are removed. Noise and vibration caused by the striking of the valve member against the valve seat and the retainer member are thereby decreased.

Abstract: A refrigerant compressor comprises a compressor housing divided at least partially by a valve plate into a first chamber and a second chamber, the second chamber comprises a discharge chamber. An elastic valve member is capable of bending to open and close an end opening of the conduit. The valve member has a predetermined elastic modulus and is arranged such that the end opening of the conduit remains blocked until a pressure in the first chamber reaches a predetermined value. The valve plate includes a valve seat surrounding the end opening of the conduit and a recessed portion offset from the end surface of the valve plate. The recessed portion includes an inclined surface portion and a wall portion extending therefrom so that the elastic valve member closes the end opening of the conduit without striking the end surface of the valve plate due to an elastic restoring force of the elastic valve member.

Abstract: A piston type compressor provided with a suction valve mechanism which includes a suction valve element having suction reed valves openably closing suction ports for providing a fluid communication between a suction chamber for refrigerant gas before compression and cylinder bores in which pistons reciprocate to compress the refrigerant gas. The cylinder bores are provided with a first axially recessed engaging face engaging with frontmost end portions of the suction reed valves to provide the suction reed valve with a preliminary step of stopping condition, and a second axially recessed engaging face portions engaged with an inner portion of the suction reed valves to provide the suction reed valve with a final step of stopping condition.

Abstract: A compressor for compressing a refrigerant includes a discharge outlet, and a valve mechanism for controlling the opening and closing of the outlet. The valve mechanism comprises a reed normally biased to an outlet-closing position by a leaf spring which is yieldable under the pressure of compressed refrigerant applied to the reed to enable the reed to flex and open the outlet. A fixed valve stopper overlies the leaf spring for limiting the extent of travel of the leaf spring and reed when opening the outlet. The valve stopper includes a flat inner section spaced above the outlet by a uniform distance, and a convexly curved outer section extending from the flat section to a free end of the stopper. During a valve opening operation, an inner portion of the leaf spring collides with the flat section, but an outer free end of the leaf spring does not collide with the stopper, because of the curvature of the outer section of the stopper. Thus, potential damage to the outer end of the leaf spring is avoided.

Abstract: A scroll compressor includes stationary and orbiting scroll members in engagement with each other. The stationary scroll member includes a stationary end plate having first and second end surfaces opposite to each other, a stationary scroll wrap protruding axially from the first end surface of the stationary end plate, a discharge port defined in the stationary end plate in the proximity of a center thereof, and a recess defined in the stationary end plate on the second surface thereof. A check valve is received in the recess so as to open or close the discharge port. The recess has a shape substantially identical to the shape of the check valve and also has a depth greater than a maximum lift of the check valve.

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: A compressor whose structure is simple, assembling is easy and refrigeration efficiency is improved.A valve unit of the compressor includes a valve plate 230 in which a suction hole 231 and a discharge hole 234 are formed, a suction valve plate 220 disposed between valve plate 230 and a cylinder block 17, formed with a first opening and closing piece 221 for opening and closing the suction hole, and a discharge plate 240 disposed between valve plate 230 and cylinder head 25, formed with a second opening and closing piece for opening and closing the discharge hole.

Abstract: A compressor including an isolated backstop which reduces the amount of undesirable noise emitted from a compressor during operation. The backstop includes two or more isolating members which isolate the backstop and prevent direct contact between the backstop and the walls of compressor. The isolating members may be elastomeric members or springs.

Abstract: An elongated recess is provided on one side of a valve plate, and a piston is provided on the other side of the valve plate. Discharge holes are provided through the valve plate at the recess, and a pair of discharge reeds are disposed within the recess to close/open the discharge holes. A spring reed presses against the discharge reeds on sides thereof opposite to the discharge holes to close the discharge holes. A stopper is secured to the valve plate and fixes the spring reed into position. The operation of the discharge reed can be tested by the operation of the discharge reed alone, and refrigerant gas remaining in the discharge holes can be reduced, thereby improving compression efficiency. The two discharge holes are each associated with one of the pair of discharge reeds, thereby preventing over-compression loss.

Abstract: A refrigerant compressor includes a compressor housing divided at least partially by a valve plate into a first chamber comprising a compression chamber, and a second chamber comprising a discharge chamber. A fluid conduit links the compression chamber with the discharge chamber. An elastic valve member opens and closes the end of the conduit. The valve member has a predetermined spring constant such that the end opening of the conduit remains blocked until the pressure in the compression chamber reaches a predetermined value. An integral gasket is positioned between the valve plate and the front and rear housings and comprises an outermost, an intermediate and an innermost annular portion chamber. Outer ribs are connected between the outermost and the intermediate annular portion, and inner ribs are connected between the intermediate and the innermost annular portions.

Abstract: The invention concerns a suction-controlled vane-cell pump whose pumped flow does not increase further above a determined speed but remains practically constant. Radially movable vanes (4), arranged in a rotor (2), form working chambers (12). Between the vanes (4) the rotor (2) has control slots (21) which cooperate with several outlets (22 or 22A) of a front plate (5) located in a pressure zone. The control slots (21) and the outlets (22 or 22A) are dimensioned so that a reflux of oil under pressure can be avoided from a higher-pressure working chamber (12) into a lower-pressure working chamber. The outlets (22 and 22A) are closed by a valve (24) with movable tongues (25, 25A). During the opening stroke, the tongues (25, 25A) rest on a supporting body (26). Suction openings (13 and 13A) communicate with a suction chamber (14) through throttle bores (31, 31A) in order to limit the suction current. Wear due to cavitation can be avoided by the invention.

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 valve for a hydraulic damper comprising a flat circular disc(s) with a central axial opening wherein the disc(s) has a spring characteristic tending to maintain the disc in a flat shape and tending to return the disc(s) to the flat shape when forces deflect the disc(s) from the flat shape, and a disc retainer having a predetermined axial length, a circular cylindrical shape, a central axial opening, axially coextensive with said axial length, a perimeter wall around an outer perimeter of the retainer, an axial wall around a perimeter of the axial opening wherein the perimeter wall has a first diameter, an annular portion inside of the perimeter wall characterized by a shape having a continuously varying curvature arcuately rotated completely around the retainer axis, wherein during a high velocity event, the disc(s) deflects against the retainer and a load between the disc(s) and the disc retainer is spread along the disc(s) surface wherein excessive localized straining of the disc(s) is prevented and where

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 a first fixed radius portion and a second, larger fixed radius portion. The valve has a leg portion and a valve head with said leg portion tapering and widening in the direction of the valve head so as to have an increasing spring rate.

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: 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 a first fixed radius portion and a second, larger fixed radius portion. The first and second fixed radius portions are tangent at their transition.

Abstract: A reed valve assembly is mounted in a valve chamber formed in an intake passage of a crankcase of a two-stroke cycle engine and the reed valve assembly comprises a box-shaped valve body having a base end opened and secured to an intake pipe and a front end converging towards the crankcase, the valve body being provided with valve openings formed to side surfaces of the valve body, and reed valves resiliently provided for the valve openings. The valve chamber has opposing inner wall surfaces gently curved outwardly for forming expanded portions between the side surfaces of the valve body and the expanded surfaces of the valve chamber. The curved surfaces of the inner wall surfaces of the valve body converge towards an interior of the crankcase with an inclination of about 10 to 20 degrees and a maximum lateral width of each of the expanded portions is defined to about 5 to 10 mm.

Abstract: A number of embodiments of improved reed valve mechanisms for reciprocating machines wherein an arrangement is provided by employing a magnet releasably restraining the valve element in one of its positions so as to permit a stiffer valve to be employed while, at the same time, insuring against loss of volumetric efficiency and control. An adjustable stopper plate is also described.

Abstract: A discharge valve apparatus for a compressor includes a valve plate with a port opened, a lead valve fixed on the valve plate, adapted for swingably opening and closing the port elastically, and including a substantially disk-shaped head portion and a neck portion constricted continuously from the head portion, and a retainer fixed on the valve plate, and including an inclining surface adapted for regulating the opening degree of the lead valve, the inclining surface having an inclination varying around an area where the retainer is brought into contact with the head portion of the lead valve when the lead valve fully opens the port. With the discharge valve apparatus, the lead valve can be inhibited from adhering on the retainer through the lubricant contained in the refrigerant, and accordingly the volumetric efficiency deterioration, resulting from the retardation of the lead valve in the returning, can be inhibited.

Abstract: A refrigerant compressor includes a compressor housing defining a chamber in which successive strokes of intake, compression, and discharge of a refrigerant gas are repeatedly performed. The chamber is divided into a compression chamber and a discharge chamber by a valve plate. A discharge hole links the compression chamber to the discharge chamber. The valve plate includes an end surface which faces the discharge chamber. A discharge valve regulates a flow of the refrigerant gas from the compression chamber to the discharge chamber. A valve retainer limits the bending movement of the discharge valve in the direction in which the refrigerant gas exits the discharge hole. The valve retainer is secured to an axial end surface of the valve plate together with the discharge valve by a fixing bolt. The discharge valve bends as it opens and closes the discharge hole. The valve plate includes an annular groove formed at the end surface thereof.

Abstract: An improved reed valve arrangement for a two cycle engine wherein in addition to the normal reed valve elements and stopper plates, there are provided rectifier plates that define a flow passage so as to direct the charge away from the walls of the engine that define the associated intake passage.

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: The profile of the valve stop of a discharge valve conforms to the maximum bending stress or the maximum allowable fatigue stress whereby impact of the valve element with the valve stop occurs when the valve element has the least kinetic energy and highest potential energy such that the least possible kinetic energy is transferred to the valve stop.

Abstract: A valve plate assembly is provided with a valve restraint for maintaining a valve within a recessed portion of the valve plate. The valve restraint further includes an irregular surface which contacts the surface of the valve when the assembly is in use, for example, in a compressor. The irregular surface may include through-holes at least partially through the surface which contacts the valve or may be a textured surface which contacts the valve during use. The valve plate includes a recessed portion having guides for receiving notched sections in the sidewalls of the valve and valve restraint.

Abstract: A non return valve (10) adapted to be supported between two pipe end flanges (20) has a tubular body (11) with an internal flow passage (12) and a valve seat (15) around the inner end of the inlet opening (13), which is a major segment of a circle, and a flat circular elastomeric valve member (30) having a flexible segment (32) fixed to the seat and an internally reinforced rigid segment (31) located over the seat and normally covering the inlet opening. The rigid part hinges inwardly under upstream fluid pressure to uncover the inner end of the inlet opening but reseats itself when fluid pressure is reversed.

Abstract: A valve spacer plate assembly includes a rigid plate member having first and second outer surfaces and at least one opening extending therethrough. The assembly also includes at least one gasket member disposed on one of the outer surfaces of the rigid plate member. The gasket member circumscribes at least one of the openings. A spaced portion circumscribes the edge of the openings, and forms a seating ledge against which the free end of a blade valve may rest.

Abstract: A valve assembly is provided for location in a fluid flow path between an intake manifold and a cylinder for preventing blow back from the cylinder into the manifold and for reducing back pressure in said manifold on an internal combustion engine. The assembly comprises a plurality of valved units each having an inlet and an outlet. The inlet is operatively connected to the intake manifold, and the outlet is operatively connected to the cylinder. A valve member is disposed on each of the units and is flexible between a valve open position where the member is offset from the outlet, and a valve closed position where the member operatively closes the outlet, thereby preventing reversed fluid flow from the cylinder into the intake manifold. A novel method of assembling the reed valve assembly of the present invention is also provided.

Abstract: Disclosed is a multicylinder compressor including a cylinder block having a plurality of cylinders, a valve plate provided on an end of the cylinder block and having a plurality of inlet ports and outlet ports, a cylinder head provided on the valve plate and having a partition wall defining a discharge chamber, a discharge valve member provided on the valve plate, and a valve guard member provided in the discharge chamber and restricting the separation distance of each of the plurality of discharge valves of the discharge valve member from the valve plate. The outline of the fringe of the valve guard member is formed along the inner side surface of the partition wall. The valve guard member, particularly the valve guard portions of the valve guard member, can have a high rigidity, even if the thickness of the member is small. Therefore, the compressor according to the present invention can be made to be light-weight and can be produced inexpensively.

Abstract: A valve assembly in a piston type refrigerant compressor is disclosed. The valve assembly includes a retainer formed integrally with a gasket plate for restricting the opening of a discharge reed valve of the compressor, and having on opposite sides at the distal portion thereof stay portions integral with the gasket plate for rigidly holding the retainer. According to the present invention, provision is made to guide some part of the refrigerant gas compressed in a cylinder bore to be discharged into a discharge chamber in such a way that the influence of the discharge gas pressure on the retainer at its distal end is reduced. In some embodiments of the invention, this is accomplished by guiding and allowing part of the gas to flow toward the proximal portion of the retainer to discharge the gas.

Abstract: A valve plate assembly includes a flapper valve and restraint in recessed intake and outlet ports of a valve plate. The recessed ports have guides located therein corresponding to notched sections of the flapper valve and the restraint such that a foolproof method of assembly can be achieved. In addition, a screw clearance in the top of the piston is not required since the recessed portion allows for the screw to be at or below the surface of the valve plate.