Abstract: A pump apparatus includes a pump chamber having a fluid inlet and a fluid outlet and a flexible impeller mounted for rotation within the pump chamber. The flexible impeller includes a plurality of radially extending vanes to contact a curved wall of the pump chamber, such that separate pump cavities are defined between adjacent vanes and the pump chamber wall. The fluid inlet and the fluid outlet are defined in the second end wall so that the curved pump chamber wall is uninterrupted.

Abstract: A rotary compressor may include a rotational shaft, a first bearing and a second bearing each supporting the rotational shaft in a radial direction, a cylinder disposed between the first bearing and the second bearing and forming a compression space, a roller disposed in the compression space to form a contact point spaced at a predetermined interval from the cylinder and coupled to the rotational shaft to compress a refrigerant in response to rotation of the roller, and at least one vane slidably inserted into the roller and in contact with an inner circumferential surface of the cylinder and dividing the compression space into a plurality of compression chambers.

Abstract: A valve for regulating the fluid pressure and/or the fluid flow in a fluid distribution network. The valve comprises a stator (10, 110) defining an interior space (14, 114); at least one inlet port (15, 131a, 132a) and at least one outlet port (15, 133a, 134a). The inlet port and outlet port are arranged for being connected to a fluid duct. A rotor (20, 120) is arranged rotatable about a rotational axis in the interior space and is provided with a rotor core (21, 121) and a number of vanes (23, 123), which are movable in relation to the core. The rotor continuously divides, in sealing relation with the stator, upon rotation of the rotor the interior space into at least two mutually separated chambers (14a, 14b, 114a-d). Each chamber comprises an inlet opening (17a, 17b, 112a) and an outlet opening (18a, 18b, 112b).

Abstract: A sliding vane rotary expander is used in a waste heat recovery system for a power plant. One example rotary expander has multiple stages with the vane assemblies disposed in bearing supported rings. Another example rotary expander has multiple stages with the vane assemblies disposed in an elliptical cavity. A balance valve equalizes the flow within the stages. Single stage rotary expanders may also be used.

Abstract: A vane pump for an automatic transmission includes a housing which may be spaced from the axis of the transmission input shaft axis and driven by a chain or gear train driven by the torque converter hub or disposed on and about the axis of the transmission input shaft and driven at engine speed. The vane pump includes a pair of port plates which reside on the end faces of a pump body having a cylindrical chamber which receives an eccentrically disposed rotor that is coupled to a stub shaft. The rotor includes two halves that define a central chamber. The rotor also includes a plurality of radial slots which receive a like plurality of vanes. The outer ends of the vanes are in contact with the wall of the cylindrical chamber and the inner ends are in contact with a single vane ring received within the central chamber.

Abstract: The housing of a vane-type machine has a largely cylindrical space for accommodating the vane cells. A shaft is eccentrically arranged in the housing. First and second guide plates are provided on the shaft. Slides displaceable largely radially to the shaft in the direction of the inner housing wall are guided by the guide plates. A vane cell is formed with the participation of two adjacent slides of the adjacent region of the inner housing wall and the volume of the vane cells in the region of an inlet opening differs from the volume of the vane cells in the region of an outlet opening. To increase the speed of the shaft and the temperature of the medium, the slides are lubricated by pressure oil and radially and axially guided by a guideway, which is fixed with respect to the housing.

Abstract: A rotary expansible chamber device includes intersecting, two-piece vanes that provide expansion/compression chambers as the vanes rotate about a central axis of a rotor housing. The rotor housing has an inner contour defined by a conchoid of rhodonea having a shape coefficient of at least 3. The vanes are captured by a primary and secondary output shaft, with engagement arms of the primary output shaft being juxtaposed between the intersecting vanes. A vane spring helps maintain each vane at a constant length and in sealing engagement with the inner contour of the rotor housing.

Abstract: A positive displacement pump having a centrally disposed rotor within a housing, the rotor having inwardly and outwardly moving vanes for movement of fluid through the pump. Races in end walls of the housing partly or entirely control movement of the vanes. A dam is movably positioned at the housing's fluid discharge port, the dam having upper and lower ends, the lower end of the dam extending into the housing and being positioned so as to be close to or in sliding contact with the surface of the rotor. This pump construction is extremely versatile in its construction and applications.

Abstract: A sanitary pump with gear shaft bearing blocks in opposed cylindrical portions of a pump body bore, blocks constituting hand removable structural pump ends. Gear shaft bearings extending completely through blocks for easy cleaning, sealed by O-rings and clamp plates. Oval gear cavity bore between cylindrical portions of body bore extends only length of largest of interchangeable gears. Seals at end of gear cavity eliminate entrapment zones. Minimal intrusion of bearing blocks into gear cavity allows large operating temperature range. Shaft seals are contained in a hand removable cartridge. Complete pump disassembly by one manually operated clamp. Gear shaft diameters differ assuring correct assembly. Mount receives pump, tie rods sealing pump and securing to mount. Mount allows pump removal without changing pump-drive alignment. Pin and groove engagement of pump to mount allows 90° interval pump ports orientation. Pump displacement is altered with interchangeable gears and drive end bearing blocks.

Abstract: A forced compression type pump including a cylindrically shaped pump case, an eccentric rotating body shaft-supported on said pump case at an eccentric position relative to said pump case and a compressing and forcibly sending member movable in a radial direction or said eccentric rotating body and adapted to be brought into press contact with the interior wall of said pump case, characterized in that the interior space is formed at the central part of said eccentric rotating body, a plurality of guide grooves are formed in a radial direction from said interior space to the circumferential surface of said eccentric rotating body, a plurality of circumferentially contacting cylindrical body inserted in said guide grooves and movable freely in a radial direction are formed, said plurality of circumferential contacting cylindrical body are in a planetary relationship relative to said central cylindrical body and the outer circumferential surfaces of said circumferentially contacting bodies are brought into press

Abstract: An improved vane-type rotary compressor includes a rotor which is constructed by four similar plates having evenly spaced slots and containing three sets of links with hooks and pistons in their central sleeves, and four vanes which are engaged with the hooks of the links and slidably mounted in the slots of the rotor while the edges of every vanes are lightly contacting with the inner surface of the cylinder having a gas inlet and a gas outlet of the compressor. The slidable vanes accompanying with the pistons in the sleeves of the links can reduce the contacting force of the vanes against the cylinder during the rotation to prolong the life of the vanes and to prevent the vanes from wear.

Abstract: A novel centrifugal device that attaches to multiple rotating cross-vanes in a rotary engine so as to offset the effects of centrifugal forces on the cross-vanes and thereby reduce seal element wear on the cross-vanes. The device consists of two clevis arms and a weight arm pivotally pinned to each end of the rotating cross-vanes.

Abstract: A rotary pump-motor-meter comprises a rotor assembly including a shaft (38) and one or more hub members (37) coaxially affixed to the shaft, that supports a plurality of flaps (40) disposed about the shaft (38), each of which flaps has a round first edge and a crescent trailing edge and is supported by the hub member (37) pivotably about a pivot axis coinciding with the center of the round first edge disposed adjacent to the shaft (38), which rotor assembly is rotatably disposed within a cylindrical cavity with two port openings in a parallel and eccentric relationship, wherein one or more circular cam guides disposed adjacent to the rotor assembly in a rotable arrangement about a cam axis guides a plurality of cam rollers (41), each of which cam rollers is anchored to one end face of the flaps (40).

Abstract: The present invention relates to an internally constrained vane rotary compressor employing a floating carrier ring, containing a plurality of non-continuous cam surfaces to guide a corresponding plurality of vanes about the interior of a stator, resulting in improved compressor performance. The invention features a triple roller assembly operating in conjunction with the carrier ring to both guide and constrain each vane. In addition, the invention describes a method for increasing the operating efficiency in rotary vane compressors.

Abstract: A rotary internal combustion engine including a housing dividing a substantially circular rotor chamber and a drive shaft extending through this chamber. A circular rotor is mounted in the chamber on the drive shaft and has a diameter less than the diameter of the chamber. The rotor and drive shaft are offset from the center axis of the chamber. Two pairs of vanes are slidingly mounted in the rotor with one vane of each pair being located diametrically opposite to the other vane of the pair. Rods fixedly connect the vanes of each pair together so that the predetermined distance between outer ends of the vanes of each pair remains constant and is the same for each pair. This predetermined distance is substantially equal to the distance from a point on the circumferential wall of the chamber which is closest to the circumference of the rotor and a second point on the wall diametrically opposite the first point.

Abstract: In a rotary vane hermetic compressor an improved loading structure is provided for the vanes. A pressure reducing means incorporated into the compressor rotor reduces the frictional loading of the vane tips against the compressor walls. A passageway vents fluid at suction pressure into a cavity in the rotor containing the inner tips of the sliding vanes.

Abstract: A vane control unit for a vane pump having reversible control, the pump having a rotor, a rotor shaft and a vane control unit including vane thrusters inserted into housings arranged in the rotor shaft and designed to control the movement of the vanes outside of their respective housings in the rotor. The vane control unit has thrusters, each of the thrusters is adapted to be connected to two diametrically opposed vanes. The thrusters are semi-cylindrical in shape, have a planar surface and are arranged in groups of two so that their axes, each in their planar surface, are concurrent and coplanar. The thrusters are mounted in sliding engagement in respective cylindrical channels perpendicular to the rotational axis of the rotor shaft and form an angular space between them which depends on the number of vanes in the pump.

Abstract: A rotary machine includes a stationary housing having a rotor chamber and a rotor rotatably mounted in the rotor chamber, the inner peripheral surface of the rotor chamber having a central axis which is eccentrically disposed relative to the axis of rotation of the rotor. The housing has generally planar inner end walls having a cylindrical opening through which the rotor shaft extends. A plurality of vanes are slidably mounted in vane slots in the rotor and operable to define variable volume chambers as the rotor rotates and the vanes move generally radially in and out of the vane slots. Back pressure regulating grooves are disposed in the end walls of the housing, the grooves having a central axis coincident with the axis of rotation of the rotor, the grooves being juxtaposed to the vane slots and communicating with the vane slots for regulating the internal back pressure on the vanes in the vane slots.

Abstract: A rotary machine includes a housing having a rotor chamber and a rotor rotatably mounted in the rotor chamber. The rotor has longitudinal ends and a plurality of generally radially disposed vane slots extending between the longitudinal ends. A plurality of vanes are slidably mounted in the vane slots and operable to define variable volume chambers as the rotor rotates and the vanes move generally radially in and out of the vane slots. Rings are rotatably mounted on the housing and limiting devices are provided between the rings and the vanes and are operable to limit the extent of outward radial movement of the vanes from their respective vane slots during rotation of the rotor to preclude sliding contact between the vanes and the inner peripheral surface of the housing. Biasing springs on the housing are engageable with the rings and bias the rings in an axial direction toward the longitudinal ends of the rotor to thereby suppress axial oscillation of the rings and stabilize the rotation of the rings.

Abstract: A vane pump in which a projection is provided on the end of a vane which radially slides as a rotor rotates, and an annular race concentric with an inner peripheral surface of a housing is provided in the inner surface of the end wall of the housing, the projection being brought into engagement with the annular race to control the slide of the vane.

Abstract: A vane pump in which a projection is provided on the end of a vane which radially slides as a rotor rotates, and an annular race concentric with an inner peripheral surface of a housing is provided in the inner surface of the end wall of the housing, the projection being brought into engagement with the annular race to control the slide of the vane.

Abstract: A vane pump in which a projection is provided on the end of a vane which radially slides as a rotor rotates, and an annular race concentric with an inner peripheral surface of a housing is provided in the inner surface of the end wall of the housing, the projection being brought into engagement with the annular race to control the slide of the vane.

Abstract: A vane pump in which a projection is provided on the end of a vane which radially slides as a rotor rotates, and an annular race concentric with an inner peripheral surface of a housing is provided in the inner surface of the end wall of the housing, the projection being brought into engagement with the annular race to control the slide of the vane.

Abstract: A vane pump in which a projection is provided on the end of a vane which radially slides as a rotor rotates, and an annular race concentric with an inner peripheral surface of a housing is provided in the inner surface of the end wall of the housing, the projection being brought into engagement with the annular race to control the slide of the vane.

Abstract: A vane pump in which a projection is provided on the end of a vane which radially slides as a rotor rotates, and an annular race concentric with an inner peripheral surface of a housing is provided in the inner surface of the end wall of the housing, the projection being brought into engagement with the annular race to control the slide of the vane.

Abstract: A rotary pump having an eccentric rotor disposed in a cylindrical housing is provided with a pair of cylindrical roller pistons disposed in opposed recesses in the rotor for rolling engagement with the internal surface of the housing. A pair of bearing rings having radially inwardly projecting ribs are located at opposite ends of the housing with the ribs disposed in engagement with complimentary grooves formed in the external surface of the rotor and in the external surfaces of each roller to positively locate the rollers within the recesses. A plurality of bearing support members are provided having semi-circular cradle portions engaging the grooves in the rollers and parallel leg portions extending through parallel bores in the housing. Interconnecting rods are provided between the legs of opposed bearing support members to maintain the rollers in positive engagement with the internal surface of the housing at all times.

Abstract: A vane pump comprising an intake port for sucking air into the pump, the intake port being extended axially with respect to a housing having an approximately cylindrical shape, and an outlet port for discharging air, the outlet port being extended from the peripheral wall of the housing toward the outer periphery, so as to make a flow of air smooth.

Abstract: A sliding vane positive displacement pump with a spring biased mechanical vane acutating system. The pump includes a case having an inlet and an outlet with a liner having a cam-shaped inner surface eccentrically disposed therein. A rotor having radially oriented slots is rotatably positioned within the case, and radial holes interconnect opposite pairs of slots. A vane is slidingly positioned in each slot. A vane actuator assembly, including a hollow sleeve with a plinger reciprocably disposed therein, is installed in each slot. A spring is positioned in the sleeve and bears against one end of the plunger and a closed end of the sleeve. The spring biases the sleeve and plunger so that each is in contact with the inwardmost edge of a vane. Each plunger defines a slot therein, and each sleeve defines a transverse hole therethrough corresponding to the slot. A pin, pressed into the transverse hole, extends through the slot for preventing the plunger and sleeve from becoming separated.

Abstract: A vane pump in which an engaging portion in engagement with vanes to restrain the protrusion of the vanes to a given amount is provided on the inner surface of an end wall of a housing, the vanes being made of a material having a relatively high brittleness, the housing having an inner peripheral surface finished into a rough surface so as to restrain the sliding resistance of the vanes resulting from rotation thereof.

Abstract: A sliding vane positive displacement pump with a spring biased mechanical vane actuating system. The pump includes a case having an inlet and an outlet with a liner having a cam-shaped inner surface eccentrically disposed therein. A rotor having radially oriented slots is rotatably positioned within the case, and radial holes interconnect opposite pairs of slots. A vane is slidingly positioned in each slot. A vane actuator assembly, including a hollow sleeve with a plunger reciprocably disposed therein, is installed in each slot. A spring is positioned in the sleeve and bears against one end of the plunger and a closed end of the sleeve. The spring biases the sleeve and plunger so that each is in contact with the inwardmost edge of a vane. Each plunger defines a slot therein, and each sleeve defines a transverse hole therethrough corresponding to the slot. A pin, pressed into the transverse hole, extends through the slot for preventing the plunger and sleeve from becoming separated.

Abstract: In a vane pump having a casing, an annular rotor rotatably disposed in the casing, a plurality of vanes longitudinally movably carried by the rotor, and a cam ring eccentrically disposed about the rotor with its cylindrical inner surface slidably contacting with the leading ends of the vanes, the cam ring having at the diametrically opposed portions thereof inlet and outlet ports which face in the same direction, there is proposed a measure in which a groove is formed in the cam ring near the inlet port and faces in the same direction as the inlet and outlet ports, and in which the groove is connected to the outlet port for balancing the cam ring.

Abstract: A vane pump has a housing comprising a pump cover and a pump housing. The pump cover is integrally formed with a hollow fixed shaft projecting therefrom and inserted loosely into a longitudinal hole of the pump housing. Received in the housing are a cam ring, a rotor eccentrically disposed for rotation within the cam ring, a plurality of vanes radially slidably provided through the rotor, a pair of annular vane rings disposed coaxially with the cam ring and an annular centering member mounted to the base portion of the fixed shaft adjacent the pump cover such that the centering member is arranged in a radially shifted position from the annular vane rings.

Abstract: A hollow housing is provided having opposite ends and defining a cavity within the housing including two slightly greater than one-half cylindrical portions opening toward and into each other and defining a pair of opposite lobes projecting inwardly of opposite sides of the cavity. The opposite ends of the housing are closed by spaced apart end walls between which the cavity is defined and a cylindrical rotor is journalled in the cavity for rotation about an axis at least substantially lying upon a straight line extending between the lobes and with the axis spaced equal distances from the lobes substantially equaling the radius of curvature of the rotor. The rotor has a central cavity therein spaced inward of the outer periphery of the rotor and three substantially equally angularly spaced and generally radial slots are formed in the rotor and extend axially therethrough with the inner ends of the slots opening into the cavity.

Abstract: A rotary vane machine includes a stator housing having an inner surface defining a stator chamber and inlet and outlet ports, a substantially cylindrical rotor rotatably mounted within the chamber, a crank axle rotatably mounted within the chamber and including a plurality of crank pins offset from an axis of rotation of the crank axle, and a plurality of vane pairs. Each vane pair includes two opposing vane members slidably received in the rotor and means for connecting the opposing vane members together and rotatably connecting the vane pair to a different one of the crank pins. Rotation of the crank axle causes the vane pairs to rotate and urge against the rotor, thereby rotating the rotor.

Abstract: A rotary vane type motor, compressor or pump in which an eccentrically mounted rotor having sliding vanes rotates within a stationary main housing or stator. The stator is in turn defined by a pair of opposed shells, each shell essentially being a half cylinder such that the internal working surface of the stator against which the vanes move, forms essentially two opposed and identical circular paths or segments. The movement path of the vanes may be further controlled by rollers affixed thereto and adapted to engage a free idling race ring mounted inside of the hollow rotor and supported by means of a stationary crankshaft. In this added way the vanes pass the internal working surface of the stator without contact at a controlled clearance and the centrifugal force of the vanes acting against the stator housing is eliminated such that increased efficiency and operation at substantially higher speeds is accomplished.

Abstract: A rotary machine includes a stator housing having an inner surface defining a stator chamber. The housing further defines inlet and outlet ports through the housing into the chamber. A substantially cylindrical rotor is rotatably mounted within the chamber for rotation about a rotor axis. A plurality of vanes are slidably received in the rotor and movable therewith about the rotor axis during rotation of the rotor, with tip portions of the vanes projecting outwardly toward the inner surface of the stator housing. A continuous, substantially cylindrical cam surface means defines a camming surface substantially concentric with the inner surface of the stator housing. A cam follower is mounted on each of the vanes contacting the substantially cylindrical cam surface. A cam follower retaining means is free to rotate with respect to the cam surface and defines a substantially cylindrical retaining surface which is concentric with the camming surface.

Abstract: This volumetric meter comprises a case with at least one inlet orifice and at least one outlet orifice interconnected by a circular passage concentric to an annular member rotatably mounted therein and provided with collapsible spaced peripheral vanes so arranged that at any time there are constantly two adjacent vanes in their spread position retaining in said passage between them a constant amount of liquid. (FIG. 2).

Abstract: A yoke mechanism for supporting a plurality of orbitable vanes includes two pair of identical yoke members to which the vanes are pivotally connected for self adjustment of the vanes within the associated fluid chamber.