Abstract: A multiple stage rotary vacuum pump comprising: a stator comprising multiple pumping stages; at least one inter-stage divider separating two adjacent pumping stages; the at least one inter-stage divider comprising two walls defining a cavity therebetween, an upstream wall bounding an upstream pumping stage and a downstream wall bounding a downstream pumping stage of the two adjacent pumping stages.

Abstract: In a vane compressor, a transmission pin is accommodated in a communication hole that provides communication between a first vane slot and a second vane slot. The transmission pin includes a loose-fit portion that is loosely inserted in a recessed portion formed in a bottom surface of each of first and second vanes, a shaft portion, and a flange portion formed between the loose-fit portion and the shaft portion and in contact with the bottom surface. A coil spring is disposed in the communication hole to urge the first vane and the second vane in opposite directions away from each other via the flange portion. The coil spring is disposed around the shaft portion and supported by the flange portion so as to urge and support the transmission pin.

Abstract: An engine having a rotor including at least one slot and at least one combustion chamber used to form a cavity is provided. The engine also includes at least one vane rollably disposed in the slot, and a block for receiving the rotor, and having a first quadrant including an inlet port, a second quadrant, a third quadrant, and a fourth quadrant having an outlet port. The vane moves through the first quadrant, drawing air into the block and the cavity. The vane then moves through the second quadrant, compressing the air. The vane then moves through the third quadrant, combusting the air, and forcing the rotor to rotate. The vane then moves through the fourth quadrant, forcing the air out of the outlet port.

Abstract: A self-priming vane pump includes a cylindrical rotor disposed in a cavity in a housing including inlet and outlet ports. The rotor defines a plurality of axially extending slots which each receive one of a like plurality of vanes. A garter spring or similar resilient annulus is disposed within the rotor and provides a radially outwardly directed force on the vanes which maintains their contact with the cavity walls during pump start-up and rapidly self-primes the pump. The spring or annulus rests against a shoulder within the hollow rotor and is retained therein by a pressed in collar.

Abstract: The present invention provides a sliding vane, which is provided through a rotor in a cylinder and reciprocates in a diametrical direction and rotates together with the rotor. The sliding vane of the present invention includes a vane body (10), which has plate seating slots (23a) and (23b) formed in the respective diametrical opposite ends of the vane body. The sliding vane further includes two pairs of compression plates (3a) and (3b), (3c) and (3d), which are provided in the plate seating slots. First springs (15) are provided in a diametrically inner end of each compression plate. A sealing rod insertion slot (7a), (7b), (7c), (7d) is formed in a diametrically outer end of each compression plate, and a second spring (19) is provided between axially inner ends of the adjacent compression plates. The sliding vane further includes a sealing rod (5a), (5b) which is inserted into and occupies the entire length of the sealing rod insertion slots of adjacent compression plates placed in each plate seating slot.

Abstract: A rotor for rotary engines and compressors is disclosed. The rotor of the present invention includes a first body unit (100a), which has a rotor housing (102) and a core (104) provided with a plurality of roller plate seats. The rotor further includes a second body unit (100b) having a structure symmetrical with the first body unit, a roller support plate (40), which is placed on each of the roller plate seats, a roller cage (42), which is provided on each of the roller support plates and has a pin roller receiving space therein, and a plurality of pin rollers (46), which are placed in the pin roller receiving space of the roller cage to ensure smooth reciprocation of the sliding vane. The rotor further includes the sliding vane (30), which is provided between the first body unit and the second body unit and reciprocates in a diametrical direction, and a spacer (106), which maintains a constant distance between the first body unit and the second body unit.

Abstract: The invention relates to a hydraulic motor having an outer casing and eccentric means for rotating a power shaft by means of fluid through a pressure chamber arrangement. The eccentric means comprise an eccentric part formed in the power shaft, a first eccentric ring between the outer casing and an inner casing, and a second eccentric ring mounted with bearings around the eccentric part and connected fixedly and concentrically to the first eccentric ring, whereby the pressure chamber arrangement is located between the first eccentric ring and the inner casing so that the first eccentric ring drives the power shaft through the second eccentric ring, and the eccentric rings form a substantially non-rotating entity that only performs an eccentric movement and by means of this eccentric movement rotates the power shaft.

Abstract: An improved vane for axial vane rotary devices such as pumps, compressors and expanders comprising at a pair of axially movable inner housing seal pieces defining and upper camming surface and a lower edge. The vanes are provided with spaces for receiving the seal pieces and the spaces have at least one edge corresponding to the camming surface of the seal piece. In one embodiment a median portion of a single piece vane is cut away to define a space in which the seal pieces are received. In another embodiment the vane is divided into two axially slidable sections and a corner portion of each section is cut away to provide a space for receiving a seal piece. During operation the seal pieces are cammed radially downward during axial movement to bring the lower edge of the seal piece into contact with the inner housing of the device rotor to improve sealing and reduce leakage of pressurized fluid between the vane and the inner housing.

Abstract: The present invention relates to a compressor, and more particularly, to a compressor for continuously extruding and feeding a compressing medium introduced into a compressing chamber, by means of a pressing pin member being elastically contacted with an inner circumference surface of the compressing chamber and a rotary pressing member having two wings at left and right.

Abstract: A positive-displacement pump including a rotating vane disposed within a pump housing. The rotating vane is driven by a rotating drive shaft and the rotating vane is radially displaceable relative to the drive shaft wherein the ends of the rotating vane carry sealing strips that adjoin an inner wall of the pump housing. At least one energy storage device is included for engaging the vane and holding the sealing strips in sealing contact with the housing.

Abstract: A positive-displacement pump including a rotating vein disposed within a pump housing. The rotating vein is driven by a rotating drive shaft and the rotating vein is radially displaceable relative to the drive shaft wherein the ends of the rotating vein carry sealing strips that adjoin an inner wall of the pump housing. At least one energy storage device is included for engaging the vein and holding the sealing strips in sealing contact with the housing.

Abstract: A vane pump or motor has structural features for ensuring a substantially constant relationship between rotor vanes (30) and a surrounding wall 44) of a rotor chamber (15) of a stator (16). This is done by changing shapes of either the surrounding wall or the guide tracks to be out of round such that, during a full rotation, the arrangement of the rotor vanes (30) to the surrounding wall (44) remains the same. That is, a diameter (b) of the rotor chamber (15) in an axial plane (a-a), defined by maximum and minimum radial movement of a rotor vane (30), is greater than a diameter (c) perpendicular thereto, or a diameter (d) of the guide tracks (59) perpendicular to the axial plane is greater than a diameter (e) lying in the axial plane (a-a) of the guide tracks (59). An intake and an exhaust are provided in one of two symmetrical sections of the rotor chamber (15) defined by the axial plane (a-a). Elastic guide rings, rotatable with the rotor, can also be used.

Abstract: A grooved double combustion chamber rotary engine includes a rotary compression unit, a rotary gas motor unit, and a combustion chamber, the rotary compression unit being connected to the respective rotary gas motor unit and the combustion chamber to constitute a stroke, and two strokes being alternating to achieve power output.

Abstract: A motor/pump (10) comprises a housing (12) defining a cavity (18) between sealed ends (14 and 16). Rotor (24) having a substantially hollow body (26) is supported by the housing (12) for rotation within the cavity (18) about a rotation axis (28) which is parallel to but offset from longitudinal axis (30) of the cavity (18). A plurality of vanes (32) are retained by the rotor (34) for movement radially of the rotation axis (28). ne vanes (32), rotor (24) and housing (12) are juxtaposed so that a substantially sealed chamber is formed between adjacent vanes (32), inner surface (34) of housing (12) and outer circumferential surface (36) of the rotor body (26). First and second ports (20, 22) are formed in the housing (12) and located so as to be disposed in different chambers.

Abstract: A rotary pump having a stator (1) pierced with a housing (11) delimited by a cylindrical sidewall (110). A cylindrical rotor (2) located tangentially inside of the housing (11) off-center to an axis (X). The cylindrical rotor (2) is driven in rotation about the axis (X). A vane which diametrally passes through the rotor (2) has first and second opposite edges (31,32). The first and second opposite edges (31,32) bear against the sidewall (110) and are separated from one another by a distance subjected to variations during rotation of the rotor (2). The vane (3) is made of a thin sheet of material which offers elastic resistance to bending. The thin sheet has an undulation part (33,34) which absorbs such variations in distance experienced by the first and second opposite edges (31,32) of the vane (3).

Abstract: An engine having one stage of combustion between a rotary compressor and a rotary motor, and another stage of combustion within the motor, includes compressor and motor vane rotors that rotate in respective housing portions on a common drive shaft; first and second transfer passages fluid connected between respective exhaust ports of the compressor and intake ports of the motor, first and second combustion chambers being formed within the respective transfer passages, the combustion chambers being periodically sequentially pressurized by gas flow from the compressor exhaust ports. First and third cam-actuated poppet valves in the first and second transfer passages prevent upstream gas flow from the respective combustion chambers into the compressor. Second and fourth cam-actuated poppet valves in the first and second transfer passages prevent upstream gas flow from the motor into the respective combustion chambers.

Abstract: A multiple rotary fluid machine which includes a stator and a plurality of coaxial rotors held together, sealing vanes and fluid ports which are all offset alternately in the radial plane and form a multiplicity of rotary fluid machines or stages which are dislocated in the radial plane with respect to each other such that the total flow or torque produced by the multiple fluid machine is uniform at any time in the operating cycle or vary during the working cycle in any predestined manner.

Abstract: A rotary pump comprising a stator body having a bore and a rotor assembly mounted eccentrically in the bore to form a cavity between the stator body and the rotor assembly. The rotor assembly has two blades slidably positioned in diametrically opposed slots in the rotor assembly. In use of the pump the two blades are substantially in contact with an inner wall of the stator body. The stator body has an inlet and an outlet to allow, in use of the pump, fluid being pumped to enter into and be expelled from the cavity by means of the rotating vanes. The rotor assembly is of integral construction with each slot defined therein having an arcuate base and each blade has an end portion substantially conforming to the arcuate slot base.

Abstract: A multiple rotary fluid machine which includes a stator and a plurality of coaxial rotors held together, sealing vanes and fluid ports which are all offset alternately in the radial plane and form a multiplicity of rotary fluid machines or stages which are dislocated in the radial plane with respect to each other such that the total flow or torque produced by the multiple fluid machine is uniform at any time in the operating cycle or vary during the working cycle in any predestined manner.

Abstract: A rotary fluid machine including a rotor provided with a plurality of lobes, a ring surrounding the rotor and with the lobes defining a plurality of chambers, a housing surrounding the ring and provided with a plurality of depressions which together with the ring define a plurality of chambers, a plurality of sealing vanes extending through the ring and engaging with the outer surface of the rotor and an inner surface of the housing, and fluid passages provided in the ring adjacent the sealing vanes with alternate fluid passages connected together.

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 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: There is disclosed for use in powering a hoist or the like a pressured fluid powered machine of the rotary vane motor or pump type, improved means for "lifting" and maintaining the vanes in pressure-sealing contact with the wall of the machine casing, and for substantially preventing pressure losses around the ends of the vanes particularly when the machine is starting up and/or operating at low speeds. A pair of resilient "lifting rings" are provided to ride under the vanes at opposite ends thereof and "air cushion" float about specially shaped seals fixed upon opposite ends of the casing, so as to function at all times to maintain the vanes in contact with the machine casing inner wall. The seals operate to prevent fluid leakages via the vane accommodating slots in the machine rotor around the ends of the vanes; thereby providing the machine with a smooth torque output capability at start-up and low operating speeds, such as is of particular importance in hoisting machine systems.

Abstract: A rotary machine of the type which includes a rotor rotatably mounted in a stator and carrying vanes mounted for radial movement to cooperate with the inner surface of the stator to, for example, compress a gas drawn into the stator housing through an inlet port. The necessary radial movement of the vanes during rotation of the rotor is accomplished by means of cam followers associated with the vanes which ride on stationary cam surfaces. The cam surfaces are round and have their axes positioned eccentrically with respect to the axis of rotation of the rotor. Tension springs draw the vanes radially inwardly of the rotor so that the cam followers are held in contact with the cam surfaces. This provides positive vane control and prevents vane lifting while minimizing contact between the vane tips and the stator inner surface.

Abstract: Disclosed is a vane support assembly for interconnecting and supporting the diametrically opposed vanes in rotary type positive displacement apparatus. Alternate embodiments translatably couple the support rods with the vanes or rigidly couple the support rods with the opposed vanes and translatably couple intermediate portions thereof. Alternate forms of bearing assemblies are disclosed in conjunction with the assembly as well as various positioning of the associated springs.

Abstract: The invention discloses a vane-type rotary machine of the type in which at any angular position of a rotor which has a plurality of vanes slidably fitted into the radial vane slots and is rotated in a cam ring, the satisfactory contact of the tip of each vane with the inner surface of the cam ring may be ensured so that the discharge or intake through the ports formed through the side wall of the cam ring may be carried out with maximum efficiency.

Abstract: Disclosed is a vane support assembly for interconnecting and supporting the diametrically opposed vanes in rotary type positive displacement apparatus. Alternate embodiments translatably couple the support rods with the vanes or rigidly couple the support rods with the opposed vanes and translatably couple intermediate portions thereof. Alternate forms of bearing assemblies are disclosed in conjunction with the assembly as well as various positioning of the associated springs.