Abstract: A rotary fluid device including an outer housing assembly and an inner rotating arrangement adapted to rotate relative to the outer housing assembly, the outer housing assembly including a rotor housing and the inner rotating arrangement including a rotor dimensioned to rotatably fit within the rotor housing. One of the rotor and the rotor housing include lobes extending in a radial direction relative to respective inner and outer circumferential surfaces and the other of the rotor and the rotor housing includes followers and follower recesses in which the followers are moveably located. Three pressure zones may be defined between the followers and follower recesses the three pressure zones including an intermediate pressure zone and two laterally pressure zones on opposing circumferentially lateral sides of the intermediate pressure zone.

Abstract: The present invention introduces a retrofit method of regenerative braking where no components of an automobile are to be replaced or removed and none of their functionality is modified. The recovering energy system is implemented as an additional, one piece, complete device, placed onto the existing automobile wheel's hub, and covered by the automobile's wheel. The system includes a housing, turbines, accumulators, and valves which act to both store and dispel energy as needed. This method of regenerative braking is therefore applicable to all the automobiles, independent or their power source, to newly built automobiles and those already on the road.

Abstract: A rotary fluid machine 10 has a rotor 12, a stator 14, and a plurality of gates. The rotor 12 and stator 14 are rotatable relative to each other and arranged one inside the other to define a working chamber 18 there between. Gates 16 are supported in radial gate slots 20 formed in the rotor 12 and cyclically extend from and retract into the gate slots 20 as the rotor 12 rotates about stator 14. A plurality of demountable lobes is supported on an outer circumferential surface 24 of stator 14. The surface 24 forms a surface of the working chamber 18. Circumferential surface 24 is composed of an intermediate surface 48 which extends in an axial direction and opposite curved surfaces 46. The gate 16 has opposite rounded corners 130 separated by an axial planar surface 132.

Abstract: A hydraulic motor or pump (2) that generates a relatively high torque, and further allows an unprecedented high specific displacement that makes the motor suitable yaw motor for large wind turbines of horizontal axis wind turbines or wheel yaw motor on Heavy Carriers. The characteristic by the hydraulic motor or pump (2) is that if the number of barriers in the annular cavity (12) of engine or pump is n then the number of radial displaceable sliders (20) will be larger than (n+1).

Abstract: A balance shaft module equipped with a dual pump including a main oil pump and a sub-oil pump may include a pump rotor rotatably coupled to a housing, a discharge space formed in the housing for discharging oil in the sub-oil pump, a pulse chamber formed in the housing to increase the discharge space, wherein the oil discharged through the discharge space is merged with the oil flowing through the pulse chamber such that discharge pulse pressure is reduced, and an eccentric washer having a discharging opening space formed by cutting off a portion inward from the outside, wherein the discharge opening space of the eccentric washer is connected to the discharge space to fluid-communicate with the discharge space of the pump rotor.

Abstract: An oil pump in which pulsation vibration due to the dynamic pressure on the discharge port side can be attenuated. In an oil pump for transporting fluid from a suction port to a discharge port by the rotation of a rotor mounted in a pump casing, a resonator configured from an introduction path and a chamber is formed with respect to a discharge flow channel that communicates with the discharge port in the flow direction of the discharge flow channel. A channel in a direction different to the flow direction of the discharge flow channel is communicatingly formed in the vicinity of the resonator.

Abstract: An internal combustion rotary engine is described, adapted to be used both for motor vehicles and ground machines (alternators, compressors, pumps and the like) or water craft or any type. The used fuels are the same of the presently used reciprocating engines. This engine comprises two rotors one inside the other, rotating in the same direction and at the same number of revolutions on two non concentric axes. The eccentricity between the two axes creates a crescent like chamber divided into four parts by four mobile elements mounted on the internal rotor, said elements being in turn constituted by two bodies that fit continuously to the inner surface of the external rotor thus ensuring the tight seal between the chambers. The efficiency of this motor is more than double of a reciprocating engine of the same displacement, with consequent halving of consumptions and emissions of carbon monoxide and dioxide.

Abstract: The invention relates to an oscillating slide machine working on an eccentric circulatory motion, whereby the oscillation guide grooves (19) on the inner rotor (5) are provided with groove front edges (20) and groove rear edges (21) of differing heights, such that the diameter of the imaginary circle (17), connecting all groove front edges (20), is smaller than the diameter of the circle connecting all the groove rear edges (21).

Abstract: A rotary compressor having a housing, a rotor positioned within the housing defining a compression chamber, the rotor rotatable about an axis of rotation, a discharge port in the rotor in fluid communication with the compression chamber, and a valve assembly mounted to the rotor to regulate the pressure of the fluid within the compression chamber. In one embodiment, the valve assembly is canted or obliquely aligned with respect to the axis of rotation of the rotor and a radial axis perpendicular to and intersecting the axis of rotation. Aligning the valve assembly in this way allows the displacement of the valve head of the valve assembly to be substantially collinear with forces acting on the valve head.

Abstract: A rotary compressor for compressing a working fluid includes a housing having an oil sump. A stationary shaft extends into the housing and includes a longitudinal passage. The longitudinal passage has an oil inlet in fluid communication with the oil sump. A working fluid inlet receives the working fluid. A motor has a stator and a rotor. The rotor is rotatably mounted on the shaft within the housing and includes an internal compression chamber in fluid communication with the longitudinal passage. A roller is rotatably mounted on the shaft and eccentrically disposed within the compression chamber. The roller is coupled to the rotor such that rotation of the rotor rotates the roller and thereby compresses the working fluid within the compression chamber.

Abstract: A noise-reduced internal gear pump incorporating an inner rotor having an addendum formed by a smooth curve and a dedendum formed by a hypocycloid. The tooth profile of the outer rotor is determined by the following steps. The center Oi of an inner rotor 1 is revolved around the center Oo of the outer rotor so as to form a circle S having a diameter of 2e+t, where “e” is the amount of eccentricity between the inner and outer rotors and “t” is the maximum value of the interrotor clearance between the outer rotor and the inner rotor pressed against it. The inner rotor 1 is rotated on its axis 1/n times while its center Oi makes one revolution in the circular orbit S, where “n” is the number of teeth of the inner rotor. The envelope of the group of the tooth profile-curves of the inner rotor formed by its revolution is used as the tooth profile of the outer rotor.

Abstract: A compressor comprises a sealed chamber to which a suction pipe and a discharge pipe are communicated, a motor unit fixed in the sealed chamber and consisting of a stator and a rotor for generating rotating force by electromagnetic interaction between the stator and rotor, and a compression unit sucking, compressing and discharging compressible fluid according regular volume change and opening/closing of valve caused by rotating force of the motor unit, wherein the compression unit is disposed in the rotor to miniaturize and lighten the compressor, to reduce input energy of the motor unit, and to reduce vibration noise.

Abstract: Expansible chamber apparatus for a positive displacement, high volume, low friction, reversible rotary pump for gases and/or liquids. Two or more chambers are provided, defined in part by one or more small abutments that move radially in a slot to switch or redirect fluid flow with minimal loss of fluid mechanical energy. A complementary pair of chambers, formed by a single groove, is radially divided by a concentric land ring and is longitudinally segmented by the abutment, which seals the chambers against reverse leakage. The abutment is slightly smaller in radial dimension than the groove and is floated to avoid hard contact with the inner and outer land ring surfaces of the groove by a balancing of the Bernoulli effects that develop. The apparatus can also be operated as a fluid compressor, as a motor and in other applications, in single cycle or multiple cycle operation. The pump provides substantially non-pulsating fluid flow in one or more stages.

Abstract: A rotary hydraulic machine (10) for incorporation in a drill string (92) of a well formation (86). The machine (10) is particularly adapted to act as a motor and includes an outer housing (11) of a generally cylindrical configuration having a radial inner surface (12). Rotatably mounted within the housing (11) is a shaft assembly (13) including a shaft (14) upon which a stator (15) is mounted. The stator (15) includes a plurality of lobes (16) which have a maximum radius approximately equal to the radius of the surface (12). A plurality of gates (35) are radially movably mounted in the housing (11) and engage the stator (15). The shaft (14) is hollow to provide for the delivery and the removal of hydraulic fluid to the working chambers (45 and 46) of the machine (10).

Abstract: A rotary hydraulic machine (10) for incorporation in a drill string (92) of a well formation (86). The machine (10) is particularly adapted to act as a motor and includes an outer housing (11) of a generally cylindrical configuration having a radial inner surface (12). Rotatably mounted within the housing (11) is a shaft assembly (13) including a shaft (14) upon which a stator (15) is mounted. The stator (15) includes a plurality of lobes (16) which have a maximum radius approximately equal to the radius of the surface (12). A plurality of gates (35) are radially movably mounted in the housing (11) and engage the stator (15). The shaft (14) is hollow to provide for the delivery and the removal of hydraulic fluid to the working chambers (45 and 46) of the machine (10).

Abstract: A positive-displacement piston mechanism includes a small rotor integrated with a main axis and biased against a cylindrical large rotor for holding a bearing-housing. Slant sliding slots are formed at facing places in equally divided space between the large rotor and the small rotor. Vanes having an angle are fitted into the slots as if they were bridges, and an inlet and an outlet are provided on side-housings.

Abstract: The present invention relates to an eccentric-type vane pump and, in particular, to an eccentric-type vane pump being capable of generating minimum heat and noise due to frictional force produced from rotation of the vane pump. The vane pump comprises a rotor connected to a rotor shaft having vanes slidably received in vane grooves and recessed within a space in the periphery of the rotor for moving radially by rotation of the rotor. A cylinder ring is positioned eccentrically around the rotor and is rotated by the frictional force produced from abutting the front end of the vanes. A pump chamber is formed between the rotor and the cylinder ring. A cylinder body is provided having a bearing between the outer surface of the cylinder ring and the cylinder body. A front body is connected to a first end of the cylinder body. One end of a rotor shaft is supported on a recess formed on one side of the front body.

Abstract: A hydraulic power transmission system including a stationary inner barrel connected between a hydraulic oil inlet pipe and a hydraulic oil return pipe and having a plurality of openings spaced around the periphery and a plurality of movable blocks moved in and out of the opening, and two outer barrels fixedly connected together with a gasket ring mounted there between and having a respective series of involute arched guide planes space on the inside and raised one behind another, wherein when a hydraulic oil is forced through the hydraulic oil inlet pipe into the inner barrel, it forces the arched movable blocks out of the opening of the inner barrel and flows through the involute arched guide planes of the outer barrel to push the vertical steps between each two arched guide planes, causing the outer barrels to rotate.

Abstract: A rotary compressor has a motor-driven rotary body forming a cylindrical chamber in which a roller is rotatable about an axis eccentrically related to the axis of the chamber. The roller is of less diameter than the chamber so that the roller and chamber walls form a space. Vanes are slidably mounted in the body and are spring biased radially against the roller to divide the space into pockets. The volume of each pocket expands and contracts as the body is rotated. A gas inlet and a gas outlet are disposed at an axial end of the chamber. Each pocket communicates with the inlet to draw-in gas during the volume expansion. The drawn-in gas is pressurized during an initial phase of the volume contraction and then discharged through the gas outlet during a subsequent phase of the volume contraction.

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 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 plurality of fluid chambers defined by a housing and a rotor and by a plurality of lobes and seals engaging with the lobes provided on the housing and the rotor with the number of seals and lobes being unequal and fluid passageways provided in each of the plurality of chambers with alternate fluid passageways being connected together.

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: An improved pump assembly is used to supply fuel to an aircraft engine and includes a positive displacement pump which supplies fuel during low speed operation of the pump assembly and a centrifugal pump which supplies fuel during relatively high speed operation of the pump assembly. The positive displacement pump has a plurality of vanes connected with an impeller of the centrifugal pump. The vanes are forced radially inwardly against a stationary cam surface by fluid pressure. The fluid pressure is conducted from an outlet of the positive displacement pump through a passage in the impeller of the centrifugal pump to pressure chambers disposed at outer ends of the vanes. By providing the fluid pressure passage in the impeller of the centrifugal pump, the axial length of the pump assembly tends to be minimized. The positive displacement pump is rendered ineffective to pump fluid when the output pressure from the centrifugal pump equals the output pressure from the positive displacement pump.

Abstract: A variable displacement vane type hydraulic pump of simple construction automatically varies its output flow rate, between a maximum value and zero, in response to changes in the output pressure. The pump is characterized by a laterally shifting flow modulating member located in a central recess of a vane carrying rotor and whose lateral position is dictated by the pressure existing at the outlet port. The pump can run continuously at a no-flow condition without overheating or stalling and its rotor direction may be reversed by merely reversing the functions of its two ports.

Abstract: A rotary tool driving an abrasive member about a rotational axis is disclosed. The tool includes a fluid motor comprising an inner stator assembly having a longitudinal stator body and trunnions extending generally axially endwise from the stator body, the trunnions being eccentrically offset from the central longitudinal axis of the stator body. One of the trunnions having an inlet passage and the other an outlet passage. Bearings are carried by the trunnions and a rotor assembly is journaled on the bearings and is rotatable about the inner stator assembly. The outer rotor assembly includes a rotor body having a generally cylindrical bore therein for reception of the eccentric stator body when the stator assembly is journaled on the bearings concentric with the trunnions. The cylindric bore and the eccentric rotor body define an eccentric space therebetween.

Abstract: A rotary engine, either prime mover--or pump or compressor--comprises as its basic element a circular casing in which is journalled rotatably a hollow, cylindrical body, the interior wall face of which ascribes a space delimited by recesses alternating with portions extending towards the center of the space, each recessed portion being diametrically opposite an inwardly extending portion, a solid cylindrical body being positioned within the space, a throughgoing bore extending across the axis of the solid cylindrical body in which bore a piston like member can perform a reciprocal movement. In the case of an internal combustion engine explosion and expansion occur in the space within the hollow cylindrical body and cause it to rotate: rotative movement is derived from a shaft of the body. A drive could be applied to the shaft so that a fluid could be compressed in the space. In use as a pump the fluid to be conveyed is sucked into the working space and expelled therefrom.

Abstract: A fluid driving or fluid driven machine includes an outer cylinder housing stationary piston. The piston includes a generally annular flexible band of smaller circumference than the inner circumference of the cylinder, and a rotary body accommodated within the band. The rotary body has three rollers for urging the band against the inner surface of the cylinder at three angularly spaced locations so that the band defines with the cylinder three working chambers. Two separating members mounted on the cylinder are biased into contact with the band.When the rotary body is rotated the band makes nonslip contact with the wall and rotates the working chambers about the axis of the rotary body. Each separating member separates each working chamber as it passes into two discrete enclosures. A port is located on each side of each separating member to allow communication with the two discrete enclosures. The machine can be operated as a compressor when the rotary body is driven or as an engine to drive the rotary body.

Abstract: Rotary hydraulic device comprising a stator 1, a rotor 2 and closing flanges together forming a tore that can amount to several meters in diameter. The rotor 1 has radial grooves 3 each receiving a valve 4 whose lower face moves on the periphery of the stator which provides swept-volume recesses A, B, C, D limited by a cylindrical part r connected to the periphery of radius R by ramps, the differential valves 4 receiving the thrust of the drive fluid through conduits coming out in the swept volumes.

Abstract: A fuel pump assembly for supplying fuel to a gas turbine engine has a centrifugal pump, including an impeller, that furnishes the necessary pressure for engine operation at high engine speeds. A vane pump, attached to the back side of the impeller of the centrifugal pump, supplies fuel to the engine for starting and acceleration to idle. The vane pump is of the type having a stationary centrally disposed cam and an annular rotor with radially inwardly directed vanes which ride over the surface of the cam. Before idle speed is attained, the vanes which are substantially hydraulically balanced and made of a light plastic material are adapted to lift off the surface of the cam without the need of pressure relief behind the vanes.

Abstract: A light weight fluid energy converting device utilizing a fluid motor as supporting drive hub for a wheel or other driving attachments; the motor being of the reverse positioned vane type comprising a cylindrical rotor means enclosing a fluid channeled cammed stator actuating means, all supported on a basic stationary spindle by frictionless bearing means; one large end of the spindle being adapted to cycle a powering fluid in and out of the motor with an exterior controlled generating source; the motor housing, power ring, vanes, seal plates and stator body being constructed of light weight strong plastic materials easily adaptable for rapid mass production by known injection molding processes; the use of tubular metal coring assembly inserts embedded in the plastic mass serving as fluid flow channels and as stress relief reinforcing elements.

Abstract: A rotary vane pump incorporating radially displaceable sliding vanes. The sliding vanes can be electromagnetically actuated in order to permit use of the rotary vane pump as a hydraulic brake.

Abstract: An inner component of the fluid machine has an outer circumferential surface, and an outer component has an inner circumferential surface which eccentrically surrounds the outer circumferential surface. One of the components is rotatable relative to the other component. The inner component is formed with at least two pair of diametrically opposite guide slots each having an outer end open at the outer circumferential surface and an inner end, the inner ends communicating with one another and each of the guide slots receiving a sliding vane. The sliding vanes in the respective diametrically opposite guide slots are biased apart by at least one biasing spring located between inner ends of the guide slots.

Abstract: The invention relates to a system for propulsion utilizing a vapor heat transfer generator to create high pressure steam directly from water vapor which is transferred to rotary cylinder motors of positive displacement design, which are run on ball and roller bearings to eliminate friction facilitating high speed operation.

Abstract: A hydraulic wheel, more specifically a hydraulic energy converting device, having an inner stator provided with a peripheral camming surface and a rotor, enclosing the stator, and being rotatably mounted relative thereto; the rotor being adapted to cooperate with the camming surface of the stator to define a plurality of liquid-tight working chambers between the camming surface and the stator. Each working chamber has an inlet at one end and an outlet at the other end, the stator having a pressurized liquid distribution system to distribute pressurized liquid from an outer source to the respective inlet of each working chamber and a liquid collection system, independent of the distribution system, adapted to collect liquid from the respective outlet of each working chamber and direct it to the said outer source.