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 positive displacement rotary pump with an improved impeller design integrating replaceable wiper inserts. The impeller generally has or more lobes and an equal number of conjugate surfaces. Each lobe has an arcuate peripheral end comprising a plurality of wiper blades. The wiper blades improve efficiency by making a seal with a pump chamber or the conjugate surface on the other impeller as it rotates. The wiper blades are arranged such that constant and successive contact between wiper blades and impellers is achieved.

Abstract: A rotary device for use with a fluid, having a housing, a rotor, and a vane having a respectively associated wiper. The housing has a tubular surface defining in part a tubular volume, the tubular volume segregated into at least a pumping zone and a working zone. The rotor is mounted for rotation and has a body mounted within the tubular volume and a plurality of slots. Each slot extends at least generally radially from the axis. Each vane is mounted at least partially within each slot. As the rotor rotates, each vane rotates within the tubular volume and extends and retracts within the tubular volume. The wiper contacts the tubular volume of the housing while the respectively associated vane rotates through the pumping zone, and wherein the wiper does not contact the tubular volume of the housing while the respectively associated vane rotates through the working zone.

Abstract: A rotary device includes a housing having a tubular surface. The surface has an throughpassing axis and first and second ports. A rotor body rotates about the axis and has a plurality of slots extending generally radially from the axis. A vane is mounted in each slot for reciprocation such that the surface can be swept by the vanes as the body rotates. A seal permits fluid to flow into and out of the device substantially only via the first and second ports such that the vanes create chambers which decrease in volume when in communication with the first port and increase in volume when in communication with the second port. The tubular surface is oval in cross-section.

Abstract: In one aspect, described is a rotor for a rotary internal combustion engine where a first face seal biased axially outwardly away from the first end face has opposed curled ends abutting a first seal element of a respective one of the adjacent apex seal assemblies, and a second face seal biased axially outwardly away from the second end face has opposed curled ends abutting a second seal element of a respective one of the adjacent apex seal assemblies.

Abstract: A pump includes a housing and a shaft rotatable about an axis. The shaft has a shaft diameter and has a portion disposed within the housing. A plurality of retractable vanes is coupled to the shaft and each vane includes a first end that contacts the housing. A seal element is positioned to define a seal between the shaft and the housing. The seal element includes a first bushing, a second bushing, and a dry seal assembly including a wiper that defines a diameter that is smaller than the shaft diameter.

Abstract: A double internal gear pump has two internal gear pumps having a common pump shaft. A partition is formed between the two internal gear pumps, and the partition has a frustoconical circumferential surface which contacts an opposing surface in a sealing manner in a pump housing. Pump inlets and pump outlets can be led through the partition. The frustoconical circumferential surface of the partition is advantageous because it removes the necessity of pressing into the pump housing and canting the partition. In addition, a seal on the circumference of the partition is ensured with great reliability.

Abstract: The present invention is an engine, which includes a positive displacement compression process, a variably fueled, continuous combustor and/or heat exchanger, and a positive displacement, work-producing expander. This arrangement avoids the traditional stochiometric mixture requirements utilized in spark-ignition based engines and the emission problems associated with diesel engines.

Abstract: The invention is to reduce flutter and wear and improve the serviceability and wear life of tip seals for roots blower and screw type compressor superchargers where used for improved supercharger output and efficiency. As the seals travel over the outlet opening, the seals move outward in their slots, leading to flutter which may shorten their useful lives. As each seal reaches the center of the outlet opening, it is forced back into its groove by engaging a valley of the mating rotor with the likelihood of increased wear. The invention provides longitudinally spaced support bars extending laterally across the opening in the directions of rotation of the rotors. The support bars have inner surfaces machined with the associated rotor cavity bores and thus smoothly support the seals as they ride over the support surfaces. The support reduces the flexing of the seals and the resultant wear.

Abstract: This invention relates to a twin-plate, rotary compressor and refers particularly, though not exclusively, to a twin-plate, rotary compressor comprising two conical plates for relative rolling motion within a casing, there being a line contact between the two conical plates; the line contact being maintainable during operation of the compressor; a central seal for sealingly engaging correspondingly-shaped recesses of the two conical plates; and an outer seal in mating relationship with the two conical plates; wherein the central seal is mounted on a drive shaft, the drive shaft being operatively connected to an output shaft of a motor; wherein the drive shaft, the central seal and the outer seal are for rotation about a third axis of rotation, the third axis of rotation being coincident with a longitudinal axis of the drive shaft and a center of the central seal.

Abstract: A vane pump includes a rotor accommodated in a rotor chamber; a plurality of vanes attached to the rotor, each of the vanes having a leading end adapted to make sliding make a contact with an inner peripheral surface of the rotor chamber. Further, the vane pump includes working compartments surrounded by inner surfaces of the rotor chamber, an outer peripheral surface of the rotor and the vanes, the working compartments being adapted to undergo a volume change as the rotor is rotatably driven; an inlet port through which a working fluid is drawn into a working compartment whose volume is being increased; and an outlet port through which the working fluid is discharged from a working compartment whose volume is being decreased; and one or more blade base members protruded from portions on the outer peripheral surface of the rotor between the vanes adjacent to each other.

Abstract: The invention concerns a hydraulic machine (1) with an externally toothed gear wheel (2) and an internally toothed ring (3), which is made of a sintered material or of a ceramic material. It is endeavored to provide good operation behaviour at low costs. For this purpose, the toothed ring (3) is provided with a sealing element (7) in the area of its outer circumference.

Abstract: A pump rotor for a screw pump includes a shaft, a first set of threads disposed on a portion of an outer surface of the shaft, at least one thread of the first set of threads including a groove disposed on an end portion thereof, and a ring seal disposed on the groove such that the ring seal is configured to protrude outwardly from the groove and to rest against an inner surface of a liner of the screw pump, and the groove is sized so as to allow the ring seal to move radially with respect to the plurality of threads as the rotor is deflected.

Abstract: A fluid pressure driven generator which includes a generator housing and a rotor positioned within the generator housing. A power shaft is positioned in the rotor with a moment arm connected between the power shaft and rotor. A high fluid pressure inlet will be formed in the housing and connected to a source of high pressure fluid. The housing will also have low pressure outlet which will feed a source of low pressure fluid.

Abstract: A pneumatic cylinder of pneumatic tool capable of avoiding failure of bearings, including: a cylinder body having an internal cylindrical chamber in which a rotor is disposed, a rotary shaft being fixedly connected with the rotor, whereby high pressure air can flow into the cylinder body to drive and rotate the rotor and the rotary shaft; two end caps respectively covering two ends of the cylinder body, two ends of the rotary shaft respectively extending out of the cylinder body through the through holes of the two end caps; two bearings respectively installed in the cavities of the two end caps and fitted on two ends of the rotary shaft; and two airtight rings located between the bottom walls of the cavities and the bearings to achieve an airtight effect between the bottom walls of the cavities and the bearings.

Abstract: A rotary engine includes a housing, a shaft, a plurality of main pistons, a plurality of main piston rods, a plurality of following pistons, a plurality of following piston rods, a following piston timing mechanism and a plurality of timing bars.

Abstract: A fluid pressure driven generator which includes a generator housing and a rotor positioned within the generator housing. The rotor will have an internal offset gear which is engaged by a spur gear on a power shaft. A high fluid pressure inlet will be formed in the housing and connected to a source of high pressure fluid. The housing will also have low pressure outlet which will feed a source of low pressure fluid.

Abstract: A rotary engine having end plates attached to a rotor and moving therewith. A rotor has a plurality of blades reciprocally mounted therein and placed within a housing. A chamber is formed between the blades, the rotor, the end plates, and a cylindrical stator. The end plates move with the rotor, thereby improving sealing. The structure permits easy assembly and manufacture and substantially reduces sealing problems associated with rotary engines. The rotary engine may be applied to many applications where rotational motion is needed.

Abstract: A rotary engine having end plates attached to a rotor and moving therewith. A rotor has a plurality of blades reciprocally mounted therein and placed within a housing. A chamber is formed between the blades, the rotor, the end plates, and a cylindrical stator. The end plates move with the rotor, thereby improving sealing. The structure permits easy assembly and manufacture and substantially reduces sealing problems associated with rotary engines. The rotary engine may be applied to many applications where rotational motion is needed.

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 sliding-vane compressor is described which contains a single rotor with compressor and expander sections, together with a reduced number of parts and efficiency improvements compared to conventional compressors.

Abstract: A fluid rotary apparatus includes a casing, a plurality of screw rotors, and a driving device. The casing has a suction hole, a discharging hole, and an inner tapered surface. The rotors have thread grooves and are rotatably supported within the casing to be rotated synchronously in mesh with each other. An outer peripheral surface of each rotor has a flat surface approaching or sliding in contact with the inner tapered surface of the casing. The driving device rotates the rotors. Fluid is drawn through the suction hole, compressed, and discharged through the discharging hole by utilization of a change of a volume of a space defined by the plurality of screw rotors and the casing. A band-like chip seal is provided at the flat surface of each rotor. The chip seal has dynamic pressure notches at it surface to produce dynamic pressure from viscous fluid.

Abstract: A fluid rotating apparatus includes a casing having a gas inhaling inlet and a gas discharge outlet, rotors driven in the casing by a driving mechanism and having fluid-transporting grooves which engage each other in synchronous rotation, and bearing portion for supporting the rotors. A communicating path is formed at one of the rotors and the and the casing for communicating a gas discharge-side inner space and a space defined by an inner surface of the casing and the fluid-transporting groove of an outer surface of each rotor with each other. The gas discharge-side inner space is defined by an end surface of the rotor opposite to a gas inhaling-side surface thereof, and a sealing portion which is formed between the rotor and the casing to prevent fluid from flowing into the gas discharge-side inner space.

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: A scroll type fluid apparatus includes a casing having a flange member defining an annular recess therein, a drive shaft journalled on the casing and having a crank shaft formed at an inner end of the drive shaft extending in the casing, an orbiting scroll member rotatably mounted on the crank shaft and having a mirror-finished plate and a scroll wrap extending upright on the plate, a stationary scroll member mounted on the casing and including a mirror-finished plate having scroll wrap extending upright thereon and engaged with the scroll wrap of the orbiting scroll member, a suction port communicating with the interior of the annular recess of the annular flange member, a discharge port, and a sealing member disposed in the annular recess of the annular flange member for sealing a compression chamber within the annular recess from the interior of a body of the casing.

Abstract: A scroll fluid machine, such as a scroll vacuum pump or a scroll compressor, is disclosed and is capable of discharging substantially oil-free fluid. The scroll fluid machine comprises a casing, a drive shaft having an eccentric shaft portion, a scroll rotor supported on the eccentric portion of the drive shaft for revolution and having a scroll wrap, a scroll stator having a scroll wrap and attached to the open end of the casing with its scroll wrap in engagement with that of the scroll rotor to define a closed fluid compressing space together with the scroll wrap of the scroll rotor. Thrusts acting on the scroll rotor are sustained by thrust bearing portions formed in the end surface of the scroll stator, and an annular sealing member preformed of a flexible material in a U shape is disposed in a space defined between and by the scroll rotor and the scroll stator to isolate the closed fluid compressing space from the interior of the casing.

Abstract: A piston rotor and a chamber partitioning rotor are continuously rotated unidirectionally about fixed rotational axes intersecting at an acute angle within a spherical chamber enclosed by a housing. Simultaneous rotation of the rotors and relative angular movement therebetween occurs because of a pivotal joint interconnecting such rotors at the intersection of the rotational axes coinciding with the geometric center of the spherical chamber. Pressure cavities formed between the rotors within the spherical chamber are volumetrically varied in response to the relative movement of the rotors. For internal combustion engine operation, port controlling dome segments within the chamber are rotated at a reduction drive ratio to the chamber partitioning rotor through planetary gearing.

Abstract: A rotary engine has a first ring-shaped floor portion connected to an inner shaft for rotation therewith and a second ring-shaped floor portion connected to an outer shaft for rotation therewith. The annular floor portions cooperate with an engine casing to define an annular chamber. A first pair of diametrically aligned pistons are positioned within the annular chamber and are connected to the first ring-shaped floor portion while a second pair of diametrically aligned pistons are positioned within the angular chamber and connected to the second ring-shaped floor portion. The pistons cooperate to define a plurality of combustion chambers. Means are provided for causing combustion in the combustion chambers for imparting rotary motion to the inner and outer shafts.

Abstract: An arrangement which seals three movable bodies with respect to one another, for example in a component used in a motor vehicle, is provided with first sealing bodies which are imbedded in a first rotating body. Sealingly secured in these first sealing bodies are sealing members which follow the circumference of the first rotating body as well as a respective sealing member extending in the axial direction of the rotating body. The sealing members are in sliding sealing engagement with sealing surfaces of angular sealing strips, such sealing surfaces extending normal to the direction of the sealing members which follow the circumference of the rotating body. The angular sealing strips are secured at the opposing ends of a reciprocable second body which radially traverses the rotating body. Preferably, these angular sealing strips are interconnected with the aid of a respective further sealing body positioned on the axial end surfaces of the second body.

Abstract: A rotary piston type fluid machine comprises one or more rotary piston type fluid machine units, each comprising a doughnut type ring-shaped cylinder with an annular slit being provided in the wall at the inward periphery lying in a plane containing the annular central line of the cylinder, a rotor rotatively supported by the cylinder with the peripheral portion being shiftably received within the slit, one or more rotary pistons secured to the peripheral surface of the rotor and adapted to be shifted within the cylinder, and one or more gate valves mounted to the cylinder so as to cross the cylinder and adapted to periodically protrude into the cylinder in synchronization with the movement of the rotary pistons. The rotary piston type fluid machine unit can be utilized as a compressor, an internal combustion engine, a pump, etc. by using it singly, or as a number of the units in combination.

Abstract: The rotary piston engine has a rotatable annular cylinder and rotatable piston elements interconnected through a cross-linkage mechanism eccentrically arranged relative to the longitudinal axis of the annular cylinder for causing relative oscillatory motion between the piston elements and the annular cylinder. The cross-linkage mechanism has cross arms coupled through a cross connecting arm to the eccentric shaft such that the cross arms do not cross over in each revolution of the annular cylinder.

Abstract: A rotary piston machine has a cylindrical housing with inlet and outlet ports. A rotor mounted in the housing has an elongated diametric recess. A circular piston eccentrically mounted in the recess effectively reciprocates therein as the rotors turn.

Abstract: A rotary energy converter has a rotor provided with a plurality of hinged vanes and centrally mounted within a stator having a generally circular inner wall surface formed with one or more vaulted bays and corresponding abutments. As the rotor rotates within the stator, the hinged vanes are urged outwardly by centrifugal force into wiping contact with the stator inner wall, and are alternately extended and retracted, as the vanes encounter the vaulted bays and abutments to provide a respiring chamber between each pair of adjacent vanes. In one preferred form, the energy converter is shown as a rotary internal combustion engine having at least two vaulted bays, one of which constitutes a fuel inlet and compression bay, and the other of which constitutes a combustion expansion bay with an ignition station located between said bays.

Abstract: An engine comprises at least one cylinder and preferably several cylinders side-by-side. Each cylinder comprises a toroidal cylinder and has a piston which revolves around the cylinder. The piston is fixed to the periphery of a disk fixed to the main shaft which coincides with the axis of the cylinder. At one position of the cylinder a gate is installed which seals the cylinder into two sections. On one side of the gate is an inlet port and on the opposite side an exhaust port. A valve controlled by a cam shaft timed from the main shaft controls the inlet port. A gaseous medium is externally heated in a heater and is introduced under pressure through the inlet port and drives the piston around the cylinder; the medium in the cylinder ahead of the piston from the previous cycle is discharged through the exhaust port and cooled and then reheated. The valve is manually (or pedally) controlled to cut off to maintain proper speed for the load on the main shaft.

Abstract: The sealing grid system for a rotary piston mechanism of the Wankel type comprises apex seal assemblies and a plurality of seal strips slidably disposed in recesses in at least one face of the rotary piston. Each of the recesses are formed at the juncture of the peripheral surface of the rotary piston and the surface of one of the rotary piston faces and extend to communicate with next adjacent apex seal slots. A groove is formed in the bottom of each of the recesses to receive a biasing member, V-shaped in cross-section, which functions to both urge the associated seal strip outwardly of the recess and to seal the interstices between the seal strip and its recess. Each of the seal strips is dimensioned in length to abut the next adjacent apex seal blades.

Abstract: Rotary internal combustion engine of axial sliding vane type has sinusoidal shaped side walls with compensation of the mass forces allowing nearly friction-free and high speed operation with sufficient compression ratio. High power output is believed to make the invention comparable to the well-known Wankel engine.The various designs of the rotary machines can also be used as fluid pumps or fluid-operated motors.

Abstract: A rotary combustion engine having a planetary rotor and a side intake port is provided with an internal exhaust gas recirculation system that is operable to connect the trailing region of the working chambers and the space below the trailing apex seal to the annular space between the side seals and oil seals on one rotor side only when the chambers near the end of the exhaust phase whereby the differential between the pressure of the exhaust gases and the vacuum of the inlet mixture causes the exhaust gases rich in unburned hydrocarbon that are in the trailing regions of the chamber during the exhaust phase to flow through the annular space to the intake port and thereafter be recirculated through the compression and expansion phase.

Abstract: A mechanical system for a rotary machine, which has a rotor and sets of abutments arranged around the rotor. The abutments are arranged to couple mechanically with the rotor and with separate consecutive variable volume channels or chambers of different pressures dividing a peripheral groove in the rotor by blades.