Positively Urged To Engage Cylinder Patents (Class 418/148)
  • Patent number: 8961161
    Abstract: Provided is a fluid machine which can be produced to have an increased weld strength and an increased reliability, at a reduced production cost. A first and a second shells (78, 80), each having a rim and a sealing portion constituting part of the rim, are butted together with the rims (78a, 80a) held together to form a groove (82) and with the sealing portions (96, 98) in contact with each other, and joined together by a weld (84) formed in the groove over the entire length of the groove to be separated from the sealing portions by a space (100).
    Type: Grant
    Filed: January 24, 2011
    Date of Patent: February 24, 2015
    Assignee: Sanden Corporation
    Inventors: Noriyuki Kobayashi, Hitomi Ito
  • Patent number: 8955491
    Abstract: A rotary machine is described with a vane carried by a rotor in a housing. The vane includes: a central vane axis extending radially outward along a y-axis from a center of the rotor through the vane to the housing. A centrifugal force of the vane against the housing is primarily distributed with a first sealing element mounted on an end of the vane, such as a rotatable element supported by a rigid support. The rigid structure of the first sealing element facilitates use of a second flexible sealing element mounted on the vane end. The second flexible sealing element performs as a sliding seal between a trailing expansion chamber and a leading expansion chamber on opposite sides of the vane. The rigid seal and the flexible sliding seal typically function independently of each other as separate constituents of the tip or end of a given vane.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: February 17, 2015
    Inventor: Merton W. Pekrul
  • Patent number: 8807974
    Abstract: A split discharge vane pump is disclosed having a pump body that includes an interior pumping chamber having a central axis and defining a continuous peripheral cam surface, the cam surface including four quadrantal cam segments, wherein diametrically opposed cam segments have identical cam profiles, and each cam segment defines an inlet arc, a discharge arc and two seal arcs. A rotor is mounted for axial rotation within the pumping chamber and a plurality of circumferentially spaced apart radially extending vanes are mounted for radial movement within the rotor, wherein the plurality of vanes define an equal number of circumferentially spaced apart buckets which extend between the rotor and the cam surface of the pumping chamber for carrying pressurized fluid.
    Type: Grant
    Filed: September 4, 2012
    Date of Patent: August 19, 2014
    Assignee: Triumph Engine Control Systems, LLC
    Inventors: Paul J. Paluszewski, Mihir C. Desai, Xingen Dong
  • Patent number: 8517705
    Abstract: A rotor engine is provided for operation with a fuel expanding during a power stroke. To aid power stroke efficiency, the rotary engine contains a vane, where a tip of the vane includes one or more of: a rolling element configured to move with the vane, a bearing for bearing the force of the vane applied to the inner housing, a seal for providing a seal between a leading chamber and an expansion chamber, a pressure relief cut for reducing pressure build-up between vane wings and an inner wall of the rotor engine housing; and/or a booster enhancing pressure equalization above and below a vane wing. The vane reduces vibration of the vane-tips against the inner wall of the housing of the rotary engine during operation of the engine.
    Type: Grant
    Filed: March 5, 2011
    Date of Patent: August 27, 2013
    Inventor: Merton W. Pekrul
  • Patent number: 8388322
    Abstract: A fuel pump for deployment in a fuel system for an internal combustion engine comprises a 3-phase brushless direct current motor, a sling vane impeller with blade-shaped sling vanes, sensorless electronic motor drive and an electronic controller. The controller is adapted to receive analog or pulse-width modulation inputs to control pump speed.
    Type: Grant
    Filed: August 6, 2008
    Date of Patent: March 5, 2013
    Assignee: Fluid Control Products, Inc.
    Inventor: Robert E. Scharfenberg
  • Patent number: 8360760
    Abstract: A rotary apparatus is described having: a vane; a rotor comprising a center, the rotor configured to carry the vane; and a housing, the rotor operatively mounted within the housing. The vane includes: a central vane axis extending longitudinally through the vane along a y-axis, the y-axis comprising a line from the center of the rotor to the housing, and a vane end intersecting the y-axis, the vane end proximate an inner surface of said housing. The vane end of the vane further includes a vane extension protruded radially outward from about the vane end along an x-axis about perpendicular to the y-axis, the vane extension comprising at least one aperture therethrough. During operation of the rotary apparatus, fuel flows through the aperture reducing pressure between a portion of the vane extension and the housing, which facilitates vane sealing to the housing and improves efficiency by reducing engine chatter.
    Type: Grant
    Filed: March 21, 2011
    Date of Patent: January 29, 2013
    Inventor: Merton W. Pekrul
  • Patent number: 8277208
    Abstract: A split discharge vane pump is disclosed having a pump body that includes an interior pumping chamber having a central axis and defining a continuous peripheral cam surface, the cam surface including four quadrantal cam segments, wherein diametrically opposed cam segments have identical cam profiles, and each cam segment defines an inlet arc, a discharge arc and two seal arcs. A rotor is mounted for axial rotation within the pumping chamber and a plurality of circumferentially spaced apart radially extending vanes are mounted for radial movement within the rotor, wherein the plurality of vanes define an equal number of circumferentially spaced apart buckets which extend between the rotor and the cam surface of the pumping chamber for carrying pressurized fluid.
    Type: Grant
    Filed: June 11, 2009
    Date of Patent: October 2, 2012
    Assignee: Goodrich Pump & Engine Control Systems, Inc.
    Inventors: Paul J. Paluszewski, Mihir C. Desai, Xingen Dong
  • Patent number: 8011909
    Abstract: A vane pump assembly including a cam ring having an elliptical inner bore defining a hydraulic pumping chamber, the pumping chamber having an interior camming surface. The cam ring defines ports for admitting fluid into the pumping chamber. A rotor, within the cam ring, defines a plurality of radial vane slots. A vane assembly is supported in each vane slot to define vane buckets. Each vane assembly has an end dynamic vane seal for reducing leakage between the buckets. Front and rear side plates, separated by an annular spacer, enclose the pumping chamber. The pump assembly may also include floating front and rear rotor seals for reducing radially inward leakage. Each rotor seal is disposed within a groove formed in the rotor, wherein discharge pressure urges the rotor seals axially outward from the pumping chamber to create an effective seal against the respective side plate.
    Type: Grant
    Filed: March 20, 2008
    Date of Patent: September 6, 2011
    Inventor: Xingen Dong
  • Publication number: 20110176947
    Abstract: The invention comprises a rotary engine method and apparatus configured with a cap seal. A cap seal restricts fuel flow from a fuel compartment to a non-fuel compartment and/or fuel flow between fuel chambers, such as between a reference expansion chamber and any of an engine: rotor, vane, housing, and/or a leading or trailing expansion chamber. Means for providing cap sealing force to seal the cap against a rotary engine housing element comprise one or more of: a spring force, a magnetic force, a deformable seal force, and a fuel force. The dynamic caps ability to track a noncircular path are particularly beneficial for use in a rotary engine having an offset rotor and with a non-circular inner rotary engine compartment having engine wall cut-outs and/or build-ups. The dynamic sealing forces further provide cap sealing forces over a range of temperatures, pressures, fuel flow rates, and operating engine rotation rates.
    Type: Application
    Filed: April 2, 2011
    Publication date: July 21, 2011
    Applicant: Fibonacci International, Inc.
    Inventor: Merton W. Pekrul
  • Patent number: 7980837
    Abstract: A rotary piston machine has a cylinder provided with two ends to form a stator with inlet and outlet apertures, and a piston having a rotor eccentrically mounted within the stator. A vane is connected to the rotor by a hinge and forms an expanding and contracting chamber as the piston rotates. The piston is provided with a sealing means sufficient to restrict movement of gaseous/fluid matter between chambers during operation. The sealing means includes a flexible seal member with a mating lip positioned adjacent to the vane hinge. Each revolution of the eccentrically mounted piston causes the seal member to contact an inner cylinder wall to prevent the escape of displaced gaseous/fluid matter past the vane hinge. The flexible seal member contacts the cylinder wall and bends to form a lip seal resistive to the direction of pressurization.
    Type: Grant
    Filed: September 11, 2006
    Date of Patent: July 19, 2011
    Assignee: Phoenix Product Development, Limited
    Inventor: Garry Moore
  • Patent number: 7866962
    Abstract: A two-stage rotary compressor having a compression mechanism including a single muffler housing member. The single muffler housing member at least partially defines an intermediate pressure discharge cavity and a discharge pressure discharge cavity. In one exemplary embodiment, the compression mechanism includes a cylinder block having a plurality of vanes positioned within slots formed in an inner cylindrical surface of the cylinder block. The slots are in fluid communication with the discharge pressure discharge cavity and receive discharge pressure working fluid to bias the vanes radially inwardly. In another exemplary embodiment, the cylinder block includes a plurality of passages for the delivery of working fluid to and from the cylinder block.
    Type: Grant
    Filed: July 30, 2007
    Date of Patent: January 11, 2011
    Assignee: Tecumseh Products Company
    Inventor: Joseph A. Newland
  • Patent number: 7425121
    Abstract: A pump assembly (100) having a pump housing (206 and 208) and a rotor (222) rotatingly disposed within the housing, the rotor having a plurality of slots (226). The pump assembly includes a plurality of vanes (224), each vane moveably disposed in one of the plurality of slots, and an input shaft (228) coupled to the rotor for applying a torque to the rotor. The pump assembly (100) also includes a prime mover (400) for generating a torque and a magnetic coupling unit (300) for magnetically transferring the torque generated by the prime mover to the input shaft. The vanes may have a leg (256) which extends radially inward from a blade (254). The rotor and input shaft may be integrally formed.
    Type: Grant
    Filed: March 23, 2005
    Date of Patent: September 16, 2008
    Inventors: Gregory P. Wood, Phillip V. Cortez, Michael A. Citro
  • Patent number: 7393192
    Abstract: A rotary vane pump (200) for pumping a fluid. The rotary vane pump includes a pump housing (206 and 208) and a rotor having a plurality of dividing members (232) and a plurality of slots (226) disposed between adjacent dividing members. The rotary vane pump also includes a plurality of strengthening members (240), each strengthening member disposed in one of the plurality of slots and coupled to adjacent dividing members. The rotary vane pump also includes a plurality of vanes (224), each vane moveably disposed in one of the plurality of slots.
    Type: Grant
    Filed: March 23, 2005
    Date of Patent: July 1, 2008
    Inventors: Gregory P Wood, Phillip V Cortez, Michael A Citro
  • Patent number: 7300267
    Abstract: A roller cell pump having a shaped sliding surface composed of elliptical portions results from two different equations. The function of the unit is improved because the equations are modified and include adaptable parameters, so that by adaptation of the parameters, the shaped sliding surface can be adapted in portions optimally to the requisite function in that particular region of the shaped sliding surface, for instance the function of generating an underpressure or an overpressure. The course of the radii of the elliptical portions corresponds, at least in portions, to one of two equations that differ from the prior art.
    Type: Grant
    Filed: June 17, 2004
    Date of Patent: November 27, 2007
    Assignee: Robert Bosch GmbH
    Inventors: Fevzi Yildirim, Mehmet Gueluem
  • Patent number: 7171941
    Abstract: A positive displacement rotary device and method of use are provided. The rotary device includes coupled chamber halves with a drive disc having at least one drive plate rotatably engaged with the drive disc. The drive disc is mounted on a drive shaft and positioned between the coupled chamber halves. The drive plates include at least two drive lobes with the drive plates rotating about an axis of rotation 90° and tangent to the drive shaft axis of rotation while the drive disc sweeps the drive plates around the drive shaft. The chamber halves include camming chambers that are shaped to follow the path of the drive lobes on the drive plates as they are swept around the drive shaft. The rotary device can be used as a motor, a pump, or even an internal combustion engine.
    Type: Grant
    Filed: January 31, 2005
    Date of Patent: February 6, 2007
    Inventor: Steve Johnson
  • Patent number: 7059843
    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.
    Type: Grant
    Filed: July 14, 2004
    Date of Patent: June 13, 2006
    Assignee: Advanced Technologies, Inc.
    Inventor: Patrick Badgley
  • Patent number: 6604924
    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.
    Type: Grant
    Filed: March 14, 2001
    Date of Patent: August 12, 2003
    Assignees: Joma-Hydromechanic GmbH, Bayerische Motorenwerke Aktiengesellschaft
    Inventors: Willi Schneider, Peter Jeschonnek, Reiner Schmid
  • Patent number: 6536403
    Abstract: A direct-drive rotary engine having a rotor housing, the rotor housing having an interior wall structure which defines an open interior of the engine compartment, including an air intake region, a compression region, a combustion region, an expansion region and an exhaust region therein, in which is rotatably disposed a cylindrical rotor assembly coaxially fixed to an engine shaft. The rotor receives a plurality of slidable and retractable sliding walls in a radial arrangement, respectively at positions substantially equal spaced on circumference of said rotor. The sliding walls include a pair of compression rods which are pressures biased to the surrounding inner wall structure of the rotor housing during the rotation of the rotor.
    Type: Grant
    Filed: September 27, 2001
    Date of Patent: March 25, 2003
    Inventor: Magdi M Elsherbini
  • Publication number: 20020136656
    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.
    Type: Application
    Filed: March 14, 2001
    Publication date: September 26, 2002
    Applicant: Joma-Hydromechanic GmbH
    Inventor: Willi Schneider
  • Patent number: 6237560
    Abstract: A rotary engine is disclosed having a rotor and rotor housing for mounting therewithin said rotor for rotation within an inner wall of the rotor housing, a gap between the rotor and the inner wall of the rotor housing defining an engine compartment. A plurality of telescopic sealing blades which can elongate and shorten with respect to the rotor are attached, respectively at positions substantially equally spaced on the circumference of said rotor so that the sealing blades elastically contact to the inner wall of the rotor housing, the sealing blades sliding along the inner wall of the rotor housing during the rotation of the rotor and separating the engine room in an airtight manner so that the suction of fuel gas, its succeeding compression and the exhaust of burnt gas are carried out. The engine has a compression chamber and an expansion chamber, defined by two adjacent sealing blades, respectively.
    Type: Grant
    Filed: July 29, 1998
    Date of Patent: May 29, 2001
    Assignee: Saitoh & Co., Ltd.
    Inventor: Hiroshi Saito
  • Patent number: 6189502
    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.
    Type: Grant
    Filed: March 29, 1999
    Date of Patent: February 20, 2001
    Inventor: Jui H. Lai
  • Patent number: 5551853
    Abstract: An axial vane rotary device (14) includes a stator (16) with a cylindrical internal chamber (34) defined an annular outer wall (40) and two side walls (36, 38) of the stator. Each side wall has an annular cam surface (42, 44). A rotor (54) is rotatably mounted within the chamber. The rotor has an annular outer wall (66) and a plurality of angularly spaced-apart, axially extending slots (64) extending therethrough. A vane (68) is slidably received in each slot. The vanes reciprocate axially and alternatively expand and compress spaces between adjacent vanes and the cam surfaces as the rotor rotates. The cam surfaces have alternating first portions (92) and second portions (90). The second portions are further from the rotor than the second portions. The first portions of one said cam surface are aligned with second portions of another said cam surface. The slots extend radially outwards on the rotor to the annular outer wall thereof.
    Type: Grant
    Filed: May 26, 1995
    Date of Patent: September 3, 1996
    Assignee: Regi U.S., Inc.
    Inventors: Brian W. Cherry, James E. Smith, Victor E. Mucino, Nigel N. Clark, Gregory Thompson, Patrick R. Badgley
  • Patent number: 5429084
    Abstract: An axial vane rotary device (14) includes a stator (16)with a cylindrical internal chamber (34) defined an annular outer wall (40) and two side walls (36, 38) of the stator. Each side wall has an annular cam surface (42, 44). A rotor (54) is rotatably mounted within the chamber. The rotor has an annular outer wall (66) and a plurality of angularly spaced-apart, axially extending slots (64) extending therethrough. A vane (68) is slidably received in each slot. The vanes reciprocate axially and alternatively expand and compress spaces between adjacent vanes and the cam surfaces as the rotor rotates. The cam surfaces have alternating first portions (92) and second portions (90). The second portions are further from the rotor than the second portions. The first portions of one said cam surface are aligned with second portions of another said cam surface. The slots extend radially outwards on the rotor to the annular outer wall thereof.
    Type: Grant
    Filed: February 25, 1994
    Date of Patent: July 4, 1995
    Assignee: Sky Technologies, Inc.
    Inventors: Brian W. Cherry, James E. Smith, Victor E. Mucino, Nigel N. Clark, Gregory Thompson, Patrick R. Badgley
  • Patent number: 5224850
    Abstract: A rotary engine comprises a rotor 14 rotating within an oval chamber 10 for rotation about an axis fixed with respect to the chamber. The rotor 14 has radial slots 19 receiving respective vanes 18 which are urged radially outwardly to make sealing engagement with the oval peripheral wall of the chamber 10. To ensure good sealing of the ends of each vane with respect to the end walls of the chamber 10, each vane 18 is of multi-part construction comprising end parts 50 for cooperation with the chamber end walls and an intermediate part 52. In one embodiment the intermediate part 52 and end parts 50 have cooperating inclined ramp faces such that an outwardly directed force applied to the part 52 by centrifugal force or by a biassing spring will cause the end parts 50 to be thrust laterally, by a wedging action, into sealing contact with the adjoining end walls.
    Type: Grant
    Filed: September 26, 1991
    Date of Patent: July 6, 1993
    Inventor: Koh S. Pie
  • Patent number: 5144802
    Abstract: Apparatus for performing a plurality of functions including fluid pump, fluid motor, fluid transmission, air compressor and steam engine employ a circular rotor chamber with a rotor operable therein. The rotor is connected to a drive shaft, both of which are offset from the center of the chamber. The rotor employs at least one pair of opposed vanes which are slidable in relation to the center of the rotor and move with the rotor in contact with the circumferential chamber wall. Valves, vanes and related elements are arranged to effect the intended function.
    Type: Grant
    Filed: June 29, 1990
    Date of Patent: September 8, 1992
    Inventor: Ivan Ruzic
  • Patent number: 5092752
    Abstract: A seal assembly slidably mounted in a slot in the piston engages the cylindrical internal wall of the housing to form separate chambers. The housing has arcuate slots non-concentric with its cylindrical internal wall accommodating rollers connected to the seal assembly to maintain the seal assembly in constant and substantially uniform sealing engagement with the internal wall of the housing.
    Type: Grant
    Filed: April 27, 1990
    Date of Patent: March 3, 1992
    Assignee: Hansen Engine Corporation
    Inventor: Craig N. Hansen
  • Patent number: 4925378
    Abstract: A rotary vane compressor comprising a cylinder, a rotor rotatably mounted within the cylinder and cooperating with an inner peripheral surface of the cylinder to define a compression chamber therebetween, two side plates for closing both ends of the cylinder, at least one vane slidably mounted to the rotor for movement radially toward and away from the rotor through an outer peripheral surface thereof and dividing the compression chamber into a plurality of spaces, and a chip seal provided on a forward end of the vane for slidably engaging with the inner peripheral surface of the cylinder. The sealing efficiency of the chip seal is increased by introducing the pressure in a central portion of the rotor into the forward end of the vane.
    Type: Grant
    Filed: November 16, 1988
    Date of Patent: May 15, 1990
    Assignee: Hitachi, Ltd.
    Inventors: Kenichi Ushiku, Akira Tezuka
  • Patent number: 4792295
    Abstract: The invention comprises a variable volume rotary vane pump or motor having an improved sealing relationship between vanes radially extending from a rotor and the inner cylindrical surface of an outer sleeve. The improved sealing is performed by means of vane caps (seals) which are urged radially outward against the inner circumferential wall of the outer cylinder by fluid pressure.
    Type: Grant
    Filed: March 5, 1987
    Date of Patent: December 20, 1988
    Inventor: Benjamin N. Joyce, Sr.
  • Patent number: 4692104
    Abstract: An air pump and compressor having a housing with a cylindrical internal chamber. A plurality of pairs of intake and exhaust valves mounted on the housing control the flow of air into and out of the chamber. A piston located within the chamber is mounted on a shaft rotated on the housing. The shaft has a primary eccentric that supports the piston in the chamber. A pair of secondary eccentrics spaced from the primary eccentric are mounted on the piston and housing to control the orbital movement of the piston. Seal assemblies slidably mounted in slots in the piston engage the inner cylindrical wall of the housing to form separate pumping chambers. Each pumping chamber is in communication with an intake valve and an exhaust valve so that on orbital movement of the piston the air flows into and is pumped out of each pumping chamber.
    Type: Grant
    Filed: February 18, 1986
    Date of Patent: September 8, 1987
    Assignee: Hansen Engine Corporation
    Inventor: Craig N. Hansen
  • Patent number: 4618318
    Abstract: A rotary device has a housing with an elliptical inside surface surrounding an elliptical rotor. Vane and seal assemblies on the rotor and housing are controlled with cam and linkages to provide positive effective gas seals between the housing and rotor. A slack adjuster maintains lateral sealing relationships between the housing vane and seal assemblies and opposite side walls of the housing.
    Type: Grant
    Filed: March 25, 1985
    Date of Patent: October 21, 1986
    Assignee: Hansen Engine Corporation
    Inventor: Craig N. Hansen
  • Patent number: 4548560
    Abstract: A seal system in a rotary engine includes apex seals held against an inner peripheral wall surface of a rotor housing, seal rings disposed between the apex seals and a side wall surface of the rotor housing, seal rings disposed between sliding plates mounted on a rotor and the side housing member, a split seal ring disposed between the side housing member and the rotor, and an air seal unit for supplying a flow of compressed air across a clearance between the rotor and the rotor housing to prevent gas leakage between compression and combustion stroke chambers.
    Type: Grant
    Filed: July 19, 1983
    Date of Patent: October 22, 1985
    Inventor: Mitsuhiro Kanao
  • Patent number: 4521168
    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.
    Type: Grant
    Filed: August 30, 1982
    Date of Patent: June 4, 1985
    Assignee: RMC Rotary Motor Company AG
    Inventor: Peter B. Kathmann
  • Patent number: 4221553
    Abstract: An orbital pump comprises a pump housing having first and second end walls and an intermediate annular, inwardly projecting wide wall member. First and second axial drive shaft portions are installed through corresponding housing end walls. A rotor, excentrically rotatably mounted to inner ends of the drive shaft portions, is installed in the housing with first and second rotor end flanges adjacent to the corresponding sides of the annular wall member so that the pump end walls, annular wall member and rotor end flanges divide the housing into an inlet plenum, a generally square compression chamber and an outlet plenum. A pair of orthogonally intersecting vanes mounted through the rotor divide the compression chamber into four pumping sub-chambers, ends of each vane being orthogonal to opposite sides of the compression chamber, and in tangential sliding contact therewith.
    Type: Grant
    Filed: May 10, 1978
    Date of Patent: September 9, 1980
    Inventor: Edward J. Miles
  • Patent number: 4155685
    Abstract: Gas seal characterized in that a groove is formed on a rotor or on a sealing piece slidably embedded in the rotor. An apex seal, outwardly urged in the radial direction, is slidably inserted in the groove and both ends of the apex seal are so supported by a corner seal block that the apex seal does not slip out of the rotor. At the same time the seal block assures air-tightness of the rotor ends, thereby effectively sealing the rotor against the housing.
    Type: Grant
    Filed: July 14, 1977
    Date of Patent: May 22, 1979
    Inventors: Eiichi Kunieda, Yoshiko Kunieda
  • Patent number: 4097205
    Abstract: An orbital pump or the like comprises a housing having first and second end walls and intermediate, axially spaced first and second annular, inwardly projecting wall members. First and second axial drive shaft portions are installed through the housing first and second end walls respectively. A spool shaped engine rotor having radially outwardly projecting end flanges is installed in the housing with the first and second end flanges closely adjacent to axially outer surfaces of the first and second annular wall members. The rotor is eccentrically rotatably mounted to inner ends of the drive shaft portions. The two annular wall members and rotor ends divide the housing interior into an inlet plenum at the housing first end, a central chamber and an outlet plenum at the housing second end. A pair of intersecting rotor vanes, mounted diametrically through major portions of the rotor and in mutual orthogonal relationship, circumferentially divide the central chamber into four working chambers.
    Type: Grant
    Filed: January 18, 1977
    Date of Patent: June 27, 1978
    Inventor: Edward L. Miles
  • Patent number: 4086039
    Abstract: A rotary machine operable as a pump, compressor, motor or internal combustion engine, the machine having a rotor orbiting but not rotating within a chamber in a housing, vanes separating the space within the chamber into working chambers. The rotor is eccentrically mounted on a rotatable shaft, the rotor being guided by lobes on the rotor operating in shaped recesses in the housing. The vanes are vane assemblies biassed outwardly into contact with the chamber wall, and include a plurality of vane blades to give a labyrinth seal effect.
    Type: Grant
    Filed: October 29, 1976
    Date of Patent: April 25, 1978
    Inventor: John P. Ettridge
  • Patent number: 4020917
    Abstract: A vehicle has a primary drive pump in communication with driven pumps associated with each wheel for driving the vehicle as hydraulic fluid is ported to the wheel pumps through a by-pass valve. The pumps are similarly designed with each including a rotor co-axially mounted within a fixed stator defining an annular pump chamber when fluid entering an intake opening moves against gradually extending vanes provided on the rotor. The fluid exits through a discharge opening in the stator, and the vanes are designed to be fully retracted at a position between the openings and gradually extended so as to fully extend after moving beyond the intake opening. Also, the vanes gradually retract as they approach the discharge opening.
    Type: Grant
    Filed: November 7, 1975
    Date of Patent: May 3, 1977
    Inventor: Sigmund P. Lutterschmidt
  • Patent number: 4004556
    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.
    Type: Grant
    Filed: February 16, 1973
    Date of Patent: January 25, 1977
    Inventor: Rolf Alfons Pfeiffer
  • Patent number: 3985479
    Abstract: A rotary piston pump comprises vanes mounted on shafts extending radially from a hub and travelling around an annular channel having a forwarding or pumping portion of circular cross section and a restricted sealing portion corresponding in cross section to the diametrical cross section of the vanes. Control means is provided for turning the vanes about radial axes so as to position the vanes approximately perpendicular to their direction of movement while passing through the forwarding portion of the channel and to turn them approximately 90.degree. so as to pass through the sealing portion of the channel in an edgewise position. At the ends of the forwarding portion the channel is connected respectively with inlet and outlet passageways. The control means include springs which permit the vanes to rotate in order to give way in the event that foreign bodies penetrate and have eccentrics and cam tracks, with cam rollers or cams if necessary.
    Type: Grant
    Filed: December 2, 1974
    Date of Patent: October 12, 1976
    Inventor: Manfred Sommer