Supply Or Exhaust Passage Through Working Member Center Of Rotation Patents (Class 418/188)
  • Patent number: 10294936
    Abstract: A fluid delivery system having at least one fluid storage device and a pump with at least one fluid driver with a flow-through shaft that has a through-passage. The pump includes a casing, and at least one fluid driver having a prime mover and at least one fluid displacement member. A shaft of the prime mover and/or a shaft of the fluid displacement member and/or a common shaft of the prime mover/fluid displacement member (depending on the configuration of the pump) is a flow-through shaft with a through-passage configuration that allows fluid communication between at least one port of the pump and the at least one fluid storage device.
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: May 21, 2019
    Assignee: PROJECT PHOENIX, LLC.
    Inventor: Thomas Afshari
  • Patent number: 10280922
    Abstract: A compressor may include a first compression member, a second compression member, and a motor assembly. The second compression member is movable relative to the first compression member and cooperates with the first compression member to define a compression pocket therebetween. The motor assembly drives one of the first and second compression members relative to the other one of the first and second compression members. The motor assembly includes a stator and a rotor. The rotor is rotatable relative to the stator about a rotational axis. The stator surrounds the rotational axis. The rotor may include magnets that are arranged around the rotational axis. The magnets may be spaced apart from the stator in an axial direction that is parallel to the first rotational axis.
    Type: Grant
    Filed: February 6, 2017
    Date of Patent: May 7, 2019
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Roy J. Doepker, Robert C. Stover
  • Patent number: 10253773
    Abstract: An attachment structure is for attaching a compressor to an attachment surface of an attachment target member. The compressor is a scroll type compressor and has a housing, a fixed scroll and a movable scroll. The housing is fixed to the attachment surface. The fixed scroll is fixed inside the housing and has a fixed-side tooth having a scroll shape. The movable scroll has a movable-side tooth having a scroll shape and engaging with the fixed-side tooth. The movable scroll revolves with respect to the fixed scroll. A central axis around which the movable scroll revolves is parallel with the attachment surface. A vibration direction, which is included in a radial direction of the compressor and in which a vibration component becomes largest, is different from a normal direction when viewed in an axial direction of the central axis.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: April 9, 2019
    Assignee: DENSO CORPORATION
    Inventors: Masashi Higashiyama, Masami Sanuki, Tsuyoshi Takemoto, Shigeru Kawano
  • Patent number: 9982922
    Abstract: A motor unit, which drives a compressor unit, includes a stator, which generates a rotating magnetic field, and a rotor, which is rotated about a rotational axis by the rotating magnetic field at an inner side of the stator. A drive circuit unit is placed at the inner side of the stator such that a position of the drive circuit unit in a direction of the rotational axis overlaps with the stator.
    Type: Grant
    Filed: December 5, 2013
    Date of Patent: May 29, 2018
    Assignee: DENSO CORPORATION
    Inventors: Koji Sakai, Hiroki Ishii
  • Patent number: 9004890
    Abstract: The invention relates to a gear wheel pump with two meshing gear wheels which are rotatably mounted within a pump housing by means of a driven driveshaft and a crankshaft journal and which form a pumping channel system between a pump inlet and a pump outlet. Several gaps are formed between the pump housing, the gear wheels, the driveshaft, and the crankshaft journal. One of the gaps between the driveshaft and one of the gear wheels contains means for the rotationally fixed connection of the driveshaft to the gear wheel. In order to prevent leakages penetrating to the connecting means, according to the invention the gap between the driveshaft and the gear wheel is sealed, with respect to the front faces of the gear wheel, by means of a sealant.
    Type: Grant
    Filed: March 11, 2008
    Date of Patent: April 14, 2015
    Assignees: Oerlikon Textile GmbH & Co. KG, Durr Systems GmbH
    Inventors: Arkadiusz Tomzik, Ulrich Helbing, Dietrich Witzler, Michael Baumann, Frank Herre, Martin Stiegler, Herbert Martin, Thomas Appel
  • Patent number: 8794945
    Abstract: Rotary components are described that include a housing comprising a rotor having a rotor working face and a gate having a gate working face and a pocket; at least one vane, wherein the vane is coupled to the rotor; at least one wiper coupled to the vane; a plurality of endplates coupled to the housing, wherein at least one of the endplates is a float plate; an intake chamber; and an outlet chamber. In addition, methods of aspirating a working medium by utilizing the rotary component having at least one float plate includes pulling the working medium into the intake chamber, depositing the working medium into a working chamber that is located between the intake chamber and the outlet chamber; maintaining the working medium in a stationary position until the vane sweeps around toward the outlet chamber; accumulating the working medium into the outlet channel of the outlet chamber; and centrifugally ejecting the working medium into the outlet chamber and out of the system.
    Type: Grant
    Filed: April 10, 2009
    Date of Patent: August 5, 2014
    Inventors: Fritz Forgy, John Novak, Jr.
  • Patent number: 8753100
    Abstract: A fluid transfer engine employs a case with a cylindrical inner wall having an operating radius extending from a case axis. A main rotor is carried within the case and incorporates a lobe with a major radius equal to and concentric with the operating radius of the case, the main rotor having a minor radius defining a body. Two peripheral rotors are diametrically opposed with respect to the case axis and rotate within rotor chambers extending from the case. Each peripheral rotor has a radius equal to the minor radius and a center of rotation located at twice the minor radius from the case axis. Each of the peripheral rotors rotates in uniform circular motion with the main rotor in sealing contact with the body and incorporates a sculpted recess for receiving the lobe of the main rotor.
    Type: Grant
    Filed: June 12, 2012
    Date of Patent: June 17, 2014
    Assignee: Gyroton Corporation
    Inventors: William R. Peitzke, Matthew Brown, James G. P. Dehlsen, Christopher J. Grieco
  • Patent number: 8523546
    Abstract: A rotary engine has a cycloid rotor and a sealing grid including a face seal that rotates with the rotor, and including other seals that do not rotate with the rotor. As the rotor rotates within a housing, the rotor, housing and seal grid form at least one working chamber between them, the chamber undergoing a change from initial volume V1 to V2, which is less than V1, thus compressing a working medium, and subsequently expanding to volume V3, which may be larger than V1, such that the chamber volume is a smooth and continuous function of rotor's rotational angle.
    Type: Grant
    Filed: July 17, 2012
    Date of Patent: September 3, 2013
    Assignee: LiquidPiston, Inc.
    Inventors: Nikolay Shkolnik, Alexander C. Shkolnik
  • Patent number: 8459973
    Abstract: A vane pump 1 has a pump chamber 2A through an axial direction oil supply hole 11a, a diameter direction oil supply hole 11b, and an axial direction oil supply groove 11c of an oil supply passage 11. A gas passage 13 contains a gas groove 13a whose one end is made to communicate with an outer space, the gas groove 13a being formed on an outer peripheral surface of a shaft part 3B of a rotor 3, and the other end of this gas groove is made to intermittently overlappingly communicate with the axial direction oil supply groove 11c by a rotation of the rotor.
    Type: Grant
    Filed: November 17, 2010
    Date of Patent: June 11, 2013
    Assignee: Taiho Kogyo Co., Ltd.
    Inventors: Ryuichi Sakakibara, Kiyotaka Ohtahara, Kikuji Hayashida, Yoshimasa Kuno
  • Patent number: 8449277
    Abstract: A vane pump in which a lubricating oil from an oil supply pipe 12 is supplied to a pump chamber 2A through an axial direction oil supply hole 11a of an oil supply passage 11, a diameter direction oil supply hole 11b, and an axial direction oil supply groove 11c. A gas passage 13 includes a diameter direction gas hole 13a and an axial direction gas groove 13b, and the diameter direction gas hole 13a is made to communicate with the axial direction gas groove 13b when the diameter direction oil supply hole 11b is made to communicate with the axial direction oil supply groove 11c.
    Type: Grant
    Filed: November 17, 2010
    Date of Patent: May 28, 2013
    Assignee: Taiho Kogyo Co., Ltd.
    Inventors: Ryuichi Sakakibara, Kikuji Hayashida, Kiyotaka Ohtahara, Yoshimasa Kuno
  • Patent number: 8382462
    Abstract: An oil supply groove in communication with a pump room is formed above a bearing of a housing, and an open air groove in communication with atmospheric air is formed at a position rotated around the bearing by 90° from the oil supply groove. In a shank of a rotor, a branch passage branching from an oil passage formed in its axial direction to the diametrical direction of the shank and an open air passage formed in the direction perpendicular to the branch passage are formed. The branch passage and the oil supply groove communicate with each other while the open air passage and the open air groove are arranged to also communicate with each other.
    Type: Grant
    Filed: October 5, 2010
    Date of Patent: February 26, 2013
    Assignee: Taiho Kogyo Co., Ltd.
    Inventors: Yoshinobu Kishi, Kikuji Hayashida, Kiyotaka Ohtahara
  • Patent number: 8215935
    Abstract: A fluid transfer engine employs a case with a cylindrical inner wall having an operating radius extending from a case axis. A main rotor is carried within the case and incorporates a lobe with a major radius equal to and concentric with the operating radius of the case, the main rotor having a minor radius defining a body. Two peripheral rotors are diametrically opposed with respect to the case axis and rotate within rotor chambers extending from the case. Each peripheral rotor has a radius equal to the minor radius and a center of rotation located at twice the minor radius from the case axis. Each of the peripheral rotors rotates in uniform circular motion with the main rotor in sealing contact with the body and incorporates a sculpted recess for receiving the lobe of the main rotor.
    Type: Grant
    Filed: February 23, 2009
    Date of Patent: July 10, 2012
    Assignee: Gyroton Corporation
    Inventors: James G. P. Dehlsen, William R. Peitzke, Christopher J. Grieco, Matt Brown
  • Patent number: 8007260
    Abstract: A scroll fluid machine has a stationary scroll having a stationary scroll lap fixed to a scroll casing and an orbiting scroll having an orbiting scroll lap that orbits relative to the stationary scroll lap. The stationary and orbiting scrolls are connected via a coupling mechanism other than an Oldham coupling or pin crank type mechanism having sliding parts. The coupling mechanism includes plate springs that connect the stationary scroll to the orbiting scroll. The orbiting scroll lap engages with the stationary scroll lap to form a closed compression chamber.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: August 30, 2011
    Assignee: Anest Iwata Corporation
    Inventor: Ken Yanagisawa
  • Patent number: 7976294
    Abstract: A scroll fluid machine has a stationary scroll having a stationary scroll lap and an orbiting scroll having an orbiting scroll lap that orbits relative to the stationary scroll lap. The orbiting scroll lap engages with the stationary scroll lap to form a closed compression chamber. An intermediate ring is positioned to surround the orbiting scroll lap. A plurality of first plate springs connect the intermediate ring and the orbiting scroll, while supporting the intermediate ring to enable the intermediate ring to move in a first direction orthogonal to a rotation axis of the machine. A plurality of second plate springs connect the intermediate ring and the stationary scroll, while supporting the intermediate ring to enable the intermediate ring to move in a second direction orthogonal to the rotation axis of the machine as well as orthogonal to the first direction.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: July 12, 2011
    Assignee: Anest Iwata Corporation
    Inventor: Ken Yanagisawa
  • Patent number: 7793516
    Abstract: The problems of prior compressor structures relying upon conventional check valves are obviated by using, instead, flow control passages which operate to control flow while avoiding mechanical moving elements which may become problematical.
    Type: Grant
    Filed: September 29, 2006
    Date of Patent: September 14, 2010
    Assignee: Lenovo (Singapore) Pte. Ltd.
    Inventors: Timothy Samuel Farrow, Albert Vincent Makley
  • Patent number: 7748970
    Abstract: In an embodiment, a vacuum pump is capable of preventing adhesion of by-products to its surfaces. The vacuum pump includes a stator. The stator includes a cylinder wall and a pair of diaphragms disposed at opposite ends of the stator. A rotary shaft passes through the diaphragms, and a lobe is attached to the rotary shaft in the stator. The lobe may include a fluid port, and the fluid port may be disposed in sidewalls of the lobe to face the diaphragms. The rotary shaft may include a fluid supply path in communication with the fluid port.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: July 6, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Tea-Jin Park
  • Patent number: 7736139
    Abstract: A motor driven by pressure medium supplied from an external pressure source. The motor comprises a motor casing with a working chamber, a stator pail which forms an axial supply pipe for supply of pressure medium to the working chamber, a rotor part which is rotatably mounted on the stator part and eccentrically arranged in the working chamber, the rotor part and the stator being provided with inlet ports for supply of pressure medium to the working chamber, a hinge part mounted on the rotor part and provided with a pivotably mounted piston which divides the working chamber into a pressure chamber and a discharge chamber, and a constantly open discharge opening which is arranged in the wall of the motor easing from the discharge chamber through which the medium is discharged.
    Type: Grant
    Filed: July 28, 2005
    Date of Patent: June 15, 2010
    Inventor: Reidar Sørby
  • Patent number: 7713042
    Abstract: A rotary engine configured to use compressed air or high pressure steam to produce power. It has a casing with two peripheral exhaust ports each adjacent to a flattened area, a rotor having three slotted pistons, and a center valve with two opposed inlet ports that provide high pressure steam or compressed air to the pistons. Each rotor revolution produces three power strokes. Furthermore, the volume of air used for a single cycle is reduced, as a result of the air traveling through its pistons. Also, the engine stops when the vehicle it powers is at rest, and a spring inside each piston causes its angled tip to contact the rotary chamber upon start up. In addition, it is inexpensive to manufacture, as there is not much tooling needed to make the rotary engine, and it has only four moving parts, its rotor and the three pistons attached to it.
    Type: Grant
    Filed: November 7, 2009
    Date of Patent: May 11, 2010
    Inventor: John Rodgers
  • Patent number: 7341438
    Abstract: A fluid machine includes a stationary scroll member and a movable scroll member. A second tooth portion of the movable scroll member is arranged to be revolved with respect to a first tooth portion of the stationary scroll member and to form an operating chamber between the movable scroll member and the stationary scroll member. The operating chamber is changeable in accordance with a revolution of the movable scroll member to be defined between two sliding contact portions, and is dividable into first and second operating chambers. The second tooth portion is provided with a passage portion through which an introducing port for introducing a fluid to the operating chamber communicates with the second operating chamber when the introducing port communicates with the first operating chamber. The passage portion disconnects the introducing port from the second operating chamber when the introducing port is disconnected from the first operating chamber.
    Type: Grant
    Filed: March 6, 2006
    Date of Patent: March 11, 2008
    Assignees: DENSO CORPORATION, Nippon Soken, Inc.
    Inventors: Keiichi Uno, Yasuhiro Takeuchi, Hironori Asa, Hiroshi Ogawa
  • Patent number: 7338267
    Abstract: A rotary pump for fluids comprising a shaft to rotate about a longitudinal axis and a cylindrical rotor centrally secured to that shaft. A housing encasing the shaft and rotor includes, interior end walls adjacent to the rotor disks and an interior side wall. Fluid inlet and outlet ports are provided at spaced locations in the housing side wall. Paddles are pivotably secured to the rotor in pockets in the rotor, to pivot about points at rearward sides of the paddles, for movement between extended positions with the paddles extending outwardly beyond the cylindrical surface of the rotor and retracted positions where the paddles are seated entirely within their corresponding pockets. A means is provided to bias each paddle towards the extended position, but to allow the paddle to move towards that extended position, but to allow the paddle to move towards the retracted position.
    Type: Grant
    Filed: March 3, 2004
    Date of Patent: March 4, 2008
    Assignee: 1564330 Ontario Inc.
    Inventor: Albert W. Patterson
  • Patent number: 7172039
    Abstract: The present invention generally relates to an apparatus and method for use in a wellbore. In one aspect, a downhole tool for use in a wellbore is provided. The downhole tool includes a housing having a shaped inner bore, a first end and a second end. The downhole tool further includes a rotor having a plurality of extendable members, wherein the rotor is disposable in the shaped inner bore to form at least one chamber therebetween. Furthermore, the downhole tool includes a substantially axial fluid pathway through the chamber, wherein the fluid pathway includes at least one inlet proximate the first end and at least one outlet proximate the second end. In another aspect a downhole motor for use in a wellbore is provided. In yet another aspect, a method of rotating a downhole tool is provided.
    Type: Grant
    Filed: October 29, 2003
    Date of Patent: February 6, 2007
    Assignee: Weatherford/Lamb, Inc.
    Inventors: David Warren Teale, Greg Marshall
  • Patent number: 6939117
    Abstract: A rotary machine (10) comprises an inner housing (12) having valving means (14) which includes a shaft (15) for directing working fluid through the machine (10) and, an outer housing (16) within which the inner housing resides. A working chamber (18) is defined between the inner and outer housings (12 and 16). A plurality of gates (20) are supported by the inner housing and are swingable along their respective longitudinal axis between a sealing position in which the gates form a seal against surface (22) of outer housing (16) and a retracted position in which the gates (20) lie substantially against surface (24) of the housing (12).
    Type: Grant
    Filed: December 20, 2000
    Date of Patent: September 6, 2005
    Assignee: Merlin Corporation Pty Ltd
    Inventors: Daryl Wheeler, Raalin Wheeler, Benjamin Dytynski
  • Patent number: 6824369
    Abstract: This invention concerns pumping fluids to both high pressures and high flow rates and thus has a very high power density. The technology pertains to both fluid power and to fluid transfer and is adaptable to a wide scope of use. The concept is a very simple rotary variable displacement expansible chamber pump which can also be a rotary kinetic pump and thus is a hybrid. At a positive displacement setting, the pump primes by positive displacement, then as the rotational speed increases; the pump gains a kinetic pumping component, then as head pressure increases the pump again becomes positive displacement. At a zero displacement setting, the pump is purely a rotary kinetic pump. The variable displacement feature allows both performance and efficiency. The porting allows very high rotational speeds and flow rates near to centrifugal designs. When set at zero displacement, the device has features both of positive displacement fan (gear pump) and kinetic (centrifugal pump). The pump is vibration free and silent.
    Type: Grant
    Filed: October 25, 2002
    Date of Patent: November 30, 2004
    Inventor: Charles Dow Raymond
  • Patent number: 6746223
    Abstract: An orbiting rotary compressor assembly having a compression mechanism disposed in a housing and including relatively moving fixed and orbiting compression members including extending portions having surfaces engaged with each other and between which a compression chamber is located. The orbiting member has a centrally-located hub which moves eccentrically relative to the axis of rotation of a drive shaft in driving engagement with the hub. A vane operatively engages the fixed member extending portion and the orbiting member extending portion, and partially defines the compression chamber. An Oldham coupling is disposed about and is in engagement with the hub, and is in engagement with the fixed compression member, rotation of the orbiting compression member being prevented by the Oldham coupling.
    Type: Grant
    Filed: December 26, 2002
    Date of Patent: June 8, 2004
    Assignee: Tecumseh Products Company
    Inventor: Dan M. Manole
  • Patent number: 6712589
    Abstract: Scroll compressors (1) may include a housing (2, 3) having an inlet port (3a) and an outlet port (3b). A drive scroll (10) may be rotatably disposed within the housing and may have a rotational axis. A driven scroll (20) may be rotatably disposed within the housing and may have a rotational axis. The driven scroll rotational axis preferably is offset to the drive scroll rotational axis. Further, at least one compression chamber (30) is preferably defined between the drive scroll and the driven scroll. A first bearing (14) may rotatably support the drive scroll in a cantilever manner and a second bearing (24, 115) may rotatably support the driven scroll in a cantilever manner. A transmission (31, 131, 231 and 331) or other device may be provided to rotate the drive scroll in synchronism with the driven scroll.
    Type: Grant
    Filed: April 15, 2002
    Date of Patent: March 30, 2004
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Tatsushi Mori, Masao Iguchi, Masahiro Kawaguchi, Yasuharu Odachi, Hirohito Hayashi
  • Patent number: 6640910
    Abstract: A system for downhole drilling and coring includes a roller vane motor for driving a drill bit. The motor has a single jacket with a lower end and an upper end and being embodied such that all drilling fluid passes inside the jacket to the drill bit. The system further has a bent sub connected to the upper end of the motor. The jacket has outwardly projecting curved members forming recesses therebetween for the passage of return drilling fluid, the curved members creating a circular surface having a diameter approximately equal to that of the drill bit. The curved members as well as the recesses therebetween each extend in longitudinal direction over the full length of the jacket of the motor.
    Type: Grant
    Filed: June 12, 2002
    Date of Patent: November 4, 2003
    Assignee: Ultidrill B.V.
    Inventor: Arnold Willem Josephus Grupping
  • Patent number: 6616430
    Abstract: Scroll compressors (1) may include a housing (2, 3) having an inlet port (3a) and an outlet port (3b). A drive scroll (10) may be rotatably disposed within the housing and may have a rotational axis. A driven scroll (20) may be rotatably disposed within the housing and may have a rotational axis. The driven scroll rotational axis preferably is offset with respect to the drive scroll rotational axis. Further, at least one compression chamber (30) is preferably defined between the drive scroll and the driven scroll. First bearings (14, 16, 16a) may rotatably support one of the drive scroll and the driven scroll in a straddle manner. A second bearing (24) may rotatably support the other of the drive scroll and the driven scroll in a cantilever manner. A transmission (31, 131, 231 and 331) or other device may be provided to rotate the driven scroll in synchronism with the drive scroll.
    Type: Grant
    Filed: May 29, 2002
    Date of Patent: September 9, 2003
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Tatsushi Mori, Masao Iguchi, Shinsuke Asou
  • Patent number: 6568928
    Abstract: A scroll-type compressor has a fixed scroll member, a movable scroll member, a front housing, a rear housing and a gasket seal. The fixed scroll member and the movable scroll member cooperate to form a compression region. The movable scroll member orbits relative to the fixed scroll member to compress refrigerant in the compression region. A movable scroll base plate of the movable scroll member forms a rear surface and a discharge hole substantially at the center of the movable scroll base plate. Pressure of the refrigerant discharged from the compression region is applied to the rear surface of the movable scroll base plate. The front housing accommodates the movable scroll member. The rear housing which is adjacent to the front housing, has the fixed scroll member inside. The gasket seal is located between the front housing and the rear housing.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: May 27, 2003
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Hiroyuki Gennami, Kazuhiro Kuroki, Kenji Isomura, Shinji Tsubai, Naohiro Nakajima, Yasushi Watanabe
  • Publication number: 20030091454
    Abstract: This invention concerns pumping fluids to both high pressures and high flow rates and thus has a very high power density. The technology pertains to both fluid power and to fluid transfer and is adaptable to a wide scope of use The concept is a very simple rotary variable displacement expansible chamber pump which can also be a rotary kinetic pump and thus is a hybrid. At a positive displacement setting, the pump primes by positive displacement, then as the rotational speed increases; the pump gains a kinetic pumping component, then as head pressure increases the pump again becomes positive displacement. At a zero displacement setting, the pump is purely a rotary kinetic pump. The variable displacement feature allows both performance and efficiency. The porting allows very high rotational speeds and flow rates near to centrifugal designs. When set a zero displacement, the device has features both of positive displacement fan (gear pump) and kinetic (centrifugal pump). The pump is vibration free and silent.
    Type: Application
    Filed: October 25, 2002
    Publication date: May 15, 2003
    Inventor: Charles Dow Raymond
  • Patent number: 6561777
    Abstract: A roller vane motor for downhole drilling comprises a housing and a rotor. The housing contains wing deflector cams that divide the space between the housing and the rotor into a high-pressure chamber and a low-pressure chamber. The housing at one of its axial ends has a first bearing part for the rotor, wherein the rotor at the side of the first bearing part is provided with a central inlet conduit that is connected with the rotor space for the supply of driving fluid. The housing has a second bearing part for the rotor, the housing at or near each rising part of the wing deflector cams being provided with one or more outlet ports that are connected with the rotor space and a connecting channel outside the second bearing part. The connecting channel is connected with an opening in the part of the rotor that serves for attaching a drill bit.
    Type: Grant
    Filed: August 20, 2001
    Date of Patent: May 13, 2003
    Inventor: Arnold W. J. Grupping
  • Patent number: 6558143
    Abstract: Scroll compressors may include a stationary scroll, a drive shaft, a crank shaft coupled to the drive shaft, a bearing member coupled to the crank shaft and a movable scroll coupled to the crank shaft. The movable scroll is typically disposed adjacent to the stationary scroll. Further, the movable scroll preferably includes a boss that extends in the axial direction of the crank shaft. A spacer may be disposed between the boss and the bearing member and the spacer preferably transmits orbital movement of the crank shaft to the movable scroll. A compression chamber is defined by a space between the stationary scroll and the movable scroll. Fluid (e.g. a refrigerant gas) is compressed within the compression chamber when the movable scroll revolves or orbits with respect to the stationary scroll. A discharge port may be defined within the movable scroll and may be adapted to discharge the compressed fluid to a side that is opposite of the stationary scroll.
    Type: Grant
    Filed: September 13, 2001
    Date of Patent: May 6, 2003
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Naohiro Nakajima, Hiroyuki Gennami, Kazuhiro Kuroki, Kazuo Kobayashi, Shinji Tsubai, Yasushi Watanabe
  • Patent number: 6544016
    Abstract: Scroll compressors may preferably include, for example, a stationary scroll, a drive shaft member, a movable scroll, a bearing member, a compression chamber, a discharge port, a discharge valve and a discharge valve clamping device. The drive shaft member may revolve around a revolution axis. The bearing member may be disposed between the movable scroll and the drive shaft member in order to transmit the revolution of the drive shaft member to the movable scroll. The compression chamber may be defined by a space formed between the stationary scroll and the movable scroll. The compression chamber compresses the fluid drawn into the compression chamber when the movable scroll revolves or orbits with respect to the stationary scroll. The discharge port is disposed within the movable scroll and is adapted to discharge fluid within the compression chamber to the opposite side of the stationary scroll. The discharge valve clamping device is preferably affixed to the movable scroll.
    Type: Grant
    Filed: September 13, 2001
    Date of Patent: April 8, 2003
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Hiroyuki Gennami, Kazuhiro Kuroki, Kazuo Kobayashi, Shinji Tsubai, Naohiro Nakajima, Masahiro Kawaguchi
  • Publication number: 20030044297
    Abstract: Scroll compressors may preferably include, for example, a stationary scroll, a drive shaft member, a movable scroll, a bearing member, a compression chamber, a discharge port, a discharge valve and a discharge valve clamping device. The drive shaft member may revolve around a revolution axis. The bearing member may be disposed between the movable scroll and the drive shaft member in order to transmit the revolution of the drive shaft member to the movable scroll. The compression chamber may be defined by a space formed between the stationary scroll and the movable scroll. The compression chamber compresses the fluid drawn into the compression chamber when the movable scroll revolves or orbits with respect to the stationary scroll. The discharge port is disposed within the movable scroll and is adapted to discharge fluid within the compression chamber to the opposite side of the stationary scroll. The discharge valve clamping device is preferably affixed to the movable scroll.
    Type: Application
    Filed: September 13, 2001
    Publication date: March 6, 2003
    Inventors: Hiroyuki Gennami, Kazuhiro Kuroki, Kazuo Kobayashi, Shinji Tsubai, Naohiro Nakajima, Masahiro Kawaguchi
  • Patent number: 6514060
    Abstract: Spiral fixed scroll teeth (2a) project from an end plate (2b) of a fixed scroll (2), and spiral movable scroll teeth (4a) project from an end plate (4b) of a movable scroll (4). The end plate (4b) of the movable scroll (4) is provided with a discharge port (8) for discharging compressed refrigerant gas. A pressure chamber (16) is provided on the back surface of the end plate (2b). A port (10) communicating with the pressure chamber (16) is provided on a position of the end plate (2b) opposed to the discharge port (8). Thus obtained is a scroll compressor reducing pulsation when discharging a fluid by feeding the compressed fluid into the pressure chamber.
    Type: Grant
    Filed: August 6, 2001
    Date of Patent: February 4, 2003
    Assignee: Daikin Industries, Ltd.
    Inventors: Suguru Ishiguro, Yoshitaka Shibamoto, Mikio Kajiwara, Nobuhiro Nojima, Ryohei Deguchi
  • Patent number: 6506036
    Abstract: Scroll compressors may preferably include a stationary scroll, a drive shaft, a crank shaft coupled to the drive shaft and a bush coupled to the outer surface of the crank shaft. A seal is preferably disposed between the bush and the crank shaft and the seal is elastically deformable in the radial direction of the crank shaft. A movable scroll may be coupled to the crank shaft and disposed adjacent to the stationary scroll. A compression chamber is defined by a space between the stationary scroll and the movable scroll, such that fluid is compressed within the compression chamber when the movable scroll revolves or orbits with respect to the stationary scroll. Further, a discharge port is preferably defined within the movable scroll and adapted to release the compressed fluid to a side that is opposite of the stationary scroll.
    Type: Grant
    Filed: September 13, 2001
    Date of Patent: January 14, 2003
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Shinji Tsubai, Hiroyuki Gennami, Kazuhiro Kuroki, Kazuo Kobayashi, Naohiro Nakajima
  • Patent number: 6499976
    Abstract: A roller vane motor having a housing and a stator positioned on an inside surface of the housing. The stator has an internal wall with an inlet port and an outlet port and the portion of this internal wall at the outlet port tapers open at an angle of less than 45 degrees relative to a tangent of the internal wall. A rotor assembly is positioned within the stator. The rotor assembly includes: i) a rotor shaft, ii) a plurality of flutes extending from the rotor shaft; and iii) cylindrical rollers positioned between said flutes.
    Type: Grant
    Filed: August 17, 2001
    Date of Patent: December 31, 2002
    Inventors: Andrew J. McPhate, Matthew McPhate, Douglas R. Fleming
  • Publication number: 20020182094
    Abstract: Scroll compressors (1) may include a housing (2, 3) having an inlet port (3a) and an outlet port (3b). A drive scroll (10) may be rotatably disposed within the housing and may have a rotational axis. A driven scroll (20) may be rotatably disposed within the housing and may have a rotational axis. The driven scroll rotational axis preferably is offset with respect to the drive scroll rotational axis. Further, at least one compression chamber (30) is preferably defined between the drive scroll and the driven scroll. First bearings (14, 16, 16a) may rotatably support one of the drive scroll and the driven scroll in a straddle manner. A second bearing (24) may rotatably support the other of the drive scroll and the driven scroll in a cantilever manner. A transmission (31, 131, 231 and 331) or other device may be provided to rotate the driven scroll in synchronism with the drive scroll.
    Type: Application
    Filed: May 29, 2002
    Publication date: December 5, 2002
    Inventors: Tatsushi Mori, Masao Iguchi, Shinsuke Asou
  • Patent number: 6464481
    Abstract: Scroll compressor may include, for example, a stationary scroll, a drive shaft, a crank shaft coupled to the drive shaft, a bush coupled to the outer surface of the crank shaft and a movable scroll coupled to the crank shaft. The movable scroll is preferably disposed adjacent to the stantionary scroll. A boss may be coupled to the movable scroll and the boss preferably protrudes from the movable scroll at the opposite side of the stationary scroll. A seal is preferably disposed in a clerance defined between the bush and the boss. A compression chamber is defined by a space between the stationary scroll and the movable scroll. Fluid is compressed within the compression chamber when the movable scroll revolves or orbits with respect to the stationary scroll. A discharge port is preferably defined within the movable scroll and is adapted to discharge compressed fluid to a side that is opposite of the stationary scroll.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: October 15, 2002
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Shinji Tsubai, Hiroyuki Gennami, Masao Iguchi, Naohiro Nakajima, Kazuo Kobayashi, Kazuhiro Kuroki, Masahiro Kawaguchi
  • Patent number: 6461120
    Abstract: A refrigerant passage within a main shaft includes an axial refrigerant passage extending in parallel with the main shaft from the end surface thereof, and a radial refrigerant passage communicating with the axial refrigerant passage and extending radially outwardly. The radial refrigerant passage is located between the end surface of the main shaft and a motor rotor. Thus, when the main shaft rotates, suctioned refrigerant is uniformly sprayed toward an entire coil. Further, the refrigerant flows toward a compression mechanism through the electric motor, thereby cooling the electric motor effectively.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: October 8, 2002
    Assignee: Denso Corporation
    Inventors: Yoshiaki Harakawa, Yoshitaka Akiyama, Masami Sanuki
  • Patent number: 6454551
    Abstract: The pressure leakage from the back pressure chamber installed at the back side of the movable scroll to the low pressure area can be prevented. An eccentric shaft (17) formed integrally to a drive shaft (14) is inserted into a bushing (19). A balance weight (18) is fixed to the bushing (19). A cylindrical portion (34) is provided so as to protrude at the back side of the movable scroll base (22), and the bushing (19) supports the cylindrical portion (34) via a needle bearing (21). A seal member (35) is interposed between the end surface of the cylindrical portion (34) and the balance weight (18). The inside of a cylinder of the cylindrical portion (34) is made to be a back pressure chamber (36).
    Type: Grant
    Filed: May 21, 2001
    Date of Patent: September 24, 2002
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventors: Kazuhiro Kuroki, Hiroyuki Gennami, Kazuo Kobayashi, Yasushi Watanabe
  • Publication number: 20020085938
    Abstract: A scroll-type compressor has a fixed scroll member, a movable scroll member, a front housing, a rear housing and a gasket seal. The fixed scroll member and the movable scroll member cooperate to form a compression region. The movable scroll member orbits relative to the fixed scroll member to compress refrigerant in the compression region. A movable scroll base plate of the movable scroll member forms a rear surface and a discharge hole substantially at the center of the movable scroll base plate. Pressure of the refrigerant discharged from the compression region is applied to the rear surface of the movable scroll base plate. The front housing accommodates the movable scroll member. The rear housing which is adjacent to the front housing, has the fixed scroll member inside. The gasket seal is located between the front housing and the rear housing.
    Type: Application
    Filed: December 19, 2001
    Publication date: July 4, 2002
    Inventors: Hiroyuki Gennami, Kazuhiro Kuroki, Kenji Isomura, Shinji Tsubai, Naohiro Nakajima, Yasushi Watanabe
  • Publication number: 20020076345
    Abstract: A hydraulic pump has a housing with an inner toothed ring, and an outer toothed wheel eccentrically mounted within the ring, with pressure pocket space between the teeth of the ring and the wheel. The wheel is eccentrically rotatably and orbitally mounted within the ring. A rotary slide valve is mounted within the wheel. A valve plate with an open center is adjacent the wheel. A rotary slide valve is positioned within the open center of the valve plate. Fluid under pressure in passageways is provided to a front group of pressure pocket spaces to cause the wheel to rotate. A shaft is operatively connected to the wheel.
    Type: Application
    Filed: November 16, 2001
    Publication date: June 20, 2002
    Inventor: Gunnar L. Hansen
  • Publication number: 20020057975
    Abstract: Scroll compressors may include a stationary scroll, a drive shaft, a crank shaft coupled to the drive shaft, a bearing member coupled to the crank shaft and a movable scroll coupled to the crank shaft. The movable scroll is typically disposed adjacent to the stationary scroll. Further, the movable scroll preferably includes a boss that extends in the axial direction of the crank shaft. A spacer may be disposed between the boss and the bearing member and the spacer preferably transmits orbital movement of the crank shaft to the movable scroll. A compression chamber is defined by a space between the stationary scroll and the movable scroll. Fluid (e.g. a refrigerant gas) is compressed within the compression chamber when the movable scroll revolves or orbits with respect to the stationary scroll. A discharge port may be defined within the movable scroll and may be adapted to discharge the compressed fluid to a side that is opposite of the stationary scroll.
    Type: Application
    Filed: September 13, 2001
    Publication date: May 16, 2002
    Inventors: Naohiro Nakajima, Hiroyuki Gennami, Kazuhiro Kuroki, Kazuo Kobayashi, Shinji Tsubai, Yasushi Watanabe
  • Publication number: 20020039539
    Abstract: Scroll compressor may include, for example, a stationary scroll, a drive shaft, a crank shaft coupled to the drive shaft, a bush coupled to the outer surface of the crank shaft and a movable scroll coupled to the crank shaft. The movable scroll is preferably disposed adjacent to the stationary scroll. A boss may be coupled to the movable scroll and the boss preferably protrudes from the movable scroll at the opposite side of the stationary scroll. A seal is preferably disposed in a clearance defined between the bush and the boss. A compression chamber is defined by a space between the stationary scroll and the movable scroll. Fluid is compressed within the compression chamber when the movable scroll revolves or orbits with respect to the stationary scroll. A discharge port is preferably defined within the movable scroll and is adapted to discharge compressed fluid to a side that is opposite of the stationary scroll.
    Type: Application
    Filed: September 28, 2001
    Publication date: April 4, 2002
    Inventors: Shinji Tsubai, Hiroyuki Gennami, Masao Iguchi, Naohiro Nakajima, Kazuo Kobayashi, Kazuhiro Kuroki, Masahiro Kawaguchi
  • Publication number: 20020039540
    Abstract: A scroll type compressor includes a fixed scroll member, a movable scroll member, an inlet, a discharge port, a discharge valve, a first pressure region and a second pressure region. The inlet is formed through the fixed scroll base plate. The discharge port is formed through the movable scroll member. The discharge valve opens and closes the discharge port. The first pressure region and the second pressure region defined at opposite sides of the movable scroll member apply pressure to the movable scroll member. Gas introduced through the inlet is compressed and highly pressurized in accordance with the movable scroll member orbiting with respect to the fixed scroll member. The highly pressurized gas is discharged from a compression region via the discharge port and the discharge valve. The compressor is provided with a communication passage so as to intercommunicate the first pressure region and the second pressure region during a predetermined period of a compression cycle established by the gas.
    Type: Application
    Filed: September 28, 2001
    Publication date: April 4, 2002
    Inventors: Kazuhiro Kuroki, Hiroyuki Gennami, Naohiro Nakajima, Shinji Tsubai, Yasushi Watanabe, Masahiro Kawaguchi
  • Publication number: 20010055537
    Abstract: A roller vane motor for downhole drilling comprises a housing (1) and a rotor (2). The housing contains wing deflector cams (5) that divide the space between housing and rotor into chambers (8a, b). The rotor is equipped with cylindrical rollers (7) in recesses (6), which rollers can move between an extended and a retracted position. Drilling fluid enters the chamber parts (8a) through inlet ports (10) in the upper bearing part of the housing (1) and pushes rollers (71) into their extended position and in a clockwise direction, making the rotor turn, whilst drilling fluid of lower pressure is pushed from the corresponding chamber parts (8b) through outlet ports (9) in the lower bearing part of the housing (1) and further to the drill bit below. When the rollers (71) reach the wing deflector cams (5) they are forced into the retracted position, their task being taken over by rollers (72).
    Type: Application
    Filed: August 20, 2001
    Publication date: December 27, 2001
    Inventor: Arnold W.J. Grupping
  • Publication number: 20010048885
    Abstract: The oil passage for lubricating a seal means, which separates a high discharge pressure area inside a compressor and a low pressure area inside the compressor with a surface of a rotating member, can be eliminated. A lip seal 37, which is interposed between a center housing 12 and a circumferential surface of a rotating shaft 14, is prevented from being withdrawn from an insertion hole 121 by a circlip 38. A support portion 122, which forms a part of the insertion hole 121 and supports the lip seal 37, extends out into a motor housing 13. An outlet port 324 of a discharge passage 32 is directed to the top portion of the support portion 122 and the circlip 38.
    Type: Application
    Filed: April 30, 2001
    Publication date: December 6, 2001
    Inventors: Hiroyuki Gennami, Kazuhiro Kuroki, Kazuo Kobayashi
  • Patent number: 6302666
    Abstract: A roller vane motor for downhole drilling comprises a housing (1) and a rotor (2). The housing contains wing deflector cams (5) that divide the space between housing and rotor into chambers (8a, b). The rotor is equipped with cylindrical rollers (7) in recesses (6), which rollers can move between an extended and a retracted position. Drilling fluid enters the chamber parts (8a) through inlet ports (10) in the upper bearing part of the housing (1) and pushes rollers (71) into their extended position and in a clockwise direction, making the rotor turn, whilst drilling fluid of lower pressure is pushed from the corresponding chamber parts (8b) through outlet ports (9) in the lower bearing part of the housing (1) and further to the drill bit below. When the rollers (71) reach the wing deflector cams (5) they are forced into the retracted position, their task being taken over by rollers (72).
    Type: Grant
    Filed: April 20, 2000
    Date of Patent: October 16, 2001
    Inventor: Arnold W. J. Grupping
  • Publication number: 20010014293
    Abstract: In a compressor with a scroll compression mechanism having a stationary scroll and a movable scroll, a bearing through which the movable scroll is rotatably connected to a crank portion is disposed in a bearing box. The bearing box is provided for defining a back side room into which high-pressure refrigerant discharged from a discharge hole of an end plate of the movable scroll is introduced. The back side room is partitioned from the compression room by the end plate of the movable scroll to be opposite to the compression room, and a seal member which is disposed to air-tightly partition the back side room and a suction room of the compressor. Thus, a discharge pressure of refrigerant is applied from a back side of the movable scroll only at a position corresponding to the back side room. Accordingly, it is possible to reduce a compression thrust force without using a pressure adjustment valve.
    Type: Application
    Filed: December 21, 2000
    Publication date: August 16, 2001
    Inventors: Yuichi Tsumagari, Yoshitaka Akiyama, Kazuhiro Kuroki, Hiroyuki Gennami
  • Publication number: 20010012489
    Abstract: A refrigerant passage within a main shaft includes an axial refrigerant passage extending in parallel with the main shaft from the end surface thereof, and a radial refrigerant passage communicating with the axial refrigerant passage and extending radially outwardly. The radial refrigerant passage is located between the end surface of the main shaft and a motor rotor. Thus, when the main shaft rotates, suctioned refrigerant is uniformly sprayed toward an entire coil. Further, the refrigerant flows toward a compression mechanism through the electric motor, thereby cooling the electric motor effectively.
    Type: Application
    Filed: December 21, 2000
    Publication date: August 9, 2001
    Inventors: Yoshiaki Harakawa, Yoshitaka Akiyama, Masami Sanuki