Pump Within Rotary Working Member Patents (Class 417/355)
  • Patent number: 11137213
    Abstract: A water cooling head includes water cooling head includes a casing, a base and a pump. The casing includes an inlet and an outlet. An outer side of the base has a heat-absorbing surface. A thermal conduction structure is disposed on an inner side of the base. An active space is defined by the base and the casing collaboratively. The pump includes a first magnetic element, a second magnetic element, an impeller and a pivotal part. The first magnetic element is located outside the active space. The first magnetic element is arranged between the impeller and the base along a direction perpendicular to the base. The pivotal part, the second magnetic element and the impeller are disposed within the active space. The pivotal part is connected with the impeller and arranged between the impeller and the base. The second magnetic element is installed on the pivotal part.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: October 5, 2021
    Assignee: AURAS TECHNOLOGY CO., LTD.
    Inventors: Chien-An Chen, Mu-Shu Fan, Chien-Yu Chen
  • Patent number: 10680499
    Abstract: The invention relates to an electrical machine, such as a motor vehicle that includes a rotor connected to a hollow shaft mounted such that it can rotate about an axis of rotation. The electric machine also includes a rotary transformer that includes a first slip ring and a first brush adjacent thereto. The first slip ring may be arranged inside the hollow shaft and is connected thereto. The invention also relates to a motor vehicle that includes a drive wheel that is operatively connected to the electrical machine.
    Type: Grant
    Filed: July 18, 2018
    Date of Patent: June 9, 2020
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventor: Simon Strasinsky
  • Patent number: 9309862
    Abstract: One example of a nutating fluid-mechanical energy converter includes a stator and a rotor. The stator includes an outer cylinder having a longitudinal passage 101 and an inner guide cylinder disposed longitudinally within the outer cylinder. The inner guide cylinder and outer cylinder are concentric and define an annulus for fluid flow. A longitudinal guide is attached to an outer surface of the inner guide cylinder and extending outwardly toward an inner surface of the outer cylinder. The rotor is positioned in the annulus to be eccentric relative to the outer cylinder. The rotor has a sidewall with a guide opening to receive the longitudinal guide. Fluid flowing through the annulus imparts a torque on the rotor causing the rotor to nutate within the annulus. The nutational motion of the rotor can be converted into a rotational motion using a suitable rotary output device.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: April 12, 2016
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Krunal Kanubhai Mehta, Ragi Lohidakshan Poyyara, Amitkumar Suresh Rawool
  • Patent number: 9243604
    Abstract: An in-pipe hydraulic turbine system includes a pipeline for fluid transport, the pipeline having an inlet and an outlet, and a turbine disposed within the pipeline, between the inlet and the outlet. The turbine is actuated by fluid moving through the pipeline and leaves usable fluid pressure downstream of the turbine.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: January 26, 2016
    Inventor: James Scott Montgomery
  • Publication number: 20150030475
    Abstract: A vacuum pump includes a pump inlet, a pump outlet, a rotor rotatable about an axis of rotation, at least one process gas pump stage for conveying a process gas present at the pump inlet from the pump inlet to the pump outlet, a motor space, and a drive motor which is arranged in the motor space, is configured for rotationally driving the rotor and which has a motor stator, wherein at least one gas path is provided for the process gas from the pump inlet to the pump outlet which leads through the motor space and which leads at least sectionally along the motor stator or through the motor stator.
    Type: Application
    Filed: July 23, 2014
    Publication date: January 29, 2015
    Inventors: Mirko Mekota, Jan Hofmann, Uwe Leib, Michael Schill, Bernhard Koch
  • Patent number: 8678781
    Abstract: A turbo type centrifugal pump is provided in which an angular oscillator is angularly oscillated so that fluid in a radial through hole receives centrifugal force. The angular oscillator is used in combination with a resonance oscillation motor that generates angular oscillation. The resonance oscillation motor is incorporated in the pump so that the pump structure and the drive mechanism are integrated. This reduces the size of the pump. Since the angular oscillation is a reciprocating rotation within an oscillation range less than 360°, a suction pipe can be connected to the radial through hole used in the angular oscillation. This eliminates the necessity for providing a shielding structure.
    Type: Grant
    Filed: October 13, 2009
    Date of Patent: March 25, 2014
    Assignee: Imagina Holdings Co., Ltd.
    Inventors: Takahito Imagawa, Atsunori Miyamura
  • Patent number: 8663738
    Abstract: Disclosed herein are an armature for fuel pumps and a manufacturing method thereof, in which a polymer coating film is formed on an armature core such that the armature has corrosion resistance to an alcohol fuel and to a highly corrosive fuel.
    Type: Grant
    Filed: February 9, 2011
    Date of Patent: March 4, 2014
    Assignee: Coavis
    Inventors: Kisang Moon, Seonghwan Moon
  • Publication number: 20140010683
    Abstract: Disclosed is a large-scale submersible sewage pump, comprising a pump and a pump seat installation structure, wherein the pump seat installation structure comprises a concrete installation base layer, and a pump seat for installing the pump. The pump seat is fixed to the pump installation layer, and the bottom of the pump is directly connected onto the pump seat. The pump comprises a motor cooling apparatus, wherein the cooling apparatus comprises an internal cooling apparatus installed inside the case of the motor, and an external cooling apparatus installed outside the motor. The pump seat installation structure can stably mount and support the large-scale submersible sewage pump, preventing potential safety hazard during running of the pump.
    Type: Application
    Filed: November 15, 2011
    Publication date: January 9, 2014
    Applicant: NINGBO JUSHEN PUMPS INDUSTRY CO., LTD.
    Inventors: Songmao Zhai, Quanmin Li, Jianguo Ying, Zhilong Lin, Jun Jing, Kangle Teng
  • Patent number: 8376926
    Abstract: A blood pump consisting of an inflow cannula, a stator fixed to the pump housing, a flow straightener, an impeller, and a diffuser. The pump may include a flow straightener assembly consisting of the flow straightener body and front shaft. The pump may include an impeller assembly with a bearing on the front hub section. The pump may have a body contour which is shaped such that the rear section of the flow straightener body blends into the inserted shaft and there is no axial gap between the end of the flow straightener other than the ends of the blades and the front hub of the impeller.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: February 19, 2013
    Assignee: MicroMed Technology, Inc.
    Inventors: Robert J. Benkowsi, Lee Hudson
  • Publication number: 20130039784
    Abstract: An electric motor vehicle coolant pump for cooling an internal combustion engine of a motor vehicle includes a pump housing and a rotor rotatably supported in the pump housing. The rotor comprises a motor rotor configured to be substantially pot-shaped. The motor rotor comprises a pot bottom and a ferromagnetic substance so as to be magnetized in at least a bipolar manner. A pump rotor comprises a plurality of rotor blades and an annular cover ring arranged on distal ends of the plurality of rotor blades. The plurality of rotor blades are configured to stand directly on the pot bottom of the motor rotor. The pump rotor and the motor rotor are each integral plastic material parts separately produced by an injection molding. The pump rotor and the motor rotor are made from different materials. The pump rotor is not ferromagnetic.
    Type: Application
    Filed: August 4, 2010
    Publication date: February 14, 2013
    Applicants: KOLEKTOR MAGNET TECHNOLOGY GMBH, PIERBURG PUMP TECHNOLOGY GMBH
    Inventors: Jens Teubel, Ronald Rathke, Martin Fiedlschuster, Michael Weinert, Norbert Weber, Pietro Giannico, Friedel Schlusnus
  • Patent number: 7832989
    Abstract: The pump comprises a pump body, a control member, an elastic member, and blades. The pump body has a holding space, one or more pump inlets, and one or more pump outlets. The holding space, the pump inlets, and the pump outlets communicate with each other. The pump outlets communicate with a fuel outlet of the fuel storage device; while the pump inlets communicate with a fuel reservoir of the fuel storage device. The control member passes through the fuel storage device and is rotatably set in the holding space. The elastic member is set fixed on the pump body and connects with the control member. The blades are set in the holding space and connect with the control member. Thereby, no extra energy is needed for the pump to transport the fuel from the fuel reservoir to the fuel cell.
    Type: Grant
    Filed: February 13, 2008
    Date of Patent: November 16, 2010
    Assignee: Wistron Corporation
    Inventors: Shung-Huei Chang, Shu-Hao Liang
  • Publication number: 20100147993
    Abstract: A propulsion system for a vertical take-off and landing ducted fan aerial vehicle is provided, the propulsion system comprising an internal combustion engine, an electric motor that comprises a motor generator, a motor drive and a battery. The motor drive and battery are integrated into the aerial vehicle and provide power to the ducted fan aerial vehicle. The electric motor may comprise a ring motor generator. In operation, this dual propulsion system serves as a weight-efficient option to allow for two sources of power on a ducted fan unmanned aerial vehicle.
    Type: Application
    Filed: December 12, 2008
    Publication date: June 17, 2010
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Richard E. Annati, Patrick L. O'Brien
  • Patent number: 7688589
    Abstract: A heat dissipation module for an electronic device includes a base disk, a suction disk, a water guide and a cover. The base has a containing space and a plurality of cooling strips. The suction base is attached to the base disk and further includes a water chamber for receiving sucked water, an inlet and an outlet. The water guide is attached to the suction disk with a guide port at the periphery thereof. The cover closes the suction disk and is movably joined to a guide fan. When the heat dissipation module is full with fluid, the fluid can flow therein rapidly while the guide fan rotating such that the fluid is discharged from and flows into the heat dissipation module more effectively.
    Type: Grant
    Filed: November 1, 2007
    Date of Patent: March 30, 2010
    Assignee: Asia Vital Components Co., Ltd.
    Inventor: Kuei-Fung Chiang
  • Patent number: 7568896
    Abstract: A pump for moving a liquid including a stator and a rotor which rotates to move at least one helical pumping member. The rotor in rotation is radially supported relative to the stator only by a layer of liquid maintained between the rotor and stator by rotor rotation.
    Type: Grant
    Filed: November 30, 2006
    Date of Patent: August 4, 2009
    Assignee: Pratt & Whitney Canada Corp.
    Inventor: Kevin Allan Dooley
  • Patent number: 7381036
    Abstract: A motor-pump unit is provided that has at least two internal gearwheel pumps axially aligned that are driven off of the rotor of the electric motor. The rotor of the electric motor is U-shaped and is concentrically disposed about the pump. The web of the U-shape is disposed in the region of the rotational axis with internal toothing that meshes with pinions of the at least two internal gearwheel pumps.
    Type: Grant
    Filed: January 30, 2004
    Date of Patent: June 3, 2008
    Assignee: Voith Turbo GmbH & Co. KG
    Inventors: Gerd Hundt, Franz Arbogast
  • Publication number: 20080124229
    Abstract: To improve the surface finish of the inner circumferential surfaces of the stator and to reduce the manufacturing effort, it is proposed that the stator with a stator housing 1 and with the stator blades 13 have a two-part design and to insert the stator blade 13 into the stator housing 5 in such a way that they rotate in unison. In terms of the process, it is proposed that a commercially available tube with an inner circumferential surface suitable for use as a sealing surface be used and that longitudinally extending joining means be prepared. The stator blades 13 manufactured as an individual part receive corresponding joining means, so that the stator housing 5 and the stator blades 13 are welded, clamped or screwed together.
    Type: Application
    Filed: April 14, 2005
    Publication date: May 29, 2008
    Inventors: Stefan Beetz, Winfried Krueger, Torsten Baustian, Joachim Uecker
  • Patent number: 7367787
    Abstract: A pumping unit is provided with a pump that is partially disposed in a stator of an electric motor. The rotor is at an opposite end from the pump and is connected to the pump shaft to drive it for fluid flow. The pump shaft can be positioned in a central bore of the rotor and connected thereto via a meshing gear.
    Type: Grant
    Filed: November 18, 2004
    Date of Patent: May 6, 2008
    Assignee: Voith Turbo GmbH & Co. KG
    Inventor: Franz Arbogast
  • Publication number: 20080075586
    Abstract: A pump includes a rotatable rotor installed in a motor part and at least one impeller installed in a pump part, capable of being rotated together with the rotor in unison. The rotor and the impeller are accommodated in a casing, and the impeller has an inlet at an inner periphery thereof and an outlet at an outer periphery thereof. A housing is arranged in both sides of an axial direction of the impeller and has an outer peripheral part coupled to the rotor at a rear side portion thereof, and the outer peripheral part is projected outwards further than a gap between an outer peripheral surface of the rotor and an inner peripheral surface of the casing in which the rotor is rotatably accommodated.
    Type: Application
    Filed: September 20, 2007
    Publication date: March 27, 2008
    Applicant: Matsushita Electric Works, Ltd.
    Inventors: Harumi Fukuki, Motohiko Matsuguma, Toshisuke Sakai, Tetsuya Anami
  • Patent number: 7314352
    Abstract: An electric pump comprises a case in which a core being enwound by a coil is embedded, a permanent magnet formed in a cylindrical shape, having a central axis being identical to that of the core, and positioned so as to face an inner peripheral side of the core, an outer rotor fixed to an inner peripheral side of the permanent magnet, a rotor unit including the permanent magnet and the outer rotor, an inner rotor having a central axis, which is eccentric from a central axis of the core, so as to rotate; and an inscribed-type pump for carrying out, by means of rotation of the inner rotor, which is engaged with the outer rotor so as to rotate in accordance with rotation of the outer rotor, intake and exhaust of fluids, wherein the rotor unit includes a slide surface extending in an axial direction; the case includes a cylindrical projecting ring portion having an identical central axis to that of the core, and the rotor unit is rotatably supported by the peripheral surface of the cylindrical projecting ring por
    Type: Grant
    Filed: February 17, 2005
    Date of Patent: January 1, 2008
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Hideki Nakayoshi, Atsutoshi Ikegawa
  • Patent number: 7229258
    Abstract: A blood pump has an impeller rotatably disposed and magnetically suspended within a cavity of a stator by a plurality of magnetic bearings (passive permanent and active electromagnetic) having impeller magnets on the impeller and stator magnets or coils/poles on the stator. A motor includes impeller magnets on the impeller and coils/poles associated with the stator. A single, annular blood flow path extends axially through the cavity between the impeller and the stator, and between the impeller magnets on the impeller and the stator magnets or the coils/poles on the stator.
    Type: Grant
    Filed: September 24, 2004
    Date of Patent: June 12, 2007
    Assignees: Medforte Research Foundation, University of Virginia Patent Foundation
    Inventors: Houston G. Wood, Paul E. Allaire, Don B. Olsen, Steven W. Day, Xinwei Song, Alex Untaroiu, Amy Throckmorton
  • Patent number: 7066718
    Abstract: The invention relates to a liquid ring compressor and/or pump, comprising a rotating compressor casing (1), a shaft journal (10) eccentrically located relative to the compressor casing's axis of rotation, with a surrounding bearing (15). One or more compressor wheels (14) with at least one vane are disposed in the compressor casing with the inside of the compressor wheel (14) in abutment against and rotating around the bearing (15) and inlet and outlet ports for the fluid that has to be compressed. When the compressor casing is rotated, a liquid ring (20) is created against the inner wall of the rotating compressor casing (1), which liquid ring (20) together with the compressor wheel (14) forms compression chambers.
    Type: Grant
    Filed: July 9, 2003
    Date of Patent: June 27, 2006
    Assignee: Roto International AS
    Inventor: Johan Haga
  • Patent number: 6896492
    Abstract: An improved air moving device that is scalable for use in a variety of applications requiring different fan sizes. The fan includes a number of fan blades, each having a discrete magnet mounted thereon. The orientation of each magnet is such that the direction of the magnetic field alternates from one blade to the next. The outside edge of each blade is metalized in a way that the magnetic field is present across the entire outer edge of the fan blade. In an alternate embodiment the fan blade assembly includes fan blades fabricated of a ferrous material in which the tips of the blades are magnetized through exposure to a strong magnetic field after fabrication of the blade assembly. The configuration of the blades in both embodiments enables the differential in field strength to assist with the rotation of the fan blades.
    Type: Grant
    Filed: August 28, 2002
    Date of Patent: May 24, 2005
    Assignee: Motorola, Inc.
    Inventor: Patrick Masterton
  • Patent number: 6884043
    Abstract: A fluid pump includes a pump head having an inlet for receiving fluid at a first pressure and an outlet for outputting fluid at a second pressure greater than the first pressure. Pressurized fluid is directed through a first passage to the outlet without the pressurized fluid leaving the pump head prior to reaching the outlet. A second passage directs pressurized fluid to a fluid circulation path which is at least partially external to the pump head with the fluid circulation path terminating adjacent the outlet. Pressurized fluid passing through the first and second passages is directed to the outlet without being re-pressurized by the pump head. The first and second passages are in opposed relation to one another to provide balancing of thrust produced by the flow of pressurized fluid through the passages. An electric motor drives the pump head. The fluid circulation path may include portions of the electric motor.
    Type: Grant
    Filed: November 8, 2002
    Date of Patent: April 26, 2005
    Assignee: Standex International Corp.
    Inventors: Robert R. Kimberlin, Robert E. Harvey, III, William M. Larson, William C. Rawnsley, Jr.
  • Patent number: 6585498
    Abstract: A motor-pump unit including an electric motor and a pump. The pump is concentrically surrounded by the rotor/stator of the motor. The rotor of the electric motor is U-shaped, viewed in an axial section. The cross-piece of the “U”, in the region of the common axis, is provided with an interior toothing. The shaft of the pump includes a pinion that meshes with the interior toothing of the cross-piece of the “U”.
    Type: Grant
    Filed: May 8, 2002
    Date of Patent: July 1, 2003
    Assignee: Voith Turbo GmbH & Co KG
    Inventors: Franz Arbogast, Gerd Hundt, Thomas Neubert
  • Patent number: 6554584
    Abstract: An inline type pump in which a rotor having an axial flow vane is arranged inside the cylindrical stator. The fluid is discharged from the discharging port after a rotating kinetic energy of the fluid transferred by the axial flow vane toward the discharging port is changed into a static pressure energy at the pressure chamber. With such an arrangement as above, it is possible to increase a fluid supplying efficiency after satisfying a small-sized structure and further it is possible to increase an output of the pump as well as its efficiency.
    Type: Grant
    Filed: January 30, 2001
    Date of Patent: April 29, 2003
    Assignee: Toshiba TEC Kabushiki Kaisha
    Inventors: Toshiyasu Takura, Yoshifumi Tanabe
  • Patent number: 6527521
    Abstract: A magnetically driven, axial flow pump comprises an electromagnetic unit arranged about the periphery of a pipe. A cylindrical rotor is accommodated within the pipe and is equipped with permanent magnets mounted on the periphery. A spiral, hollow vane is formed on an inner surface of the rotor by either casting or by cutting, such as with a NC machine, thus precluding the occurrence of gaps between the rotor and the vane. The lack of gaps within the pump makes the pump suitable for use as a blood pump.
    Type: Grant
    Filed: December 27, 2000
    Date of Patent: March 4, 2003
    Assignee: Nipro Corporation
    Inventor: Hiroyuki Noda
  • Patent number: 6527522
    Abstract: A heat dissipation fan structure includes a base plate provided with an air outlet which is provided with a bottom plate. The bottom plate is provided with a drive circuit control member. The base plate is provided with a plurality of poles of an even number. Each pole is wound with a coil. An insulating layer is mounted between the pole and the coil. Poles having the same polarity are connected by the same connecting wire. An impeller is pivoted and rotated on the bottom plate. The impeller has a plurality of blades that may drive air to flow. A magnet ring is mounted on peripheral edges of the blades of the impeller, and may be induced with the poles wound with coils.
    Type: Grant
    Filed: July 3, 2001
    Date of Patent: March 4, 2003
    Assignee: Yen Sun Technology Corp.
    Inventor: Chien-Jung Chen
  • Publication number: 20030007879
    Abstract: A heat dissipation fan structure includes a base plate provided with an air outlet which is provided with a bottom plate. The bottom plate is provided with a drive circuit control member. The base plate is provided with a plurality of poles of an even number. Each pole is wound with a coil. An insulating layer is mounted between the pole and the coil. Poles having the same polarity are connected by the same connecting wire. An impeller is pivoted and rotated on the bottom plate. The impeller has a plurality of blades that may drive air to flow. A magnet ring is mounted on peripheral edges of the blades of the impeller, and may be induced with the poles wound with coils.
    Type: Application
    Filed: July 3, 2001
    Publication date: January 9, 2003
    Inventor: Chien-Jung Chen
  • Patent number: 6499966
    Abstract: A motor driven pump comprises a motor stator (30), a motor rotor (10) operable to rotate around the outside of the stator (30) and a pump mechanism (40, 50) driven by the motor rotor (10) and disposed at least partly inside the motor stator (30).
    Type: Grant
    Filed: April 5, 2001
    Date of Patent: December 31, 2002
    Assignee: Automative Motion Technology, Ltd.
    Inventors: John Michael Werson, Robert William Beaven
  • Publication number: 20020172605
    Abstract: The invention relates to a motor/pump unit;
    Type: Application
    Filed: May 8, 2002
    Publication date: November 21, 2002
    Inventors: Franz Arbogast, Gerd Hundt, Thomas Neubert
  • Patent number: 6386839
    Abstract: A high performance radiator fan includes an axial fan and a centrifugal fan. The axial fan has a plurality of arched-shaped blades located between a protrusive circular hub and a closed motor shell for drawing airflow from the upper end of the axial fan through the curved blades into the centrifugal fan. The airflow is converged and spun out at high speed and great volume by centrifugal force to enhance heat dissipation efficiency.
    Type: Grant
    Filed: December 28, 2000
    Date of Patent: May 14, 2002
    Inventor: Wen-Hao Chuang
  • Patent number: 6386838
    Abstract: A reciprocating rotating engine having a combustion chamber and a pumping chamber is provided with two sets of free pistons and pumps vanes each set having two pistons and two pump vanes. The two sets of pistons and pump vanes define four separate combustion chamber portions and pumping chamber portions and reciprocally rotate in concentric circular paths under the force of compression ignited internal combustion forces, pumping and pressurizing hydraulic fluid contained within the pumping chamber.
    Type: Grant
    Filed: June 13, 2001
    Date of Patent: May 14, 2002
    Inventor: Steven W. Hoyt
  • Publication number: 20020021973
    Abstract: A cooling fan according to the present invention includes a housing. A fan assembly includes a plurality of fan blades carrying a rotor ring at the outer circumference of the fan assembly. A plurality of stator elements are supported by the housing to confront the rotor ring around only a portion of the outer circumference of the fan assembly. A motor controller is operatively connected to the stator elements to induce force on the rotor ring to turn the fan assembly.
    Type: Application
    Filed: August 20, 2001
    Publication date: February 21, 2002
    Applicant: HORTON, INC.
    Inventor: Christopher A. Nelson
  • Publication number: 20010051097
    Abstract: The present invention is applied to an inline type pump in which a rotor having an axial flow vane is arranged inside the cylindrical stator. The fluid is discharged from the discharging port after a rotating kinetic energy of the fluid transferred by the axial flow vane toward the discharging port is changed into a static pressure energy at the pressure chamber. With such an arrangement as above, it is possible to increase a fluid supplying efficiency after satisfying a small-sized structure and further it is possible to increase an output of the pump as well as its efficiency.
    Type: Application
    Filed: January 30, 2001
    Publication date: December 13, 2001
    Applicant: Toshiba Tec Kabushiki Kaisha
    Inventors: Toshiyasu Takura, Yoshifumi Tanabe
  • Publication number: 20010028853
    Abstract: A reciprocating rotating engine having a combustion chamber and a pumping chamber is provided with two sets of free pistons and pumps vanes each set having two pistons and two pump vanes. The two sets of pistons and pump vanes define four separate combustion chamber portions and pumping chamber portions and reciprocally rotate in concentric circular paths under the force of compression ignited internal combustion forces, pumping and pressurizing hydraulic fluid contained within the pumping chamber.
    Type: Application
    Filed: June 13, 2001
    Publication date: October 11, 2001
    Inventor: Steven W. Hoyt
  • Patent number: 6270322
    Abstract: A reciprocating rotating engine having a combustion chamber and a pumping chamber is provided with two sets of free pistons and pumps vanes each set having two pistons and two pump vanes. The two sets of pistons and pump vanes define four separate combustion chamber portions and pumping chamber portions and reciprocally rotate in concentric circular paths under the force of compression ignited internal combustion forces, pumping and pressurizing hydraulic fluid contained within the pumping chamber.
    Type: Grant
    Filed: June 17, 1999
    Date of Patent: August 7, 2001
    Inventor: Steven W. Hoyt
  • Publication number: 20010009645
    Abstract: A magnetically driven axial-flow pump comprising (i) an electromagnet unit 1 arranged about the periphery of a pipe “P”, (ii) a cylindrical rotor 5 accommodated in the pipe “P”, (iii) permanent magnets 6 mounted on the periphery of the rotor 5, and (iv) a spiral vane 7 formed on the inner surface of the rotor 5. A hollow is formed in the axial center portion of the vane 7. Because the rotor 5 and the vane 7 can be made as one piece with an NC machine, precluding the occurrence of gaps in the otherwise-inevitable joint between them, it is easy to make the rotor 5 and the vane 7. Because there are no gaps between the rotor 5 and the vane 7 as mentioned above and there is no object in contact with blood in the center portion of the vane, various germs do not enter blood, no thrombi are formed, blood tissues are not destroyed, and hence the pump is suitable as a blood pump.
    Type: Application
    Filed: December 27, 2000
    Publication date: July 26, 2001
    Inventor: Hiroyuki Noda
  • Patent number: 6234767
    Abstract: A laminating a plurality of permanent magnets embedded in storage pores, characterized in that each permanent magnet is inserted in each of said storage pore so as to form gaps at the both ends of the storage pore of the field core, thereby to form air paths for cooling air and a mechanism for cooling such a rotor having permanent magnets characterized by forming air paths for cooling air by providing gaps between each of the inner surface of the end plate and the outer surface of the field core, and also forming air paths for cooling air by placing air paths in the axis direction in contact with each of the permanent magnets on both ends of the permanent magnet, and placing an inlet and an outlet of the cooling air on each of said air paths in such a manner that the cooling air enters one end plate and exits the other end plate via each of said air paths are disclosed.
    Type: Grant
    Filed: October 1, 1998
    Date of Patent: May 22, 2001
    Assignee: Denyo Co., Lmtd.
    Inventors: Masanobu Takeda, Yasumasa Mizuno
  • Patent number: 6193473
    Abstract: A centrifugal compressor assembly, especially one having two or more stages, has a first compressor casing having a fluid inlet and a fluid outlet and a first impeller rotatable within the first compressor casing. A second compressor casing provided having a fluid inlet and a fluid outlet and a second impeller rotatable within the second compressor casing. Drive for the compressors is provided by a switched reluctance motor disposed between the first and second compressor casings and comprising a stator and a rotor rotatable within the stator. A drive shaft is provided, wherein the first impeller, second impeller and the rotor are mounted on the drive shaft and rotatable therewith.
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: February 27, 2001
    Assignee: Cooper Turbocompressor, Inc.
    Inventors: Gerald K. Mruk, Peter J. Weber, Forrest G. Landes
  • Patent number: 6056518
    Abstract: A fluid pump includes a housing having a passage therethrough with an inlet and an outlet. An impeller is positioned within the housing and includes an impeller axis, an inlet side and an outlet side. The impeller is axially supported only at the outlet side, and is configured to direct fluid at an acute angle relative to the impeller axis. A switched reluctance motor is secured to the housing for rotating the impeller for pumping fluid from the inlet to the outlet.
    Type: Grant
    Filed: August 12, 1998
    Date of Patent: May 2, 2000
    Assignee: Engineered Machined Products
    Inventors: David J. Allen, Brian K. Larche, Kenneth A. DeGrave
  • Patent number: 5938412
    Abstract: A pump for transferring fragile and aggressive fluids such as human blood and comprising a pumping chamber along with a fluid inlet port disposed on the chamber, and one or more outlet ports arranged transversely and medially of the inlet ports. A shrouded rotor is positioned within the pumping chamber having a core of dual-conical configuration converging toward opposed polar end regions and with an axis of rotation extending between the polar regions. The shrouded rotor includes magnets which are arranged at radially spaced locations and with a magnetic drive positioned to deliver rotational driving energy to the rotor. The sole support for the rotor are the hydrodynamic forces acting upon the rotor during its operation, with the rotor body having a relative density of between 10% and 90% of the relative density of the fluid being pumped.
    Type: Grant
    Filed: July 1, 1997
    Date of Patent: August 17, 1999
    Assignee: Advanced Bionics, Inc.
    Inventor: Valentin M. Izraelev
  • Patent number: 5484266
    Abstract: An axial-flow pump combined with an electric motor coaxially arranged therearound. The rotor (1) and stator (2) are common to both the electric motor and the pump. The rotor comprises a central tubular portion (11) defining a central channel (14) with a wall (15) provided with blades (16). The blades preferable do not extend as far as the channel axis (3) so that they define a central free area therealong. The outer portion of the rotor (1) has pairs of permanent magnets (24, 25) with stator coils (9) therebetween. The coils are actuated and deactuated by an electronic switching device (28) controlled by sensors (36, 37) for sensing markings on the rotor. The length of the rotor is smaller than its outer diameter. Said pump may be used to pump liquids or gases and drive vehicles, particularly submarines.
    Type: Grant
    Filed: October 19, 1994
    Date of Patent: January 16, 1996
    Inventor: Jose Murga
  • Patent number: 5332377
    Abstract: A fluid compressor comprises a cylinder, a cylindrical piston eccentrically disposed inside the cylinder so that the periphery of the piston is partly in contact with the inner face of the cylinder, the piston being movable relative to the cylinder, a spiral groove formed around the piston at pitches that gradually reduce from a suction side toward a discharge side, and a spiral blade fitted in the groove so that the blade is outwardly and inwardly movable in the groove, the blade defining a plurality of work chambers between the inner face of the cylinder and the periphery of the piston. The outer diameter of at least part of the blade is larger than the inner diameter of the cylinder.
    Type: Grant
    Filed: May 6, 1992
    Date of Patent: July 26, 1994
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takuya Hirayama, Masayuki Okuda
  • Patent number: 5316449
    Abstract: The invention relates to motor-driven pumps (1) with turbine, driven by a fluid at high pressure, and more specially intended for the pumping of liquids and of laden liquids. The motor-driven pump (1) according to the invention comprises a rotating sleeve (15) mounted in line between two fixed rings (13, 14). To the internal surface of the sleeve (15) are secured pumping members (31, 32) such as helical vanes. The outer surface of the sleeve (15) forms the rotor of a turbine into which a pressurised fluid is injected radially in a centripetal manner, from a distribution volute (8).
    Type: Grant
    Filed: November 3, 1992
    Date of Patent: May 31, 1994
    Assignee: N.V. Baggerwerken Decloedt & Zoon
    Inventor: Guido Vandendorpe
  • Patent number: 5158440
    Abstract: An integrated centrifugal pump and motor is provided by an impeller disk which contains permanent magnets and functions as the rotor for a brushless DC motor. The rotor is supported by non-contacting radial bearings and is hydrodynamically balanced against any axial thrust so that there is no contact between rotating and stationary elements during operation. Since the impeller disk is also the motor rotor, there is no need for a shaft, in the ordinary sense, which would penetrate the case and, thus, require seals. The resulting pump is compact and can be operated electronically at variable speeds.
    Type: Grant
    Filed: November 8, 1991
    Date of Patent: October 27, 1992
    Assignee: Ingersoll-Rand Company
    Inventors: Paul Cooper, Lee J. Bulson
  • Patent number: 4913631
    Abstract: The invention relates to a motor-driven pump intended for the pumping of liquids and driven by a pressurized motive fluid. The motor-driven pump (1) has a rotary sleeve (12) mounted in line between two stationary connections (8, 10). Mounted on the periphery of this sleeve (12) are the blades of a turbine which surrounds the sleeve (12). Rotary pumping members (24) are fastened inside the sleeve (12). The motor-driven pump (1) of the invention is intended more particularly for use as a submerged pump, especially as a pump for dredging at great depth.
    Type: Grant
    Filed: January 12, 1989
    Date of Patent: April 3, 1990
    Assignee: S. A. Dragages Decloedt and Fils
    Inventor: Guido Vandendorpe
  • Patent number: 4639202
    Abstract: Apparatus responsive to fluid pressures and capable of providing fluid under pressure to provide a unit which may selectively be used as a fluid motor or a fluid driven motor pump unit depending upon fluid directing and control structures and with minimal modifications to achieve the various desired functions. The unit consists of a pair of radially arranged units which units are known in the art as gerotors and which therefore includes a shaft for mounting or driving a first gear rotor of a first size, a rotor ring which is provided for both orbital and rotational movement with respect to the first gear rotor and with respect to a stationary ring gear surrounding the rotor ring. Valving plates including stationary and moving plates are provided to control fluid flow either between chambers formed by the various gear members and rotor ring for parallel flow when the unit is operating as a motor or individual chamber flow when the unit is operated as a motor pump.
    Type: Grant
    Filed: February 6, 1985
    Date of Patent: January 27, 1987
    Inventors: Joseph W. Mahanay, Lester D. Savage
  • Patent number: 4526517
    Abstract: In a centrifugal pump, a pumping section comprising a circular conduit has an input section subtending an arc on the circle. A plurality of channels connect the input section to an input conduit subtending an arc of a circle smaller than and concentric with or parallel to and vertically displaced from the circle defined by the pumping section. An output section subtends an arc defined by a circle concentric with and larger than the pumping section or vertically displaced therefrom. An impeller comprising vanes mounted on an annular disk is mounted in the pumping section and has magnetically saturable sections angularly spaced thereon driven by coils surrounding the pumping section and angularly spaced therealong.
    Type: Grant
    Filed: February 9, 1984
    Date of Patent: July 2, 1985
    Inventor: Warren P. Clegg
  • Patent number: 4504196
    Abstract: A fluid driven turbine having a stator member and a turbine member rotatable on an axis and supporting turbine blades and with a fluid compression section is described. The fluid compression section is provided along the axis of rotation of and inside the turbine member by providing: (1) a tubular extension (13 or 102) of the stator member and (2) a rotor means (30 or 104) and at least one rotor blade means (50, 51, 52) moveable perpendicular to the axis on the turbine member which fits inside the tubular member to provide at least two adjacent first and second chambers which are defined by an inside wall of the tubular extension and the rotor means and blade means. The tubular member has a line of minimum eccentricity (12) parallel to the axis with inlet and outlet openings (15, 16) on either side of the line of minimum eccentricity to and from the chambers so that fluid is drawn into the chamber and compressed and then exits from the chambers.
    Type: Grant
    Filed: December 20, 1982
    Date of Patent: March 12, 1985
    Inventor: Joachim E. Lay
  • Patent number: 4008983
    Abstract: A tip turbine type fan particularly adapted for use to effect a substantially instantaneous inflation of an emergency lifesaving device such as an escape slide or life raft. It features a housing having an improved unitized construction which defines an axial flow passage. A rotor within and transverse to said passage is operated under the influence of fluid under pressure directed from a chamber formed within and circumferentially of the wall structure of said housing. Drive of the rotor induces air from the environment surrounding the housing to enter the flow passage at one end to co-mingle with the fluid furnishing the motive power for the rotor and to move therewith from the passage to the interior of a connected article to be inflated.It is a feature of a preferred embodiment of the invention that the entrance to the flow passage is bridged by a platelike closure device which is normally biased to a position to seal the entrance to said flow passage.
    Type: Grant
    Filed: November 27, 1974
    Date of Patent: February 22, 1977
    Assignee: Tech Development Inc.
    Inventors: Joseph Flatt, Robert C. LoPiccolo, Eugene Linsker