Pump Within Armature Patents (Class 417/356)
  • Patent number: 11867202
    Abstract: A pump in which an electric motor which is connected to a rotor provided with at least one pump vane is integrated into a pump casing. The electric motor is a ring motor surrounding at least a portion of a fluid flow path through the pump. A stator is arranged internally in an intermediate section of the pump casing and surrounds the rotor. The rotor, which is supported in the pump casing, is cylinder-shaped and forms an intermediate portion of the fluid flow path, and the at least one pump vane is attached internally in the rotor.
    Type: Grant
    Filed: October 15, 2020
    Date of Patent: January 9, 2024
    Assignee: Marlin AS
    Inventors: Egil Eriksen, John Dale
  • Patent number: 11750046
    Abstract: A stator for an appliance motor includes an annular core made up of a metallic plate that is spirally wound into a laminated structure. An overmold extends around the core and further defines an interior section and a bridge section that extends between the core and the interior section. The interior section includes stator fastening portions that are used to attach the stator to a tub. The bridge section includes a first radial structure that extends from the interior section to the core. The bridge section includes a second radial structure that extends from the interior section to the core. The core, the interior section and the first and second radial structures define a toroidal cavity within the bridge section.
    Type: Grant
    Filed: March 18, 2021
    Date of Patent: September 5, 2023
    Assignee: Whirlpool Corporation
    Inventors: Krati Bhargava, Fang Deng, James Hull
  • Patent number: 11725655
    Abstract: An oil pump includes: a housing case made of a metal and having a rotor housing portion in which a rotor is rotatably housed, and a discharge hole through which oil within the rotor housing portion is introduced to the outside of the rotor housing portion by rotation of the rotor; and a housing made of a resin and having a case holding portion in which the rotor housing portion is held, and a discharge groove portion provided on a bottom portion of the case holding portion. The housing case has a fitting groove portion that is provided on a bottom portion of the rotor housing portion and that is fitted to the discharge groove portion so as to cover the discharge groove portion. The discharge hole is formed in the fitting groove portion.
    Type: Grant
    Filed: March 11, 2020
    Date of Patent: August 15, 2023
    Assignee: TOYODA GOSEI CO., LTD.
    Inventors: Shinya Sakai, Wataru Matsumoto
  • Patent number: 11672968
    Abstract: A blood pump includes a housing having an inlet. A rotor disposed in the housing and configured to rotate substantially about the axis to pump blood from the inlet to the outlet. A stator is disposed within the housing and configured to drive rotation of the rotor about the axis. A bearing mechanism for supporting the rotor inside the housing includes a magnetic bearing configured to magnetically support the rotor inside the housing in a radial direction from the axis. The bearing mechanism includes a sliding bearing configured to physically support the rotor inside the housing in an axial direction along the axis of the housing and allow rotation of the rotor substantially about the axis, the sliding bearing comprising at least one point of contact where the rotor is configured to physically contact a trunnion affixed to the housing.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: June 13, 2023
    Assignee: Carnegie Mellon University
    Inventor: James F. Antaki
  • Patent number: 11583672
    Abstract: A blood pump includes an impeller assembly housing; and an impeller assembly disposed within the impeller assembly housing. The impeller assembly includes an impeller having a main body, at least one impeller blade extending outwardly therefrom, and a skirt disposed around at least a portion of the main body. At least a portion of the at least one impeller blade is disposed between the main body and an inner surface of the skirt.
    Type: Grant
    Filed: August 27, 2020
    Date of Patent: February 21, 2023
    Assignee: BOSTON SCIENTIFIC SCIMED, INC.
    Inventors: Jan Weber, Matthew Boyer, Umang Anand
  • Patent number: 11512702
    Abstract: A submersible pump assembly includes an electric motor (1) and a centrifugal pump, which is driven by the electric motor (1). A rotor (4) formed of plastic or composite material which is manufactured in the extrusion or pultrusion method.
    Type: Grant
    Filed: July 9, 2020
    Date of Patent: November 29, 2022
    Assignee: GRUNDFOS HOLDING A/S
    Inventors: Allan Hjarbæk Holm, Morten Vammen Ørsnæs, Lars Østergaard
  • Patent number: 11506178
    Abstract: A friction limiting turbine gyroscope is a compact and efficient means to convert the energy of a moving fluid into electrical energy. The gyroscope's flywheel rotates when a fluid passes through its spokes while magnets located along the perimeter act upon proximate movable field coils to produce electricity. The spokes of the flywheel are optimized for the flow and density of the fluid with the ability to trans mutate using shaped memory alloys as well as rotate about their center of pressure allowing the flywheel to capture more of the energy from the fluid passing over their surfaces in all conditions. Mechanical energy losses are reduced because of the inherent stabilizing effects created by the gyroscope. Because of the stabilization, a magnetic bearing field effectively supports the gyroscope eliminating mechanical interference in rotation.
    Type: Grant
    Filed: February 28, 2021
    Date of Patent: November 22, 2022
    Assignee: Airborne Motor Works Inc.
    Inventors: Jesse Antoine Marcel, Jeffrey Scott Chimenti
  • Patent number: 11471664
    Abstract: Disclosed is a blood pump device. The blood pump device includes: a housing having an overflow passage, and an inlet and an outlet respectively connected to the overflow passage; a rotor assembly rotatably disposed in the overflow passage; a coil disposed in a side wall of the housing; a first permanent magnet portion disposed inside the rotor assembly; a second permanent magnet portion disposed in the side wall of the housing, the first permanent magnet portion and the second permanent magnet portion forming a radial permanent magnet bearing; a piece of electric motor magnetic steel disposed inside a rotor of the rotor assembly; and a magnetic protection portion disposed at a periphery of the coil, wherein the magnetic protection portion and the electric motor magnetic steel act together to provide an axial pre-tightening force for the rotor assembly.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: October 18, 2022
    Assignee: RocketHeart Technology Co. Ltd
    Inventors: Jian Xu, Qinglin Fan, Wenjin Wu, Xuman Zhang, Zhifu Han, Guogang Song, Ying Dai
  • Patent number: 11441601
    Abstract: A rotor bearing system includes an inner bearing component and an outer bearing component. One of the bearing components includes at least three protrusions sized to form a close running proximity to the remaining component. A bearing gap between the inner bearing component and the outer bearing component is sized to exclude the entry of red blood cells between the bearing components during operation of the rotor bearing system and causing the bearing to operate in an elasto-hydrodynamic regime of mixed- or boundary-lubrication.
    Type: Grant
    Filed: November 20, 2020
    Date of Patent: September 13, 2022
    Assignee: RBTS Inc.
    Inventors: Victor Obeid, Michael D. Neary, Edward Marlinski
  • Patent number: 11440633
    Abstract: An electrically-powered unmanned marine vehicle and method of making same, including providing a hull of the marine vehicle and mounting a submersible electric thruster to the hull via a mounting interface of the thruster. The thruster includes a stator assembly and a rotor assembly. The rotor assembly forms an internal cavity with a plurality of magnets arranged radially outwardly of the internal cavity. The stator assembly includes electrical windings that are disposed within the internal cavity of the rotor assembly. The thruster is configured to allow the internal cavity to be flooded with water when the thruster is submerged, and the electrical windings are encapsulated with a protective barrier that prevents the flooded water from contacting the windings. The thruster of the marine vehicle is thus water cooled, and the electromotive forces provided by the windings generate sufficient thrust to propel the marine vehicle through the water.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: September 13, 2022
    Assignee: Blue Robotics Inc.
    Inventors: Rustom F. Jehangir, Joseph A. Spadola, Adam Simko
  • Patent number: 11318295
    Abstract: A blood pump having a housing including an inlet element. The inlet element has a proximal portion sized to be received within at least a portion of a heart of a patient and defines a major longitudinal axis. A rotor is configured to rotate within the housing about the major longitudinal axis and impel blood from heart. At least one stator is disposed within the housing and positioned within the housing at least one from the group consisting of upstream and downstream from the rotor. During operation of the blood pump the rotor is maintained at an oblique angle with respect to the major longitudinal axis.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: May 3, 2022
    Assignee: HeartWare, Inc.
    Inventors: Carlos Reyes, Justin Wolman
  • Patent number: 11278712
    Abstract: A heart pump including a housing forming a cavity including at least one inlet and at least one outlet, an impeller provided within the cavity, the impeller including vanes for urging fluid from the inlet to the outlet upon rotation of the impeller, a drive that rotates the impeller within the cavity, a magnetic bearing including at least one bearing coil that controls an axial position of the impeller within the cavity and a controller. The controller includes an electronic processing device that monitors changes in a bearing indicator in response to a perturbation in blood flow, the bearing indicator being at least partially indicative of operation of the magnetic bearing and controls the drive to thereby selectively change a rotational speed of the impeller at least partially in accordance with changes in the bearing indicator.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: March 22, 2022
    Assignee: BiVACOR Inc.
    Inventors: Nicholas Greatrex, Daniel Timms, Matthias Kleinheyer
  • Patent number: 11160914
    Abstract: The present invention relates to a rotary blood pump with a double pivot contact bearing system with an operating range between about 50 mL/min and about 1500 mL/min, wherein the force on the upper bearing is less than 3N during operating speeds up to 6000 rpm. The rotary blood pump is part of a blood pump system that includes blood conduit(s), a control system with optional sensors, and a power source.
    Type: Grant
    Filed: April 15, 2019
    Date of Patent: November 2, 2021
    Assignee: Artio Medical, Inc.
    Inventors: F. Nicholas Franano, Howard M. Loree, II, Geoff Tansley, Steve Woodard, Barrett Hutto
  • Patent number: 11154703
    Abstract: A heart pump including: a housing forming a cavity including: at least one inlet aligned with an axis of the cavity; and, at least one outlet provided in a circumferential outer wall of the cavity; an impeller provided within the cavity, the impeller including vanes for urging fluid from the inlet to the outlet; and, a drive for rotating the impeller in the cavity and wherein a flow path through the pump has a minimal cross-sectional area of at least 50 mm2.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: October 26, 2021
    Assignee: BiVACOR Inc.
    Inventor: Daniel Timms
  • Patent number: 11143189
    Abstract: A novel integrated modular, multi-stage motor-pump/compressor device (10) is disclosed herein. In one example, the device (10) includes an outer housing (12) an electric motor stator (25) positioned within the outer housing (12) and a rotatable integrated motor/pump rotor (18) positioned within the electric motor stator (25). The rotatable integrated motor/pump rotor (18) comprises at least one electromagnet driver device (42, 33, 37) that is adapted to be electromagnetically coupled with the electric motor stator (25) and at least one impeller (28), where an inner surface (34A) of the rotatable integrated motor/pump rotor (18) and the impeller (28) define a primary process fluid flow path (36) within the rotatable integrated motor/pump rotor (18).
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: October 12, 2021
    Assignee: FMC Technologies, Inc.
    Inventors: Costin Ifrim, Bradley Dean Beitler, Bryan Wang Lam, Brian Scott Dejarnett
  • Patent number: 11085428
    Abstract: The invention relates to a hydraulic device for a rail vehicle including a tank region for a hydraulic fluid, a motor having a pump for pumping the hydraulic fluid, a hydraulic connection panel for providing hydraulic fluid paths and for holding hydraulic components, a control region for controlling the hydraulic components, and a housing. The tank region and the control region are arranged on opposite sides of the hydraulic connection panel. The motor is arranged together with the pump on one side of the hydraulic connection panel.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: August 10, 2021
    Inventor: Marcus Clev
  • Patent number: 10960200
    Abstract: A heart pump including a housing defining a cavity including at least one inlet and at least one outlet, an impeller provided within the cavity, the impeller including vanes for urging fluid from the inlet to the outlet upon rotation of the impeller, a drive that rotates the impeller within the cavity, a magnetic bearing including at least one bearing coil that controls an axial position of the impeller within the cavity, a sensor that senses an axial position of the impeller within the cavity and a controller. The controller includes an electronic processing device that, in response to a change in axial hydraulic forces on the impeller determines an axial position of the impeller within the cavity, determines a reference power in accordance with the determined axial position and controls the magnetic bearing to cause the impeller to move until a bearing power indicator indicative of the power used by the magnetic bearing reaches the reference power.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: March 30, 2021
    Assignee: BiVACOR Inc.
    Inventors: Frank Nestler, Nicholas Greatrex, Daniel Timms, Matthias Kleinheyer
  • Patent number: 10920771
    Abstract: A pump drive for conveying a reducing agent for motor vehicle exhaust gas systems, with an electronically commutated direct current motor, a positive displacement pump, and a freezing compensation structure. Also, a modular motor and pump family for forming different pump drives with several such electric motors and pumps. It is the aim of the invention to ensure, in the simplest and most robust manner possible, the integration of a hydraulic unit (gear pump) into an electrical unit (electric motor), a sealing of a wet region from a dry region, an integration of a freezing compensation into the wet region, and a mechanical attachment on the customer side. A modular construction of the electric motor and of the positive displacement pump, which, without a large modification cost, via simple combination of assemblies or modules, can be used for different requirements, is important for this.
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: February 16, 2021
    Assignee: BÜHLER MOTOR GMBH
    Inventor: Karl-Heinz Böhm
  • Patent number: 10918774
    Abstract: A heart assist device comprising a rotary pump housing having a cylindrical bore, a pumping chamber and a motor stator including an electrically conductive coil located within the housing and surrounding a portion of the cylindrical bore. A rotor has a cylindrical shaft with an impeller and one or of magnets located within the shaft that are responsive to the motor stator to drive actuation of the rotor. The housing bore is closely fitted to the outer surface of the shaft forming a hydrodynamic journal bearing with an annular clearance defining a leakage flow path. One or more of radial or axial thrust bearings may be provided to provide rotation stability to the rotor and flow within the leakage flow path. The relative orientation of positions of the inflow, outflow, and leakage flow paths may be varied within the pump, such as to accommodate different intended methods for implantation and/or use.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: February 16, 2021
    Assignee: VADOVATIONS, INC.
    Inventors: J. Ryan Stanfield, Michael Vladovich
  • Patent number: 10876534
    Abstract: A combined pump and motor has a stator mounted for non-rotation in a housing. The stator has windings that create an electromagnetic field in the stator cavity when powered. An upper diffuser and a lower diffuser are mounted for non-rotation in the stator cavity. Annular clearances exist between the upper diffuser and the inner diameter of the stator and between the lower diffuser and the inner diameter of the stator. An impeller between the lower diffuser and the upper diffuser has an array of magnets circumferentially mounted around the impeller that impart rotation to the impeller in response to the electromagnetic field in the stator cavity. The array of magnets has at least one end portion extending into one of the upper and lower diffuser annular clearances.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: December 29, 2020
    Assignee: Baker Hughes, a GE Company, LLC
    Inventors: Nikolas Davis, Zheng Ye, Ameen Muhammed, Carroll Dearman, Gary Williams
  • Patent number: 10781828
    Abstract: A rotary assembly for a centrifugal pump includes a housing, an impeller, a first opening formed in one of the housing or the impeller, a first bushing disposed in the first opening, and a first shaft projection projecting axially from one of the housing or the impeller. The first bushing extends annularly around a central opening thereof and is formed from an elastomeric material. The first shaft projection is received within the central opening of the first bushing. One of the first shaft projection or the first bushing is configured to rotate relative to the other of the first shaft projection or the first bushing during operation of the centrifugal pump.
    Type: Grant
    Filed: September 12, 2018
    Date of Patent: September 22, 2020
    Assignee: HANON SYSTEMS
    Inventors: Brian Graichen, David Crowther, Jean-Claude Cadoret
  • Patent number: 10724534
    Abstract: A blood pump includes a housing and a rotor within the housing configured to rotate along an axis. The rotor may include a hub, the hub having regions with blades and regions without blades. The regions without blades may have a constant outer diameter and may extend along at least one fourth the length of the hub. The regions with blades may have an increasing outer diameter. Blades may be disposed on a downstream end region of the hub and extend downstream of the hub. Blades may begin approximately halfway along the axial length of a motor stator located about a hub and extend downstream of the motor stator. Blades may have portions that produce axial fluid flow and radial fluid flow with improved flow characteristics.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: July 28, 2020
    Assignee: TC1 LLC
    Inventors: Yi-Ren Woo, Onur Dur, Steven H. Reichenbach
  • Patent number: 10697463
    Abstract: A jet propulsion device includes an impeller housing, an impeller, a sleeve, a first ring-shaped elastic body, and a second ring-shaped elastic body. The first ring-shaped elastic body is disposed between the impeller housing and the sleeve, and is located between a first end and a middle of the sleeve in an axial direction of the sleeve. The second ring-shaped elastic body is disposed between the impeller housing and the sleeve, and is located between a second end and the middle of the sleeve in the axial direction of the sleeve.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: June 30, 2020
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Atsushi Morie, Mitsuyoshi Nakamura, Minoru Sato
  • Patent number: 10605492
    Abstract: A refrigeration cycle device includes at least a condenser, an expansion valve, an evaporator and a plurality of compressors, a sealed casing of each of the compressors is disposed with a rotary compression mechanism part in communication with a low-pressure path and a motor part configured to drive the compression mechanism part, the low-pressure path is in communication with the evaporator, each of the compressors is further provided with an oil storage cavity, and a gas discharge path of at least one compressor is connected with the sealed casing of another compressor.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: March 31, 2020
    Assignee: Guangdong Meizhi Compressor Co., Ltd.
    Inventors: Masao Ozu, Weimin Xiang, Jijiang Yu, Hong Guo, Cheng Zhang, Ziqiang Liang, Ling Wang, Liang Zhong, Lili Yan
  • Patent number: 10549019
    Abstract: A blood pump casing including a unitary body. The unitary body defines an inlet chamber extending along a first axis and having a first radius perpendicular to the first axis. A transition chamber is connected to the inlet chamber and has a wall extending in a circumferential direction around the first axis, the wall has a major radius and a minor radius from the first axis, the major radius being greater than the first radius. A post extends from the transition chamber into the inlet chamber along the first axis, the post tapers in the direction around the first axis toward the inlet chamber. An outlet is connected to the transition chamber and extends along a second axis transverse to the first axis.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: February 4, 2020
    Assignee: HeartWare, Inc.
    Inventors: Charles R. Shambaugh, Mustafa Ertan Taskin
  • Patent number: 10480506
    Abstract: A conical screw compressor or pump comprises an inner element configured to rotate around a first axis and an outer element configured to rotate around a second axis. An outer surface of the inner element and an inner surface of the outer element comprise cooperating grooves and teeth that intermesh on rotation. The first axis and the second axis are each stationary and the first axis is inclined relative to the second axis. The inner element and the outer element are configured to be, in operation, synchronously rotated, thereby to reduce or eliminate force exerted by the inner element on the outer element or vice versa.
    Type: Grant
    Filed: February 18, 2015
    Date of Patent: November 19, 2019
    Assignee: Vert Rotors UK Limited
    Inventors: Oleg Dmitriev, Evgeniy Tabota
  • Patent number: 10447104
    Abstract: A spindle structure capable of accelerating the flow of a fluid in through holes of a rotor. The spindle structure includes a rotatable rotation part. The rotation part includes a tool holding part provided at an axial direction one end of the rotation part and through holes that penetrate the rotation part and open at the end in the axial direction. Further the spindle structure includes a vane provided in the through holes. When the rotation part rotates, the vane rotates with the rotation part to allow a fluid in the interior of the through holes to flow toward the end in the axial direction.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: October 15, 2019
    Assignee: FANUC CORPORATION
    Inventor: Yohei Kamiya
  • Patent number: 9943630
    Abstract: A rotor for an axial-flow blood pump has blades projecting outwardly from a hub and channels between the blades. The blades incorporate hydrodynamic bearing surfaces capable of suspending the rotor during operation. The rotor has a configuration which provides superior pumping action and reduced shear of blood passing through the pump. The forwardly facing pressure surfaces of the blades may include outflow corner surface at their downstream ends. The outflow corner surfaces desirably slope rearwardly and intersect the rearwardly-facing suction surfaces of the blades at outflow ends of the blades.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: April 17, 2018
    Assignee: HeartWare, Inc.
    Inventor: Mustafa Ertan Taskin
  • Patent number: 9901666
    Abstract: Methods and apparatus for estimating flow rate in a blood circulation assist system employing impeller eccentricity. A method includes magnetically rotating an impeller within a blood flow channel of a blood pump. The impeller is levitated within the blood flow channel transverse to the impeller axis of rotation. A rotational speed for the impeller is determined. At least one impeller transverse position parameter is determined. The at least one impeller transverse position parameter is based on at least one of (1) an amount of a bearing current that is used to levitate the impeller transverse to the impeller axis of rotation, and (2) a position of the impeller within the blood flow channel transverse to the impeller axis of rotation. A flow rate of blood pumped by the blood pump is estimated based on the impeller rotational speed and the at least one impeller transverse position parameter.
    Type: Grant
    Filed: July 19, 2016
    Date of Patent: February 27, 2018
    Assignee: TC1 LLC
    Inventor: Christopher J. Cotter
  • Patent number: 9771801
    Abstract: The invention relates to a rotor for a pump, having at least one blade, the rotor being able to be actuated to rotate about an axis of rotation in order to convey a fluid in the axial or radial direction, the rotor being able to be deformed reversibly elastically in the radial direction between a first, radially compressed state and a second, radially expanded state which the rotor adopts without the effect of external forces, and a third state of the rotor being provided in which, in pumping operation under fluid loading, the rotor is deformed from the first state to beyond the second state.
    Type: Grant
    Filed: July 1, 2011
    Date of Patent: September 26, 2017
    Assignee: ECP ENTWICKLUNGSGESELLSCHAFT MBH
    Inventors: Joerg Schumacher, Mario Scheckel
  • Patent number: 9707327
    Abstract: An implantable heart assist system, includes a pumping chamber formed of a flexible material and being adapted to be placed in fluid connection with the aorta and a pump system comprising a first rigid member and a spaced apart second rigid member so that at least a portion of the pumping chamber may be positioned therebetween, a drive system comprising a motor. The motor is adapted to cause the second rigid member to move toward the first rigid member to compress the pumping chamber or away from the first rigid member to expand the pumping chamber. A controller is in operative connection with the drive system and controlling the motor.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: July 18, 2017
    Assignee: VASCOR, INC.
    Inventors: Marlin S. Heilman, Charles R. Kohler, David M. Reilly, Jon D. Wagner, Kurt D. Badstibner, Richard A. Bates, Jonathan R. Speicher, Joseph F. Russial
  • Patent number: 9577494
    Abstract: A motor includes a casing having a cavity, a stator configured to be attached to an inside of the cavity, an elastic cone configured to be attached to a first end of the casing, a rigid cone configured to be attached to a second end of the casing that is opposite to the first end, a non-metallic part configured to be attached to the elastic cone and the rigid cone, and a rotor provided inside the cavity and configured to rotate inside the stator. The casing, the elastic cone, the rigid cone, and the non-metallic part form a hermetic enclosure in which the entire stator is enclosed and the hermetic enclosure is configured to hold a cooling fluid that cools the stator and also to prevent the cooling fluid to reach the rotor.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: February 21, 2017
    Assignee: Nuovo Pignone SPA
    Inventors: Luciano Mei, Massimo Pinzauti
  • Patent number: 9561313
    Abstract: A rotor for an axial-flow blood pump has blades projecting outwardly from a hub and channels between the blades. The blades incorporate hydrodynamic bearing surfaces capable of suspending the rotor during operation. The rotor has a configuration which provides superior pumping action and reduced shear of blood passing through the pump. The forwardly facing pressure surfaces of the blades may include outflow corner surface at their downstream ends. The outflow corner surfaces desirably slope rearwardly and intersect the rearwardly-facing suction surfaces of the blades at outflow ends of the blades.
    Type: Grant
    Filed: August 14, 2014
    Date of Patent: February 7, 2017
    Assignee: HeartWare, Inc.
    Inventor: Mustafa Ertan Taskin
  • Patent number: 9410549
    Abstract: In this centrifugal blood pump apparatus, one permanent magnet is provided in one surface of an impeller, a second permanent magnet is provided in an inner wall of a blood chamber, a third permanent magnet is provided in the other surface of the impeller, and a fourth permanent magnet and a rotor for driving the impeller to rotate are provided, with an diaphragm being interposed. An amount of change in attractive force between the first permanent magnet and the second permanent magnet and an amount of change in attractive force between the third and fourth permanent magnets when the impeller is eccentric are made substantially equal to each other. Therefore, a levitation position of the impeller can always be maintained at a substantially central position in a housing.
    Type: Grant
    Filed: May 27, 2014
    Date of Patent: August 9, 2016
    Assignee: Thoratec Corporation
    Inventors: Takayoshi Ozaki, Hiroyuki Yamada, Kenichi Suzuki, Ken Sugiura
  • Patent number: 9397537
    Abstract: A cooling assembly for the stator of an electric machine provided with coils including heads is described herein. The cooling assembly includes a generally cylindrical cooling body provided with opposite longitudinal ends and at least one head-cooling element mounted to one of the longitudinal end of the body; the head-cooling element being so configured as to enclose heads of the coils and to receive heat conducting material therein.
    Type: Grant
    Filed: November 6, 2012
    Date of Patent: July 19, 2016
    Assignee: TM4 INC.
    Inventors: Stéphane Poulin, Bruno Carpentier, Benjamin Martineau
  • Patent number: 9370613
    Abstract: An axial-flow blood pump has a rotatable impeller assembly rotatable about an axis and itself having a radially projecting blade and permanent magnets, A stationary stator assembly has stator windings interacting with the permanent magnets and a bearing system supporting the rotatable impeller assembly for rotation about the axis relative to the stator assembly. A stent implantable into a blood vessel is connected to ends of supports for coaxially mounting the stator assembly carrying the impeller assembly in the stent.
    Type: Grant
    Filed: July 17, 2013
    Date of Patent: June 21, 2016
    Assignee: RHEINISCH-WESTFAELISCHE-TECHNISCHE HOCHSCHULE AACHEN
    Inventors: Po-Lin Hsu, Ulrich Steinseifer, Jack Parker, Ruediger Autschbach
  • Patent number: 9308304
    Abstract: A blood pump includes a hollow body in which an impeller with blading is provided for producing an axial propulsion of blood along the impeller. An at least partly actively stabilized magnetic bearing device is provided wherein the impeller may be set into a rotation about a rotation axis of the impeller, with a motor stator. The hollow body has an inlet for the flow of blood into the hollow body in an inflow direction which is essentially parallel to the rotation axis, and an outlet for the outflow of the blood out of the hollow body in an outflow direction.
    Type: Grant
    Filed: May 5, 2011
    Date of Patent: April 12, 2016
    Assignee: Berlin Heart GmbH
    Inventors: Hans-Erhard Peters, Jörg Müller, Kurt Graichen, Peter Nüsser, Manfred Göllner, Andreas Arndt, Leonid Choub
  • Patent number: 9180235
    Abstract: The present invention relates to a heart pump apparatus comprising a turbine pump for assisting the heart of a human patient. The invention is based on the realization that a turbine without a center axis would improve the capacity of the heart help pump apparatus. The present invention also relates to a turbine pump system for assisting the heart of a human patient. The present invention also relates to operation methods and methods for surgically placing a rotating body of a turbine pump and a stator of a turbine pump in a patient.
    Type: Grant
    Filed: October 12, 2009
    Date of Patent: November 10, 2015
    Inventor: Peter Forsell
  • Patent number: 9181947
    Abstract: A compressor is provided in which a rotary member suspended on a stationary member is rotated to compress a refrigerant. As the rotary member is suspended on a first stationary member and rotatably supported on a second stationary member spaced apart from the first stationary member, components can be easily centered and assembled with structural stability. In addition, oil stored in a hermetic container is supplied to a lubrication passage provided between the rotary member and the stationary member. This reduces friction loss between the components and achieves operational reliability. Moreover, the oil is easily introduced into a vane mounting hole in which a vane is linearly reciprocated. This reduces friction and abrasion of the vane and improves the operational reliability.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: November 10, 2015
    Assignee: LG ELECTRONICS INC.
    Inventors: Kang-Wook Lee, Jin-Ung Shin, Geun-Hyung Lee, Seoung-Min Kang
  • Patent number: 9163679
    Abstract: A magnetic powder brake device of a motor used for oil production is provided. The motor has a turning shaft and an oil extraction pump, and is coupled with a magnetic powder brake. The magnetic powder brake is connected with an electromagnetic switch and a battery. The electromagnetic switch is provided with a power sensor and connected with a power source. When the motor is turned under a normal power supply, the electromagnetic switch is in a disconnection state and the battery doesn't supply power to the magnetic powder brake, so the turning shaft is not braked by the magnetic powder brake. In case of an unexpected power failure, the electromagnetic switch is in a connection state, the battery supplies power to the magnetic powder brake, and the magnetic powder brake is activated to brake the turning shaft, preventing the turning shaft from turning reversely.
    Type: Grant
    Filed: June 17, 2014
    Date of Patent: October 20, 2015
    Inventor: Yen-Hong Wong
  • Patent number: 9162019
    Abstract: A pump includes a housing, a stator supported in the housing, and a rotor assembly including a rotor supported in the housing for rotation relative to the stator about an axis. The stator includes a stator core, a first lamination wound around an axial portion of the stator core, and a second lamination wound around a second axial portion of the stator core. The first and second laminations are spaced from each other along the length of the stator core. The rotor includes a rotor core, a first magnet assembly that extends around an axial portion of the rotor core, and a second magnet assembly that extends around a second axial portion of the rotor core. The first and second magnet assemblies are spaced from each other along the length of the rotor.
    Type: Grant
    Filed: July 2, 2012
    Date of Patent: October 20, 2015
    Assignee: The Cleveland Clinic Foundation
    Inventors: David Horvath, Leonard A. R. Golding, Alex Massiello, Barry Kuban
  • Patent number: 9039390
    Abstract: A compressor is provided in which a rotary member suspended on a stationary member is rotated to compress a refrigerant. The rotary member is suspended on a first stationary member and rotatably supported on a second stationary member spaced apart from the first stationary member, to thereby achieve structural stability, improve operation reliability, and reduce vibration. The components can be easily centered and assembled with an excellent assembly property. In addition, a mounting structure of an elastically-supported vane is improved to ensure lubrication performance and operation reliability. Moreover, a mounting structure of a roller-incorporated vane is improved to reduce vibration and prevent refrigerant leakage, which leads to high compression efficiency.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: May 26, 2015
    Assignee: LG ELECTRONICS INC.
    Inventors: Kang-Wook Lee, Jang-Woo Lee, Bum-Dong Sa, Jin-Ung Shin
  • Patent number: 8915725
    Abstract: A compressor is provided having an accumulator that forms an accumulating chamber in an internal space of a shell of the compressor, reducing a size and simplifying an assembly process. A stationary shaft having a refrigerant suction passage may be directly connected to the accumulator to prevent leakage of refrigerant. A center of gravity of the accumulator may correspond to a center of gravity of the compressor to reduce vibration caused by the accumulator. An eccentric portion may be provided at the stationary shaft to secure a spacious compression space. Both ends of the stationary shaft may be supported by a frame to reduce vibration. A rotor and a cylinder may be coupled with a bearing to reduce cylinder deformation. An installation area of the compressor may be minimized to enhance design flexibility of an outdoor device employing the compressor and minimize interference with other components.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: December 23, 2014
    Assignee: LG Electronics Inc.
    Inventors: Kangwook Lee, Bumdong Sa
  • Patent number: 8899947
    Abstract: A compressor is provided having an accumulator that forms an accumulating chamber in an internal space of a shell of the compressor, reducing a size of the compressor and simplifying an assembly process. A stationary shaft having a refrigerant suction passage may be directly connected to the accumulator to prevent leakage of refrigerant. Further, a center of gravity of the accumulator may correspond to a center of gravity of the compressor to reduce vibration noise of the compressor caused by the accumulator. Furthermore, both ends of the stationary shaft may be supported by a frame to reduce compressor vibration without using a separate bearing. An installation area of the compressor including the accumulator may be minimized to enhance design flexibility of an outdoor device employing the compressor and minimize interference with other components, thereby facilitating installation of the outdoor device.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: December 2, 2014
    Assignee: LG Electronics Inc.
    Inventors: Kangwook Lee, Bumdong Sa
  • Patent number: 8894388
    Abstract: A rotary compressor is provided that includes an electric motor that supplies electric power and a compression mechanism that compresses a refrigerant while first and second rotary members rotate upon receipt of the electric power from the electric motor. More particularly, the compressor has a compact design by forming a compression space within the compressor by a rotor of the electric motor that drives the compressor, maximizes compression efficiency by minimizing friction loss between rotating elements within the compressor, and has a structure that minimizes leakage of the refrigerant within the compression space.
    Type: Grant
    Filed: November 28, 2008
    Date of Patent: November 25, 2014
    Assignee: LG Electronics Inc.
    Inventors: Kangwook Lee, Jin-Ung Shin, Yongchol Kwon, Geun-Hyoung Lee
  • Patent number: 8876494
    Abstract: A compressor is provided that includes a stator, a cylinder type rotor rotated within the stator by a rotating electromagnetic field of the stator and that defines a compression chamber inside, a roller that rotates within the compression chamber of the cylinder type rotor by a rotational force transferred from the rotor and compresses a refrigerant during rotation, a vane that divides the compression chamber into a suction region, into which the refrigerant is sucked, and a compression region, in which the refrigerant is compressed and discharged from, and transfers the rotational force from the cylinder type rotor to the roller, an axis of rotation that integrally extends from the roller in an axial direction, and a suction passage, through which the refrigerant is sucked into the compression chamber, through the axis of rotation and the roller.
    Type: Grant
    Filed: November 27, 2008
    Date of Patent: November 4, 2014
    Assignee: LG Electronics Inc.
    Inventors: Kangwook Lee, Jin-Ung Shin, Yongchol Kwon, Geun-Hyoung Lee
  • Patent number: 8876644
    Abstract: The pump unit has a pump and a hybrid drive. The pump comprises a pump housing and a pump shaft. The hybrid drive comprises an electric motor and a driveshaft connection to a driveshaft. The electric motor and the driveshaft connection are each in driving mechanical functional connection with the pump shaft by way of a planetary gearset for driving the pump shaft. A stator of the electric motor is at least partially integrated in the pump housing. A rotor of the electric motor is mechanically connected fixed to a sun gear of the planetary gearset. The driveshaft connection is mechanically connected fixed to a ring gear of the planetary gearset. The pump shaft is mechanically connected fixed to a planetary carrier of the planetary gearset.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: November 4, 2014
    Assignee: ZF Friedrichshafen AG
    Inventors: Gernot Riegert, Raphael Zwick, Mario Harscher
  • Patent number: 8858205
    Abstract: A compressor is provided in which a rotary member suspended on a stationary member is rotated to compress a refrigerant. The rotary member is suspended on a first stationary member and rotatably supported on a second stationary member spaced apart from the first stationary member, which achieves the structural stability and allows the components to be easily centered and assembled. A refrigerant suction passage and a refrigerant discharge passage are such that the refrigerant may be sucked and discharged without a valve.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: October 14, 2014
    Assignee: LG Electronics Inc.
    Inventors: Kang-Wook Lee, Bum-Dong Sa
  • Patent number: 8851942
    Abstract: A thrust generating apparatus which is positioned under water and configured to generate a thrust by ejecting water includes a duct-shaped stator provided with a plurality of armature coils, and a plurality of ring-shaped rotors which are arranged radially inward of the stator and provided with permanent magnets respectively corresponding to the plurality of armature coils, wherein the plurality of rotors are arranged in series in a rotational axis direction thereof and each of the rotors has a propeller vane protruding radially inward. A thrust generating apparatus is capable of outputting a high driving power without increasing a propeller diameter.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: October 7, 2014
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Keiichi Yoshikawa, Hiromitsu Kiyose, Tetsuro Ikebuchi
  • Patent number: 8840378
    Abstract: A thrust generating apparatus is configured to generate thrust by ejecting water. The thrust generating apparatus includes: a first water lubricated bearing opposed to one side surface and outer peripheral surface of rotor main body and supports a thrust and radial load; a second water lubricated bearing opposed to the other side surface and outer peripheral surface of rotor main body and supports the thrust and radial load; a first water intake port that opens toward a portion of a channel; a second water intake port that opens toward another portion of the channel; a first water conveyance tube through which the water having flowed through the first water intake port is guided to the second water lubricated bearing; and a second water conveyance tube through which the water having flowed through the second water intake port is guided to the first water lubricated bearing.
    Type: Grant
    Filed: June 18, 2010
    Date of Patent: September 23, 2014
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Masahito Tanaka, Hiromitsu Kiyose, Tetsuro Ikebuchi, Kentaro Nakagawa