Patents Examined by Alex W. Mok
  • Motor, rotor, compressor, and refrigeration and air conditioning apparatus
    Patent number: 11018535
    Abstract: A motor includes a stator and a rotor provided inside the stator. The rotor includes a rotor core having a magnet insertion hole and two permanent magnets disposed in the magnet insertion hole. The rotor core has a first magnet holding portion disposed between the two permanent magnets and holding the two permanent magnets, an opening disposed on an inner side of the first magnet holding portion in a radial direction of the rotor core, and a center hole disposed at a center of the rotor core in the radial direction. A distance from the opening to the magnet insertion hole is shorter than a distance from the opening to the center hole.
    Type: Grant
    Filed: November 2, 2015
    Date of Patent: May 25, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masahiro Nigo, Yuji Hirosawa, Ryukichi Kijima
  • Rotor for rotary electric machine and vehicle drive device including the rotor for rotary electric machine
    Patent number: 11005318
    Abstract: A rotor for a rotary electric machine, the rotor including: a rotor core; a rotor shaft having a tubular shape, passing through a radially inner side of the rotor core to be coupled to the rotor core, and extending along an axial direction; an oil supply path that supplies oil to the rotor shaft, a portion to be lubricated that is disposed on a first axial side with respect to the rotor core, wherein one side in the axial direction is defined as the first axial side and another side in the axial direction is defined as a second axial side; and a lubrication oil path through which oil is supplied to the portion to be lubricated.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: May 11, 2021
    Assignees: AISIN AW CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroki Nakane, Takefumi Komaki, Masayuki Ikemoto, Yoshinari Nakagawa, Minoru Anai, Shinya Sano
  • Variable flux bridge for rotor of an electric machine
    Patent number: 11005320
    Abstract: An electric machine includes a rotor including a channel defined between a pair of magnets and a bridge assembly within the channel. The bridge assembly includes a bridge element and a spring arranged to bias the bridge element toward a center of the rotor such that responsive to spinning of the rotor, the bridge element moves radially away from the center against a force of the spring to alter a magnetic flux pattern associated with the magnets.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: May 11, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Jacob Krizan, Joel Hetrick
  • Magnetic bearing assembly for rotating machinery
    Patent number: 11005336
    Abstract: A rotating machine includes a housing, a rotor shaft to rotate about a longitudinal axis, a position sensor to detect a position of the rotor shaft within the housing, and a magnetic bearing assembly coupled to the housing to support the rotor shaft within the housing. The magnetic bearing assembly includes an active magnetic bearing for active support of the rotor shaft, such as a thrust bearing actuator to produce an axial force component that is parallel to the central longitudinal axis and a radial force component that is orthogonal to the central longitudinal axis and axially offset from the thrust bearing actuator. The magnetic bearing assembly also includes a passive magnetic radial bearing to radially support the rotor shaft within the housing. A controller electrically coupled to the active magnetic bearing controls a control current to the active magnetic bearing.
    Type: Grant
    Filed: April 28, 2020
    Date of Patent: May 11, 2021
    Assignee: Calnetix Technologies, LLC
    Inventors: Rasish Khatri, Venky Krishnan, John Stout, Larry Hawkins
  • Motor
    Patent number: 10992198
    Abstract: A motor includes a stator including a stator core and teeth respectively protruding from the stator core, and coils respectively wound onto the teeth n (n is an integer of 3 or greater) turns. In a cross section in a first direction representing each of directions of protrusion of the teeth from the stator core, a k-th (k is an integer, 1<k<n) turn of each of the coils lies at a center of a range wound with each of the coils onto the teeth in the first direction. The k-th turn of each of the coils is greater in cross-sectional area than each of a first turn and an n-th turn.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: April 27, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD
    Inventors: Yuichi Yoshikawa, Keiichiro Nukada, Yasushi Kato, Hirokazu Yamauchi, Mitsuoki Hishida
  • Linear vibration motor
    Patent number: 10992214
    Abstract: A linear vibration motor includes: a housing having a receiving space; a vibrator unit received in the housing; and a stator configured to drive the vibrator unit to vibrate. The vibrator unit includes at least two vibrators arranged along a vibrating direction and spaced apart from each other. Two adjacent vibrators of the at least two vibrators are connected by an elastic holder; the elastic holder includes a first fixed portion, two second fixed portions respectively located at two sides of the first fixed portion, and two deformation portions connecting the first fixed portion with the second fixed portion; the first fixed portion is fixed to the housing; and the two second fixed portions are respectively fixed to the two adjacent vibrators. The linear vibration motor can provide rigidity support to the vibrators.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: April 27, 2021
    Assignee: AAC ACOUSTIC TECHNOLOGIES (SHENZHEN) CO., LTD.
    Inventors: Yun Tang, Lubin Mao
  • Electrical machine with cooling channel
    Patent number: 10938266
    Abstract: An electrical machine comprises a polymeric housing formed by a polymeric material and constructed to house components of the electrical machine, structurally support the electrical machine and react torque loads generated by the electrical machine; a stator overmolded into and partially encapsulated by the polymeric housing, the stator including a laminated stator core and a plurality of stator windings, the stator windings including a winding overhang extending from the laminated stator core; a rotor in magnetic communication with the stator; and a cooling channel disposed within the polymeric material forming the housing and encapsulated by the polymeric material and positioned adjacent to the laminated stator core, wherein the cooling channel is constructed to pass a fluid for cooling the electrical machine.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: March 2, 2021
    Assignee: ABB Schweiz AG
    Inventors: Colin E. Tschida, Sheng Zhong, Darren D. Tremelling, Dariusz Bednarowski
  • Linear vibration motor
    Patent number: 10931186
    Abstract: Disclosed is a linear vibration motor, including a base, a cover plate, a vibration unit, and a drive unit. The vibration unit includes a counterweight block and a magnetic steel. An accommodating groove is provided in the counterweight block. At least two pieces of magnetic steel are respectively located on two opposite sides of the accommodating groove. The drive unit includes an iron core accommodated in the accommodating groove and fixed on the base and two first coils and two second coils that are respectively fixedly sleeved over the iron core. The two second coils and two pieces of magnetic steel are together circumferentially disposed in the accommodating groove and are arranged alternately.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: February 23, 2021
    Assignee: AAC Acoustic Technologies (Shenzhen) Co., Ltd.
    Inventors: Yun Tang, Lubin Mao
  • Rotor core, rotor and motor
    Patent number: 10923974
    Abstract: A rotor core includes first and second laminate steel plates extending in a radial direction with respect to a central axis. The first laminate steel plate includes a first base portion positioned on a radially outer side of the central axis, and pieces separately positioned on a radially outer side of the first base portion with penetrating portions therebetween, and disposed at predetermined intervals in a circumferential direction. The second laminated steel sheet includes a second base portion positioned on a radially outer side of the central axis, and annular portions separately disposed on a radially outer side of the second base portion with penetrating portions therebetween, and extending in a circumferential direction. The rotor core is defined by the first laminate steel plates and at least one of the second laminate steel plates laminated in an axial direction.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: February 16, 2021
    Assignee: NIDEC CORPORATION
    Inventors: Takayuki Migita, Takeshi Honda, Hirofumi Muto, Osamu Fujimoto, Hiroshi Kitagaki, Yasuaki Nakahara
  • Voice coil motor
    Patent number: 10914914
    Abstract: A VCM (voice coil motor) is disclosed, the VCM including: a rotor including a lens-accommodating, both ends opened cylindrical bobbin and a coil block including a coil wound on a periphery of the bobbin; a stator including a cylindrical yoke formed with a lens-exposing opening, a plurality of magnets disposed inside the yoke and opposite to the coil block, and a housing disposed inside the yoke to fix the plurality of magnets; and an elastic member elastically supporting the bobbin.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: February 9, 2021
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Seongmin Lee, Sangok Park, Sangjun Min, Kyoungho Yoo, Taejin Jung, Taemin Ha, Seungki Kim
  • Magnetic shield for a superconducting generator
    Patent number: 10910920
    Abstract: An annular rotating armature is presented. The annular rotating armature includes an armature winding having a plurality of coils, an armature support structure and a magnetic shield disposed between the armature winding and the armature support structure. The magnetic shield having a first magnetic shield ring, a second magnetic shield ring disposed concentric to the first magnetic shield ring and coupled to the first magnetic shield ring via a magnetic shield bridge link. An air gap is formed between the first magnetic shield ring and the second magnetic shield ring. The magnetic shield bridge link is disposed within the air gap. A superconducting generator including the annular rotating armature and a wind turbine having such superconducting generator are also presented.
    Type: Grant
    Filed: May 1, 2019
    Date of Patent: February 2, 2021
    Assignee: General Electric Company
    Inventors: David Allan Torrey, Nidhishri Tapadia, Joseph Zierer, Anbo Wu
  • Fluid cooled and fluid insulated electric machine
    Patent number: 10910916
    Abstract: An electric machine comprising a rotor, a stator, a plurality of bare conductors forming a plurality of windings in at least one of the stator and the rotor, and a fluid in direct physical contact with a plurality of outer surfaces of the plurality of bare conductors, wherein the fluid is electrically insulating and provides direct fluid cooling, to provide cooling for the plurality of bare conductors and electrical insulation between consecutive bare conductors of the plurality of bare conductors.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: February 2, 2021
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Anoop Kumar Jassal, Mohamed Osama, Francesco Papini, Narendra Digamber Joshi
  • Actuator for subsea and wet environments
    Patent number: 10888994
    Abstract: A compact, high torque actuator includes a brushless motor, motor control electronics, an inner hollow tube to transmit rotation of an output plate to the input end of the actuator, thus allowing two absolute magnetic encoders to read an absolute position of the input and output of the actuator. The actuator is sealed to operate in fluid environment at high pressures.
    Type: Grant
    Filed: May 2, 2019
    Date of Patent: January 12, 2021
    Assignee: CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Matthew Gildner, Justin R Koch, Torkom A Pailevanian
  • Electric machine with direct winding heat exchanger
    Patent number: 10886819
    Abstract: According to various aspects disclosed herein, exemplary embodiments of an electric machine with direct winding heat exchange is disclosed, including a stator, a rotor, at least one coil positioned on a stator tooth of the stator, with the coil comprising one or more turns of a conductor and an insulator, where the insulator and coil form a monolithic body having at least one facet at an angle that corresponds to the geometry of a stator slot of the stator.
    Type: Grant
    Filed: March 13, 2018
    Date of Patent: January 5, 2021
    Inventors: J. Rhett Mayor, S. Andrew Semidey
  • Electric linear actuator
    Patent number: 10886808
    Abstract: Provided is an electric linear actuator that enables reduction of the mounting space and reduction of costs. An electric motor of this electric linear actuator is an axial gap motor including a stator and a rotor which are disposed such that orientations of magnetic poles which generate interlinkage flux which contributes to torque generation are parallel to the rotation axis of the electric motor. Further, a linear motion mechanism and the electric motor are disposed in line along the same axis which serves as the axis of a rotation input and output shaft of the linear motion mechanism. First and second coil terminals have extended portions extended in the outer-diameter side in the radial direction with respect to the rotation axis, and the extended portions are electrically connected to a control device through a wiring mechanism.
    Type: Grant
    Filed: January 7, 2019
    Date of Patent: January 5, 2021
    Assignee: NTN CORPORATION
    Inventor: Yui Masuda
  • Interior permanent magnet synchronous machine
    Patent number: 10873227
    Abstract: An interior permanent magnet synchronous machine includes a stator having electromagnetic windings and a rotor that is disposed concentric with the stator. The rotor has a plurality of rotor segments that include a first rotor segment and a second rotor segment. The first rotor segment is arranged to receive a first magnet set having first magnets that are disposed at a first pole-arc angle relative to each other. The second rotor segment is axially stacked relative to the first rotor segment along a rotor axis. The second rotor segment is arranged to receive a second magnet set having second magnets that are disposed at a second pole-arc angle relative to each other. The second pole-arc angle is different than the first pole-arc angle.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: December 22, 2020
    Assignee: Steering Solutions IP Holding Corporation
    Inventors: Subhra Paul, Alejandro J. Pina Ortega
  • Linear vibration motor
    Patent number: 10873250
    Abstract: The present disclosure provides a linear vibration motor, including a base having a receiving space, a vibration unit located in the receiving space, an elastic member fixed to the base and suspending the vibration unit in the receiving space, and a coil fixed to the base and opposite to and spaced away from the vibration unit. The vibration unit includes a magnet, the magnet is opposite to and spaced away from the coil, the coil includes a first coil for connecting an electric signal and a second coil insulated from the first coil, and both ends of the second coil are connected to each other to form a closed loop. Compared with the related art, the linear vibration motor in the present disclosure has high reliability.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: December 22, 2020
    Assignee: AAC Technologies Pte. Ltd.
    Inventors: Fanghua Ling, Xiaofeng Pu, Tao Zhang, Jinquan Huang
  • PSC motor having multiple pole configurations for use in at least two different air moving devices
    Patent number: 10868460
    Abstract: A permanent split capacitor (PSC) motor includes a stator defining an axis of rotation and a rotor disposed adjacent the stator. The stator includes a start winding, a capacitor electrically coupled in series with the start winding, a first plurality of windings, and a second plurality of windings. The motor includes first and second sets of electrical leads connected respectively to the first plurality of windings and to the second plurality of windings, the first plurality of windings and the second plurality of windings respectively configurated to rotate the motor respectively at a first and second rotational speeds of the motor when mounted respectively to the first machine and to the second machine.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: December 15, 2020
    Assignee: Regal Beloit America, Inc.
    Inventors: Andrea Lena Nelson, Matthew Ryan Logan, Harry Robert Wilson, Bryan James Stout, Lester Benjamin Manz, John Sheldon Wagley
  • Drive device
    Patent number: 10859098
    Abstract: The present invention provides a drive device including a drive motor. The drive motor includes an end cover, a motor housing, a stator, a rotor, a motor shaft, and a bearing. The drive motor further includes a casing and a first heat-dissipating fan used for dissipating heat for the motor housing. The casing is fixedly mounted on a side of the end cover to contain the motor housing into a chamber formed by the casing. The casing and the motor housing are spaced apart at certain intervals to form a gap between the casing and the motor housing for air flow to pass through. The first heat-dissipating fan is connected to the end of the motor shaft away from the end cover to rotate with the motor shaft. The casing is provided with an air inlet and an air outlet for air flow to pass through.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: December 8, 2020
    Assignee: Zhejiang Dongxin iTechnology Co., Ltd.
    Inventors: Fengping Zhou, Xinjiang Zhou, Guoyao Wu, Xiaoke Zhou, Dong Chen
  • Driving apparatus for vehicle
    Patent number: 10862372
    Abstract: A driving apparatus for a vehicle is disclosed. The driving apparatus is used for transmitting drive force to a first output shaft. The driving apparatus includes a housing, a motor, a torque converter and an oil reservoir unit. The housing includes a first oil chamber and a second oil chamber. The motor is disposed in the first oil chamber. The torque converter forms the second oil chamber and transmits drive force of the motor to the first output shaft. The oil reservoir unit is disposed radially inward of the torque converter. The torque converter guides hydraulic oil from the oil reservoir unit to the second oil chamber by centrifugal force.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: December 8, 2020
    Assignee: EXEDY CORPORATION
    Inventor: Yoshihiro Matsuoka