Patents Examined by John K Kim
  • Axial flux motor having rectilinear stator teeth
    Patent number: 11355974
    Abstract: An axial flux motor for an appliance includes a stator yoke. A plurality of stator teeth extend from the stator yoke in an axial direction and are positioned about a central rotational axis. Each stator tooth includes a plurality of laminations that extend in the axial direction and form a “T” shaped member. The plurality of stator teeth are overmolded with a polymeric material to define a plurality of axial stator poles. At least one winding extends around the plurality of axial stator poles. A ring-shaped rotor rotates about the central rotational axis of the stator yoke. The rotor is positioned proximate an axial end of the plurality of axial stator poles.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: June 7, 2022
    Assignee: Whirlpool Corporation
    Inventor: James B. Hull
  • Lamination for main generator rotor in an integrated drive generator
    Patent number: 11349363
    Abstract: A lamination for use in an integrated drive generator is formed from a plurality of plates having a body including a pair of opposed cylindrical surfaces. Non-cylindrical ditches are defined circumferentially intermediate the pair of cylindrical surfaces. A plurality of passages are formed in an outer periphery of the cylindrical surfaces including relatively large holes extending through a slot to the outer periphery. Grooves are formed intermediate the relatively large holes.
    Type: Grant
    Filed: March 2, 2020
    Date of Patent: May 31, 2022
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Derek R. Hochstetler, Ted A. Martin, Duane C. Johnson, Glenn C. Lemmers, Jr.
  • Sensor magnet, motor, and air conditioner
    Patent number: 11342814
    Abstract: A sensor magnet includes a first magnetic pole part including a magnetic pole of a first polarity and a second magnetic pole part including a magnetic pole of a second polarity. A thickness of the first magnetic pole part in a direction toward a magnetic sensor is larger than a thickness of the second magnetic pole part in a direction toward the magnetic sensor.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: May 24, 2022
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takaya Shimokawa, Hiroki Aso, Takanori Watanabe, Ryogo Takahashi
  • Spherical brushless direct current machine
    Patent number: 11336162
    Abstract: A spherical brushless direct current (BLDC) machine includes a first stator, a second stator, and a spherical rotor. The first stator is symmetrically disposed about a first axis and includes a first multi-pole stator core having a first multi-phase winding wound thereon. The second stator is symmetrically disposed about a second axis and includes a second multi-pole stator core having a second multi-phase winding wound thereon. The second stator core is coupled to the first stator core, and the second axis intersects the first axis. The spherical rotor is disposed adjacent to, and is moveable relative to, the first and second stators. The spherical rotor includes a plurality of magnets that emanate a magnetic field, and each magnet has at least one of its magnetic poles facing the first and second stators.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: May 17, 2022
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Saurabh Agrawal, Deena Dayalan Kothandaraman, Renju Chandrasekhara Panicker, Ramakrishna Rao Pavanje Vishwanatha
  • Speed reducing device having power source
    Patent number: 11336147
    Abstract: A speed reducing device includes a motor and a speed reducing mechanism. The speed reducing mechanism includes at least one roller assembly, a cycloid disc, at least one fixing disc and a positioning assembly. The roller assembly is disposed within a rotor portion of the motor. While the roller assembly is rotated with the rotor portion, the roller assembly is eccentrically revolved. The roller assembly includes a wheel disc and at least one roller. The cycloid disc includes a main body and at least one cycloid tooth structure. The cycloid tooth structure is protruded from an outer periphery of the main body and in contact with the corresponding roller. While the roller assembly is eccentrically revolved, the at least one cycloid tooth structure is pushed against the corresponding roller, so that the cycloid disc is correspondingly rotated.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: May 17, 2022
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Chi-Wen Chung, En-Yi Chu, Hung-Wei Lin, Ming-Li Tsao
  • Power control unit
    Patent number: 11336156
    Abstract: A power control unit includes a power module, a support block configured to support the power module, an upper case configured to cover the power module from above, and a connection conductor configured to connect an internal power feeding passage on the side of the power module and an external power feeding passage on the side of the motor unit, wherein the connection conductor vertically passes through the support block and includes a connecting fixing section that protrudes upward than the support block and that is connected to the internal power feeding passage by a fastening member, an inclination wall inclined downward toward a side end portion of the upper wall of the upper case is provided on the upper wall of the upper case, and an opening section facing the connecting fixing section of the connection conductor is provided in the inclination wall.
    Type: Grant
    Filed: February 21, 2020
    Date of Patent: May 17, 2022
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Hiroshi Kunii, Akinari Hayashi, Yusuke Yamamura
  • Electric actuator
    Patent number: 11316399
    Abstract: An electric actuator includes a motor which has a rotor having a motor shaft and a stator, a motor case for housing the motor, and a deceleration mechanism coupled to the motor shaft. The motor case has a case cylinder portion and a lid. The lid has a top plate portion, an outer cylinder portion, an inner cylinder portion, an annular groove portion, and an annular seal member. An axial length of the outer cylinder portion is larger than an axial length of the inner cylinder portion. An inner diameter of the annular seal member is smaller than an outer diameter of the inner cylinder portion in a state that the annular seal member is removed from the lid. The annular seal member is housed in the annular groove portion in a state of being in contact with an outer peripheral surface of the inner cylinder portion.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: April 26, 2022
    Assignee: NIDEC TOSOK CORPORATION
    Inventors: Shuichi Kinjo, Hiroshi Shirai, Yutaka Uematsu
  • Electric motor system
    Patent number: 11316403
    Abstract: An electric motor system includes a rotary shaft having an axis line displaceable relative to a rotation center, a magnetic bearing for supporting the rotary shaft, a permanent magnet mounted on the rotary shaft and having a plurality of magnetic poles arranged in a circumferential direction around the axis line of the rotary shaft, three detection elements arranged in the circumferential direction around the rotation center for detecting a magnetic flux generated from the permanent magnet, and a coordinate detection section for determining coordinates of the axis line of the rotary shaft based on output values of two detection elements selected out of the three detection elements in accordance with a rotation angle of the rotary shaft.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: April 26, 2022
    Assignee: DENSO CORPORATION
    Inventors: Masao Tokunaga, Masanori Yasuda, Koji Ito
  • Radiation powered devices comprising diamond material and electrical power sources for radiation powered devices
    Patent number: 11302456
    Abstract: Provided herein is a radiation powered device comprising a semiconductor comprising a diamond material.
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: April 12, 2022
    Assignee: The University of Bristol
    Inventors: Thomas Scott, Neil Fox, Liam Payne, Chris Hutson, Hugo Dominguez Andrade
  • Electric drive module
    Patent number: 11303183
    Abstract: An electric drive module having a motor and an inverter that are disposed in a housing The motor includes a stator, which has a plurality of sets of windings. The inverter has a plurality of power semiconductors, which are mounted into a retaining member, an end plate, which is sealingly coupled to the retaining member, and an inlet port that extends through the end plate. Sets of the semiconductor devices are electrically coupled to corresponding sets of the windings. Power terminals on the semiconductor devices are coupled to a heat sink. Fins on the heat sinks extend into an annular region that is adjacent to axial ends of the windings. At least one of the retaining member and the end plate is sealingly coupled to the housing assembly. The inlet port, the annular region and cooling passages in the stator are coupled in fluid communication.
    Type: Grant
    Filed: October 14, 2021
    Date of Patent: April 12, 2022
    Assignee: American Axle & Manufacturing, Inc.
    Inventors: James P. Downs, David Crecelius, Jeffrey J. Ronning, Paul J. Valente, John C. Morgante
  • High force and low noise linear fine-tooth motor
    Patent number: 11296587
    Abstract: High force and low noise linear fine-tooth motors are described herein. Such motors can include armatures having fine teeth separated by narrow slots such that a ratio of a pitch between teeth and a pitch between permanent magnet poles is less than that of a conventional iron-core linear motor. In one embodiment, such a linear motor can include a first component having an armature including a plurality of iron cores surrounded by coil windings, and a second component having a plurality of permanent magnets with alternating polarity. The plurality of iron cores can be spaced apart from one another by an iron core pitch distance and the plurality of permanent magnets can be spaced apart from one another by a permanent magnet pole pitch distance, and a ratio of the iron core pitch to the magnetic pole pitch can be less than 1.33.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: April 5, 2022
    Assignee: Massachusetts Institute of Technology
    Inventors: David L. Trumper, Jun Young Yoon
  • Electric machine with stator having multi-tiered end turns
    Patent number: 11296570
    Abstract: An electric machine having a stator with windings all having the same length. The stator includes a plurality of slots. A plurality of windings are mounted in the slots of the stator core and define a plurality of poles circumferentially distributed about the stator core. Each winding defines at least a first wrap and a second wrap wherein each of the first and second wraps circumscribes the stator core. Each of the first and second wraps includes a wire segment disposed in a slot in each pole. The first wrap of each winding is primarily disposed in one of the layers and the second wrap of each winding is primarily disposed in a different one of the layers. The first wrap of each winding defines a first linear length and the second wrap of each winding defines a second linear length that differs from the first linear length.
    Type: Grant
    Filed: January 27, 2020
    Date of Patent: April 5, 2022
    Assignee: BorgWarner Inc.
    Inventors: Kirk E. Neet, Timothy J. Sailors
  • Electronic control unit and electric power steering apparatus having the same
    Patent number: 11292511
    Abstract: An electronic control unit is for controlling driving of a motor having a winding, and includes a substrate, a plurality of switching elements, a plurality of motor relay elements and a connector. The switching elements are mounted on the substrate, and provide an inverter circuit to switch electric conduction to the winding. The motor relays are mounted on the substrate, and are connected between the inverter circuit and the winding. The connector includes a plurality of motor terminals connected to the winding, and is connected to the substrate. All of the motor relay elements are arranged adjacent to the corresponding motor terminals.
    Type: Grant
    Filed: December 11, 2019
    Date of Patent: April 5, 2022
    Assignee: DENSO CORPORATION
    Inventor: Tsuyoshi Tashima
  • Electrically insulating, thermally conductive coatings for electrical systems and deposition methods thereof
    Patent number: 11289967
    Abstract: An electric machine includes a rotor assembly having a rotor core that extends in an axial direction and a stator assembly surrounding and coaxial with the rotor assembly. The stator assembly includes a stator core having slots extending in a radial direction into an inner surface of the stator core and extending axially from a first end surface to a second end surface of the stator core. The stator assembly includes stator coil windings disposed within the respective slots of the stator core and a first electrically insulating conformal coating disposed between the stator core and the stator coil windings. The conformal coating includes a polymer matrix impregnated with an effective amount of thermally conductive ceramic materials, above a percolation threshold, that form continuous thermal pathways across a thickness of the first coating.
    Type: Grant
    Filed: November 21, 2019
    Date of Patent: March 29, 2022
    Assignee: General Electric Company
    Inventors: Weijun Yin, Anil Raj Duggal
  • Electric machine torque key wedges
    Patent number: 11283312
    Abstract: A stator system for an electric vehicle motor may include a stator having a torque key extending axially from a first stator end, a case configured to surround the stator and defining a case opening to receive the torque key, the case defining a keyway between the torque key and the case opening, a torque key mechanism arranged within the keyway, wherein the torque key mechanism includes a pair of reciprocally aligned wedges defining a channel through at least one of the wedges, and a bolt insertable at the channel and configured to engage the channel to move at least one wedge and create an interference fit of the torque key mechanism within the keyway to attach the stator to the case.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: March 22, 2022
    Assignee: FORD GLOBAL TECHNOLOGIES, LLC
    Inventor: Bradley Ronald Heuver
  • Inverter drive system, bus bar and assembly
    Patent number: 11264871
    Abstract: An inverter drive assembly includes a first array of inverters, a second array of inverters spaced from the first array of inverters and defining a plenum therebetween, and a crossover bus bar spanning the plenum and electrically connecting the first array of inverters to the second array of inverters. The crossover bus bar includes a first laminated bus section electrically connected to the first array of inverters, a second laminated bus section electrically connected to the second array of inverters, and a solid bus connection interconnecting the first laminated bus section with the second laminated bus section.
    Type: Grant
    Filed: October 11, 2019
    Date of Patent: March 1, 2022
    Assignee: Transportation IP Holdings, LLC
    Inventors: Sarit Ratadiya, Jacob Alan Hubbell, Ajith Kuttannair Kumar, Mark Murphy, Shreenath Shekar Perlaguri
  • Terminal device for drive motor of vehicle
    Patent number: 11264862
    Abstract: The present invention relates to a terminal device for a drive motor of a vehicle. The terminal device includes: a core bobbin assembly having a core mounted in a circumferential direction, the core having a coil wound therearound; a support ring for supporting an outer part of the core bobbin assembly; and a terminal assembly for being fitted with the support ring. The terminal for constituting the terminal assembly is provided with a resin injection hole formed vertically along an inner circumference thereof, and the resin injection hole are injected with a synthetic resin for holding the terminal assembly and the core bobbin assembly together.
    Type: Grant
    Filed: August 5, 2019
    Date of Patent: March 1, 2022
    Assignee: Hyundai Mobis Co., Ltd.
    Inventors: Yeong Woo Seo, Jong Bin Park
  • Rotor for rotary electric machine and method of manufacturing rotary electric machine
    Patent number: 11264878
    Abstract: A rotor for a rotary electric machine, wherein: magnet insertion holes are formed, each defined by the plurality of through holes communicating with each other in the axial direction across the plurality of magnetic sheets; and each of the permanent magnets is twisted about the center axis so as to be placed into a corresponding one of the magnet insertion holes, each having opposite ends in the axial direction that are shifted from each other by an angle corresponding to the constant angle, from outside in the axial direction.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: March 1, 2022
    Assignees: AISIN CORPORATION, AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Masayuki Ikemoto, Teppei Tsuda, Masafumi Sakuma
  • Coil substrate, laminated coil substrate, motor coil substrate, and motor
    Patent number: 11264855
    Abstract: A coil substrate includes a flexible substrate, and a coil including a wiring and formed on the flexible substrate. The flexible substrate has a cut penetrating through the flexible substrate such that the cut is formed to extend along a portion of the coil.
    Type: Grant
    Filed: November 15, 2019
    Date of Patent: March 1, 2022
    Assignee: IBIDEN CO., LTD.
    Inventors: Haruhiko Morita, Hitoshi Miwa, Shinobu Kato, Toshihiko Yokomaku, Hisashi Kato, Takahisa Hirasawa, Tetsuya Muraki, Takayuki Furuno
  • Brushless direct currency (BLDC) motor and manufacturing method thereof
    Patent number: 11251679
    Abstract: Provided is a brushless direct currency (BLDC) motor and a manufacturing method thereof, and more particularly, a brushless direct currency (BLDC) motor including a rotor rotated to drive an impeller and capable of reducing a defective rate of the motor due to a rotational imbalance by controlling a shape of a magnet portion included in the rotor, and a manufacturing method thereof.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: February 15, 2022
    Assignee: COAVIS
    Inventors: Jung Kil Lee, Gyu Sang Yu, Dong Heon Mo, Hyun Tae Lee