Patents Examined by Maged M Almawri
  • Motor with bus bars located between inlet of bracket and stator
    Patent number: 11277051
    Abstract: A motor includes a shaft, a bearing supporting the shaft, an armature disposed radially outward of the bearing, a bracket to which the bearing and the armature are fixed, a covered cylindrical rotor connected to the shaft, and a bus bar unit. The armature includes a core back, teeth extending radially outward from the core back, an insulator covering surfaces of the, and a defined by a wire wound from above the insulator around the teeth. The bus bar unit includes bus bars to which the coils are connected, a bus bar holder holding the bus bars, and a bus bar cover covering portion of the bus bars.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: March 15, 2022
    Assignee: NIDEC CORPORATION
    Inventors: Satoshi Kajikawa, Yusuke Makino
  • Laminated rotor having deflecting magnet retaining prongs and support posts for the prongs
    Patent number: 11264850
    Abstract: A rotor assembly for an electric machine includes a rotor core that is fabricated from a plurality of laminations stacked along a rotational axis of the electric machine. The rotor core has a plurality of arcuately arranged, axially extending magnet-receiving slots. The rotor core includes a plurality of magnets received in respective ones of the magnet-receiving slots. Each of the laminations includes opposed deflectable magnet-retaining prongs that extend into a corresponding one of the magnet-receiving slots. The magnet-retaining prongs are deflected by and engage the magnets to exert a reactive force against the magnets and hold them in place. Each of the laminations also includes respective support posts axially adjacent the magnet-retaining prongs. The support posts extend alongside and thereby limit the deflection of the magnet-retaining prongs when engaged with the corresponding one of the magnets.
    Type: Grant
    Filed: September 5, 2019
    Date of Patent: March 1, 2022
    Assignee: Nidec Motor Corporation
    Inventor: John M. Tucker
  • Rotor with armature blocks formed by plastic encapsulation with anchoring elements
    Patent number: 11258318
    Abstract: A rotor for use in an electric motor, and to a method for producing a rotor of this kind. The rotor includes a plurality of armature sections, a plurality of magnets, a rotor core and a plastic encapsulation. The rotor core is formed by the plastic encapsulation from plastic. The armature sections are formed as individual armature blocks which are anchored in the rotor core at least by an anchoring element on their inner side that faces a rotor center axis.
    Type: Grant
    Filed: May 8, 2017
    Date of Patent: February 22, 2022
    Assignee: Vitesco Technologies GmbH
    Inventor: Lothar Schröder
  • Rotating electric machine having magnetic wedge with planes and having differences in magnetic permeability
    Patent number: 11258327
    Abstract: The magnetic wedge of embodiments is a magnetic wedge used for a rotating electrical machine and includes magnetic bodies having a planar structure having a principal plane. The principal planes of the magnetic bodies are disposed approximately perpendicularly to the air-gap surface between a stator and a rotor of a rotating electrical machine. The magnetic bodies have differences in the axial direction magnetic permeability in the axial direction of the rotating electrical machine, the rotational direction magnetic permeability in the direction of rotation, and the diametric direction magnetic permeability in the direction of the diameter.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: February 22, 2022
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hiroaki Kinouchi, Tomohiro Suetsuna, Takahiro Kawamoto
  • Double helix actuator with magnetic sections having alternating polarities
    Patent number: 11258343
    Abstract: A double helix actuator is disclosed that includes a double helix coil wound around a movable proof mass that is enclosed within a magnetic structure. The double helix coil and the magnetic structure are arranged relative to each other so that the magnetic field generated by the entirety of the double helix coil contributes to a linear force direction of the actuator. The double helix actuator produces a greater linear force density compared to traditional racetrack coil actuators, where only a portion of the coil contributes to the linear force. The double helix actuator also produces torque in addition to linear force which allows the double helix to provide unique haptic sensations in a variety of applications.
    Type: Grant
    Filed: May 21, 2018
    Date of Patent: February 22, 2022
    Assignee: Apple Inc.
    Inventors: Jere C. Harrison, Alex J. Speltz, Xin Alice Wu
  • Rotor core with concave portions between flake portions and base portions with dimensions
    Patent number: 11251685
    Abstract: A method of manufacturing a rotor core, the method including laminating first laminated steel plates in an axial direction. The first laminated steel plates each include a plurality of flake portions arranged in a circumferential direction with gaps between each other and a plurality of protrusions protruding radially outward from an outer side surface of a base portion and each having at least a portion located in the gap between the flake portions. The method further includes fixing the base portions to each other and fixing the flake portions to each other. The method further includes removing the protrusions of the laminated steel plates radially outward.
    Type: Grant
    Filed: December 26, 2017
    Date of Patent: February 15, 2022
    Assignee: NIDEC CORPORATION
    Inventors: Yasuaki Nakahara, Takeshi Honda, Junichi Uno, Takayuki Migita, Hiroshi Kitagaki, Tsuyoshi Nakamura
  • Motor stator with dovetail or rectangular mount structure and stator teeth airgap width ratio
    Patent number: 11245293
    Abstract: The disclosure provides a combined motor stator which is configured to be cooperated with a rotor. The combined motor stator includes a stator yoke and a plurality of stator teeth. The stator yoke has a plurality of first mount structures. Each of the plurality of stator teeth has a second mount structure. The second mount structures of the stator teeth are respectively and removably mounted on the first mount structures of the stator yoke. Each of the second mount structures is in a dovetail shape.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: February 8, 2022
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Chia-Hao Hsu, Sheng-Tsz Liu, Yau-Bin Yang, Shou-Long Yu, Lin-Yen Peng, Yang-Guang Liu
  • Shaft structure with adjustment portions for alignment with rotor center of gravity
    Patent number: 11239726
    Abstract: The embodiments of the present disclosure provide a shaft structure of a motor, comprising a housing, a stator disposed inside the housing, and a rotor rotatably disposed inside the stator. The stator may comprise a stator core and a coil wound around the stator core, and the rotor may comprise a rotor core and a rotational shaft coupled to the rotor core. The rotational shaft may comprise a plurality of adjusting portions formed on an outer circumferential surface of the rotational shaft to align a center of gravity of the rotor with a center of the rotational shaft.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: February 1, 2022
    Assignee: LG Electronics Inc.
    Inventors: Kyeonghwan Kim, Yangsoo Lee, Gyeongjae Park, Hojun Shin, Junho Ahn, Wonjung Sung
  • Electric power steering sealing valve system, a valve assembly arranged in the end cap
    Patent number: 11228223
    Abstract: A motor housing provided with a power pack assembly for a power steering system, includes a motor housing wall and an end cap. The motor housing wall extends along a first axis between a first motor housing end and a second motor housing end. The end cap is disposed at the first motor housing end. The end cap defines a projection having a first portion that extends along the first axis and a second portion that extends along a second axis that is offset from the first axis. The second portion is arranged to receive a valve assembly.
    Type: Grant
    Filed: May 21, 2018
    Date of Patent: January 18, 2022
    Assignee: Steering Solutions IP Holding Corporation
    Inventors: Kevin J. Haubenstricker, Conrad G. Vorwerck, Daniel M. Alba
  • Molded coil body with coil and semiannular busbars integrally connected with coils in the molded coil body
    Patent number: 11223260
    Abstract: The invention provides a coil molding attached to a stator of a motor, the coil molding including a coil wound around each of teeth of the stator, and a bus bar connected to the coil and molded integrally with the coil. The invention also provides another coil molding attached to a stator of a motor, the coil molding including a set of coils wound respectively around a plurality of teeth of the stator, the set of coils being molded integrally with each other.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: January 11, 2022
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yuichi Yoshikawa, Keiichiro Nukada, Hirokazu Yamauchi, Mitsuoki Hishida
  • Ceiling fan motor housing with L-shaped positioning member with horizontal portion to support bottom end of cover
    Patent number: 11190080
    Abstract: A ceiling fan motor housing includes a bottom cover member, a hollow housing member, and a plurality of screws. The bottom cover member is formed with a plurality of threaded holes. The housing member is formed with a plurality of L-shaped positioning members extending from a bottom end thereof. Each of the positioning members has a vertical portion which is connected to the bottom end of the housing member and a horizontal portion which extends inwardly from a bottom end of the vertical portion, supports the bottom cover member, and is formed with a positioning hole. The screws respectively extend through the positioning holes of the positioning members to respectively engage the threaded holes of the bottom cover member.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: November 30, 2021
    Inventor: Kuo-Tsun Lin
  • Cooling motor controller with a motor including wedge-shaped heat sinks
    Patent number: 11159074
    Abstract: Embodiments of cooling a motor controlling using a motor are disclosed. In some embodiments, a system includes an electric motor including at least one rotor with integrated features positioned and configured to pull air into and through the electric motor. The system also includes at least one motor controller each comprising a heat sink positioned in an air intake path from a source of air to the electric motor. A method of manufacturing the system includes arranging at least one motor controller and at least one electric motor, coupling the at least one motor controller and at least one electric motor via a flexible duct, and adapting the arrangement of the at least one motor controller and the at least one electric motor to passively provide cooling via airflow through the at least one motor controller and at least one electric motor in proportion to a load on the at least one electric motor.
    Type: Grant
    Filed: February 28, 2020
    Date of Patent: October 26, 2021
    Assignee: Wisk Aero LLC
    Inventors: Geoffrey Alan Long, Justin Char, Nathan Elliot Frank, Robert Wayne Moore, Diederik Marius, Michael John Burgart
  • Electric machines with energizable and non-energizerable U-shaped stator segments
    Patent number: 11146123
    Abstract: A method of making a stator module for use in a stator assembly of an electric machine includes temporarily supporting a plurality of stator segments in a desired orientation using a temporary support. The desired orientation of the stator segments is a relative orientation of the stator segments within the stator module. A mold is placed around the plurality of stator segments and the mold is filled with a potting material to form a stator module such that the potting material supports the stator segments in their desired orientation. The temporary support is removed.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: October 12, 2021
    Assignee: GREEN RAY TECHNOLOGIES, LLC
    Inventors: Ramon Anthony Caamaño, Hector Luis Moya, Jeffrey Wayne Harris, Robert R. Ferber
  • Electric drive unit cooling and lubrication system with bearing shims and rotor shaft channel
    Patent number: 11137060
    Abstract: Systems and method for cooling and lubricating power transmission systems include providing oil to an oil tube and then to a rotor shaft via the oil tube. Oil may also be provided through at least one channel defined in an end of the oil tube inserted into an annular region of the rotor shaft, through at least one channel defined in an end of the gear shaft and between the end and a shoulder of the rotor shaft and through at least one channel defined in side surface of the rotor shaft in a region of rotor shaft inserted into the gear shaft. Such systems and method can also include providing oil a fluid passageway in a bearing shim plate via an inlet tube. Oil may also be provided through a radial gap adjacent a bearing shim plate outlet and chamber defined in the bearing shim plate.
    Type: Grant
    Filed: April 4, 2018
    Date of Patent: October 5, 2021
    Assignee: Tesla, Inc.
    Inventors: Benjamin Dellal, Luke Ottaway, Scott Michael Graves, Eric Bellemare
  • Salient pole rotor with magnetic pole portions, concave portions and cylindrical cover portion with fiber filament
    Patent number: 11139704
    Abstract: A salient-pole rotor includes a magnetic pole portion having a plurality of protruding portions which protrude outward in a radial direction from a base portion, is disposed to be spaced apart from each other at intervals in a circumferential direction of a rotary shaft and have outer circumferential surfaces along an imaginary cylindrical surface. The magnetic pole portion includes a concave portion reinforcing portion which is provided inside the concave portion and a cylindrical reinforcing portion which covers the magnetic pole portion and the outer circumferential surface of the concave portion reinforcing portion. The base portion has a plurality of slits extending in the circumferential direction to be spaced apart from each other in the radial direction. A slit reinforcing portion formed of a non-magnetic material is provided inside the slits.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: October 5, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Musashi Sakamoto, Yukio Yamashita
  • Motor
    Patent number: 11108298
    Abstract: A motor includes a shaft, a bearing, an armature, a bracket, and a covered cylindrical rotor including a rotor lid portion, a rotor side wall portion, and a rotor magnet. The bracket includes a cylindrical portion. The bearing includes lower and upper ball bearings. The shaft includes a shaft main body and a nut. In the lower ball bearing, a lower surface of an inner ring is in contact with an upper surface of the nut and an upper surface of an outer ring is vertically supported by the cylindrical portion. In the upper ball bearing, an inner ring is vertically fixed with respect to the shaft main body and a lower surface of an outer ring is vertically supported by the cylindrical portion.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: August 31, 2021
    Assignee: NIDEC CORPORATION
    Inventor: Yusuke Makino
  • Rotating electric machine and drive system for rotating electric machine with housing and terminal boxes outside the housing
    Patent number: 11101715
    Abstract: A rotating electric machine includes a housing, a stator core housed in the housing, a plurality of systems of winding groups, a plurality of first lead wires, and a plurality of terminal boxes. The plurality of systems of winding groups are arranged in the stator core and electrically connected to a plurality of power conversion devices, one system of winding group is defined as a plurality of windings electrically connected to one power conversion device. The plurality of first lead wires are electrically connected to the plurality of systems of winding groups and wired inside the housing. The plurality of terminal boxes are arranged at a plurality of places in an outer circumference of the housing, the plurality of first lead wires are distributed in a unit of the system and introduced into the plurality of terminal boxes.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: August 24, 2021
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Koji Kajimoto, Eigo Hayashi
  • Motor with an upper bearing including a washer, a lower bearing, and bearing holding portions
    Patent number: 11088588
    Abstract: A motor includes a rotor that includes a shaft centered on a central axis extending in an upward and downward direction; a stator that is disposed to face the rotor in a radial direction; a bearing that supports the shaft; a bearing holder that holds the bearing; and a housing that accommodates the rotor, the stator, and the bearing holder, and opens to an upper side. The housing includes a controller accommodating region that accommodates at least a portion of a controller electrically connected to the stator on an upper side from the bearing holder. An inner diameter of the housing in the controller accommodating region is larger than an inner diameter of the housing at a position to which the bearing holder is attached. The bearing holder is held on an inner peripheral surface of the housing by interference fitting.
    Type: Grant
    Filed: October 6, 2016
    Date of Patent: August 10, 2021
    Assignee: NIDEC CORPORATION
    Inventors: Kosuke Ogawa, Takashi Hattori, Takashi Seguchi, Shunsuke Murakami, Takao Atarashi, Yoshiaki Yamashita
  • Motor with potting section and hole provided with cap through which winding is inserted
    Patent number: 11088585
    Abstract: A motor unit includes a stator including a coil formed from a wound winding that is configured by a conductive member including an insulating covering layer on the surface of the conductive member, a rotor that rotates under the influence of a rotating magnetic field generated by the stator, and a centerpiece that supports the stator and is formed with a centerpiece-side winding insertion hole through which the winding is inserted. The motor unit also includes a circuit device and a potting section. The potting section is formed using potting material, and seals a gap formed between the centerpiece-side winding insertion hole and the winding by achieving a state in which a portion of the potting section is closely adhered to the covering layer of the winding.
    Type: Grant
    Filed: March 6, 2017
    Date of Patent: August 10, 2021
    Assignee: DENSO CORPORATION
    Inventors: Shinji Ikeda, Takumi Nagaya, Tatsuya Takagi, Kuniaki Matsumoto, Kazuhiro Hosotani, Yutaro Yagi, Yoshihiko Suga, Takuya Matsumoto, Shunichi Hiraoka
  • Rotor wedges and layers and heat sinks
    Patent number: 11081920
    Abstract: A wedge for a wound rotor includes a wedge body. The wedge body has a first layer and one or more second layers interfused with one another to provide structural support and limit resistive heating of the wedge from current flow within the wedge body by windings spaced apart by the rotor wedge. Generator rotors and methods of making generator rotors are also described.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: August 3, 2021
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Debabrata Pal, Ashutosh Joshi