Patents Examined by Ahmed Elnakib
  • Patent number: 11955864
    Abstract: A linear motor includes a stator including a plurality of salient poles arranged at regular intervals in the Y-axis direction, and a mover movable in the Y-axis direction and facing the stator in the X-axis direction, in which the mover includes a plurality of teeth arranged in the Y-axis direction, three-phase alternate current windings wound around the teeth, a mover magnetic yoke that connects the plurality of teeth, permanent magnets each disposed in a gap between the teeth of identical phase, and magnetic flux barriers each embedded near the base of each tooth of the plurality of teeth, disposed completely within a width of each tooth in the X-axis direction, and spaced apart from the permanent magnet in the X-axis direction.
    Type: Grant
    Filed: February 3, 2022
    Date of Patent: April 9, 2024
    Assignee: OKUMA CORPORATION
    Inventor: Tatsuya Shizu
  • Patent number: 11955843
    Abstract: The present disclosure relates to a motor. The motor can include a stator defining an interior space, a rotor disposed in the interior space of the stator. The rotor can include a body defining a structure and a plurality of magnets disposed in the plurality of cavities. In some embodiments, the structure defines a plurality of cavities in the body of the rotor, the plurality of cavities includes at least a first cavity and a second cavity, the first cavity is spaced radially outward from the second cavity, and a thickness of the first cavity is larger than a thickness of the second cavity. In some embodiments, at least some of the cavities of the plurality of cavities have a magnet from the plurality of magnets disposed therein.
    Type: Grant
    Filed: December 22, 2021
    Date of Patent: April 9, 2024
    Assignee: ABB SCHWEIZ AG
    Inventors: Darren Tremelling, Elio Perigo, Sheng Zhong, Lorenzo Mazza, Matthew Hoffman
  • Patent number: 11955872
    Abstract: A drive device includes: a drive unit including a rotary electric machine and a drive unit case that houses the rotary electric machine; a control unit including a control device configured to control the rotary electric machine; and a connection unit including a connection line that electrically connects the rotary electric machine and the control device. The control unit is disposed at a position facing the outer peripheral surface of the drive unit case. A space portion is provided between the outer peripheral surface of the drive unit case and the control unit. The connection unit is provided such that the connection line electrically connects the rotary electric machine and the control device through the space portion.
    Type: Grant
    Filed: February 24, 2022
    Date of Patent: April 9, 2024
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Hiroshi Kunii
  • Patent number: 11949314
    Abstract: Example brush holder assemblies of an electric machine are disclosed. An example brush holder assembly of an electric machine includes a carbon brush including an upper surface and a lower surface opposite the upper surface. The brush holder assembly also includes one or more lead wires extending out of the carbon brush at an insertion point on the upper surface and a first cavity extending into the carbon brush from the upper surface at a location spaced away from the insertion point of the one or more lead wires and unobstructed by the one or more lead wires.
    Type: Grant
    Filed: February 21, 2023
    Date of Patent: April 2, 2024
    Assignee: CUTSFORTH, INC.
    Inventors: Robert S. Cutsforth, Dustin L. Cutsforth, David William Drury Harrison, Douglas Christopher Bruey
  • Patent number: 11942877
    Abstract: A triboelectric generator includes a first triboelectric material providing a first surface, a first electrode attached to the first triboelectric material, a second triboelectric material providing a second surface for contacting the first surface, and a second electrode attached to the second triboelectric material. The second triboelectric material is different from the first triboelectric material. The first electrode and the second electrode are arranged to be electrically connected via an electrical connection. The first triboelectric material comprises a polymer material and an organic semiconductor material arranged in the polymer material.
    Type: Grant
    Filed: April 29, 2022
    Date of Patent: March 26, 2024
    Assignee: City University of Hong Kong
    Inventors: Lingyun Wang, Walid Daoud
  • Patent number: 11942840
    Abstract: The present disclosure is related to a self-starting synchronous reluctance motor rotor, a motor and a compressor. The self-starting synchronous reluctance motor rotor includes a rotor core; the rotor core is provided with a plurality of slit grooves; both ends of each of the slit grooves are respectively provided with a filled groove; a first end of the filled groove is provided adjacent to each slit groove, and a second end of the filled groove extends outwards parallel to the d-axis of the rotor core; the second end of the filled groove is provided with at least one bevel edge, so that when the d-axis magnetic flux of the rotor core enters a stator along channels formed at the bevel edges, no abrupt change occurs to the magnetic flux.
    Type: Grant
    Filed: December 24, 2019
    Date of Patent: March 26, 2024
    Assignee: GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI
    Inventors: Xia Li, Bin Chen, Jinfei Shi, Yong Xiao, Qinhong Yu
  • Patent number: 11942824
    Abstract: An axial flux electrical machine, such as an electric motor, dynamo, pump, generator, or alternator has a casing with vents or openings enabling cooling or pumped media to flow into and out of the casing when the rotor of the electrical machine rotates. The stator is formed from conductive elements connected at their axial outer regions by interconnecting members. Conductive elements have a gap or space to direct cooling through the winding to the central region. A portion of the windings of the stator are spaced apart to allow media to flow between the windings to the central axis area and then is allowed flow outward between the rotor and the stator.
    Type: Grant
    Filed: May 21, 2019
    Date of Patent: March 26, 2024
    Inventor: John Robert Culleton, III
  • Patent number: 11942826
    Abstract: An example rotor assembly includes a rotor core having an axial length and configured to rotate about a longitudinal axis. The rotor core includes a first wall and a second wall radially within the first wall and defining a fluid flow path configured to guide a fluid along an inner surface of the first wall.
    Type: Grant
    Filed: September 24, 2021
    Date of Patent: March 26, 2024
    Assignee: Rolls-Royce Electrical Norway AS
    Inventor: Ken Flydalen
  • Patent number: 11936258
    Abstract: A method for controlling outputs of electric motors includes the steps of (a) providing an electric motor including a stator winding unit selected from first to fourth winding groups, each of the winding groups having at least a primary winding with a first number of poles and a first rated power, and at least a secondary winding with a second number of poles being the same as or different from the first number of poles and a second rated power being the same as or different from the first rated power; and (b) providing a control device respectively coupled with the electric motor and an external electrical power source for sensing a needed loading state of the electric motor and suppling a required connection relationship between the stator winding unit and the external electrical power source based on the needed loading state sensed by the control device.
    Type: Grant
    Filed: December 14, 2021
    Date of Patent: March 19, 2024
    Inventor: Feng-Tien Chen
  • Patent number: 11936272
    Abstract: A haptic transducer comprising a magnetic plate, a plurality of coils each separately couplable to a signal generator such that axis of each coil is perpendicular to the plate and all coils are on a common side of the plate, and signals may be sent from said signal generator to each coil individually.
    Type: Grant
    Filed: February 5, 2017
    Date of Patent: March 19, 2024
    Assignee: WOOJER LTD.
    Inventor: Mor Efrati
  • Patent number: 11929691
    Abstract: A triboelectric generator can include respective contact members including a first contact member and second contact member. The respective contact members can be movable with respect to each other such that the respective contact members separate from each other in a first configuration and contact each other in a second configuration. The first contact member can include a first conductive layer and a contact layer. The second contact member can be spaced apart from the first contact member in the first configuration and can include an insulating contact layer and a second conductive layer. The insulating contact layer can be configured to come into contact with the contact layer of the first contact member and the transition of the respective contact members from the first configuration to the second configuration can create triboelectric charges. In some examples, the first contact member can include a non-contact insulating layer.
    Type: Grant
    Filed: September 7, 2022
    Date of Patent: March 12, 2024
    Assignee: The Board of Trustees of The University of Alabama, for and on behalf of the University of Alabama in Huntsville
    Inventors: Gang Wang, Yu Lei, Moonhyung Jang, Jacob Lee
  • Patent number: 11929650
    Abstract: The invention relates to an electric machine comprising a rotor and a stator. The rotor (40, 4) comprises a plurality of permanent magnets (4), the stator comprises a plurality of coils suitable for being powered by an electric current and two Hall effect sensors (6) on supports (60). The sensors are configured to detect a change in gradient of the normal component of a magnetic field generated by the permanent magnets (4). The stator comprises a part (7) comprising —a first zone (7a), —a second zone (7b), and a third zone (7c) extending from the first zone (7a) up to the second zone (7b). The maximum radial thickness of the third zone (7c) is less than the minimum radial thickness of the first zone and the second zone.
    Type: Grant
    Filed: October 23, 2019
    Date of Patent: March 12, 2024
    Assignee: SAFRAN ELECTRONICS & DEFENSE
    Inventors: Alberto Rossi, Jérôme Piaton, Benjamin Daguse
  • Patent number: 11923737
    Abstract: A flywheel system includes a rotor and a fixture. The rotor forms an aperture. The fixture includes a bottom support, a top support, and a shaft connecting the bottom support to the top support. The shaft passes through the aperture. The bottom support and the top support are outside opposite ends of the aperture. The rotor is configured to rotate about the shaft. A method for operating a flywheel system includes converting between rotational energy of a rotor and electrical energy in windings of a generator stator that is implemented in a stationary shaft passing through an aperture of the rotor, while the rotor is rotating about the shaft.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: March 5, 2024
    Assignee: WATTSUP POWER A/S
    Inventors: John Røn Pederson, Martin Speiermann, Jacopo Granata, Valère Combescot, Mikael Eronen
  • Patent number: 11905993
    Abstract: A turbomachine according to an embodiment of the present disclosure may include a rotary shaft, a magnetic bearing including a core body configured to surround the rotary shaft, a plurality of poles radially extending from an inner surface of the core body toward the rotary shaft, and coils wound around the plurality of poles to levitate the rotary shaft by using a magnetic force generated by a magnetic field formed by applied electric current, a sleeve journal bearing disposed between the rotary shaft and the magnetic bearing so as to surround the rotary shaft and configured to levitate the rotary shaft by generating a dynamic pressure when the rotary shaft rotates, and a permanent magnet disposed between the plurality of poles and configured to support the rotary shaft by using a magnetic force.
    Type: Grant
    Filed: September 29, 2022
    Date of Patent: February 20, 2024
    Assignee: Korea Institute of Science and Technology
    Inventors: Yong Bok Lee, Jungwan Kim, Yunseok Ha, Byul An, Wonil Kwak, Yeong-do Lee
  • Patent number: 11909150
    Abstract: A slip ring for transferring electrical signals between rotating and static elements of a device includes a rotating element, a static element, an electrical contact assembly, including a plurality of subassemblies, contacting the rotating element and static element, one subassembly including a deformable PCB, and a spring element positioned to supply an axially aligned force to a face of the PCB to facilitate electrical contact between the PCB and other electrical contacts elements on another subassembly.
    Type: Grant
    Filed: June 29, 2022
    Date of Patent: February 20, 2024
    Assignee: SeeScan, Inc.
    Inventors: Alexander L. Warren, Mark S. Olsson, Nicholas A. Smith
  • Patent number: 11909296
    Abstract: A magnetic bearing is provided. The magnetic according to the present disclosure includes: a stator core disposed to surround a central axis; a plurality of bobbins coupled to the stator core; a coil wound around the bobbin; and a positioning member coupled to the plurality of bobbins and determining positions of the plurality of bobbins, and the positioning member has a circular shape centered on a central point.
    Type: Grant
    Filed: April 6, 2021
    Date of Patent: February 20, 2024
    Assignee: LG ELECTRONICS INC.
    Inventors: Sena Jeong, Kiwook Lee, Seongki Baek
  • Patent number: 11909297
    Abstract: A force-balancing magnetic bearing with an adjustable bias magnetic field for a stator permanent magnet motor is provided. The force-balancing magnetic bearing includes four permanent magnetic poles and four electromagnetic poles, wherein a magnetic field energy of the four permanent magnetic poles is sourced from a stator permanent magnet of the stator permanent magnet motor, each permanent magnetic pole is formed by a left permanent-magnet magnetic bridge, a right permanent-magnet magnetic bridge, a magnetic adjusting section, an electromagnetic pole stator, an electromagnetic pole and permanent magnetic pole isolation plate, a permanent-magnet two-side magnetic pole connection section, a left permanent-magnet magnetic pole and a right permanent-magnet magnetic pole, a magnetic flux of each permanent magnetic pole is adjusted by the magnetic adjusting section, and the four electromagnetic poles are adjusted by currents introduced into electromagnetic pole winding coils.
    Type: Grant
    Filed: November 29, 2021
    Date of Patent: February 20, 2024
    Assignee: SOUTHEAST UNIVERSITY
    Inventors: Wei Hua, Zhiheng Zhang, Qifan Xu
  • Patent number: 11901788
    Abstract: In accordance with one aspect of the present disclosure, a vibration generating device includes a protruding part; a base provided with the protruding part and formed of a magnetic body; an annular coil surrounding the protruding part; a plate facing the base and formed of a magnetic body; and an elastic member supporting the plate with respect to the base. The plate and the base constitute magnetic circuit.
    Type: Grant
    Filed: September 12, 2022
    Date of Patent: February 13, 2024
    Assignee: MINEBEA MITSUMI Inc.
    Inventors: Mikio Umehara, Yutaka Kamogi
  • Patent number: 11894720
    Abstract: A core used in an axial gap type rotating electrical machine includes an annular yoke having a plurality of through-holes disposed in a circumferential direction, and a plurality of columnar teeth disposed in the circumferential direction of the yoke, each of the plurality of columnar teeth including one end inserted into each of the plurality of through-holes. The yoke and each of the teeth are composed of a powder compact separate from each other, and the one end of each of the teeth is off-center in the through-hole.
    Type: Grant
    Filed: December 11, 2019
    Date of Patent: February 6, 2024
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Tatsuya Saito, Yuichi Nakamura, Tomoyuki Ueno
  • Patent number: 11894724
    Abstract: A rotor core lamination is provided. The rotor core lamination includes a plurality of salient poles. Each of the salient poles includes: a pole body having a central axis in a radial direction of the rotor core lamination; and a pole shoe extending radially outward from the pole body, wherein the pole shoe has a pole shoe arc, and a central point of the pole shoe arc is offset from the central axis.
    Type: Grant
    Filed: October 29, 2020
    Date of Patent: February 6, 2024
    Assignee: Generac Power Systems, Inc.
    Inventor: David William Pollock