Patents Examined by Burton S. Mullins
  • Patent number: 11223247
    Abstract: A stator for a rotary electric machine includes a stator core and a stator coil. The stator core includes an annular back yoke, a plurality of teeth, and a plurality of slots. The stator coil, being housed in the slots and wound around the teeth of the stator core, includes coil ends protruding from the respective end faces of the stator core in the axial direction. The rotary electric machine stator further includes an insulating sleeve which is wound around root portion of the coil end on the end face of the stator core in the axial direction and disposed along the circumferential direction of the back yoke.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: January 11, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kentaro Haruno, Makoto Yoshikawa
  • Patent number: 11201529
    Abstract: A stator core including field slots housing field windings and armature slots housing armature windings is provided. Permanent magnets are housed in the respective armature slots. Field windings face to the permanent magnets directly or via the stator core on the outer and inner circumferential sides. A coil end of one of the armature windings straddles the predetermined one of the field slots and passes over the axial end face of each of the permanent magnets in the corresponding one of the field slots over which the coil end straddles.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: December 14, 2021
    Assignees: DAIKIN INDUSTRIES, LTD., NAGOYA INSTITUTE OF TECHNOLOGY
    Inventors: Yoshinari Asano, Toshinari Kondou, Yoshihito Sanga, Yoshifumi Maeda, Takashi Kosaka
  • Patent number: 11171533
    Abstract: Simple to manufacture electric generators or motors and methods of manufacturing such are disclosed. Such devices are preferably manufactured from 2-dimensionally cut, flat stock materiel. The generator or motor has two large diameter rotors to enable, for example, useful generation of electricity at low revolutions per minute. The frame of the device includes side walls with castellated stators on the periphery of the walls. Castellated end plates removeably interlock with the stators. The rotors drive magnets past the stators in the frame of the device. In preferred embodiments, rotors are driven by human legs or arms, low speed wind, or water with low or zero water drop distance.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: November 9, 2021
    Inventor: Francis Xavier Gentile
  • Patent number: 11167436
    Abstract: The present invention relates to electric appliances for personal care, in particular electric shavers, comprising a drive unit having first and second drive components adapted to magnetically interact with each other, and a magnetic shielding at least partially surrounding the drive unit. Said magnetic shielding is formed by structural parts supporting the drive unit and/or transmitting drive movements of the drive unit, wherein such structural parts are made of a soft magnetic material. More particularly, a mounting frame and a transmitter frame together form a magnetic shielding cage which is movable as the mounting frame and the transmitter frame are movable relative to each other.
    Type: Grant
    Filed: April 11, 2018
    Date of Patent: November 9, 2021
    Assignee: Braun GMBH
    Inventors: Bernhard Kraus, Thomas Verstege, Uwe Schober, Frank Ziegler
  • Patent number: 11148708
    Abstract: An electronic control device includes: a circuit board including a substrate and an electrolytic capacitor connected to the substrate; a heat sink including a recess that houses the electrolytic capacitor; and heat dissipation material provided in the recess. The electrolytic capacitor has an end surface facing a bottom surface of the recess, and the heat dissipation material is in contact with the end surface and the bottom surface.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: October 19, 2021
    Assignee: NSK LTD.
    Inventors: Masakazu Morimoto, Noboru Kaneko
  • Patent number: 11149808
    Abstract: An excitation operation brake includes a braking shaft, an armature that rotates integrally with the braking shaft, and a field core including a disc portion facing the armature. The disc portion includes an outer magnetic shielding portion and an inner magnetic shielding portion, which make a magnetic flux flowing through the disc portion bypass to the armature a plurality of times. The outer magnetic shielding portion includes a low-magnetic resistance path having a magnetic resistance smaller than the magnetic resistance of a magnetic path that bypasses to the armature.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: October 19, 2021
    Assignee: OGURA CLUTCH CO., LTD.
    Inventors: Yasuo Kidena, Keita Nakashima, Takeshi Maeda, Motoi Kato, Yoshihiro Kurosu, Hiroyasu Onai, Kosuke Murakami
  • Patent number: 11152830
    Abstract: A connector assembly (12) for electrically and mechanically connecting via bolting, the top and bottom stator coil sections (14, 16) of an electrical generator comprising at least one pair of stator coil sections (14, 16) having spaced apart upper coil headers (18, 20) and lower coil headers (22, 24), each comprising a conductive material to provide at least two parallel paths for passing respective flows of electric current; first and second connectors (26, 28) including respective couplers (36, 38, 40, 42) for connecting the headers (18, 20, 22, 24), wherein the first and second connectors (26, 28) are electrically and mechanically isolated from one another via an air gap (34) therebetween so that none of the couplers (36, 38, 40, 42) bridge the air gap (34) and thereby allow relative movement between the first and second connectors (26, 28).
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: October 19, 2021
    Assignee: Siemens Energy, Inc.
    Inventors: David Earl Hulsey, William Green, Robert Gore
  • Patent number: 11146137
    Abstract: A coil insulation structure for a rotating machine provided in the present invention is based on a conventional insulation technology. In particular, tooth portions of an iron core in which coil windings are inserted have a straight tooth structure without a shoe portion, and a component with an insulation effect is further added at a position of an opening of a groove in which the coil winding is located, so that an insulation effect is improved, and at the same time an added insulation component is used to ensure a thickness and a size of an inner layer located at a position adjacent to an air gap of a motor when the coil winding is encapsulated, thereby improving product quality.
    Type: Grant
    Filed: June 3, 2019
    Date of Patent: October 12, 2021
    Assignee: HIWIN MIKROSYSTEM CORP.
    Inventors: Chia-Siang Lien, Cheng-Hsun Pan, Ming-Chih Lai
  • Patent number: 11139727
    Abstract: The present invention relates to a permanent magnet electrical machine, and more particularly, to a permanent magnet electrical machine for reducing a detent force, the machine being capable of reducing a detent force by arranging a plurality of movers having the same teeth at predetermined intervals. In addition, according to the present invention, the permanent magnet electrical machine comprising a stator and a plurality of movers configured to perform linear motion, curvilinear motion, or rotary motion with respect to the stator is provided.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: October 5, 2021
    Assignee: KOREA ELECTROTECHNOLOGY RESEARCH INSTITUTE
    Inventors: Shi Uk Chung, Jong Moo Kim
  • Patent number: 11139707
    Abstract: An electric machine has a stator having an array of electromagnetic elements. A rotor is mounted on bearings and has an array of rotor posts. The rotor posts each have a length defining opposed ends and the array of rotor posts extends along the rotor in a direction perpendicular to the length of each of the rotor posts. The rotor has electromagnetic elements defining magnetic poles placed between the plurality of rotor posts. An airgap is formed between the rotor and the stator when they are in an operational position. A plurality of rotor flux restrictors are formed on the rotor, and each lies adjacent to one of the opposed ends of the rotor posts.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: October 5, 2021
    Assignee: Genesis Robotics and Motion Technologies Canada, ULC
    Inventor: James Brent Klassen
  • Patent number: 11139755
    Abstract: A variable stiffening device that includes a flexible envelope having a fluid chamber, a dielectric fluid housed within the fluid chamber, and an electrode stack that includes a plurality of electrodes and one or more abrasive strips. The electrode stack is housed within the fluid chamber and is configured to receive voltage. In addition, the one or more abrasive strips are each positioned between adjacent electrodes, such that when voltage is applied to the electrode stack thereby electrostatically drawing adjacent electrodes together, the one or more abrasive strips generate frictional engagement between adjacent electrodes to actuate the variable stiffening device from a relaxed state to a rigid state.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: October 5, 2021
    Assignee: TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC.
    Inventor: Michael P. Rowe
  • Patent number: 11128192
    Abstract: A motor includes a stator a rotor, and a guide member. The stator includes a stator core and multiphase coils wound on the stator core. The guide member is arranged on an end of the stator core located at one side in an axial direction to glide a terminal wire of the multiphase coils wound on the stator core. The guide member includes an outlet guide that draws the terminal wire out of the guide member toward a circuit board. The outlet guide includes insertion holes into which the terminal wire is inserted. The insertion holes each include an inlet located toward the stator core and an outlet. The inlet has a larger open area than the outlet.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: September 21, 2021
    Assignee: DENSO CORPORATION
    Inventors: Koji Hotta, Motoki Uehama
  • Patent number: 11128184
    Abstract: A rotating member comprising a central portion having a center aperture, a first arm extending radially outward from the central portion, the first arm having a length L, a second arm extending radially outward from the central portion, a first magnet mounted on the first arm such that a magnetic field of the first magnet extends into a recess between the first and second arms, and a second magnet mounted on the second arm such that a magnetic field of the second magnet extends into the recess between the first and second arms.
    Type: Grant
    Filed: June 19, 2019
    Date of Patent: September 21, 2021
    Inventor: Michael Cummings
  • Patent number: 11128188
    Abstract: An electric motor has a first carrier having an array of electromagnetic elements and a second carrier having electromagnetic elements defining magnetic poles. The first and second carriers each define an axis. An airgap is formed between the first and second carriers when in an operational position. An inner thrust bearing connects the first and second carriers and is arranged to allow relative rotary motion of the carriers. An outer thrust bearing connects the first and second carriers and is arranged to allow relative rotary motion of the carriers. The electromagnetic elements of each of the first and second carriers are arranged radially inward of the outer thrust bearing and radially outward of the inner thrust bearing. The inner thrust bearing and the outer thrust bearing are arranged to maintain the airgap against a magnetic attraction of the electromagnetic elements of the first and second carriers.
    Type: Grant
    Filed: September 18, 2019
    Date of Patent: September 21, 2021
    Assignee: GENESIS ROBOTICS AND MOTION TECHNOLOGIES CANADA, ULC
    Inventors: James Brent Klassen, Damian Spasov, Bradley Pope
  • Patent number: 11114919
    Abstract: An actuator is provided which comprises an actuator housing having an inside surface defining a stator-receiving portion and a stator. The stator-receiving portion comprises a rotor support element, and plurality of guide projections which are spaced-apart about the rotor support element, the plurality of stator-abutment projections being integrally formed with the inside surface. The stator has a plurality of locator recesses which are engagable with the plurality of stator-abutment projections when the stator is received at the stator-receiving portion of the actuator housing to locate the stator relative to the actuator housing.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: September 7, 2021
    Assignee: JOHNSON ELECTRIC INTERNATIONAL AG
    Inventors: Yvan Bourqui, Daniel Soncini, Frederic Haenni
  • Patent number: 11101748
    Abstract: Provided is a method of manufacturing an electrostatic induction transducer, the method including: providing a conductive substrate; providing a first electret material film on a first surface of the conductive substrate; providing a second electret material film on a second surface of the conductive substrate; forming a through hole that penetrates the conductive substrate, the first electret material film, and the second electret material film; mounting a supported member being conductive to the conductive substrate while allowing the conductive substrate to move in an in-plane direction; and applying charges to the first electret material film and the second electret material film by a charging process.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: August 24, 2021
    Assignee: CITIZEN WATCH CO., LTD.
    Inventors: Toshinari Maeda, Makoto Watanabe, Yasuo Kitajima, Izumi Yamamoto
  • Patent number: 11095234
    Abstract: The present disclosure relates to novel triboelectric nanogenerators with flexible polymeric dielectric layer comprising liquid metal particles, and method of making and using the novel triboelectric nanogenerators.
    Type: Grant
    Filed: October 7, 2019
    Date of Patent: August 17, 2021
    Assignee: Purdue Research Foundation
    Inventors: Wenzhuo Wu, Shengjie Gao
  • Patent number: 11088603
    Abstract: The present invention relates to a line start synchronous reluctance motor and a rotor thereof. To this end, the present invention provides a line start synchronous reluctance motor including: a rotor; a plurality of conductor bars disposed on a side of an outer circumferential portion of the rotor; and flux barriers formed at an inner side of the rotor so as to be close to the conductor bars, wherein the flux barriers, which are formed in separate regions of a body of the rotor that are arranged to have opposite polarities, are formed to be asymmetrical to each other. Therefore, the present invention improves characteristics of the motor through the asymmetrical flux-barrier structure without changing the number of conductor bars, thereby allowing the initial starting of the motor to be smoothly performed, which is advantageous in terms of torque ripple characteristics and die casting.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: August 10, 2021
    Assignee: HYOSUNG HEAVY INDUSTRIES CORPORATION
    Inventors: Su Jin Lee, Liang Fang
  • Patent number: 11081982
    Abstract: A motor assembly including a motor and a control circuit board. The motor includes a housing, a stator assembly, a rotating shaft, and a rotor assembly. The control circuit board includes a first electric wire, a second electric wire, a detection wire, a ground wire, a power supply circuit, a control circuit, and a detection circuit. The first electric wire and the second electric wire are connected to the commercial AC electric supply, and the detection wire detects whether or not a load connected to the motor is electrified. The first electric wire and the second electric wire are connected to the input terminals of the power supply circuit. The detection circuit is disposed between the detection wire and the ground wire. The detection circuit transmits a detection signal to the control circuit, and the control circuit controls the motor to rotate at various rotation speeds.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: August 3, 2021
    Assignee: ZHONGSHAN BROAD-OCEAN MOTOR CO., LTD.
    Inventors: Wenqing Bian, Yuanyao Wu
  • Patent number: 11081977
    Abstract: Provided is an electrostatic-type vibrational energy harvester device that makes it possible to efficiently rectify and charge power from low acceleration to high acceleration of vibrational energy applied from the exterior. The vibrational energy harvester device is provided with: a movable part capable of vibrating in a vibration direction as a result of mechanical vibrational energy, said movable part being provided with a first surface along the vibration direction; and a fixed part provided with a second surface facing the first surface of the movable part with a gap therebetween so that it is possible for the movable part to vibrate in the vibration direction. A plurality of recessed portions and protruding sections are formed in an alternating manner in the vibration direction on the surfaces of each of the first surface of the movable part and the second surface of the fixed part. An electret film is formed on at least one of the fixed part and the movable part.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: August 3, 2021
    Assignees: The University of Tokyo, National University Corporation Shizuoka University, Saginomiya Seisakusho, Inc.
    Inventors: Hiroshi Toshiyoshi, Gen Hashiguchi, Hiroyuki Mitsuya, Hiroshi Imamoto