Patents by Inventor Masahito SHIRAHASE

Masahito SHIRAHASE has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Stator and electric motor with cancel coil for reducing unbalanced magnetic flux
    Patent number: 10511200
    Abstract: A stator for a electric motor, the stator including: a stator core including a yoke having an annular shape, and a plurality of teeth protruding from an inner circumferential surface of the yoke in a stator radial direction; a stator coil wound around the teeth, the stator coil being configured to generate a rotating magnetic field as a current is applied thereto; and a cancel coil extending in a stator axial direction at positions on the inner circumferential side and the outer circumferential side relative to the yoke, the cancel coil being wound around the stator core so as to extend in the stator radial direction and traverse the yoke at positions outside the stator core in the stator axial direction, and constituting one or more closed circuits.
    Type: Grant
    Filed: January 11, 2017
    Date of Patent: December 17, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hirofumi Kinjo, Masahito Shirahase, Toru Wakimoto, Takeshi Tomonaga, Hiroyuki Hattori
  • STATOR AND ELECTRIC MOTOR
    Publication number: 20170207673
    Abstract: A stator for a electric motor, the stator including: a stator core including a yoke having an annular shape, and a plurality of teeth protruding from an inner circumferential surface of the yoke in a stator radial direction; a stator coil wound around the teeth, the stator coil being configured to generate a rotating magnetic field as a current is applied thereto; and a cancel coil extending in a stator axial direction at positions on the inner circumferential side and the outer circumferential side relative to the yoke, the cancel coil being wound around the stator core so as to extend in the stator radial direction and traverse the yoke at positions outside the stator core in the stator axial direction, and constituting one or more closed circuits.
    Type: Application
    Filed: January 11, 2017
    Publication date: July 20, 2017
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hirofumi KINJO, Masahito SHIRAHASE, Toru WAKIMOTO, Takeshi TOMONAGA, Hiroyuki HATTORI