Patents by Inventor Motoki SHIMOGAWA

Motoki SHIMOGAWA 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).

  • Rotor for rotating electrical machine
    Patent number: 10923973
    Abstract: A rotor for a rotating electrical machine includes a cylindrical rotor core configured to be arranged radially inside of a stator with a coil wound therearound. An outer circumferential surface of the rotor core is opposed to the stator with a gap therebetween. The rotor core has a plurality of magnetic pole regions in a circumferential direction and also has, in each of the magnetic pole regions, a flux barrier extending along q-axis magnetic paths. An inner wall of the flux barrier has a radially outer wall surface and a radially inner wall surface. The radially inner wall surface is broadened to be closer to the adjacent magnetic pole region than a position along the q-axis magnetic paths.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: February 16, 2021
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Naotaka Toida, Taizo Kusadome, Motoki Shimogawa
  • ROTOR FOR ROTATING ELECTRICAL MACHINE
    Publication number: 20180054098
    Abstract: A rotor for a rotating electrical machine includes a cylindrical rotor core configured to be arranged radially inside of a stator with a coil wound therearound. An outer circumferential surface of the rotor core is opposed to the stator with a gap therebetween. The rotor core has a plurality of magnetic pole regions in a circumferential direction and also has, in each of the magnetic pole regions, a flux barrier extending along q-axis magnetic paths. An inner wall of the flux barrier has a radially outer wall surface and a radially inner wall surface. The radially inner wall surface is broadened to be closer to the adjacent magnetic pole region than a position along the q-axis magnetic paths.
    Type: Application
    Filed: March 8, 2016
    Publication date: February 22, 2018
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Naotaka TOIDA, Taizo KUSADOME, Motoki SHIMOGAWA