Patents by Inventor Sumio Shirai

Sumio Shirai 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).

  • Patent number: 11973405
    Abstract: A stator for a rotating electric machine includes a stator core, a coil having a coil end, a cooling jacket that is attached to the stator core so as to house the coil end in the cooling jacket and that allows cooling oil to flow therethrough, introduction parts, and discharge parts. The coil end includes first portions, extending parallel to an end surface of the stator core, and pairs of second portions, each pair being connected to both ends of a corresponding one of the first portions, the pairs extending in a direction parallel to an axial direction. The cooling jacket includes an inner circumferential wall and an outer circumferential wall. The introduction parts are provided on the outer circumferential wall, and the discharge parts are provided on the inner circumferential wall.
    Type: Grant
    Filed: November 23, 2021
    Date of Patent: April 30, 2024
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Sumio Shirai, Daichi Maruyama
  • Publication number: 20220190683
    Abstract: A stator for a rotating electric machine includes a stator core, a coil having a coil end, a cooling jacket that is attached to the stator core so as to house the coil end in the cooling jacket and that allows cooling oil to flow therethrough, introduction parts, and discharge parts. The coil end includes first portions, extending parallel to an end surface of the stator core, and pairs of second portions, each pair being connected to both ends of a corresponding one of the first portions, the pairs extending in a direction parallel to an axial direction. The cooling jacket includes an inner circumferential wall and an outer circumferential wall. The introduction parts are provided on the outer circumferential wall, and the discharge parts are provided on the inner circumferential wall.
    Type: Application
    Filed: November 23, 2021
    Publication date: June 16, 2022
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Sumio SHIRAI, Daichi MARUYAMA
  • Patent number: 10777335
    Abstract: A coated electric wire for winding that includes an insulation coating including appropriate pores in a resin to suppress erosion due to partial discharge is provided. The present disclosure relates to a coated electric wire for winding that includes a conductor and an insulation coating that coats a periphery of the conductor, wherein the insulation coating includes a constant volume of pores having an average diameter equal to or more than a pore diameter (A) obtained by a specific measuring method.
    Type: Grant
    Filed: January 22, 2020
    Date of Patent: September 15, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yukiko Nakano, Sumio Shirai, Yoshinobu Murakami
  • Publication number: 20200243217
    Abstract: A coated electric wire for winding that includes an insulation coating including appropriate pores in a resin to suppress erosion due to partial discharge is provided. The present disclosure relates to a coated electric wire for winding that includes a conductor and an insulation coating that coats a periphery of the conductor, wherein the insulation coating includes a constant volume of pores having an average diameter equal to or more than a pore diameter (A) obtained by a specific measuring method.
    Type: Application
    Filed: January 22, 2020
    Publication date: July 30, 2020
    Inventors: Yukiko NAKANO, Sumio SHIRAI, Yoshinobu MURAKAMI
  • Publication number: 20050260437
    Abstract: A composite material for brazing has a brazing layer provided on a surface of a base metal. The brazing layer satisfies a requirement represented by formula: W1/W2=0.58 to 0.68 wherein W1 represents the weight of an Ni (nickel) ingredient contained in the brazing layer; and W2 represents the total weight of the Ni ingredient and a Ti (titanium) ingredient contained in the brazing layer.
    Type: Application
    Filed: May 20, 2005
    Publication date: November 24, 2005
    Applicant: Hitachi Cable, Ltd.
    Inventors: Kazuma Kuroki, Hiromitsu Kuroda, Hideyuki Sagawa, Sumio Shirai