Patents by Inventor Shundou Yamaguchi

Shundou Yamaguchi 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).

  • Frictional engaging piston and spring seat
    Patent number: 8181762
    Abstract: An annular frictional engaging piston includes an annular pressure apply portion which pushes a frictional engagement element in an axial direction against urging force of a return spring that urges in a direction opposite the frictional engagement element, and which has a cutout portion where a portion in the circumferential direction has been removed to avoid interference between the piston and another member. A partially removed region is provided, and a mounting hole for mounting the return spring on the piston is provided in a region other than the partially removed region.
    Type: Grant
    Filed: January 27, 2009
    Date of Patent: May 22, 2012
    Assignees: Toyota Jidosha Kabuskiki Kaisha, Aisin AW Co., Ltd.
    Inventors: Terasu Harashima, Shundou Yamaguchi
  • FRICTIONAL ENGAGING PISTON AND SPRING SEAT
    Publication number: 20090188768
    Abstract: An annular frictional engaging piston includes an annular pressure apply portion which pushes a frictional engagement element in an axial direction against urging force of a return spring that urges in a direction opposite the frictional engagement element, and which has a cutout portion where a portion in the circumferential direction has been removed to avoid interference between the piston and another member. A partially removed region is provided, and a mounting hole for mounting the return spring on the piston is provided in a region other than the partially removed region.
    Type: Application
    Filed: January 27, 2009
    Publication date: July 30, 2009
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN AW CO., LTD.
    Inventors: Terasu Harashima, Shundou Yamaguchi