Patents by Inventor Hideo Yoshimura

Hideo Yoshimura 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).

  • Piston for internal combustion engine
    Patent number: 5404792
    Abstract: A piston for an internal combustion engine comprises at least a pair of ribs arranged between an inner surface portion of a skirt and side portions of pin bosses. The ribs are symmetrical with respect to a thrust center line of the piston and have in a longitudinal direction thereof a center line which is positioned to be lower than an axis of a piston pin.
    Type: Grant
    Filed: December 14, 1993
    Date of Patent: April 11, 1995
    Assignee: Unisia Jecs Corporation
    Inventors: Hiroaki Watanabe, Kazuhiko Shirane, Hideo Yoshimura
  • Aluminum alloy piston
    Patent number: 5158052
    Abstract: An abrasion and scuff resistant piston comprises a piston main body of aluminum alloy, a ring groove for retaining a piston ring, an abrasion resistant nickel plate layer covering at least the ring groove, a piston skirt, also of aluminum alloy and an abrasion resistant steel plate layer covering the lower outer circumference of the piston including the piston skirt.
    Type: Grant
    Filed: February 21, 1992
    Date of Patent: October 27, 1992
    Assignee: Atsugi Unisia Corporation
    Inventor: Hideo Yoshimura