Patents by Inventor Kazuhiko Shirane

Kazuhiko Shirane 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 engines
    Patent number: 5894824
    Abstract: A piston for an internal combustion engine includes a ring land formed with a piston-ring groove, and a skirt connected to the ring land so that the piston-ring groove is adjacent thereto, the skirt being formed with a piston-pin hole with an axis, and having a plane including the axis of the piston-pin hole. A taper is formed on the skirt in a first portion thereof nearer to the ring land than the plane to converge on the ring land.
    Type: Grant
    Filed: February 28, 1997
    Date of Patent: April 20, 1999
    Assignee: Unisia Jecs Corporation
    Inventors: Hiroaki Watanabe, Kazuhiko Shirane, Shingo Motoda, Hideyuki Miyasaka
  • 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