Patents by Inventor Sakae Tsunashima

Sakae Tsunashima 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).

  • Sliding members and piston for internal combustion engine
    Patent number: 6523456
    Abstract: A sliding surface of at least one of sliding members sliding with respect to each other in a sliding direction comprises a protrusion extending along a direction intersecting the sliding direction and fine dimples provided on a surface of the protrusion. In the sliding members, lubricating oil is accumulated in the dimples, and is easily extracted through a drain portion formed by dimple in a running-in operation.
    Type: Grant
    Filed: May 3, 2001
    Date of Patent: February 25, 2003
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Shigemi Kobayashi, Masashi Murata, Hidemi Ogihara, Hiroshi Yamada, Kazuhisa Ishizuka, Sakae Tsunashima