Patents by Inventor Masaru Yamashita

Masaru Yamashita 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).

  • Check valve apparatus for oil pressure operated clutch
    Patent number: 4271951
    Abstract: There is disclosed a relief valve apparatus for an oil pressure operated clutch having an oil pressure operation chamber, the apparatus comprising a weight in combination with a leaf spring wherein the weight, during rotation of the clutch, is subjected to a centrifugal force and, under the influence thereof, promotes a valve opening force of the leaf spring itself to permit the discharge or dumping or oil contained within the chamber.
    Type: Grant
    Filed: January 30, 1979
    Date of Patent: June 9, 1981
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Sadanori Nishimura, Yoji Yamada, Takeyuki Shimizu, Masaru Yamashita