Patents by Inventor Toshiyuki Nakura

Toshiyuki Nakura 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).

  • Method of fixing an annular element on a shaft
    Patent number: 4438555
    Abstract: The present invention relates to a method for fixing an annular element onto a shaft. The shaft may be a camshaft and the annular element may be a cam piece or a journal piece used in an automobile. The annular element is fixed onto the shaft by: engaging an axially extending projection of the element with an axially extending groove of the shaft so as to prevent a relative rotating motion; deforming an outer wall of the shaft adjacent to said groove at two positions near the terminating ends of the projection so that the outer wall protrudes into the groove, thereby fixing the element onto the shaft.
    Type: Grant
    Filed: March 9, 1982
    Date of Patent: March 27, 1984
    Assignee: Toyota Jidosha Kogyo Kabushiki Kaisha
    Inventors: Chiaki Tsumuki, Katsuhiko Ueda, Hitoshi Nakamura, Toshiyuki Nakura, Kazuhiko Tsuda