Patents by Inventor Masakazu Zyogahara

Masakazu Zyogahara 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).

  • Structure for mounting damper on rotary shaft
    Patent number: 4943263
    Abstract: A damper consisting of two damper pieces capable of being disposed around a rotary shaft and two sets of bolts and nuts. The damper is mounted on the rotary shaft by connecting the two damper pieces by the bolts and nuts. Each of the damper pieces has a mass portion having an inner peripheral surface diverging toward an opening end so as to be out of contact with the rotary shaft and a mounting portion having rigidity lower than that of the mass portion and adapted to be in contact with the rotary shaft when the damper is mounted on the rotary shaft.
    Type: Grant
    Filed: March 23, 1989
    Date of Patent: July 24, 1990
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Masakazu Zyogahara, Shinichi Yokoyama, Hisashi Yamanaka