Patents by Inventor Hideo Kemuyama

Hideo Kemuyama 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).

  • Torsional damper
    Patent number: 5123624
    Abstract: A torsional damper comprises a pulley hub fixed to a rotary shaft such as the crank shaft of an engine or the like, and a damper mass fixed, by means of a damping rubber, in a cavity formed in the front portion of the pulley hub. A projection is provided on the outer circumference of the damper mass, and a groove is formed in the pulley hub oppositely to the projection to receive a part of the projection.
    Type: Grant
    Filed: December 21, 1990
    Date of Patent: June 23, 1992
    Assignee: Bridgestone Corporation
    Inventors: Tomoyuki Kurata, Hideo Kemuyama