Patents by Inventor Takasi Yamamoto

Takasi Yamamoto 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).

  • Commutator for a starter motor
    Patent number: 4871936
    Abstract: A commutator 4 for a starter motor comprises a plurality of segments 4a electrically connected to armature coils 3, an insert member 4b fitted to an armature shaft 2, and a glass-fiber-reinforced phenol resin 4c molded to integrate the segments with the insert member, wherein mica particles in a range of 5%-10% by weight are uniformly contained in the resin.
    Type: Grant
    Filed: September 20, 1988
    Date of Patent: October 3, 1989
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yoshifumi Akae, Takasi Yamamoto, Koji Arima, Tetsuo Yagi