Patents by Inventor Norihiro Oki

Norihiro Oki 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).

  • Brush holding device for electric rotary machine
    Patent number: 4355254
    Abstract: A brush holding device for an electric rotary machine for holding a brush electrically connecting the stationary part of the electric rotary machine to a rotating slip ring, the device comprising a brush box supported on the stationary part to accommodate the brush therein, a main wall detachably mounted on a main post extending from the brush box, a brush retaining element in the form of a band for retaining the brush in the brush box, a handle for carrying the main wall together with the brush, and a manipulating lever for unlockably locking the main wall to the brush box, whereby the brush can be easily and simply replaced.
    Type: Grant
    Filed: November 4, 1980
    Date of Patent: October 19, 1982
    Assignees: Hitachi, Ltd., Hitachi Chemical Co., Ltd.
    Inventors: Norihiro Oki, Shoji Motegi, Yasuyuki Wachi, Yoshio Takikawa, Norio Yamakawa