Patents by Inventor Masayuki Kuwayama

Masayuki Kuwayama 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).

  • Rotating electric machinery
    Patent number: 4446391
    Abstract: A rotating electric machinery comprises a stator; a rotor which is fixed to a rotor shaft and is driven by said motor; a fan which is rotatably connected through a bearing to said rotor to feed air in a predetermined direction; and at least one pair of magnets having a predetermined magnetic force which are fixed on either said rotor or said fan and a magnetic substance having a predetermined coercive force which is fixed on said fan or on said rotor to face said magnet with a desired gap.
    Type: Grant
    Filed: October 22, 1981
    Date of Patent: May 1, 1984
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yasuhiro Sekine, Masayuki Kuwayama, Hiroshi Harada