Patents Assigned to Hitachi Service Eng., Co. Ltd.
  • Current-collecting brush apparatus
    Patent number: 4748363
    Abstract: A current-collecting brush apparatus is disclosed in which brushes are held slidably on a brush holder and pressed against a rotor by a brush-pressing spring. Pigtails connected to supply current to the brushes comprise a plurality of spiral conductors in parallel which are connected by being coiled in mutual opposite directions to offset the magnetic fluxes generated therein.
    Type: Grant
    Filed: February 24, 1987
    Date of Patent: May 31, 1988
    Assignees: Hitachi, Ltd., Hitachi Service Eng., Co. Ltd.
    Inventors: Takashi Watanabe, Masao Ohi, Koji Tanaka, Yoshio Takikawa, Yasuto Kondoh, Satoshi Oouchi