Patents by Inventor Yasuto Kondoh

Yasuto Kondoh 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).

  • Drier for drying internal cooling gas of electric machine
    Patent number: 5992154
    Abstract: A drier has a cooler block for drying internal cooling gas circulated in an electric machine, and the temperature of the cooler block is controlled by a thermoelectric device having Peltier effect and keep a constant temperature being near freezing point and not below the freezing point of dew drop contained in the gas.
    Type: Grant
    Filed: February 20, 1997
    Date of Patent: November 30, 1999
    Assignees: Hitachi Ltd., Hitachi Engineering & Services Co., Ltd.
    Inventors: Seiji Kawada, Yasuto Kondoh, Michio Sasaki, Hiroyuki Kido, Tetsuya Hashimoto
  • 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