Patents by Inventor Keiichi Harano

Keiichi Harano 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).

  • Rotary electric motor
    Patent number: 4406959
    Abstract: A rotary electric motor of a sealed type comprising a heat pipe in a rotor shaft and a plurality of air vents in a stator. In the operation of this motor, a rotor mounted on the rotor shaft is cooled by the heat pipe and simultaneously, the stator is cooled directly by the air flowing therethrough.
    Type: Grant
    Filed: May 7, 1981
    Date of Patent: September 27, 1983
    Assignee: Fujitsu Fanuc Limited
    Inventors: Keiichi Harano, Shigeki Kawada, Shigeaki Oyama
  • Rotary electric machine with a heat pipe for cooling
    Patent number: 4240000
    Abstract: A rotary electric machine with a heat pipe for cooling, which pipe comprises a rotary shaft. The rotary shaft has a hole formed therein extending from a heating zone to a cooling zone and has working fluid charged therein. The inner diameter of the cooling zone is smaller than the diameter of the heating zone, and an inner wall of the cooling zone is connected to an inner wall of the heating zone via a step.
    Type: Grant
    Filed: November 17, 1978
    Date of Patent: December 16, 1980
    Assignee: Fujitsu Fanuc Limited
    Inventors: Keiichi Harano, Shigeaki Oyama