Patents by Inventor Fumio Jiyoraku

Fumio Jiyoraku 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).

  • Rotor of Permanent Magnet Rotating Electric Machine
    Publication number: 20100231078
    Abstract: A permanent magnet rotating electric machine has a stator provided with a plurality of windings, and a rotor in which magnets are disposed in slots formed in a rotor core along an outer circumference thereof. The rotor core is fixed on a rotary shaft rotating inside the stator, and one magnetic pole is constituted by each group of three or more of the magnets. A total angle occupied by the group of magnets constituting one magnetic pole is in the range of 150 to 165 degrees in terms of an electrical angle.
    Type: Application
    Filed: May 26, 2010
    Publication date: September 16, 2010
    Applicant: Hitachi, LTD
    Inventors: Tsukasa TANIGUCHI, Hiroyuki Mikami, Satoshi Kikuchi, Fumio Jiyoraku, Hideyuki Harada