Patents by Inventor Satoru Nejigane

Satoru Nejigane 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).

  • Apparatus and method for forming spirally wound stator core or rotary electric machine
    Patent number: 6308549
    Abstract: An apparatus for forming a spirally wound stator core includes a pair of forming rollers having a wedge-shaped gap therebetween, a winding drum, a drum-drive motor, and a roller presser. A strip of magnetic material is inserted into the wedge-shaped gap to be pressed at a controlled pressure so that the strip is bent into a spiral with one side of the strip being radially inside. The controlled pressure is changed automatically according to a memorized relationship between the rotation speeds of the pair of forming rollers and suitable pressures applied to the strip.
    Type: Grant
    Filed: November 15, 1999
    Date of Patent: October 30, 2001
    Assignee: Denso Corporation
    Inventors: Takashi Tokizawa, Katsumi Nagasaka, Masahiro Asano, Toshihiko Fujimoto, Katsumi Matsumoto, Katsuyoshi Shiraishi, Kazutaka Maeda, Satoru Nejigane