Patents by Inventor Kousei Nakamura

Kousei Nakamura 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 a built-in motor
    Patent number: 4804872
    Abstract: A rotor of a built-in motor includes a shaft having a stepped part and a sleeve having a hollow space arranged to cover the stepped part of the shaft and a hydraulic pressure supply means. The sleeve is fitted with the shaft at the stepped part. A core is fitted with the sleeve. Hydraulic pressure applied to the hollow space within the sleeve via the hydraulic pressure supply means loosens the fit between the sleeve and the shaft, thereby allowing the shaft to be readily removed from the sleeve and core portion.
    Type: Grant
    Filed: September 30, 1987
    Date of Patent: February 14, 1989
    Assignee: Fanuc Ltd.
    Inventors: Kousei Nakamura, Takashi Yoshida
  • Welded stator using non-magnetic bars in specially shaped lamination slots
    Patent number: 4485320
    Abstract: A stator of an electric motor comprises a laminated iron-core (1) having dovetail grooves, end plates (2) and steel bars (3) which are accommodated in the dovetail grooves and have a trapezoidal shape in cross-section. The steel bars (3) are arc-welded to the laminated iron-core (1) and to the end plates (2).
    Type: Grant
    Filed: May 6, 1983
    Date of Patent: November 27, 1984
    Assignee: Fanuc Ltd.
    Inventors: Shigeki Kawada, Shigeaki Oyama, Kousei Nakamura, Jiro Nakano