Patents by Inventor Sigenobu Nakamura

Sigenobu 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).

  • Antifriction bearing and alternator incorporating same for use in vehicles
    Patent number: 5422524
    Abstract: An antifriction bearing includes a fixed ring which comprises a steel containing up to about 10% of residual austenite. An alternator for vehicles includes a stator mounted on a frame, a rotor having its rotary shaft rotatably supported by a pair of bearings on the frame and a drive pulley mounted on one end of the shaft projecting outward from the frame. The outer ring of at least the bearing toward the pulley comprises a steel containing up to about 10% of residual austenite.
    Type: Grant
    Filed: November 16, 1993
    Date of Patent: June 6, 1995
    Assignees: Koyo Seiko Co., Ltd., Nippondenso Co., Ltd.
    Inventors: Sigenobu Nakamura, Tutomu Siga, Kenzo Mitani, Yoshiki Fujita, Masayuki Kitamura, Hiroyuki Miyazaki, Teruo Hoshino
  • Antifriction bearing and alternator incorporating same for use in vehicles
    Patent number: RE38936
    Abstract: An antifriction bearing includes a fixed ring which comprises a steel containing up to about 10% of residual austenite. An alternator for vehicles includes a stator mounted on a frame, a rotor having its rotary shaft rotatably supported by a pair of bearings on the frame and a drive pulley mounted on one end of the shaft projecting outward from the frame. The outer ring of at least the bearing toward the pulley comprises a steel containing up to about 10% of residual austenite.
    Type: Grant
    Filed: January 9, 2002
    Date of Patent: January 17, 2006
    Assignees: Koyo Seiko Co., Ltd., Denso Corporation
    Inventors: Sigenobu Nakamura, Tutomu Siga, Kenzo Mitani, Yoshiki Fujita, Masayuki Kitamura, Hiroyuki Miyazaki, Teruo Hoshino
  • Antifriction bearing and alternator incorporating same for use in vehicles
    Patent number: RE37967
    Abstract: An antifriction bearing includes a fixed ring which comprises a steel containing up to about 10% of residual austenite. An alternator for vehicles includes a stator mounted on a frame, a rotor having its rotary shaft rotatably supported by a pair of bearings on the frame and a drive pulley mounted on one end of the shaft projecting outward from the frame. The outer ring of at least the bearing toward the pulley comprises a steel containing up to about 10% of residual austenite.
    Type: Grant
    Filed: June 5, 1997
    Date of Patent: January 21, 2003
    Assignees: Koyo Seiko Co., Ltd., Denso Corporation
    Inventors: Sigenobu Nakamura, Tutomu Siga, Kenzo Mitani, Yoshiki Fujita, Masayuki Kitamura, Hiroyuki Miyazaki, Teruo Hoshino