Patents by Inventor Naruto Sugimoto

Naruto Sugimoto 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).

  • Friction member used in vibration wave driving apparatus, and device using the vibration wave driving apparatus as driving source
    Patent number: 6320299
    Abstract: A friction member is used in a friction portion in a vibration wave driving apparatus. The friction member comprises a composite resin which comprises polytetrafluoroethylene as a matrix and which further comprises at least an inorganic fiber substance and a heat-resistant resin. A ratio of a content Vf (vol %) of the inorganic fiber substance to a content Vr (vol %) of the heat-resistant resin satisfies the following relation: ⅓≦Vf/Vr≦3.
    Type: Grant
    Filed: January 7, 2000
    Date of Patent: November 20, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koji Kitani, Naruto Sugimoto
  • Image forming apparatus comprising ultrasonic motors
    Patent number: 6141515
    Abstract: The present invention relates to an image forming apparatus which forms the multiple image by transferring the color toner images onto the transfer material sequentially. In such apparatus the drive source is provided for each image bearing member to rotate it. The ultrasonic motor is suitably used as the drive source and is attached to the rotary shaft thereof to detect rotating condition of the motor.
    Type: Grant
    Filed: January 16, 1997
    Date of Patent: October 31, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kenji Takeda, Naruto Sugimoto, Norio Matsui
  • Sheet feeding device
    Patent number: 5085423
    Abstract: An improved sheet feeding device of this invention includes a variable pressure applying unit for changing a contact pressure between a sheet and vibration members.
    Type: Grant
    Filed: June 27, 1990
    Date of Patent: February 4, 1992
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshifumi Nishimoto, Masahiko Igaki, Kenichi Kataoka, Naruto Sugimoto, Hiroyuki Seki, Atsushi Kimura