Patents by Inventor Katsuyoshi Nukui

Katsuyoshi Nukui 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).

  • Tape drive control apparatus
    Patent number: 4209119
    Abstract: A tape drive control apparatus in which a tape is wound on a capstan rotating at a constant speed and driven by the friction between the capstan and the tape without using a pinch roller. The tape is moved apart from the capstan upon the fast mode such as the fast forward or rewinding mode and upon the stop mode.
    Type: Grant
    Filed: June 12, 1978
    Date of Patent: June 24, 1980
    Assignee: Nippon Columbia Kabushikikaisha
    Inventors: Susumu Kakuta, Katsuyoshi Nukui, Kenji Hiraishi
  • Tape driving apparatus
    Patent number: 4133494
    Abstract: A tape driving apparatus in which even if the radius of a magnetic medium such as a magnetic tape wound on a supply and/or take-up reel is varied, a current flowing in a servo motor coupled directly to a capstan, which is varied in accordance with a load, is utilized to make the speed of the servo-motor constant by controlling a reel motor and hence to make the back tension and take-up tension of the magnetic tape equal.
    Type: Grant
    Filed: June 17, 1977
    Date of Patent: January 9, 1979
    Assignee: Nippon Columbia Kabushikikaisha
    Inventor: Katsuyoshi Nukui