Patents by Inventor Yasuo Nagatani

Yasuo Nagatani 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).

  • Digital speed control method and apparatus
    Patent number: 4334175
    Abstract: In a speed control method for digitally controlling the speeds of motors in a sectional drive system including the steps of setting a speed difference of each section with respect to a line speed reference, the speed difference set value is varied by pressing a push button switch and varying the speed difference set value by a unit value every unit operation time when the button switch is pressed.
    Type: Grant
    Filed: June 29, 1979
    Date of Patent: June 8, 1982
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Hiroichiro Tanaka, Yasuo Nagatani