Patents by Inventor Yukitoshi Ihara

Yukitoshi Ihara 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).

  • Numerical control device
    Patent number: 4961034
    Abstract: A numerical control device comprising a lost motion correction data calculating device having a table/function which represents the motor current of a servo motor, in a servo mechanism for servo-controlling a mechanical movable part. The motor current is detected at a given time instant, and the corresponding amount of lost motion correction is then calculated. The position error caused by the lost motion can be corrected with high accuracy.
    Type: Grant
    Filed: March 1, 1989
    Date of Patent: October 2, 1990
    Assignees: Yoshiaki Kakino, Yukitoshi Ihara, Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yoshiaki Kakino, Yukitoshi Ihara, Mitsuo Yonetani, Takeo Teshima