Patents by Inventor Junzo Koyasu

Junzo Koyasu 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).

  • Rotary knife
    Patent number: 5099733
    Abstract: Disclosed is a hydraulically fixable flange, which is detachable by expansion and contraction of the internal bore employing hydraulic fluid, in which a hydraulic chamber is provided within the flange body, and a hole for supplying hydraulic fluid, which is connected to the outside from the hydraulic chamber, is also provided, together with valve system provided between the hydraulic chamber and the hole for supplying hydraulic oil so that the system can supply pressurized oil to the hydraulic chamber from outside. Also, there is disclosed a rotary knife provided with the hydraulically fixable flange.
    Type: Grant
    Filed: November 1, 1989
    Date of Patent: March 31, 1992
    Assignee: Mitsubishi Materials Corporation
    Inventors: Tatsunori Kobayashi, Mutsumi Yasutake, Junzo Koyasu, Makoto Hasegawa, Masayuki Inoue