Patents by Inventor Imazawa Kanji

Imazawa Kanji 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).

  • Robotic manipulator including a failure detecting circuit for prohibiting a movable section from being driven
    Patent number: 5404290
    Abstract: A safety operation system for a manipulator is provided with a first operation section. The first operation section has a first movable section, and outputs a first operation signal representing the position and angle of the first movable section. A failure detecting section detects failure of the first operation section on the basis of the first operation signal, and outputs a detection signal. When failure of the first operation section is not detected, a conversion section converts the first operation signal into a control signal. A second operation section has a second movable section which moves in accordance with movement of the first movable section, and outputs a second operation signal generated in accordance with movement of the second movable section. A comparison section compares the control signal with the second operation signal, and outputs a deviation signal used for opening the second movable section.
    Type: Grant
    Filed: December 14, 1993
    Date of Patent: April 4, 1995
    Assignee: Nitto Kohki Co., Ltd.
    Inventors: Akira Tsuchihashi, Yoshishige Nakazawa, Yasushi Watanabe, Imazawa Kanji, Kazuyuki Watanabe