Patents by Inventor Shinji Mitsuta

Shinji Mitsuta 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).

  • Vibration reducer for transfer apparatuses
    Patent number: 5688103
    Abstract: This invention aims at reducing the vibration occurring during a motion of a vacuum transfer apparatus in a transfer press, and preventing the misfeeding of a workpiece. To achieve this object, accelerometers (30, 32) are set on one of lift bars (1) and a crossbar (21) laid laterally on a crossbar carrier (20) on each of right and left lift bars (1), and they are connected to a controller (34) through integrators (31, 33). An actuator (10) is provided on a drive rod (8) via which a lift lever (7) and a lift box (3) are connected together, and a hydraulic servo-valve (11) and the controller (34) are connected to each other through a servo-amplifier (35).
    Type: Grant
    Filed: September 21, 1995
    Date of Patent: November 18, 1997
    Assignee: Komatsu Ltd.
    Inventors: Hideki Tsuji, Hiroyuki Ito, Shinji Mitsuta, Kenji Nishida, Naoyuki Kanayama