Patents by Inventor Masahide Sunada

Masahide Sunada 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).

  • Die cushion device for press
    Patent number: 5435166
    Abstract: A die cushion device which is compact and simple construction to be constructed at low cost, comprises a pad arranged in a head of the press and supporting a lower die from below, and a cushion mechanism supporting the pad and providing a cushion force by controlling a servo motor. It is also possible to preliminarily assembly the pad and the cushion mechanism to use as a unit.
    Type: Grant
    Filed: December 10, 1993
    Date of Patent: July 25, 1995
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventor: Masahide Sunada