Patents by Inventor Fumio Koshiji

Fumio Koshiji 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).

  • Press
    Patent number: 4669298
    Abstract: A press comprises a bed affixed to a frame, a slide vertically movably provided above the bed, a lower cushion mounted to the underside of the bed and having chambers, an upper cushion mounted to the slide and having chambers, a pneumatic hydraulic control circuit for a pressure source of each of the cushions, and a control for controlling individually the pressure within the chambers, wherein a complicated workpiece can be formed in one stroke of the slide.
    Type: Grant
    Filed: September 25, 1986
    Date of Patent: June 2, 1987
    Assignee: Amada Company, Limited
    Inventors: Shigeyoshi Kono, Yoshimitsu Tsutsui, Fumio Koshiji, Tomohiko Sawayanagi