Patents by Inventor Kunikazu Yanagisawa

Kunikazu Yanagisawa 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).

  • Motor-operated press mechanism
    Patent number: 5666850
    Abstract: In a motor-operated press mechanism, a rocking link is rockingly supported by a supporting shaft which is pivotally supported by a top plate of a press machine, while a crank shaft which supports a crank is supported on one end portion of the rocking link, and a drive section is provided on another end portion of the rocking link, which, in a press working operation, regulates the position of the rocking link so that the crank shaft, the supporting shaft, and the press ram are substantially on a straight line, and, in a resetting operation, swings the rocking link so that the press ram is moved to a retracting position above the position where it is located in the press working operation.
    Type: Grant
    Filed: November 20, 1995
    Date of Patent: September 16, 1997
    Assignee: APIC Yamada Corporation
    Inventors: Kunikazu Yanagisawa, Shin Ando