Patents by Inventor Kiyoji Hachisu

Kiyoji Hachisu 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).

  • Apparatus for upward and downward movement of an arm in a robot system for taking out injection molded and die casting products
    Patent number: 4682930
    Abstract: An apparatus connected to an arm in a robot system removes injection molded and die cast products while compensating for the load on the piston rods of the apparatus. A chuck for grasping the products is moved up and down by a pair of pneumatic cylinders on a frame and intermediate frame. The pneumatic cylinders carry the load of the various elements of the apparatus. In order to eliminate variations in the load carried by the cylinders and absorb the shock at the ends of the cylinder strokes, the apparatus includes surge tanks connected to the cylinders. Compressed air is provided through the surge tanks to provide an upward pressure offsetting the load on the cylinders.
    Type: Grant
    Filed: October 15, 1985
    Date of Patent: July 28, 1987
    Assignee: Ichikoh Engineering, Ltd.
    Inventor: Kiyoji Hachisu