Patents by Inventor Katashi Aoki, deceased

Katashi Aoki, deceased 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).

  • Clamping mechanism in an injection molding machine
    Patent number: 4981426
    Abstract: A clamping mechanism which includes a cylinder and a piston. The diameter of the piston is less than the internal diameter of a rear chamber of the cylinder such that fluid flows around the piston when the piston moves from an open position to an intermediate position. The diameter of the piston is equal to the internal diameter of a front chamber of the piston such that fluid cannot flow around the piston when the piston moves from the intermediate position to a closed position. To prevent cavitation within the cylinder, fluid is charged to the cylinder in accordance with the movement of the piston.
    Type: Grant
    Filed: October 27, 1988
    Date of Patent: January 1, 1991
    Inventor: Katashi Aoki, deceased
  • Rotary type injection blow molding machine
    Patent number: 4941816
    Abstract: This invention relates to a rotary type blow molding machine which forms a working space between an intermittently rotatable transfer plate (14) above a machine bed having lip molds (15) at three locations on the lower surface thereof and the machine bed, the three locations on the machine bed of the working space forming three working stages, i.e.
    Type: Grant
    Filed: December 19, 1988
    Date of Patent: July 17, 1990
    Inventors: Katashi Aoki, deceased, by Satoru Kimura, heir