Patents by Inventor Tatuei Sawaguchi

Tatuei Sawaguchi 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).

  • Rotary fluid pressure cylinder device for operating chucks for machine tools
    Patent number: 4669362
    Abstract: A power cylinder for operating a chuck for a machine tool has a rotary cylinder casing, a pair of check valves for confining a pressure fluid in an operating chamber, accumulators for absorbing impacts of the pressure fluid, and detecting means for detecting the fluid pressure in the operating chamber. The power cylinder can be rotated in a state wherein the feeding and discharging of the pressure fluid is stopped.
    Type: Grant
    Filed: May 6, 1985
    Date of Patent: June 2, 1987
    Assignee: Kabushiki Kaisha Kitagawa Tekkosho
    Inventors: Akira Nobukawa, Kojiro Oota, Tatuei Sawaguchi