Patents by Inventor Tatuo Totani

Tatuo Totani 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).

  • Fluid coupling having high sealability
    Patent number: 4660868
    Abstract: Disclosed is a cap-nut fluid type coupling wherein piping welded to said coupling is less liable to twist or does not twist at all when the cap nut is tightened. The fluid joint coupling for clamping the cap nut has a ring-shaped groove formed on the contacting surface of the sleeve with the cap nut to rotatably hold the small spheres in the groove.
    Type: Grant
    Filed: December 3, 1985
    Date of Patent: April 28, 1987
    Assignee: Toyoko Kagaku Co., Ltd.
    Inventor: Tatuo Totani