Patents by Inventor Shigeru Yagisawa

Shigeru Yagisawa 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).

  • Nut holding thrust bearing and highly hermetical sealing fluid joint with the same nut
    Patent number: 4811976
    Abstract: A nut adapter to be formed to hardly twist a pipe welded to a cap nut clamping fluid joint or eliminate the twist of the pipe when clamping the cap nut of the fluid joint, and a fluid joint having the nut. This nut holds a thrust bearing at a position of the nut, corresponding to the surface of the nut for pressing a sleeve when clamping the nut so that, when an unreasonable force is applied, the nut and the sleeve rotate together so as not to transmit a rotary torque to the pipe.
    Type: Grant
    Filed: June 23, 1987
    Date of Patent: March 14, 1989
    Assignee: Toyoko Kagaku Co., Ltd.
    Inventor: Shigeru Yagisawa