Patents by Inventor Gilbert H. K. Nguyen

Gilbert H. K. Nguyen 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).

  • Method of inspecting the operation of a valve and mechanical test bench for performing the method
    Patent number: 4566310
    Abstract: Method and a device for inspecting the operation of a valve. The valve (1, 11) is placed on a test bench (2, 3) capable of applying an opening and closing force to the valve, a representative graph of the movement of the valve as a function of the force applied is plotted, the coordinates of which are measured continuously, and the graph of the test is compared with a reference graph (C.sub.1) in order to detect operating defects according to the positions of the valve. The invention is applicable to the inspection of valves for passing fluids, more specifically in the nuclear industry.
    Type: Grant
    Filed: March 10, 1983
    Date of Patent: January 28, 1986
    Assignee: Framatome & Cie
    Inventors: Serge Cohen, Gilbert H. K. Nguyen