Patents by Inventor Georges Dupont

Georges Dupont 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).

  • Valves with non-lubricated plug
    Patent number: 4326697
    Abstract: Valves or cocks with rotary plug in which the plug is provided with flexible gaskets of annular shape located symmetrically with respect to the plane passing through the axis of rotation of the plug and the axis of the cylindrical conduit of the plug, sealing seats borne by the valve body, the seats being arranged in such a manner that they come into contact with the gaskets borne by the plug when the latter is in closed position.
    Type: Grant
    Filed: March 20, 1980
    Date of Patent: April 27, 1982
    Inventors: Roger Autage, Georges Dupont