Patents by Inventor Patrick Lhuillery

Patrick Lhuillery 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).

  • Ball valve
    Patent number: 4676480
    Abstract: A ball valve comprising a valve body defining inlet and outlet sections, and a ball with a calibrated through-port. The valve further comprises a stem to rotate the ball between open and closed positions, a seal to insure a fluid tight closure of the valve when the ball is in the closed position, and a mechanism for retracting the seal. This seal retracting mechanism is selectively coupled to the stem, and the mechanism eliminates all contact, when the valve is in the open position, (i) between the ball and the seal, and (ii) between the stem and the seal retracting mechanism.
    Type: Grant
    Filed: January 6, 1986
    Date of Patent: June 30, 1987
    Assignee: Societe Anonyme: Societe Europeenne de Propulsion
    Inventors: Patrick Garceau, Patrick Lhuillery, Paul Dumont