Patents by Inventor Philippe Charvin

Philippe Charvin 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).

  • Actuator usable in a fluid under high pressure
    Patent number: 4706596
    Abstract: An actuator usable in a first fluid under a high pressure, e.g. on board a submarine operating at great depths to release or jettison ballast and wherein the first fluid is external to the submarine, comprises a plunger which is mobile by means of a spring and is held in place by a locking member. The plunger, its spring and the locking member are located within a frame which is filled with a second fluid, while a flexible skirt and two deformable sleeves enable the pressure of the second fluid to adapt constantly to that of the first fluid.
    Type: Grant
    Filed: December 19, 1985
    Date of Patent: November 17, 1987
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Philippe Charvin, Paul Vavasseur