Patents by Inventor Claude Alaphilippe

Claude Alaphilippe 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).

  • Fluid pressure devices
    Patent number: 4832317
    Abstract: A fluid-pressure device for example a bellows-type spring, in which a terminal portion of the spring is compressed between an end member (4) and an annular pressure piece (11) to provide a fluid-tight seal and an additional fluid-tight seal is provided by welding mutually opposed joint surfaces (16,13) of the end member and the annular pressure piece. The end member and the pressure piece may be of thermoplastic material and welded together by ultrasonic or friction welding.
    Type: Grant
    Filed: February 25, 1983
    Date of Patent: May 23, 1989
    Assignee: Dunlop Limited a British Company
    Inventor: Claude Alaphilippe