Patents by Inventor Christian Lehuen

Christian Lehuen 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).

  • Rotating machine using a cooling fluid supplied by a rotating seal
    Patent number: 4101793
    Abstract: The circulation of a low temperature cooling fluid is insured by thermal hon effect in a cryoalternator from within a closed loop circuit containing an inner rotating seal of the "bayonet" type with a very small radial gap. Longitudinal and radial piping within the rotor permits internal circulation of cooling fluid by thermal siphon effect across the "bayonet" type rotating inner seal in the absence of positive circulation by leakage of the coolant across the inner seal radial gap.
    Type: Grant
    Filed: July 20, 1976
    Date of Patent: July 18, 1978
    Assignees: Societe Generale de Constructions Electriques et Mecaniques Alsthom S.A., Electricite de France, Service National
    Inventors: Michel Berthet, Roger Gillet, Yves Laumond, Christian Lehuen, Andre Marquet