Patents by Inventor Michel Berthet

Michel Berthet 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).

  • Thermoelectric heat exchanger assembly for transferring heat between a gas and a second fluid
    Patent number: 4306426
    Abstract: In a heat pump, thermoelements (20,22) are disposed in a thermopile (P1) and are electrically connected in series. Heat is transferred horizontally from the thermopile and vertical air ducts (28) at its sides by suitable arms (42) prolonging heat conductors inside the thermopile. The arms or webs serve to convey heat to heat exchange fins. Application to domestic heating.
    Type: Grant
    Filed: March 25, 1980
    Date of Patent: December 22, 1981
    Assignee: Compagnie Europeenne pour l'Equipement Menager "CEPEM"
    Inventors: Michel Berthet, Jean-Claude Kermarrec, Robert Ravelet
  • Thermoelectric heat exchanger including a liquid flow circuit
    Patent number: 4281516
    Abstract: The invention relates to a thermoelectric heat exchanger assembly including a liquid flow circuit. In a heat pump some of whose thermoelements (20,22) are disposed in a thermopile (P1), one of the heat exchange fluids is liquid and flows through the successive stages of the thermopile via a continuous metal tube (10) which has electrical resistance and is curved in a U configuration at each stage so as to increase the heat exchange area and to facilitate assembly. Application to domestic heating.
    Type: Grant
    Filed: March 25, 1980
    Date of Patent: August 4, 1981
    Assignee: Compagnie Europeenne pour l'Equipement Menager "CEPEM"
    Inventors: Michel Berthet, Jean-Claude Kermarrec, Robert Ravelet
  • Current lead-in device for superconducting rotary electrical machines
    Patent number: 4134037
    Abstract: A current lead for a superconducting rotary machine is constituted by a copper tube having a superconducting conductor fastened (e.g. by soldering) to a portion of its length, the entire length of the tube having copper cooling plates each of which blocks the bore of the tube leaving only a small hole for the passage of gaseous or hypercritical helium. The current lead is particularly applicable to the generation of electric power using cryoalternators.
    Type: Grant
    Filed: October 26, 1977
    Date of Patent: January 9, 1979
    Assignees: Alsthom-Atlantique, Electricite de France - Service National
    Inventors: Michel Berthet, Roger Gillet, Andre Marquet, Francois Moisson-Franckhauser
  • 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
  • Electric rotating machine having a cryo-inductor
    Patent number: 4020371
    Abstract: An electric rotating machine whose inductor operates at very low temperat and is separated from the rotor by an empty space, characterized in that a reflector screen constituted by a layer of thermally conductive strips connected together at their axial ends by thermally conductive connection parts to a cooled structure, is inserted in that empty space.
    Type: Grant
    Filed: April 15, 1975
    Date of Patent: April 26, 1977
    Assignees: Societe Generale de Constructions Electriques et Mecaniques (ALSTHOM), Electricite de France
    Inventors: Roger Gillet, Michel Berthet, Francois Moisson-Franckhauser