Patents by Inventor Jean-Pierre Praizey

Jean-Pierre Praizey 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).

  • Nuclear fuel subassembly
    Patent number: 3930940
    Abstract: A nuclear fuel sub-assembly comprises a bundle of fuel pins provided with helical spacers and located within a shroud for the coolant. The sub-channels at the periphery of the bundle are restricted in order that the rate of flow matches the heat transfer surfaces in all sub-channels. For this purpose the spacers of the outer pins project radially by an extent smaller than the spacers of the inner pins. In addition longitudinal ribs may be provided in the outer sub-channels.
    Type: Grant
    Filed: December 10, 1970
    Date of Patent: January 6, 1976
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Andre Cayol, Andre Chalony, Georges Clottes, Jean-Pierre Praizey, Jean Skok, Henri Venobre