Patents by Inventor Pierre-Jean Sartor

Pierre-Jean Sartor 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).

  • Hairpin spring for nuclear fuel assembly and grid including such springs
    Patent number: 4844862
    Abstract: A hairpin spring for holding a fuel rod in a fuel assembly grid consists of a metal strip bent to form two mutually confronting legs arranged to be welded together locally. At least in a zone which bears on the other leg, one of the legs is U-shaped and straddles the other leg through a respective window of the grid. The legs of the U may be formed as appendices bent substantially at 90.degree.. The arms may also close up slightly so that the other leg can snap thereinto or flare for self-centering of the other arm.
    Type: Grant
    Filed: January 29, 1988
    Date of Patent: July 4, 1989
    Assignees: Framatome, Compagnie Generale des Matieres Nucleaires
    Inventor: Pierre-Jean Sartor