Patents by Inventor Jacques Decours

Jacques Decours 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).

  • Method of manufacturing a zirconium-based alloy tube for a nuclear fuel element sheath and tube thereof
    Patent number: 4938921
    Abstract: The present invention relates to a method of manufacturing tubes for a nuclear fuel element sheath, comprising a plurality of successive cold rolling and annealing steps including a final .beta. phase heat treatment consisting of maintaining said tube at a temperature between 950.degree. C. and 1250.degree. C. for a time duration sufficient for obtaining a homogeneous .beta. phase within and throughout the whole thickness of said tube, and rapidly cooling said tube to ambient temperature for retaining said .beta. phase throughout the whole thickness of said tube during subsequent cold processing steps including final cleaning of the tube.
    Type: Grant
    Filed: June 23, 1988
    Date of Patent: July 3, 1990
    Assignees: Framatome, S.N.C. Uranium Pechiney et Framatome
    Inventors: Jean-Paul Mardon, Jacques Decours, Michel Weisz, Jacques Pelchat, Jean Le Pape
  • Sealing device for an extrusion press or a compacting press
    Patent number: 4024743
    Abstract: The sealing device comprises two interengaged members forming a clearance space in which is imprisoned a deformable seal for ensuring pressure-tightness between the members and the internal surface of the press chamber. The member which is in contact with the liquid medium under hydrostatic pressure comprises means for establishing pressure equilibrium within the press chamber and within the clearance space immediately after deformation of the seal.
    Type: Grant
    Filed: October 1, 1975
    Date of Patent: May 24, 1977
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Jacques Decours, Jean Gavinet