Patents by Inventor Jean L. Tranchant

Jean L. Tranchant 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).

  • Screw extruder
    Patent number: 4089510
    Abstract: A screw extruder comprises a casing connected to a bed, the casing comprising two portions connected together longitudinally by connecting elements. At least one of the casing portions is articulated with respect to the bed, and the connecting elements are adapted to release the connection between the casing portions at a predetermined casing pressure to allow the casing portion to articulate to thereby open the casing.
    Type: Grant
    Filed: September 20, 1976
    Date of Patent: May 16, 1978
    Assignee: Societe Nationale des Poudres et Explosifs
    Inventors: Jacques Picard, Marc Saunier, Jean L. Tranchant
  • Composite propellants with a cellulose acetate binder
    Patent number: 3986908
    Abstract: A composite propellant comprises, by weight:A. from 78 to 92% of an oxidizing agent which is at least one of alkali metal, alkaline earth metal and ammonium chlorates and perchlorates,B. from 7.9 to 17.2% of an organic binder which contains oxygen but not nitrogen, andC. from 0.1 to 0.8% of a carbon-containing combustion regulator.This composite propellant is useful as a gas generator for inflatable cushion protection devices because the gaseous combustion products are substantially free from toxic gases.
    Type: Grant
    Filed: June 25, 1973
    Date of Patent: October 19, 1976
    Assignee: Societe Nationale des Poudres et Explosifs
    Inventors: Robert O. Grebert, Jacques Picard, Jean L. Tranchant