Patents by Inventor Jean-Paul Lechanteur

Jean-Paul Lechanteur 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).

  • Priming chamber for a firearm cartridge
    Patent number: 5148749
    Abstract: On the inside of a cylindrical envelope, an anvil projects from the base of the envelope and has a flat central member extending parallel to an axial plane of the envelope. Flash-holes are formed in the flat areas of the base on either side of the central member so as to create passages in the vicinity of the axial plane of the cylindrical envelope. The central member has two extensions which have a tapered upper portion and connect to the top of the flat central member, forming a relatively flat end, the lower part of the anvil being connected to the cylindrical envelope, forming an integral part of it.
    Type: Grant
    Filed: November 28, 1990
    Date of Patent: September 22, 1992
    Inventors: Felix-Victor Maes, Jean-Paul Lechanteur