Patents by Inventor Thierry Dupre

Thierry Dupre 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).

  • Rifle-firable training grenade and rifle-grenade firing instruction system
    Patent number: 5257936
    Abstract: Completely inert training grenade intended to be fired by a rifle and a propellant cartridge, comprising a metal tube (1) equipped with a rear stabilizing tail unit (2) and with a front solid part (3) which closes off the tube. This front part (3) carries a hollow nose (4) containing a marking substance (5), this nose (4) being fastened removably by engagement to the front solid part (3) of the tube. The nose (4) is sufficiently resistant to withstand the shot, but is destructible on impact. The solid front part (3) of the tube is produced in one piece with the tube, the diameter of this part being substantially equal to or slightly larger than that of the rest of the tube. The nose (4) engaged on this solid front part has an inner annular shoulder (11) bearing on the front surface (3a) of the solid part (3) of the tube, and the front end of the nose (4) is flat. The nose (4) is shaped so that its wall can break in the event of its impact on the ground.
    Type: Grant
    Filed: April 13, 1993
    Date of Patent: November 2, 1993
    Assignee: Luchaire Defense S.A.
    Inventors: Francois Ambrosi, Pierre Laurent, Thierry Dupre