Patents by Inventor Joel M. Marcon

Joel M. Marcon 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).

  • Locking device for the breech of an automatic weapon
    Patent number: 5138930
    Abstract: The invention relates to a locking device for the breech of an automatic weapon in which the longitudinal movement of the breech (4) is generated by a rotating drum (1) driven by an external motor.It comprises a locking wedge (6) that moves under the effect of a cam (10) rotated in synchronization with the drum, between a retracted position that allows the free passage of the breech, and a locking position in which the limit surfaces (7,8) working in conjunction on the breech and on the wedge lock the breech in the closed position.
    Type: Grant
    Filed: October 21, 1991
    Date of Patent: August 18, 1992
    Assignee: Giat Industries
    Inventors: Georges H. Simon, Joel M. Marcon, Patrice J. Pichot
  • Controlled percussion device for automatic weapon
    Patent number: 4704945
    Abstract: The field of the invention is that of percussion devices used in automatic weapons.The invention consists of integrating the firing pin 12 with carrier piece 1 during the locking phase and then with the movable bolt head 7 during the recoil phase. The integration means consists of levers 17 pivoting on the firing pin about shaft 18 and bearing on surfaces 23 and 26 on the movable bolt head and counterpin 14, respectively.The invention finds its applications in the field of weaponry and, more particularly, in small- and medium-caliber weapons.
    Type: Grant
    Filed: June 3, 1986
    Date of Patent: November 10, 1987
    Assignee: Etat Francais
    Inventors: Joel M. Marcon, Jacques A. Durant, Georges H. Simon
  • Automatic firearms with external motor
    Patent number: 4167888
    Abstract: This disclosure relates to an automatic firearms having a rotatable drum with helical grooves therein so arranged as to cause a follower guided by said grooves to reciprocate at a speed proportional to the rotational speed of the drum. The reciprocation of the follower causes the breech mechanism to reciprocate between loading and firing positions. The drum is driven by means independent of the propulsion energy of the projectiles fired, and therefore, may be operated at varying speeds by means such as an electric motor or even by hand.
    Type: Grant
    Filed: November 25, 1977
    Date of Patent: September 18, 1979
    Assignee: Etat Francais, as represented by Delegue General pour l'Armement
    Inventors: Jacques M. Pechamat, Joel M. Marcon, Georges H. Simon
  • Firearms with external motor
    Patent number: 4154143
    Abstract: This disclosure relates to an automatic weapon having a breech mechanism driven in reciprocation by an external motor and equipped with a device to keep the breech mechanism from moving from the advanced or forward locked position in case of a hangfire. If a "shot departure" sensor fails to sense the departure of a shot a spring projects bolts into the path of the breech mechanism and locks it at the start of its recoil stroke.
    Type: Grant
    Filed: November 25, 1977
    Date of Patent: May 15, 1979
    Assignee: Etat Francais as represented by Delegue General Armement
    Inventors: Jacques M. Pechamat, Joel M. Marcon, Georges H. Simon