Patents by Inventor Jacques M. Pechamat

Jacques M. Pechamat 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).

  • 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