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
Abstract: An externally powered carrier for an automatic weapon wherein rotary movement of an electric motor is translated into fore and aft movement of the carrier by means of an eccentrically positioned motor driven pin moving laterally in a transverse carrier cam track.
Type:
Grant
Filed:
September 6, 1977
Date of Patent:
May 15, 1979
Assignee:
The United States of America as represented by the Secretary of the Army
Abstract: In a rotary-cam operated weapon a locking and firing structure that distrtes the firing load symmetrically about the longitudinal axis of the weapon to eliminate nonsymmetrical stresses, and to coordinate the locking and firing timing relationships.
Type:
Grant
Filed:
August 1, 1977
Date of Patent:
February 27, 1979
Assignee:
The United States of America as represented by the Secretary of the Army
Abstract: A drum cam for reciprocating the operating group of an externally powered apon, wherein hang-fire is prevented by transferring the cam follower to a separate cam path when the group is in in-battery position, and the follower dwells until a chambered round has fired before permitting the operating group to recoil.
Type:
Grant
Filed:
July 5, 1977
Date of Patent:
December 26, 1978
Assignee:
The United States of America as represented by the Secretary of the Army
Abstract: A firing chamber lock and unlock mechanism for automatic large caliber wens having a reciprocable firing chamber and rotatable cam means for both actuation of the locking and unlocking functions and actuation of the reciprocation of the firing chamber synchronized to the firing cycle requirements of the weapon system.
Type:
Grant
Filed:
June 30, 1976
Date of Patent:
January 3, 1978
Assignee:
The United States of America as represented by the Secretary of the Army
Abstract: A liquid propellant modular gun has a slim profile and is constructed for wide latitude in gun cluster configuration.The modular gun has a stationary barrel and is externally driven and cam operated by a drive cam and a control cam.The drive cam has one internal spiral cam track for driving the bolt forward to a projectile firing position and another internal spiral cam track for driving the bolt rearward to a projectile loading position.The control cam is mounted for rotation at the forward end of the drive cam and controls the injection of liquid propellant into the combustion chamber and an electrical igniter.A water injection mechanism is also associated with the control cam for injecting a small amount of water into the combustion chamber after the firing of each round to cool the combustion chamber structure by internal water cooling. The water injection mechanism is also effective to purge propellant from the combustion chamber in the event of a misfire.
Type:
Grant
Filed:
September 25, 1975
Date of Patent:
December 13, 1977
Inventors:
Lester C. Elmore, Thomas M. Broxholm, deceased, by Anne K. Broxholm, administratrix
Abstract: A cartridge feed, positioning and ejection control system for automatic wons having a reciprocable firing chamber.Stepped cam paths on a rotatable cam actuator control sequential operation of a feed stop pawl and an ejection stop pawl synchronized to movement of the firing chamber to produce the feed, etc., functions.
Type:
Grant
Filed:
June 30, 1976
Date of Patent:
August 2, 1977
Assignee:
The United States of America as represented by the Secretary of the Army
Abstract: An injection system for a liquid propellant gun including coaxial flow vas giving complete mixing of two propellant components by convergent streams, wherein ullage is eliminated by closely contouring the valves with the gun chamber and the flow valves are automatically controlled by action of the propellant pump.
Type:
Grant
Filed:
September 12, 1975
Date of Patent:
November 23, 1976
Assignee:
The United States of America as represented by the Secretary of the Navy
Inventors:
Bruce Bartels, John W. Holtrop, Larry L. Liedtke, Russell T. Trovinger