Abstract: A switch barrel recoil lug for clamping together a rifle action and a rifle barrel having a body with a barrel shank bore hole and a split section allowing expansion and contraction of the barrel shank bore hole, an index pin hole or threaded holes for aligning and connecting the body to the rifle action and a stock flange for engaging a rifle stock wherein the barrel shank bore hole has a tapered surface matching a tapered surface on a barrel shank of the rifle barrel.
Abstract: A machine gun assembly includes, but is not limited to, a receiver, a barrel extension, and an interlock element. The barrel extension is mounted to the receiver and moves between forward and retracted positions with respect to the receiver. The barrel extension is configured for quick-release engagement with a barrel. The interlock element is mounted to the receiver and moves between a blocking position and a clear position. The interlock element has a blocking portion positioned to obstruct movement of the barrel extension to the forward position while in the blocking position and the blocking portion is positioned to permit movement of the barrel extension to the forward position while in the clear position. The interlock element moves to the blocking position when the barrel disengages from the barrel extension and moves to the clear position when the barrel is correctly engaged with the barrel extension.
September 6, 2013
Date of Patent:
August 1, 2017
General Dynamics—OTS, Inc.
Michael J. Lyman, Jason Knight, Jonathan Piazza, Peter C. Wolff, David B. Stouffer
Abstract: A revolver for firing high velocity ammunition includes a frame, a cylinder, a barrel, and a firing mechanism. The revolver may include one or more of the following, each of which is especially adapted for use in the context of firing high velocity ammunition: spacers for adjusting a barrel-cylinder gap, for eliminating broaching of the rearward surface(s) of the barrel; a forcing cone formed in the rearward opening of the barrel for accommodating deformed projectiles; a reflective surface (e.g., mirrored surface) provided on the cone and/or barrel rearward surfaces, for reducing erosion resulting from using high velocity ammunition; gain-twist rifling in the barrel for a smoother transition to full projectile velocity; a larger diameter, hardened firing pin bushing for minimizing brass flow in the rearward direction; and a front sight assembly that minimizes lateral shift or drift of the sight pin during firing.
November 10, 2005
Date of Patent:
August 14, 2007
Smith & Wesson Corp.
Jason Robert Dubois, Simon Michael Muska, Gary E. Zukowski, John W. Avedisian, Brett Curry
Abstract: In a weapon, in particular a self-loading pistol, having a barrel (1) and a breech block (4), it being possible for a cartridge (2) to be fired in the barrel (1) by being acted upon by means of a firing pin (7), to identify a fired cartridge (2) and/or to increase the precision during the shot, a contact region (10) of the breech block (4) with the cartridge (2) has at least one prominence (11) and/or recess (12).
Abstract: The shooting device, such as a revolver, has a housing with a barrel-receiving opening defined therein. A cylinder and a barrel are attached to the housing. The barrel has a rear section with a cylindrical segment that slidably engages the cylindrical segment. A spring has one end attached to the rear section of the barrel and a second opposite end attached to the cylindrical valve for urging the valve against a groove section of the cylinder so there is a tight fit between the valve and the cylinder during the firing of the bullet. This prevents any pressure loss when the bullet is fired.