Sliding And Swinging Patents (Class 89/23)
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Publication number: 20140251118Abstract: A bolt assembly with improved rotating locking head, comprising a rotating locking head associated with a bolt body and movable with respect to the bolt body with a combined rotary and translational motion; the rotating locking head having at least two working positions: a closed position, wherein the rotating head closes the breech of the firearm, and an open position, wherein the rotating head is at a distance from the breech; the bolt assembly has an auxiliary pusher that biases the rotating head from the open position to the closed position.Type: ApplicationFiled: February 25, 2014Publication date: September 11, 2014Applicant: BENELLI ARMI S.P.A.Inventor: Luigi Moretti
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Patent number: 7849777Abstract: A firearm with an improved breech bolt assembly comprises a barrel (12), a breech bolt assembly (18, 21), a body (14) equipped on opposite sides with ports (15) for the ejection of a cartridge case, in addition to a magazine (17), wherein the breech bolt assembly, which is moveable with respect to the body (14) comprises a breech bolt-holder slide (21), a breech bolt (18) equipped with a rotating locking head (25), cam guide rails (26, 27) of the relative movement between the breech bolt (18) and slide (21), and also stopping means (28, 29) of the relative movement comprising a control pin (28) which can be moved vertically with respect to a first control seat (29), charged by a recoil spring (30) applied between the slide (21) and the pin (28), said pin (28) having a cocking handle (23), or reloading lever, rotatingly applied thereto, for the manual moving of the breech bolt assembly (10).Type: GrantFiled: October 3, 2008Date of Patent: December 14, 2010Assignee: Fabbrica D'Armi Pietro Beretta S.p.A.Inventor: Ulrich Zedrosser
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Patent number: 7506571Abstract: This invention relates to a breech assembly of a gun adapted to fire caseless charges, ignited and enhanced with electrothermal chemical (ETC) charges. The gun utilizes charges as propellant and a plasma generator cartridge (PGC) for generating plasma when an electrical current is applied thereto. The breech assembly comprises a breech ring, a tilting block assembly, with a spindle installed and a sliding block for supporting or locking the tilting block assembly in a sealed position. The tilting block assembly is movable between a PGC firing orientation and a PGC loading/removal orientation. The breech assembly further includes a crank means, which includes a guide means for rotating the tilting block assembly from the PGC firing orientation to the PGC loading/removal orientation.Type: GrantFiled: February 20, 2003Date of Patent: March 24, 2009Assignee: Denel (PTY) Ltd.Inventors: Frederik Gert Johannes Breytenbach, Ernst Johann Heinrich Müller
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Patent number: 6223643Abstract: According to the invention there is a provided an obturation assembly for a gun of the type comprising a barrel of which a rear end defines a firing chamber having an obturation seat and the gun further having a breechblock, the obturation assembly comprising: an obturation set including an annular obturator pad for sealing against the obturation seat; an obturation spindle having a shaft and a head, the shaft extending coaxially through the obturator pad; a first shim for location between the obturation set and the breechblock, and a second shim for location between the obturation set and the head of the obturation spindle.Type: GrantFiled: January 11, 1999Date of Patent: May 1, 2001Assignee: Denel (Proprietary) LimitedInventor: Ernst Johann Heinrich Müller
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Patent number: 5591932Abstract: The break action cannon invention disclosed herein enables weaponization and integration of complex fire control systems concurrent with projectile loading operations in a gun system such that superior firing cycle and efficient power and thermal management are achieved. A barrel is detachably shifted and tipped at an angle to accept a projectile while breech operations and other firing preparations proceed unencumbered.Type: GrantFiled: May 9, 1994Date of Patent: January 7, 1997Assignee: FMC Corp.Inventors: Richard W. Staiert, James E. Wildman