Class 89/188 - Rotary locking member

Subclass of Class 89 - Ordnance
Definition: Guns with a breech block locking member rotatable about
No. of patents: 38
Last issue date: 02/01/2011

Number	Title	Issue Date
7878107	Locking and recocking assembly with swivel breech-lock and rotating locking head, particularly for inertially-actuated weapons using the kinetic energy of recoil A locking and recocking assembly with swivel breech-lock and rotating locking head particularly designed for inertially-actuated weapons, which combines in a single assembly all the functions for locking, opening, case ejection and recocking with locking return, req...	02/01/2011
7770507	Method and apparatus for an action system for a firearm A method and apparatus providing an action system for a semi-automatic shotgun including a receiver having an ejection port for expelling an empty cartridge of a fired projectile. The action system includes a bolt attached to a bolt carrier, wherein the bolt and the...	08/10/2010
7311032	Firearms with gas pressure loading mechanisms Firearms employing gas pressure loading mechanisms are disclosed. An example firearm includes a single force receiving component containing a gas cylinder, and a barrel in communication with a cartridge chamber received in the force receiving component. The cartridg...	12/25/2007
7299737	Method and apparatus for an action system for a firearm A method and apparatus providing an action system for a firearm. The action system includes a primary roller-lock mechanism located rearward of an ejection port. The primary roller-lock mechanism includes a bolt and a first primary roller caged within the bolt. A bo...	11/27/2007
7237469	Firearms having a locked breech Firearms having a locked breech are disclosed. An example firearm includes a barrel; a bolt head; a firing pin having a bulge; a bolt head carrier having a forward position and a rearward position; a central force receiving component receiving a rear end of the barr...	07/03/2007
7219461	Bolt assembly with locking system A locking system for firearms including a locking ring rotatably mounted to a bolt. As the bolt is moved through a bolt slide, the locking ring engages a cam member, which causes the locking ring to rotate about the bolt, which can remain fixed against rotation....	05/22/2007
7107715	Bolt assembly with locking system A locking system for firearms including a locking ring rotatably mounted to a bolt. As the bolt is moved through a bolt slide, the locking ring engages a cam member, which causes the locking ring to rotate about the bolt, which can remain fixed against rotation....	09/19/2006
7000345	Underbarrel shotgun A shotgun comprises a receiver made from a first material; barrel having a portion extending into the receiver and made from a second material; a collar nut securing the barrel to the receiver; a bolt assembly disposed within the receiver and including a locking blo...	02/21/2006
6978709	Breech device for bolt action firearms A breech device for bolt-action firearms includes a breech body reciprocating in the receiver and rotatable into locking position. In its front part, the breech body has locking lugs located in three sectors, the locking lugs in at least two sectors being formed in ...	12/27/2005
6971202	Gas operated action for auto-loading firearms A gas operated action for auto-loading guns may comprise a receiver, a biasing spring, a bolt-carrier reciprocable within the receiver, a bolt having a cam pin, and an action rod fixedly attached to the receiver. The cam pin may engage the action rod during recoil t...	12/06/2005
6938534	Locking assembly for firearm simulators A bolt locking assembly for a weapon simulator, the weapon simulator having a bolt affixed to a firearm housing providing recoil to the user. The bolt is connected to a piston housed in a piston chamber inside the housing. A gas supply provides a compressed gas or f...	09/06/2005
6912807	Firearms safety device The invention relates to a safety device and a securing method, in particular for securing firearms against unauthorised use. A device according to the invention is provided with at least one clamping or locking portion that is insertable into a barrel 100 of...	07/05/2005
6910404	Gun bolt locking mechanism A carrier assembly for a gun comprises a gun bolt carrier disposed to reciprocate axially with respect to the central axis of the gun, and a gun bolt disposed to reciprocate axially within the carrier. The gun bolt has a locking groove therein. The assembly also com...	06/28/2005
6708437	Apparatus for loading a cartridge into a cartridge chamber An apparatus for loading a cartridge into a cartridge chamber of a firearm is provided. The apparatus includes a barrel, and a bolt assembly mounted for movement from a rear position to a forward position to advance a cartridge into the cartridge chamber. The bolt a...	03/23/2004
6634129	Modified bolt assembly and firing mechanism for an MG 34 Mauser rifle The present invention is a modified bolt assembly and firing mechanism for creating a replica MG 34 Mauser rifle. The present invention provides for an MG 34 replica which fires from a closed bolt firing weapon, and is capable of only semi-automatic opera...	10/21/2003
6530306	Closed bolt firing delayed blowback automatic handgun firearm A telescopic breech bolt and breech bolt receiver for a closed bolt firing delayed blowback automatic firearm featuring, a thumbwheel operated rotating safety device which, locks the firing pin and the breech bolt with one single action....	03/11/2003
6484430	Multi-lugged bolt carrier and barrel for rifles An improved bolt, bolt carrier and barrel assembly for rifles is described. This invention provides bolt mechanism that has heavier lugs on each side of the extractor to distribute the forces more equally and reliably and thereby reducing firearm failure ...	11/26/2002
6415701	Forward mounted breech locking mechanism A two-barrel gun for firing two types of ammunition includes a single breech locking mechanism for both barrels. The gun includes a selector lever for activating one of two bolts associated with the two barrels, and a single trigger for firing ammunition ...	07/09/2002
6393961	Straight-pull breechblock with rotating boss locking mechanism for repeating weapons Straight-pull breechblock (20) with rotating-boss locking mechanism for repeating weapons, having a breechblock head (27) which is guided in a longitudinally and rotationally movable manner in a breechblock housing (22) and has locking bosses (42, 43), an...	05/28/2002
6135005	Multiple-barrel, repeating firearm A two-barrel gun for firing two types of ammunition includes a single breech locking mechanism for both barrels. The gun includes a selector lever for activating one of two bolts associated with the two barrels, and a single trigger for firing ammunition ...	10/24/2000
6129000	Firearm, in particular a hand firearm A firearm, in particular a hand firearm is proposed having a displaceable barrel (23) and a locking mechanism between a bolt carriage (22) accepting the barrel and a guide rod (26) coupled to the barrel (23), wherein the unlocking is effected through rota...	10/10/2000
6101919	Interlocked firearm A sleeve made of spring plate is positioned between the mushroom head and the breechblock carrier of a locked firearm. The sleeve is supported in the expanded state between the mushroom head and the breechblock carrier and, thus, prevents their being push...	08/15/2000
6044748	Breech bolt assembly for a firearm Reliability of a multi-lug breech bolt is improved by modifying the bearing relationship between the bolt lugs and the matching lugs within a gun receiver. This procedure is applied to a gun that has a receiver housing a breech bolt and an extractor. The ...	04/04/2000
5983774	Machine gun A gas-operated firearm having a novel bolt construction that includes a locking roller that delays momentarily the action of the bolt upon the firing of the firearm, such delay permitting the bullet to exit the barrel before the bolt can move. The delay i...	11/16/1999
5920028	Self-loading rifle with a rotatable breech block head A locking mechanism for a self-loading hand-held firearm includes a breech block carrier mounted for sliding movement in the longitudinal direction of the weapon and a breech block head which is rotatable about a longitudinal axis between a locked positio...	07/06/1999
5911173	Breech bolt assembly for a firearm Reliability of a multi-lug breech bolt is improved by modifying the bearing relationship between the bolt lugs and the matching lugs within a gun receiver. This procedure is applied to a gun that has a receiver housing a breech bolt and an extractor. The ...	06/08/1999
5886281	Breech block control for firearm for projectiles The invention concerns a firearm for receiving and firing a projectile. The firearm includes an integral casing having a barrel and a breech block receiving area to the rear of the barrel. A breech block is guided through the breech block receiving area b...	03/23/1999
5722194	Weapon bolt A weapon bolt has a bolt head which accommodates an axially slidable firing pin and which is rotatable and displaceable parallel to the barrel axis. A bolt handle is pivotally supported on an axle carried in a radial orientation by a control sleeve which ...	03/03/1998
5398593	Breech lock, especially for hand firearms A bayonet-connector-like breech lock has a breech housing and a breech block with at least two radially projecting locking components. The enlarged region needed to rotate the locking components takes the form of an annular space wherein a locking sleeve ...	03/21/1995
4926739	Polymer gun operating handle An automatic or semi-automatic pistol is made substantially of polymer materials. The pistol includes polymer upper and lower receivers and a polymer barrel attached to the upper receiver. The operating mechanism includes a bolt, block and a hammer, slida...	05/22/1990
4703826	Polymer gun An automatic or semi-automatic pistol is made substantially of polymer materials. The pistol includes polymer upper and lower receivers and a polymer barrel attached to the upper receiver. The operating mechanism includes a bolt, block and a hammer, slida...	11/03/1987
4253378	Gas operated automatic weapon A belt-fed, gas-operated automatic weapon of a type in which the gas pressure developed in the barrel bore during firing is ported just forward of the barrel chamber to be utilized to compress a system of opposing spring sets which in turn operate the var...	03/03/1981
4210060	Gas operated automatic weapon A belt-fed, gas-operated automatic weapon of a type in which the gas pressure developed in the barrel bore during firing is ported just forward of the barrel chamber to be utilized to compress a system of opposing spring sets which in turn operate the var...	07/01/1980
4173170	Police firearm This invention relates to firearms of the type disclosed in my prior U.S. Pat. No. 3,198,077, granted Aug. 3, 1965, in which the bolt does not turn and the action is locked by turning the receiver. The principal parts, such as floating ring receiver pisto...	11/06/1979
4172410	Helical lock for automatic gun A helical lock for an automatic gun operated by a rotating drum wherein a cking ring and mating end of the chamber have helical surfaces, whereby upon rotating the locking ring to locked position, the chamber is snugly urged into the barrel in its battery...	10/30/1979
4141276	Locking and firing mechanism for rotating-cam actuated weapons 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....	02/27/1979
4123963	Firearm and caseless ammunition therefor A firearm for firing caseless ammunition includes a barrel, a receiver, a bolt, and a firing pin. The bolt includes laterally open pockets for receiving a projectile and a separate propellant cartridge. The bolt carries an extractor to extract unspent pro...	11/07/1978
3955470	Bolt operating and locking mechanism for closed breech rocket gun A closed breech rocket gun has a tubular bolt with an outwardly extending lug thereon for locking the bolt in its forwardly projected position as the lug is shifted into engagement with an abutment wall on the receiver by means of a bolt operating plate g...	05/11/1976

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Class 89/188 - Rotary locking member