Class 42/39.5 - Movable chamber

Subclass of Class 42 - Firearms
Definition: Firearms having a chamber which is movable relative to the
No. of patents: 27
Last issue date: 10/28/2008

Number	Title	Issue Date
7441362	Firearm with force sensitive trigger and activation sequence Firearms include a specially designed trigger capable of verifying a user's identity so that only an authorized user can discharge the firearm. In some embodiments, a user is identified by matching a signal representing force applied to the trigger as a function of ...	10/28/2008
7137217	Auto-loading firearm mechanisms and methods Automatic and semi-automatic firearms of remarkably reduced mass yet capable of long-range accuracy because of unique recoil reduction are characterized by (A) a temporary combination of a barrel, an integral breech and a separable chamber that in operation of the f...	11/21/2006
6898888	Cartridge chambering system for firearms This invention provides two broad features. First, there is a firearm having a movable ramp (20) for receiving a cartridge (12a) stripped from a magazine (10) thereon. The ramp (20) is situated behind and below the firing chamber (...	05/31/2005
6481137	Revolving firearm In a revolving firearm having a barrel and a rotating cartridge cylinder actuated by an axially slidable pump-action type foregrip, indexing means are provided for converting the back and forth movement of the foregrip into a stepwise rotational movement ...	11/19/2002
6257115	Magazine and feed mechanism for firearms A magazine and compact feed mechanism for firearms includes an end cap on the magazine to keep cartridges from falling out and a stop mechanism for preventing a rotating cartridge transfer disk from traveling beyond 90°. The magazine is placed in a horiz...	07/10/2001
6243978	Device for controlling the feeder system of pump-action shotguns A device for controlling the feeder system of pump-action shotguns having a breech-block which is operatively associated, by virtue of two braces, with a cocking rod (3) moving between two stroke limit positions of the breech-block, a closed position and ...	06/12/2001
6234058	Semiautomatic pocket gun and ammunition Semiautomatic pistol which is small enough to be carried in a pocket or otherwise concealed on the body of a person, and caseless ammunition for use in the pistol. The pistol has a grip adapted to be held in the hand of a shooter, a barrel extending in a ...	05/22/2001
5996265	Disposable weapon system A disposable weapon system includes at least one ammunition round having a projectile, a propellant charge, and a casing strong enough to withstand the firing forces of the ammunition round containing the propellant charge and for securing and sealing the...	12/07/1999
5974941	Semi-automatic revolver An automatic revolver has a body, a barrel arranged in the body and having an inner passage provided with a thread-like formation, an ammunition-containing element from which a bullet is displaced into the barrel, the barrel being turnable relative to the...	11/02/1999
5937558	Electronically discharged and gas operated firearm An electrically discharged and gas operated firearm basically has of a main body with a gun barrel being attached to a front surface. A chute is defined vertically through the main body. A cartridge holding cassette slides into the chute. The cassette fun...	08/17/1999
5924230	Resilient breech firearm A firearm which exhibits the geometric inability to jam. Further, the nature of the described firearm insures increased safety, versatility of calibers, ease of loading, higher potential capacity, unique gas operations, and reduced perceived recoil, over ...	07/20/1999
5784821	Electrically discharged and gas operated firearm An electrically discharged and gas operated firearm basically has of a main body with a gun barrel being attached to a front surface. A chute is defined vertically through the main body. A cartridge holding cassette slides into the chute. The cassette fun...	07/28/1998
5610362	Ammunition feed device and method A mechanism for feeding ammunition in a small arm includes a linkage, a rotating member and a magazine follower. The small arm includes a barrel, a breech that moves under recoil and a magazine that extends approximately parallel to the barrel. The linkag...	03/11/1997
5416999	Delta weapon system (DWS) This invention relates to a lightweight, shoulder-fired, flat-trajectory, disposable, multi-shot weapon system. In particular, this invention relates to a disposable weapon system which is designed to shoot ammunition rounds capable of penetrating one inc...	05/23/1995
5299373	Hand-gun with moving cartridge chamber magazine The hand-gun comprises a grip (3), a barrel (1) connected to the grip, a movable cartridge chamber magazine (4) comprising at least two cartridge chambers (7) to receive cartridges, said magazine (4) being pushable into a slide (12) inside the grip (3), a...	04/05/1994
5036611	Weapon housing for a firing weapon A weapon housing for a firing weapon including a front portion and a rear portion in which the front and rear portions are spaced apart by means of a plurality of bands. The weapon barrel is carried by the front portion and the firing device is carried by...	08/06/1991
4949493	Firearm A firearm comprises a chamber member, which is separate from the barrel and defines a chamber and which in a firing block, which is fixed to the receiver, is reciprocable between a firing position and a loading position in a direction which is transverse ...	08/21/1990
4934244	Rotary chamber automatic pistol A battery powered rotary chamber pistol, suitable for firing 60 rounds per second of 22 caliber cartridges contained in a thin flexible belt without removing the cartridges from the belt....	06/19/1990
4760663	Firearm A firearm comprises a housing, a barrel extending in a first direction, a chamber structure, a trigger and firing means, wherein the chamber structure is constituted by a chamber member, which is separated from the barrel and is movable in the housing in ...	08/02/1988
4739570	Firearm A firearm (1) comprises a housing (2), a barrel (3), means defining a chamber (5), and a firing mechanism including a trigger (10). The chamber (5) is defined by a chamber member (4), which is separate from the barrel (3) and is mounted in the housing (2)...	04/26/1988
4599817	Signal pistol The disclosure relates to a signal pistol which is furnished with a magazine for storing blank cartridges, which magazine can be transported by means of a transport latch arrangement. There is also disclosed an insert for shooting or firing of the signal ...	07/15/1986
4453329	Firearms with rotary magazines A firearm especially for firing large calibre rounds such as rubber bullets and having a rotary magazine which is rechargeable at any stage of depletion. A loading arm serves to guide rounds through an inlet opening in the magazine, in such a way that the...	06/12/1984
4266358	Underwater firearm An underwater firearm for discharging self-propelled projectiles incorporates a swing arm for simultaneously loading a projectile from a magazine into the firing chamber and cocking the firing pin. Guide means in the firing chamber automatically engages a...	05/12/1981
4026212	Open chamber gas powered tool and gas generating charge therefor An open chamber gas powered tool and gas generating charge for the tool. The charge has a hollow open-ended plastic jacket of uniform noncircular cross-section from end to end containing a propellant, such as nitrocellulose, which may be electrically igni...	05/31/1977
4004363	Rotatable cartridge chamber for firearm type weapon A rotatable cartridge chamber for a firearm type weapon in which the chamber is rotatable in the weapon at the rear end of the barrel and has cartridge chambers therein. The chamber receives cartridges from a magazine parallel to and adjacent the barrel i...	01/25/1977
3997994	Shoulder arm with swivel breech member A shoulder arm, such as a rifle, having a breech member which can be swivelled about an axis which is perpendicular to the axis of the barrel for loading the breech member contains a firing chamber which is in alignment with the barrel in is firing positi...	12/21/1976

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Class 42/39.5 - Movable chamber