Class 89/29 - PRACTICE BARRELS

Subclass of Class 89 - Ordnance
Definition: Small barrels adapted to be inserted in the bore of larger
No. of patents: 59
Last issue date: 05/17/2011

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Number	Title	Issue Date
7942090	Enhanced operating life blank fire attachment for gas-operated weapons An blank firing attachment, with enhanced operating life, for use with gas-operated weapons; wherein, a tungsten carbide stem extending from the attachment is inserted into the bore of the weapon's barrel, the stem having a cross-sectional area less than the cross-s...	05/17/2011
7926405	Simulated firearm A simulated firearm for discharging a blank cartridge and generating a realistic flash and report from the muzzle. The simulated firearm of the present invention prevents the discharge of lethal cartridges or projectiles. The simulated firearm has a chamber 65	04/19/2011
7681483	Sub-caliber in-bore weapons training apparatus A sub-caliber in-bore device placed within a launching structure of a larger caliber weapon system used to simulate the firing and ballistic trajectory of a larger and relatively more expensive weapons round. The said device essentially comprises a smaller caliber w...	03/23/2010
7658138	Practice barrels for use with practice cartridges Practice barrels for use with practice cartridges are described herein. An example practice device for use with self-loading grenade launchers includes a practice barrel having a practice cartridge chamber to receive a practice cartridge. A live cartridge does not c...	02/09/2010
7421934	Mortar tube for training A training mortar apparatus includes a small mortar tube and a large mortar tube, the small mortar tube being disposed in the large mortar tube; a removable base cap attached to one end of the small mortar tube; a plug inserted in the removable base cap; a removable...	09/09/2008
7380363	Replaceable blank firing barrel A blank firing barrel for use with handguns is disclosed. The blank firing barrel is sized to be substituted for an existing live-ammunition firing barrel in a handgun. The blank firing barrel can be machined from a solid block of metal such as stainless steel so th...	06/03/2008
7380488	Blank firing adapter for combination gas and recoil operated weapon A firing adapter for a combination gas and recoil operated weapon includes a blank firing barrel attached to the weapon; a piston having a barrel end and an anchor end, the barrel end being reciprocably disposed in the blank firing barrel and the anchor end being fi...	06/03/2008
7353741	Gun barrel assembly A firearm barrel assembly having a gun barrel with a muzzle opening on a distal end, a shroud coaxially surrounding at least a portion of the barrel, the shroud having a distal portion extending beyond the muzzle opening defining a shroud front region having a dista...	04/08/2008
7340987	Conversion platform for a .45 ACP pistol A method of modifying a .45 ACP pistol having a slide and a receiver defining a magazine well includes the steps of reducing the size of the magazine well and shortening the slide. The slide includes a breech face and a proximal end and the magazine well includes a ...	03/11/2008
7278358	Non-lethal marking bullet for related training cartridges A projectile of non-lethal composition includes an outer casing that is substantially sealed prior to impact with a target both when the projectile is in a static condition and when the projectile is in a dynamic condition. A marking material is encapsulated within ...	10/09/2007
7225741	Reduced energy training cartridge for self-loading firearms A two piece, two-stage, rechargeable, reusable, reduced-energy mechanically operating cartridge is provided for launching a bullet of various compositions from a dedicated or modified firearm. The cartridge unit is comprised of a primary case, a piston sleeve, a pro...	06/05/2007
7207273	Buckshot round A buckshot round for use in large, smooth-barreled weapons, such as an M203 or M79 grenade launcher, wherein the round itself acts as the firing barrel. In particular, a lethal buckshot round is provided, wherein an inner metal cylinder (barrel portion) is encased i...	04/24/2007
7140301	Forming temporary airborne images A temporary airborne image is formed by the steps of arranging a plurality of projectiles in each of one or more barrel assemblies wherein the projectiles include image forming matter; firing a predetermined number of the plurality of projectiles from selected barre...	11/28/2006
7121035	Sight-preserving, partially self-cleaning, divergent-axis caliber conversion in handguns A conversion kit for converting a semi-automatic or self-loading handgun of a certain caliber, such as a Colt .45, is modified to allow the use therein of cartridges of a different, usually smaller caliber, thus to allow less expensive training on the handgun, where...	10/17/2006
7076904	Detachable gun barrel assembly A detachable gun barrel assembly having an adapter for threaded engagement with the receiver and a barrel dimensioned for affixation to the adapter. The adapter has a mating end section which threadedly engages the receiver V-threads and a receiving end section havi...	07/18/2006
7062875	Barrel replacement or insert devices for firearm function conversion An adapter device is provided for converting a grenade launcher into a weapon for firing shot shells. The adapter includes an elongate barrel member of a gauge for shot shell which is adapted to be received in, and extend through, the barrel of the host barrel assem...	06/20/2006
7036260	Method and system to prevent firing live rounds of ammunition during miles exercises A safety system for preventing a handheld firearm from discharging an inadvertently loaded live ammunition projectile or bullet during a training exercise or the like by safely venting through a series of substantially perpendicular vent holes in the barrel, the pre...	05/02/2006
6994011	Firearm safety device A firearm safety device for installation into an otherwise functional firearm for disabling the firearm with respect to chambering and firing a round of ammunition and thereby enabling the firearm to be used as a training firearm. The functional firearm includes, am...	02/07/2006
6993864	Locking block for compact semi-automatic pistols A locking block mechanism for a compact semiautomatic pistol includes a pair of forward guide rails, which are normally separate from the locking block. Additionally, the locking block includes transverse ribs on the sides of the locking block, which engage mating s...	02/07/2006
6968770	Firearm safety device A firearm safety device for installation into an otherwise functional firearm for disabling the firearm with respect to chambering and firing a round of ammunition and thereby enabling the firearm to be used as a training firearm. The functional firearm includes, am...	11/29/2005
6848208	Replaceable blank firing barrel A blank firing barrel for use with handguns is disclosed. The blank firing barrel is sized to be substituted for an existing live-ammunition firing barrel in a handgun. The blank firing barrel can be machined from a solid block of metal such as stainless steel so th...	02/01/2005
6634128	0.22 caliber long rifle removable conversion system kit for black powder cap and ball reproduction and replica revolver--recreation and gallery shooting A 0.22 caliber long rifle removable conversion system kit for open top frame, black powder, ball and cap colt reproduction and replica revolver--recreation and gallery shooting comprises a barrel nut and a barrel sleeve nut being threaded to mate with a t...	10/21/2003
6606952	Shotgun adapter for use to school different gauge shells A shotgun adapter is provided for firing a shotgun cartridge having a shotgun bore which is larger than the cartridge. The adapter is a generally hollow tubular member having a cylindrical tapered outer wall and an inner wall concentric with the outer wal...	08/19/2003
6591534	Gun locking interface assembly for non-conforming components Shown is a locking interface assembly that facilitates the integration of a commercial Long Gun Barrel tube with an existing gun mount of a conventional Tank. The interface assembly allows the non-conforming tube to be fitted to the mount in a precise fas...	07/15/2003
6446559	Shotgun adapter for use to shoot different guage shells A shotgun adapter is provided for firing a shotgun cartridge having a shotgun bore which is larger than the cartridge. The adapter is a generally hollow tubular member having a cylindrical outer wall and an inner wall concentric with the outer wall, with ...	09/10/2002
6442882	Cartridge ejection mechanism for converted automatic pistol An automatic pistol converted to fire low energy ammunition in a blow-back mode has a replacement barrel that carries a cam on its upper surface. The weapon slide, as it retires during firing, contacts the cam and rotates the chamber end of the replacemen...	09/03/2002
6357331	Two-piece barrel for low-energy training ammunition A conversion kit for a recoil-operating automatic pistol to convert it to direct blow-back operation utilizes a two piece barrel having chamber and muzzle portions that may be threaded together. The chamber portion is first installed on the receiver by in...	03/19/2002
6324983	Sub-caliber projectile for low impulse cartridges A sub-caliber projectile cartridge for automatic weapons includes a case, a piston, a forward cavity/an inner bore in the piston, a sub-caliber projectile, and a link. The sub-caliber projectile is seated into the forward cavity/inner bore located in the ...	12/04/2001
6324984	Payload mechanism for low impulse cartridges This low impulse payload cartridge for automatic weapons includes a case, a piston, an ogive, a payload cup, a payload, and a link. The payload cup and payload is seated into the forward portion of the piston. Gas passages permit propellant gases to bleed...	12/04/2001
6318230	Gun attachment A blank firing attachment for a recoil operated gun. The attachment comprises a barrel (10) having in its length an external shoulder (12). A gas cylinder in the form of a sleeve (13) is slidingly fitted onto the barrel (10) and located over the external ...	11/20/2001
6314859	Self-loading pistol conversion kit for a locked self-loading pistol and a weapon system composed of an optionally locked or unlocked self-loading pistol An unlocked self-loading pistol and a conversion kit for modifying a locked self-loading pistol adapted for firing normal and powerful cartridges into an unlocked self-loading pistol capable of firing weak cartridges as well as normal and powerful cartrid...	11/13/2001
6276252	Ammunition chambering mechanism for automatic firearms A training barrel for conversion of a firearm from normal barrel/slide partial locking operation to unlocked slide blow-back operation has an insert which provides a guide ramp for chambering rounds during the reload cycle. The guide ramp compensates for ...	08/21/2001
6202533	Subcaliber device/blank firing adaptor for blowback operated or recoil operated weapons The bolt of a blowback operated weapon is driven rearward by multiplying the area acted upon by pressurized gas generated by a subcaliber bulleted cartridge or a blank cartridge fired in a subcaliber barrel inserted into the weapon barrel and attached to ...	03/20/2001
6161461	Training device for a combat vehicle with a heavy weapon, especially an armored howitzer A training device for a combat vehicle with a heavy weapon, especially an armored howitzer. A shorter practice barrel replaces the weapon's regular barrel, but has the same sort of attachments at its inner end as the regular barrel has for fastening it to...	12/19/2000
6145440	Training weapon system The invention relates to a training weapon system for a portable recoilless anti-armor weapon of the type which comprises a sub-caliber insert barrel (1) arranged in the bore of the launching barrel of the full-caliber weapon. In order to improve the accu...	11/14/2000
6050170	Combination anti-rotation and counter-recoil device for a sub-caliber barrel positioned inside a larger caliber gun barrel A combination anti-rotation and counter-recoil device for a sub-caliber barrel positioned inside a larger caliber barrel gun which utilizes a plate attached to the flat base of the tubular member simulating the cartridge case within the larger caliber gun...	04/18/2000
5983772	Subcaliber device/blank firing adaptor for blowback or recoil operated weapons The bolt of a blowback operated weapon is driven rearward by multiplying the area acted upon by pressurized gas generated by a subcaliber bulleted cartridge or a blank cartridge fired in a subcaliber barrel inserted into the weapon barrel and attached to ...	11/16/1999
5983773	Chambering of low-energy training ammunition in automatic firearms A barrel positioning spring moves a barrel in a blow-back operating pistol earwardly when the slide recoils in order to position the chamber on the barrel to receive a further cartridge with the return of the slide. This spring in a Colt(™) .45 caliber p...	11/16/1999
5886280	Training device for use with combat vehicles A training device for combat vehicles which can hold a replacement weapon. This training device is comprised of an insertion portion which inserts within the barrel support of the combat vehicle and has secured thereto a holding device for holding a repla...	03/23/1999
5829180	Blank-firing semiautomatic pistols A semiautomatic pistol adapted to repetitively fire blank ammunition includes a frame, a barrel slidably mounted to the frame, a slide slidably mounted to the frame and adapted for reciprocal longitudinal movement relative to the frame between a forward b...	11/03/1998

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Class 89/29 - PRACTICE BARRELS