Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 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 |
| 7353740 | Rapid adjust muzzle system A gun barrel adaptor includes a body having a central bore therethrough and including a flange, the flange having a hole therethrough, the body having a lower side on one side of the flange and an upper side on another side of the flange; a flat spring attached to a... | 04/08/2008 |
| 7347023 | Machine guns having detachable barrels and methods operating the same Machine guns having detachable barrels and methods of operating the same are disclosed. An illustrated example firearm includes a housing; a removable barrel; a latch to releasably secure the barrel in the housing, the latch having a released state and a secured sta... | 03/25/2008 |
| 7331294 | Rifled slug A rifled slug is provided with a metal head (1) and a plastic rear part (2), which is made as a single piece from a pin-shaped front part (5), with a rod-shaped middle part (6) joined to the rear of the front part, and with a plunger-shap... | 02/19/2008 |
| 7305788 | Battering ram with explosive discharge A noise generation device is taught which is used in conjunction with a shotgun generating a blast which has a) at least one chamber for receiving the blast from the barrel; b) a connecting bolts for joining the one chamber to the barrel; c) at least one exhaust por... | 12/11/2007 |
| 7290475 | Blank cartridge devices for attachment over a muzzle flash suppressor Blank cartridge devices for attachment over a muzzle flash suppressor and methods of operating the same are disclosed. A disclosed example includes a muzzle flash suppressor mounted on a barrel that includes a muzzle, a longitudinal bore including internal threading... | 11/06/2007 |
| 7165496 | Piston head cartridge for a firearm A firearm cartridge is provided with a case body and a piston head. The piston head is movably engaged with a rearward end of the case body. The piston head seals the rearward end of the case body to contain propellant gases in the case body when the firearm cartrid... | 01/23/2007 |
| 7137219 | Machine guns having detachable barrels and methods of operating the same Machine guns having detachable barrels and methods of operating the same are disclosed. An illustrated example firearm includes a housing; a removable barrel; a latch to releasably secure the barrel in the housing, the latch having a released state and a secured sta... | 11/21/2006 |
| 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 |
| 6973863 | Adaptor for firing blank ammunition An adaptor for use with a flash suppressor on a gun barrel in order to allow the gun to repeatedly fire blank rounds of ammunition. The adaptor has a stem that chokes the flow of gases from an exploding round in order to create a back pressure. A body is used to cou... | 12/13/2005 |
| 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 |
| 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 |
| 6899008 | Gun barrel having a muzzle brake A gun barrel having a muzzle brake (2), especially for large-caliber guns, in which the muzzle brake (2) includes a tubular piece that has openings (16) around its circumference, and a jacket tube (4), which surrounds the tubular piece an... | 05/31/2005 |
| 6889593 | Blank cartridge devices and firearms designed therefor A blank cartridge device is disclosed. According to one example, the blank cartridge device includes a frame, a threaded bush, a nozzle body, and a cover bushing. In such an arrangement, the frame may include first and second longitudinal sides and front and rear si... | 05/10/2005 |
| 6886467 | Training cartridge for an automatic rapid-fire weapon The invention relates to a training cartridge for an automatic rapid-fire weapon. Said training cartridge (1) has a central channel (4) running therethrough which accommodates a propellant charge (6) in the rear area of the cartridge (1) ... | 05/03/2005 |
| 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 |
| 6826995 | Noise abatement system for a gun A noise abatement apparatus for a gun having a gun tube includes a plurality of generally spherical pressure vessels, with a first pressure vessel having an end adapted to be coupled to the gun tube. The pressure vessels are adapted for attenuating pressure waves ca... | 12/07/2004 |
| 6564689 | Blank for gun barrel, method for producing said gun barrel and gun barrel Blank for a gun barrel, consisting of a steel bar, which bar, in one or more hot working steps, has been repeatedly wrung about its own longitudinal axis.... | 05/20/2003 |
| 6412390 | Low impulse firing adapter for combination gas and recoil operated weapons A low impulse firing attachment and companion ammunition for combination gas and recoil operated automatic weapons is comprised of a barrel insert and piston that provide the mechanism for containing the expanding propellant gases produced on firing. Such... | 07/02/2002 |
| 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 |
| 6289623 | Device for reducing the danger of harm caused by accidental discharge of a bullet from a firearm The invention provides a device for reducing the danger of harm caused by the accidental discharge of a bullet from a firearm, including an attachment for engaging the muzzle end of a firearm barrel; a substantially tubular body having a cavity and coaxia... | 09/18/2001 |
| 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 |
| 6176032 | Device for preventing the accidental discharge of a bullet from a firearm A device for preventing the accidental discharge of a bullet from a firearm, suitable for use with blank cartridges, the device including an attachment member adapted to engage the muzzle end of a firearm barrel, a substantially tubular body having a cavi... | 01/23/2001 |
| 6026728 | Firearm with blank cartridge device A blank cartridge device is disclosed for use with a firearm having a flash reducer. The blank cartridge device includes a bushing defining a bore sized to receive the flash reducer. It also includes a block mounted within the busing bore and defining a b... | 02/22/2000 |
| 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 |
| 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 |
| 5677505 | Reduced energy cartridge A two part cartridge has a rearwardly recoiling inner piston and a choked orifice at its forward end to develop a blow-back thrust that will cycle a recoil operated automatic firearm. The piston operates by thrusting off the inner end wall of the firearm ... | 10/14/1997 |
| 5675106 | Blank firing conversions for semiautomatic pistols An automatic pistol adapted to repetitively fire blank ammunition includes a frame, a barrel unit supported by the frame and a slide unit reciprocally mounted on the frame between the forward and rear position. The barrel unit and/or frame incorporate str... | 10/07/1997 |
| 5492063 | Reduced energy cartridge A two part cartridge has a rearwardly recoiling inner piston and a choked orifice at its forward end to develop a blow-back thrust that will cycle a recoil operated automatic firearm. The piston itself may serve to contain propellant and preferably contai... | 02/20/1996 |
| 5463930 | Device for firing practice ammunition A weapon for firing practice ammunition includes a barrel having a frontal length portion terminating in a muzzle; an ammunition loading chamber at a barrel end opposite the muzzle; and a plurality of first gas outlet bores provided in the frontal length ... | 11/07/1995 |
| 5438907 | Blank firing adaptor The weapon bolt is driven rearward by gas pressure from a blank cartridge with the reaction being transmitted to the weapon frame through a spigot inserted through the barrel and attached to the weapon muzzle. Power is thereby provided to perform cycling ... | 08/08/1995 |
| 5433134 | Blank firing conversions for semiautomatic pistols An automatic pistol for repetitively firing blank ammunition includes a frame, a barrel unit including a barrel chamber portion and a barrel element extending from the barrel chamber portion, and a slide mounted on the frame and reciprocally longitudinall... | 07/18/1995 |
| 5377438 | Device for preventing accidental discharging of a bullet from a firearm A device for preventing the accidental discharge of a bullet from a firearm, including an attachment adapted to engage the muzzle end of a firearm barrel, a tubular body coaxially attachable with one of its ends to the barrel via the attachment, the bore ... | 01/03/1995 |
| 5325758 | Blank firing attachment The invention is a blank firing attachment for use on a gas operated automatic rifle or light machine gun. The device restricts the exit of gases from the rifle barrel when a blank cartridge is fired, thus retaining sufficient gas pressure in the barrel t... | 07/05/1994 |
| 5320022 | Apparatus for reducing recoil and muzzle climb from discharge of firearms A method and apparatus are provided for reducing the recoil and muzzle climb from the discharge of a firearm. A hollow cylinder member having a front end with a restricted opening forming a gas chamber is attached to the muzzle end of a firearm and serves... | 06/14/1994 |
| 5140893 | Blank firing adapter A blank firing adapter having a particular configuration is installed in an automatic or semi-automatic firearm to increase back-pressure of propellant enabling the firearm to be efficiently operated with blank, or practice, ammunition.... | 08/25/1992 |
| 4907489 | Blank fire configuration for automatic pistol A pistol configured to fire blank cartridges includes a modified barrel with a breech portion connected to an aligned inner sleeve. Around the inner sleeve, there is disposed an outer sleeve having a vent therein through which the cartridge discharges. Th... | 03/13/1990 |
| 4829877 | Blank firing firearm recoil mechanism An accessory for converting a small bore firearm into a safe theatrical stage prop providing both aural effects of the "report" of detonated gunpowder and visual effects of discharged "gunsmoke" and "recoil" motion imparted to the body of a user, is const... | 05/16/1989 |
| 4685378 | Blank firing attachment for machine gun An attachment for a maching gun with automatic firing mechanism operated by barrel recoil has a tubular jacket positionable over the barrel. A rear end of the jacket is securable to the gun casing and its forward end surrounds the muzzle of the barrel. A ... | 08/11/1987 |
