Class 42/97 - Weights and balances

Subclass of Class 42 - Firearms
Definition: Devices including means which are attached to portions of
No. of patents: 27
Last issue date: 05/15/2012

Number	Title	Issue Date
8176671	Weapon barrel and damping device A weapon barrel of an automatic firearm is subject to bending oscillations during firing. A damping device is provided for damping the bending oscillations and to at least largely dissipate the kinetic energy of the bending oscillations by friction processes which a...	05/15/2012
7676980	Adjustable mass tuner for rifle barrels An apparatus for mass-tuning a gun barrel comprises a body portion configured for attachment to the gun barrel. The body portion includes a main bore therethrough and defines a plurality of predetermined mass attachment locations. Each mass attachment location compr...	03/16/2010
7231822	Machine and method for balancing a member during rotation A machine for balancing a rotating member includes hard bearing balancing apparatus for determining the magnitude and circumaxial location of imbalance. A sensor responds to the position of the rotating member. A computer receives signals from the balancing apparatu...	06/19/2007
7152357	Composite firearm barrel assemblies A firearm barrel includes an elongate metal insert member and a rigid sleeve surrounding the insert member along a majority of the length of the insert member. A casing is formed around at least a portion of the sleeve, preferably by injection molding. Breech and mu...	12/26/2006
7055276	Harmonic damper to dampen firearm vibration A damper for reducing recoil and vibrations during and after firing a firearm may comprise a resilient member and a weight. The resilient member may mounted to a portion of a firearm having a surface suitable for engaging and retaining the resilient member therein, ...	06/06/2006
7047684	Short repeater rifle Short repeater rifle with a barrel, which has on one of its ends a cartridge receiver; a locking system; a trigger assembly with a trigger and a trigger guard; a firing mechanism; a magazine; and a targeting device, characterized in that the center of gravity of the...	05/23/2006
6688031	Replacement adjustable competition buttstock An ergonomic adjustable gun stock for AR-15, M-16, and SR-25 type rifles for use in competition shooting events, having multiple cheek pieces, and adjustable length of pull, weight, drop, and cant. The gun stock being mounted using the original gun stock ...	02/10/2004
6477802	Extended dust cover for a handgun A handgun assembly is provided. The frame of the handgun includes a forwardly extending portion that terminates at the forward end of the muzzle or slide of the handgun. The forwardly extending portion of the frame has a dust cover that supports the entir...	11/12/2002
6345463	Extended dust cover for a handgun A handgun assembly is provided. The frame of the handgun includes a forwardly extending portion that terminates at the forward end of the muzzle or slide of the handgun. The forwardly extending portion of the frame has a dust cover that supports the entir...	02/12/2002
5907921	Ballistic optimizing system for rifles A ballistic optimizing system for use on a rifle comprises an axially movable weight threadedly secured to the end of a rifle barrel such that movement of the weight can be used to change vibrational characteristics of the rifle when it is fired. By dampi...	06/01/1999
5860242	Removable harmonic tuning system for firearms A tubular shaped collar (22) of predetermined mass having internal threads (23) and an internal tapered area (21) which is threaded onto a tubular shaped insert (26) of flexible composition that has threads (44) that match the threads (23) of the collar a...	01/19/1999
5827992	Gas operated firearm A known gas operated firearm has been modified to be of more compact size and reduced weight while retaining the firepower, the features, and most of the components of its predecessor. A bolt assembly reciprocably mounted in a longitudinal cavity of a rec...	10/27/1998
5798473	Harmonic optimization system for rifles An apparatus or apparatus system for vibration control, by harmonic optimization technology, of vibrations in the cantilever or barrel, portion of a device from which projectile is fired or launched along the centerline of the cantilever. More particularl...	08/25/1998
5794374	Gun barrel stabilizer The gun barrel stabilizer system of the present invention increases or optimizes the accuracy of guns including small arms and artillery. The invention consists of a device called a gun barrel stabilizer rigidly attached at the gun muzzle, and extending t...	08/18/1998
5758447	Recoil absorbing device and method An improvement in a device for absorbing the recoil of a rifle fired while extending above a horizontal surface with the barrel of the rifle supported by a rest member. The improvement is a weighted bag member resting freely on and unattached to the horiz...	06/02/1998
5698810	Convertible ballistic optimizing system A convertible ballistic optimizing system includes a main body portion adjustably secured to the muzzle end of a firearm. A retainer, such as a lock nut, is utilized to secure the main body portion in a particular axially position to change vibrational ch...	12/16/1997
5689907	Inert weighted magazine An inert magazine for replacing a loaded magazine in a gun having a magazine chamber, the inert magazine includes a ballast, sized and shaped to be received into the magazine well of the gun, and means for removably retaining the ballast in the magazine w...	11/25/1997
5678345	Barrel stabilization and recoil controlling apparatus for rifle or shotgun A barrel stabilization unit is provided for stabilizing a barrel and controlling recoil of a rifle or shotgun having a barrel guide means for providing a fulcrum attachment point adjustably along the barrel of a rifle or shotgun, and fillable ballast cont...	10/21/1997
5509345	Muzzle attachment for improving firearm accuracy A tubular adapter (12) is clamped onto the muzzle (16) of a firearm (18). The adapter (12) is axially split where it surrounds the muzzle (16). A clamp ring (38) surrounds fingers (44) which are between the splits (28) and squeezes the fingers (44) diamet...	04/23/1996
5423145	Rifle-barrel harmonic vibration tuning device A harmonic vibration tuning device is provided in the forestock of a rifle engaging a cantilevered barrel forward of the rifle action, for the purpose of effecting a change the harmonic vibration frequency of the barrel, that is generated, as a projectile...	06/13/1995
5279200	Ballistic optimizing system for rifles A ballistic optimizing system for use on a preferably bedded rifle comprising a movable weight element secured to the end of a rifle barrel such that said weight element can be moved axially along said barrel to change the effective weight applied for dam...	01/18/1994
5223650	Telescopic sight with level indicator A tilt or cant indicator for telescopic sights incorporates a gravity responsive device aligned with the reticle or vertical crosshair of the sight. A pendulum device incorporating a pointer is installed with its rotational axis intersecting the vertical ...	06/29/1993
5016378	Firearm safety apparatus An apparatus including an illumination member cooperative with a mechanical bolt, whereupon in a lowered position the apparatus effects blockage of an associated trigger of the firearm within the firearm mechanism while in a raised second position and eff...	05/21/1991
4715140	Compensator for handguns and the like A compensator for a handgun comprises a barrel bushing having a first end inserted into the forward end of a slide and slidably receiving the barrel, and a second end projecting away from the barrel and slidably receiving a compensator weight having an ex...	12/29/1987
4599934	Gas operated firearm This invention relates to firearms, such as shotguns, which utilize gas pressure developed by the explosion in the barrel to automatically eject the spent cartridge case or shell. A structure is provided for venting the expanding gases developed by the ex...	07/15/1986
4127953	Anti-recoil boot An anti-recoil boot for large caliber rifles is disclosed. The boot mounts detachably on the stock of a rifle. The construction defines two large pockets into which may be inserted large quantities of lead shot or other heavy ballast. The total weight of ...	12/05/1978
4006548	Counterbalance for handgun A counterbalance for a handgun in which a structure is secured to the rear of the gun and extends rearwardly thereof having sufficient weight, which may be adjustable to balance the weight of the gun forward of the pivot point (or wrist) of the user. The ...	02/08/1977

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Class 42/97 - Weights and balances