Bizarre Patents
An electrified table cloth for preventing crawling insects from gaining access to the consumer's food or drink.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8141287 | Lightweight, low cost semi-automatic rifle A lightweight and low cost semi-automatic rifle includes an upper receiver, a lower receiver, and a forend fabricated from injection-molded polymers. The rifle permits firing .22 LR or similar low-power ammunition from an AR-15 style frame, operates on the blowback ... | 03/27/2012 |
| 8087194 | Firearm barrel retaining system A barrel retaining system for a firearm includes a firearm receiver having a barrel nut coupled thereto and a barrel assembly, which in one embodiment may include a barrel with a barrel extension coupled thereto. The barrel extension includes a plurality of barrel l... | 01/03/2012 |
| 8056278 | Barrel insert A barrel insert is disclosed. A firearm may use a target barrel or another barrel, such as a standard barrel. The stock of a firearm may have a barrel receptacle that is shaped to hold a larger barrel. The larger barrel may be untapered. The barrel insert may be use... | 11/15/2011 |
| 8046949 | Systems and methods for installing a hand guard on a firearm Embodiments of the invention can include systems and methods for installing a hand guard on a firearm. In embodiments, a method of installing a hand guard on a firearm can be provided. The firearm includes a barrel, a barrel nut, and a delta ring. The delta ring is ... | 11/01/2011 |
| 7971382 | Firearm An improved firearm having a barrel coupled to an upper receiver where the receiver includes a passageway extending generally parallel to the longitudinal axis, and a guidance feature extending along the passageway generally parallel to the longitudinal axis. The fi... | 07/05/2011 |
| 7905041 | Stabilized rifle barrel and rifle A firearm includes a support block having a forward end and a rearward end, and carrying a receiver on a top surface thereof. A rearward barrel guide having a thrust coupling extending radially outwardly therefrom, the thrust coupling engaging an engagement element ... | 03/15/2011 |
| 7841121 | Takedown rifle A take-down rifle is described that can be separated into two halves to allow the rifle to be transported, cleaned, etc. easier. The takedown rifle includes a takedown mechanism that is used to couple the two halves of the rifle together. The takedown mechanism may ... | 11/30/2010 |
| 7827722 | Rifle A rifle with an upper receiver and a barrel attached to the upper receiver and including a bolt carrier, and operating, buffer, and cooling systems. The operating system includes a cylinder and a piston coupled to receive propelling gases from the barrel. As the pis... | 11/09/2010 |
| 7823314 | Firearm with a detachable barrel and suppressed barrel assembly A semi-automatic pistol with a detachable barrel and/or a detachable suppressed barrel assembly consists of a new or replacement interchangeable barrel receiver of a type similar to that of the Ruger™ Mk I/II/III or .22/45™ pistols with user interchangeable barr... | 11/02/2010 |
| 7726060 | Firearm fastening assembly and method of use A fastening assembly, method of use and associate kit for use in firearms assembly is provided. In one embodiment, at least one insert having at least a first mating portion and slanted surface is provided. A second mating portion is provided and is adjacent at leas... | 06/01/2010 |
| 7716865 | Systems and methods for providing a hand guard and accessory mounting device for a firearm A system for providing a hand guard and accessory mounting device for a firearm can include at least one barrel nut, at least one bolt up plate, at least one hand guard, and at least one mounting device. The at least one barrel nut can be adapted to mount to a porti... | 05/18/2010 |
| 7644528 | 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... | 01/12/2010 |
| 7574823 | Quick change barrel system for a firearm The present invention is an improved quick change barrel system for a firearm. It features an interlocking trunnion and lock ring that hold the barrel in place proximate the receiver. Intermittent threading provides multiple points of interface. A foldable handle is... | 08/18/2009 |
| 7464496 | Heat exchanger barrel nut A barrel nut for coupling a barrel of a firearm to a receiver includes a body having a first end, an opposing second end, and an outer surface. A bore extends centrally through the body from the first end to the second end. A plurality of heat conducting fins extend... | 12/16/2008 |
| 7451564 | Interchangeable barrel system for rifles A system for use with firearms which permits the ready exchange of barrels on a single action and stock assembly. The barrels may be quickly and easily exchanged under field conditions using a single simple tool and without removing the action and receiver from the ... | 11/18/2008 |
| 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 |
| 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 |
| 7328530 | Barrel latch locking device A barrel latch safety for a grenade launcher having a barrel slidable upon a receiver via actuation of a barrel latch is provided. The barrel latch safety includes a locking plate and elongate member extending from a portion thereof so as to define a crotch between ... | 02/12/2008 |
| 7313883 | Modular receiver system A modular receiver system for firearms comprising a barrel and receiver assembly providing a quick changeover coupling means for connecting the barrel to the receiver, wherein the coupling means comprises a barrel retaining bushing and a pair of opposed cam surfaces... | 01/01/2008 |
| 7287456 | Breech-block system for a firearm A breech system for a firearm exhibits a breech which can be locked in its movement in the barrel block by at least one locking element, which is pressed against the rear end of the barrel by means of a breech spring surrounding the rigid barrel of the weapon, the b... | 10/30/2007 |
| 7275342 | Semi-automatic weapon for several tubes cartridges loading system for long guns New design for semi-automatic weapon for several tubes cartridges loading system for long guns, wherein an in-between connection steel part fixes the barrel to the receiver. The retention of the cartridges inside the parallel tubes is done by three metallic nails. T... | 10/02/2007 |
| 7240600 | Rifle charging handle with ambidextrous latch A charging handle for a rifle having a housing. The handle has a body with an elongated bar having a forward end and a rear end. The bar has a bolt engaging element at the forward end, and a crossbar having an intermediate portion connected to the rear end of the ba... | 07/10/2007 |
| 7156084 | Paint-ball sport gun with adjustable detent assembly A detent body with a center bore is secured to the chamber wall of a paint-ball gun. A floating detent with a hollow core and a domed tip reciprocates within the center bore, allowing the tip to extend into the chamber to restrict movement of a paint ball. Axially a... | 01/02/2007 |
| 7143537 | Firing pin assembly A firing pin assembly is provided that includes a firing pin and a firing pin shaft. The firing pin is received in a slot of the end of the firing pin shaft to be retained therein with a spring retaining sleeve, a main spring, and a main spring sleeve. The firing pi... | 12/05/2006 |
| 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 |
| 7131228 | Modular firearm An M-4 firearm having a lower receiver assembly and an upper receiver assembly. The upper receiver assembly is connected to the lower receiver assembly. The lower receiver assembly has a fire control assembly. The upper receiver assembly has a barrel and a hand guar... | 11/07/2006 |
| 7082709 | Weapon sling and attachments A lower sling attachment adapter for use in the M-16 rifle and M-4 carbine and their equivalents utilizing a rear or butt stock mounted on a tube, one end of which tube is threaded into the rear of the receiver of the weapon, the improvement comprising a lower sling... | 08/01/2006 |
| 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 |
| 7059076 | Firearm rail system An attachment for a firearm having a barrel with a barrel nut mechanism located around an aft portion of said barrel. The attachment includes a shield or supplemental mechanism which is positioned close to the barrel. An attachment mechanism having a first and secon... | 06/13/2006 |
| 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 |
| 7036259 | Casing for firearms A casing for firearms, comprising a metal sleeve (15) on which is stably applied, through attachment means, a barrel (12), an inner element (14) made from polymeric material for the anchoring of said sleeve (15) and an outer shell (13 | 05/02/2006 |
| 7032340 | Breech construction for firearms In an autoloading gun construction having the breach end of a barrel removably assembled to the forward end of a barrel extension which is positioned between and secured to wall sections of two opposing receiver plates of a receiver section, the improvement comprisi... | 04/25/2006 |
| 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 |
| 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 |
| 6959509 | Quick change infinitely adjustable barrel nut assembly The present invention is a quick change and torque controlled barrel nut assembly for use on a variety of firearms. The invention is made up of a generally cylindrically shaped barrel nut configured to adaptably connect a barrel to a firearm, a gas tube ring that is... | 11/01/2005 |
| 6907687 | Over-and-under shotgun apparatus and method An over-and-under shotgun apparatus includes a radius track which serves as a hinge for articulating the barrel portion of the shotgun apparatus relative to the receiver/stock portion of the shotgun apparatus. The radius track is defined by a female or concave porti... | 06/21/2005 |
| 6874268 | Gun A gun in which the gun barrel (2) is seated to be axially displaced in a cradle barrel. To avoid a lifting effect of the gun barrel (2) upon firing, and omit the necessity of complicated guide grooves in the cradle barrel (3) and tabs on the gun... | 04/05/2005 |
| 6836990 | Handguard for a rifle A preferred handguard for a rifle includes a pair of essentially identical half-grip pieces each having an elongated body with a generally triangular lateral cross-section, including two exterior sides and a mating side. The exterior sides of the triangular cross-se... | 01/04/2005 |
