Famous Patents
In 1879, Auguste Bartholdi received design patent number 11,023 titled "Design for a Statue". It was for the Statue of Liberty.
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 |
| 7895933 | Pistol conversion from an automatic weapon A semi-automatic pistol is created by the modification of a fully automatic sub-machine gun Sa vz. 61. The semi-automatic pistol is constructed partly from original parts of the Sa vz. 61 sub-machine gun, i.e. barrel, receiver, trigger, trigger lever and pistol grip... | 03/01/2011 |
| 7562614 | Closed bolt system with trigger assembly for converting a fully automatic submachine gun into a semi-automatic carbine A closed bolt system with a trigger assembly for converting an open bolt, blowback type submachine gun into a single firing carbine is provided. The closed bolt system with trigger assembly includes a tensioned trigger member supporting a tensioned disconnector syst... | 07/21/2009 |
| 7451682 | Semi-automatic sporting rifle A semi-automatic sporting rifle is created by the modification of a fully automatic assault rifle Sa vz. 58. The semi-automatic rifle is constructed partly from original parts of the Sa vz. 58 assault rifle, i.e. bolt carrier, locking piece, striker, return mechanis... | 11/18/2008 |
| 7373868 | Semi-automatic rifle Sa vz. 58 A semi-automatic sporting rifle is created by the modification of a fully automatic assault rifle Sa vz. 58. The semi-automatic rifle is constructed partly from original parts of the Sa vz. 58 assault rifle, i.e. bolt carrier, locking piece, striker, return mechanis... | 05/20/2008 |
| 7356957 | Sliding barrel breeching mechanism Apparatus 10 comprises a receiver body 12 along with a trigger 14 for activating the firing mechanism and a lever 16 for opening the breech assembly to allow access to the chamber for receiving the shell/cartridge 56 at the rear of... | 04/15/2008 |
| 7347021 | Firearm action or receiver Apparatus 10 discloses a receiver body 12 along with a trigger 14 for activating the firing mechanism and a lever 16 for opening the breech assembly to allow access to the chamber for receiving the shell/cartridge 56 at the rear of... | 03/25/2008 |
| 7331136 | Adjustable dual stage trigger mechanism for semi-automatic weapons A dual stage trigger assembly for a firearm. The trigger assembly comprises a spring loaded lightweight hammer, a spring loaded trigger, a spring loaded disconnector, a spring follower for the disconnector spring and two adjustment screws that allow the user the abi... | 02/19/2008 |
| 7316091 | Firearm bolt carrier with mechanical/gas key A firearm includes a barrel having an end coupled to a receiver. A reciprocating bolt carrier is carried by the receiver and movable between a locked position and an unlocked position. The bolt carrier includes a buttress formed in a top surface thereof. A key inclu... | 01/08/2008 |
| 7231864 | Reciprocating barrel firearm apparatus A firearm apparatus includes a gun housing which includes a barrel support channel between a front gun housing portion and an intermediate gun housing portion. A reciprocating barrel is housed inside the gun housing and includes a piston-sleeve-contained barrel port... | 06/19/2007 |
| 7162824 | Modular trigger group for firearms and trigger group installation method A module housing is adapted to be inserted into an operating position in the trigger group receiving area of a firearm. The module housing includes at least one pin receiver defined by two openings formed in the module housing, one on each lateral side of the housin... | 01/16/2007 |
| 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 |
| 6966138 | Double fire attachment and method for semi-automatic firearms Devices and methods of converting semi-automatic firearms to a double-fire mode where a firearm fires a shot upon a single pull of a trigger, and fires a second shot upon a release of the trigger. A clip attachment can be constructed from a single component shaped t... | 11/22/2005 |
| 6964220 | Floating barrel handgun method of recoil elimination A floating barrel gun design, a design in which a propellant gas discharge is used to counterbalance the recoil force of the gun, has been improved to include a novel automatic mechanical mechanism which allows the floating or inner barrel to be held stationary with... | 11/15/2005 |
| 6772548 | Trigger assembly for AK47 type rifle An adjustable trigger assembly adapted for installation into the carrier of an AK-47 and similar rifles. The assembly features a plurality of adjusting screws to adjust the force required for trigger pull, the over travel of the trigger after firing, and the forward... | 08/10/2004 |
| 6405631 | Semi-automatic handgun A semi-automatic handgun is disclosed including a frame having a barrel housing mounted thereon. A barrel is movably mounted on the barrel housing and has a cartridge chamber at its rearward end for receiving a cartridge therein. The barrel is movable bet... | 06/18/2002 |
| 6131324 | Adjustable dual stage trigger assembly A dual stage trigger assembly including a spring loaded hammer, a spring loaded trigger, a disconnect lever, a torsion spring adjustment plate, springs, and user available adjustment screws whereby a sear face of the trigger fully engages a notch in the h... | 10/17/2000 |
| 5663522 | M60 semi-automatic conversion The M60 semi-automatic rifle (SAR) is a near clone of the U.S. military M60 machinegun, except the rifle is a modified version of the military gun. The M60 semi-automatic rifle differs functionally because it fires a single round with each pull of the tri... | 09/02/1997 |
| 5501134 | Multi-stage match trigger assembly for use with semi-automatic weapons A multi-stage trigger assembly for use by a shooter of a firearm. Specifically an AR-15 or M-16 although other types of firearms could be used. The invention comprises a trigger, a disconnector, disconnector spring, and a hammer. The trigger and the hamme... | 03/26/1996 |
| 5012604 | Trigger assembly A trigger assembly for a gun comprises a trigger, a hammer mounted adjacent the trigger, a spring-biased member urging the hammer into a firing position, a sear on the trigger to hold the hammer in a cocked position, an auxiliary sear mounted on the trigg... | 05/07/1991 |
| 4658702 | Safety device preventing conversion to full automatic firing A firearm (10) adapted for blowback operation has a receiver incorporating a longitudinally reciprocatable bolt assembly (24) having an inertia firing pin (40) which is movable between retracted or recoil and battery positions in the receiver (14). A trig... | 04/21/1987 |
| 4522105 | Firing mechanism for semiautomatic firearms A semiautomatic firing mechanism for an autoloading firearm. A generally C-shaped hammer is pivotably mounted behind a bolt, with a transversely-extending sear piece located below the rearwardly-facing open side of the hammer. The open ends of the hammer ... | 06/11/1985 |
| 4056038 | Dual purpose semi-automatic convertible rifle A semi-automatic sporting rifle, firing high powered center fire cartridges, is easily and quickly convertible to a 22 rimfire rifle without loss of feel or balance. The dual purpose rifle features a short stroke, gas operating system which is rendered in... | 11/01/1977 |
| 3942410 | Firing mechanism for firearm apparatus Firearm apparatus embodied in a semi-automatic, blowback operated rifle. The firearm includes a receiver made of two plates spaced apart to receive a bolt mechanism including a bolt mounted for reciprocal motion within a channel-shaped member; the operati... | 03/09/1976 |
