Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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 |
| 8117957 | Breech device for a hand firearm A breech device of a hand firearm comprises a firearm casing, a trigger mechanism, a carrier slidably arranged within the firearm casing, and a breech block engaging the carrier and having a firing pin. The breech device further includes a tensioning element slidabl... | 02/21/2012 |
| 7568422 | Bolt operation facility for autoloading firearm A semiautomatic rifle has a housing defining a housing axis and containing a bolt assembly that reciprocates along the housing axis. The bolt assembly has a bolt carrier and a bolt, which reciprocates axially with respect to the carrier. A barrel is connected to the... | 08/04/2009 |
| 7313996 | Handheld firearm A handheld firearm which is in the form of a self-loading pistol with a bolt lock, having two operating levers which can pivot and each have a handle for operation of the bolt lock, with the operating levers being arranged on mutually opposite sides of the handheld ... | 01/01/2008 |
| 7299737 | Method and apparatus for an action system for a firearm A method and apparatus providing an action system for a firearm. The action system includes a primary roller-lock mechanism located rearward of an ejection port. The primary roller-lock mechanism includes a bolt and a first primary roller caged within the bolt. A bo... | 11/27/2007 |
| 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 |
| 7047864 | Automatic firearms with a detachable breech lock Firearm(s) with a breech lock are disclosed. One such firearm includes a first pivoting lever which, when actuated, releases the breech lock and a second lever, which when actuated also releases the breech lock. The first and second levers are located on opposite si... | 05/23/2006 |
| 6910404 | Gun bolt locking mechanism A carrier assembly for a gun comprises a gun bolt carrier disposed to reciprocate axially with respect to the central axis of the gun, and a gun bolt disposed to reciprocate axially within the carrier. The gun bolt has a locking groove therein. The assembly also com... | 06/28/2005 |
| 6907814 | Automatic firearms with a detachable breech lock Firearm(s) with a breech lock are disclosed. One such firearm includes a first pivoting lever which, when actuated, releases the breech lock and a second lever, which when actuated also releases the breech lock. The first and second levers are located on opposite si... | 06/21/2005 |
| 6810613 | Supplementary safety device for light firearms This invention concerns a supplementary safety device in the form of a false cartridge to be inserted into the chamber of a light firearm barrel, including a radially expandable portion controlled by a lock operated by a specific key for locking/unlocking it in the ... | 11/02/2004 |
| 6708437 | Apparatus for loading a cartridge into a cartridge chamber An apparatus for loading a cartridge into a cartridge chamber of a firearm is provided. The apparatus includes a barrel, and a bolt assembly mounted for movement from a rear position to a forward position to advance a cartridge into the cartridge chamber. The bolt a... | 03/23/2004 |
| 6622609 | Breech mechanism with non-rotating breechblock Disclosed is a breech mechanism with a non-rotating breechblock that is suitable for use with repeating firearms. The present invention is composed of relatively few moving parts, and each of the parts is itself simple, yet together they become an elegant... | 09/23/2003 |
| 5854440 | Shoulder-launched multi-purpose assault weapon A shoulder-launched multi-purpose assault weapon having a modified spotting ifle with a top-mounted electrically fired rocket launcher tube is provided. The spotting rifle forms the base structure of the weapon and all weapon controls are located on the ri... | 12/29/1998 |
| 5710389 | Breech bolt and lock assembly A breech bolt and lock assembly for a gas-operated firearm is provided. The ssembly is contained within a bolt housing which in turn contains a bolt operating spring and a two-part bolt mechanism. The two-part bolt has a cylindrical outer bolt which enclos... | 01/20/1998 |
| 5259137 | Breech mechanism for a firearm especially a repeater weapon The breech mechanism for a firearm is provided with a breech housing, a locking head connected to the barrel and having a radially inwardly directed conical locking shoulder oriented rearwardly of a cartridge carrier, and a substantially cylindrical breec... | 11/09/1993 |
| 5164534 | Secondary recoil absorption mechanism for use on a firearm A secondary recoil absorption mechanism absorbs some of the recoil energy associated with the firing of the firearm. The secondary recoil absorption mechanism includes a roller mounted on the breech block to engage a ramp element pivotally mounted on the ... | 11/17/1992 |
| 4977815 | Self cleaning automatic machine pistol and silencer for the same An automatic machine pistol is provided, which is not subject to fouling, which is compact and light while incorporating a pneumatic recoil buffer, which resists muzzle climb, and which can be accessed and cleaned without disassembly. The machine pistol i... | 12/18/1990 |
| 4579037 | Machine pistol with retarded blowback A machine pistol with means for retarding blowback of the slide assembly. The device has both right hand and left hand stocks to enable the weapon to be fired from a comfortable visual sighting position at eye level with the wrist axes perpendicular to on... | 04/01/1986 |
| 4227439 | Anti-bounce apparatus for reciprocating bolt assemblies of automatic cannon Anti-bounce apparatus for an automatic cannon reciprocating bolt assembly which includes a bolt, a bolt carrier and bolt mounted locking lugs, comprises means defining engagement surfaces contoured for enabling the forward moving carrier to cam the lugs i... | 10/14/1980 |
| 4066000 | Machine gun An automatic weapon incorporating a retarded blow back, a cartridge and bolt centering assembly, light weight and minimum component construction, simplicity in disassembly, easily detachable barrel, unique belted ammunition feed system, disposable ammunit... | 01/03/1978 |
| 4024793 | Energy absorbing device and detent for constant recoil slide A clamp and wedge attachment to fixed and moving components frictionally ages the components which become disengageable upon application of overriding forces. The wedge has an enlarged detachable loading end which fits between two tines of the clamp whic... | 05/24/1977 |
| 3990346 | Gas locked firearm An improved gas locked firearm using expanding gases to force a bullet through a barrel in which a portion of said gases are diverted through a gas port communicating with a gas locking chamber adjacent said barrel which chamber is formed between said bar... | 11/09/1976 |
