In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
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| Number | Title | Issue Date |
| 8069600 | Multi-caliber bolt for a firearm A bolt for a firearm is described that can be used to chamber, extract, and/or eject different cartridges that have different outside rim diameters. In one embodiment, the bolt includes a bolt head that is configured to engage the rearward end of a plurality of diff... | 12/06/2011 |
| 7581344 | Weapon extractor and cartridge A delayed action extractor for a blowback weapon operating system and a cartridge provided with a slideable primer and primer-supporting sleeve in a cartridge designed for use with the delayed action extractor. ... | 09/01/2009 |
| 7478494 | Repeating weapon The invention relates to a repeating weapon, especially to a repeating rifle, with a cartridge chamber and a bolt block, which contains a bolt that can move relative to the cartridge chamber and that can be locked by means of a locking device in a closed position. F... | 01/20/2009 |
| 7398614 | Firearm apparatus and method A firearm apparatus and a method of firing ammunition therefrom, where the method utilizes a barrel (12) having a breech end surface (40) and immovably affixed to frame (10), a stand pressure surface (32), and a cartridge container (16... | 07/15/2008 |
| 7395626 | Firearm with selection device for right or left-hand cartridge case ejection Fire arm with selection device for right or left-hand cartridge case ejection comprising a barrel (12), a breech bolt holder slide (21), a breech bolt (18) fitted with firing pin (19) and a frame (14) fitted with openings on both s... | 07/08/2008 |
| 7380362 | Firearm extractor mechanism An extractor mechanism with improved reliability is provided having an extractor arm pivotally mounted within a pocket in a firearm slide. The extractor arm includes a body portion and a hook portion, the body portion being disposed within the pocket and the hook po... | 06/03/2008 |
| 7377066 | Firearm with a readily interchangeable bolt face A readily replaceable bolt face for a firearm (10) with a movable slide (12) that strips a round from a magazine, extracts the spent round from the firing chamber and then ejects the round from the firearm by means of an ejector. A bolt face insert ( | 05/27/2008 |
| 7360331 | Pistol with firing pin blocking magazine disconnect mechanism An autoloading pistol with a magazine disconnect mechanism that blocks discharge of the pistol when the magazine is removed by action upon the pistol's firing pin. The pistol may generally include a removable magazine, a housing defining a chamber to hold a cartridg... | 04/22/2008 |
| 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 |
| 7331135 | Internally asymmetrical bolt carrier A bolt locking housing (16) on a gun, behind the chamber (4) thereof, for receiving a bolt (6) including an extractor (10) having an extractor hook that grips a corresponding extractor groove (21) of a cartridge (2) within s... | 02/19/2008 |
| 7311032 | Firearms with gas pressure loading mechanisms Firearms employing gas pressure loading mechanisms are disclosed. An example firearm includes a single force receiving component containing a gas cylinder, and a barrel in communication with a cartridge chamber received in the force receiving component. The cartridg... | 12/25/2007 |
| 7305786 | Pistol with loaded chamber indicator A centerfire autoloading pistol including a loaded chamber indicator to identify the presence of a cartridge loaded in the firing chamber. The pistol may generally include a housing having an external surface and defining a chamber to receive a cartridge, a barrel u... | 12/11/2007 |
| 7302773 | Method of firing of firearms A method of firing of arms which utilizes both action and reaction forces in the process of firing. The action force propels the projectile (14) while the opposite in direction reaction force is used with an independent freely moving inert mass (20) in... | 12/04/2007 |
| 7237469 | Firearms having a locked breech Firearms having a locked breech are disclosed. An example firearm includes a barrel; a bolt head; a firing pin having a bulge; a bolt head carrier having a forward position and a rearward position; a central force receiving component receiving a rear end of the barr... | 07/03/2007 |
| 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 |
| 7117623 | Frame construction for with removable side plate Frame construction for a firearm (10) with a frame (18) and a slide (12) constrained to move longitudinally between a forward and a rearward position but which is also removable from the frame. A recess (39) in the side of the frame conta... | 10/10/2006 |
| 7076901 | Empty cartridge removing device of a dummy launcher for animal training An empty cartridge removing device of a dummy launcher for animal training having a fixed member of a fixed assembly pivotally assembled with a body of a firing assembly, the empty cartridge removing device comprising: a barrel adapted to be coupled with a coupling ... | 07/18/2006 |
| 7073283 | Breech plug for muzzleloading firearms A breech plug having a body with first and second ends and a compression chamber extending therethrough, a primer holder mounted to the first end of the body having a central aperture aligned with the compression chamber with slots extending radially from the centra... | 07/11/2006 |
| 6978709 | Breech device for bolt action firearms A breech device for bolt-action firearms includes a breech body reciprocating in the receiver and rotatable into locking position. In its front part, the breech body has locking lugs located in three sectors, the locking lugs in at least two sectors being formed in ... | 12/27/2005 |
| 6966137 | Device for extracting and ejecting a cartridge case in a firearm A device for extracting and ejecting a cartridge case in a firearm applied to a breechblock equipped with windows (17) on opposite sides, comprises an extraction element (19), equipped with an engagement means (28) suitable for holding a cartrid... | 11/22/2005 |
| 6851212 | Extractor assembly for a semi-automatic handgun A system and method for extracting a round of ammunition from a semi-automatic handgun having a slide with an opening are provided. An extractor assembly includes a first member configured to be disposed in the opening of the slide such that the slide encloses the f... | 02/08/2005 |
| 6732465 | Firearm mechanism having slide with interchangeable breech face A firearm, such as a handgun, rifle, machine gun, etc. has a frame assembly having a barrel defining a cartridge chamber and includes a magazine for serially positioning cartridges at a pickup location relative to said frame assembly and barrel. A reciprocating memb... | 05/11/2004 |
| 6678983 | Ultra-short-action firearm for high-power firearm cartridge A short-action firearm has a chamber and bolt assembly with unique pressure, length and diametric relationships. The overall length of the chamber has a ratio to a diameter thereof, at a predetermined location on a wide portion of the chamber, of no more ... | 01/20/2004 |
| 6625917 | Bolt assembly for a firearm A bolt assembly for use in a firearm is disclosed which is movably arranged in a weapon housing and which includes a bolt carrier and a bolt head. The bolt head can be alternately inserted in at least two positions in the weapon housing to adapt the firea... | 09/30/2003 |
| 6625916 | Conversion of firearms to fire reduced-energy ammunition A training kit is designed for use with a firearm normally having a standard bolt that is provided at the forward end with a bolt recess for receiving and embracing the head end of a standard cartridge. The training kit is provided with a training bolt ha... | 09/30/2003 |
| 6550174 | Short-action firearm for high-power firearm cartridge A short-action firearm has a chamber and bolt assembly with unique pressure, length and diametric relationships. The overall length of the chamber has a ratio to a diameter thereof, at a predetermined location on a wide portion of the chamber, of no more ... | 04/22/2003 |
| 6536150 | Automatic firearm with a moving bolt assembly with locking projections The bolt assembly includes a bolt head having a locked position and an unlocked position. The bolt head also has a periphery and an even number of arrangement sites located on the periphery. The bolt assembly further includes a plurality of locking projec... | 03/25/2003 |
| 6523293 | Arrangement for opening the dust flap of a firearm An apparatus is provided for use in a firearm having a housing defining a first ejection opening and a second ejection opening. The apparatus includes first and second dust flaps mounted adjacent the first ejection opening for movement between an opened p... | 02/25/2003 |
| 6484430 | Multi-lugged bolt carrier and barrel for rifles An improved bolt, bolt carrier and barrel assembly for rifles is described. This invention provides bolt mechanism that has heavier lugs on each side of the extractor to distribute the forces more equally and reliably and thereby reducing firearm failure ... | 11/26/2002 |
| 6481135 | Rotatable breech mechanism A rotatable breech mechanism includes a bolt rotatably supported in a chamber housing by a bolt handle, and which in one rotated position thereof is locked to a barrel chamber sleeve and in a further rotated position thereof is unlocked from the sleeve. A... | 11/19/2002 |
| 6397505 | Cartridge casing ejector for a firearm The cartridge ejector has a spring loaded ejector slide supported by the barrel pivot block for siding motion from a seated position to an eject position. The slide has a finger configured to engage the cartridge casing rim when the casing is seated at th... | 06/04/2002 |
| 6393751 | Modular firearm and method for making the same A modular firearm according to the present invention includes a breach face module receiver adapted for receiving a fully assembled breach face module. The breach face module includes a breach face and an extractor arm precisely located relative to the br... | 05/28/2002 |
| 6389725 | Fire arm with forward ejection or ejection brought to the fore-part of the fire arm The fire arm contains a frame, a barrel (2) and mobile elements (4) containing an extractor to carry along a casing during the recoil and an element (7) to close the fire chamber (3). The fire arm further contains an ejection device with an ejector (25,26... | 05/21/2002 |
| 6349495 | Firing pin control device for a firearm A firing pin control device for a small arm is disclosed. The small arm includes a hammer, a housing including a fixed part, a slide disposed in the housing, with the slide being moveable between an open position and a closed position, and a firing pin mo... | 02/26/2002 |
| 6260297 | Case ejecting device for a large-caliber barrel weapon A weapon includes a barrel having a barrel axis and a breech-side end having an end face; a breech ring affixed to the breech-side end; and a catching and ejecting device movable parallel to the barrel axis for immobilizing a rimless cartridge case in and... | 07/17/2001 |
| 6209249 | Bolt for firearm allowing for reduced clearance between bolt and bolt runway A bolt for a firearm has a front and rear portion with increased diameter front and rear bosses, thereby allowing for reduced clearance between the bolt and bolt runway. The front boss has major and minor diameter portions, with the major diameter portion... | 04/03/2001 |
| 6176169 | Aircraft support plank mounted 30 MM machine gun A machine gun, representatively a 30 mm machine gun, is mounted on an outer end portion of a support plank structure projecting out of the cabin area of a helicopter using a roller cradle assembly secured to the outer plank end. A variety of structural im... | 01/23/2001 |
| 6145234 | Firing pin safety catch mechanism A firing pin safety catch mechanism for use with a firearm is disclosed. The safety catch mechanism includes a one-piece leaf spring comprising a spring arm, a safety catch and a beveled release part. The safety catch has a first position wherein the safe... | 11/14/2000 |
| 6101919 | Interlocked firearm A sleeve made of spring plate is positioned between the mushroom head and the breechblock carrier of a locked firearm. The sleeve is supported in the expanded state between the mushroom head and the breechblock carrier and, thus, prevents their being push... | 08/15/2000 |
| 6044748 | Breech bolt assembly for a firearm Reliability of a multi-lug breech bolt is improved by modifying the bearing relationship between the bolt lugs and the matching lugs within a gun receiver. This procedure is applied to a gun that has a receiver housing a breech bolt and an extractor. The ... | 04/04/2000 |