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| Number | Title | Issue Date |
| 8056279 | Compressed elastomer process for autofrettage and lining tubes An inventive process is provided for creating residual compressive stress at a surface of a structure without resort to custom mandrels and dangerous high-pressure fluids. The inventive process yields autofrettage of a structure such as a tube, gun barrel and the li... | 11/15/2011 |
| 7866079 | Modular barrel assembly A modular barrel assembly for firearms that includes a breech section formed from a high-strength material and a barrel section. the barrel section generally is formed separately from the breech section and can be formed from a different, lighter-weight material. On... | 01/11/2011 |
| 7707761 | Process for manufacturing double barrel shotgun barrels, and the resulting double barrels A method for manufacturing double barrel shotgun barrels, including the steps of providing an elongated metal stock material having a first end and a second end, forming two index holes in both the first end and the second end of the material, forming a first and se... | 05/04/2010 |
| 7383656 | Process for manufacturing double barrel shotgun barrels, and the resulting double barrels A method for manufacturing double barrel shotgun barrels, including the steps of providing an elongated metal stock material having a first end and a second end, forming two index holes in both the first end and the second end of the material, forming a first and se... | 06/10/2008 |
| 7334364 | Process for imprinting a composite ventilated rib A method of forming a composite rib for the barrel of a firearm is provided. The method generally includes aligning composite material and a release layer and directing the combination of materials through a die. The release layer is removed from the intermediate ri... | 02/26/2008 |
| 7082708 | Method for removing coating damages and/or erosion damages The invention relates to a method for repairing coating damage and/or erosion damage on the internal surface of a weapon barrel by overlaying the respectively damaged barrel region with a suitable coating material and, if necessary, reworking it mechanically. | 08/01/2006 |
| 7059078 | Process for imprinting a composite ventilated rib A method of forming a composite rib for the barrel of a firearm is provided. The method generally includes aligning composite material and a release layer and directing the combination of materials through a die. The release layer is removed from the intermediate ri... | 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 |
| 6931776 | Apparatus for the section-wise autofrettage of gun barrels An apparatus for the section-wise autofrettage of gun barrels (22) by a hydraulic pressure generated inside the barrel. The apparatus (1, 1′, 1″) comprises a mandrel-shaped insert (2, 2′, 2″) inserted into the barrel (22) from the... | 08/23/2005 |
| 6817132 | Barrel chambering method and apparatus A method of machining a chamber in a gun barrel by EDM, by using a conductive electrodes which defines the desired shape and dimensions of the chamber. A series of electrodes of progressively increasing diameter may be used. An electrode for an EDM barrel chambering... | 11/16/2004 |
| 6810615 | Method for gun barrel manufacture using tailored autofrettage mandrels A method of manufacturing a monobloc gun barrel by calculating an optimal residual stress profile and then applying tailored autofrettage mandrels which are mechanically pressed down the bore of a large caliber barrel, the mandrel size optimized to create a residual... | 11/02/2004 |
| 6408557 | Apparatus for producing rifling grooves in a weapon barrel An apparatus for producing rifling grooves in a weapon barrel, in which a drawing head (1) that rotates about its longitudinal axis (5) is drawn through the respective weapon barrel by a drawing rod (2), and the rifling grooves are cut into the inside sur... | 06/25/2002 |
| 6233799 | Cylinder sizer and method thereof A cylinder sizer and method includes a base, a slide cooperating with the base and movable relative thereto and a lock fastener to extend through a central aperture of a cylinder for a gun and engaging the slide. The cylinder sizer also includes an alignm... | 05/22/2001 |
| 6230429 | Composite tube for gun barrel A composite tube for a gun barrel consists of: an inner tubular metal liner defining a longitudinal bore axis; a resin matrix material surrounding the liner, the resin matrix material containing a plurality of elongate carbon fibers, the carbon fibers bei... | 05/15/2001 |
| 5600912 | Composite tube for a gun barrel A composite tube for a gun barrel and a method for making the tube are disclosed. The tube includes a plurality of elongate carbon fibers and a resin material surrounding a longitudinal bore axis. The elongate carbon fibers are aligned parallel with the l... | 02/11/1997 |
| 5202524 | Gun and method of mounting a sight thereon A gun including a main body including a barrel and defining an opening, and a sight mounted onto the main body, wherein the sight includes a top portion protruding externally of the main body; and base apparatus rigidly connected to and extending from the... | 04/13/1993 |
| 4669212 | Gun barrel for use at high temperature The present invention provides a gun capable of operating at relatively higher temperatures. The barrel of the gun is made up of at least two layers. The inner layer is of a refractory material which may be a metal refractory or a non-metal refractory. Th... | 06/02/1987 |
| 4359810 | Method of forming cartridge chambers in firearm barrels Method of forming a cartridge chamber in the bore of a firearm barrel, which comprises driving into the bore of the barrel from the butt end thereof a mandrel of the surface configuration of the peripheral wall and mouth of the cartridge chamber, whereby ... | 11/23/1982 |
| 4058925 | Concepts of remington super trap choke A pattern control system for a shotgun and the method of making the system in which one or more choke attachments are detachably mounted on the muzzle end of the shotgun barrel and the barrel bore and one or more progressively reduced choke constrictions,... | 11/22/1977 |
