Did You Know...
...that in the early 1940s GE engineer James Wright was charged with a task of utmost importance to the war effort: develop a cheap substitute for rubber that could be used to produce tires, gas masks and a whole host of military gear. Wright tackled the task diligently -- and wound up inventing Silly Putty.
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| Number | Title | Issue Date |
| 7802394 | Rifle barrel and method of determining rifling twist for very long range accuracy A rifle having a rifled barrel and a cartridge having a bullet having a diameter, a length, a ballistic coefficient (BC), and a muzzle velocity (V1) greater than 1250 ft/sec are related to achieve accuracy at very long range in that the twist of the rifli... | 09/28/2010 |
| 7314006 | Nonlethal canister tank round A nonlethal canister tank round comprising a cartridge having a combustible case and containing propellant; a canister projectile attached to the cartridge, the canister projectile being generally cylindrical, comprising high density polyurethane foam and including ... | 01/01/2008 |
| 7254913 | Revolver for firing high velocity ammunition A revolver for firing high velocity ammunition includes a frame, a cylinder, a barrel, and a firing mechanism. The revolver may include one or more of the following, each of which is especially adapted for use in the context of firing high velocity ammunition: space... | 08/14/2007 |
| 7207272 | Identifiable bullet which is unduplicatable This identifiable bullet which is unduplicatable by a third party places plural (two or more) sets of identification codes onto or into a bullet and to make the identification codes in concordance. Thus, the bullet remains identifiable. At least one set of the ident... | 04/24/2007 |
| 7204419 | Method and apparatus for reading firearm microstamping An indicia for marking on an object, such as a cartridge case, for representing selected information, such as identification indicia identifying the firearm that discharged the cartridge, and methods and apparatus for generating, imprinting and reading the identific... | 04/17/2007 |
| 7152357 | Composite firearm barrel assemblies A firearm barrel includes an elongate metal insert member and a rigid sleeve surrounding the insert member along a majority of the length of the insert member. A casing is formed around at least a portion of the sleeve, preferably by injection molding. Breech and mu... | 12/26/2006 |
| 7143697 | Apparatus and method for identifying ammunition The present invention is directed to identifying ammunition. In one embodiment, an identifiable ammunition cartridge includes a bullet having a first identification surface, a casing having a second identification surface, and an identifying code positioned on at le... | 12/05/2006 |
| 7140140 | Choke tube Different colors are prepared for inner shapes that define different design ballistic patterns. Wear resistant coatings of the different colors are applied over outer surfaces of tube bodies having the design ballistic patterns corresponding to the colors of the wea... | 11/28/2006 |
| 7111423 | Method and apparatus for reading firearm microstamping An indicia for marking on an object, such as a cartridge case, for representing selected information, such as identification indicia identifying the firearm that discharged the cartridge, and methods and apparatus for generating, imprinting and reading the identific... | 09/26/2006 |
| 7047886 | Method and apparatus for removing obstructions in the mines The present invention is directed to a system for fragmenting rock obstacles and obstructions in mines. The system uses a projectile having a flat or concave nose and a detonating device that has a safety pin to prevent a striker from prematurely igniting the primer... | 05/23/2006 |
| 7013810 | Projectile for delivery of a tranquilliser A projectile mainly for drug delivery comprises a tubular body casing 1 which defines a cavity 2 for containment of a tranquilizing drug. The casing has an end plug 3 which coaxially supports a hollow needle 4 projecting forward through a... | 03/21/2006 |
| 7013592 | Guns with exterior surface configured barrels Gas-operated automatic and semi-automatic guns are improved by providing their barrels with unique exterior surface configurations to reduce the weight of their barrels while retaining the barrels' original stiffness and to cause the barrels to dissipate heat faster... | 03/21/2006 |
| 6916229 | Machine-implemented method for forming a release surface of a mold A machine-implemented method is provided for forming a release surface of a mold. The mold has a mold cavity confined by an inner peripheral surface defining a mold cavity axis. The method includes the steps of: (a) bringing a grinding surface of a rotary grinding p... | 07/12/2005 |
| 6779716 | Rifled weapon engraver and scanner A computer-controlled laser etching probe etches a firearm-identifying indicia such as a barcode encoded serial number into the barrel and breech of a bore of a firearm. Owner registration data coupled with the serial number is stored in a central database. A comput... | 08/24/2004 |
| 6769209 | Removable interior barrel adaptable in an interior of an original barrel for ammunition or pellets for sport rifles A removable inner barrel apparatus has a rifle with barrel extending therefrom, an inner barrel having an end through which ammunition can exit, a pressure nut removably fastening the barrel of the rifle to the inner barrel, and a compression spring positioned withi... | 08/03/2004 |
| 6739083 | Runout correction rifle barrel A rifle barrel for realigning a projectile which is propelled through the barrel by gas pressure, the barrel comprising: a bore having a bore diameter through which a projectile may travel; rifling ridges within the bore; and at least one bore expansion chamber in t... | 05/25/2004 |
| 6615702 | Gun barrel A gun barrel for a gun has an elongated tube with an axial bore extending completely through the tube from the breech end to the muzzle end. The tube and the contact surface in the axial bore, which contains propellant gasses behind the projectile and eng... | 09/09/2003 |
| 6574898 | Firearm frame and barrel assembly Revolver frame and barrel assembly including a frame, a barrel shroud carrying a sight and keyed in sight alignment with the frame, and a generally cylindrical barrel having a rifled bore and extending through the barrel shroud and threadably engaged in t... | 06/10/2003 |
| 6497065 | Firearm barrel having protective sleeve A firearm barrel has components made of different materials. The barrel includes an elongate metal insert member. A rigid sleeve surrounds the insert member along a majority of the length of the insert member. A casing is located around at least a portion... | 12/24/2002 |
| 6487951 | Apparatus and method for firing a projectile An apparatus and method for firing a projectile in which one part of the projectile rotates and the other part of the projectile does not rotate where is it used for delivering a line. The projectile firing apparatus includes a projectile having a part th... | 12/03/2002 |
| 6467213 | Method of providing a weapon barrel with an internal hard chromium layer A method of providing an inner surface of a weapon barrel with a hard chromium layer includes the steps of forming the hard chromium layer on the inner surface by galvanic separation; and thereafter heating the hard chromium layer beyond the re-crystalliz... | 10/22/2002 |
| 6427373 | Gun barrel rifling The rifling in a barrel of a firearm is modified in proximity to the muzzle to reduce the radial difference between the land diameter and the groove diameter to urge a bullet to expand fully into the grooves and ensure rotation of the bullet about its lon... | 08/06/2002 |
| 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 |
| 6374720 | Firearm with an expansion chamber with variable volume A device that is capable of adjusting the volume available to combustion gases following their expansion in a firearm includes (i) an expansion chamber connected to the barrel of the firearm through (ii) at least one connection hole disposed near the begi... | 04/23/2002 |
| 6324780 | Fluted gun barrel A gun barrel having a generally hollow cylindrically-shaped barrel with a first end, a second end, an inner surface and an outer surface. The inner surface defines a plurality of internal spiral grooves and the outer surface defines a plurality of externa... | 12/04/2001 |
| 6189431 | Small caliber gun barrel A composite barrel for a firearm comprising a substantially metallic liner and fiber reinforced resin, in which the fiber reinforced resin is under compression.... | 02/20/2001 |
| 6170187 | Weapon tube A rifled weapon tube (1), from which spin-stabilized projectiles (8) with driving bands (9) are fired. In order to reduce manifestations of wear on a driving band (9), it is known to stabilize a spin angle (δ) occurring during the firing or to cut deeper... | 01/09/2001 |
| 6085630 | Firearms The construction and arrangement of the projectile bearing surface interfaces rearward and forward of a recessed surface chamber of the projectile interface conjointly with the interfaces of bore wall areas segmented by recessed bore chambers which in con... | 07/11/2000 |
| 5974941 | Semi-automatic revolver An automatic revolver has a body, a barrel arranged in the body and having an inner passage provided with a thread-like formation, an ammunition-containing element from which a bullet is displaced into the barrel, the barrel being turnable relative to the... | 11/02/1999 |
| 5974641 | Method of shaping a muzzle-loading firearm barrel A firearm barrel having a barrel bore in a barrel bore entrance end is arranged to receive a conical milling tool directed to shape the conical entrance into the barrel bore entrance end, with a counter-bore drill followed by a second conical milling tool... | 11/02/1999 |
| 5915937 | Primarily independent composite/metallic gun barrel A substantially nonbonded composite/metallic gun barrel is disclosed. The gun barrel has a metallic liner and a composite casing disposed thereabout. Unlike composite/metallic gun barrels of the prior art, the embodiments of the present invention provide ... | 06/29/1999 |
| 5856631 | Gun barrel A gun barrel for a gun has an elongated tube with an axial bore extending completely through the tube from the breech end to the muzzle end. The tube and the contact surface in the axial bore, which contains propellant gasses behind the projectile and eng... | 01/05/1999 |
| 5844162 | Muzzle venting in muzzleloading rifles A muzzle-loading rifle having vents cut into the barrel near its muzzle. The rifling is timed with respect to the placement of the vents such that all vents are located within the rifling grooves. Depending on the number and size of the vents, the rifling... | 12/01/1998 |
| 5841058 | Firearms The construction and arrangement of projectile bearing surface interfaces rearward and forward of a recessed surface chamber of the projectile interface conjointly with the interfaces of bore wall areas segmented by recessed bore chambers which in conjunc... | 11/24/1998 |
| 5824944 | Metallic slug for industrial ballistic tool A projectile for an industrial ballistic tool is formed from zinc or a zinc based alloy. The projectile has symmetry about a longitudinal axis and a rear portion of the projectile engages rifling, either within the barrel of the industrial ballistic tool ... | 10/20/1998 |
| 5782030 | Barrel for muzzle loading firearm A barrel for a muzzle loading firearm. The inner cylindrical surface which defines the bore of the barrel has a main portion which is provided with rifling and a muzzle portion which is integral with the main portion which extends from the main portion to... | 07/21/1998 |
| 5765303 | Barrels for firearms and methods for manufacturing the same Rifling for the barrel of a firearm includes a first gain twist region for increasing the rotational velocity of a bullet as it travels from the breech towards the muzzle end of the barrel, and a second region in which the rifling is of a constant twist s... | 06/16/1998 |
| 5758446 | Fired bullet identification system The present invention relates to the fire arm industry and more particularly to a system that impresses a bar type code into the lead bullet that has been fired from a gun. The identifying markings are placed on the gun barrel lands with as little visibil... | 06/02/1998 |
| 5737863 | Muzzle loading firearm projectile A muzzle-loading firearm designed to utilize an ignition device carrier and to discharge projectiles having pre-cut rifling. The ignition device carrier serves to facilitate easy installation and removal of the primer or percussion cap required to dischar... | 04/14/1998 |
| 5666756 | Shotgun having light weight interchangeable barrel tubes with improved fit A tubular insert for a shotgun such as an over/under shotgun provides a chamber end portion with a smooth outer surface. In order to achieve a good fit between the tubular insert at the chamber end portion and the shotgun barrel at its breech, a polymeric... | 09/16/1997 |
