Did You Know...
...that several people are credited with the invention of the flush toilet? Most people have heard of Thomas Crapper (1837-1910), the sanitary engineer who invented the valve-and-siphon arrangement that made the modern toilet possible. Another claimant to "the throne" was British inventor Alexander Cumming who patented a toilet in 1775. Then there's a nameless Minoan (a native of ancient Crete) who lived 4,000 years ago who supposedly was ahead of his time and created the first flush toilet!
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| Number | Title | Issue Date |
| 8011301 | Cartridge for a firearm A cartridge case for a firearm is formed to contain a .338 caliber bullet. The case includes a cylindrical body portion with a central aperture in the head end for receipt of a primer and a cartridge extraction groove formed around the periphery of the body portion ... | 09/06/2011 |
| 7938067 | Reduced firing signature weapon cartridge A reduced signature weapon cartridge is provided which, when fired, produces little or no muzzle blast or noise signature. In particular, a reduced signature weapon cartridge of the present invention comprises a movable piston disposed within the cartridge, disposed... | 05/10/2011 |
| 7832337 | Shellcase for controlling reflections of primer shockwaves A shellcase body for use as part of an ammunition cartridge, which includes a base portion at one end, a middle portion having a substantially straight sidewall and joined with the base portion, and a shoulder portion joined to and extending from the middle portion.... | 11/16/2010 |
| 7607392 | Shellcase for controlling reflections of primer shockwaves A shellcase body for use as part of an ammunition cartridge, which includes a base portion at one end, a middle portion having a substantially straight sidewall and joined with the base portion, and a shoulder portion joined to and extending from the middle portion.... | 10/27/2009 |
| 7252038 | Industrial ammunition A projectileless ammunition system (20; 320) includes a metallic case (22; 322). A propellant charge (26; 326) is carried by the case and covered by an over-powder member (24; 324) in the absence of a separate projectile. The ammunition i... | 08/07/2007 |
| 7225741 | Reduced energy training cartridge for self-loading firearms A two piece, two-stage, rechargeable, reusable, reduced-energy mechanically operating cartridge is provided for launching a bullet of various compositions from a dedicated or modified firearm. The cartridge unit is comprised of a primary case, a piston sleeve, a pro... | 06/05/2007 |
| 7213519 | Composite polymer based cartridge case having an overmolded metal cup, polymer plug base assembly A cup and plug assembly of a base for a polymer based ammunition cartridge case body includes a cylindrical sleeve joined to the base. The base includes a plug molded over a cup. The cup includes a first annular cup portion extending in a first direction from a web ... | 05/08/2007 |
| 7086336 | Firearm cartridge and case-less chamber A firearm cartridge has a case configured with a relatively straight-walled portion and a shoulder portion for housing a quantity of propellant. The case further includes a neck for retaining a bullet. The straight-walled portion defines a base cavity having an inte... | 08/08/2006 |
| 7069863 | Industrial ammunition A projectileless ammunition system (20; 320) includes a metallic case (22; 322). A propellant charge (26; 326) is carried by the case and covered by an over-powder member (24; 324) in the absence of a separate projectile. The ammunition i... | 07/04/2006 |
| 7066092 | Industrial ammunition A projectileless ammunition system (20; 320) includes a metallic case (22; 322). A propellant charge (26; 326) is carried by the case and covered by an over-powder member (24; 324) in the absence of a separate projectile. The ammunition i... | 06/27/2006 |
| 7024342 | Thermal flow simulation for casting/molding processes A numerical procedure for simulating the behavior of incompressible, viscous fluid in a casting/molding process. The method is based on classical fluid dynamic equations and uses control volume-finite element and numerical techniques to solve the momentum and energy... | 04/04/2006 |
| 7011028 | Rimfire cartridge for a firearm A firearm cartridge with a rimmed metal case having a body portion having a rim and a cylindrical wall portion adjacent to the rim. The body portion has dimensions corresponding to a 22 Long Rifle specification. The case has a tapered shoulder portion contiguous wit... | 03/14/2006 |
| 6932938 | Method and apparatus for containing and ejecting a thixotropic metal slurry A container system including a vessel for holding a thixotropic semi-solid aluminum alloy slurry during its processing as a billet and an ejection system for cleanly discharging the processed thixotropic semi-solid aluminum billet. The crucible is preferably formed ... | 08/23/2005 |
| 6923122 | Energetic material initiation device utilizing exploding foil initiated ignition system with secondary explosive material A device and method that employs a detonation event as an energy source for producing a pyrotechnic output. The device includes an initiation charge that is selectively detonated by an exploding foil initiator. Byproducts from the detonation event are attenuated by ... | 08/02/2005 |
| 6918973 | Alloy and method of producing the same In accordance with a preferred embodiment of the invention, an alloy or other composite material is provided formed of a bulk metallic glass matrix with a microstructure of crystalline metal particles. The alloy preferably has a composition of (XaNib... | 07/19/2005 |
| 6862993 | Shell for bullets of automatic or semiautomatic firearms with intertial closure A shell for bullets of automatic or semiautomatic firearms with inertial closure, comprising a hollow cylindrical body which is closed, at one of its axial ends, by a head and is adapted to accommodate a bullet at the opposite axial end, the head being centrally pro... | 03/08/2005 |
| 6832556 | Passive coatings and improved configurations for gun cartridges, solid rockets, and caseless ammunition Passive coatings accelerate burning at interfaces between rapidly burning propellants and thermally conductive or endothermic inert surfaces. The coatings, useful in firearm cartridges, firearm chambers, and solid rocket motors, reflect infrared energy from the comb... | 12/21/2004 |
| 6779461 | Industrial ammunition A projectileless ammunition system (20; 320) includes a metallic case (22; 322). A propellant charge (26; 326) is carried by the case and cover by an over-powder member (24; 324) in the absence of a separate projectile. The ammunition is ... | 08/24/2004 |
| 6752084 | Ammunition articles with plastic components and method of making ammunition articles with plastic components An ammunition article includes a molded plastic cartridge casing body having a first end and a second end, and a projectile attached to the first end of the cartridge casing body. The cartridge casing body is molded around at least a portion of the projectile. A mol... | 06/22/2004 |
| 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 |
| 6675717 | Ultra-short high-power firearm cartridge A short-action firearm cartridge has unique pressure, length and diametric relationships. The overall length of the cartridge case has a ratio to a diameter thereof, at a predetermined location on a wide portion of the case, of no more than about 3.5. Suc... | 01/13/2004 |
| 6672219 | Low observable ammunition casing A low observable, brass ammunition cartridge casing with an exterior surface having a colored coating which renders the cartridge casing low observable. The colored coating may be deposited onto the exterior surface by various processes, such as electropl... | 01/06/2004 |
| 6595138 | High-power firearm cartridge A short-action firearm cartridge has unique pressure, length and diametric relationships. The overall length of the cartridge case has a ratio to a diameter thereof, at a predetermined location on a wide portion of the case, of no more than about 4.2. Suc... | 07/22/2003 |
| 6568331 | Electrical igniter cap An electrical igniter cap has a reproducible igniter characteristic by virtue of the fact that, at the firing side, an igniter unit 20 is covered by a sheeting of plastic material 21 which is rupture-resistant but tears quickly, and also at the firing sid... | 05/27/2003 |
| 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 |
| 6532876 | Gun cartridge The present invention provides a method of determining the efficiency of a gun cartridge by determining the water weight volume of the cartridge; determining the bore diameter of the gun barrel; determining the weight of the bullet; and calculating the ef... | 03/18/2003 |
| 6523475 | Firearm cartridge and case-less chamber A firearm cartridge has a case configured with a straight-walled portion and a radial shoulder for housing a propellant. The case further includes a neck for retaining a bullet. The straight-walled portion defines a base cavity having an interior base dia... | 02/25/2003 |
| 6477958 | Device to link a case and a projectile and process to mount a band onto a projectile implementing such a linking device A device including a ring for linking a case and a projectile carrying a sealing band having a rear skirt providing low pressure sealing and a front rib lodged in a first groove in the projectile. The ring has a flared rear part connected with the case an... | 11/12/2002 |
| 6354221 | High-power firearm cartridge A firearm cartridge case capable of withstanding internal gas pressures of at least about 50,000 psi has two substantially cylindrical portions of significantly different diameters interconnected by a frusto-conical shoulder portion. The case has a ratio ... | 03/12/2002 |
| 6324984 | Payload mechanism for low impulse cartridges This low impulse payload cartridge for automatic weapons includes a case, a piston, an ogive, a payload cup, a payload, and a link. The payload cup and payload is seated into the forward portion of the piston. Gas passages permit propellant gases to bleed... | 12/04/2001 |
| 6324983 | Sub-caliber projectile for low impulse cartridges A sub-caliber projectile cartridge for automatic weapons includes a case, a piston, a forward cavity/an inner bore in the piston, a sub-caliber projectile, and a link. The sub-caliber projectile is seated into the forward cavity/inner bore located in the ... | 12/04/2001 |
| 6293203 | Firearms and ammunition The invention relates to ammunition suitable for firing from a self-loading sidearm comprising a cartridge adapted to fire a projectile, the cartridge case having at one end a portion of reduced diameter, the projectile being held in the said portion of r... | 09/25/2001 |
| 6240850 | Bullets for use in hitting targets at short range An improved bullet featuring a large, heavy non-aerodynamically shaped projectile that is to be used in short range life or death situations. This projectile and cartridge would be used in large game applications where the intent is not to fire unless in ... | 06/05/2001 |
| 6178889 | Low impulse telescoping cartridge A low impulse telescoping cartridge includes a case, a piston, a projectile, and a link. The projectile is seated into the forward portion of the piston. Gas passages permit propellant gases to bleed into the cavity behind the projectile and to accelerate... | 01/30/2001 |
| 6161482 | Multi-disk shell and wad The present invention is a multidisk shell and wad for use in a multidisk shell. The wad consists of a wad base, a cushioning section attached at a first end to a top section of the wad base, and at least three alignment arms attached to a second end of t... | 12/19/2000 |
| 6038978 | Shotshell having a protective barrier layer A shotshell having a hull with a protective barrier layer of fiber or other alternate material that prevents the hull from being in contact with the chamber. The protective layer may cover any portion of the exterior of the hull. The protective layer prot... | 03/21/2000 |
| 5979331 | Cartridge for a firearm A cartridge for a firearm includes a cavity at the rear end with an inwardly extending flange. The cartridge includes a cylindrical member having a first end for receiving a bullet and a second end defining a second end wall having an aperture. The second... | 11/09/1999 |
| 5970879 | High-power firearm cartridge for short-action chamber and bolt assembly A firearm cartridge case capable of withstanding internal gas pressures of at least about 50,000 psi has two substantially cylindrical portions of significantly different diameters interconnected by a frusto-conical shoulder portion. The case has a ratio ... | 10/26/1999 |
| 5841063 | Cased ammunition A cartridge case for service ammunition is designed to reduce the damage effect on the environment in the event of an extreme pressure increase in the propellent powder forming part of the charged ammunition, upon accidental ignition of the propellent pow... | 11/24/1998 |
| 5822904 | Subsuoic ammunition An ammunition cartridge for producing subsonic flight of a projectile therefrom at substantially all angles of fire relative to the horizontal, including an elongated, generally cylindrical case including a closed end containing a primer therein, a body p... | 10/20/1998 |
