Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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 |
| 7412975 | Handheld gas propelled missile launcher A handheld gas propelled missile launcher which deploys projectiles of varying payloads through the muzzle, and a ballistic module for changing payloads expeditiously. ... | 08/19/2008 |
| 7254914 | Hydrogen operated recreational launcher A hydrogen operated gun for shooting projectiles such as a paint pellet. Hydrogen gas is supplied to a combustion chamber and is combusted by a trigger controlled piezo igniter. The hydrogen may be supplied by a hydrogen generator or by a hydrogen storage container ... | 08/14/2007 |
| 7213589 | Compressed-gas gun A compressed gas injection device includes a projectile course for receiving and accelerating projectile bodies, a compressed gas housing which is connected to the projectile course and which is divided up into a compressed gas chamber and a working chamber by a par... | 05/08/2007 |
| 7090260 | Coupling for compressed gas piston driven nailing and fuel cartridge A coupling (13) is used for a fuel cartridge (2) outlet nozzle (1) designed to supply a compressed gas mounting device with compressed gas and an intake nozzle (3) on the device's intake system (4). The coupling is a single piece f... | 08/15/2006 |
| 7059316 | Paintball shooting structure for a paintball gun A paintball shooting structure includes a cartridge in combination with a percussion device to receive multiple paintballs therein and is provided for a paintball gun. When an impact section of a firing pin of the percussion device is struck, the striking force push... | 06/13/2006 |
| 6619278 | Non-lethal ammunition for a firearm A projectile assembly that enables a compressed gas powered projectile to be fired from a traditional ammunition firearm. The projectile assembly includes a casing that is shaped like the casing of traditional ammunition. A projectile is set into the tip ... | 09/16/2003 |
| 6591731 | Method and apparatus for penetrating hard materials using a energetic slurry A method and apparatus for drilling and penetrating hard materials utilizes a high velocity gun system that fires multiple shots of a projectile and an energetic slurry at the surface of the material to be penetrated. The penetrating device includes one o... | 07/15/2003 |
| 6408731 | Liquid disrupter with reduced recoil The disrupter (16) includes an elongated hollow barrel (18) having a cylindrical inner chamber (20), a closed rear (26) end and an opened front end (22), the latter closed with a front frangible seal (38). A channel member (46) partly surrounds an interme... | 06/25/2002 |
| 6405628 | Method and apparatus for penetrating hard materials A method and apparatus for drilling and penetrating hard materials utilizes a high velocity gun system that fires multiple shots of a projectile and an energetic slurry at the surface of the material to be penetrated. The penetrating device includes one o... | 06/18/2002 |
| 6389978 | Gun barrel cleaning shell A gun barrel cleaning shell uses a pressurized cartridge alone or within a shell casing to propel cleaning material through the bore of the firearm. Inside the cartridge is a strike pin that when the firing pin of the firearm is actuated will cause the st... | 05/21/2002 |
| 6142056 | Variable thrust cartridge The present invention is a variable thrust cartridge comprising a water-molten aluminum reaction chamber from which a slug is propelled. The cartridge comprises a firing system that initiates a controlled explosion from the reaction chamber. The explosive... | 11/07/2000 |
| 6095051 | Self loading gun cartridge The invention provides a cartridge for use in a firearm, the cartridge having a projectile mounted in or on a nose portion thereof; the cartridge interior communicating with the projectile via a gas passage, a valve for controlling propellant gas flow thr... | 08/01/2000 |
| 5988070 | Plasma injection device for an electrothermal gun A plasma injection device in combination with a projectile includes a reusable multi-part propellant case which has a cartridge base and an electrically insulating case body directly attached to the cartridge base. The case body has an interior, a front e... | 11/23/1999 |
| 5962805 | Gas cartridge A cartridge has a case comprising a body housed telescopically within a sleeve. The body encloses a main chamber which contains gas under pressure, and a valve mechanism for venting gas from the chamber into an expansion chamber. The pressure of the gas i... | 10/05/1999 |
| 5909000 | System for shooting using compressed gas A shooting system providing a barrel with an open forward end and a closed rear end and a projectile containing a propellant under pressure located in the barrel. A wad in the bore has a forward holding member allowing the rearward portion of the projecti... | 06/01/1999 |
| 5898124 | Plasma injection device for an electrothermal gun A plasma injection device (plasma burner) for a projectile has a multi-part propellant case and a plasma-receiving container attached to the propellant case. The multi-part propellant case includes a cartridge base; an electrically insulating case body di... | 04/27/1999 |
| 5789696 | Method for launching projectiles with hydrogen gas A method for propelling a projectile by applying a high power pulse of elrical current to a metal fuel element (of Al, Al-Li, or Al-Mg) causing the element to explode dispersing molten metal fuel into water with which it reacts to rapidly generate hydrog... | 08/04/1998 |
| 5739462 | Method and apparatus for creating pyrotechnic effects A pyrotechnic device includes a launcher for launching and igniting a plurality of pyrotechnic stars for creating an aerial fireworks display. The launcher comprises a launching tube having an igniter that ignites the pyrotechnic stars as they are being e... | 04/14/1998 |
| 5719351 | Anti-rupture method for liquid propellant gas inflator An inflator of a vehicle safety restraint system includes a housing having a reservoir of liquid propellant. A combustion chamber is disposed in the housing in communication with the liquid propellant reservoir. A regenerative piston is movably disposed w... | 02/17/1998 |
| 5703322 | Cartridge having high pressure light gas A cartridge for accelerating a projectile includes a light gas pressurized in a sealed container to 5,000-10,000 psi. Upon ignition in the sealed container, a gas mixture having a low or intermediate molecular weight and a high or low energy density is ap... | 12/30/1997 |
| 5700972 | Gas cartridge A cartridge has a case comprising a body (10) housed telescopically within a sleeve (14). The body encloses a main chamber (21) which contains gas under pressure, and a valve mechanism for venting gas from the chamber (21) into an expansion chamber (61). ... | 12/23/1997 |
| 5652405 | System for shooting using compressed gas A shooting system discharges a projectile having a chamber that stores a compressible fluid in a compressed state and having a valve mounted in a rear end of the projectile. The shooting system includes a longitudinal barrel having an opening on a front e... | 07/29/1997 |
| 5511481 | Lightweight pyrotechnic compressor A breech assembly similar to a modified shotgun breech is used to fire gaus combustion products from a shotgun type pyrotechnic cartridge into a tank that holds the compressed gas. This compressed gas can then be used to drive power tools, inflation asse... | 04/30/1996 |
| 5431105 | Electrothermal chemical cartridge An electrothermal chemical cartridge with a fuse of tapering cross section enables higher impulse energy to be imparted to a projectile by means of complete controlled burning of propellant. A long, narrow tube filled with propellant has a fuse on its ins... | 07/11/1995 |
| 5429030 | Hybrid electrothermal light gas gun and method A pressurized light gas in a first chamber segment of a light gas gun is heated and highly pressurized by an electric discharge. Solid chemical propellant in a second chamber segment behind and separated from the first chamber segment by a perforated wall... | 07/04/1995 |
| 5341744 | Cleaning shell for firearms An apparatus for cleaning the bore of a firearm including a shell housing having a rearwardly oriented base portion, a substantially tubular body defining a cavity, and a forward end, a tank for confining a compressed fluid, the tank being disposed within... | 08/30/1994 |
| 5303633 | Shock compression jet gun A shock compression jet gun with associated explosive charge assembly. The shock compression jet gun features a breech for storage of the explosive charge assembly, a projectile tube, and an expansion nozzle disposed between the breech and projectile tube... | 04/19/1994 |
| 5217948 | Phase change cooling for an electromagnetic launch The device employs Hybrid Pulsed Transformer principles employing a projectile with an internal pay load. The projectile carries a light weight shorted secondary coil or coils constructed of aluminum and the projectile acts as a moving secondary through a... | 06/08/1993 |
| 5194690 | Shock compression jet gun A shocck compression jet gun with associated explosive charge assembly. The shock compression jet gun features a breech for storage of the explosive charge assembly, a projectile tube, and an expansion nozzle disposed between the breech and projectile tub... | 03/16/1993 |
| 5187323 | Pressurized gas cartridge ammunition In a cartridge casing there is provided a telescopic valve stem having at its forward end a main outlet valve and at its rearward end a servo- or pressure relief valve, a piston-like collar on the forward part of the valve stem divides the interior of the... | 02/16/1993 |
| 5078117 | Projectile propellant apparatus and method A projectile propellant device is adapted to supply a compressed gas from a compressed gas container for providing the propulsion force for a projectile or for providing the operating force for a gas powered device. The propellant device includes a gas co... | 01/07/1992 |
| 5072647 | High-pressure having plasma flow transverse to plasma discharge particularly for projectile acceleration A projectile is accelerated through a gun barrel in response to high pressure gas applied to the rear of the projectile in response to a high pressure plasma discharge. Plasma from the discharge flows transversely of the discharge into a chamber through m... | 12/17/1991 |
| 4993309 | Liquid propellant weapon system This invention provides a liquid propellant round of ammunition having a traveling charge which is ignited after both such charge and the projectile have received an initial forward acceleration.... | 02/19/1991 |
| 4972777 | Ammunition for liquid propellant gun A round of ammunition is provided including a stub cartridge case carrying a primer, a booster, and a projectile having a plurality of longitudinally extending grooves in its base which are obturated by the case.... | 11/27/1990 |
| 4945809 | Liquid propellant gun This invention provides an annular piston, annular control valve, liquid propellant gun system, having a dual angle injection mechanism to provide both bore and chamber gas requirements with a single injection control valve. The dual angle feature assures... | 08/07/1990 |
| 4941390 | Liquid propellant gun A feature of this invention is the provision in an annular piston, annular control valve, liquid propellant gun, of a check valve to permit liquid propellant under relatively low pressure to flow from the supply system into the combustion chamber and to p... | 07/17/1990 |
| 4934242 | Liquid propellant gun for projectiles of different masses and velocities A gun is provided having a housing, a main gun barrel, a combustion chamber, a liquid propellant pumping chamber, and valve means for providing a variable orifice injection port intercoupling said pumping and combustion chambers which includes means for c... | 06/19/1990 |
| 4932306 | Method and apparatus for launching a projectile at hypersonic velocity A projectile is accelerated to hypersonic velocity in an initially closed barrel of a diameter considerably larger than the projectile diameter which is filled with a compressed fuel-oxidizer mixture. The projectile comprises a conical nose portion, an in... | 06/12/1990 |
| 4932327 | Liquid propellant gun This invention provides an annular piston, annular control valve, liquid propellant gun system, having a dual angle injection mechanism to provide both bore and chamber gas requirements with a single injection control valve. The dual angle feature assures... | 06/12/1990 |
| 4930423 | Liquid propellant weapon system This invention provides a liquid propellant round of ammunition having a traveling charge which is ignited after both such charge and the projectile have received an initial forward acceleration.... | 06/05/1990 |
