Famous Patents
3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 8156870 | Lightweight cartridge case Disclosed is an ammunition cartridge case that includes a sleeve, a base fixedly attached to the sleeve and a fiber reinforced polymer composite annulus that is at least partially within the base. In certain embodiments, the sleeve and the base are formed partly or ... | 04/17/2012 |
| 7841279 | Delayed extraction and a firearm cartridge case A high pressure cartridge case is provided for firearms with blowback operating systems. The cartridge case is provided with a primer support member that supports a primer in a rearward end of a cartridge case. The support member is slideable rearwardly in the cartr... | 11/30/2010 |
| 7644662 | Elastic retention ring for combustible casings An elastic retention ring for the combustible casing of a piece of ammunition with respect to a base, the ring including two concentric substantially ring-shaped portions, one internal the other one external. The portions are linked by radial arms, and are continuou... | 01/12/2010 |
| 7441504 | Base for a cartridge casing body for an ammunition article, a cartridge casing body and an ammunition article having such base, wherein the base is made from plastic, ceramic, or a composite material A base for a cartridge casing body for an ammunition article, the base having a ignition device; an attachment device at one end thereof, the attachment device being adapted to attach the base to a cartridge casing body; wherein the base is made from plastic, cerami... | 10/28/2008 |
| 7323222 | Anaerobic adhesive compositions curable on inactive surfaces The present invention relates to anaerobically curable compositions, methods of preparation and methods of use that provide enhanced physical properties when cured in contact with untreated inactive surfaces. The compositions which include isobornyl acrylate, isobor... | 01/29/2008 |
| 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 |
| 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 |
| 7171886 | Pipe mortar To seal a pipe mortar, a sealing element (3, 6) is inserted between the pipe (1) and the base (2), with the element elastically balancing out the axial relative movements between the pipe (1) and the base (2). The sealing element (... | 02/06/2007 |
| 7165496 | Piston head cartridge for a firearm A firearm cartridge is provided with a case body and a piston head. The piston head is movably engaged with a rearward end of the case body. The piston head seals the rearward end of the case body to contain propellant gases in the case body when the firearm cartrid... | 01/23/2007 |
| 7146897 | UV/visible light and anaerobic curable composition This invention relates to a visible light or UV/visible light and anaerobically curable composition for encapsulating the surface of the primer mix disposed in the primer cup, particularly for use in center fire ammunition. ... | 12/12/2006 |
| 7004074 | Controlled fluid energy delivery burst cartridge A modified gas delivery cartridge. A conventional straight-sided brass cartridge case is primed and then filled with solid propellant. A burst cup is then inserted in the case mouth. The burst cup is embossed with a cross or other shape to promote predictable ruptur... | 02/28/2006 |
| 6883413 | Visible and UV/visible light anaerobic curable primer mix coating This invention relates to a visible light or UV/visible light and anaerobically curable composition for encapsulating the surface of the primer mix disposed in the primer cup, particularly for use in center fire ammunition. ... | 04/26/2005 |
| 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 |
| 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 |
| 6612063 | Weapon, in particular a self-loading pistol In a weapon, in particular a self-loading pistol, having a barrel (1) and a breech block (4), it being possible for a cartridge (2) to be fired in the barrel (1) by being acted upon by means of a firing pin (7), to identify a fired cartridge (2) and/or to... | 09/02/2003 |
| 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 |
| 6505560 | Spring disc for securing a combustible cartridge case to a case base A spring disc includes a contiguous outer ring including a first plurality of holes and having a contiguous, upwardly curved portion having an outer edge. A middle ring encompasses a second plurality of holes, and a contiguous inner ring, is encompassed b... | 01/14/2003 |
| 6460464 | Adhesive for ring seal in center fire ammunition The present invention provides UV/anaerobic dual cure adhesives, particularly well-suited for sealing the ring around the primer cup in center fire ammunition by UV cure and the primer cup in the cartridge by anaerobic cure.... | 10/08/2002 |
| 6408764 | Case base for large-caliber ammunition A case base (1; 1') for large-caliber ammunition, in which the case jacket (2) comprises a combustible material, with the case base (1; 1') comprising a metallic base plate (3) and a support ring (4; 4') that projects axially beyond the surface of the bas... | 06/25/2002 |
| 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 |
| 6305291 | Shotgun cartridge case-sleeve and a cartridge made therefrom Shotgun cartridge cases are disclosed which are produced from a unitary body of plastic material. The shotgun cartridge cases include a cylindrical wall with a based portion which includes a central opening adapted to receive a primer, and a number of gro... | 10/23/2001 |
| 6286432 | Bayonet primer A primer assembly includes a head loading assembly including a frontward throughbore, and a rearward throughbore having a stop. A closing plug assembly includes a conically bored open frontward end and an open cylindrical rearward end including an outer f... | 09/11/2001 |
| 6272994 | Plastic liner for bayonet primers A flashtube liner for a primer assembly including a head loading assembly. A flashtube containing an ignition charge has an open rearward end connected to the head loading assembly. A closing plug assembly includes a conically bored open frontward end and... | 08/14/2001 |
| 6257148 | Arrangement for supporting mortar shell into barrel The invention relates to an arrangement for supporting a mortar shell into the barrel of a mortar weapon by using a separate support piece fixed to the tail of the mortar shell. In the arrangement the support piece is attached to the tail of the mortar sh... | 07/10/2001 |
| 6247412 | Electric contact assembly for a cartridge to be fired from a weapon barrel An electric contact assembly in combination with a cartridge to be fired from a weapon barrel. The cartridge has a cartridge case including a metal bottom having an externally exposed outer face; and an electronic unit disposed in the cartridge case. The ... | 06/19/2001 |
| 6247411 | Electric contact assembly for a cartridge to be fired from a weapon barrel An electric contact assembly in combination with a cartridge to be fired from a weapon barrel. The cartridge has a cartridge case including a metal bottom having an externally exposed outer face; and an electronic unit disposed in the cartridge case. The ... | 06/19/2001 |
| 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 |
| 6131519 | Propellant case for an ammunition cartridge A propellant case includes a case sleeve having a longitudinal axis; a case bottom including a case bottom base; and an axially extending case bottom dome having a socket for supporting a primer therein. The case bottom base is releasably attached to the ... | 10/17/2000 |
| 6101950 | Projectile simulation means Projectile simulation means serve for an acoustic and/or optical representation of the firing of canons or the like. The projectile simulation means are arranged in a pivotable receiving plate of a firing apparatus. There is a danger that, when pivoting t... | 08/15/2000 |
| 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 |
| 5969288 | Cartridge case, especially for a smooth bore gun Cartridge case (1), especially for a smooth bore gun, comprising three elements made of plastic, namely a tubular body (2) with an assembly end (2a) which tapers into the shape of a cone frustum, a base (3) which has a frustoconical bore (3a) with substan... | 10/19/1999 |
| 5936189 | Cartridged ammunition The cartridged ammunition comprises a projectile (11) and a cartridge case (10) receiving the latter. The cartridge case (10) contains a cartridge (12) limiting a high-pressure space (21) in which a propelling charge (14) is located. The cartridge (12) is... | 08/10/1999 |
| 5834681 | Reloadable high-low pressure ammunition cartridge A high-low pressure ammunition cartridge includes a case containing a gas expansion chamber and a missile chamber separated from each other by a pressure containment wall containing one or more pressure control ports providing fluid communication between ... | 11/10/1998 |
| 5710391 | Recoil reducer wad for ammunition Ammunition cartridges are disclosed comprising means for reducing recoil fed to a weapon on discharge of a cartridge. The recoil reducing means comprises non-supportive material between a propellant charge and an end plate of the cartridge in which energy... | 01/20/1998 |
| 5563365 | Case base/combustible cartridge case joint A new joint for use in combustible cartridge case munitions which reduces e risk of combustible cartridge case and case base and seal assembly separation during routine handling and minimizes the problems related to dechambering, comprised of a seal mated... | 10/08/1996 |
| 5388499 | Cartridge for explosively operated industrial tools A cartridge (24) for explosively operated industrial tools is disclosed. The tool (10) is of the type that has a piercer pin (46) that pierces through a surface of the cartridge during assembly of the cartridge within the tool. Then, upon firing of the ca... | 02/14/1995 |
| 5297491 | Casing bottom for a propelling charge casing A casing bottom or stub casing for a propelling charge casing whose base plate (1) has an exterior or outer surface which is curved inwardly in an annular region (7) so that the casing bottom is able to sufficiently axially expand under the high gas press... | 03/29/1994 |
