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.
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| Number | Title | Issue Date |
| 7610858 | Lightweight polymer cased ammunition An ammunition cartridge assembled from (1) a substantially cylindrical polymeric cartridge casing body defining a casing headspace with an open projectile-end and an end opposing the projectile-end, wherein the casing body has (A) a substantially cylindrical injecti... | 11/03/2009 |
| 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 |
| 7354354 | Article comprising a fine-grained metallic material and a polymeric material Lightweight articles comprising a polymeric material at least partially coated with a fine-grained metallic material are disclosed. The fine-grained metallic material has an average grain size of 2 nm to 5,000 nm, a thickness between 25 micron and 5 cm, and a hardne... | 04/08/2008 |
| 7335435 | Water storage device for fuel cell system and fuel cell system equipped with the same A water storage device for a fuel cell system, which includes: a water storage section; and a volume expansion absorber which contracts to absorb volume expansion of water in the water storage section. ... | 02/26/2008 |
| 7255134 | Carbon black-containing crosslinked polyethylene pipe having resistance to chlorine and hypochlorous acid Pipe or tubing of crosslinked polyethylene (“PEX”) containing less than 2% by wt. carbon black provides improved resistance to oxidizing agents such as chlorine and hypochlorous acid in water. The pipe may be further protected with a thin tubular core (inner lay... | 08/14/2007 |
| 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 |
| 7207274 | Sticky polymer lethal agent tracer A monitoring device and method comprising providing a projectile comprising a sticky medium, one or more sensors embedded therein, and a data transmitter receiving input from said one or more sensors, and firing the projectile at a target to which the medium will at... | 04/24/2007 |
| 7086421 | Crosslinked polyethylene pipe having a high density polyethylene liner A multilayer PEX pipe having improved resistance to oxidizing agents in water. The pipe has a thin tubular core (inner layer) of high density polyethylene and an outer layer of crosslinked polyethylene. The pipe may optionally have an oxygen barrier layer, such as p... | 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 |
| 7059234 | Ammunition articles and method of making ammunition articles A method of manufacturing an ammunition article, includes forming a projectile of an ammunition article at a first station of an apparatus, transporting the projectile within the apparatus to a second station of the apparatus, and injection molding at the second sta... | 06/13/2006 |
| 6964232 | Bullet with spherical nose portion A bullet includes a frontward facing aperture. Contained within the aperture is a relatively hard bullet frontal element that provides advantageous bullet impact performance. In one embodiment, the frontal element is a steel sphere that provides advantageous penetra... | 11/15/2005 |
| 6845716 | 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... | 01/25/2005 |
| 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 |
| 6600002 | Chain-extended poly(bis-azidomethyloxetane), and combustible cartridge cases and ammunition comprising the same A combustible cartridge case is provided that includes at least one energetic thermoplastic homopolymer or copolymer derived from, at least in part, poly(bis-azidomethyloxetane) prepolymer blocks terminated with isocyanate-reactive groups, such as hydroxy... | 07/29/2003 |
| 6526891 | Cartridge for setting devices A cartridge for setting devices if formed of a pot-shaped plastics material cartridge housing (2), which has a surface (8) contacting the inner contour (12) of a cartridge chamber of the setting device. A sealing cover (3) closes off the housing (2) at it... | 03/04/2003 |
| 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 |
| 6164209 | Shotshell basewad An ammunition cartridge has a tube extending along a central longitudinal axis from an aft end to a fore end. The tube has an interior surface and an exterior surface. A metallic head has a sleeve portion secured to the tube along an aft section of the tu... | 12/26/2000 |
| 6012394 | Casing for propellant charge A casing for a propellant charge for a piece of ammunition comprises a projectile and a stub. The casing comprises a substantially cylindrical envelope and a closing cover. The cylindrical envelope is made of a plastic material and is in the shape of a la... | 01/11/2000 |
| 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 |
| 5889090 | Processibility and lacing resistance when silanized pigments are incorporated in polymers White-pigmented polymers (particularly, polyolefins such as polyethylene) containing white pigments treated with at least one silane or a mixture of at least one silane and at least one polysiloxane are disclosed to improve processibility in compounding a... | 03/30/1999 |
| 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 |
| 5841062 | Tank cartridge A tank cartridge is described which is capable of withstanding rough handg during loading and unloading operations.... | 11/24/1998 |
| 5795923 | Photo-degradable shotshell of polyethylene and EVA-CO terpolymer A photo-degradable, molded, high strength plastic shotshell component having a degradation composition comprising as its combination of active ingredients linear polyethylene having a melt index of 0.1 to 5.0 and an ethylene-vinyl acetate-carbon monoxide ... | 08/18/1998 |
| 5763820 | Wrapped gas generant cartridge A wrapped gas generant cartridge is incorporated in an inflator of a vehicle occupant restraint system. The gas generant cartridge includes a stacked, aligned plurality of substantially flat annular wafers of gas generant material having a central opening... | 06/09/1998 |
| 5708231 | Delayed release cartridge for a firearm A cartridge is disclosed for use in a ballistic weapon system. The cartridge includes a tubular case and a ballistic projectile. The projectile has an annular groove which extends into an exterior periphery of the projectile. The tubular case has a cylind... | 01/13/1998 |
| 5549048 | Biodegradable shot-gun cartridge case A shot-gun cartridge case is disclosed which is made by extrusion or equivalent pressure forming of high density polyolefin-based composition containing biodegradable starch, a fatty acid ester to initiate peroxide attack on the double bonds of the polyol... | 08/27/1996 |
| 5492065 | Plastic cartridge for a firing device, particularly a bolt gun A plastics cartridge has a cartridge body provided with a flange which has a plastic casing body, open on one side, is for accommodating a propellent charge and an ignition charge for igniting the propellant charge and has a plastics cover for closing the... | 02/20/1996 |
| 5323707 | Consumable low energy layered propellant casing A multi-layered cylindrical propellant casing comprising an inner propellant-holding layer of polymer layer(s) obtained by lay up, blow molding, or similar fabrication of an energetic or nonenergetic type layer, coated with (an) intermediate adhesive laye... | 06/28/1994 |
| 5279201 | Plastic cartridge and plastic cartridge-belt magazine A cartridge is made up of a synthetic resin case member and a synthetic resin lid. The case member contains a first receiving chamber for receiving an igniter charge and a second receiving chamber for the accommodation of a propellant charge. A synthetic ... | 01/18/1994 |
| 5272982 | Device for maintaining a projectile relative to the casing of a telescoping ammunition A telescoped ammunition cartridge, including a cylindrical cartridge casing having one end closed by a base, a full caliber projectile disposed within the casing, wherein the projectile has a cylindrical aft section and a tapered fore-section, at least on... | 12/28/1993 |
| 5265540 | Ammunition, in particular of the telescoped type A telescoped ammunition round including a plastic case having a cylindrical casing, a front end cap and a rear end cap, the front and rear end caps being fitted at front and rear ends of the casing. The round further includes a projectile, a propulsive ch... | 11/30/1993 |
| 5233928 | Telescoped ammunition round The invention relates to a telescoped ammunition round, comprising a case (2) made from plastic material made up of a cylindrical casing (3a, 3b) and two end caps (4a, 4b) disposed at opposite ends of the casing (3a, 3b). The case (2) is advantageously fo... | 08/10/1993 |
| 5216200 | Device for igniting a propellant charge, a cartridge for the charge and a magazine for holding cartridges, especially for stud setting or driving tools A device for igniting a propellant charge is provided with a housing defining a cavity wherein a piston is displaceably guided. The cavity is connected via a bore acting as a nozzle to a chamber wherein a case member of a cartridge is arranged for accommo... | 06/01/1993 |
| 5165040 | Pre-stressed cartridge case A pre-stressed cartridge of the invention generally comprises a cylindrical liner wrapped with a plurality of layers of wound fibers or high tensile wires. These high tension wrapped windings put the walls of the cartridge liner into compression, thus pre... | 11/17/1992 |
| 5121693 | Hermetically sealed shot shell having an increased volume and a method for making same An increased volume shotshell having a biaxially oriented plastic tubular body has an end closure disk heat sealed to the open end of the shotshell eliminating the conventional star crimp closure. The increases volume results from making available the spa... | 06/16/1992 |
| 5021206 | Method of molding a dual plastic shotshell casing A dual plastic compression formed shotshell casing includes an injection-molded annular-shaped hard plastic rim and an elongated compression-formed tubular body having an integral basewad portion at its base end which is mechanically interlocked with the ... | 06/04/1991 |
| 4991512 | Moisture seal shotshells A moisture seal is designed for a shotshell having a biaxially oriented plastic tubular body. The seal is a composite of a thermally conductive layer and a thermoplastic such as high density polyethylene laminated together. The rim portion of the inner la... | 02/12/1991 |
