Patents Examined by Aileen Felton
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Patent number: 6928764Abstract: The present invention provides a grip extender for a handgun. The grip extender provides a relatively continuous surface between the handgun and locked magazine to afford the handgun user with a comfortable grip. The grip extender can be adapted to fit a variety of handguns and magazines.Type: GrantFiled: March 8, 2003Date of Patent: August 16, 2005Assignee: Freed Designs Inc.Inventor: Robert Freed
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Patent number: 6929707Abstract: A stabilized water-in-oil energetic emulsion composition comprising a) an aqueous oxidizer phase comprising at least one oxygen supplying component; b) an organic phase comprising at least one organic fuel; c) an emulsifying amount of at least one emulsifying agent suitable for forming a water-in-oil emulsion; and d) an emulsion stabilizer comprising a hydrocarbon polymer, said hydrocarbon polymer having {overscore (M)}n ranging from about 2,000 to about 6,000, provided that said emulsion composition is essentially free of any polyvalent inorganic agent that is capable of cross-linking with the emulsifying agent or the emulsion stabilizer.Type: GrantFiled: November 1, 2001Date of Patent: August 16, 2005Assignee: The Lubrizol CorporationInventors: John J. Mullay, Robert A. Pollack
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Patent number: 6918976Abstract: A gas generating composition which contains a nitrogenous organic compound as a fuel component and generates, at a high gasification rate, a clean gas harmless to the human body. The composition of the present invention comprises a nitrogenous organic compound as a fuel component and ammonium perchlorate and the nitrate of an alkaline metal or alkaline earth metal as oxidizing agents, wherein where a quantity of nitrate required solely for forming an oxide of alkaline metal or alkaline earth metal that can stoichiometrically neutralize hydrogen chloride generated from ammonium perchlorate is taken as 1, a quantity of nitrate of said alkaline metal or alkaline earth metal exceeds 0.9.Type: GrantFiled: October 7, 2003Date of Patent: July 19, 2005Assignee: Nippon Kayaku Kabushiki-KaishaInventors: Eishi Sato, Dairi Kubo, Kenjiro Ikeda
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Patent number: 6916390Abstract: In the military field of explosive munitions, a semi-continuous process produces a composite explosive charge composing a charged solid polyurethane matrix, the charge of which is pulverulent and comprise at least one nitro-organic explosive, by introduction into a mould of a pastry explosive composition and then thermal crosslinking of this composition. The composition is obtained by mixing constituents essentially comprising a polyol prepolymer, a plasticizer, a polyisocyanate monomer and a pulverulent solid charge comprising at least one nitro-organic explosive. This simple and economic process makes it possible to dispense, without disadvantage, with the pot life/curing time of the composition compromise.Type: GrantFiled: January 14, 2003Date of Patent: July 12, 2005Assignee: Eurenco FranceInventors: Jean-Paul Augier, Bernard Mahe, Alain Bonnel
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Patent number: 6916389Abstract: A process for producing a mixture of particulates using compressed gas and sonication. The process is particularly useful to mix reactive particulates, such as thermites.Type: GrantFiled: August 13, 2002Date of Patent: July 12, 2005Assignee: Nanotechnologies, Inc.Inventors: David Richard Pesiri, Robert C. Dye
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Patent number: 6916388Abstract: The present invention is directed to a solid propellant for rocket motors, gas generators and comparable devices, comprising a cured composition of hydrazinium nitroformate and an unsaturated hydroxyl terminated hydrocarbon compound.Type: GrantFiled: May 19, 1999Date of Patent: July 12, 2005Assignee: Nederlandse Organisatie voor toegepast-natuurwetenschappelijk Onderzoek TNOInventors: Jeroen Louwers, Antonius Eduard Dominicus Maria Van Der Heijden, Petrus Johannes Maria Elands
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Patent number: 6913661Abstract: The present invention is directed to an age-stabilized and/or strengthened ammonium nitrate propellant composition wherein the strengthening agent is selected from the group consisting of azodicarbonamide, dicyandiamide, oxamide and mixtures thereof and wherein the age-stabilizing agent is a molecular sieve having a pore size of 13 angstroms or less.Type: GrantFiled: February 17, 2004Date of Patent: July 5, 2005Assignee: Universal Propulsion Company, Inc.Inventors: Wayne C. Fleming, Hugh J. McSpadden, Donald E. Olander
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Patent number: 6913660Abstract: The invention relates to explosive compositions comprising, in a water-in-oil emulsion as emulsifier, a Mannich adduct composed of a) a hydrocarbyl-substituted, hydroxyaromatic compound of the formula I (R1)nAr(OH)x ??(I) in which R1 is a hydrocarbyl group selected from a straight-chain or branched C6-C400-alkyl, C6-C400-alkenyl, C6-C400-alkenyl-aryl or C6-C400-alkyl-aryl radical; Ar is a mononuclear or polynuclear, optionally substituted aromatic ring; n is an integral value of 1, 2 or 3; and x is an integral value of 1 and 5; b) formaldehyde, an oligomer or polymer thereof; and c) a nitrogen compound selected from an amine having at least one primary or secondary amino function, and ammonia.Type: GrantFiled: July 5, 2001Date of Patent: July 5, 2005Assignee: BASF AktiengesellschaftInventors: Arend Jouke Kingma, Arno Lange, Hans Peter Rath
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Patent number: 6910420Abstract: An apparatus and method of using electrically initiated primer systems that rely on vaporizing a thin metallic film which is either coated on a non-conductive insulator component or is a malleable thin film or strip secured to the inner surface of a primer cup assembly to ignite an environmentally safe MIC composition.Type: GrantFiled: March 4, 2003Date of Patent: June 28, 2005Assignee: The United States of America as represented by the Secretary of the NavyInventors: Don Thompson, George N. Hennings
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Patent number: 6905562Abstract: A low density slurry bridge mix for use in an inflatable restraint system is provided. The low density slurry bridge mix includes zirconium metal, a thermal conductivity enhancer such as aluminum metal, potassium perchlorate oxidant, and a binder material and has a dry density of about 45 to about 65 percent of theoretical density. The low density slurry bridge mix may be used in an initiator including an unground header attached to a raised bridgewire wherein the low density slurry bridge mix surrounds and adheres to the bridgewire.Type: GrantFiled: September 4, 2003Date of Patent: June 14, 2005Assignee: Autoliv ASP, Inc.Inventor: Brian K. Hamilton
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Patent number: 6905561Abstract: A solid rocket propellant includes a hydroxy-terminated caprolactone ether binder and an oxidizer. The propellant may be disposed of by contacting it with an aqueous solution of 12 N NaOH or 6 N HCl at a temperature of about 140° F. for about 24 hours to decompose the binder. Solids remaining in the solution after the binder decomposes are removed.Type: GrantFiled: December 6, 2000Date of Patent: June 14, 2005Assignee: United Technologies CorporationInventors: Marvin Luther Jones, Donald Dongjaw Tzeng
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Patent number: 6896751Abstract: A propellant composition including a fuel, an oxidizer, and a latex binder and method of making, wherein the method of making eliminates the need for the large amounts of volatile, flammable solvents that are typically associated with the traditional process.Type: GrantFiled: May 16, 2003Date of Patent: May 24, 2005Assignee: Universal Propulsion Company, Inc.Inventors: Philip L. Posson, Mark Clark, Jim Cornwell
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Patent number: 6893518Abstract: Sol-gel chemistry is used for the preparation of energetic materials (explosives, propellants and pyrotechnics) with improved homogeneity, and/or which can be cast to near-net shape, and/or made into precision molding powders. The sol-gel method is a synthetic chemical process where reactive monomers are mixed into a solution, polymerization occurs leading to a highly cross-linked three dimensional solid network resulting in a gel. The energetic materials can be incorporated during the formation of the solution or during the gel stage of the process. The composition, pore, and primary particle sizes, gel time, surface areas, and density may be tailored and controlled by the solution chemistry. The gel is then dried using supercritical extraction to produce a highly porous low density aerogel or by controlled slow evaporation to produce a xerogel. Applying stress during the extraction phase can result in high density materials.Type: GrantFiled: October 29, 2003Date of Patent: May 17, 2005Assignee: The Regents of the University of CaliforniaInventors: Randall L. Simpson, Ronald S. Lee, Thomas M. Tillotson, Lawrence W. Hrubesh, Rosalind W. Swansiger, Glenn A. Fox
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Patent number: 6893517Abstract: A nitrocellulose-free, gas-generating composition for use in vehicle occupant restraint systems, in particular in a belt tensioner gas generator, substantially consists of at least one nitrogen-containing organic fuel in a proportion of 55 to 70% by weight, an inorganic oxidator in a proportion of 30 to 45% by weight, at least one combustion moderator in a proportion of up to 10% by weight and up to 5% by weight conventional adjuvants and additives, each in relation to the overall weight of the composition. The composition has a pressure exponent of less than 0.35 and a combustion rate at 200 bar of at least 40 mm/s.Type: GrantFiled: July 9, 2002Date of Patent: May 17, 2005Assignee: TRW Airbag Systems GmbH & Co. KGInventors: Siegfried Zeuner, Roland Schropp, Achim Hofmann, Karl-Heinz Rödig
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Patent number: 6887325Abstract: A non azide gas generant composition of nitroguanidine and an oxidizer such as phase stabilized ammonium nitrate is provided. A gas generant having nitroguanidine and phase stabilized ammonium nitrate has many desirable characteristics such as little production of ash and the production of essentially toxic free exhaust gas. When nitroguanidine is compressed into a pellet it has needle shaped crystals that bend or distort. When the gas generant pellets are subjected to thermal cycling some nitroguanidine crystals will return to their native conformation resulting in pellet growth. To eliminate this pellet growth, nitroguanidine is passed through a vibrating ball mill. The media in the vibrating ball mill pulverizes the nitroguanidine into an amorphous crumb.Type: GrantFiled: January 22, 2003Date of Patent: May 3, 2005Assignee: Key Safety Systems, Inc.Inventors: J B Canterberry, Mark A. Schmidt, Edward O. Hosey, Robert K. Walsh, John H. Adams
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Patent number: 6887326Abstract: High nitrogen nonazide gas compositions, useful in inflating passenger restraint gas inflator bags, contain a high energy substituted tetrazole or bitetrazole that forms a naturally occurring hydrate and phase stabilized ammonium nitrate (PSAN) as a primary oxidizer. The combination results in gas generants that are relatively more stable and less explosive, have improved ignitability and burn rates, and generate more gas and less solids at lower operating pressures than known gas generant compositions.Type: GrantFiled: April 4, 2003Date of Patent: May 3, 2005Assignee: Automotive Systems Laboratory, Inc.Inventors: Graylon K. Williams, Sean P. Burns, Jeffrey W. Halpin, Paresh S. Khandhadia
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Patent number: 6887324Abstract: A composition C4 substitute is provided, the substitute including 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazatetracyclo[5.5.0.05,903,11]-dodecane (CL-20), optionally one or more nitramines other than CL-20, and silicone fluid. Also provided is an additive composition including CL-20 and bis(dinitropropyl)acetal and bis(dinitropropyl)formal (BDNPA/F). The additive composition is preferably combined with composition C-4.Type: GrantFiled: February 5, 2002Date of Patent: May 3, 2005Assignee: Alliant Techsystems Inc.Inventor: Kenneth E. Lee
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Patent number: 6884307Abstract: Insensitive explosive molding powders are provided that include an explosive component, a binder and a plasticizer. The insensitive molding powders include explosive crystals that are bound by a binder system. Moreover, the insensitive high explosive molding powder of the present invention has a bi-/tri-/tetramodal grain composition comprising coarse grain (280-360 ?m with an upper limit of 500-700 ?m) and fine grain (e.g., 35-45 ?m) explosive crystals that a bonded by a binder system comprising a plasticizer and a binder. The molding powder of the present invention is coated in waterless solvent process having a solvent content of less than 0.01 wt. % and is immediately ready for pellet pressing.Type: GrantFiled: September 26, 2003Date of Patent: April 26, 2005Assignee: Diehl Munitionssysteme GmbH & Co. KGInventors: Heinz Hofmann, Karl Rudolf
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Patent number: 6880326Abstract: This invention comprises a new process for developing high regression rate propellants for application to hybrid rockets and solid fuel ramjets. The process involves the use of a criterion to identify propellants which form an unstable liquid layer on the melting surface of the propellant. Entrainment of droplets from the unstable liquid-gas interface can substantially increase propellant mass transfer leading to much higher surface regression rates over those that can be achieved with conventional hybrid propellants. The main reason is that entrainment is not limited by heat transfer to the propellant from the combustion zone. The process has been used to identify a new class of non-cryogenic hybrid fuels whose regression rate characteristics can be tailored for a given mission. The fuel can be used as the basis for a simpler hybrid rocket design with reduced cost, reduced complexity and increased performance.Type: GrantFiled: February 17, 2000Date of Patent: April 19, 2005Assignee: The Board of Trustees of the Leland Stanford Junior UniversityInventors: M. Arif Karabeyoglu, David Altman, Brian J. Cantwell
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Patent number: 6881284Abstract: A cartridge primer which utilizes an explosive that can be designed to become inactive in a predetermined period of time: a limited-life primer. The explosive or combustible material of the primer is an inorganic reactive multilayer (RML). The reaction products of the RML are sub-micron grains of non-corrosive inorganic compounds that would have no harmful effects on firearms or cartridge cases. Unlike use of primers containing lead components, primers utilizing RML's would not present a hazard to the environment. The sensitivity of an RML is determined by the physical structure and the stored interfacial energy. The sensitivity lowers with time due to a decrease in interfacial energy resulting from interdiffusion of the elemental layers. Time-dependent interdiffusion is predictable, thereby enabling the functional lifetime of an RML primer to be predetermined by the initial thickness and materials selection of the reacting layers.Type: GrantFiled: October 19, 2001Date of Patent: April 19, 2005Assignee: The Regents of the University of CaliforniaInventors: Daniel M. Makowiecki, Robert S. Rosen