Containing Inorganic Nitrogen-oxygen Salt Patents (Class 149/45)
  • Patent number: 10214460
    Abstract: An improved ignition and/or booster composition contains a boron-containing constituent such as boron carbide or a metal boride, and, an oxidizer such as potassium perchlorate. A gas generator and a vehicle occupant protection system containing the composition are also included.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: February 26, 2019
    Assignee: Joyson Safety Systems Acquisition LLC
    Inventor: Scott M. Rambow
  • Patent number: 10040730
    Abstract: A monopropellant includes 30-70% by weight of an oxidizer including hydroxylammonium nitrate, 5-50% by weight of a fuel, and a burn rate modifier in a non-zero amount of up to 3% by weight. The burn rate modifier can be selected from vanadium salts, iron salts, and combinations thereof. The monopropellant is a stable liquid between ?20 C and 100 C at ambient pressure.
    Type: Grant
    Filed: February 9, 2015
    Date of Patent: August 7, 2018
    Assignee: AEROJET ROCKETDYNE, INC.
    Inventor: Edward J. Wucherer
  • Patent number: 9670107
    Abstract: The present invention provides a modular installation (1) for carrying out a method of manufacturing an explosive emulsion precursor comprising at least three containers: —a first container (100) for preparing an aqueous phase, including a dissolution first tank (110); and —at least one second and/or third container (200, 300) including a second tank for preparing oily phase (210) and a third tank for preparing emulsion (310); and —at least one fourth and/or fifth container (400, 500) including means (410) for feeding heat and means (510) for feeding electrical energy; and —said first, second and/or third containers (100, 200, 300) being juxtaposed over at least a portion of one of their walls (100a, 300b, 200b) and being provided with openings (170, 370a, 275, 375, 270b) in their walls.
    Type: Grant
    Filed: January 9, 2014
    Date of Patent: June 6, 2017
    Assignee: NITRATES & INNOVATION
    Inventors: James C. Eaton, Gilles Jauffret
  • Patent number: 9458065
    Abstract: Provided is a gas generating composition with a low combustion temperature, good ignition ability, and a high heat resistance. The gas generating composition includes: (a) a fuel; (b) an oxidizing agent including a basic metal nitrate; (c) a basic metal carbonate; and (d) a binder. The fuel of the component (a) includes melamine cyanurate (MC) and nitroguanidine (NQ), with a ratio (MC/NQ) of contents of MC and NQ being within a range of 0.3 to 1.5. The binder of the component (d) is one or two or more selected from: (d-1) starch, etherified starch, methyl cellulose, hydroxyethyl methyl cellulose, hydroxypropyl methyl cellulose, and hydroxyethyl cellulose; (d-2) poly(vinyl alcohol), polyvinyl ether, polyethylene oxide, polyvinyl pyrrolidone, and polyacrylamide; (d-3) guar gum, etherified guar gum, and tamarind gum.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: October 4, 2016
    Assignee: DAICEL CORPORATION
    Inventors: Syouji Kobayashi, Jianzhou Wu
  • Publication number: 20150144236
    Abstract: The present invention provides a modular installation (1) for carrying out a method of manufacturing an explosive emulsion precursor comprising at least three containers: —a first container (100) for preparing an aqueous phase, including a dissolution first tank (110); and —at least one second and/or third container (200, 300) including a second tank for preparing oily phase (210) and a third tank for preparing emulsion (310); and —at least one fourth and/or fifth container (400, 500) including means (410) for feeding heat and means (510) for feeding electrical energy; and —said first, second and/or third containers (100, 200, 300) being juxtaposed over at least a portion of one of their walls (100a, 300b, 200b) and being provided with openings (170, 370a, 275, 375, 270b) in their walls.
    Type: Application
    Filed: January 9, 2014
    Publication date: May 28, 2015
    Inventors: James C. Eaton, Gilles Jauffret
  • Patent number: 8992707
    Abstract: An energetic composition with controlled detonation having at least a first organic material and a second material, where the second material is a porous material (micro-, meso-, or macroporous), having a pore ratio of at least 10% and preferably greater than 50%, and the first material is, at least partially, infiltrated into the pores of the second material. A mixture containing such a composition, and a method for manufacturing such a composition and such a mixture. Additionally, a method for fragmenting or expanding a microporous material at nanoscale.
    Type: Grant
    Filed: October 6, 2008
    Date of Patent: March 31, 2015
    Assignee: Institute Franco-Allemand de Recherches de Saint-Louis
    Inventors: Marc Comet, Denis Spitzer, Vincent Pichot
  • Publication number: 20150013859
    Abstract: The present application discloses a variety of improvements that enhance at least one of the mechanical, chemical/energetic, ballistic, or adhesive properties, of a class of ECPs, regardless of whether said ECPs are in solid phase or gels, singly or in combinations thereof.
    Type: Application
    Filed: August 27, 2013
    Publication date: January 15, 2015
    Applicant: Digital Solid State Propulsion, LLC
    Inventor: Michael D. McPherson
  • Publication number: 20140367003
    Abstract: The invention relates to a method of producing a range of particulate energetic materials with tailored particle sizes and extremely narrow particle size distributions. The use of membrane emulsification apparatus provides a means of formulating explosives with a selectable particle size, without the use of milling techniques to physically reduce the size of the particulates.
    Type: Application
    Filed: December 7, 2012
    Publication date: December 18, 2014
    Inventor: Matthew James Ian Williamson
  • Patent number: 8888935
    Abstract: A composition capable of producing either solid propellant grains, liquid or gel monopropellants, all of which are electrically ignitable and capable of sustained controllable combustion at ambient pressure. Additional compositions capable of sustained controllable combustion at elevated pressures are described. Applications for the compositions disclosed herein are provided, and include among other applications use in small micro thrusters, large core-burning solid propellant gains, shaped explosives charges for military application, and pumpable liquids and gel monopropellants or explosives for military, commercial mining or gas and oil recovery. In alternative embodiments the above compositions may also incorporate an energetic nitrate polymer, bum rate modifiers, and/or metal fuel(s). The HIPEP formulation makes it possible to ignite and sustain combustion at ambient and vacuum conditions (a) without continuous electrical power and (b) while providing faster bum rates.
    Type: Grant
    Filed: May 15, 2009
    Date of Patent: November 18, 2014
    Assignee: Digital Solid State Propulsion, LLC
    Inventors: Charles E. Grix, Wayne N. Sawka
  • Publication number: 20140261929
    Abstract: Cool burning gas generating compositions having minimal performance variation at temperature and pressure extremes are provided. The gas generants include a primary fuel comprising a metal salt of a dicarboxylic acid (e.g., copper adipate), a secondary fuel (e.g., guanidine nitrate), at least one oxidizer (e.g., basic copper nitrate), and a burn rate modifier (e.g., zinc oxide). Such a cool burning gas generant composition has a maximum flame temperature at combustion (Tc) of ?1700K and a linear burn rate pressure exponent of ?0.3, along with superior combustion stability and desirably high gas output. Moreover, such a cool burning gas generant enables improved, lighter and more efficient inflator assemblies requiring fewer inflator components.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Applicant: AUTOLIV ASP, INC.
    Inventor: Ivan V. Mendenhall
  • Patent number: 8808476
    Abstract: Compositions and methods relate to gas generants used in inflatable restraint systems. The gas generant grains include a fuel mixture having at least one fuel and at least one oxidizer, which have a burn rate that is susceptible to pressure sensitivity during combustion. The gas generant composition further includes a plurality of pressure sensitivity modifying glass fiber particles distributed therein to lessen the pressure sensitivity and/or to increase combustion stability of the gas generant. Such gas generants can be formed via spray drying techniques.
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: August 19, 2014
    Assignee: Autoliv Asp, Inc.
    Inventors: Ivan V. Mendenhall, Gary K. Lund
  • Patent number: 8728259
    Abstract: An inflator 10 is provided whereby the interstitial cavities found within the inflator 10 are packed with one or more decomposition additives 26 that decompose in the presence of heat. As such, the decomposition additives 26 fluidly and/or conductively communicate with the hot gases generated upon activation of the inflator 10. As the decomposition additive 26 decomposes, heat may be mitigated while resultant gaseous decomposition products are liberated.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: May 20, 2014
    Assignee: TK Holdings Inc.
    Inventors: Deborah L. Hordos, Slaven Domazet, Brian A. Mayville
  • Publication number: 20140109788
    Abstract: A liquid electrically initiated and controlled composition comprising an oxidizer, soluble fuel additive(s), and other optional additives to enhance the chemical or ballistic properties, or a combination thereof is disclosed. The liquid composition further comprises stabilizers to enhance thermal stability, sequestrants to minimize deleterious effects of transition metal contaminants, and combustion enhancers maximizing efficiency. Buffers and heavy metal sequestering or complexing agents may be used in combination to achieve the highest degree of thermal stability. Additional ionic co-oxidizers may be added to the liquid composition to stabilize the liquid oxidizer and further depress freezing point. The liquid phase of matter allows flow via pipes or tubes from tanks, reservoirs, or other containers, through metering valves, followed by ignition or combustion modulation when stimulated by electrodes, statically or dynamically.
    Type: Application
    Filed: September 27, 2013
    Publication date: April 24, 2014
    Applicant: Digital Solid State Propulsion, LLC
    Inventors: Michael D. McPherson, Tim Manship
  • Patent number: 8696837
    Abstract: The present invention is directed to an explosive composition comprised of heavy ANFO and expanded polymeric beads that have a density that is less than the density of the heavy ANFO. The expanded polymeric beads have a size that is determined or based on the size of ammonium nitrate prills used in the heavy ANFO portion of the composition. In one embodiment, the expanded polymeric beads that are utilized in the composition are at least 70% of the lower limit of the mesh size of the predominant ammonium nitrate prill mesh size. In another embodiment, the expanded polymeric beads are at least 70% of the a size that is related to the average mesh size of the ammonium nitrate prills.
    Type: Grant
    Filed: October 10, 2010
    Date of Patent: April 15, 2014
    Inventor: Kevin H. Waldock
  • Patent number: 8657974
    Abstract: A gas generator 10 includes an auto-ignition/booster composition 212 that contains a metal chlorate such as potassium chlorate as an oxidizer, a carboxylic acid such as DL-tartaric acid as a primary fuel, a secondary oxidizer such as strontium nitrate, and if desired, a secondary fuel such as 5-aminotetrazole. The auto-ignition/booster composition 212 and a separate provision of ammonium nitrate or phase stabilized ammonium nitrate 228 are provided within a single combustion/decomposition chamber 222 for the production of gas, upon actuation of the gas generator 10. Vehicle occupant protection systems 180, containing the gas generator 10, are also provided.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: February 25, 2014
    Assignee: TK Holdings, Inc.
    Inventors: Brian A. Mayville, Deborah L. Hordos, Graylon K. Williams
  • Patent number: 8652346
    Abstract: A fire-extinguishing aerosol composition for common electric apparatuses is disclosed, which includes oxidant, combustible, adhesive and additive. The composition of the present invention is characterized in that the oxidant is the mixture of the potassium salt and the strontium salt, in which the content of the potassium salt oxidant is more than or equal to 15 mass % to less than 20 mass % of the total mass of the composition, and the content of the strontium salt oxidant is more than 48 mass % to less than or equal to 52 mass % of the total mass of the composition. In the fire-extinguishing aerosol composition of the present invention, the mean particle diameter of all components is less than or equal to 50 ?m. After quenching the fire in a space with the heavy current electric apparatus, the fire-extinguishing aerosol composition of the present invention can ensure that the insulation resistance of the common electric apparatus is ranged from 20M? to 100M?.
    Type: Grant
    Filed: November 14, 2007
    Date of Patent: February 18, 2014
    Assignee: Shaanxi J&R Fire Fighting Co., Ltd
    Inventors: Hongbao Guo, Zanfeng Zhang
  • Patent number: 8617327
    Abstract: The present invention is an electrically controlled propellant comprising a binder, an oxidizer, and a cross-linking agent. The boric acid (the cross-linking agent) has been found to function as a cross-linking agent for the high molecular binder used to make the propellant, thereby improving the composition's ability to withstand combustion without melting. The present invention also may include 5-aminotetrazole (5-ATZ) as a stability-enhancing additive. The binder of the present invention may include polyvinylalcohol (PVA) and/or the co-polymer of polyvinylalcohol/polyvinylamine nitrate (PVA/PVAN).
    Type: Grant
    Filed: October 23, 2012
    Date of Patent: December 31, 2013
    Assignee: Digital Solid State Propulsion LLC
    Inventors: Arthur Katzakian, Charles Grix
  • Patent number: 8608879
    Abstract: The present invention is a flare illuminant composition, useful in hand-held signals, which composition is environmentally friendly and economical, containing a commercially available, aromatic, high energy, amine-based organic compound, 5-aminotetrazole, in place of the conventional and toxic KClO4, or, for the known alternative to KClO4, expensive, strontium bis-(1-methyl-5-nitriminotetrazolate)monohydrate.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: December 17, 2013
    Assignee: The United States of America as Represented by the Secretary of the Army
    Inventors: Jesse J. Sabatini, Gary Chen, Amita Nagori, Reddy Damavarapu
  • Publication number: 20130327455
    Abstract: The present invention is an electrically controlled propellant comprising a binder, an oxidizer, and a cross-linking agent. The boric acid (the cross-linking agent) has been found to function as a cross-linking agent for the high molecular binder used to make the propellant, thereby improving the composition's ability to withstand combustion without melting. The present invention also may include 5-aminotetrazole (5-ATZ) as a stability-enhancing additive. The binder of the present invention may include polyvinylalcohol (PVA) and/or the co-polymer of polyvinylalcohol/polyvinylamine nitrate (PVA/PVAN).
    Type: Application
    Filed: October 23, 2012
    Publication date: December 12, 2013
    Applicant: Digital Solid State Propulsion
    Inventor: Digital Solid State Propulsion
  • Patent number: 8562768
    Abstract: The main subject of the present invention are solid compounds capable of generating hydrogen by a self-sustaining combustion reaction. Their composition comprises borazane and/or polyaminoborane and at least one inorganic oxidant, advantageously chosen from ammonium nitrate, alkali metal nitrates, alkaline-earth metal nitrates, metal nitrates, metal oxides, oxidants of the family of dinitramines and mixtures thereof. It also relates to the generation of hydrogen by self-sustaining combustion of at least one such compound.
    Type: Grant
    Filed: April 16, 2009
    Date of Patent: October 22, 2013
    Assignee: Herakles
    Inventors: Pierre Yvart, Joel Renouard, Helene Blanchard, Hugues Rocton
  • Publication number: 20130248062
    Abstract: The present invention provides a gas generating composition, especially for use in safety devices for vehicles, comprising a) 40 to 60% by weight of a fuel consisting of one or more components selected from the group of guanidine compounds; b) 40 to 60% by weight of basic copper nitrate; c) 0 to 8% by weight of at least one transition metal oxide; d) 1 to 5% by weight of at least one stabilizer component and e) 0 to 5% by weight of further additives, each related to the total weight of the components a) through e); the stabilizer component at room temperature having a solubility in water of not more than 1 g/100 ml and the solubility in water at T=90° C. amounting to at least seven times the solubility at room temperature.
    Type: Application
    Filed: February 22, 2013
    Publication date: September 26, 2013
    Applicant: TRW Airbag Systems GmbH
    Inventors: Jorg Friedrich, Karl-Heinz Rodig, Siegfried Zeuner
  • Publication number: 20130228254
    Abstract: The main subject of the present invention is a solid pyrotechnic gas generator compound, the composition of which contains, expressed in weight percentages: from 60 to 70% of guanidine nitrate, from 26 to 33%, advantageously 26 to 30%, of potassium perchlorate, from 2.5 to 6% of at least one combustion modifier chosen from transition metal oxides, the precursors of such oxides and mixtures thereof, from 0 to 6% of at least one additive, and does not contain an explosive ingredient. Such a compound is particularly effective for the inflation of side airbags.
    Type: Application
    Filed: September 15, 2011
    Publication date: September 5, 2013
    Applicant: HERAKLES
    Inventors: Frederic Marlin, Stephane Besombes
  • Patent number: 8506734
    Abstract: A process for making metal-organic frameworks and metal-organic frameworks having host-guest complexes of either liquid energetics, solid energetics, or solid oxidizers.
    Type: Grant
    Filed: July 14, 2010
    Date of Patent: August 13, 2013
    Assignee: The United States of America as Represented by the Secretary of the Navy
    Inventors: Andrew P. Nelson, Nirupam J. Trivedi
  • Patent number: 8496766
    Abstract: Gas generating compositions include a primary fuel selected from aminotetrazoles and heterocyclic amines; a carbonyl donor selected from formaldehyde, formamide, or an ammonium formate; and a basic constituent selected from alkali and alkaline earth metal aminotetrazoles, hydantoin and basic derivatives thereof, and mixtures thereof. Gas generators and vehicle occupant protection systems incorporating the present compositions are also described.
    Type: Grant
    Filed: September 25, 2012
    Date of Patent: July 30, 2013
    Assignee: TK Holdings, Inc.
    Inventor: Deborah L. Hordos
  • Patent number: 8486207
    Abstract: The present invention provides a chlorine-containing pyrotechnic composition which is substantially free of per-chlorate which composition comprises a nitrocellulose which is derived from a fibrous nitrocellulose starting material that has at least partially been dissolved during the process of preparing the pyrotechnic composition, and a colorant. The invention further provides a firework article comprising said pyrotechnic composition, and a method for preparing the same.
    Type: Grant
    Filed: October 9, 2009
    Date of Patent: July 16, 2013
    Assignee: Clearspark, LLC
    Inventors: Rutger Webb, Martijn Zebregs, John Franciscus Zevenbergen, Murk Pieter Van Rooijen
  • Patent number: 8425701
    Abstract: An explosive composition is provided comprising an explosive agent, a solid fuel and a polymeric adherent wherein the explosive agent, solid fuel and polymeric adherent are dispersed throughout the composition.
    Type: Grant
    Filed: April 28, 2009
    Date of Patent: April 23, 2013
    Assignee: Blew Chip Holdings Pty Ltd.
    Inventors: Alan Twomey, Michael Twomey
  • Patent number: 8372223
    Abstract: A novel auto-ignition/gas generating composition contains a primary fuel selected from salts of azoles, alkyl tetrazoles, and mixtures thereof; a secondary fuel selected from salts of organic acids; and a primary oxidizer selected from metal nitrates. A tertiary fuel may also be provided and is selected from organic acids. Gas generators and gas generating systems incorporating the novel compositions are also contemplated.
    Type: Grant
    Filed: June 18, 2009
    Date of Patent: February 12, 2013
    Assignee: TK Holdings, Inc.
    Inventor: Deborah L. Hordos
  • Patent number: 8353994
    Abstract: The propulsion system for the acceleration of projectiles is based on nitrocellulose and contains a crystalline energy carrier on a nitramine base and an inert plasticizing additive. The nitramine compound contains a structural element of the general chemical structure formula R—N—NO2, where R is a residual. The nitramine compound is present in a concentration in the range from 1 to 35% by weight, in particular in the range from 5 to 25% by weight. The nitramine compound is preferably RDX. The inert plasticizing additive is a water-insoluble polyoxo compound, if necessary in combination with a substance containing carboxyl groups. In layers near the surface an increased concentration can be present. The inert plasticizing additive is present in a concentration of 1 to 5% by weight.
    Type: Grant
    Filed: May 17, 2007
    Date of Patent: January 15, 2013
    Assignee: Nitrochemie Wimmis AG
    Inventors: Ulrich Schaedeli, Hanspeter Andres, Kurt Ryf, Dominik Antenen, Beat Vogelsanger
  • Patent number: 8317952
    Abstract: The present invention is an electrically controlled propellant comprising a binder, an oxidizer, and a cross-linking agent. The boric acid (the cross-linking agent) has been found to function as a cross-linking agent for the high molecular binder used to make the propellant, thereby improving the composition's ability to withstand combustion without melting. The present invention also may include 5-aminotetrazole (5-ATZ) as a stability-enhancing additive. The binder of the present invention may include polyvinylalcohol (PVA) and/or the co-polymer of polyvinylalcohol/polyvinylamine nitrate (PVA/PVAN).
    Type: Grant
    Filed: April 13, 2007
    Date of Patent: November 27, 2012
    Assignee: Digital Solid State Propulsion, LLC
    Inventors: Arthur Katzakian, Charles Grix
  • Patent number: 8317953
    Abstract: A new process for forming MICs as well as three exemplary categories of MIC formulations is disclosed. MICs disclosed herein include a first exemplary category for which combustion can be initiated and sustained by either a heat (flame) source or electrical power, a second exemplary category of formulations that can be ignited and that sustain combustion at low pressures only with electrical power and a third exemplary category of formulations that can be ignited and extinguished at low pressures only with electrical power. The new process of MIC formulation provides energetic liquid oxidizers in place of traditional solvents, thus eliminating the need for solvent extraction. The energetic liquid oxidizer serves as a medium in which to suspend and grow the 3D nanostructure formed by the cross linked polymer (PVA). As a consequence, the 3D nanostructure entraps the liquid oxidizer, preventing it from evaporating and thereby eliminating the need for solvent extraction, preserves the 3D nanostructure shape.
    Type: Grant
    Filed: May 15, 2009
    Date of Patent: November 27, 2012
    Assignee: Digital Solid State Propulsion, LLC
    Inventors: Wayne N. Sawka, Charles E. Grix
  • Patent number: 8273199
    Abstract: The present invention generally relates to auto-ignition/booster compositions for inflators of occupant restraint systems, for example. An auto-ignition/booster and/or gas generant composition in accordance with the present invention includes an aromatic acid selected from tetrazoles, carboxylic acid/benzene-based fuels, nitrotriazoles, aminonitrotriazoles, aminotriazoles, bistetrazolylamines, bitetrazoles, and mixtures thereof; an alkali metal nitrate selected from potassium nitrate and sodium nitrate, and mixtures thereof; a basic constituent; and a catalytic non-oxidizing molybdenum-containing additive. A gas generator and a gas generating system including compositions of the present invention are also contemplated.
    Type: Grant
    Filed: April 7, 2009
    Date of Patent: September 25, 2012
    Assignee: TK Holdings, Inc.
    Inventors: Deborah L. Hordos, Sudhakar R. Ganta, Graylon K. Williams, Sean P. Burns
  • Patent number: 8273198
    Abstract: Gas generating compositions include a primary fuel selected from aminotetrazoles and heterocyclic amines; a carbonyl donor selected from formaldehyde, formamide, or an ammonium formate; and a basic constituent selected from alkali and alkaline earth metal aminotetrazoles, hydantoin and basic derivatives thereof, and mixtures thereof. Gas generators and vehicle occupant protection systems incorporating the present compositions are also described.
    Type: Grant
    Filed: November 1, 2010
    Date of Patent: September 25, 2012
    Assignee: TK Holdings, Inc.
    Inventor: Deborah L. Hordos
  • Publication number: 20120227874
    Abstract: A percussion primer composition including at least one explosive, at least fuel particle having a particle size of about 1500 nm or less, at least one oxidizer, optionally at least one sensitizer, optionally at least one buffer, and to methods of preparing the same.
    Type: Application
    Filed: April 26, 2012
    Publication date: September 13, 2012
    Inventors: Jack Erickson, Joel Lee Sandstrom, Gene Johnston, Neal Norris, Patrick Braun, Reed Blau, Lisa Spendlove Liu, Rachel Hendrika Newell
  • Patent number: 8257522
    Abstract: Propellant compositions are provided herein for use in small arms cartridges. Such propellant compositions include a cellulose-based organic fuel, a non-azide, nitrogen-containing primary organic oxidizer and a secondary nitrate, perchlorate, chlorate of peroxide oxidizer. Preferably, such compositions are in the form of extruded shaped hollow cylindrical grains having dimensions that makes it loadable in a muzzleloader firearm or small calibre firearm cartridge case. Ignition grains are also provided for use alone or in a mixture with the propellant compositions. When used in a small calibre firearm or muzzleloader, the temperature of combustion is at a level that ensures substantially complete combustion of the fuel during firing so that the products of combustion are mostly gaseous.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: September 4, 2012
    Inventors: Mathieu Racette, Staphane Viau, Daniel Lepage
  • Patent number: 8241444
    Abstract: Gas generating compositions include a primary fuel selected from fumaric acid, succinic acid, cyanuric acid, barbituric acid, and mixtures thereof; an oxidizer selected from phase stabilized ammonium nitrate, potassium perchlorate, and mixtures thereof; a secondary fuel selected from tetrazoles, bitetrazoles, salts of bitetrazoles, derivatives of bitetrazoles, and mixtures thereof; and an oxide selected from molybdenum trioxide, ferric (III) oxide, and mixtures thereof. Gas generators and vehicle occupant protection systems incorporating the present compositions are also described.
    Type: Grant
    Filed: June 1, 2010
    Date of Patent: August 14, 2012
    Assignee: TK Holdings, Inc.
    Inventors: Deborah L. Hordos, Slaven Domazet, Sean P. Burns
  • Patent number: 8231801
    Abstract: A fire-extinguishing aerosol for precision electric appliance is disclosed, which includes oxidant, flammable agent, adhesive and additive. The composition of the present invention is characterized in that the oxidant is the mixture of the potassium salt and the strontium salt, in which the content of the potassium salt oxidant is more than or equal to 5 mass % to less than 15 mass % of the total mass of the composition, and the content of the strontium salt oxidant is more than 52 mass % to less than or equal to 60 mass % of the total mass of the composition. In the fire-extinguishing aerosol composition of the present invention, the particle average diameter of all components is less than 50 ?m. After quenching the fire in the space in which the precision electric appliance is installed, the fire-extinguishing aerosol composition of the present invention can ensure that the dielectric resistance of the precision electric appliance is more than or equal to 100 M?.
    Type: Grant
    Filed: November 14, 2007
    Date of Patent: July 31, 2012
    Assignee: Shaanxi J&R Fire Fighting Co., Ltd.
    Inventors: Hongbao Guo, Zanfeng Zhang
  • Patent number: 8216402
    Abstract: The present invention relates to a dry process for the manufacture of pyrotechnic objects from at least one reducing charge selected from guanidine derivatives, metal hydrides, alkali metal hydrides and alkaline earth metal hydrides, and at least one oxidizing charge selected from alkali metal nitrates, alkaline earth metal nitrates and basic metal nitrates, at least one of said reducing and oxidizing charges having the property of flowing under stress. Said process makes it possible to obtain pellets and small tablets directly by compaction/compression, to obtain granules, usable as such, by compaction and then granulation, and to obtain compressed objects by compaction, granulation and then compression. The high-performance pyrotechnic objects obtained constitute a further subject of the invention.
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: July 10, 2012
    Assignee: Herakles
    Inventors: Marie Gaudre, Eric Giraud, Dimitri Charrette
  • Publication number: 20120160379
    Abstract: The subject of the present invention is a pyrotechnic gas-generating product, the composition of which comprises: guanidine nitrate, basic copper nitrate, and potassium perchlorate. Characteristically, said potassium perchlorate represents between 8% and 20% of the total weight of said pyrotechnic product and said composition additionally contains at least one oxide, chosen from metal oxides, metalloid oxides and mixtures thereof; said at least one oxide having a melting point below the combustion temperature of said pyrotechnic product and said at least one oxide representing between 1% and 5% of the total weight of said pyrotechnic product. Said at least one oxide improves the combustion, at low pressure, of said pyrotechnic product.
    Type: Application
    Filed: September 10, 2010
    Publication date: June 28, 2012
    Applicant: SME
    Inventors: Frédéric Marlin, Stéphane Besombes
  • Publication number: 20120132328
    Abstract: A powdery pyrotechnic mixture is proposed that comprises a binary or ternary inorganic oxidizing agent mixture composed of one or two metal oxides, a nitrate totaling 50.0% by weight to 85.0% by weight, an elementary inorganic fuel or a mixture of elementary inorganic fuels totaling 15.0% by weight to 40.0% by weight, a stabilized nitrocellulose or a nitrocellulose-based propellant powder from 0.0% by weight to 25.0% by weight, graphite from 0.0% by weight to 5.0% by weight as well as. Optionally. a further processing aid from 0.0% by weight to 5.0% by weight. The powdery pyrotechnic mixture excels in that it contains no chlorate-containing compound and/or perchlorate-containing compound as an oxidizing agent and no sulfur or a sulfur-containing compound as fuel. The proposed pyrotechnic mixture is used in pyrotechnic objects and ammunition for the production of a bang-effect and/or flash effect.
    Type: Application
    Filed: November 29, 2011
    Publication date: May 31, 2012
    Applicant: RHEINMETALL WAFFE MUNITION GMBH
    Inventors: Julia Strenger, Dirk Cegiel, Christopher Zimmermann
  • Patent number: 8187397
    Abstract: An explosive emulsion to be used in conjunction with a gas-producing agent, such as sodium nitrite, to form an explosive emulsion with a density between 0.50 g/cm3 and 0.90 g/cm3. The present invention also includes the method for producing the explosive emulsion. The explosive emulsion is stable for at least 96 hours with nitrogen bubbles, having a predetermined dimension range, homogenously distributed. To maintain this low-density explosive emulsion stable, between 84% and 95% by weight of an oxidizing solution is combined with 5% to 16% by weight of a fuel solution. The fuel solution includes solid cacao fat as a stabilizing agent and stearic acid to prevent the combination of the nitrogen bubbles. The method for producing the oxidizing solution includes combining ammonium nitrate, sodium nitrate, thiourea, urea, and water at a temperature between 80 and 90 degrees centigrade. In another step of the method, a fuel solution is produced by combining an emulsifier, oil, diesel No.
    Type: Grant
    Filed: November 12, 2010
    Date of Patent: May 29, 2012
    Assignee: Industrias Minco, S.A.C.
    Inventors: Pio Francisco Perez Cordova, Luis Alfredo Cardenas Lopez
  • Patent number: 8182622
    Abstract: The invention provides for a perchlorate-free pyrotechnic composition. In one embodiment of the present invention, the pyrotechnic composition includes from approximately sixty-seven percent (67%) to approximately seventy-eight percent (78%) of strontium nitrate [Sr(NO3)2], from approximately two percent (2%) to approximately eleven percent (11%) of potassium nitrate [KNO3], from approximately six percent (6%) to approximately fifteen percent (15%) of sulfur [S], from approximately one percent (1%) to approximately ten percent (10%) of polyvinyl chloride, from approximately one percent (1.0%) to approximately four percent (4%) of paraffin oil, and from approximately zero percent (0%) to approximately two percent (2%) of sawdust mixture.
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: May 22, 2012
    Assignee: Standard Fusee Corporation
    Inventors: David Charles Ouart, John Alexander Conkling, Jeffrey Woodrow Johnson
  • Publication number: 20120118449
    Abstract: Alkali metal perchlorate-containing gas generant compositions which, upon combustion, produce or result in an improved effluent and related methods for generating an inflation gas for use in an inflatable restraint system are provided. Such alkali metal perchlorate-containing gas generant compositions include at least one alkali metal perchlorate present with a mean particle size in excess of 100 microns. Such alkali metal perchlorate-containing gas generant compositions also include or contain a suitable non-azide, organic, nitrogen-containing fuel and at least one copper-containing compound selected from the group consisting of basic copper nitrate, cupric oxide, copper diammine dinitrate-ammonium nitrate mixture wherein ammonium nitrate is present in the mixture in a range of about 3 to about 90 weight percent, copper diammine bitetrazole, a copper-nitrate complex resulting from reaction of 5-aminotetrazole with basic copper nitrate and combinations thereof.
    Type: Application
    Filed: January 23, 2012
    Publication date: May 17, 2012
    Applicant: Autoliv ASP, Inc.
    Inventors: Michael W. BARNES, Ivan V. Mendenhall, Robert D. Taylor
  • Patent number: 8157935
    Abstract: This invention relates to explosive grade ammonium nitrate porous granules. The granules are produced in a fluidized bed and are formed through a combination of layering and agglomeration to produce ammonium nitrate granules are spherical in shape, smooth, hard and dry and do not break down easily during handling. Ammonium nitrate granules of a specific size range and density can be prepared and the size range and density of the granules can be varied, depending on the application of the granules, and this has particular advantages in preparing granules for use in ANFO explosive compositions.
    Type: Grant
    Filed: August 2, 2007
    Date of Patent: April 17, 2012
    Assignee: Omnia Fertilizer Limited
    Inventors: Francois Christiaan Visagie, Rainer Ralf Pille
  • Patent number: 8142582
    Abstract: An explosive formulation used in blasting operations such as, but not limited to, mining operations and the like. The formulation is composed of a modified form of Ammonium Nitrate Fuel Oil (ANFO) explosives which have been modified by the incorporation of a solid fuel material. The formulation comprising a dry granular solid component, a liquid high-boiling point component of about 4% by weight, and a solid fuel material. The solid fuel material comprising vitrinite macerals, liptinite macerals, and inert macerals fusinite and semifusinite, and is characterized as (1) having a concentrate of liptinite that is higher than normal coals, and (2) having a concentrate of pseudovitrinite that is significantly lower than normal coals.
    Type: Grant
    Filed: August 8, 2005
    Date of Patent: March 27, 2012
    Assignee: Carbo*Prill, Inc.
    Inventors: Dennis R. Wilzbacher, Michael L. Schiele, John C. Harman
  • Patent number: 8133335
    Abstract: Propellant compositions are provided herein for use in small arms cartridges. Such propellant compositions include from about 70 to about 90% by weight of a cellulose-based organic fuel, from about 5 to about 30% by weight of a non-azide, nitrogen-containing primary organic oxidizer and from about 0.5 to about 10.0% by weight of a secondary nitrate, perchlorate, chlorate or peroxide oxidizer. Preferably, such compositions are in the form of extruded shaped hollow cylindrical grains having a length in the range of 0.030 to 0.200 inch, a diameter in the range 0.040 to 0.070 inch, and having a coaxial opening there through having a wall grain thickness in the range 0.008 to 0.016 inch. Ignition grains are also provided for use alone or in a mixture with the propellant compositions. When used in a small caliber firearm or muzzleloader, the temperature of combustion is at a level that ensures substantially complete combustion of the fuel during firing so that the products of combustion are mostly gaseous.
    Type: Grant
    Filed: February 9, 2007
    Date of Patent: March 13, 2012
    Inventors: Mathieu Racette, Stephane Vlau, Daniel Lepage
  • Publication number: 20120055593
    Abstract: The present invention is a gas generating composition including fuel and an oxidizing agent, which can be used for an inflator of a vehicle airbag apparatus, wherein the oxidizing agent includes basic copper carbonate, the gas generating composition having the content of the basic copper carbonate of more than 40% by mass and 60% by mass or lower, and satisfying the following requirements (a) to (c): (a) the burning rate is 7.0 mm/sec or above; (b) the gas output is 2.30 mol/100 g or above; and (c) the calorific value per mol of generated gas is 100 kJ/mol or lower.
    Type: Application
    Filed: May 14, 2010
    Publication date: March 8, 2012
    Inventor: Syouji Kobayashi
  • Patent number: 8123879
    Abstract: The invention generally relates to an energetic composition including adjacent layers of an explosive and a combustible fuel, and making of the energetic composition. Specifically, making the energetic composition includes vapor deposition of an explosive layer on a combustible fuel surface; alternatively, a combustible fuel layer may be chemically or physically deposited on an explosive surface to make the energetic composition.
    Type: Grant
    Filed: September 6, 2007
    Date of Patent: February 28, 2012
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Victor J. Bellitto, Stanley M. Caulder
  • Patent number: 8114228
    Abstract: The present invention provides a liquid gas generating composition comprising the following (a) to (c) components, wherein the content ratio of (b) component is 0.5 mass % or more and less than 5.0 mass %: (a) hydroxyammonium nitrate; (b) a thickening stabilizer; and (c) water.
    Type: Grant
    Filed: December 11, 2007
    Date of Patent: February 14, 2012
    Assignees: Daicel Chemical Industries, Ltd., Japan Aerospace Exploration Agency
    Inventors: Keiichi Hori, Toshiyuki Katsumi, Shogo Tomiyama, Syouji Kobayashi, Ko Murakami
  • Patent number: 8114230
    Abstract: High fidelity, non-explosive training aids (simulants) which simulate the properties of the explosive composition 4 (C-4) are described. The materials of the training aid are formulated to simulate the appearance, manifest rheological properties (pliability, plasticity), density, and “feel” of the actual C-4 as well as simulate the combustion behavior of C-4 when subjected to the informal “flame test” used to identify the material in the field. Additionally, the materials give the same signature as actual C-4 when tested by portable detection equipment such as electronic trace detectors or color forming reagents. The materials also generate the same imagery as C-4 when subjected to X-ray analysis.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: February 14, 2012
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Kenneth E. Basom
  • Patent number: 8101033
    Abstract: Alkali metal perchlorate-containing gas generant compositions which, upon combustion, produce or result in an improved effluent and related methods for generating an inflation gas for use in an inflatable restraint system are provided. Such alkali metal perchlorate-containing gas generant compositions include at least one alkali metal perchlorate present with a mean particle size in excess of 100 microns. Such alkali metal perchlorate-containing gas generant compositions also include or contain a suitable non-azide, organic, nitrogen-containing fuel and at least one copper-containing compound selected from the group consisting of basic copper nitrate, cupric oxide, copper diammine dinitrate-ammonium nitrate mixture wherein ammonium nitrate is present in the mixture in a range of about 3 to about 90 weight percent, copper diammine bitetrazole, a copper-nitrate complex resulting from reaction of 5-aminotetrazole with basic copper nitrate and combinations thereof.
    Type: Grant
    Filed: July 26, 2004
    Date of Patent: January 24, 2012
    Assignee: Autoliv ASP, Inc.
    Inventors: Michael W. Barnes, Ivan V. Mendenhall, Robert D. Taylor