Alkali Metal Or Alkaline Earth Metal Nitrate Salt Patents (Class 149/61)
  • Patent number: 9249063
    Abstract: The main subject of the present invention is solid pyrotechnic gas generator compounds, the composition of which contains: guanidine nitrate, basic copper nitrate, and at least one inorganic titanate, the melting point of which is above 2100 K. Said compounds are perfectly suitable for use in frontal airbags.
    Type: Grant
    Filed: May 9, 2012
    Date of Patent: February 2, 2016
    Assignee: HERAKLES
    Inventors: Frédéric Marlin, Stéphane Besombes
  • Publication number: 20150033969
    Abstract: The present invention relates generally to an explosive composition comprising an aqueous emulsion of: an oxidizer component, a hydrocarbon fuel component containing emulsifier, and a bulking agent being a fuel-type waste material in a solid particulate form substantially lacking rough surfaces and sharp edges. Preferably the composition is of an ammonium nitrate based emulsion and a pelletised bulking agent. It also involves a method of providing an explosive composition to a blast site using a conventional mobile processing unit (MPU), being a truck having separate compartments adapted for holding fuel oil, dry ammonium nitrate prill, and ammonium nitrate based emulsion, where a compartment instead holds particulate waste material. It also concerns a method of blasting soft and wet ground, which comprises injecting into one or more blast holes in the soft and wet ground a sufficient quantity of the composition, and then setting off the composition.
    Type: Application
    Filed: March 8, 2013
    Publication date: February 5, 2015
    Inventors: Jeff Gore, Nathan Paris
  • Patent number: 8888936
    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: Grant
    Filed: November 29, 2011
    Date of Patent: November 18, 2014
    Assignee: Rheinmetall Waffe Munition GmbH
    Inventors: Julia Strenger, Dirk Cegiel, Christopher Zimmermann
  • Patent number: 8784583
    Abstract: A primer for small arms ammunition including a primary explosive and an oxidizer system containing bismuth oxide is provided. A method of forming the primer and a small arms ammunition cartridge also is provided. The oxidizer system can be non-hygroscopic and non-toxic. The primer can include reducing agents or fuels, sensitizers, binders and gas producing agents.
    Type: Grant
    Filed: January 23, 2004
    Date of Patent: July 22, 2014
    Assignee: RA Brands, L.L.C.
    Inventors: Donald Allen Pile, Henry J. John, Jr.
  • Patent number: 8784584
    Abstract: Perchlorate-free flare compositions are disclosed which, when burned, produce yellow smoke and flames. Methods of producing the compositions are also disclosed.
    Type: Grant
    Filed: July 3, 2013
    Date of Patent: July 22, 2014
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Christina M. Yamamoto, Robert G. Shortridge
  • 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
  • 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: 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
  • Patent number: 8568542
    Abstract: Perchlorate-free flare compositions are disclosed which, when burned, produce yellow smoke and flames. Methods of producing the compositions are also disclosed.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: October 29, 2013
    Assignee: United States of America as represented by the Secretary of the Navy
    Inventors: Christina M. Yamamoto, Robert G. Shortridge
  • 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
  • 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: 8425703
    Abstract: Embodiments of the invention provide munitions that are optimized for both performance and safety. According to various embodiments of the invention, primers are provided having reduced sensitivity by using less sensitive ingredients. The primer formulations according to embodiments of the invention provide primers that are insensitive to stimulants that tend to cause inappropriate ignition of main propelling charges.
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: April 23, 2013
    Assignee: The United States of Amierica as Represented by the Secretary of the Navy
    Inventors: Christine Marie Michienzi, Christine Dianne Knott
  • 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: 8366847
    Abstract: Perchlorate-free flare compositions are disclosed which, when burned, produce yellow smoke and flames. Methods of producing the compositions are also disclosed.
    Type: Grant
    Filed: January 14, 2011
    Date of Patent: February 5, 2013
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Christina M. Yamamoto, Robert G. Shortridge
  • Patent number: 8277583
    Abstract: Perchlorate-free flare compositions are disclosed which, when burned, produce red smoke and flames. Methods of producing the compositions are also disclosed.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: October 2, 2012
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Robert G. Shortridge, Christina M. Yamamoto
  • 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: 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: 8216403
    Abstract: Perchlorate-free flare compositions are disclosed which, when burned, produce red smoke and flames. Methods of producing the compositions are also disclosed.
    Type: Grant
    Filed: January 14, 2011
    Date of Patent: July 10, 2012
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Robert G. Shortridge, Christina M. Yamamoto
  • 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
  • Publication number: 20120125493
    Abstract: A priming mixture is provided having a primary explosive and an oxidizer system containing bismuth oxide. The priming mixture generally is applicable to any application or device that employs ignition of a propellant or fuel, including, but not limited to, air bag gas generator systems, signaling devices, ejection seats, small or large arms ammunition primers, and the like.
    Type: Application
    Filed: February 1, 2012
    Publication date: May 24, 2012
    Inventors: Donald A. Pile, Henry J. John, JR.
  • 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: 20120118448
    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 immaterial at nanoscale.
    Type: Application
    Filed: October 6, 2008
    Publication date: May 17, 2012
    Applicant: INSTITUT FRANCO-ALLEMAND DE RECHERCHES DE SAINT-LOUIS
    Inventors: Marc Comet, Denis Spitzer, Vincent Pichot
  • Patent number: 8147706
    Abstract: A low temperature flameless aerosol producing fire extinguishing composition containing potassium nitrate and binding fuel is characterized by using cellulose-fibrous mass as a binding fuel, with potassium nitrate at 30-70% and fibrous cellulose mass making up the remainder. A production method for the composition is further provided.
    Type: Grant
    Filed: May 10, 2010
    Date of Patent: April 3, 2012
    Assignee: ATOZ Design Labs Co., Limited
    Inventors: Zachary Joseph Zeliff, Liana Vladimirovna Loveless, Vladimir Victorovich Kutsel, Aleksander Ivanovich Doronichev
  • Publication number: 20120060985
    Abstract: A precursor composition of a reactive material that comprises a metal material and an energetic material, such as at least one oxidizer or at least one class 1.1 explosive. The metal material defines a continuous phase at a processing temperature of the precursor composition and the energetic material is dispersed therein. The metal material may be a fusible metal alloy having a melting point ranging from approximately 46° C. to approximately 250° C. The fusible metal alloy may include at least one metal selected from the group consisting of bismuth, lead, tin, cadmium, indium, mercury, antimony, copper, gold, silver, and zinc. The reactive composition may have a density of greater than approximately 2 g/cm3. The reactive composition may also include a polymer/plasticizer system.
    Type: Application
    Filed: October 20, 2011
    Publication date: March 15, 2012
    Applicant: ALLIANT TECHSYSTEMS INC.
    Inventors: Benjamin N. Ashcroft, Daniel B. Nielson, Daniel W. Doll
  • 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
  • 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: 8097103
    Abstract: Methods of making and resultant compositions thereof, which include copper-oxalyldihydrazide-based complexes, such as pyrotechnic compositions, gas generants, and ignition materials, which are useful, for example, in inflatable restraint systems. Synthesis of one or more copper-oxalyldihydrazide complexes with nitrate and/or hydroxide counter ions provides a composition that may auto-ignite at a low enough temperature to be based with thermally sensitive gas generants. The present copper-oxalyldihydrazide complexes may also be used in conjunction with various oxidizers to produce compositions with sufficient energy to auto-ignite practically any known pyrotechnic composition.
    Type: Grant
    Filed: June 18, 2009
    Date of Patent: January 17, 2012
    Assignee: AUTOLIV ASP, Inc.
    Inventors: Robert D. Taylor, Gregg Hess
  • Patent number: 8088235
    Abstract: A novel compound, used for example, as a gas generating fuel, is defined as a compound having the structural formula of R3—R1—R2, wherein R1 is a benzene ring with nitro substitution, R2 is a tetrazolyl group with a C—C bond to the benzene ring, and R3 is a tetrazolyl group with a C—C bond to the benzene ring. Other fuels used in the gas generant compositions of the present invention include methylene bi(tetrazole); and 2,3-bis(tetrazolo) pyrazine. A method of making the compound is also provided. Gas generant compositions 12 containing these fuels are provided within a gas generator 10. The gas generator 10 may be contained within a gas generating system 200 such as an airbag inflator 10 or seat belt assembly 150, or more broadly within a vehicle occupant protection system 180.
    Type: Grant
    Filed: May 7, 2007
    Date of Patent: January 3, 2012
    Assignee: TK Holdings, Inc.
    Inventors: Sudhakar R. Ganta, Graylon K. Williams, Cory G. Miller
  • Publication number: 20110290386
    Abstract: The invention relates to the development of a low-density granular Oxidizing Agent (PAN), the ingredients of which do not segregate and are conferred with explosive properties through the simple mixture thereof with combustible ingredients, thereby producing a low density granular Blasting Agent (PANFO). PANFO has many applications in the mining industry, in both open-pit and underground operations, said agent being suitable for use alone in applications intended to control damage to the banks or mixed other explosives typically used in the industry. According to the invention the density of the mixture can be adjusted to the conditions of the rock to be blasted and, consequently, the fragmentation requirements can be maximised.
    Type: Application
    Filed: September 21, 2009
    Publication date: December 1, 2011
    Inventor: Guillermo Carlos Oscar Silva
  • Patent number: 8066833
    Abstract: A novel non-toxic IR tracer composition is provided herein which, when incorporated into an IR tracer projectile which is then fired, generates a dim visibility IR trace. Such IR tracer composition is a non-toxic, boron-containing, IR tracer composition comprising: from about 20 to about 30% by weight, or from about 45 to about 60% by weight, of potassium perchlorate; from about 5 to about 16% by weight of a metallic fuel which consists of boron; from about 20 to about 25% by weight, or from about 40 to about 50% by weight, of a non-metallic fuel which consists of sodium salicylate; from about 5 to about 10% by weight of a retardant which consists either of iron carbonate or magnesium carbonate; and an effective amount of binder, wherein the total percentage of such ingredients add up to 100%. A novel IR tracer projectile containing such IR tracer composition for generating a dim visibility IR trace is also provided.
    Type: Grant
    Filed: March 28, 2006
    Date of Patent: November 29, 2011
    Assignee: General Dynamics Ordnance and Tactical Systems-Canada Inc.
    Inventors: Louise Guindon, Carol Jalbert, Daniel Lepage
  • Patent number: 8048243
    Abstract: The present invention pertains to combustion catalysts, including processes for achieving increased thermal output from combustion processes, processes for improved combustion in boilers and furnaces, processes for reducing the emission of undesirable pollutants, and processes for increasing the combustion of carbon.
    Type: Grant
    Filed: December 4, 2008
    Date of Patent: November 1, 2011
    Inventor: Evan Lipstein
  • Patent number: 7981225
    Abstract: A lead-free primer energetic composition including Cyanuric Triazide (60%), Tetracene (5%), Barium Nitrate (20%) and Antimony Trisulfide (15%) is produced. The lead-free primer energetic composition is used to construct a primary detonator including a transfer charge of Cyanuric Triazide, which produces a further initiation train that may subsequently detonate a secondary explosive, i.e., HDX, RDX, or a pyrotechnic device.
    Type: Grant
    Filed: October 19, 2006
    Date of Patent: July 19, 2011
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Neha Mehta, Gartumg Cheng, Emily A. Cordaro, Neelam Mehta, Carl Hu, Robert Lateer, Daniel Stec, III, Raja G. Duddu, Paritosh R. Dave, Kathy Yang
  • Publication number: 20110169254
    Abstract: Airbag inflators employ gas generating compositions formed from a mixture of fuels and a mixture of oxidizers and preferably mica at levels of 1 to 5% by weight. The gas generant composition contains a primary and secondary fuel. The primary fuel is a guanidine compound, preferably guanidine nitrate. The secondary fuel is selected from tetrazoles, triazoles and mixtures thereof at levels of 5% by weight or less of the total gas generant composition. The oxidizer system is a mixture of at least two components selected from the group consisting of transition metal oxides, alkali metal nitrates and alkaline earth metal nitrates. The novel gas generants yield inflating gases having a reduced content of undesirable gases such as nitrous oxides and carbon monoxide.
    Type: Application
    Filed: July 7, 2008
    Publication date: July 14, 2011
    Applicant: LSI CORPORATION
    Inventor: Luca Bert
  • Patent number: 7942989
    Abstract: An initiator explosive for detonating a second explosive that includes nanocrystalline silicon containing a plurality of pores and a solid state oxidant disposed within said pores.
    Type: Grant
    Filed: December 9, 2003
    Date of Patent: May 17, 2011
    Assignee: The Regents of the University of California
    Inventors: Michael J. Sailor, Frederic V. Mikulec, Joseph D. Kirtland
  • Patent number: 7914632
    Abstract: A novel compound, used for example, as a gas generating fuel, is methoxy carbonyl-5 amino tetrazole. A method of making the compound is also provided. A gas generating composition, containing the novel compound as a fuel, and an oxidizer is also provided. The novel compound may be contained within a gas generant composition 12, within a gas generator 10. The gas generator 10 may be contained within a gas generating system 200 such as an airbag inflator 10 or seat belt assembly 150, or more broadly within a vehicle occupant protection system 180.
    Type: Grant
    Filed: May 7, 2007
    Date of Patent: March 29, 2011
    Assignee: TK Holdings, Inc.
    Inventors: Sudhakar R. Ganta, Graylon K. Williams, Cory G. Miller
  • Patent number: 7914633
    Abstract: Sulfur-free and carbon-free, white propellant compositions for use as a blackpowder substitute in firearms, munitions, and pyrotechnics to form combustion byproducts that are water soluble and are free of corrosive sulfur compounds and black carbon residues. Formulations include a fuel agent selected from the group consisting of sodium benzoate, lactose, sodium salicylate, sodium m-nitrobenzoate, and mixtures thereof. The fuel agent is combined with dextrin, potassium nitrate, potassium perchlorate, and tricalcium phosphate. Dicyanodiamide may be incorporated in the formulation as a burn rate modifier.
    Type: Grant
    Filed: October 10, 2007
    Date of Patent: March 29, 2011
    Assignee: Hodgdon Powder Company, Inc.
    Inventors: G Dean Barrett, Terry M Dielh, Thomas W Bowen
  • Patent number: 7914631
    Abstract: An azide-free gas-generating composition for use in gas generators for safety arrangements, in particular in gas generators for vehicle occupant restraint systems, includes a fuel and an oxidizer. The fuel is a compound having a melting point of at least 120 degrees C., and is selected from the group of nitrogenous organic compounds and of aliphatic dicarboxylic acids, and mixtures, derivatives and salts thereof. The oxidizer comprises tetrakis(2,2,2-trinitroethyl)orthocarbonate (TNEOC), with the TNEOC being present in a proportion of at least 10% by weight of the composition.
    Type: Grant
    Filed: June 13, 2005
    Date of Patent: March 29, 2011
    Assignee: TRW Automotive Airbag Systems GmbH
    Inventors: Siegfried Zeuner, Uwe Reimann, Roland Schropp, Karl-Heinz Roedig
  • Patent number: 7833365
    Abstract: The present invention provides a gas generating composition comprising a light rare earth compound.
    Type: Grant
    Filed: January 26, 2007
    Date of Patent: November 16, 2010
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Kenji Kitayama, Shogo Tomiyama
  • Publication number: 20100084060
    Abstract: Gas-generating compositions and methods for their use are provided. Metal complexes are used as gas-generating compositions. These complexes are comprised of a metal cation template, a neutral ligand containing hydrogen and nitrogen, and sufficient oxidizing anion to balance the charge of the complex. The complexes are formulated such that when the complex combusts, nitrogen gas and water vapor is produced. Specific examples of such complexes include metal nitrite amine, metal nitrate amine, and metal perchlorate amine complexes, as well as hydrazine complexes. A binder and co-oxidizer can be combined with the metal complexes to improve crush strength of the gas-generating compositions and to permit efficient combustion of the binder. Such gas-generating compositions are adaptable for use in gas-generating devices, such as automobile air bags.
    Type: Application
    Filed: December 4, 2009
    Publication date: April 8, 2010
    Applicant: ALLIANT TECHSYSTEMS INC.
    Inventors: Jerald C. Hinshaw, Daniel W. Doll, Reed J. Blau, Gary K. Lund
  • Patent number: 7686901
    Abstract: A gas generating composition 12 containing a polyvinylazole is contained within an exemplary gas generator 10. A gas generating system 200 incorporates the polyvinylazole therein. A vehicle occupant protection system 180 incorporates the gas generating system 200.
    Type: Grant
    Filed: November 1, 2005
    Date of Patent: March 30, 2010
    Assignee: Automotive Systems Laboratory, Inc.
    Inventors: Cory G. Miller, Graylon K. Williams
  • Publication number: 20090320977
    Abstract: Perchlorate-free flare compositions are disclosed which, when burned, produce red smoke and flames. Methods of producing the compositions are also disclosed.
    Type: Application
    Filed: December 12, 2008
    Publication date: December 31, 2009
    Inventors: ROBERT G. SHORTRIDGE, CHRISTINA M. YAMAMOTO
  • Publication number: 20090320976
    Abstract: Perchlorate-free flare compositions are disclosed which, when burned, produce yellow smoke and flames. Methods of producing the compositions are also disclosed.
    Type: Application
    Filed: December 12, 2008
    Publication date: December 31, 2009
    Inventors: CHRISTINA M. YAMAMOTO, Robert G. Shortridge
  • Publication number: 20090223611
    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 of 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: Application
    Filed: February 9, 2007
    Publication date: September 10, 2009
    Applicant: General Dynamics Ordnance and Tactical Systems- Canada Valleyfield Inc.
    Inventors: Mathieu Racette, Stephane Viau, Daniel Lepage
  • Publication number: 20090211672
    Abstract: The pyrotechnic smoke kit for generating a smoke screen comprises a mixture of a light-metal powder as the metallic reduction agent; potassium nitrate and, optionally, potassium perchlorate as the main oxidation agent; at least one carbonate as an additional auxiliary oxidation agent; substances splitting off nitrogen as combustion moderators and at least one sublimable and/or evaporable non-toxic smoke-forming substance. A stabilizer from the group of aliphatic and/or aromatic dicarboxylic acids is added to the mixture of the smoke kit to stabilize the smoke kit. Due to this, the formation of gaseous ammonia in the smoke kit can be prevented.
    Type: Application
    Filed: February 18, 2009
    Publication date: August 27, 2009
    Inventors: Uwe Krone, Klaus Moeller, Kai Ballentin
  • Patent number: 7578895
    Abstract: A perchlorate-free solid pyrotechnic flash bang composition is disclosed, which comprises an oxidizer component selected from the group comprising potassium nitrate, strontium nitrate, and basic copper nitrate and combinations thereof, a metallic fuel component selected from the group comprising aluminum, magnesium, magnesium-aluminum alloys, silicon, zirconium, and combinations thereof, and a non-metallic fuel component comprising sulfur. The flash bang pyrotechnic composition may also further comprise a ballistic accelerant component, a pH stabilizer, and a free flow/anti-caking component.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: August 25, 2009
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Gary Chen, Mark Motyka, Jay C. Poret
  • Publication number: 20090205757
    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: Application
    Filed: June 15, 2006
    Publication date: August 20, 2009
    Applicant: SNPE MATERIAUX ENERGETIQUES
    Inventors: Marie Gaudre, Eric Giraud, Dimitri Charrette
  • Publication number: 20090133787
    Abstract: The invention relates to a pyrotechnic agent containing at least one azotetrazolate as a component thereof.
    Type: Application
    Filed: June 2, 2006
    Publication date: May 28, 2009
    Applicant: RUAG AMMOTEC GMBH
    Inventors: Ulrich Bley, Rainer Hagel, Julia Havlik, Aleksej Hoschenko, Peter Simon Lechner
  • Publication number: 20090008003
    Abstract: The present invention includes a gas generator 10 that incorporates a gas generating composition 12 and a scavenging additive 16 in heterogeneous but vapor/gaseous communication with the gas generating composition 12. The scavenging additive retains moisture/contaminants typically evolving over time at relatively higher temperatures. The present invention further includes a gas generating system 180 incorporating the gas generator 10.
    Type: Application
    Filed: July 2, 2008
    Publication date: January 8, 2009
    Inventors: Sean P. Burns, Jeffrey W. Halpin, Graylon K. Williams, Paresh S. Khandhadia, Deborah L. Hordos, Jason Newell
  • Patent number: 6972059
    Abstract: An exothermal feeder mass is described, containing aluminum and magnesium, at least one oxidizing agent, a SiO2-containing filler, and an alkali silicate as the binder; it is characterized in that it contains roughly 2.5 to 20% by weight of a reactive aluminum oxide with a specific surface of at least roughly 0.5 m2/g and an average particle diameter (d50) from roughly 0.5 to 8 microns and is essentially free of fluoride-containing fluxes.
    Type: Grant
    Filed: May 20, 2000
    Date of Patent: December 6, 2005
    Assignee: AS Lungen GmbH & Co. KG
    Inventor: Udo Skerdi