Containing Particular Fuel And Particular Oxidizer Patents (Class 149/109.2)
  • Patent number: 10309346
    Abstract: A cylindrically-shaped hybrid rocket engine solid fuel grain defines an axial combustion port. A fuel grain material comprises a compounded blend of thermoplastic fuel and aluminum. The fuel grain comprises fused stack layers, each layer comprising a plurality of fused abutting concentric beaded structures arrayed to define the combustion port; the port exhibits a rifling pattern or rifling inducing geometry along the port wall. When an oxidizer is introduced into the combustion port combustion occurs along the exposed port wall. Each beaded structure defines a geometry that increases the combustion surface area while inducing a vortex flow of oxidizer and fuel gas. As each layer ablates, an abutting layer exhibiting a similar geometry, is revealed, undergoes a gas phase change, and ablates. This process repeats and persists until oxidizer flow is terminated or the fuel grain material is exhausted. The fuel grain may be manufactured by an additive manufacturing process.
    Type: Grant
    Filed: January 11, 2018
    Date of Patent: June 4, 2019
    Inventor: Ronald D Jones
  • Patent number: 9988321
    Abstract: Provided is a gas generating composition which can maintain stable combustion performance even under variation of ambient temperature. The gas generating composition includes (a) a fuel and (b) an oxidizing agent and meets the following requirements (I) and (II): (I) a combustion temperature at a time of ignition and combustion at any ambient temperature within a range of ?40° C. to 85° C. is a melting point of a substance included in a combustion residue; and (II) a difference between combustion temperatures at the time of ignition and combustion at ambient temperatures of ?40° C. and 85° C. is less than 125 K.
    Type: Grant
    Filed: September 20, 2013
    Date of Patent: June 5, 2018
    Assignee: DAICEL CORPORATION
    Inventors: Yoji Fujisaki, Naoki Matsuda
  • Patent number: 8986630
    Abstract: Provided is a gas-generating material which can generate a gas in a large amount per unit time and has high storage stability. The gas-generating material 11a according to the present invention comprises a gas-generating agent that is an azo compound or an azide compound, a tertiary amine, a photosensitizing agent and a binder resin.
    Type: Grant
    Filed: September 25, 2012
    Date of Patent: March 24, 2015
    Assignee: Sekisui Chemical Co., Ltd.
    Inventors: Yoshinori Akagi, Shigeru Nomura
  • Patent number: 8932417
    Abstract: Methods and systems for mixing propellant formulations are disclosed herein. In one embodiment, a method of mixing a solid propellant formulation includes placing a first component (e.g., a polymer or fuel) and a second component (e.g., an oxidizer of suitable particle size) in a mix vessel. The method further includes mixing the first and second components together by rotating the mix vessel about a first axis and, during at least a portion of the vessel rotation, revolving the vessel about a second axis spaced apart from the first axis. In one embodiment, the first axis can be a vessel spin axis, and the second axis can be spaced apart from the first axis so that the vessel revolves about the second axis in a planetary manner. In another embodiment, the vessel can rotate about the first axis in a first direction while revolving about the second axis in a second direction, opposite to the first direction.
    Type: Grant
    Filed: June 11, 2007
    Date of Patent: January 13, 2015
    Assignee: Pacific Scientific Energetic Materials Company
    Inventors: Robert Nicholas Renz, James Lemister, Steven Ray Johnson, Ralph Chengkung Hsiao
  • Publication number: 20140373983
    Abstract: A process of producing an infrared radiation-generating decoy for protecting against heat-seeking missiles and other heat-seeking devices comprises the step of decomposing a metal carboxy compound in the substantial absence of gaseous oxygen, to produce a pyrophoric material as a decomposition product of the metal carboxy compound, which pyrophoric material is arranged to combust spontaneously upon contact with air when the decoy is used. The metal carboxy compound may be iron oxalate, and the pyrophoric material may be ferrous oxide. The pyrophoric material may be coated onto a substrate, and a plurality of coated substrate pieces may be used in a decoy.
    Type: Application
    Filed: May 1, 2014
    Publication date: December 25, 2014
    Applicant: CHEMRING COUNTERMEASURES LIMITED
    Inventor: Alexander Kit LAY
  • 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
  • Publication number: 20140332126
    Abstract: Inorganic fuel selected from the group of sulphocyanides of noble metals as specially copper, as well as the derivatives of urea and semicarbazide and theirs derivatives and organic fuel selected from the group of thiols with sulphur bound in the —SH group or in the heterocyclic rings and the metal salts of these compounds, mostly cuprous or cupric, which are suitable for the infrared tracer compositions used in bullets. With a suitable oxidant, which is zinc peroxide, the fuel forms binary mixtures that, during combustion, emit radiation in the near-infrared region that is invisible to the naked eye. On the basis of this invention tracer compositions do not require any additional auxiliary pyrotechnic systems. They are intended for use in infrared tracers of conventional calibres of bullet ammunition.
    Type: Application
    Filed: December 18, 2012
    Publication date: November 13, 2014
    Inventor: Jiri Nesveda
  • Patent number: 8801878
    Abstract: A lead-free pyrotechnic and primary explosive compositions including metal iodates as an oxidizer in nanocomposite energetic compositions including metal powder fuel.
    Type: Grant
    Filed: September 7, 2011
    Date of Patent: August 12, 2014
    Assignee: The United States of America as Represented by the Secretary of the Navy
    Inventors: Curtis E. Johnson, Kelvin T. Higa
  • Patent number: 8795451
    Abstract: A propellant for guns includes at least one energy carrier, nitrocellulose and cellulose acetate butyrate. At least part of the nitrocellulose is alcohol-soluble nitrocellulose. The nitrocellulose serves as a binder and for that purpose is present in a concentration of at least 15% by weight in the propellant. A process for producing a propellant is also provided.
    Type: Grant
    Filed: May 18, 2011
    Date of Patent: August 5, 2014
    Assignee: Diehl BGT Defence GmbH & Co. KG
    Inventors: Dietmar Müller, Walter Langlotz
  • Patent number: 8784585
    Abstract: A gas generator 10 includes an autoignition composition that contains an alkali metal chlorate such as potassium chlorate as an oxidizer, a carboxylic acid such as DL-tartaric acid as a fuel, and a desiccant in operable communication therewith. Gas generating systems 180 such as vehicle occupant protection systems 180, containing the gas generator 10, are also provided.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: July 22, 2014
    Assignee: TK Holdings Inc.
    Inventors: Sean P. Burns, Deborah L. Hordos, Jason Newell
  • Patent number: 8778103
    Abstract: Methods of forming energetic compositions include forming a premix comprising a nitrate ester, a polymer, and a stabilizer, and combining solids with the premix. Additional stabilizer may be added with the solids and may remain in a crystalline state. Some methods include dissolving a stabilizer in at least one of a plurality of nitrate esters. Energetic compositions include a continuous matrix and a stabilizer. The continuous matrix includes a nitrate ester and surrounds a solid energetic material. Some compositions include a first nitrate ester, a second nitrate ester having a decomposition rate lower than the first nitrate ester, and a stabilizer. An article includes a housing and an energetic composition in the housing.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: July 15, 2014
    Assignee: Alliant Techsystems Inc.
    Inventors: John R. Moser, Jr., Richard L. Raun, David D. Shaw
  • Patent number: 8758531
    Abstract: Provided is a fuel of catalytic metal-containing ionic liquid (MCIL) and an IL, to spur hypergolic ignition of such liquids upon contact with an oxidizer to define a hypergolic bipropellant.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: June 24, 2014
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Stefan Schneider, Tommy W. Hawkins, Yonis Ahmed, Michael Rosander
  • Publication number: 20140161687
    Abstract: Provided is a gas-generating material which can generate a gas in a large amount per unit time and has high storage stability. The gas-generating material 11a according to the present invention comprises a gas-generating agent that is an azo compound or an azide compound, a tertiary amine, a photosensitizing agent and a binder resin.
    Type: Application
    Filed: September 25, 2012
    Publication date: June 12, 2014
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Yoshinori Akagi, Shigeru Nomura
  • Patent number: 8746145
    Abstract: A munition is described including a reactive fragment having an energetic material dispersed in a metallic binder material. A method is also described including forming a energetic material; combining the energetic material with a metallic binder material to form a mixture; and shaping the mixture to form a reactive fragment. The munition may be in the form of a warhead, and the reactive fragment may be contained within a casing of the warhead.
    Type: Grant
    Filed: June 18, 2012
    Date of Patent: June 10, 2014
    Assignee: Lockheed Martin Corporation
    Inventors: George D. Hugus, Edward W. Sheridan, George W. Brooks
  • 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: 8696838
    Abstract: A method of manufacture of foamed celluloid molded products, involving three steps for the manufacture of higher density (0.7 to 1.25 gm/cc) foamed celluloid products or simple geometry lower density (0.2 to 0.7 gm/cc) foamed celluloid products, and four steps for the manufacture of lower density foamed celluloid products of any geometry. The three step process involving: (1) providing small, uniform, pieces of celluloid; (2) presoaking the pieces in a physical blowing agent (PBA) under pressure; and (3) foaming at raised temperature a controlled quantity of the presoaked pieces in a mold—to obtain the desired shape and density. For a lower density foamed celluloid product, of any moldable geometry, the steps are to: (1) small pieces of celluloid, that (2) have been presoaked in a PBA, are (3) pre-expanded to an intermediate density, and then (4) foam the desired lower density foamed product in a mold at raised temperature.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: April 15, 2014
    Assignee: The United States of America as Represented by the Secretary of the Army
    Inventors: Niloufar Faridi, Linjie Zhu, Ming-Wan Young, Costas G. Gogos, Fei Shen, Elbert Caravaca, Mohamed Elalem, Viral Panchal, Dale Conti
  • Patent number: 8685186
    Abstract: A group of tertiary amine azides are useful as hypergolic fuels for hypergolic bipropellant mixtures. The fuels provide higher density impulses than monomethyl hydrazine (MMH) but are less toxic and have lower vapor pressures that MMH. In addition, the fuels have shorter ignition delay times than dimethylaminoethylazide (DMAZ) and other potential reduced toxicity replacements for MMH.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: April 1, 2014
    Assignee: CFD Research Corporation
    Inventor: Debasis Sengupta
  • Patent number: 8685187
    Abstract: Disclosed are thermite charges for use in well perforation and downhole fracing. The thermite charges have a core, and optionally a case, where at least one of the core and the case includes thermite material.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: April 1, 2014
    Assignee: Schlumberger Technology Corporation
    Inventors: Chenghua Han, Hongfa Huang
  • 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: 8641842
    Abstract: Propellant compositions include an energetic binder, such as nitrocellulose, and a stabilized, encapsulated red phosphorous as a ballistic modifier. The propellant composition may additionally include an energetic plasticizer, such as nitroglycerine. For example, the propellant composition may be formed by mixing a double or multi base propellant that includes nitrocellulose plasticized with nitroglycerine with the stabilized, encapsulated red phosphorus. The propellant compositions may be substantially lead-free and may exhibit improved ballistic properties. Methods of forming such propellant compositions and an ordnance device including such propellant compositions are also disclosed.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: February 4, 2014
    Assignee: Alliant Techsystems Inc.
    Inventors: Matthew T. Hafner, Ruben Balangue, Danny D. Clark, John William Westbrook, III
  • Patent number: 8636860
    Abstract: An energetic ionic liquid catalytic decomposition gas generator uses stoichiometric and nonstoiciometric mixtures of specific energetic ionic liquids and iridium catalyst. The catalyst temperature used and gas production versus ignition may be controlled by combining one or more cationic species with one or more anionic species of the ionic liquid(s).
    Type: Grant
    Filed: December 1, 2010
    Date of Patent: January 28, 2014
    Assignees: Streamline Automation, LLC, The University of Alabama
    Inventors: Roberto DiSalvo, H. Waite Dykes, Jr., Robin D. Rogers, Julia Shamshina, Marcin Smiglak
  • Patent number: 8617326
    Abstract: Advanced bipropellant fuels with fast ignition upon mixing with storable oxidizer (N2O4, nitric acid) have been synthesized and demonstrated. The bipropellant fuels are based upon salts containing dicyanamide or tricyanomethanide anions and employ at least two hydrazine functionalities in the cations.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: December 31, 2013
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Stefan Schneider, Tommy W. Hawkins, Michael S. Rosander
  • Patent number: 8613821
    Abstract: Provided is a basic metal nitrate suitable as an oxidizing agent for a gas generating agent, which is a basic metal nitrate having a good thermal stability and meeting at least one requirement of the following (a) to (d): (a) a particle diameter of 0.5 to 40 ?m; (b) a degree of crystallinity having 0.4 deg or less of a half band width of the peak in the X-ray analysis; (c) an initiation temperature of weight loss being 220° C. or higher according to TG-DTA analysis; and (d) an impurity content of 1,000 ppm or less based on Na atom. Further provided is a gas generating composition which has a low toxicity, a high burning rate and a low combustion temperature and which is used in a gas generator for an air bag. The gas generating composition comprises (a) tetrazole derivatives, guanidine derivatives or a mixture thereof, (b) a basic metal nitrate and (c) a binder and/or a slag-forming agent.
    Type: Grant
    Filed: September 8, 2010
    Date of Patent: December 24, 2013
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Xingxi Zhou, Kazuyuki Matsuoka, Jianzhou Wu, Yo Yamato, Takeshi Takahori, Kaoru Yamazaki
  • 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: 8597445
    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: Grant
    Filed: February 1, 2012
    Date of Patent: December 3, 2013
    Assignee: RA Brands, L.L.C.
    Inventors: Donald A. Pile, Henry J. John, Jr.
  • Patent number: 8591676
    Abstract: A thermite composition includes at least one composite particle having a convoluted lamellar structure having alternating metal oxide layers including a metal oxide and metal layers including a metal capable of reducing the metal oxide. The metal oxide layers and metal layers both have an average thickness of between 10 nm and 1 ?m. Molar proportions of the metal oxide and metal is within 30% of being stoichiometric for a thermite reaction.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: November 26, 2013
    Assignees: University of Central Florida Research Foundation, Inc., Lockheed Martin Corporation
    Inventors: Kevin R. Coffey, Edward Dein, Dickson Hugus, Edward Sheridan
  • Patent number: 8585839
    Abstract: A large-scale synthetic method that enables the preparation of nanoenergetic composites in kilogram scales which forms superior materials as compared to the ultra-sonicated nanoenergetic composites and at a lower cost for use in explosive, pyrotechnic, agent defeat, ammunition primers, and propellant applications.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: November 19, 2013
    Assignee: The United States of America as Represented by the Secretary of the Navy
    Inventor: Kelvin T. Higa
  • Patent number: 8580054
    Abstract: In one embodiment, a melt-castable energetic material comprises at least one of: 3,5-bis(4-nitro-1,2,5-oxadiazol-3-yl)-1,2,4-oxadiazole (DNFO), and 3-(4-amino-1,2,5-oxadiazol-3-yl)-5-(4-nitro-1,2,5-oxadiazol-3-yl)-1,2,4-oxadiazole (ANFO). In another embodiment, a method for forming a melt-castable energetic material includes reacting 3,5-bis(4-amino-1,2,5-oxadiazol-3-yl)-1,2,4-oxadiazole (DAFO) with oxygen or an oxygen-containing compound to form a mixture of at least: DNFO, and ANFO.
    Type: Grant
    Filed: April 4, 2012
    Date of Patent: November 12, 2013
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Philip F. Pagoria, Mao X. Zhang
  • 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: 8545646
    Abstract: The present disclosure relates to a high-density rocket propellant and associated recoilless launching systems and methods with tungsten powder added providing substantial mass to the propellant for additional impulse, absorption of sound, optimization of back blast and carry weight, and the like. In an exemplary embodiment, the high-density rocket propellant includes tungsten mass percentages of between about 70%-about 80%, equivalent to about 17%-about 26% by volume.
    Type: Grant
    Filed: September 24, 2009
    Date of Patent: October 1, 2013
    Assignee: The United States of America as Represented by the Secretary of the Navy
    Inventors: Matthew J. Sanford, Randolph T. Johnson, Paul G. Wallman, Diana O. Bragunier, Stephen N. Stiles
  • Patent number: 8540829
    Abstract: An electrically initiated security device includes a first energetic sheet, a second energetic sheet, and a corrugated energetic sheet disposed between the first energetic sheet and the second energetic sheet. A first surface of the corrugated energetic sheet defines at least one channel and a second surface of the corrugated energetic sheet defines at least one channel. The electrically initiated security device further includes a first constituent portion disposed in the at least one channel defined by the first surface and a second constituent portion disposed in the at least one channel defined by the second surface. The first constituent portion and the second constituent portion, when mixed, comprise an energetic material.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: September 24, 2013
    Assignee: Lockheed Martin Corporation
    Inventors: Toby D. Thomas, James Horning
  • Patent number: 8518196
    Abstract: A missile includes a pyrotechnic charge. The missile is constructed in such a way that the pyrotechnic charge is made to burn deflagratively when the missile is used correctly. The pyrotechnic charge includes a mixture containing at least one metal or a metal alloy as a fuel and at least one metal oxide as an oxidizing agent. The fuel and the oxidizing agent are selected in such a manner that they can react with one another by burning. The mixture is compressed to a density of at least 85% of a theoretical density of the mixture, and the fuel, the oxidizing agent and a quantitative ratio between the fuel and the oxidizing agent are selected in such a manner that a density of the mixture is at least 6 g/cm3.
    Type: Grant
    Filed: September 10, 2010
    Date of Patent: August 27, 2013
    Assignee: Diehl BGT Defence GmbH & Co. KG
    Inventor: Arno Hahma
  • Patent number: 8512490
    Abstract: The invention provides methods for making homogeneous metal oxide nanoenergetic composites. A method of the invention forms a metal oxide nanostructure via a sol-gel process with surfactant templating. Metal nanoparticles are introduced into the metal oxide nanostructure via wet impregnation.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: August 20, 2013
    Assignee: The Curators of the University of Missouri
    Inventors: Shubhra Gangopadhyay, Daniel Tappmeyer, Andrey Bezmelnystin, Rajagopalan Thiruvengadathan, Rajesh Shende, Bhushan Mehendale, Steve Apperson, Sved Barizuddin, Keshab Gangopadhyay
  • 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: 8470107
    Abstract: A non-toxic, non-hydroscopic percussion primer composition and methods of preparing the same, including at least one explosive component that has been traditionally considered a moderately insensitive explosive or secondary explosive, and at least fuel particle component having a particle size of about 1.5 microns to about 12 microns, which allows the use of moderately active metal oxidizers. The sensitivity of the primer composition is created by the interaction between the moderately insensitive explosive and the fuel agent such that traditional primary explosives such as lead styphnate or DDNP are not needed. The primer composition also eliminates the risks and dangers associated with traditional nano-sized fuel particles.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: June 25, 2013
    Assignee: Alliant Techsystems Inc.
    Inventors: Joel Sandstrom, Aaron A. Quinn, Jack Erickson
  • Patent number: 8465608
    Abstract: A method for forming a metastable intermolecular composite (MIC) includes providing a vacuum level of <10?8 torr base pressure in a deposition chamber. A first layer of a first material of a metal that is reactive with water vapor is deposited, followed by depositing a second layer of a second material of a metal oxide on the first layer. The first and second material are capable of an exothermic chemical reaction to form at least one product, and the first and second layer are in sufficiently close physical proximity so that upon initiation of the exothermic reaction the reaction develops into a self initiating chemical reaction. An interfacial region averaging <1 nm thick is formed between the first layer and second layer from a reaction of the first material with water vapor. In one embodiment, the first material is Al and the second material is CuOx.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: June 18, 2013
    Assignee: University of Central Florida Research Foundation, Inc.
    Inventors: Kevin R. Coffey, Edward Alan Dein, Bo Yao
  • Patent number: 8460486
    Abstract: A percussion primer composition that comprises an explosive and a sensitizer, the explosive being a moderately insensitive explosive having an impact sensitivity in the range from about 0.3 kp m to about 0.75 kp m. The moderately insensitive explosive may comprise CL-20, PETN, RDX, HMX, or mixtures thereof. The sensitizer may comprise aluminum, titanium, zirconium, magnesium, melamine, styrene, lithium aluminum hydride, or mixtures thereof. In some instances, the percussion primer composition may comprise the moderately insensitive explosive precipitated onto the sensitizer. The percussion primer composition may contain an oxidizer, which in certain situations comprises a conventional oxidizer or a bismuth compound. The bismuth compound is bismuth trioxide, bismuth subnitrate, bismuth tetroxide, bismuth sulfide, or mixtures thereof. A gun cartridge and other primer-containing ordnance assemblies employing the percussion primer composition are also disclosed.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: June 11, 2013
    Assignee: Alliant Techsystems Inc.
    Inventors: Harold E. Johnston, Kristin F. Warner, Reed J. Blau, Scott K. Lusk
  • Patent number: 8454769
    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: Grant
    Filed: April 26, 2012
    Date of Patent: June 4, 2013
    Assignee: Alliant Techsystems Inc.
    Inventors: Jack Erickson, Joel L. Sandstrom, Gene Johnston, Neal Norris, Patrick Braun, Reed Blau, Lisa Spendlove Liu, Rachel Hendrika Newell
  • Patent number: 8454770
    Abstract: A percussion primer composition including at least one explosive, at least one nano-coated fuel particle having natural surface oxides thereon, at least one oxidizer, optionally at least one sensitizer, optionally at least one buffer, and to methods of preparing the same.
    Type: Grant
    Filed: May 16, 2012
    Date of Patent: June 4, 2013
    Assignee: Alliant Techsystems Inc.
    Inventors: Jack Erickson, Joel L. Sandstrom, Gene Johnston, Neal Norris, Patrick Braun, Reed Blau, Lisa Spendlove Liu
  • Patent number: 8425702
    Abstract: An ionic liquid is disclosed. A precursor composition that comprises at least one ionic liquid and at least one energetic material is also disclosed, as is a method of synthesizing an ionic liquid and a method of desensitizing an explosive composition.
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: April 23, 2013
    Assignee: Alliant Techsystems Inc.
    Inventors: Steven M. Nicolich, Alexander J. Paraskos, Daniel W. Doll, Gary K. Lund, Wendy A. Balas
  • 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: 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: 8414718
    Abstract: An energetic material composition includes a reducing material and an oxide of phosphorus. The reducing material includes a reducing metal and, in an optional hydride form, auto disperses products of the reaction by the formation of a gaseous product. The composition can be included in a cavity of a warhead. A method of neutralizing a targeted species and a method of reducing structural integrity of civil engineering structures by reacting the composition are also provided.
    Type: Grant
    Filed: August 24, 2004
    Date of Patent: April 9, 2013
    Assignee: Lockheed Martin Corporation
    Inventor: Edward W. Sheridan
  • Patent number: 8409377
    Abstract: Combustible structural composites and methods of forming same are disclosed. In an embodiment, a combustible structural composite includes combustible material comprising a fuel metal and a metal oxide. The fuel metal is present in the combustible material at a weight ratio from 1:9 to 1:1 of the fuel metal to the metal oxide. The fuel metal and the metal oxide are capable of exothermically reacting upon application of energy at or above a threshold value to support self-sustaining combustion of the combustible material within the combustible structural composite. Structural-reinforcing fibers are present in the composite at a weight ratio from 1:20 to 10:1 of the structural-reinforcing fibers to the combustible material. Other embodiments and aspects are disclosed.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: April 2, 2013
    Assignee: Battelle Energy Alliance, LLC
    Inventors: Michael A. Daniels, Ronald J. Heaps, Eric D. Steffler, W. David Swank
  • Patent number: 8409378
    Abstract: The invention relates to a lead- and barium-free ignition charge which does not contain any oxidant, and its use.
    Type: Grant
    Filed: May 23, 2007
    Date of Patent: April 2, 2013
    Assignee: Ruag Ammotec GmbH
    Inventors: Ulrich Bley, Rainer Hagel, Aleksej Hoschenko, Peter Simon Lechner, Frank Mönius
  • Patent number: 8388777
    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: January 23, 2012
    Date of Patent: March 5, 2013
    Assignee: Autoliv ASP, Inc.
    Inventors: Michael W. Barnes, Ivan V. Mendenhall, Robert D. Taylor
  • Patent number: 8382922
    Abstract: A group of tertiary amine azides are useful as hypergolic fuels for hypergolic bipropellant mixtures. The fuels provide higher density impulses than monomethyl hydrazine (MMH) but are less toxic and have lower vapor pressures that MMH. In addition, the fuels have shorter ignition delay times than dimethylaminoethylazide (DMAZ) and other potential reduced toxicity replacements for MMH.
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: February 26, 2013
    Assignee: CFD Research Corporation
    Inventor: Debasis Sengupta