Igniting Compositions Patents (Class 149/108.6)
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Patent number: 9027965Abstract: A gas generating system (24) is provided including a gas generant container (34) and an initiator (28). A gas generant composition (32) is placed within the container (34) in ignitable communication with the igniter (28). A molecular sieve (33) is positioned within the housing 17 combined within the gas generant composition (32), or external of the gas generant (32) but in reactive proximity or vapor communication therewith. A seatbelt device (150) and a vehicle occupant restraint system (180) incorporating a gas generating system as described herein are also disclosed.Type: GrantFiled: November 27, 2006Date of Patent: May 12, 2015Assignee: TK Holdings Inc.Inventor: Deborah L. Hordos
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Patent number: 8632643Abstract: Embodiments of materials suitable for use as a replacement for Tetrazene and methods of preparing such materials are described. In one embodiment, the material comprises MTX-1, as well as simple salts or complexes derived therefrom. The methods of preparing such materials include combining Tetrazene and an acid to form a suspension, where the acid is nitric acid, sulfuric acid, perchloric acid, or hydrochloric acid. A nitrite salt may be added to the suspension, where the nitrite salt is sodium nitrite, lithium nitrite, potassium nitrite, an aqueous solution of sodium nitrite, an aqueous solution of lithium nitrite, or an aqueous solution of potassium nitrite. In some embodiments, the suspension is stirred until the suspension has a white appearance.Type: GrantFiled: August 1, 2013Date of Patent: January 21, 2014Assignee: Pacific Scientific Energetic Materials CompanyInventors: John W. Fronabarger, Michael D. Williams
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Patent number: 8597445Abstract: 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: GrantFiled: February 1, 2012Date of Patent: December 3, 2013Assignee: RA Brands, L.L.C.Inventors: Donald A. Pile, Henry J. John, Jr.
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Patent number: 8551268Abstract: Improved electric primer compositions, structures, and methods that are compatible with existing munitions and in particular an exemplary electric primer composition including carbon nanotubes along with energetic primer mixture(s) and an exemplary primer structure including layers of energetic materials wherein a layer exhibiting the most energetic character is positioned proximate to a primer button. Alternative embodiments include both conductive and non-conductive layers.Type: GrantFiled: August 14, 2012Date of Patent: October 8, 2013Assignee: The United States of America as Represented by the Secretary of the ArmyInventors: Rao Yalamanchili, John Hirlinger, Christopher Csernica
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Patent number: 8524019Abstract: Embodiments of materials suitable for use as a replacement for Tetrazene and methods of preparing such materials are described. In one embodiment, the material comprises MTX-1, as well as simple salts or complexes derived therefrom. The methods of preparing such materials include combining Tetrazene and an acid to form a suspension, where the acid is nitric acid, sulfuric acid, perchloric acid, or hydrochloric acid. A nitrite salt may be added to the suspension, where the nitrite salt is sodium nitrite, lithium nitrite, potassium nitrite, an aqueous solution of sodium nitrite, an aqueous solution of lithium nitrite, or an aqueous solution of potassium nitrite. In some embodiments, the suspension is stirred until the suspension has a white appearance.Type: GrantFiled: April 21, 2011Date of Patent: September 3, 2013Assignee: Pacific Scientific Energetic Materials CompanyInventors: John W. Fronabarger, Michael D. Williams
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Patent number: 8470107Abstract: 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: GrantFiled: May 22, 2012Date of Patent: June 25, 2013Assignee: Alliant Techsystems Inc.Inventors: Joel Sandstrom, Aaron A. Quinn, Jack Erickson
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Patent number: 8460486Abstract: 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: GrantFiled: May 22, 2012Date of Patent: June 11, 2013Assignee: Alliant Techsystems Inc.Inventors: Harold E. Johnston, Kristin F. Warner, Reed J. Blau, Scott K. Lusk
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Patent number: 8454770Abstract: 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: GrantFiled: May 16, 2012Date of Patent: June 4, 2013Assignee: Alliant Techsystems Inc.Inventors: Jack Erickson, Joel L. Sandstrom, Gene Johnston, Neal Norris, Patrick Braun, Reed Blau, Lisa Spendlove Liu
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Patent number: 8454769Abstract: 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: GrantFiled: April 26, 2012Date of Patent: June 4, 2013Assignee: Alliant Techsystems Inc.Inventors: Jack Erickson, Joel L. Sandstrom, Gene Johnston, Neal Norris, Patrick Braun, Reed Blau, Lisa Spendlove Liu, Rachel Hendrika Newell
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Patent number: 8425704Abstract: Silicon-based explosive devices and methods of manufacture are provided. In this regard, a representative method involves: providing a doped silicon substrate; depositing undoped silicon on a first side of the substrate; and infusing an oxidizer into an area bounded at least in part by the undoped silicon; wherein the undoped silicon limits an exothermic reaction of the doped silicon to the bounded area. Another representative method involves: providing a doped silicon substrate; depositing a masking layer of low-pressure chemical vapor deposited (LPCVD) Silicon nitride to the first side of the substrate; patterning the nitride mask and etching the porous silicon, and infusing oxidizer into an area bounded by the LPCVD nitride; wherein the silicon nitride limits an exothermic reaction of the doped silicon to the bounded area.Type: GrantFiled: August 4, 2009Date of Patent: April 23, 2013Assignee: The United States of America as Represented by the Secretary of the ArmyInventors: Luke J. Currano, Ronald G. Polcawich, Wayne Churaman, Mark Gelak
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Patent number: 8277585Abstract: Improved electric primer compositions, structures, and methods that are compatible with existing munitions and in particular an exemplary electric primer composition including carbon nanotubes along with energetic primer mixture(s) and an exemplary primer structure including layers of energetic materials wherein a layer exhibiting the most energetic character is positioned proximate to a primer button. Alternative embodiments include both conductive and non-conductive layers.Type: GrantFiled: January 4, 2011Date of Patent: October 2, 2012Assignee: The United States of America as Represented by the Secretary of the ArmyInventors: Rao Yalamanchili, John Hirlinger, Christopher Csernica
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Patent number: 8192568Abstract: 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: GrantFiled: February 11, 2008Date of Patent: June 5, 2012Assignee: Alliant Techsystems Inc.Inventors: Jack Erickson, Joel Lee Sandstrom, Gene Johnston, Neal Norris, Patrick Braun, Reed Blau, Lisa Spendlove Liu, Rachel Hendrika Newell
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Patent number: 8172966Abstract: Non-lethal payloads may be customized for particular uses and desired visual and audible incapacitation based upon the selection of igniter/activators and illuminants used with the non-lethal payloads. Non-lethal payloads employing high flame temperature igniter/activators and illuminants of powder metals, powdered metals combined with oxidizers, and powdered metals combined with heat-activated chromophores may produce improved “flashes” and “bangs” for non-lethal payloads used with diversionary or other devices. Such devices and methods of producing illuminance and noise are also disclosed.Type: GrantFiled: March 7, 2006Date of Patent: May 8, 2012Assignee: Alliant Techsystems Inc.Inventors: Reed J. Blau, Lisa S. Liu, Ronald L. Hansen, Richard G. Ames
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Patent number: 8147627Abstract: Ignition means for propellant powders include at least one oxidation means, at least one reduction means and at least one binder, and are free from primary explosives.Type: GrantFiled: January 10, 2006Date of Patent: April 3, 2012Inventors: Klaus Redecker, Ulrich Bley, Rainer Hagel
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Publication number: 20120055594Abstract: A heat generating structure includes a substrate, a coating and a polymeric material. The substrate comprises a first material. The coating comprises a second material, different from the first material that covers at least a portion of the substrate. The coating and substrate, upon being thermally energized to their minimum alloying temperature, react in a first exothermic reaction that is an alloying reaction. The relative quantities of the substrate and coating are such that the first exothermic reaction yields a first amount of exothermic energy that is insufficient to cause self-sustained propagation of the first exothermic reaction. The polymeric material covers substantially all of the substrate and coating, and is different from the first and second materials. The polymeric layer, upon being thermally energized, reacts with at least one of the substrate and coating in a second exothermic reaction.Type: ApplicationFiled: September 8, 2010Publication date: March 8, 2012Applicant: ENSIGN-BICKFORD AEROSPACE & DEFENSE COMPANYInventors: Richard M. Kellett, David F. Irwin
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Patent number: 8128766Abstract: 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: GrantFiled: March 23, 2005Date of Patent: March 6, 2012Assignee: RA Brands, L.L.C.Inventors: Donald A. Pile, Henry J. John, Jr.
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Patent number: 8118956Abstract: A method of manufacturing a pyrotechnic time delay composition includes admixing together a solid oxidizer, a solid fuel and water to form an aqueous slurry. The slurry is transformed into droplets. The droplets are gas-dried to form particles comprising the oxidizer and the fuel, with the particles thus constituting a pyrotechnic delay composition.Type: GrantFiled: September 20, 2007Date of Patent: February 21, 2012Assignee: AEL Mining Services LimitedInventors: Clifford Gordon Morgan, Craig Rimmington
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Patent number: 8092623Abstract: An igniter composition is provided including metal fuel particles having a predetermined average diameter and metallic oxide oxidizer particles having a predetermined average diameter. The metal fuel particles are mixed substantially homogeneously with the metallic oxide oxidizer particles and, upon initiation of the igniter composition, actively participate in an exothermic reaction with the metallic oxide oxidizer particles. Also provided are methods and devices containing the igniter composition.Type: GrantFiled: April 22, 2008Date of Patent: January 10, 2012Assignee: The United States of America as represented by the Secretary of the NavyInventors: Randall J. Cramer, Magdy Bichay
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Patent number: 8057610Abstract: A gas generant for an inflatable restraint device (for example, an airbag system for a vehicle) is a monolithic compressed solid that has a linear burn rate of greater than or equal to about 1.6 inches per second at a pressure of about 3,000 pounds per square inch. The gas generant can be in the form of an annular disk having a plurality of apertures. The gas generant may be substantially free of binder and may have a low initial surface area which progressively increases during burning. The gas generant provides a gas generation profile that improves restraint of vehicle occupants, including those occupants that are out-of-position. Additionally, the shaped gas generant decreases occupant exposure to toxic effluent combustion products and solid respirable particulates.Type: GrantFiled: May 27, 2010Date of Patent: November 15, 2011Assignee: Autoliv ASP, Inc.Inventors: Brett Hussey, Ivan V. Mendenhall, Roger Bradford
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Patent number: 8057611Abstract: A multi-composition pyrotechnic material is provided for an inflatable restraint device (for example, an airbag system or pretensioner for a vehicle). The multi-composition pyrotechnic material can be a gas generant, a micro gas generant, or an igniter, for example. The multi-composition pyrotechnic material comprises a first pyrotechnic material that defines one or more void regions. A second pyrotechnic material, compositionally distinct from the first pyrotechnic material, is introduced into at least one of the void regions and forms a second region of the pyrotechnic materials. The second composition can be introduced to the void regions in the form of a slurry. Methods of forming such multi-composition pyrotechnic materials are also provided.Type: GrantFiled: August 13, 2007Date of Patent: November 15, 2011Assignee: Autoliv ASP, Inc.Inventors: Dario Brisighella, Brett Hussey
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Patent number: 8057612Abstract: A multi-composition pyrotechnic material is provided for an inflatable restraint device (for example, an airbag system or pretensioner for a vehicle). The multi-composition pyrotechnic material can be a gas generant, a micro gas generant, or an igniter, for example. The multi-composition pyrotechnic material comprises a first pyrotechnic material that defines one or more void regions. A second pyrotechnic material, compositionally distinct from the first pyrotechnic material, is introduced into at least one of the void regions and forms a second region of the pyrotechnic materials. The second composition can be introduced to the void regions in the form of a slurry. Methods of forming such multi-composition pyrotechnic materials are also provided.Type: GrantFiled: August 13, 2007Date of Patent: November 15, 2011Assignee: Autoliv ASP, Inc.Inventors: Dario Brisighella, Brett Hussey
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Patent number: 8052813Abstract: An ignition composition and its applications, the ignition composition including at least (a) an explosive fraction that includes at least one primary explosive, (b) an oxidation-reduction system and (c) an agglomerate. In the ignition composition the explosive fraction represents 9 to 35% by weight of the composition, the primary explosive at least is tetrazene, and tetrazene represents at least 95% by weight of said explosive fraction.Type: GrantFiled: February 23, 2007Date of Patent: November 8, 2011Assignee: Cheddite FranceInventor: Alain Bass
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Patent number: 8016959Abstract: The invention relates to thermal pre-ignition agents and to their use as thermal fuses, in particular for use in gas generators of motor-vehicle safety systems.Type: GrantFiled: December 7, 2004Date of Patent: September 13, 2011Assignee: Ruag Ammotec GmbHInventors: Rainer Hagel, Ulrich Bley
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Patent number: 8007608Abstract: The present invention is directed to a tracer composition for tracer bullets and other projectiles. One preferred formula of the tracer composition generally includes about 58 parts by weight of magnesium, about 38 parts by weight of polytetraflouroethylene, about 4 parts by weight of acrylic rubber, and a burn rate stabilizer such as about 1.5 parts by weight of carbon black or graphite. Tracer bullets including the tracer composition of the invention tend to exhibit a projectile path that is almost unnoticeable to the naked eye but quite visible through the use of equipment detecting energy in the near infrared range.Type: GrantFiled: October 20, 2009Date of Patent: August 30, 2011Assignee: Kilgore Flares Co., LLCInventors: David W. Herbage, Roy L. Neuhauser, Barry N. Smith
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Publication number: 20110198004Abstract: Disclosed is a gas generating polymer compound that when irradiated with light or other radiation sources makes a solid to gas phase transition due to chemically catylized degradation, irradiative degradation or both. This provides a low cost, stable and easily manufactured means of gas production. Also disclosed are possible uses for the gas generator such as a low cost micro thruster.Type: ApplicationFiled: April 25, 2011Publication date: August 18, 2011Inventors: Mark Banister, Stephen Banister
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Patent number: 7993475Abstract: A firing agent which is used in a gas generating device of a vehicle occupant protection device together with a non-azide gas generating agent, for firing the non-azide gas generating agent, wherein the firing agent contains a fuel and an oxidizing agent and is configured to burn at a combustion speed higher than that of the non-azide gas generating agent; a method for using the firing agent; and a gas generating device of a vehicle occupant protection device using the firing agent.Type: GrantFiled: November 25, 2009Date of Patent: August 9, 2011Assignee: NOF CorporationInventors: Kazuya Serizawa, Tomonori Tasaki, Katsuhiko Takahashi
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Patent number: 7976654Abstract: High explosives suitable for filling very small volume loading holes in micro-electric initiators for micro-electro-mechanical mechanisms, used as safe and arm devices, are prepared from slurries of crystalline energetic materials including organic liquid and applied using various methods. These methods include swipe loading, pressure loading and syringe loading. The organic liquid serves as a volatile mobile phase in the slurry so as to partially dissolve the energetic material so that, upon evaporation of the mobile phase, the energetic material precipitates and adheres to the loading hole.Type: GrantFiled: July 17, 2009Date of Patent: July 12, 2011Assignee: The United States of America as represented by the Secretary of the ArmyInventors: Daniel Stec, III, Gartung Cheng, Brian E. Fuchs, Gerard Gillen, Neha Mehta
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Patent number: 7942989Abstract: 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: GrantFiled: December 9, 2003Date of Patent: May 17, 2011Assignee: The Regents of the University of CaliforniaInventors: Michael J. Sailor, Frederic V. Mikulec, Joseph D. Kirtland
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Patent number: 7883593Abstract: A novel pyrotechnic delay composition for use in metal delay fuse cartridges, including as its primary constituent Si—Al—Fe3O4 prepared from powdered form. The delay composition yields a progressive burning zone and burns substantially gas-free, is safe to handle, is resistant to moisture and degradation over time, can be incorporated within the confines of existing detonator shells, and poses no environmental hazards.Type: GrantFiled: November 26, 2008Date of Patent: February 8, 2011Assignee: The United States of America as represented by the Secretary of the NavyInventors: James E. Rose, Magdy Michay, Jan Puszynski
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Publication number: 20110011502Abstract: An improved priming mix of the type including an initiator, fuel, and oxidizer, and pyrotechnic component. The improvement being the inclusion of between about 3% and about 20% propellant superfines, the superfines comprising particles less than 100 ?m.Type: ApplicationFiled: April 9, 2010Publication date: January 20, 2011Inventors: George C. Mei, Duane E. Lowe
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Publication number: 20100300319Abstract: A primer composition with reduced toxicity suited for reduced-energy ammunition comprises bismuth (III) oxide as the principal oxidizer and contains a portion of propellant composition mixed therein. This composition may also be used in a cartridge which is otherwise substantially free of any other propellant compound and preferably produces a residue which is substantially free of toxic substances.Type: ApplicationFiled: December 23, 2008Publication date: December 2, 2010Inventor: Louise Guindon
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Patent number: 7837813Abstract: Stone Wales defect pairs in a carbon nanostructure are used to store energy. Energy is released by a chain reaction of phonons disrupting the defect pairs to generate more phonons until the lattice returns to its original hexagonal form and the energy is released in the form of lattice vibrations. Devices may be configured as a battery to release electrical energy in a controlled manner or as an explosive to release energy in an uncontrolled manner.Type: GrantFiled: May 28, 2009Date of Patent: November 23, 2010Assignee: Raytheon CompanyInventors: Delmar L. Barker, William R. Owens
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Publication number: 20100212788Abstract: Pyrotechnic priming charge (1) intended to be used preferably for starting up one or more ignition chains, comprising a coherent porous fuel structure (2) and at least one oxidizer (4). According to the invention, the primer also comprises a moisture inhibitor (5) applied to the surface of the primer with a view to increasing the safety of the primer and reducing the risk of unintentional ignition due to breakdown of the oxidizer under the influence of ambient moisture and temperature.Type: ApplicationFiled: May 30, 2008Publication date: August 26, 2010Applicant: BAE Systems Bofors ABInventor: Stefan Röstlund
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Publication number: 20100116385Abstract: A sensitized explosive that comprises an explosive precipitated onto a sensitizer. The explosive is CL-20, PETN, RDX, HMX, or mixtures thereof and the sensitizer is aluminum, titanium, zirconium, magnesium, melamine, styrene, lithium aluminum hydride, or mixtures thereof. The sensitized explosive is used in a percussion primer that includes a bismuth compound and a melt binder. The bismuth compound is bismuth oxide, bismuth subnitrate, bismuth tetroxide, bismuth sulfide, or mixtures thereof and the melt binder is a wax having a melting point above ambient temperature, trinitrotoluene, poly(3,3-bis(azidomethyl)oxetane), poly(3-azidomethyl-3-methyloxetane), ethyl-3,5-dinitrobenzoate, or mixtures thereof. A gun cartridge and other primer-containing ordnance assemblies employing the percussion primer are also disclosed. Methods of forming the sensitized explosive and the percussion primer are also disclosed.Type: ApplicationFiled: September 14, 2009Publication date: May 13, 2010Applicant: ALLIANT TECHSYSTEMS INC.Inventors: Harold E. Johnston, Kirstin F. Warner, Reed J. Blau, Scott K. Lusk
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Patent number: 7670446Abstract: A method is disclosed for preparing metastable nanoenergetic composites (MNC) and for wet loading those MNCs into percussion primer cups. The method involves dispersing nanosize reactants in an inert liquid or, alternatively, making a nanosize reactant surface modification for improvement of reactant's chemical inertness towards water, followed by application of additives supporting a solid reactant particle dispersion in water or water solution prior to mixing. After mixing of the reactants, one maintains the presence of liquid water together within an energetic material in order to enhance safety during pre-loading of the primer mixture into the primer cups and during the final drying.Type: GrantFiled: April 19, 2005Date of Patent: March 2, 2010Assignee: The United States of America as represented by the Secretary of the NavyInventors: Jan A. Puszynski, Magdy M. Bichay, Jacek J. Swiatkiewicz
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Patent number: 7648602Abstract: A method for chemically neutralizing a nitroarene explosive uses a nitroarene hypergol having an ?,?-amine and an accelerant that is applied to the explosive composition to cause ignition of the explosive composition. The method may be used to neutralize active mines.Type: GrantFiled: December 15, 2006Date of Patent: January 19, 2010Assignee: The United States of America as represented by the Secretary of the NavyInventors: William M. Koppes, David M. Rosenberg, Kerry A. Clark, Eric S. Schlegel, Brian W. Vos, Jody W. Lang, Andrea D. Warren
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Publication number: 20090236018Abstract: Disclosed is a gas generating polymer compound that when irradiated with light or other radiation sources makes a solid to gas phase transition due to chemically catylized degradation, irradiative degradation or both. This provides a low cost, stable and easily manufactured means. of gas production. Also disclosed are possible uses for the gas generator such as a low cost micro thruster.Type: ApplicationFiled: March 30, 2009Publication date: September 24, 2009Inventors: Mark Banister, Stephen Banister
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Publication number: 20090044886Abstract: A multi-composition pyrotechnic material is provided for an inflatable restraint device (for example, an airbag system or pretensioner for a vehicle). The multi-composition pyrotechnic material can be a gas generant, a micro gas generant, or an igniter, for example. The multi-composition pyrotechnic material comprises a first pyrotechnic material that defines one or more void regions. A second pyrotechnic material, compositionally distinct from the first pyrotechnic material, is introduced into at least one of the void regions and forms a second region of the pyrotechnic materials. The second composition can be introduced to the void regions in the form of a slurry. Methods of forming such multi-composition pyrotechnic materials are also provided.Type: ApplicationFiled: August 13, 2007Publication date: February 19, 2009Applicant: AUTOLIV ASP, INC.Inventors: Dario BRISIGHELLA, Brett HUSSEY
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Patent number: 7441503Abstract: An expendable infra-red radiating means having a rupturable container 1 housing a plurality of decoy plates (11) and an ignition means (17) for igniting the decoy plates (11). Each of the decoy plates (11) comprises a composition of a metal and an oxidant capable of an exothermic combustion reaction upon ignition which produces negligible quantities of radiation in the visible or ultra-violet regions and which results, after the combustion reaction is completed, in the decoy plates (11) containing hot metal emitting infra-red radiation.Type: GrantFiled: June 9, 1997Date of Patent: October 28, 2008Assignee: The Secretary of State for Defence in Her Brittanic Majesty's Government of the United Kingdom of Great Britain and Northern IrelandInventor: James D. Callaway
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Patent number: 6941868Abstract: A single increment initiator charge for use in an inflatable restraint system and a method of preparing the single increment initiator charge are provided. The single increment initiator charge includes a homogeneous blend of zirconium, an oxidizer such as potassium perchlorate, and a combustion enhancer such as titanium hydride in an amount effective to result in the single increment initiator charge being effective to ignite an associated pyrotechnic charge. The single increment initiator charge may be formed by preparing a homogeneous blend such as by dry-blending the constituents or by mixing the constituents with a solvent such as an alcohol to form a slurry, loading the homogeneous blend into a charge holder and compressing the homogeneous blend.Type: GrantFiled: June 26, 2003Date of Patent: September 13, 2005Assignee: Autoliv ASP, Inc.Inventor: John Herget
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Patent number: 6878221Abstract: The present invention is directed to a lead-free, nontoxic pyrotechnic composition, comprising: 30-80 wt % of bismuth subnitrate; and 10-50 wt % of a fuel, wherein all weight percents are based on the total weight of the composition. The present invention is also directed to a lead-free, nontoxic priming composition, comprising: 20-80 wt % of the above nontoxic pyrotechnic composition; 20-50 wt % of an initiator explosive; and 2-10 wt % of a sensitizer, wherein all weight percents are based on the total weight of the composition.Type: GrantFiled: June 16, 2003Date of Patent: April 12, 2005Assignee: Olin CorporationInventors: George C. Mei, James W. Pickett
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Patent number: 6843869Abstract: A porous igniter body and a method of making the same are provided wherein a blowing agent component including at least one thermally decomposable blowing agent solid is mixed with at least one igniter fuel and at least one igniter oxidizer to form an igniter body precursor. The igniter body precursor is subsequently subjected to a temperature sufficient to decompose at least a portion of the blowing agent to form the porous igniter body.Type: GrantFiled: December 6, 2002Date of Patent: January 18, 2005Assignee: Autoliv ASP, Inc.Inventors: Ivan V. Mendenhall, Robert G. Smith
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Patent number: 6841015Abstract: A high temperature combination delay element and ignition composition contains a polymeric silicone component, an oxidizer component and a high temperature metal component.Type: GrantFiled: October 9, 2003Date of Patent: January 11, 2005Assignee: The United States of America as represented by the Secretary of the NavyInventor: James J. Baker
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Patent number: 6786986Abstract: This disclosure considers the use of specifically-sized Nitrocellulose particles of 75 ml fineness, free of other chemicals, as a flame enhancer in a Diazodinitrophenol primer mixture that is free of heavy metal constituents.Type: GrantFiled: April 14, 2003Date of Patent: September 7, 2004Assignee: Companhia Brasileira de CartuchosInventor: Laudemiro Martini Filho
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Patent number: 6783616Abstract: The invention relates to pyrotechnic primer charges produced on the basis of metal powders or metal hydride powders, potassium perchlorate and binders. In order to obtain a homogenous mixture, the powdery components are mixed with a liquid dispersing agent in a suspension with the aid of ultrasound and dosed having said consistency. Mixing for obtaining a suspension can also be carried out directly in a casing receiving the pyrotechnic primer charges.Type: GrantFiled: November 28, 2000Date of Patent: August 31, 2004Assignee: Nico-Pyrotechnik Hanns Juergen Diederichs GmbH & Co. KGInventors: Uwe Krone, Dirk Cegiel
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Publication number: 20040140027Abstract: The invention relates to igniting agents, which contain soluble, preferably water-soluble igniting substances.Type: ApplicationFiled: January 15, 2004Publication date: July 22, 2004Inventors: Rainer Hagel, Ulrich Bley
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Patent number: 6695938Abstract: The reduced toxicity hypergolic bipropellant fuels of the present invention contain a hypergolic fuel and rocket grade hydrogen peroxide oxidizer, preferably HTP. The hypergolic fuel may be a reactive fuel or a catalytic fuel. The rocket grade hydrogen peroxide oxidizer consists of about 90 weight % to about 99 weight % H2O2, more preferably about 94 weight % to 99 weight % H2O2. However, hypergolic ignition may be attained with a H2O2 content as low as 70 weight % for some reactive fuels. The reactive fuel comprises about 6 weight % to 10 weight % reducing agent in a solvent. The catalytic fuel comprises about 6 weight % to 10 weight % catalytic agent in a solvent. The reactive fuels contain ingredients that are intrinsically reactive with rocket grade hydrogen peroxide. Upon contact with rocket grade hydrogen peroxide oxidizer, reactive fuels react vigorously with the hydrogen peroxide resulting in ignition. The catalytic fuels are produced by dissolving a catalytic agent in a solvent.Type: GrantFiled: April 12, 2002Date of Patent: February 24, 2004Assignee: The United States of America as represented by the Secretary of the NavyInventor: Amos Diede
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Patent number: 6651563Abstract: An ignition element consists of a combination of first and second ignition components. The first ignition component contains at least one primer, at least on heat-conducting additive selected from the group consisting of zirconium, aluminum, titanium, ferrotitanium, zirconium boride, zirconium hydride and mixtures thereof, at least one oxidant and a binder. The second ignition component contains at least one ingredient that produces hot re4action particles, an oxidant, and a binder.Type: GrantFiled: May 20, 2002Date of Patent: November 25, 2003Assignee: Dynamit Nobel ArtiengesellschaftInventors: Gunther Faber, Helmut Zollner
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Patent number: 6645326Abstract: The autoignition compositions of the present invention ignites in the temperature range of 120° C. to 160° C. The autoignition compositions are thermally stable at 107° C. for 400 hours and are thermally stable during thermal cycling. The preferred composition for the autoignition composition comprises equal weight percentages of the following chemicals: nitroguanidine, Sb2S3, and AgNO3. An ignition temperature adjuster selected from the group consisting of teflon powder, graphite powder, ammonium perchlorate, MoS2, and FeS can be added to the preferred autoignition composition.Type: GrantFiled: March 25, 2002Date of Patent: November 11, 2003Assignee: Breed Automotive Technology, Inc.Inventors: J B Canterberry, Cezary Grzelczyk
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Publication number: 20030192633Abstract: The reduced toxicity hypergolic bipropellant fuels of the present invention contain a hypergolic fuel and rocket grade hydrogen peroxide oxidizer, preferably HTP. The hypergolic fuel may be a reactive fuel or a catalytic fuel. The rocket grade hydrogen peroxide oxidizer consists of about 90 weight % to about 99 weight % H2O2, more preferably about 94 weight % to 99 weight % H2O2. However, hypergolic ignition may be attained with a H2O2 content as low as 70 weight % for some reactive fuels. The reactive fuel comprises about 6 weight % to 10 weight % reducing agent in a solvent. The catalytic fuel comprises about 6 weight % to 10 weight % catalytic agent in a solvent. The reactive fuels contain ingredients that are intrinsically reactive with rocket grade hydrogen peroxide. Upon contact with rocket grade hydrogen peroxide oxidizer, reactive fuels react vigorously with the hydrogen peroxide resulting in ignition. The catalytic fuels are produced by dissolving a catalytic agent in a solvent.Type: ApplicationFiled: April 12, 2002Publication date: October 16, 2003Inventor: Amos Diede