With Nitrated Organic Compound Patents (Class 149/38)
  • Patent number: 9469573
    Abstract: This invention relates to a method of manufacturing a salt-coated heat paper, including preparing a powder mixture by mixing a fuel powder with an oxidant powder; preparing a slurry by adding an organic coagulant, after mixing the powder mixture with glass fibers; obtaining a heat paper by a papermaking process utilizing the slurry; primarily drying the heat paper by pressing; coating the heat paper with a salt solution; and secondarily drying the heat paper.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: October 18, 2016
    Assignee: AGENCY FOR DEFENSE DEVELOPMENT
    Inventors: Chaenam Im, Jungmin Lee, Seungho Kang, Haewon Cheong
  • Publication number: 20150096653
    Abstract: An autoignition composition for a gas generant for an airbag or the like. The autoignition comprises a mixture of CuO as the oxidizer in a weight percentage of 45% to 75%, and aminoguanidine nitrate as the fuel in a weight percentage of 25% to 55%. To increase the flame temperature of the mixture, a metal fuel such as magnesium or aluminum can be added.
    Type: Application
    Filed: October 4, 2013
    Publication date: April 9, 2015
    Applicant: ARC AUTOMOTIVE
    Inventors: James Michael ROSE, Russell Klaus Campbell
  • Publication number: 20140116584
    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: Application
    Filed: May 9, 2012
    Publication date: May 1, 2014
    Applicant: HERAKLES
    Inventors: Frédéric Marlin, Stéphane Besombes
  • 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: 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: 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: 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: 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: 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
  • Publication number: 20120227874
    Abstract: A percussion primer composition including at least one explosive, at least fuel particle having a particle size of about 1500 nm or less, at least one oxidizer, optionally at least one sensitizer, optionally at least one buffer, and to methods of preparing the same.
    Type: Application
    Filed: April 26, 2012
    Publication date: September 13, 2012
    Inventors: Jack Erickson, Joel Lee Sandstrom, Gene Johnston, Neal Norris, Patrick Braun, Reed Blau, Lisa Spendlove Liu, Rachel Hendrika Newell
  • Patent number: 8206522
    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: March 31, 2010
    Date of Patent: June 26, 2012
    Assignee: Alliant Techsystems Inc.
    Inventors: Joel Sandstrom, Aaron A Quinn, Jack Erickson
  • Patent number: 8186995
    Abstract: A fire-starter device for survival or emergency use has a handle portion and case portion that twist together, to sheath a mischmetal flint rod inside the case, and a seal ring protects the flint rod from environmental moisture. The case has a steel strike plate and a guide channel. The mischmetal flint rod favorably has a composition of cerium—50%, lanthanum—26%, magnesium—10%, praseodymium—3%, neodymium—1%, and iron—10%.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: May 29, 2012
    Inventor: Andrew C. Putrello, Jr.
  • Patent number: 8052813
    Abstract: 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: Grant
    Filed: February 23, 2007
    Date of Patent: November 8, 2011
    Assignee: Cheddite France
    Inventor: Alain Bass
  • Publication number: 20110240186
    Abstract: A lead-free electric primer composition including a mixture of at least one metal having nanometer-sized particles with at least one oxidizer having nanometer-sized particles producing a metal(s)-oxidizer(s) nanocomposite, wherein the oxidizer(s) is present in an effective amount to substantially oxidize the metal(s), at least one gas generating material mixed with the metal(s)-oxidizer(s) nanocomposite producing a metal(s)-oxidizer(s)-gas generator(s) composition, at least one binder, the metal(s)-oxidizer(s)-gas generating composition is coated with the binder, and at least one conductive material.
    Type: Application
    Filed: March 31, 2008
    Publication date: October 6, 2011
    Inventors: Kelvin T. Higa, Steve Son, Tom Doris, Stephen Fallis
  • Publication number: 20110240185
    Abstract: A lead-free electric primer composition including a mixture of at least one metal having nanometer-sized particles with at least one oxidizer having nanometer-sized particles producing a metal(s)-oxidizer(s) nanocomposite, wherein the oxidizer(s) is present in an effective amount to substantially oxidize the metal(s), at least one gas generating material mixed with the metal(s)-oxidizer(s) nanocomposite producing a metal(s)-oxidizer(s)-gas generator(s) composition, at least one binder, the metal(s)-oxidizer(s)-gas generating composition is coated with the binder, and at least one conductive material.
    Type: Application
    Filed: May 19, 2008
    Publication date: October 6, 2011
    Inventors: Kelvin T. Higa, Steve Son, Tom Doris, Stephen Fallis
  • Publication number: 20110168047
    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: Application
    Filed: September 10, 2010
    Publication date: July 14, 2011
    Applicant: DIEHL BGT DEFENCE GMBH & CO. KG
    Inventor: ARNO HAHMA
  • Patent number: 7784403
    Abstract: The invention relates to an energetic igniter charge consisting of a mixture of at least one secondary explosive and an optical doping material in powder form. In accordance with the invention, the optical doping material is a metal. The energetic igniter charge can be used in a detonator as well as in an igniter.
    Type: Grant
    Filed: July 5, 2006
    Date of Patent: August 31, 2010
    Assignee: Deutsch-Franzosisches Forschungsinstitut
    Inventors: Henry Moulard, Auguste Ritter, Jean-Marie Brodbeck
  • Patent number: 7754036
    Abstract: A pressable explosive composition is provided. The composition includes at least 40 weight percent of substantially uncoated fuel particles, a nitramine mechanically blended with the substantially uncoated fuel particles, and a binder coating the nitramine. The binder constitutes about 1 to about 6 weight percent of the pressable explosive composition. Also provided are a pressed thermobaric explosive, weapons containing the pressed thermobaric explosive, and methods for making the composition and thermobaric explosive.
    Type: Grant
    Filed: December 3, 2003
    Date of Patent: July 13, 2010
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Kirk E. Newman, Virgil Riffe, Steven L. Jones, Mark D. Lowell
  • Patent number: 7727347
    Abstract: A pressable explosive composition is provided. The composition includes at least 40 weight percent of substantially uncoated fuel particles, a nitramine mechanically blended with the substantially uncoated fuel particles, and a binder coating the nitramine. The binder constitutes about 1 to about 6 weight percent of the pressable explosive composition. Also provided are a pressed thermobaric explosive, weapons containing the pressed thermobaric explosive, and methods for making the composition and thermobaric explosive.
    Type: Grant
    Filed: January 18, 2006
    Date of Patent: June 1, 2010
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Kirk E. Newman, Virgil Riffe, Steven L. Jones, Mark D. Lowell
  • Publication number: 20080229963
    Abstract: A reactive material that includes at least one of a fuel, an oxidizer, and a class 1.1 explosive and is formulated for use in a reactive material projectile. The reactive material is formulated to provide at least one of an overpressure of greater than approximately 9 pounds per square inch at a radial measurement of 12 inches from a point of impact on a target, a hole greater than approximately 2 square inches at an optimum penetration level in a target, and pressure, damage, and a flame when the reactive material bullet impacts a target. The fuel may be a metal, a fusible metal alloy, an organic fuel, or mixtures thereof. The oxidizer may be an inorganic oxidizer, sulfur, a fluoropolymer, or mixtures thereof. A reactive material projectile having the reactive material disposed therein is also disclosed.
    Type: Application
    Filed: May 27, 2008
    Publication date: September 25, 2008
    Applicant: ALLIANT TECHSYSTEMS INC.
    Inventors: Daniel B. Nielson, Benjamin N. Ashcroft, Daniel W. Doll
  • Patent number: 7393423
    Abstract: A chemical reaction between molten aluminum and an oxygen carrier such as water to do useful work is disclosed, and in particular two chemical methods to obtain aluminum in its molten state. One is to detonate a HE/Al mixture with surplus Al in stoichiometry, and the other is to use an oxidizer/Al mixture with surplus Al in stoichiometry. Additionally, there is a physical method of shocking and heating Al using high temperature reaction products. The produced Al in its liquid form is forced to react with an oxygen carrying liquid (e.g. water), giving off heat and releasing hydrogen gas or other gaseous material. A water solution of some oxygen-rich chemicals (e.g. ammonium nitrate) can be advantageously used in place of water. A shaped charge is also disclosed having a liner that contains aluminum, propelled by a high explosive such as RDX or its mixture with aluminum powder.
    Type: Grant
    Filed: August 8, 2001
    Date of Patent: July 1, 2008
    Assignee: Geodynamics, Inc.
    Inventor: Liqing Liu
  • Patent number: 6997998
    Abstract: The subject of the present invention is lead- and barium-free propellant charges with primary explosives mixed with oxygen-supplying substances, characterized in that the primary explosives are selected from alkali metal and/or alkaline earth metal salts of dinitrobenzofuroxanes and the oxygen-supplying substances are chosen from metal peroxides, nitrates of ammonium, guanidine, aminoguanidine, triaminoguanidine, dicyanodiamidine, and the elements sodium, potassium, magnesium, calcium, cerium, and/or multivalent metal oxides. The propellant charges according to the invention exhibit increased stability with respect to known propellant charges that are free of harmful substances.
    Type: Grant
    Filed: January 8, 2004
    Date of Patent: February 14, 2006
    Assignee: Dynamit Nobel GmbH Explosivstoff-und Systemtechnik
    Inventors: Rainer Hagel, Klaus Redecker
  • Patent number: 6786986
    Abstract: 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: Grant
    Filed: April 14, 2003
    Date of Patent: September 7, 2004
    Assignee: Companhia Brasileira de Cartuchos
    Inventor: Laudemiro Martini Filho
  • Patent number: 6749702
    Abstract: The present invention relates to a low temperature autoignition composition for safely initiating combustion of a main pyrotechnic charge in a gas generator or pyrotechnic device exposed to flame or a high temperature environment.
    Type: Grant
    Filed: January 22, 1998
    Date of Patent: June 15, 2004
    Assignee: Talley Defense Systems, Inc.
    Inventors: Gregory D. Knowlton, Christopher P. Ludwig
  • Publication number: 20040025991
    Abstract: Gas generants in an inflator have nitroguanidine as a fuel and mica as a slagging agent. A gas generant with nitroguanidine has many desirable properties such as little hygroscopicity, a high conversion efficiency, and a suitable burn rate.
    Type: Application
    Filed: August 7, 2002
    Publication date: February 12, 2004
    Inventors: JB Canterberry, Edward O. Hosey
  • Publication number: 20040000362
    Abstract: The present invention provides a gas generant composition comprising a nitrogen-containing organic compound, an oxidizing agent and an additive, wherein a calorific value per mol of gas generated by the combustion of the gas generant is not more than 125KJ. Also, the present invention provides a gas generator using the said gas generant composition of the present invention.
    Type: Application
    Filed: April 9, 2003
    Publication date: January 1, 2004
    Inventors: Eishi Sato, Dairi Kubo, Kenjiro Ikeda
  • Patent number: 6599379
    Abstract: A low-smoke pyrotechnic composition comprising nitrocellulose; nitroguanidine; an oxidizing agent; and, at least one of a flame coloring agent and metal powder, and a method of processing the same is disclosed.
    Type: Grant
    Filed: April 12, 2001
    Date of Patent: July 29, 2003
    Assignee: DMD Systems, LLC
    Inventors: Michael A. Hiskey, Darren L. Naud
  • Patent number: 6599380
    Abstract: The invention relates to an igniter composition for use in a gas generator for a safety means in vehicles. The igniter composition consists of a gas-generating composition in an amount of 15 to 70 wt-% and of a thermite composition in an amount of 30 to 85 wt-%. The gas-generating composition consists essentially of a guanidine compound as fuel and an inorganic oxidizer. The thermite composition consisting essentially of a metal and a metal oxide. The igniter composition or the gas-generating composition and the thermite composition, each for itself, have an oxygen balance of between 0 and −20%.
    Type: Grant
    Filed: June 6, 2001
    Date of Patent: July 29, 2003
    Assignee: TRW Airbag Systems GmbH & Co. KG
    Inventors: Siegfried Zeuner, Achim Hofmann, Roland Schropp, Karl-Heinz Rödig
  • Patent number: 6592778
    Abstract: The invention relates to a method for producing propellant compacts for use in gas generators for safety devices in motor vehicles by extrusion, comprising the following steps: mixing the constituents of the propellant and stirring the mixture into a paste with a solvent so as to form a plasticizable mass, extruding the plasticizable mass in order to form propellant compacts, and drying the propellant compacts in order to remove the solvent, a thickening agent which increases the viscosity being added to the solvent prior to pasting in a proportion of from 0.1 to 10% by weight, relative to the solvent, and the dried propellant compacts having a density of at least 70% of the theoretical density. The invention further relates to propellant compacts obtainable in accordance with this method.
    Type: Grant
    Filed: March 2, 2001
    Date of Patent: July 15, 2003
    Assignee: TRW Airbag Systems GmbH & Co. KG
    Inventors: Siegfried Zeuner, Achim Hofmann, Roland Schropp, Karl-Heinz Rödig
  • Patent number: 6562160
    Abstract: The present invention is a propellant used to inflate an airbag in vehicle safety systems comprising from about 70 weight percent to about 82 weight percent Cyclotrimethylenetrinitramine (RDX), from about 10 weight percent to about 15 weight percent of a polymer binder, from about 6 weight percent to about 9 weight percent of an inert plasticizer, from about 2 weight percent to about 4 weight percent of Hydroxypropyl Cellulose, from about 0.5 weight percent to about 1 weight percent of a polymeric processing aid; and, from about 0.3 weight percent to about 0.5 weight percent of a material that acts as a stabilizer and anti-oxidant. The present invention is designed to have a long shelf life, high resistance to performance degradation after thermal aging testing and excellent physical properties such as excellent strength, insensitivity, and safety.
    Type: Grant
    Filed: April 10, 2001
    Date of Patent: May 13, 2003
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Christine M. Walsh
  • Patent number: 6544363
    Abstract: A non-toxic heavy-metal-free priming mix and a method of forming same, designed especially for industrial shotshells and other shotshells having abnormally heavy charges of propellant in an effort to qualify for heavy duty assignments such as the need to break up cement which has set up within a cement kiln and impedes the operation of the kiln. The mix is characterized by the inclusion of a secondary highly shock-sensitive explosive, PETN, in unusually large amounts such as 13-17% by weight of the mix as well as equally large amounts of powdered aluminum, as a fuel. This combination, supported by potassium nitrate and ferric oxide as primary and secondary oxidizers, respectively, proves to be highly effective. Each of the components, namely DDNP, PETN, tetracene, glass, powdered aluminum, potassium nitrate, ferric oxide, and gum tragacanth is non-toxic and heavy-metal-free.
    Type: Grant
    Filed: October 30, 2000
    Date of Patent: April 8, 2003
    Assignee: Federal Cartridge Company
    Inventor: Jack A. Erickson
  • Patent number: 6478903
    Abstract: A non-toxic primer mix including both bismuth sulfide and potassium nitrate as the pyrotechnic portion of the primer is disclosed. In a further embodiment, a non-toxic primer mix comprising zinc sulfide and aluminum nitrate as the pyrotechnic portion of the primer mix is disposed. Bismuth and zinc sulfide act as fuels for the oxidizers of potassium and aluminum nitrate in providing an ignition flame for the primer. The non-toxic primer mix further contains a lead-free explosive material, and additionally can include added fuels, sensitizers, explosives and binders.
    Type: Grant
    Filed: October 6, 2000
    Date of Patent: November 12, 2002
    Assignee: RA Brands, LLC
    Inventors: Henry J. John, Jr., Carolyn Yeager, Don Pile, Tim Webb
  • Publication number: 20020148542
    Abstract: Gas generant compositions and methods of gas generation are provided whereby desired gas generation can be realized without requiring the presence and use a charge or coating of an associated igniter composition.
    Type: Application
    Filed: April 7, 2000
    Publication date: October 17, 2002
    Inventors: Robert D. Taylor, Ivan V. Mendenhall, David W. Parkinson
  • Patent number: 6453816
    Abstract: A temperature fuse for gas-generating mixtures consists of substances or mixtures of substances that have lower detonation points or decomposition points than the gas-generating mixture. In particular, the temperature fuse contains substances or mixtures of substances that thermally decompose exothermically in a narrowly restricted temperature range. The evolution of heat that results ignites the gas-generating mixture.
    Type: Grant
    Filed: April 17, 2001
    Date of Patent: September 24, 2002
    Assignee: Dynamit Nobel GmbH Explosivstoff-und Systemtechnik
    Inventors: Klaus Redecker, Waldemar Weuter, Ulrich Bley, Dagmar Schmittner
  • Patent number: 6302979
    Abstract: A gas generant is provided which decreases toxic components, in particular carbon monoxide and nitrogen oxides, in generated gas to a concentration practical as an air bag system for automobile. A nitrogen-containing organic compound such as a compound containing amino group or amido group or a tetrazole derivative and a oxygen-containing inorganic oxidizer such as KNO3, Sr(NO3)2 or KClO4 are essential components. Therewith one or more metal oxides are contained in the mixed catalyst of the gas generant composition. The oxide is selected from manganese dioxide having a specific surface area not less than 50 m2/g; copper oxide having a specific surface area not less than 1 m2/g; molybdenum oxides such as molybdenum dioxide, molybdenum trioxide, molybdic acid and ammonium molybdate: and copper oxides, cobalt oxides, iron oxides and silver oxides.
    Type: Grant
    Filed: November 23, 1999
    Date of Patent: October 16, 2001
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Kazuyuki Matsuoka, Shogo Tomiyama
  • Patent number: 6221187
    Abstract: The present invention relates to a low temperature autoignition composition for safely initiating combustion of a main pyrotechnic charge in a gas generator or pyrotechnic device exposed to flame or a high temperature environment.
    Type: Grant
    Filed: January 21, 1999
    Date of Patent: April 24, 2001
    Assignee: Talley Defense Systems, Inc.
    Inventors: Gregory D. Knowlton, Christopher P. Ludwig
  • Patent number: 6136224
    Abstract: A gas generant for an air, which is improved in the defects of gas generants using sodium azide in a practical use and has stable combustion capability. And a molecular compound comprising (a) a gas generant component, (b) an oxidant component and (c) a reaction accelerator component, preferably represented by the composition formula (I).M.mX.nY (I)[wherein, M is Al Mg, Ca, Cr, Cu, Zn, Mn, Fe, Co, Sr, Ni and another metal components; X is a nitrogen-containing compound having 0 or 1 carbon atom; Y is an anion such as NO.sub.3 and ClO; m is a number of 1 to 3; and n is a number 2 to 3].
    Type: Grant
    Filed: August 28, 1996
    Date of Patent: October 24, 2000
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Jianzhou Wu, Norimasa Hirata, Takushi Yokoyama
  • Patent number: 6132480
    Abstract: An igniter composition for a gas generant and related methods of gas generation are provided in which, in addition to a boron fuel component and an oxidizer component, the igniter composition additionally includes a gas-producing fuel component.
    Type: Grant
    Filed: April 22, 1999
    Date of Patent: October 17, 2000
    Assignee: Autoliv ASP, Inc.
    Inventors: Michael W. Barnes, Kristy Woodward Swanson, Christopher Hock
  • Patent number: 6103029
    Abstract: Polyethers containing pendant azide groups are cured without a catalyst by yclo-addition with diacetylenes to form triazole cross-linked, energetic binders having improved mechanical properties and stability. The polyethers typically have three hydroxy-terminated chains each of about 5000 to about 50,000 daltons. Ideally, only one azide group per chain reacts by cyclo-addition since the diacetylene is added in a proportion of about one molecule to each two polyether chains. Repeating units of glycidal azide, azidomethylmethyloxetane, bis-azidomethyloxetane/nitratomethylmethyloxetane, and bis-azidomethyloxetane/azidomethylmethyloxetane are believed effective as polyethers when used with the diethynlbenzenes 1,4-bis(ethynl)benzene, 1,4-bis(ethynlcarbonyl)benzene, and 1,3-bis(cyanoethynl)benzene. The polyethers may be further cross-liked at the hydroxyl terminations by urethane bonds.
    Type: Grant
    Filed: June 23, 1997
    Date of Patent: August 15, 2000
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Russell Reed, Jr.
  • Patent number: 6073962
    Abstract: The present invention is directed to an airbag system that includes a gas generant, which is improved in the defects of gas generants using sodium azide in a practical use and has stable combustion capability. A molecular compound comprising (a) a gas generant component, (b) an oxidant component and (c) a reaction accelerator component, preferably represented by the composition formula (I).M.mX.
    Type: Grant
    Filed: October 20, 1997
    Date of Patent: June 13, 2000
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Jianzhou Wu, Norimasa Hirata, Takushi Yokoyama
  • Patent number: 5962808
    Abstract: Nonazide gas generant compositions, useful for inflating passenger restraint gas inflator bags, comprise a multimetallic coordination complex oxidizer selected from coordination complexes comprised of anionic nitro and nitrito ligands coordinated with a transitional metal template, and a cationic component comprised of two or more different metals. The gas generant compositions generate relatively more gas and are significantly less toxic than known azide gas generant compositions, and furthermore, generate solids that are readily filterable.
    Type: Grant
    Filed: March 5, 1997
    Date of Patent: October 5, 1999
    Assignee: Automotive Systems Laboratory, Inc.
    Inventor: Norman H. Lundstrom
  • Patent number: 5959242
    Abstract: The present invention relates to an autoignition composition for safely initiating combustion of a main pyrotechnic charge in a gas generator or pyrotechnic device exposed to flame or a high temperature environment. The autoignition compositions of the invention include a mixture of an oxidizer composition and a powdered metal, wherein the oxidizer composition includes at least one of an alkali metal or an alkaline earth metal nitrate, a complex salt nitrate, such as Ce(NH.sub.4).sub.2 (NO.sub.3).sub.6 or ZrO(NO.sub.3).sub.2, a dried, hydrated nitrate, such as Ca(NO.sub.3).sub.2.4H.sub.2 O or Cu(NO.sub.3).sub.2.2.5 H.sub.2 O, silver nitrate, an alkali or alkaline earth chlorate, an alkali or alkaline earth metal perchlorate, ammonium perchlorate, a nitrite of sodium, potassium, or silver, or a solid organic nitrate, nitrite, or amine, such as guanidine nitrate, nitroguanidine and 5-aminotetrazole, respectively.
    Type: Grant
    Filed: May 14, 1996
    Date of Patent: September 28, 1999
    Assignee: Talley Defense Systems, Inc.
    Inventors: Gregory D. Knowlton, Christopher P. Ludwig
  • Patent number: 5684268
    Abstract: A lead-free primer mix based on diazodinitrophenol, tetrazene, nitrocellulose, barium nitrate and at least one of PETN, aluminum and antimony sulfide exhibits performance characteristics comparable to lead styphnate compositions.
    Type: Grant
    Filed: September 29, 1995
    Date of Patent: November 4, 1997
    Assignee: Remington Arms Company, Inc.
    Inventor: Frances G. Lopata
  • Patent number: 5677510
    Abstract: A gas generating mixture comprises a high nitrogen and low carbon fuel from he group nitroguanidine (NIGU), tiraminoguanidine nitrate (TAGN), diguanidinium-5,5'-azotetrazolate (GZT) or 3-nitro-l,2,3-triazol-5-one (NTO), as well as copper diammine dinitrate Cu(NH.sub.3).sub.2 (NO.sub.3).sub.2 as the oxidizer and a pyrophoric metal or such a metal alloy on a carrier catalyst.
    Type: Grant
    Filed: November 24, 1995
    Date of Patent: October 14, 1997
    Assignee: Fraunhofer-Gesellschaft zur Forderung der angewandten Forschung e.v.
    Inventors: Klaus Martin Bucerius, Norbert Eisenreich, Helmut Schmid, Walter Engel
  • Patent number: 5675119
    Abstract: A granular explosive is obtained by mixing porous prill ammonium nitrate having an average particle size of 0.5 to 3.0 mm with a liquid aromatic dinitro compound and optionally a metal powder. Explosives having high sensitivity and power can be obtained by a simple and easy process.
    Type: Grant
    Filed: August 1, 1995
    Date of Patent: October 7, 1997
    Assignees: Mitsubishi Chemical Corporation, Nippon Kayaku Kabushiki Kaisha
    Inventors: Koichi Otani, Seiichi Yoshida, Yoshiyuki Ikeda, Hiroyuki Taniguchi
  • Patent number: 5652408
    Abstract: An explosive projectile has a splinter-generating body inside which is placed an explosive and/or incendiary load ignited by a primer. The projectile also contains an intermediate charge placed between the primer and the explosive load. The charge is composed of a mixture of an explosive and a first pyrotechnic composition including at least one oxidizing agent and at least one reducing agent. The explosive projectile may be utilized as a medium caliber projectile ignited upon impact by a pyrotechnic fuse.
    Type: Grant
    Filed: July 14, 1995
    Date of Patent: July 29, 1997
    Assignee: Manurhin Defense
    Inventor: Jacques Nicolas
  • Patent number: 5587552
    Abstract: Infrared illuminant compositions are disclosed which produce significant quantities of infrared radiation when burned but which produce very little visible light. The infrared illuminant compositions provide specific illumination in the spectral range visible with night vision devices. The disclosed infrared illuminant compositions include ammonium nitrate as the main oxidizer, an infrared generator such as cesium nitrate, rubidium nitrate, or mixtures thereof, and a fuel. By eliminating potassium and its direct and indirect visible light contributions, from the illuminant compositions, improved concealment indexes are obtained. Other additives, including conventional binders and burn rate modifiers may be used as to tailor the performance and physical characteristics of the infrared illuminant composition.
    Type: Grant
    Filed: November 9, 1993
    Date of Patent: December 24, 1996
    Assignee: Thiokol Corporation
    Inventors: David R. Dillehay, David W. Turner
  • Patent number: 5565710
    Abstract: There is provided a process for manufacturing a granular igniter, which facilitates control of the igniter preparation, handling of the granule igniter and improvement in manufacturized yield. The present invention also provides a process for manufacturing a granular igniter which is free from toxic gas generation when burned and which has excellent fluidity. The present invention moreover reduces the number of manufacturing process facilitating the production process, and reducing production costs.An igniter containing boron and potassium nitrate are mixed together with water in a homogenizer to form a homogeneous slurry. The mixing ratio of the igniter to the water is set in the range of 1.0:0.6 to 1.0:1.6 in terms of weight ratio. The slurry is sprayed in a spray dryer where it is dried and granulated. Micropowder, which failed to be collected as the granule, is recovered through a cyclone, and recirculated as the raw material.
    Type: Grant
    Filed: January 23, 1995
    Date of Patent: October 15, 1996
    Assignee: NOF Corporation
    Inventors: Koji Ochi, Nobukazu Asano, Yoshio Sawada
  • Patent number: 5431756
    Abstract: The invention relates to melt cast explosives, propellants or pyrotechnics which contain a nitrated energetic material such as trinitrotoluene, a desensitizer such as wax or petroleum oil and an alkylated polyvinylpyrrolidone emulsifying agent.
    Type: Grant
    Filed: February 25, 1993
    Date of Patent: July 11, 1995
    Assignee: Mach I, Inc.
    Inventors: Bernard M. Kosowski, Robert C. Taylor
  • Patent number: 5404813
    Abstract: The present invention relates to metal filaments for use as fuel additives for rocket propellants, explosives, and other pyrotechnic devices. Preferred filaments are those such as zirconium, niobium and titanium (and alloys thereof) which have very high heat of combustion.
    Type: Grant
    Filed: October 23, 1989
    Date of Patent: April 11, 1995
    Assignee: Composite Materials Technology, Inc.
    Inventor: James Wong