Inorganic Nitrogen-oxygen Salt Patents (Class 149/41)
  • Patent number: 10065899
    Abstract: An explosive mixture of a water-in-oil dispersion (matrix emulsion) and ammonium nitrate granules (prills) of fertilizer grade, mechanically sensitized by microspheres (microballs), of plastic ceramic, glass or mixtures thereof and/or by means of a chemical reaction of bubble generation (gasification), which obtains an explosive composition of greater energy, greater volume of gases, water resistant and sensitive to No. 8 detonator, with a relative density as a cartridge between 0.95 g/cm3 and 1.25 g/cm3, with a detonation rate in an unconfined medium as cartridge in the range from 3500 m/s to 5900 m/s and it is stable for a minimum period of 6 months and where the explosive mixture is used in plastic or paper cartridges (chubs) as a nitrocarbonitrate primer and/or column loading in land blasting (rocks) from soft hardness to very hard in underground mining and/or open pits.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: September 4, 2018
    Assignee: EXSA S.A.
    Inventor: Karl Maslo Luna
  • Patent number: 9034126
    Abstract: The pyrotechnic smoke kit for generating a smoke screen comprises a mixture of a light-metal powder as the metallic reduction agent; potassium nitrate and, optionally, potassium perchlorate as the main oxidation agent; at least one carbonate as an additional auxiliary oxidation agent; substances splitting off nitrogen as combustion moderators and at least one sublimable and/or evaporable non-toxic smoke-forming substance. A stabilizer from the group of aliphatic and/or aromatic dicarboxylic acids is added to the mixture of the smoke kit to stabilize the smoke kit. Due to this, the formation of gaseous ammonia in the smoke kit can be prevented.
    Type: Grant
    Filed: February 18, 2009
    Date of Patent: May 19, 2015
    Assignee: RHEINMETALL WAFFE MUNITION GmbH
    Inventors: Uwe Krone, Klaus Moeller, Kai Ballentin
  • Patent number: 8784584
    Abstract: Perchlorate-free flare compositions are disclosed which, when burned, produce yellow smoke and flames. Methods of producing the compositions are also disclosed.
    Type: Grant
    Filed: July 3, 2013
    Date of Patent: July 22, 2014
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Christina M. Yamamoto, Robert G. Shortridge
  • Publication number: 20140109788
    Abstract: A liquid electrically initiated and controlled composition comprising an oxidizer, soluble fuel additive(s), and other optional additives to enhance the chemical or ballistic properties, or a combination thereof is disclosed. The liquid composition further comprises stabilizers to enhance thermal stability, sequestrants to minimize deleterious effects of transition metal contaminants, and combustion enhancers maximizing efficiency. Buffers and heavy metal sequestering or complexing agents may be used in combination to achieve the highest degree of thermal stability. Additional ionic co-oxidizers may be added to the liquid composition to stabilize the liquid oxidizer and further depress freezing point. The liquid phase of matter allows flow via pipes or tubes from tanks, reservoirs, or other containers, through metering valves, followed by ignition or combustion modulation when stimulated by electrodes, statically or dynamically.
    Type: Application
    Filed: September 27, 2013
    Publication date: April 24, 2014
    Applicant: Digital Solid State Propulsion, LLC
    Inventors: Michael D. McPherson, Tim Manship
  • Publication number: 20130292013
    Abstract: Perchlorate-free flare compositions are disclosed which, when burned, produce yellow smoke and flames. Methods of producing the compositions are also disclosed.
    Type: Application
    Filed: July 3, 2013
    Publication date: November 7, 2013
    Inventors: Christina M. Yamamoto, Robert G. Shortridge
  • 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: 8277583
    Abstract: Perchlorate-free flare compositions are disclosed which, when burned, produce red smoke and flames. Methods of producing the compositions are also disclosed.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: October 2, 2012
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Robert G. Shortridge, Christina M. Yamamoto
  • Patent number: 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: 7927437
    Abstract: A structured, self-assembled nanoenergetic material is disclosed that includes a nanostructure comprising at least one of the group consisting of a fuel and an oxidizer and a plurality of substantially spherical nanoparticles comprising at least the other of the group consisting of a fuel and an oxidizer. The spherical particles are arranged around the exterior surface area of said nanorod. This structured particle assures that the oxidizer and the fuel have a high interfacial surface area between them. Preferably, the nanostructure is at least one of a nanorod, nanowire and a nanowell, and the second shaped nanoparticle is a nanosphere.
    Type: Grant
    Filed: October 28, 2005
    Date of Patent: April 19, 2011
    Assignee: The Curators of the University of Missouri
    Inventors: Shubhra Gangopadhyay, Rajesh Shende, Senthil Subramanian, Keshab Gangopadhyay, Shameem Hasan
  • Publication number: 20100032063
    Abstract: 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: Application
    Filed: February 10, 2005
    Publication date: February 11, 2010
    Inventors: George C. Mei, James W. Pickett
  • Patent number: 6972059
    Abstract: An exothermal feeder mass is described, containing aluminum and magnesium, at least one oxidizing agent, a SiO2-containing filler, and an alkali silicate as the binder; it is characterized in that it contains roughly 2.5 to 20% by weight of a reactive aluminum oxide with a specific surface of at least roughly 0.5 m2/g and an average particle diameter (d50) from roughly 0.5 to 8 microns and is essentially free of fluoride-containing fluxes.
    Type: Grant
    Filed: May 20, 2000
    Date of Patent: December 6, 2005
    Assignee: AS Lungen GmbH & Co. KG
    Inventor: Udo Skerdi
  • Patent number: 6878221
    Abstract: 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: Grant
    Filed: June 16, 2003
    Date of Patent: April 12, 2005
    Assignee: Olin Corporation
    Inventors: George C. Mei, James W. Pickett
  • Patent number: 6848366
    Abstract: A binary exploding target package, a process of forming an exploding target from the contents of the binary exploding target package, and the exploding target formed therefrom. The binary exploding target package includes a first, target container and a second container. An oxidizer composition is contained within one of the containers and a catalyst composition is contained within the other container. An exploding target is formed by mixing the oxidizer and catalyst compositions, and introducing the mixture into the target container to form an exploding target just prior to using the exploding target as a target for a shooting exercise.
    Type: Grant
    Filed: October 17, 2002
    Date of Patent: February 1, 2005
    Inventor: Daniel Jeremy Tanner
  • Publication number: 20030097953
    Abstract: Disclosed is a gas generating composition being stable and having a heating starting temperature of 170 to 220° C., which is of a low-temperature ignition type. The gas generating composition comprises ammonium perchlorate, a chlorine scavenger, and microcrystalline carbon powder. The chlorine scavenger is sodium nitrate or aluminum/magnesium mixed powder, and the microcrystalline carbon powder is activated carbon or charcoal. The gas generating composition preferably comprises 40 to 58% by weight of ammonium perchlorate, 30 to 41% by weight of the chlorine scavenger, and 1 to 30% by weight of the microcrystalline carbon powder.
    Type: Application
    Filed: October 22, 2002
    Publication date: May 29, 2003
    Inventors: Kazuya Serizawa, Katsuhiko Takahashi
  • Patent number: 6481746
    Abstract: Gas generating compositions and methods for their use are provided. Metal complexes are used as gas generating compositions. These complexes are comprised of a metal cation template, a neutral ligand containing hydrogen and nitrogen, and sufficient oxidizing anion to balance the charge of the complex. The complexes are formulated such that when the complex combusts, nitrogen gas and water vapor is produced. Specific examples of such complexes include metal nitrite ammine, metal nitrate ammine, and metal perchlorate ammine complexes, as well as hydrazine complexes. A binder and co-oxidizer can be combined with the metal complexes to improve crush strength of the gas generating compositions and to permit efficient combustion of the binder. Such gas generating compositions are adaptable for use in gas generating devices such as automobile air bags.
    Type: Grant
    Filed: November 7, 1996
    Date of Patent: November 19, 2002
    Assignee: Alliant Techsystems Inc.
    Inventors: Jerald C. Hinshaw, Daniel W. Doll, Reed J. Blau, Gary K. Lund
  • 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: 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: 5750922
    Abstract: An autoignition system for use in a gas generator for a vehicle occupant restraint system is disclosed. The autoignition system comprises a globule of an autoignition composition adhering to the interior wall of an inflator housing. The system additionally comprises a barrier layer between the autoignition globule and an aluminum inflator housing. The system further comprises a coating over the globule to reduce abrasion of and water absorption into the autoignition globule. The autoignition system of the present invention is safely manufactured and installed via automation.
    Type: Grant
    Filed: October 30, 1996
    Date of Patent: May 12, 1998
    Assignee: Breed Automotive Technology, Inc.
    Inventor: Donald Edwin Seeger
  • 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: 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: 5589660
    Abstract: An improved blasting composition comprising from about 13 to 15 weight percent unrefined petroleum wax, from about 15 to 20 weight percent aluminum powder, from about 10 to 52 weight percent sodium perchlorate and from about 10 to 52 weight percent ammonium nitrate. The blasting composition may be used in combination with ANFO and in place of conventional solid AP propellants and represents an economical alternative thereto.
    Type: Grant
    Filed: August 3, 1995
    Date of Patent: December 31, 1996
    Assignee: United Technologies Corportion
    Inventors: Robert W. Perry, Forrest R. Goodson
  • Patent number: 5495819
    Abstract: An enclosure has stationary walls and a ram dividing the enclosure into first and second sections and movable in a particular direction to enlarge the first section and reduce the second section. A device (e.g. a projectile) is disposed in the second section for expulsion by the ram from the enclosure. Exothermic material, preferably on a hollow stationary support within the first section, is combustible to produce solids not deleterious to the enclosure walls and gases expansible to move the ram in the particular direction. Such material may include an oxidizer (e.g. perchlorate, preferably ammonium perchlorate), a binder-reducing agent, preferably organic (e.g. hydroxy-terminated or carboxy-terminated polybutadiene), an additive (e.g. powdered aluminum) to increase the combustion energy, an additive (e.g. iron oxide) to increase the combustion rate and an additive (e.g. potassium perchlorate) to modify the burning rate slope. Their relative weights may be: NH.sub.4 ClO.sub.4 -74.2, polybutadiene-15.3, Al-1.
    Type: Grant
    Filed: March 9, 1994
    Date of Patent: March 5, 1996
    Inventor: Frank A. Marion
  • Patent number: 5472533
    Abstract: A combination of a first and a second composition provide an adjustable spectrally balanced infrared flare usable to decoy missiles. The first composition includes boron, aluminum, ammonium perchlorate, potassium nitrate and Viton.RTM. A fluoroelastomer. The second composition includes magnesium, polytetrafluoroethylene and Viton.RTM. A fluoroelastomer. Adjusting the ratios between the compositions matches any particular aircraft's spectral signature.
    Type: Grant
    Filed: September 22, 1994
    Date of Patent: December 5, 1995
    Assignee: Alliant Techsystems Inc.
    Inventors: David W. Herbage, Stan L. Salvesen
  • Patent number: 5472536
    Abstract: A pyrotechnic mixture for use in tracer rounds of projectiles to increase sibility under high speed conditions when viewed through laser hardened optics, comprising, in percentages by weight, an admixture of 20% to 40% magnesium, 10% to 30% strontium nitrate, 3% to 8% sodium nitrate, 3% to 20% barium peroxide and 1% to 5% viton. Additional ingredients that increase the pyrotechnic effectiveness are 0% to 5% aluminum, 0% to 15% potassium perchlorate, 0% to 5% manganese dioxide, 0% to 10% iron oxide as Fe.sub.2 O.sub.3, 0% to 15% potassium nitrate, 0% to 10% Teflon and 0% to 1% ethyl cellulose.
    Type: Grant
    Filed: December 19, 1994
    Date of Patent: December 5, 1995
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Thomas A. Doris, Raymond Martin
  • Patent number: 5320043
    Abstract: The invention relates to a low-vulnerability explosive munitions element comprising a casing containing a multicomposition explosive charge, the innermost layer of which is a composite explosive comprising a filled polyurethane or polyester polymer matrix, the filling of which contains more than 20% by weight of organic nitrate explosive, and the peripheral layer of which is a pyrotechnic composition of the family of composite solid propellants comprising a filled polyurethane or polyester polymer matrix the filling of which contains at least one mineral oxidant and less than 17% by weight of organic nitrate explosive. The blast and/or bubble effect produced is close to that produced by the much more-vulnerable charge of monocomposition composite explosive of equivalent mass. The invention also relates to a method for obtaining a blast and/or bubble effect by releasing in the casing of an aforementioned munitions element according to the invention, and then rupture of the casing.
    Type: Grant
    Filed: January 29, 1993
    Date of Patent: June 14, 1994
    Assignee: SNPE Inc.
    Inventors: Michel Andre, Jean-Pierre Mazer, Bruno Nouguez
  • Patent number: 5189247
    Abstract: The invention relates to a low-vulnerability explosive munitions element comprising a casing containing a multicomposition explosive charge, the innermost layer of which is a composite explosive comprising a filled polyurethane or polyester polymer matrix, the filling of which contains more than 40% by weight of organic nitrate explosive, and the peripheral layer of which is a pyrotechnic composition of the family of composite solid propellants comprising a filled polyurethane or polyester polymer matrix the filling of which contains at least one mineral oxidant and less than 10% by weight of organic nitrate explosive. The blast and/or bubble effect produced is close to that produced by the much more-vulnerable charge of monocomposition composite explosive of equivalent mass. The invention also relates to a method for obtaining a blast and/or bubble effect by releasing in the casing of an aforementioned munitions element according to the invention, and then rupture of the casing.
    Type: Grant
    Filed: July 31, 1991
    Date of Patent: February 23, 1993
    Assignee: SNPE Inc.
    Inventors: Michel Andre, Jean-Pierre Mazer, Bruno Nouguez
  • Patent number: 5129972
    Abstract: Emulsifiers are disclosed which comprise the reaction product of component (I) with component (II). Component (I) comprises the reaction product of certain carboxylic acids or anhydrides, or ester or amide derivatives thereof, with ammonia, at least one amine, at least one alkali and/or at least one alkaline-earth metal. Component (II) comprises certain phosphorus-containing acids; or metal salts of said phosphorus-containing acids, the metal being selected from the group consisting of magnesium, calcium, strontium, chromium, manganese, iron, molybdenum, cobalt, nickel, copper, silver, zinc, cadmium, aluminum, tin, lead, and mixtures of two or more thereof. These emulsifiers are useful in water-in-oil explosive emulsions.
    Type: Grant
    Filed: July 17, 1991
    Date of Patent: July 14, 1992
    Assignee: The Lubrizol Corporation
    Inventors: Alan T. Riga, John W. Forsberg
  • Patent number: 5071496
    Abstract: A blasting agent is disclosed for use in a borehole having a pressure resistant closure. The blasting agent is used in combination with a primary initiating system comprised of a detonator and an initiator for the detonator. The blasting agent is preferably a semi-fluid explosive material having a predetermined sensitivity. The sensitivity is related to the borehole diameter and the initiating system's strength, wherein the blasting agent upon initiation is transformed into explosive products by means of reaction front which consumes substantially all the blasting agent as the reaction front passes through the blasting agent. The reaction front has an average velocity of propagation of between 200 meters/second and 1,000 meters/second for at least 30% of the total length of blasting agent located in the borehole. Another aspect of the invention is a method of blasting wherein the average velocity of propagation of the explosive front in the blasting agent is in a range of between 200 m/sec and 1,000 m/sec.
    Type: Grant
    Filed: May 16, 1990
    Date of Patent: December 10, 1991
    Assignee: ETI Explosive Technologies International (Canada)
    Inventors: David L. Coursen, Rufus Flinchman
  • Patent number: 5056435
    Abstract: An infrared illuminant composition and flares produced therefrom having increased burn rate and increased infrared intensity while maintaining low visible light intensity. The composition comprises potassium nitrate, cesium nitrate, hexamine, boron, silicon, ferric oxide and a binder. A process to produce infrared illuminant flares prevents or substantially eliminates chunking out of burning pieces of the illuminant at pressing increments in the flares.
    Type: Grant
    Filed: November 29, 1989
    Date of Patent: October 15, 1991
    Inventors: Leon L. Jones, Daniel B. Nielson
  • Patent number: 5042386
    Abstract: A pyrotechnic composition containing from 55 to 65 percent by weight Fe.s2 O.sub.3 powder, 15 to 25 percent by weight aluminum powder, 5 to 15 percent by weight Ba(NO.sub.3).sub.2, 2 to 3 percent by weight MoS.sub.2 and 5 to 10 percent by weight Viton A (a copolymer of vinylidene fluoride and hexafluoropropylene) is disclosed as being useful in the destruction of metal oxide-semiconductor chips.
    Type: Grant
    Filed: September 27, 1974
    Date of Patent: August 27, 1991
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Howard W. Kruse, Richard A. Breitengross
  • Patent number: 5034070
    Abstract: A gas generating grain has a water-based particulate booster coating thereon. The coating comprises an alkali metal azide, a water-soluble inorganic oxidizer in approximately a stoichiometric proportion of oxidizer to azide, and a nucleating amount of a small particle size metal oxide, preferably selected from the group consisting of iron oxide, nickel oxide and aluminum oxide. The coating is applied to said grain from a water slurry and dried, and when dried has an average particle size of less than about 50 microns.
    Type: Grant
    Filed: June 28, 1990
    Date of Patent: July 23, 1991
    Assignee: TRW Vehicle Safety Systems Inc.
    Inventors: George W. Goetz, Thomas H. Vos
  • Patent number: 4968365
    Abstract: A pyrotechnic mixture for producing a smoke screen includes a reduction agent comprising a light metal, at least one oxidation agent comprising potassium nitrate, combustion moderators including at least one carbonate and a nitrogen producing compound and at least one sublimable or evaporatable, smoke generating, nontoxic additive.
    Type: Grant
    Filed: April 26, 1989
    Date of Patent: November 6, 1990
    Assignee: Rheinmetall GmbH
    Inventor: Uwe Krone
  • Patent number: 4948438
    Abstract: A melt/cast explosive composition comprising about 20 to 100 wt. % of a binary complex of ammonium nitrate (AN) and methyl nitroguanidine (MeNQ) in a molar ratio of about 0.55:1 to 1.35:1. This binary complex may be used alone or it may be formulated with up to about 80 wt. % compatible fuels and/or oxidizers to tailor the formulation for specific military or commercial applications.
    Type: Grant
    Filed: November 13, 1989
    Date of Patent: August 14, 1990
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Michael A. Patrick, Stephen A. Aubert
  • Patent number: 4828633
    Abstract: Salt compositions are disclosed which comprise: (A) at least one salt moiety derived from (A)(I) at least one high-molecular weight polycarboxylic acylating agent, said acylating agent (A)(I) having at least one hydrocarbyl substituent having an average of from about 20 to about 500 carbon atoms, and (A)(II) ammonia, at least one amine, at least one alkali or alkaline earth metal, and/or at least one alkali or alkaline earth metal compound; (B) at least one salt moiety derived from (B)(I) at least one low-molecular weight polycarboxylic acylating agent, said acylating agent (B)(I) optionally having at least one hydrocarbyl substituent having an average of up to about 18 carbon atoms, and (B)(II) ammonia, at least one amine, at least one alkali or alkaline earth metal, and/or at least one alkali or alkaline earth metal compound; said components (A) and (B) being coupled together by (C) at least one compound having (i) two or more primary amino groups, (ii) two or more secondary amino groups, (iii) at least one
    Type: Grant
    Filed: December 23, 1987
    Date of Patent: May 9, 1989
    Assignee: The Lubrizol Corporation
    Inventor: John W. Forsberg
  • Patent number: 4780156
    Abstract: A dry non-explosive additive for ammonium nitrate-fuel oil (ANFO) blasting agents which provides water resistance and wet sensitivity to allow use of the explosive in wet drill holes. The additive contains gelling agents that rapidly hydrate and swell upon water impingement, and thereafter cross-link to rapidly form a peripheral water-blocking barrier to prevent further water intrusion into a loaded blasting agent mass. The additive additionally contains hydrophobic sensitizers and optional fuels to provide points of adiabatic compression and physically hinder water incursion. When the additive is mixed with ANFO, the resulting blasting agent retains its dry and free pouring characteristics and has enhanced explosive properties over untreated ANFO. While ANFO may not detonate in wet conditions unless protected from water, when admixed with our additive it retains its explosive characteristics and detonation potential after placement in wet environs, to function well either wet or dry.
    Type: Grant
    Filed: October 6, 1986
    Date of Patent: October 25, 1988
    Inventors: Harold W. Sheeran, John P. Sheeran
  • Patent number: 4698107
    Abstract: Structure for generating nitrogen gas for inflating an air bag vehicle occupant restraint comprises a grain made of an azide based material which generates gas upon combustion. The grain has an ignition enhancing coating thereon consisting essentially of 20 to 50% by weight of an alkali metal azide, 25 to 35% by weight of an inorganic oxidizer, 10 to 15% by weight of a fluoroelastomer binder, 15 to 25% by weight of magnesium, and 1 to 3% by weight of fumed silicon dioxide. The coating may also include 1 to 6% by weight of graphite as a roughening agent.
    Type: Grant
    Filed: December 24, 1986
    Date of Patent: October 6, 1987
    Assignee: TRW Automotive Products, Inc.
    Inventors: George W. Goetz, Brian K. Hamilton
  • Patent number: 4696705
    Abstract: Structure for generating nitrogen gas for inflating an air bag vehicle occupant restraint comprises a grain made of an azide based material which generates gas upon combustion. The grain is made of a gas generating material which includes 61-68% by weight of sodium azide, 0-5% by weight of sodium nitrate, 0-5% by weight of bentonite, 23-28% by weight of iron oxide, 1-2% by weight of fumed silica, and from about 2 to about 6% by weight of graphite fibers having a diameter of 3-15 microns and an average length of 40 to 125 thousandths of an inch.
    Type: Grant
    Filed: December 24, 1986
    Date of Patent: September 29, 1987
    Assignee: TRW Automotive Products, Inc.
    Inventor: Brian K. Hamilton
  • Patent number: 4689096
    Abstract: A packaged booster charge is provided which is sensitive to initiation by blasting cap yet which contains no self-explosive ingredient. The composition of the booster comprises a low melting point nitrate salt or salt mixture having dissolved or finely dispersed therein an acetylenic substance and void containing material. The booster is safe and economic to manufacture and sufficiently powerful to initiate insensitive blasting agents.
    Type: Grant
    Filed: March 9, 1987
    Date of Patent: August 25, 1987
    Assignee: C-I-L Inc.
    Inventors: Fortunato Villamagna, Howard A. Bampfield
  • Patent number: 4664728
    Abstract: Water-based explosives that use siliceous boron-containing microspheres as sensitizing agents are stabilized by adding multivalent metal ions to the explosives. Zinc salts are especially useful.
    Type: Grant
    Filed: November 21, 1985
    Date of Patent: May 12, 1987
    Assignee: PQ Corporation
    Inventors: James P. Cunnion, Jr., Bruce W. Sands
  • Patent number: 4619722
    Abstract: A solid propellant acts in a chamber to propel a member such as a rocket, the chamber being closed to the atmosphere. The propellant provides high density-impulses and, when combusted, produces end products which do not have any deleterious effects. The propellant preferably includes a binder having hydrocarbon linkages and a lead compound oxidizer formed from an inorganic lead oxidizer salt. This oxidizer has dense characteristics and stable properties at ambient temperatures and through a particular range of temperatures above ambient. The propellant also includes a fuel additive, preferably a metal such as aluminum, having properties of being oxidized by the oxidizer and of reducing the lead. The fuel additive has a percentage by weight relative to the lead compound oxidizer to reduce the lead to lead oxide. The fuel additive is preferably included in the propellant in the range to approximately twenty percent (20%) by weight and is preferably in a fragmentary form.
    Type: Grant
    Filed: September 12, 1983
    Date of Patent: October 28, 1986
    Assignee: Universal Propulsion Company, Inc.
    Inventor: Frank A. Marion
  • Patent number: 4600451
    Abstract: A new arrangement of matter is developed which can be formulated to be a high explosive, a propellant or a gas generator. The new arrangement of matter in its explosive embodiment is known as a microknit composite explosive (MCX) in which an essentially anhydrous mixture of perchlorate based oxidizer salts, surfactants and organic fuels is prepared while the oxidizer is molten, and a microcrystalline property is created which imparts a hard, machinable characteristic to the arrangement of matter.
    Type: Grant
    Filed: February 8, 1984
    Date of Patent: July 15, 1986
    Assignee: Megabar Explosives Corporation
    Inventors: Harvey A. Jessop, M. Taylor Abegg, John A. Peterson, Jay W. Butler, Ronald F. McCormick, Ormand F. Lavery
  • Patent number: 4600450
    Abstract: A new arrangement of matter is developed which can be formulated to be a high explosive, a propellant or a gas generator. The new arrangement of matter in its explosive embodiment is known as a microknit composite explosive (MCX) in which an essentially anhydrous mixture of inorganic salts, surfactants and organic fuels is prepared while the oxidizer is molten, and a microcrystalline property is created which imparts a hard, machinable characteristic to the arrangement of matter.
    Type: Grant
    Filed: February 8, 1984
    Date of Patent: July 15, 1986
    Assignee: Megabar Explosives Corporation
    Inventors: Harvey A. Jessop, M. Taylor Abegg, John A. Peterson, Jay W. Butler, Ronald F. McCormick, Ormond F. Lavery
  • Patent number: 4600452
    Abstract: A new arrangement of matter is developed which can be formulated to be a high explosive, a propellant or a gas generator. The new arrangement of matter in its explosive embodiment is known as a eutectic microknit explosive (EMCX) in which an essentially anhydrous eutectic mixture of ammonium nitrate, soluble explosive, and other oxidizing salts is mixed with surfactants and organic fuels while the eutectic mixture is molten, and a microcrystalline property is created which imparts a hard, machinable characteristic to the arrangement of matter.
    Type: Grant
    Filed: February 8, 1984
    Date of Patent: July 15, 1986
    Assignee: Megabar Explosives Corporation
    Inventors: Harvey A. Jessop, M. Taylor Abegg, John A. Peterson, Jay W. Butler, Ronald F. McCormick, Ormond F. Lavery
  • Patent number: 4597810
    Abstract: The tracer unit, which is particularly adaptable for ammunition used in hand guns and submachine guns, consists of a base charge including about 70 to about 90 weight % strontium peroxide, about 5 to about 15 weight % calcium resinate and about 5 to about 10 weight % magnesium and an igniter charge covering the base charge and including about 40 to about 60 weight % calcium resinate, about 20 to about 30 weight % strontium nitrate and about 20 to about 30 weight % magnesium. A small cavity in the rear end of a projectile is partially filled with the base charge which is tamped into the cavity by the application of a low pressure, such as by hand tamping with a metal plunger or the like. The igniter charge is added to the projectile cavity on top of the base charge and, after drying, the exposed surface of the igniter charge is covered with a compatible moisture proofing material, such as shellac.
    Type: Grant
    Filed: June 20, 1985
    Date of Patent: July 1, 1986
    Inventors: Neal E. Trickel, Sherwood V. Strommen
  • Patent number: 4585495
    Abstract: Explosives that are sensitized blends of inorganic nitrate, e.g., AN, particles, such as AN or ANFO prills, and an aqueous slurry comprising a thickened aqueous solution of an inorganic oxidizing salt, preferably AN, are rendered storage-stable by keeping the slurry's water content low enough, and its viscosity high enough, that the slurry is water-retentive. Water immobilization in the slurry, a requirement for storage stability, is achieved despite the slurry's flowable consistency at the time of blending. A blend containing about 25% slurry or less, is essentially in the form of a granular mass of free-flowing, high-density, slurry-bearing prills, and the slurry is sensitizable by the prills alone. As the slurry content exceeds about 25%, the blend takes on the characteristics of a thick slurry, requiring a supplemental sensitizer in the slurry per se.
    Type: Grant
    Filed: March 11, 1985
    Date of Patent: April 29, 1986
    Assignees: Du Pont of Canada, Inc., E. I. Du Pont de Nemours & Company
    Inventors: Gordon R. Honeyman, James H. Owen, II
  • Patent number: 4566921
    Abstract: A priming composition with an elevated thermal stability, which is sensit to percussion, is disclosed. The priming composition comprises a tetrazolic ring containing primary explosive and a sensitivity additive. The sensitivity additive comprises an oxidizing agent and a reducing agent. 40 to 95 weight percent of the priming composition is the primary explosive, 2.5 to 40 weight percent of the priming composition is the oxidizing agent and 2.5 to 40 weight percent of the priming composition is the reducing agent. The priming composition is applied to heads of percussion fuses.
    Type: Grant
    Filed: February 8, 1985
    Date of Patent: January 28, 1986
    Assignee: L'Etat Francais represente par le Delegue Ministeriel pour L'Armement
    Inventor: Jean Duguet
  • Patent number: 4555276
    Abstract: A method of minimizing deep hole pressure effects on ammonium nitrate-containing blasting agents while optimizing booster sensitivity, detonation rate and detonation energy of such agents, by replacing density control component(s) with a sensitizer formulation comprising particulate aluminum and particulate smokeless powder; and a corresponding detonatable high density emulsion blasting agent utilizing such sensitizing formulation.
    Type: Grant
    Filed: October 29, 1984
    Date of Patent: November 26, 1985
    Assignee: Hercules Incorporated
    Inventor: Scott Winston
  • Patent number: 4554032
    Abstract: A water-in-oil emulsion explosive composition containing hollow microspheres obtained by firing volcanic ash and having a bulk density of 0.05-0.1 and an average particle size of 10-100 .mu.m has improved explosion performance and safety over water-in-oil emulsion explosive composition containing conventional hollow microspheres.
    Type: Grant
    Filed: August 28, 1984
    Date of Patent: November 19, 1985
    Assignee: Nippon Oil and Fats Company, Limited
    Inventors: Katsuhide Hattori, Yoshiaki Fukatsu, Hiroshi Sakai
  • Patent number: 4552597
    Abstract: A soft composite explosive composition is made by forming an oil-continuous, melt-in-fuel emulsion in which the discontinuous phase is comprised of ammonium nitrate and other ingredients which together form a eutectic mixture. The continuous phase includes a combination of fuels and emulsifiers constituting less than 2.5% by weight of the formulation. Soluble compounds such as self-explosive compounds or compounds which can be converted to explosive compounds in situ may be added directly to the discontinuous phase along with one or more oxidizer salts.
    Type: Grant
    Filed: August 17, 1984
    Date of Patent: November 12, 1985
    Assignee: Megabar Explosives Corporation
    Inventors: M. Taylor Abegg, John A. Peterson, Harvey A. Jessop, deceased, by Ormond F. Lavery, personal representative
  • Patent number: 4547234
    Abstract: An explosive composition containing micro-voids consisting of thermoplastic resin hollow microspheres coated with a thermosetting resin has a remarkably excellent low temperature detonability in a small diameter cartridge after lapse of a long period of time.
    Type: Grant
    Filed: July 5, 1984
    Date of Patent: October 15, 1985
    Assignee: Nippon Oil and Fats Company Limited
    Inventors: Fumio Takeuchi, Masao Takahashi, Hiroshi Sakai