Processes Of Making Patents (Class 149/109.6)
-
Patent number: 8037831Abstract: A method for effecting physicochemical transformations and detonation properties in a material using super-compressed detonation includes: providing an insensitive energetic material to be compressed; super-compressing the material by exposure to at least one of a normally or obliquely oriented cylindrical imploding shock wave, generated from a first detonation; effecting transformations from the super-compression in the material including increasing at least material density, structural transformations and electronic energy gap transitions relative to a material unexposed to the super-compression; exposing the super-compressed material to a second detonation; and effecting transformations from the second detonation in the material including increasing at least detonation pressure, velocity and energy density relative to a material unexposed to the super-compression and second detonation.Type: GrantFiled: November 23, 2010Date of Patent: October 18, 2011Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National DefenceInventors: Fan Zhang, Stephen Burke Murray, Andrew J. Higgins
-
Patent number: 8025010Abstract: A quaternary salt is added at low concentrations to a solid propellant, thereby increasing the conductivity of the polymeric binder to provide for safe discharge of static electricity at relatively low potentials.Type: GrantFiled: September 18, 1990Date of Patent: September 27, 2011Assignee: Alliant Techsystems Inc.Inventor: Gary K. Lund
-
Patent number: 8017768Abstract: An improved method of preparing 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane (2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazatetracyclo[5.5.0.05,9.03,11]dodecane) (HNIW) is disclosed. The compound is useful as a high energy, high density explosive or propellant oxidizer.Type: GrantFiled: April 5, 1994Date of Patent: September 13, 2011Assignee: The United States of America as represented by the Secretary of the NavyInventors: William P. Norris, Arnold T. Nielsen
-
Patent number: 8012277Abstract: An ionic liquid is disclosed A precursor composition that comprises at least one ionic liquid and at least one energetic material is also disclosed, as is a method of synthesizing an ionic liquid and a method of desensitizing an explosive composition.Type: GrantFiled: April 13, 2007Date of Patent: September 6, 2011Assignees: Alliant Techsystems Inc.Inventors: Steven M. Nicolich, Alexander J. Paraskos, Daniel W. Doll, Gary K. Lund, Wendy A. Balas
-
Publication number: 20110209600Abstract: A highly-filled paste, and a method and device of de-aerating and injecting the paste, the paste including: (a) a solid filler; (b) an organic binder, and (c) a residual gas, wherein the paste contains at least 80 volume-% of the solid filler and has a viscosity exceeding 100 kilopascal·seconds, wherein the filler, binder, and residual gas are intimately mixed so as to form a substantially homogeneous paste, and wherein a composition of the solid filler, binder, and residual gas is selected such that the homogeneous paste has: an average density greater than 98.5% of a Theoretical Maximum Density (TMD).Type: ApplicationFiled: April 5, 2011Publication date: September 1, 2011Applicant: RAFAEL ADVANCED DEFENSE SYSTEMS LTD.Inventors: Tamar Kaully, Dganit Shacham, Haim Baniste, David Tidhar, Corrine Nadiv
-
Patent number: 8007607Abstract: Combustible structural composites and methods of forming same are disclosed. In an embodiment, a combustible structural composite includes combustible material comprising a fuel metal and a metal oxide. The fuel metal is present in the combustible material at a weight ratio from 1:9 to 1:1 of the fuel metal to the metal oxide. The fuel metal and the metal oxide are capable of exothermically reacting upon application of energy at or above a threshold value to support self-sustaining combustion of the combustible material within the combustible structural composite. Structural-reinforcing fibers are present in the composite at a weight ratio from 1:20 to 10:1 of the structural-reinforcing fibers to the combustible material. Other embodiments and aspects are disclosed.Type: GrantFiled: September 19, 2008Date of Patent: August 30, 2011Assignee: Battelle Energy Alliance, LLCInventors: Michael A. Daniels, Ronald J. Heaps, Eric D Steffler, William D. Swank
-
Patent number: 8002914Abstract: A flash powder formulation for use in flash grenades that produces reduced smoke containing from about 10 percent by weight to about 60 percent by weight of zirconium hydride, from about 40 percent by weight to about 90 percent by weight CAN, and from zero percent by weight to about 5 percent by weight of a binder material.Type: GrantFiled: March 24, 2009Date of Patent: August 23, 2011Assignee: United States of America as represented by the Secretary of the NavyInventors: Steven P. D'Arche, Travis Swanson
-
Patent number: 8002917Abstract: A method of adjusting the yield of a manufactured compound comprising primarily two energetic materials to yield a product comprising primarily one of the two energetic materials. Specifically, embodiments of the present invention provide a method of purifying a compound primarily comprising RDX and HMX to achieve a desired purity of RDX with an acceptable yield percentage. By adding sufficient acetonitrile (ACN) to the manufactured compound to dissolve it and form a solution; adding a pre-specified volume of water to the resultant solution and stirring sufficiently to precipitate at least the RDX; separating and drying the precipitate, a pre-specified purity and yield percentage of RDX may be obtained by varying the volume of water added. The process uses relatively environmentally benign recyclable solvents at ambient temperature and pressure reducing both environmental impact and energy costs.Type: GrantFiled: February 9, 2009Date of Patent: August 23, 2011Assignee: The United States of America as represented by the Secretary of the ArmyInventors: Veera M. Boddu, Reddy Damavarapu, Krishnaiah Abburi
-
Patent number: 7998290Abstract: A thermobaric munition including a composite explosive material, the composite explosive material having a high-explosive composition, and a detonable energetic material dispersed within the high-explosive composition, the detonable energetic material in the form of a thin film, the thin film having at least one layer composed at least in part by a reducing metal and at least one layer composed at least in part by a metal oxide. A related method includes tailoring the blast characteristics of high explosive composition to match a predetermined time-pressure impulse, the method including disbursing a detonable energetic material having a preselected reaction rate within the high-explosive composition, the detonable energetic material in the form of a thin film, the thin film having at least one layer composed at least in part by a reducing metal and at least one layer composed at least in part by a metal oxide.Type: GrantFiled: April 13, 2010Date of Patent: August 16, 2011Assignee: Lockheed Martin CorporationInventors: Edward W. Sheridan, George D. Hugus, George W. Brooks
-
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
-
Patent number: 7988801Abstract: Perchlorate-free green flare compositions are disclosed which, when burned, produce green smoke and flames. Methods of producing the compositions are also disclosed.Type: GrantFiled: December 12, 2008Date of Patent: August 2, 2011Assignee: The United States of America as represented by the Secretary of the NavyInventors: Robert G. Shortridge, Christina M. Yamamoto
-
Patent number: 7985309Abstract: The present invention relates to a solid formulation, more particularly to a pellet-type formulation that produces CO2 gas in a constant rate when contacting liquid acid. The pellet-type formulation of the invention is characterized in that the pellet is produced by the following: preparing a pellet by extrusion molding a composition that comprises a major amount of Sodium Carbonate (Na2CO3) and a minor amount of gelatin, and additionally a minor amount of synthetic resin that hardly reacts with acid; coating said pellet with a resin that hardly reacts with acid; and forming a recess or a hole at the center of the pellet. The present invention also relates to a process of preparing a pellet-type formulation that produces CO2 gas in a constant rate when contacting liquid acid.Type: GrantFiled: May 17, 2004Date of Patent: July 26, 2011Assignee: E-WHA Fresenius Kabi Inc.Inventor: Yong-Nyun Kim
-
Patent number: 7985310Abstract: This invention relates to granules comprising a homogenous mixture of metal flakes and/or metal powder and metal oxide powder, and a binder. The invention also relates to a process for producing such granules. The process includes the step of forming a mixture of metal flakes and/or metal powder and metal oxide powder, forming the mixture into a homogenous blend, adding the blend, together with a binder, to a granulator to form granules, and drying the granules. Granules so formed containing aluminum, aluminum oxide and iron oxide find particular use as sensitizers and energizers in explosives compositions.Type: GrantFiled: May 12, 2010Date of Patent: July 26, 2011Inventor: Denis Gordon Verity
-
Patent number: 7981393Abstract: A method of preparing salt of dinitramidic acid, comprising nitration of an initial compound with a nitrating acid mixture to form dinitramidic acid in a reaction mixture. A positive ion is added to the reaction mixture and forms with the dinitramide ion an ion pair complex which precipitates in the acidic reaction mixture, and the precipitate is separated from the mixture. The remaining spent acid can be reprocessed for recovery of acid for preparation of a new nitrating acid mixture. The preferred positive ion is the guanylurea ion which gives a precipitate of guanylurea dinitramide. The precipitate can be used as starting material for preparation of other dinitramide salts, such as KDN and ADN. The guanylurea ion can be formed in situ in the process by cyanoguanidine being reacted with the reaction mixture.Type: GrantFiled: January 21, 2005Date of Patent: July 19, 2011Assignee: Försvarets MaterielverkInventors: Carin Vörde, Henrik Skifs
-
Publication number: 20110168308Abstract: A thermobaric munition including a composite explosive material, the composite explosive material having a high-explosive composition, and a detonable energetic material dispersed within the high-explosive composition, the detonable energetic material in the form of a thin film, the thin film having at least one layer composed at least in part by a reducing metal and at least one layer composed at least in part by a metal oxide.Type: ApplicationFiled: April 13, 2010Publication date: July 14, 2011Inventors: Edward W. Sheridan, George D. Hugus, George W. Brooks
-
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
-
Publication number: 20110162547Abstract: A firing mixture which contains explosives, oxidizing and reducing agents is characterized in that it contains one or several explosives which can be fired by laser light. Also disclosed is a process for producing the same and its use.Type: ApplicationFiled: December 9, 2010Publication date: July 7, 2011Inventors: Rainer Hagel, Dieter Hofmann, Bodo Preis, Klaus Redecker, Wolfram Seebeck
-
Patent number: 7972454Abstract: A method of preparing a gassed water-in-oil emulsion explosives composition from a gasser solution of an inorganic nitrate, an ammonium species and an optional accelerator which is added to an emulsion explosive composition, reacts and forms gas bubbles is disclosed. The emulsion explosive composition is composed of a discontinuous aqueous phase, a continuous water immiscible organic phase, and an emulsifier. The reaction between the gasser solution and the emulsion explosive composition is such that the emulsifier does not undergo chemical attack.Type: GrantFiled: August 27, 2001Date of Patent: July 5, 2011Assignee: Orica Australia Pty Ltd.Inventors: Helen O'Hara, David Stow, David Edwin Yates
-
Patent number: 7964045Abstract: High explosive coatings and inks suitable for use in micro-electronic initiators for micro-electro-mechanical mechanisms used as safe and arm devices, are prepared from coating compositions of crystalline energetic materials and applied using various methods. These methods include wiping and spraying, as well as, pressure applications using a syringe or the like, and application of thick film ink to write specified patterns on a selected surface. A volatile mobile phase may be added to the coating composition to partially dissolve the energetic material so that, upon evaporation of the mobile phase, the energetic material precipitates and adheres to the selected surface.Type: GrantFiled: May 15, 2009Date of Patent: June 21, 2011Assignee: The United States of America as represented by the Secretary of the ArmyInventors: Daniel Stec, III, Gartung Cheng, Brian E. Fuchs, Neha Mehta
-
Publication number: 20110139322Abstract: Perchlorate-free flare compositions are disclosed which, when burned, produce yellow smoke and flames. Methods of producing the compositions are also disclosed.Type: ApplicationFiled: January 14, 2011Publication date: June 16, 2011Inventors: Christina M. Yamamoto, Robert G. Shortridge
-
Publication number: 20110132222Abstract: A thermobaric munition including a composite explosive material, the composite explosive material having a high-explosive composition, and a detonable energetic material dispersed within the high-explosive composition, the detonable energetic material in the form of a thin film, the thin film having at least one layer composed at least in part by a reducing metal and at least one layer composed at least in part by a metal oxide.Type: ApplicationFiled: June 13, 2006Publication date: June 9, 2011Applicant: LOCKHEED MARTIN CORPORATIONInventors: Edward W. Sheridan, George D. Hugus, George W. Brooks
-
Publication number: 20110132505Abstract: The invention provides a method for gassing an explosive to sensitise the explosive and/or modify the density of the explosive. The method comprises reacting at least one oxidiser with at least one nitrogen containing compound in the explosive to generate nitrogen gas. The explosive is formulated to effect diffusion of the oxidiser and/or the compound into contact with each other, the nitrogen gas being generated by oxidation of the compound by the oxidiser. The invention extends to the explosive compositions themselves.Type: ApplicationFiled: January 10, 2008Publication date: June 9, 2011Applicant: Newcastle Innovation LimitedInventors: Bogdan Zygmunt Dlugogorski, Eric Miles Kennedy, Mark Stuart Rayson, Gabriel Da Silva
-
Publication number: 20110132506Abstract: Perchlorate-free flare compositions are disclosed which, when burned, produce red smoke and flames. Methods of producing the compositions are also disclosed.Type: ApplicationFiled: January 14, 2011Publication date: June 9, 2011Inventors: Robert G. Shortridge, Christina M. Yamamoto
-
Patent number: 7955453Abstract: A process for manufacturing gradient structures uses multiple jet-spraying mechanisms to form layers of distinct precursors into a gradient composition.Type: GrantFiled: September 15, 2006Date of Patent: June 7, 2011Assignee: The United States of America as represented by the Secretary of the NavyInventors: John M. Kelley, Raafat H. Guirguis
-
Patent number: 7955451Abstract: A munition is described including a reactive fragment having an energetic material having a least one layer of a reducing metal or metal hydride and at least one layer of a metal oxide dispersed in a binder material. A method is also described including forming a energetic material; including combining the energetic material having a least one layer of a reducing metal or metal hydride and at least one layer of a metal oxide with a polymeric binder material to form a mixture; and shaping the mixture to form a reactive fragment. The munition may be in the form of a warhead, and the reactive fragment may be contained within a casing of the warhead.Type: GrantFiled: February 22, 2007Date of Patent: June 7, 2011Assignee: Lockheed Martin CorporationInventors: George D. Hugus, Edward W. Sheridan
-
Patent number: 7955452Abstract: A process for manufacture of explosive formulations containing a halogenated wax binder, involving dilution of the halogenated wax in a non-aqueous lacquer, slurring the explosive in an aqueous solution and applying heat and vacuum to yield a granular explosive which provides complete coating to avoid hot spots and is quickly pressable at lower temperature and pressure.Type: GrantFiled: March 10, 2009Date of Patent: June 7, 2011Assignee: The United States of America as represented by the Secretary of the ArmyInventors: Sanjeev K. Singh, Philip Samuels, Christos Capellos, Barry Fishburn
-
Publication number: 20110120603Abstract: An explosive emulsion to be used in conjunction with a gas-producing agent, such as sodium nitrite, to form an explosive emulsion with a density between 0.50 g/cm3 and 0.90 g/cm3. The present invention also includes the method for producing the explosive emulsion. The explosive emulsion is stable for at least 96 hours with nitrogen bubbles, having a predetermined dimension range, homogenously distributed. To maintain this low-density explosive emulsion stable, between 84% and 95% by weight of an oxidizing solution is combined with 5% to 16% by weight of a fuel solution. The fuel solution includes solid cacao fat as a stabilizing agent and stearic acid to prevent the combination of the nitrogen bubbles. The method for producing the oxidizing solution includes combining ammonium nitrate, sodium nitrate, thiourea, urea, and water at a temperature between 80 and 90 degrees centigrade. In another step of the method, a fuel solution is produced by combining an emulsifier, oil, diesel No.Type: ApplicationFiled: November 12, 2010Publication date: May 26, 2011Inventors: Pio Francisco Perez Cordova, Luis Alfredo Cardenas Lopez
-
Patent number: 7947137Abstract: An explosive device and methods for forming same, the device comprising a portion of nitrous oxide and a portion of fuel. In one example, the explosive device may include a first storage area containing said portion of nitrous oxide, and a second storage area containing said portion of fuel, wherein the first storage area selectively maintains the portion of nitrous oxide separated from the fuel in the second storage area prior to detonation of the explosive device. In another example, in the event the explosive fails to detonate, the explosive device may include a vent valve for discharging the nitrous oxide from the explosive device to reduce or eliminate its explosive characteristics. The explosive device can be used for various applications, including but not limited to military weapons, pyrotechnic devices, or civil blasting explosives, for example.Type: GrantFiled: March 9, 2007Date of Patent: May 24, 2011Assignee: Pioneer AstronauticsInventor: Robert M. Zubrin
-
Publication number: 20110108172Abstract: Embodiments of the present subject matter provide a compound and material that may be used as a lead-free primary explosive. An embodiment of the present subject matter provides the compound copper(I) nitrotetrazolate. Certain embodiments of the present subject matter provide methods for preparing lead-free primary explosives. The method includes: providing cuprous salt; providing water; providing 5-nitrotetrazolate salt; combining the cuprous salt, water and 5-nitrotetrazolate salt to form a mixture; and heating the mixture. The method may also include providing cuprous chloride and providing sodium 5-nitrotetrazolate. Certain embodiments of the present subject matter also provide methods for preparing copper(I) nitrotetrazolate. The method includes: providing cuprous salt; providing water; providing 5-nitrotetrazolate salt; combining the cuprous salt, water and 5-nitrotetrazolate salt to form a mixture; and heating the mixture.Type: ApplicationFiled: October 8, 2010Publication date: May 12, 2011Applicant: PACIFIC SCIENTIFIC ENERGETIC MATERIALS COMPANYInventors: JOHN W. FRONABARGER, Michael D. Williams, William B. Sanborn
-
Patent number: 7938920Abstract: An explosive composition is provided that is comprised of a Heavy ANFO and grain hulls. In one embodiment, the grain hulls are comprised of rice hulls. The grain hulls serve both as an inert bulking additive that reduces the density of the composition and as a sensitizer that reduces the energy needed to reliably detonate the composition. Also provided is a method for manufacturing an explosive composition comprised of Heavy ANFO and grain hulls, such as rice hulls. Additionally, a method of using an explosive comprised of ANFO and grain hulls in a mining operation is disclosed.Type: GrantFiled: October 17, 2005Date of Patent: May 10, 2011Inventors: Kevin H. Waldock, Christopher J. Kulish
-
Patent number: 7931764Abstract: A method to substantially desensitize a metastable intermolecular composite material to electrostatic discharge and friction comprising mixing the composite material with an organic diluent and removing enough organic diluent from the mixture to form a mixture with a substantially putty-like consistency, as well as a concomitant method of recovering the metastable intermolecular composite material.Type: GrantFiled: July 26, 2006Date of Patent: April 26, 2011Assignee: The United States of America as represented by the United States Department of EnergyInventors: James R. Busse, Robert C. Dye, Timothy J. Foley, Kelvin T. Higa, Betty S. Jorgensen, Victor E. Sanders, Steven F. Son
-
Patent number: 7931763Abstract: Adding nanoparticles as a catalyst to solid propellant fuel to increase and enhance burn rates of the fuel by up to 10 times or more and/or modifying the pressure index. A preferred embodiment uses TiO2 nanoparticles mixed with a solid propellant fuel, where the nanoparticles are approximately 2% or less of total propellant mixture. The high surface to volume ratio of the nanoparticles improve the performance of the solid propellant fuel.Type: GrantFiled: October 16, 2009Date of Patent: April 26, 2011Assignee: University of Central Florida Research Foundation, Inc.Inventors: Eric Petersen, Jennifer Small, Metthew Stephens, Jason Arvanetes, Sudipta Seal, Sameer Deshpande
-
Patent number: 7921777Abstract: The present invention relates to a method and an arrangement for the production of radially perforated, cylindrical propellant tubes (1, 23, 31). The invention is based on the underlying idea that the respective propellant tube (1, 23, 31) must be fixed and centred between its own open ends and thereafter to be perforated in stages in a large number of consecutive perforation operations by means of one or more pins (13) capable of displacement in a pin die (10) relative to the propellant tube towards and at least through the major proportion of the cylindrical wall of the propellant tube. Also included in the invention is the requirement for the displacement, between each perforation operation, of the propellant tube and the pin die (10) used for the preparation operation in such a way relative to one another that the propellant tube, after a complete perforation operation, shall be covered in its entirely by perforations (32, 33, 35, 36), which lie at a predetermined e-dimension distance from one another.Type: GrantFiled: December 8, 2004Date of Patent: April 12, 2011Assignee: Eurenco Bofors ABInventor: Johan Dahlberg
-
Publication number: 20110073224Abstract: A composite solid rocket propellant comprising a fuel, an oxidizer and a dicyclopentadiene binder is provided. The dicyclopentadiene binder may be mixed with the fuel and oxidizer as a monomer and then polymerized after mixing to form the composite solid propellant. The composite solid propellant may also comprise plasticizers, triphenylphosphine, lecithin or combinations thereof. Methods for making the composite solid rocket propellant of the present invention are also provided.Type: ApplicationFiled: April 7, 2008Publication date: March 31, 2011Inventors: Stephen D. Heister, Benjamin L. Austin, JR., Jeremy Corpening
-
Patent number: 7896989Abstract: Methods of making cross sectional, functionally-graded munitions propellants exhibiting various distributions of particle concentrations and burn rate, including having a fast burning core and slower burning outer layer(s). Unlike prior art methods of preparing such munitions, propellants prepared according to our inventive method(s) may be performed substantially as a single extrusion step or as a few processing steps, without requiring the time, expense and/or difficulties that characterized familiar, laminating methods and methods which use multiple extruders. Our inventive method advantageously employs a demixing phenomenon that, prior to our inventive application and teaching, has been considered quite undesirable in the preparation of propellants where uniformity and well-mixedness have been propellant attributes widely sought after.Type: GrantFiled: February 11, 2005Date of Patent: March 1, 2011Assignee: The United States of America as represented by the Secretary of the ArmyInventors: David Fair, Dilhan M. Kalyon, Sam Moy, Leon R. Manole
-
Patent number: 7896990Abstract: Nanotubular structures of high energy materials are used in high energy compositions, such as propellants.Type: GrantFiled: November 2, 2005Date of Patent: March 1, 2011Assignee: The United States of America as represented by the Secretary of the NavyInventors: James J. Baker, John R. Luense, Randall J. Cramer
-
Publication number: 20110041969Abstract: The present invention provides pyrotechnic gas generator compounds and a method of obtaining them. Said compounds have a composition which comprises: an oxidizing charge which comprises at least one inorganic perchlorate and which does not comprise a chlorine scavenger; and a crosslinked, oxygen-containing hydrocarbon binder obtained by crosslinking an elastomer in the presence of at least one crosslinking agent and at least one oxygen-containing plasticizer for said elastomer; said elastomer having a molecular weight of more than 200 000 and being preferably selected from polyesters and polyacrylates; said at least one oxygen-containing plasticizer being composed of a plasticizer of which the molecular weight is greater than 350 g/mol and the oxygen balance equal to or greater than ?230 %, of a mixture of such plasticizers with one another or of a mixture of at least one such plasticizer with at least one other oxygen-containing plasticizer. Said compounds can be obtained continuously by extrusion.Type: ApplicationFiled: April 30, 2008Publication date: February 24, 2011Applicant: SNPE MATERIAUX ENERGETIQUESInventors: Frederic Marlin, Bernard Thibieroz
-
Patent number: 7887651Abstract: The present invention relates to a semi-continuous method for obtaining a composite explosive charge comprising a solid polyurethane matrix loaded with a charge, the charge being in powder form and comprising at least one nitro-organic explosive.Type: GrantFiled: November 17, 2006Date of Patent: February 15, 2011Assignee: EurencoInventor: Bernard Mahe
-
Publication number: 20110030859Abstract: A new process for forming MICs as well as three exemplary categories of MIC formulations is disclosed. MICs disclosed herein include a first exemplary category for which combustion can be initiated and sustained by either a heat (flame) source or electrical power, a second exemplary category of formulations that can be ignited and that sustain combustion at low pressures only with electrical power and a third exemplary category of formulations that can be ignited and extinguished at low pressures only with electrical power. The new process of MIC formulation provides energetic liquid oxidizers in place of traditional solvents, thus eliminating the need for solvent extraction. The energetic liquid oxidizer serves as a medium in which to suspend and grow the 3D nanostructure formed by the cross linked polymer (PVA). As a consequence, the 3D nanostructure entraps the liquid oxidizer, preventing it from evaporating and thereby eliminating the need for solvent extraction, preserves the 3D nanostructure shape.Type: ApplicationFiled: May 15, 2009Publication date: February 10, 2011Inventor: Wayne N. Sawka
-
Publication number: 20110024007Abstract: The present invention is directed to an explosive composition comprised of heavy ANFO and expanded polymeric beads that have a density that is less than the density of the heavy ANFO. The expanded polymeric beads have a size that is determined or based on the size of ammonium nitrate prills used in the heavy ANFO portion of the composition. In one embodiment, the expanded polymeric beads that are utilized in the composition are at least 70% of the lower limit of the mesh size of the predominant ammonium nitrate prill mesh size. In another embodiment, the expanded polymeric beads are at least 70% of the a size that is related to the average mesh size of the ammonium nitrate prills.Type: ApplicationFiled: October 10, 2010Publication date: February 3, 2011Inventor: Kevin H. Waldock
-
Publication number: 20110000390Abstract: A percussion primer composition including at least one explosive, at least one nano-size non-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: ApplicationFiled: February 9, 2007Publication date: January 6, 2011Applicant: Alliant Techsystems Inc.Inventors: Jack Erickson, Joel Sandstrom, Gene Johnston, Neal Norris, Patrick Braun, Reed Blau, Lisa Spendlove Liu
-
Patent number: 7854811Abstract: A solvent-free process is used to make mouldable plastic explosives or mouldable plastic explosive simulant products.Type: GrantFiled: July 11, 2009Date of Patent: December 21, 2010Assignee: Kemzecur, Inc.Inventors: Albert Wartman, Bruce Barak Koffler
-
Patent number: 7842144Abstract: The invention relates to a novel process for the production of casting powder with high ntirocellulose content, and casting multiple-base rocket propellant including nitroglycerin formulated from such casting powder.Type: GrantFiled: June 1, 2007Date of Patent: November 30, 2010Assignee: The United States of America as represented by the Secretary of the NavyInventors: Stephen N. Stiles, John Luense
-
Publication number: 20100294113Abstract: A method to charge a container with an energetic mix is disclosed. This method includes the following steps: (a) adding a plurality of particulate energetic mix constituents and a binder to the container; and (b) mixing the plurality of energetic mix constituents utilizing a non-contact mixer to form a homogeneous mixture within the container, and curing the binder to solidify the homogeneous mixture and bind the homogeneous mixture to the container. The container may be a liner or pre-form intended for insertion into a device, or may form a portion of the device itself, such as an aft portion of a rocket motor or casing for an explosive device. Because the resonant mixer does not have a moving impeller or other component that contacts the energetic mix and the container is not reused, there is minimal decontamination required between each mix and the manufacturer may rapidly commence assembling the next device, rather than clean-up and recertification.Type: ApplicationFiled: October 15, 2008Publication date: November 25, 2010Inventor: Michael D. McPherson
-
Patent number: 7833366Abstract: The present invention relates generally to methods of making carbon nanotubes, and more particularly to the interaction of single wall carbon nanotubes with hydrazoic acid to introduce energetic azide groups into the nanotubes to form activated carbon nanotubes.Type: GrantFiled: October 31, 2007Date of Patent: November 16, 2010Assignee: The United States of America as represented by the Secretary of the NavyInventors: Farhad Forohar, Magdy Bichay
-
Patent number: 7824511Abstract: A method for making high energy compositions, such as propellants, explosives, pyrotechnics or the like, including a solid metal particulate fuel dispersed in a cured binder matrix. The compositions are formed with ingredients including a particulate metal fuel such as boron, binder polymer (such as GAP polyol), binder plasticizer, and a curing agent containing isocyanate. The improved method includes pre-reacting the particulate metal fuel with an amount of isocyanate, which acts as a curative to neutralize residual acid. The particulate metal fuel/isocyanate from the pre-curing step is mixed together with the binder polymer, binder plasticizer, and remaining curing agent to form the solid propellant. The initial neutralization of the metal fuel avoids gassing and improves the mechanical properties of the propellant yield.Type: GrantFiled: July 3, 2007Date of Patent: November 2, 2010Assignee: The United States of America as represented by the Secretary of the NavyInventors: James J. Baker, Tina Woodland
-
Publication number: 20100269964Abstract: An explosive device and methods for forming same, the device comprising a portion of nitrous oxide and a portion of fuel. In one example, the explosive device may include a first storage area containing said portion of nitrous oxide, and a second storage area containing said portion of fuel, wherein the first storage area selectively maintains the portion of nitrous oxide separated from the fuel in the second storage area prior to detonation of the explosive device. In another example, in the event the explosive fails to detonate, the explosive device may include a vent valve for discharging the nitrous oxide from the explosive device to reduce or eliminate its explosive characteristics. The explosive device can be used for various applications, including but not limited to military weapons, pyrotechnic devices, or civil blasting explosives, for example.Type: ApplicationFiled: March 9, 2007Publication date: October 28, 2010Applicant: PIONEER ASTRONAUTICSInventor: Robert M. Zubrin
-
Publication number: 20100269965Abstract: The present invention generally relates to gas generant compositions for inflators of occupant restraint systems, for example. An extrudable pyrotechnic composition includes polyvinylazoles for use within an airbag gas generator. The fuel may be selected from exemplary polyvinylazoles including 5-amino-1-vinyltetrazole, poly(5-vinyltetrazole), poly(2-methyl-5-vinyl) tetrazole, poly(1-vinyl) tetrazole, poly(3-vinyl) 1,2,5 oxadiazole, and poly(3-vinyl) 1,2,4-triazole. An oxidizer is combined with the fuel and preferably contains phase stabilized ammonium nitrate. A novel method of forming the compositions is also presented wherein the various constituents are wetted and/or dissolved, and then cured within the polyvinylazole matrix thereby forming a more intimate combination within the gas generant composition. A vehicle occupant protection system 180, and other gas generating systems, incorporate the compositions of the present invention.Type: ApplicationFiled: June 22, 2010Publication date: October 28, 2010Inventors: Graylon K. Williams, Robert J. Matlock
-
Patent number: 7807000Abstract: A thermobaric explosive composition is provided that includes coated fuel particle, a nitramine, and binder. The coated fuel particles preferably have a magnesium core and an aluminum coating. Upon detonation, the nitramine disperses the coated fuel particles over a blast area during a first overpressure stage. The aluminum coating of the fuel particles has a thickness selected to provide an amount of aluminum that is stoichiometrically less than an amount of ambient-air oxygen available in the blast area for aerobic combustion with the aluminum during the first overpressure stage. Once exposed, the magnesium cores may combust to increase the impulse generated in the first overpressure stage. Also provided are articles of manufacture and related methods.Type: GrantFiled: October 25, 2004Date of Patent: October 5, 2010Assignee: The United States of America as represented by the Secretary of the NavyInventor: James J. Baker
-
Patent number: 7806999Abstract: This invention relates to granules comprising a homogenous mixture of metal flakes and/or metal powder and metal oxide powder, and a binder. The invention also relates to a process for producing such granules. The process includes the step of forming a mixture of metal flakes and/or metal powder and metal oxide powder, forming the mixture into a homogenous blend, adding the blend, together with a binder, to a granulator to form granules, and drying the granules. Granules so formed containing aluminum, aluminum oxide and iron oxide find particular use as sensitizers and energizers in explosives compositions.Type: GrantFiled: October 15, 2001Date of Patent: October 5, 2010Inventor: Dennis Gordon Verity