Igniting Compositions Patents (Class 149/108.6)
-
Patent number: 6527887Abstract: Cyclodextrin polymers are nitrated to provide novel nitrate esters of cyclodextrin polymers which are useful for encapsulating explosives to provides energetic compositions of reduced sensitivity; a new method for the preparation of cyclodextrin polymers is provided.Type: GrantFiled: January 18, 2002Date of Patent: March 4, 2003Assignee: Mach I, Inc.Inventors: Anja Ruebner, Gary L. Statton, John P. Consaga
-
Patent number: 6523477Abstract: A warhead assembly includes a penetrating casing having a forward nose portion and an generally cylindrical aft portion opposite said nose portion. A closure ring is disposed in said aft portion, a vent also being provided in said aft portion. The warhead casing is filled with a predetermined level of explosive material. Preferably the explosive composition contain reduced amounts of explosive material and a strong oxidizer. The warhead assembly possesses superior penetration and blast performance, as well as superior Insensitive Munitions characteristics.Type: GrantFiled: March 30, 1999Date of Patent: February 25, 2003Assignee: Lockheed Martin CorporationInventors: George W. Brooks, Eric E. Roach
-
Publication number: 20020182436Abstract: Reactive foils and their uses are provided as localized heat sources useful, for example, in ignition, joining and propulsion. An improved reactive foil is preferably a freestanding multilayered foil structure made up of alternating layers selected from materials that will react with one another in an exothermic and self-propagating reaction. Upon reacting, this foil supplies highly localized heat energy that may be applied, for example, to joining layers, or directly to bulk materials that are to be joined. This foil heat-source allows rapid bonding to occur at room temperature in virtually any environment (e.g., air, vacuum, water, etc.). If a joining material is used, the foil reaction will supply enough heat to melt the joining materials, which upon cooling will form a strong bond, joining two or more bulk materials. If no joining material is used, the foil reaction supplies heat directly to at least two bulk materials, melting a portion of each bulk, which upon cooling, form a strong bond.Type: ApplicationFiled: April 18, 2002Publication date: December 5, 2002Inventors: Timothy P. Weihs, Todd Hufnagel, Omar Knio, Michael Reiss, David van Heerden, Howard Feldmesser
-
Patent number: 6419771Abstract: The non toxic bipropellent of the present invention contains a non-toxic hypergolic miscible fuel (hereinafter referred to as “NHMF”) and a rocket grade hydrogen peroxide. This NHMF has rapid ignition capability and minimizes the formation of precipitate, even when exposed to extreme heat or water. The NHMF of this invention contains 5 species. Namely, a polar organic species miscible with hydrogen peroxide; a propagator, which may be substituted or unsubstituted amines, amides or diamines; an inorganic metal salt, which reacts to form a catalyst in solution or as a colloid; acetic acid; and alkali acetate. The inorganic metal salt is miscible with the polar organic species and the propagator in solution.Type: GrantFiled: February 22, 2000Date of Patent: July 16, 2002Assignee: The United States of America as represented by the Secretary of the NavyInventor: Bradley M. Lormand
-
Patent number: 6409854Abstract: A high temperature incendiary composition having a reactive material of titanium, a second reactive material of boron, an oxidizer of polytetrafluoroethylene in an amount of from about 10 weight percent or less of the composition and a binder of carboxyl-terminated polybutadiene acrylonitrile in an amount of from about 5 weight percent or more. The composition is safe to handle, ignites readily, burns at a low and controlled rate and produces a very high flame temperature.Type: GrantFiled: October 27, 2000Date of Patent: June 25, 2002Assignee: The United States of America as represented by the Secretary of the NavyInventors: Robert C. Gill, Carl Gotzmer, Pamela Carpenter, Eric Schlegel
-
Patent number: 6402864Abstract: A high temperature incendiary composition having a reactive material of titanium, a second reactive material of boron, an oxidizer of polytetrafluoroethylene in an amount of from about 20 weight percent or greater of the composition and a binder of CTBN in an amount of from about 10 weight percent or less. The composition is safe to handle, ignites readily, produces low slag, burns at a low and controlled rate and produces a very high flame temperature.Type: GrantFiled: October 27, 2000Date of Patent: June 11, 2002Assignee: The United States of America as represented by the Secretary of the NavyInventors: Robert C. Gill, Carl Gotzmer, Pamela Carpenter, Eric Schlegel
-
Patent number: 6368434Abstract: The invention relates to a process to manufacture an object using at least one granular material (16) having a large particle size, for example greater than or equal to 0.1 mm, such process being characterised by the following stages: the granular material or materials are placed in a mould (2) at the same dimensions as the object to be made and incorporating at least one evacuation opening (6), said opening being of a size that is less than the particle size of the material, a liquid-phase binder (21) is poured into the mould, the binder is mixed between the grains of material and the excess binder is drained off through the evacuation opening using suction means (11). Application in the manufacture of igniting tubes or propellant charges for artillery ammunition.Type: GrantFiled: March 24, 2000Date of Patent: April 9, 2002Assignee: Giat IndustrieInventors: André Espagnacq, Nicole Forichon-Chaumet, Tony Rodriguez
-
Patent number: 6315847Abstract: This substantially water-free method for preparing high density igniter granules involves uniformly coating fuel and oxidizer particulates dispersed in a non-solvent with a thermoplastic elastomer solution to produce coated igniter granules exhibiting substantially uniform size and shape distributions. The coated igniter granules are especially useful for waterless extrusion into igniters for automobile gas generating inflation devices, solid propellant rocket motors, and thrust decoys.Type: GrantFiled: January 27, 2000Date of Patent: November 13, 2001Assignee: Cordant Technologies Inc.Inventors: Kenneth E. Lee, Gary K. Lund, Daniel W. Doll
-
Patent number: 6296678Abstract: This invention pertains to an article that emits infrared radiation for a period of about 15 minutes or more, depending on the size and shape, and to a process for preparing the article. The article includes, in a preferred embodiment, a combustible aerogel or other nanocellular substrate with iron metal impregnant formed by thermal decomposition of iron pentacarbonyl deposited on and in the substrate in an amount of at least about 5% or at least about 20% of the weight of the substrate, depending on the substrate. The impregnant reacts exothermically on contact with air or an oxygen-containing gas and imparts sufficient energy to the substrate to cause it to burn for about 30 seconds to about 30 minutes depending on size and shape, thereby emitting infrared radiation. The process pertains to deposition of the impregnant on and in the substrate by flowing a carrier gas saturated with the impregnant precursor over and through the substrate.Type: GrantFiled: August 27, 1999Date of Patent: October 2, 2001Assignee: The United States of America as represented by the Secretary of the NavyInventors: Celia Merzbacher, Ken Limparis, Robert Bernstein, Debra Rolison, Zachary J. Homrighaus, Alan D. Berry
-
Patent number: 6232479Abstract: A novel cyclotetraphosphazene compound, 1,1-diamino-3,3,5,5,7,7-hexaazidocyclotetraphosphazene, is disclosed which has application as an energetic compound and percussion primer. Also disclosed is a method of preparing the compound.Type: GrantFiled: August 15, 2000Date of Patent: May 15, 2001Assignee: The United States of America as represented by the Secretary of the NavyInventors: Farhad Forohar, Paritosh R. Dave, Sury Iyer
-
Patent number: 6227116Abstract: A detonator comprising a shell with a secondary explosive base charge, igniting means and an intermediate pyrotechnical train, said train comprising a novel ignition composition with a specific redox-pair of a metal fuel and a metal oxide oxidant, said fuel being present in excess to the amount of stoichiometrically being required to reduce the metal oxide, the ignition composition being able to ignite said secondary explosive into a convective deflagrating state to reliably detonate the same. Use of said novel ignition composition for the ignition of secondary explosives in general.Type: GrantFiled: July 10, 1998Date of Patent: May 8, 2001Assignee: Nitro Nobel ABInventor: Viktor Dumenko
-
Patent number: 6224099Abstract: The present invention relates to an igniter composition which is capable of being extruded to yield a robust igniter extrudate. The composition is particularly useful in the form of an igniter stick or other selected geometry for use in supplemental safety restraint systems designed for use such as in vehicles, ground or airborne, having such systems.Type: GrantFiled: July 21, 1998Date of Patent: May 1, 2001Assignee: Cordant Technologies Inc.Inventors: Daniel B. Nielson, Gary K. Lund, Reed J. Blau
-
Patent number: 6218554Abstract: A novel cyclotetraphosphazene compound, 1,5-diamino-1,3,3,5,7,7-hexaazidocyclotetraphosphazene, is disclosed which has application as an energetic compound. Also disclosed is a method of preparing the compound.Type: GrantFiled: September 15, 2000Date of Patent: April 17, 2001Assignee: The United States of America as represented by the Secretary of the ArmyInventors: Farhad Forohar, Paritosh R. Dave, Sury Iyer