Class / Patent application number | Description | Number of patent applications / Date published |
149109600 | PROCESSES OF MAKING | 12 |
20080236711 | METHODS OF MANUFACTURING MONOLITHIC GENERANT GRAINS - Methods for making a pressed monolithic gas generant for an inflatable restraint device (for example, an airbag system for a vehicle) are provided. The methods include admixing a gas generant material with a ballistic performance modifier to form a mixture. The mixture is granulated. Then, a pressed monolithic gas generant grain is formed by applying pressure to the granulated mixture, where the grain has an actual density of at least about 95% of the maximum theoretical density. The pressure may be applied in a controlled manner to both side of the gas generant material in a die cavity, and removing formed grain from die cavity while maintaining some pressure to both sides of the grain, thereby further improving various pyrotechnic properties. The methods of the disclosure provide pyrotechnic compositions that are economical to manufacture, have improved burn rate, combustion profile, effluent quality, strength, durability, and integrity of the grain, while having a consistent shape between different production lots. | 10-02-2008 |
20100269965 | Gas generant and manufacturing method thereof - 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. | 10-28-2010 |
20110024007 | Heavy ANFO and a Tailored Expanded Polymeric Density Control Agent - 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. | 02-03-2011 |
20110030859 | Family of Metastable Intermolecular Composites Utilizing Energetic Liquid Oxidizers with NanoParticle Fuels In Sol-Gel Polymer Network - 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. Further, the liquid oxidizer matrix produces provides a mechanism through which ignition and combustion may be controlled. The material combustion rate may be adjusted/throttled through adjustments in the amount electrical power supply and may even be extinguished by complete removal of the electrical power supply. Repeated on/off ignition/extinguishment is possible through repeated application and removal of electrical current. | 02-10-2011 |
20110108172 | LEAD-FREE PRIMARY EXPLOSIVE COMPOSITION AND METHOD OF PREPARATION - 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. The method may also include providing cuprous chloride and providing sodium 5-nitrotetrazolate. | 05-12-2011 |
20110132506 | PERCHLORATE-FREE RED SIGNAL FLARE COMPOSITION - Perchlorate-free flare compositions are disclosed which, when burned, produce red smoke and flames. Methods of producing the compositions are also disclosed. | 06-09-2011 |
20110139322 | PERCHLORATE-FREE YELLOW SIGNAL FLARE COMPOSITION - Perchlorate-free flare compositions are disclosed which, when burned, produce yellow smoke and flames. Methods of producing the compositions are also disclosed. | 06-16-2011 |
20110168308 | ENHANCED BLAST EXPLOSIVE - 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 | 07-14-2011 |
20120211133 | Explosive Composition, Method of Making an Explosive Composition, and Method of Using an Explosive Composition - 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. | 08-23-2012 |
20120216926 | Method for Manufacturing Energetic Material Composites - An energetic material composite comprising fuel particles and a hydrated compound is disclosed. The energetic material composite is formed by dispersing fuel particles, which have a negative standard reduction potential relative to a standard hydrogen electrode, in a solvent containing dissolved hydrate, followed by a removal of solvent. When initiated, the fuel particles react with the water bound in the hydrated compound to release energy and hydrogen gas. | 08-30-2012 |
20130000800 | HOMOGENEOUS MESOPOROUS NANOENERGETIC METAL OXIDE COMPOSITE FABRICATION METHODS - The invention provides methods for making homogeneous metal oxide nanoenergetic composites. A method of the invention forms a metal oxide nanostructure via a sol-gel process with surfactant templating. Metal nanoparticles are introduced into the metal oxide nanostructure via wet impregnation. | 01-03-2013 |
20130014866 | METHOD FOR RECLAIMING HIGH EXPLOSIVE FROM WARHEAD BY MELTING-OUT IN SUPERCRITICAL FLUIDAANM LI; JIN-SHUHAACI FenyuanAACO TWAAGP LI; JIN-SHUH Fenyuan TWAANM Yeh; Taso-FaAACI FenyuanAACO TWAAGP Yeh; Taso-Fa Fenyuan TWAANM Lu; Kai-TaiAACI FenyuanAACO TWAAGP Lu; Kai-Tai Fenyuan TWAANM Chiu; Yung-HoAACI FenyuanAACO TWAAGP Chiu; Yung-Ho Fenyuan TWAANM Chen; Shuo-HsiuAACI FenyuanAACO TWAAGP Chen; Shuo-Hsiu Fenyuan TW - A method for the retraction of an explosive component from a high explosive, including the steps of loading a high explosive containing an explosive component into an extraction vessel. A supercritical fluid is supplied to the extraction vessel. The high explosive is contacting with the supercritical fluid at a temperature below the melting point of the explosive component and at a pressure sufficient to extract the explosive component. | 01-17-2013 |