Nitrocellulose, Under 10 Percent Patents (Class 149/48)
-
Patent number: 6547900Abstract: A non azide gas generant composition of nitroguanidine and phase stabilized ammonium nitrate is provided. This gas generant composition has many desirable characteristics such as little production of ash and the production of essentially toxic free exhaust gas. When nitroguanidine is compressed into a pellet it has needle shaped crystals that bend or distort. When the gas generant pellets are subjected to thermal cycling some nitroguanidine crystals will return to their native conformation resulting in pellet growth. To eliminate this pellet growth, nitroguanidine is passed through a VBM mill. The media in the VBM mill pulverizes the nitroguanidine into an amorphous crumb.Type: GrantFiled: January 24, 2001Date of Patent: April 15, 2003Assignee: Breed Automotive Technology, Inc.Inventors: J. B. Canterberry, Mark A. Schmidt, Edward O. Hosey, Robert K. Walsh, John H. Adams
-
Patent number: 6368432Abstract: A gas generating composition for generating gas by a combustion reaction to inflate, for example, an airbag. The gas generating composition includes an oxidant and crystalline carbon powder that reacts with the oxidant. The oxidant is preferably ammonium nitrate. The crystalline carbon powder is preferably activated carbon powder. The gas generating composition preferably includes a high energy substance, binder and plasticizer.Type: GrantFiled: December 15, 1998Date of Patent: April 9, 2002Assignee: NOF CorporationInventors: Kazuya Serizawa, Katsuhiko Takahashi, Kenji Nakamichi
-
Patent number: 6132538Abstract: Gas generant compositions, such as may be suited for use in inflating automotive inflatable restraint airbag cushions, are provided. Such gas generant compositions generally contain a mixture of guanidine nitrate, ammonium nitrate, and a transition metal ammine nitrate, such as copper diammine dinitrate and preferably also contain one or more ballistic additives.Type: GrantFiled: July 30, 1998Date of Patent: October 17, 2000Assignee: Autoliv Development ABInventors: Ivan V. Mendenhall, Robert D. Taylor, Michael W. Barnes
-
Patent number: 5641938Abstract: There is provided a gas generating composition consisting essentially of a mixture of nitroguanidine, phase stabilized ammonium nitrate and an elastomeric binder. When the ammonium nitrate is phase stabilized with from about 7% to about 20%, by weight, of a potassium salt, the mixture is structurally and volumetrically stable over typical automotive operating temperatures and has a melting temperature in excess of 100.degree. C. The mixture generates large volumes of nitrogen and carbon dioxide when ignited with minimal generation of solids or toxic gases and is particularly useful as an inflating medium for automobile airbags.Type: GrantFiled: February 8, 1996Date of Patent: June 24, 1997Assignee: Primex Technologies, Inc.Inventors: Gary F. Holland, Donald R. Poole, Nicholas A. Wolf, Michael A. Wilson
-
Patent number: 5545272Abstract: There is provided a gas generating composition consisting essentially of a mixture of nitroguanidine and phase stabilized ammonium nitrate. When the ammonium nitrate is phase stabilized with from about 7% to about 20%, by weight, of a potassium salt, the mixture is structurally and volumetrically stable over typical automotive operating temperatures and has a melting temperature in excess of 100.degree. C. The mixture generates large volumes of nitrogen and carbon dioxide when ignited with minimal generation of solids or toxic gases and is particularly useful as an inflating medium for automobile airbags.Type: GrantFiled: August 21, 1995Date of Patent: August 13, 1996Assignee: Olin CorporationInventors: Donald R. Poole, Gary F. Holland, Nicholas A. Wolf, Michael A. Wilson
-
Patent number: 5529600Abstract: A material for friction components made by a process including the steps of providing a first powder consisting of grains of a comparatively harder material with a comparatively higher coefficient of friction and an average grain size of from 60 to 100 microns, and a second powder consisting of grains of comparatively softer material with a comparatively lower coefficient of friction and an average grain size of from 60 to 100 microns; mixing the first powder and the second powder to form a powder mixture having a total volume; and subjecting the powder mixture to a pressure and temperature sufficient for the grains of the first powder to be intermixed with the comparatively softer material of the second powder so that the comparatively harder material substantially fills an intergranular space between the grains of the first powder to form the material for the friction components, the comparatively harder material occupying from 1/3 to 4/5 of the total volume of the powder mixture.Type: GrantFiled: July 22, 1994Date of Patent: June 25, 1996Assignee: Sintermetal S.A.Inventors: Antonio R. Fernandez, Pascal Belair, Jean R. Gras
-
Patent number: 4595430Abstract: This invention relates to improved desensitized dynamites, the improvement comprising the incorporation of a desensitizing compound selected from the class of compounds known as diesters, polyesters, triesters except those esters containing benzyl rings, and dialkyl substituted amides or combinations thereof.Type: GrantFiled: May 7, 1984Date of Patent: June 17, 1986Assignee: Atlas Powder CompanyInventor: James J. Baker
-
Patent number: 4566919Abstract: The invention relates to a cast explosive composition having a relatively high density and energy and a critical diameter no larger than about 150 mm at a temperature of 5.degree. C. The composition comprises inorganic oxidizer salt consisting primarily of ammonium nitrate, a water-immiscible organic liquid fuel, less than about 5% water, a sensitizer and an emulsifier which allows formation of a water-in-oil emulsion at an elevated formulation temperature but which also allows the emulsion to weaken and the inorganic oxidizer salt to crystallize at lower or ambient temperatures to produce a cast composition.Type: GrantFiled: April 5, 1984Date of Patent: January 28, 1986Assignee: IRECO IncorporatedInventor: Harvey A. Jessop
-
Patent number: 4547232Abstract: A high density emulsion blasting agent and method is provided for increasing volume energy and optimizing booster sensitivity of water-in-oil emulsion blasting agents without loss of desirable handling characteristics of invert emulsions by utilizing an effective amount of a special sensitizing formulation in total or partial substitution for gas entraining density control agents.Type: GrantFiled: September 24, 1984Date of Patent: October 15, 1985Assignee: Hercules IncorporatedInventor: Richard V. Cartwright
-
Patent number: 4371409Abstract: An explosive composition is provided including as a sensitizer, a mixture of metriol trinitrate and diethylene glycol dinitrate, and including dimethylformamide as a polar compatibility additive.Type: GrantFiled: June 1, 1981Date of Patent: February 1, 1983Assignee: Hercules IncorporatedInventors: Richard V. Cartwright, Ronald D. Lees
-
Patent number: 4233095Abstract: A process is disclosed for preparing a gelatine explosive composition comprising the steps of adding at least one dispersing agent to a mixture of liquid nitric esters and ortho-nitrotoluene, adding the resulting mixture to blasting soluble nitrocotton to form a gel and subsequently adding oxidizing salts, fuels, and when desired, a water-proofing agent such as tamarind seed flour or guar gum to form a homogeneous mixture.Type: GrantFiled: November 13, 1978Date of Patent: November 11, 1980Assignee: Indian Explosives LimitedInventors: Bidhan C. Ghosh, Gopal M. Chopra, Soumendra N. Sen
-
Patent number: 4180425Abstract: A new gelatine explosive composition is disclosed comprising mixtures of nitric esters, ortho-nitro-toluene, blasting soluble nitrocotton, oxidizing salts, fuels and at least one dispersing agent. Said gelatine explosive composition is markedly reduced in the quantities of liquid nitric esters and blasting soluble nitrocotton content.Type: GrantFiled: July 21, 1978Date of Patent: December 25, 1979Assignee: Indian Explosives LimitedInventors: Bidhan C. Ghosh, Gopal M. Chopra, Soumendra N. Sen
-
Patent number: 3959044Abstract: Particulate high explosives containing ammonium nitrate and organic or inorganic ammonium nitrate sensitizers are disclosed along with methods of producing the same. The sensitizers, comprising sulfur, metals, carbonaceous material and combinations of these, are dispersed throughout each particle in intimate association with the ammonium nitrate by suspension in a layer of ammonium nitrate-calcium sulfate reaction product.Type: GrantFiled: March 17, 1975Date of Patent: May 25, 1976Assignee: Union Oil Company of CaliforniaInventor: Donald C. Young