Gas Generative, Chemically Patents (Class 252/4)
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Patent number: 9102812Abstract: A rubber composition capable of improving all of processability, abrasion resistance, rolling resistance property and wet skid performance and a pneumatic tire using the same are provided. A rubber composition comprising 25 to 100 parts by weight of a surface-treated silica based on 100 parts by weight of a rubber component comprising a natural rubber and/or a diene synthetic rubber, the surface-treated silica being obtainable by mixing a silica and a sulfur-containing organic silicon compound represented by the general formula (1): or the general formula (2): in an amount of 1 to 20 parts by weight of the sulfur-containing organic silicon compound on the basis of 100 parts by weight of the silica under a temperature of 130° to 180° C.Type: GrantFiled: October 1, 2008Date of Patent: August 11, 2015Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Noriko Yagi, Yasuhisa Minagawa
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Patent number: 8871110Abstract: A fire extinguishing composition generating fire extinguishing substance through chemical reaction of ingredients at high temperature, wherein: the fire extinguishing composition comprises a flame retardant, an oxidant, a reducing agent and an adhesive; contents of each ingredient are: the flame retardant: 50 wt % to 90 wt %; the oxidant: 5 wt % to 30 wt %; the reducing agent: 5 wt % to 10 wt %; the adhesive: 0% to 10 wt %. In a usage of the fire extinguishing composition, a pyrotechnic agent is adopted as a heat source and a power source; and the purpose of fire extinguishing is achieved by: igniting the pyrotechnic agent, and the oxidant and the reducing agent in the fire extinguishing composition are reacted to generate the in the use of high temperature produced by burning the pyrotechnic agent. by burning the pyrotechnic agent, so as to implement fire extinguishing. Different from the traditional aerosol generating agent, there is no external heat source, and the composition itself does not burn.Type: GrantFiled: September 7, 2011Date of Patent: October 28, 2014Assignee: Xi'An J&R Fire Fighting Equipment Co., Ltd.Inventors: Hongbao Guo, Weipeng Zhang, Sanxue Zhang
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Patent number: 8865014Abstract: The present invention relates to a fire extinguishing composition which generate fire extinguishing substance by high temperature sublimation; the fire extinguishing composition comprising a fire extinguishing material which, in a heating process, can sublimate and release a fire extinguishing substance with fire extinguishing properties; the content of the fire extinguishing material is at least 80 wt %. When the fire extinguishing composition is in use, a pyrotechnic agent as a heat source and a power source; and the purpose of fire extinguishing is achieved by: igniting the pyrotechnic agent, generating a large quantity of fire substance from the fire extinguishing composition in the use of high temperature produced by burning pyrotechnic agent, and the fire substance sprays out together with the pyrotechnic agent.Type: GrantFiled: September 7, 2011Date of Patent: October 21, 2014Assignee: XI'AN J&R Fire Fighting Equipment Co., Ltd.Inventors: Hongbao Guo, Honghong Liu, Xiaoqing Zhao
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Patent number: 8778213Abstract: The present invention relates to a ferrocene-based fire extinguishing composition. The ferrocene-based fire extinguishing composition comprises ferrocene, a ferrocene derivative, or a combination thereof at a content of 25 mass % or more; when in use, a pyrotechnic agent is used as a heat source and a power source, the pyrotechnic agent is ignited, and the high temperature generated by the combustion of the pyrotechnic agent is utilized to make a fire extinguishing composition produce a large amount of fire extinguishing substance, which is sprayed out together with the pyrotechnic agent, so as to achieve the purpose of extinguishing a fire. Compared with a conventional fire extinguishing composition, a more efficient and safer fire extinguishing composition is provided.Type: GrantFiled: September 7, 2011Date of Patent: July 15, 2014Assignee: Xi'An J&R Fire Fighting Equipment Co., Ltd.Inventors: Hongbao Guo, Honghong Liu
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Patent number: 8721911Abstract: The present invention relates to a novel aging-resistant aerosol generating agent and preparation method thereof. The aging-resistant aerosol generating agent in the present invention comprises oxidizer, reducer and bonding agent, wherein the oxidizer is potassium nitrate, the bonding agent is phenolic resin, and the reducer is melamine; the weight percentages of the three constituents are: potassium nitrate: 60˜80%, phenolic resin: 8˜15%, and melamine: the rest. In the preparation process, phenolic resin is dissolved in ethanol to give phenolic resin solution at concentration by 40˜50 wt %; the oxidizer and reducer are pulverized, mixed, and then the phenolic resin solution is added to the mixed powder; next, the mixture is agitated, pelletized, dried, and shaped by pressure molding. Compared to that in the prior art, the aerosol generating agent in the present invention has higher fire suppression efficiency and higher fire suppression rate, and greatly improved aging resistant performance.Type: GrantFiled: July 3, 2010Date of Patent: May 13, 2014Assignee: Shaanxi J & R Fire Fighting Co., Ltd.Inventors: Hongbao Guo, Gaofeng Zheng, Weipeng Zhang
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Patent number: 8529784Abstract: Methods and apparatuses for generating electrically-conductive and/or semi-conductive films, and more specifically, methods and apparatuses for generating conductive and/or semi-conductive films having nanoscale features are provided. In one embodiment, an electrically-conductive or semi-conductive film (e.g., a gold layer of less than 50 nanometer thickness) is provided on a substrate (e.g., a poly(dimethylsiloxane) (PDMS) stamp). The substrate may optionally include patterns or features having raised and recessed portions. A first portion of the film may be removed from the substrate, e.g., by methods such as physically contacting the first portion of the film with a surface to which the first portion preferentially adheres. This process can leave a second portion of the film remaining on the substrate. In some embodiments, the second portion includes at least one region having a dimension substantially parallel to a portion of the substrate i.e., of less than 50 nanometers.Type: GrantFiled: August 9, 2006Date of Patent: September 10, 2013Assignee: President and Fellows of Harvard CollegeInventors: Tingbing Cao, Qiaobing Xu, Adam Winkleman, George M. Whitesides
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Patent number: 8475759Abstract: The present invention relates to a chemical composition and method of generating carbon dioxide for use with an insect monitor and/or capture device comprising: i) an effervescent agent; ii) a solid acid; iii) a deliquescent agent; and optionally iv) an anti-clumping agent.Type: GrantFiled: October 5, 2011Date of Patent: July 2, 2013Assignee: FMC CorporationInventors: Bruce C. Black, Shreya Sheth, Linda Varanyak
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Patent number: 8453751Abstract: A fire control system according to various aspects of the present invention includes an extinguishant configured to absorb heat from the fire. In one embodiment, the extinguishant is configured to absorb thermal radiation from the fire and inhibit reflection of thermal radiation from the extinguishant and/or other surfaces back into the fire. In additional and alternative embodiments, the extinguishant includes a thermal absorbant may be configured to transfer heat into the surface and/or interior of suppressant particles or droplets to promote activation of the suppressant.Type: GrantFiled: June 15, 2004Date of Patent: June 4, 2013Assignee: Firetrace USA, LLCInventor: Joseph Michael Bennett
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Publication number: 20130052452Abstract: Microparticles that encapsulate a fire extinguishing agent or combination of fire extinguishing agents, methods for preparing these microcapsules, methods for using such microcapsules, and articles of manufacture including at least one of such microparticles either in a coating or in a matrix that makes up a structural component of the article of manufacture are disclosed.Type: ApplicationFiled: August 30, 2011Publication date: February 28, 2013Applicant: Empire Technology LLCInventors: Kwangyeol Lee, Seth Adrian Miller
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Publication number: 20120273711Abstract: The present invention relates to a novel aging-resistant aerosol generating agent and preparation method thereof. The aging-resistant aerosol generating agent in the present invention comprises oxidizer, reducer and bonding agent, wherein the oxidizer is potassium nitrate, the bonding agent is phenolic resin, and the reducer is melamine; the weight percentages of the three constituents are: potassium nitrate: 60˜80%, phenolic resin: 8˜15%, and melamine: the rest. In the preparation process, phenolic resin is dissolved in ethanol to give phenolic resin solution at concentration by 40˜50 wt %; the oxidizer and reducer are pulverized, mixed, and then the phenolic resin solution is added to the mixed powder; next, the mixture is agitated, pelletized, dried, and shaped by pressure molding. Compared to that in the prior art, the aerosol generating agent in the present invention has higher fire suppression efficiency and higher fire suppression rate, and greatly improved aging resistant performance.Type: ApplicationFiled: July 3, 2010Publication date: November 1, 2012Applicant: Shaanxi J & R Fire Fighting Co. Ltd.Inventors: Hongbao Guo, Gaofeng Zheng, Weipeng Zhang
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Patent number: 8287834Abstract: Compositions to generate nitrogenous gas, with a low decomposition temperature, and processes for the generation of nitrogenous gas comprising the decomposition of such compositions, are provided. The compositions include azodicarbonamide, a nitrogenous reducing charge, and at least one additive. The azodicarbonamide and the nitrogenous reducing charge represent at least 90% of their weight. The nitrogenous reducing charge includes at least one compound from a first family of reducing components chosen from tetrazole, tetrazole derivatives and their salts, salts of bitetrazole and of its derivatives, 5,5?-azobitetrazole salts, polyvinyltetrazoles and their mixtures; and/or at least one compound from a second family of reducing components chosen from dicyandiamide, 1-hydrobenzotriazole, silicon nitride, nitroguanidine, guanidine nitrate and their mixtures. a nitrogenous reducing charge and azodicarbonamide.Type: GrantFiled: January 20, 2009Date of Patent: October 16, 2012Assignee: HeraklesInventors: Hélène Blanchard, Hugues Rocton
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Patent number: 8147706Abstract: A low temperature flameless aerosol producing fire extinguishing composition containing potassium nitrate and binding fuel is characterized by using cellulose-fibrous mass as a binding fuel, with potassium nitrate at 30-70% and fibrous cellulose mass making up the remainder. A production method for the composition is further provided.Type: GrantFiled: May 10, 2010Date of Patent: April 3, 2012Assignee: ATOZ Design Labs Co., LimitedInventors: Zachary Joseph Zeliff, Liana Vladimirovna Loveless, Vladimir Victorovich Kutsel, Aleksander Ivanovich Doronichev
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Publication number: 20110226493Abstract: A fire suppression system for producing an inert gas mixture having a minimal amount of carbon monoxide, particulates, or smoke. The inert gas mixture may be generated by combusting a gas generant. The gas generant may be a composition that includes hexa(ammine)-cobalt(III)-nitrate. The fire suppression system also includes a heat management system to reduce a temperature of the inert gas mixture. In one embodiment, the system includes multiple gas generators and is configured to ignite the respective gas generant of each gas generator in a predetermined, time based sequential order. For example, the gas generant of each gas generator may be ignited in a sequential order at specified time intervals. Methods of extinguishing fires are also disclosed.Type: ApplicationFiled: May 31, 2011Publication date: September 22, 2011Applicant: ALLIANT TECHSYSTEMS INC.Inventors: Reed J. Blau, James D. Rozanski, Richard M. Truitt, Gary K. Lund, William P. Sampson
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Publication number: 20100181084Abstract: Blocking composition against fire action and advance in diverse surfaces, manufacturing and application process thereof, the present patent of invention, refers to a powered and/or granulated composition, which is partially diluted in water, blocking against advance, with fire extinguisher action, of long-term effect in various types of vegetation. Its manufacturing and its application process hinder the fire spread in bushes, forests and easy combustion and inflammability surfaces, and in rural residences, among others. The product has the advantages of being inert to the environment, not damaging to the soil, effluents, flora and fauna, strongly contributes to the reduction of the emission of polluting gases from blazes, its a product of low toxicity non-corrosive and biodegradable, that can be easily applied and it can even fertilize the soil when the former gets wet by rains.Type: ApplicationFiled: July 18, 2008Publication date: July 22, 2010Inventor: Hélio Maurício do Carmo
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Patent number: 7661483Abstract: Methods of reducing smoke levels in smoke-affected areas, reducing the level of toxic compounds produced by fires, fire suppression, and increasing flame retardancy. In particular, methods according to the present invention comprise dispersing nanocrystalline particles in the areas affected by smoke for sorption of smoke particulates and toxic compounds produced from a fire. The nanocrystalline particles are also effective for use in methods of fire suppression and flame retardancy.Type: GrantFiled: August 22, 2007Date of Patent: February 16, 2010Assignee: NanoScale CorporationInventors: Ravichandra S. Mulukutla, Paul S. Malchesky, Ronaldo Maghirang, John S. Klabunde, Kenneth J. Klabunde, Olga Koper
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Patent number: 7276640Abstract: Methods of reducing smoke levels in smoke-affected areas, reducing the level of toxic compounds produced by fires, fire suppression, and increasing flame retardancy. In particular, methods according to the present invention comprise dispersing nanocrystalline particles in the areas affected by smoke for sorption of smoke particulates and toxic compounds produced from a fire. The nanocrystalline particles are also effective for use in methods of fire suppression and flame retardancy.Type: GrantFiled: October 18, 2005Date of Patent: October 2, 2007Assignee: NanoScale CorporationInventors: Ravichandra S. Mulukutla, Paul S. Malchesky, Ronaldo Maghirang, John S. Klabunde, Kenneth J. Klabunde, Olga Koper
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Patent number: 7070704Abstract: Disclosed is an environment-friendly, pH-neutral, loaded stream extinguishant and a method for preparing the same. The extinguishant is prepared from a mixture of a fire extinguishable component, an organic acid, a surfactant and water. It is very effective in controlling A class fires, as well as showing excellent flame retardance. Also, the extinguishant is neutral in pH so as to neither corrode extinguisher parts, nor affect soil negatively. It can be also applied to portable extinguishers.Type: GrantFiled: January 16, 2003Date of Patent: July 4, 2006Assignee: Fire & Tech Co., Ltd.Inventors: Jung Kang, Doo-Whan Kang, Chang-Woo Lee, Jae-Dong Jung
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Patent number: 6736989Abstract: The invention provides for a substantially non-aqueous, flame extinguishing composition for extinguishing a fire at the sight of a potential flame having a flurocarbon in admixture with a gelled powder additive having salts of weak acids which decompose at the temperature of the sight to reduce or eliminate HF released by the composition when used to extinguish flames.Type: GrantFiled: December 13, 2002Date of Patent: May 18, 2004Assignee: Powsus, Inc.Inventors: Harry E. Stewart, Donald B. MacElwee
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Publication number: 20030218148Abstract: The invention provides for a substantially non-aqueous, flame extinguishing composition for extinguishing a fire at the sight of a potential flame having a flurocarbon in admixture with a gelled powder additive having salts of weak acids which decompose at the temperature of the sight to reduce or eliminate HF released by the composition when used to extinguish flames.Type: ApplicationFiled: December 13, 2002Publication date: November 27, 2003Inventors: Harry E. Stewart, Donald B. MacElwee
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Publication number: 20030038272Abstract: A composition which retards the spread of fire, protects assets at risk from fire damage and emits a material which aids in extinguishing the fire. The composition may be either in the form of a gel or a foam and may be used to protect any sort of object, such as personal property, real property or even humans, from fire. The gel form of the composition contains urea or a urea derivative that retains water and releases CO2 upon heating. In addition, a rheology modifier containing carboxyl groups is also employed. The foam form of the composition contains the urea or urea derivative and the rheology modifier, along with a foam generator such as sodium bicarbonate and citric acid. A method of retarding fire comprises the coating of an item with the fire retardant such that the retardant protects the item from the fire and aids in extinguishing the fire by releasing carbon dioxide.Type: ApplicationFiled: August 24, 2001Publication date: February 27, 2003Inventors: Edmund W. Figiel, Robert E. Byrne, John E. Orloff
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Publication number: 20020030176Abstract: A composition that produces a film forming foam for firefighting is disclosed. The composition comprises an amount, effective for the intended purpose, of a biodegradable mixture of an alkali metal sulfate, a fluorinated polymer, propylene glycol and water.Type: ApplicationFiled: January 11, 2001Publication date: March 14, 2002Inventors: Daniel J. Shaffer, Robert E. Gensemer
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Publication number: 20020020827Abstract: A two-component on-site foam system for producing an intumescing fire protection foam is described with a density of less than 200 kg/m3 and an increased fire resistance endurance, with a polyol component (A), which contains at least one polyol, one catalyst for the reaction between the polyol and the polyisocyanate, water or a blowing agent based on a compressed or liquefied gas as foam-forming agent and at least one intumescing material based on an acid-forming agent, a carbon-supplying compound and a gas-forming agent, and a polyisocyanate component (B), which contains at least one polyisocyanate, wherein the polyol component (A) contains at least one polyester polyol, at least one aminopolyol, at least one halogen-containing polyol, at least one acidforming agent, expanding graphite and at least one ash crust stabilizer, the quantitative ratios of the polyols to the polyisocyanate or polyisocyanates being matched so that, when the polyol component (A) is mixed with the polyisocyanate component (B) as specType: ApplicationFiled: February 20, 2001Publication date: February 21, 2002Inventors: Herbert Munzenberger, Franz Heimpel, Stefan Rump, Christian Forg, Wolfgang Lieberth
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Publication number: 20010048094Abstract: A fire extinguishment composition is provided which demonstrates excellent synergistic effects of component materials. The fire extinguishment composition includes an effective amount of a first flame extinguishment agent and an effective amount of a second flame extinguishment agent. The first flame extinguishment agent may be any chemical substance which is capable of extinguishing a flame by decreasing the amount of oxygen concentration in an atmosphere required to support combustion, by decreasing the flame temperature, or combinations of the two mechanisms. The second flame extinguishing agent is any chemical substance which is capable of releasing an effective amount of chemical fragments so as to interfere with a chemical chain mechanism responsible for propagation of the flame.Type: ApplicationFiled: March 8, 2001Publication date: December 6, 2001Inventors: Arnulf P. Hagen, Sherril D. Christian, Edwin E. Tucker, Cedomir M. Sliepcevich, Jerry L. Lott
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Patent number: 6277296Abstract: Fire suppressant compositions which are substantially free of ammonium nitrate and which comprise potassium nitrate in an amount sufficient to generate at least about 10 wt. % potassium carbonate when combusted. Most preferably, a guanidine salt, such as guanidine nitrate, is used in combination with the potassium nitrate. The compositions employed in the present invention have low pressure exponents, high burning rates and low flame temperatures.Type: GrantFiled: November 30, 1999Date of Patent: August 21, 2001Assignee: Atlantic Research CorporationInventors: Robert S. Scheffee, Jamie B. Neidert, Robert E. Black, III, Robert D. Lynch, James D. Martin
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Patent number: 6217788Abstract: The present invention is directed to a fire suppression composition, comprising a propellant comprising a fuel and an oxidizer, said propellant capable of generating inert gas; and a fire suppression additive selected from the group consisting of iron-containing compounds, non-halide potassium salts, and combinations thereof. Useful iron-containing compounds include ferric oxide, ferric carbonate, ferric oxalate, and iron cyanide dyes. Useful potassium salts include potassium acetate, potassium acetylacetonate, potassium bicarbonate, and potassium carbonate. The invention is also directed to a fire suppression apparatus that utilizes the above fire suppression composition.Type: GrantFiled: February 15, 2000Date of Patent: April 17, 2001Assignee: Primex Aerospace CompanyInventors: Edward J. Wucherer, Gary F. Holland
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Patent number: 6024889Abstract: The invention is directed to a chemically active fire suppression composition, comprising a propellant comprising a fuel and an oxidizer, the propellant capable of generating inert gas; and an environmentally innocuous chemical fire suppressant capable of generating fire suppressive reactive species. The combination of physically acting fire suppression agents and chemically acting, environmentally innocuous fire suppression agents results in a highly effective, environmentally innocuous fire extinguishing composition that has low ozone depletion potential (ODP), low global warming potential (GWP), and high suppression efficiency.Type: GrantFiled: January 29, 1998Date of Patent: February 15, 2000Assignee: Primex Technologies, Inc.Inventors: Gary F. Holland, Michael A. Wilson
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Patent number: 6019177Abstract: The invention relates to flame suppression compositions including an inorganic halogen-containing component including bromine, iodine, or a mixture thereof, and an organic binder system having a heat of formation of less than about 200 cal/g, wherein the composition is solid at a temperature below 100.degree. C. and combusts at a temperature between about 160.degree. C. to 1200.degree. C. to produce a plurality of reaction products capable of suppressing a flame upon application thereto and wherein substantially all the halogen is converted to a solid form after suppressing the flame.Type: GrantFiled: November 18, 1998Date of Patent: February 1, 2000Assignee: Universal Propulsion Co., Inc.Inventor: Donald E. Olander
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Patent number: 5958117Abstract: A gum-thickened fire retardant composition with improved stability and/or corrosion resistance contains a fire retardant salt, a gum thickener, an aqueous liquid carrier and at least one non-toxic water-soluble additive which is at least onecarboxylic acid or salt thereof, having the structural formula ##STR1## wherein R is a substituted or unsubstituted phenyl group, or a substituted or unsubstituted carbon chain containing conjugated unsaturation, and X is hydrogen or a metal.The additive component is present in an amount effective to improve the stability of said composition and/or reduce the corrosivity of the composition to iron. Preferred compositions containing the combination of at least one compound in which R is a phenyl group, especially sodium benzoate, and at least one compound in which R is a carbon chain containing unconjugated unsaturation, especially sorbic acid.Type: GrantFiled: April 3, 1998Date of Patent: September 28, 1999Assignee: Fire-Trol Holdings, L.L.C.Inventors: Robert L. Crouch, Christine Chang
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Patent number: 5938969Abstract: A fire suppressant powder with particle sizes less than 5 .mu.m is made by a chemical reaction between a gas or vapour of a first material and a vapour or an aerosol of a second material. For example an aerosol of sodium hydroxide droplets may be reacted with carbon dioxide gas to produce sodium bicarbonate powder; or boron halide vapour may be reacted with steam to form boric acid powder The powder may be used in fire extinguishers either on its own, or combined with other ingredients such as silica and/or alumina, and calcium stearate.Type: GrantFiled: December 3, 1997Date of Patent: August 17, 1999Assignee: AEA Technology plcInventor: David Alexander Vodden Morton
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Patent number: 5861106Abstract: The invention relates to flame suppression compositions including an inorganic halogen-containing component including bromine, iodine, or a mixture thereof, and an organic binder system having a heat of formation of less than about 200 cal/g, wherein the composition is solid at a temperature below 100.degree. C. and combusts at a temperature between about 160.degree. C. to 1200.degree. C. to produce a plurality of reaction products capable of suppressing a flame upon application thereto and wherein substantially all the halogen is converted to a solid form after suppressing the flame.Type: GrantFiled: November 13, 1997Date of Patent: January 19, 1999Assignee: Universal Propulsion Company, Inc.Inventor: Donald E. Olander
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Patent number: 5660763Abstract: Fire fighting compositions are disclosed which are distinguished from the prior art by the presence of alum as a component of the composition, by the use of a combination of salts in concentrations which will form a eutectic mixture when heated, and by the inclusion of a salt of an organic acid which will generate carbon dioxide by the heat of a fire. Additional inorganic salts may be added to increase the effectiveness of the composition. These fire fighting compositions may be permeated into a cellulosic material to provide fire retardant articles of manufacture.Type: GrantFiled: March 10, 1995Date of Patent: August 26, 1997Assignee: Thermic Labs, Inc.Inventor: George F. Uhlig
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Patent number: 5626787Abstract: A fire extinguishing composition is disclosed consisting essentially of a mixture of (i) desiccated expanded perlite (aluminum silicate) and (ii) mono- and di-ammonium phosphates. The phosphate fraction of the composition preferably includes urea, ammonium chloride, glycerine and mono-ethylene glycol.Type: GrantFiled: June 30, 1995Date of Patent: May 6, 1997Inventor: Ronald A. Porter
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Patent number: 5610359Abstract: A method of generating nontoxic smoke is taught. The method comprises: (a) submerging a nontoxic smoke creating device in a liquid coolant while preventing entry of coolant into said device; said device includes a composition which comprises: (1) a first reactant selected from the group consisting of potassium chlorate, potassium perchlorate, potassium dichromate, cesium nitrate, and potassium nitrate; and (2) a second reactant serving as a reduction agent; (b) activating said smoke creating device by reacting said composition comprising said first reactant and said second reactant, to create solid particulate products having a diameter of about one micron or less which create the nontoxic smoke; and (c) passing said solid particulate products into said coolant through at least one downwardly directed tuyere hydraulically connected at or near the top of said device without any accompanied destruction of said nontoxic smoke creating device.Type: GrantFiled: October 25, 1994Date of Patent: March 11, 1997Inventors: Yechiel Spector, Esther Jacobson, Vida Naishtut, Michael Vittenberg, Zohar Beinert
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Patent number: 5588493Abstract: A method of extinguishing a fire, which includes pre-positioning a fire extinguishing device which includes at least two reactants such that when the reactants are activated they react to create solid particulate products having a diameter of about one micron or less such that, when the products come in contact with the fire they chemically inhibit the chain reactions of the fire flame and bring about the extinguishing of the fire. In one embodiment, the device is submerged in a liquid coolant and includes means for preventing entry of coolant into the device while allowing the escape of said products into the coolant when activated. Another embodiment is used to generate non-toxic smoke using a device which includes a first reactant which is potassium chlorate, potassium perchlorate, potassium dichromate, cesium nitrate or potassium nitrate, and a second reactant serving as a reduction agent.Type: GrantFiled: October 25, 1994Date of Patent: December 31, 1996Assignee: Spectronix Ltd.Inventors: Yechiel Spector, Esther Jacobson, Vida Naishtut, Michael Vittenberg, Zohar Beinert
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Patent number: 5520826Abstract: A flame extinguishing pyrotechnic which flamelessly deflagrates to produce rimarily nitrogen, carbon dioxide, and a fluoroolefin. The flame extinguishing characteristic is achieved by reducing the content of oxygen proximate the deflagration as well as through the flame suppressing properties of particular fluoroolefins. The pyrotechnic composition contains an azido binder such as glycidyl azide polymer (GAP), an azido plasticizer, a solid tetrazole, and a perfluorocarboxylic acid salt. This composition is cured to a rubbery composite by the addition of an isocyanate.Type: GrantFiled: May 16, 1994Date of Patent: May 28, 1996Assignee: The United States of America as represented by the Secretary of the NavyInventors: Russell Reed, Jr., Vicki L. Brady
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Patent number: 5518638Abstract: The invention concerns the production and use of thickened synthetic amorphous silica in water as a fire extinguishing and protection agent in which the water is mixed with 1% to 9% by weight of fumed silica, and the resulting thin fluid suspension is rapidly thickened with mixing and shearing by the addition of from 0.003% to about 0.5% by weight of an additive selected from the group consisting of polyethylene glycols, polypropylene glycols, and their derivatives thereof, wherein the additive has a molar mass between 700 and 600,000.Type: GrantFiled: June 7, 1995Date of Patent: May 21, 1996Inventors: Jurgen Buil, Gernot Lohnert
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Patent number: 5510041Abstract: The process for producing an organic material for extinguishing fires involves mixing at least two kinds of cucurbits which have been divided into pieces, and collecting the water released by them.The mixture is crushed and screened to obtain a very fine powder or a uniform pulp.The powder or pulp is then mixed with at least one basic additive, chosen between sodium bicarbonate and calcium carbonate, in proportions comprised between 1.5% and 7% by weight; with a saline preservative, substantially salicylic acid, in a proportion comprised between 0.1% and 2% by weight; with water from the cucurbits, in a proportion comprised between 50 and 60%; and with at least one surfactant in a proportion comprised between 5% and 30% by weight.Type: GrantFiled: July 9, 1993Date of Patent: April 23, 1996Inventor: Maddalena Sonnino
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Patent number: 5466386Abstract: Fire-extinguishing compositions of low ozone depletion potential comprise dry particles of ammonium bromide coated with an abherent such as zinc stearate to improve flowability. The coated particles enhance the fire-extinguishing properties of chlorofluorocarbons and halogenated paraffins having low ozone depletion properties, when dispersed therein.Type: GrantFiled: May 3, 1993Date of Patent: November 14, 1995Assignee: POWSUS, Inc.Inventors: Harry E. Stewart, Donald B. MacElwee
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Patent number: 5425886Abstract: A system and process for on-demand generation of inert, non-flammable gases and water vapor to decrease the available atmospheric oxygen in the ullage of a hydrocarbon fuel storage tank to a level that will not support combustion of the hydrocarbon fuel, is disclosed. One, or more, of a variety of non-Halon, fire suppressor charges are selectively contained in one or more gas generating cartridges. The gas generating cartridge(s), when activated, cause release of these charges to promote rapid chemical reactions and supply inert, non-flammable gases and water vapor to the tank ullage. Activation is accomplished in aircraft by, either pilot action or, by pressure and temperature sensors contained within the hydrocarbon fuel tank.Type: GrantFiled: June 23, 1993Date of Patent: June 20, 1995Assignee: The United States of America as represented by the Secretary of the NavyInventor: Benjamin D. Smith
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Patent number: 5425885Abstract: The present invention concerns a fire retarding and extinguishing composition, specifically, a liquid fire retarding and extinguishing composition for extinguishing fires caused by classes B and A materials and flammable organic solvents. The fire retarding and extinguishing composition of the present invention comprises:(a) an aqueous extract of plant ash and at least one plant selected from a group consisting of plants of Sapindaceae, Compositae, Cruciferae, Leguminosae, root skin of Ulmaceae, Phytolaccaceae and cotton seed;(b) at least one surfactant, in an amount of 30-60 percent by weight of the weight of said aqueous extract of plant ash.Type: GrantFiled: December 8, 1992Date of Patent: June 20, 1995Assignees: Fenglan Zhao, Huanwen DuInventor: Guansheng Zhao
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Patent number: 5422330Abstract: A dry, particulate sorbent composition containing an organic absorbent, a combustible adsorbent, a water swellable polymer and a water soluble polymer is used to soak up and contain flammable liquids and to render the resulting product fire-safe by misting the product surface with water. Water contacting the polymers contained in the sorbent composition forms with those polymers a surface film which is resistant to the passage of combustible gases thus rendering the sorbed mass fire-safe even when briefly exposed to an open flame.Type: GrantFiled: January 14, 1993Date of Patent: June 6, 1995Assignee: Valkyrie Scientific Proprietary, L.CInventor: Joseph B. Kaylor
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Patent number: 5393437Abstract: A fire extinguishing material that comprises a particulate material to be projected onto a fire having a particle size of no more that 212 microns, a moisture content of no more than 0.50 parts by weight, a hygroscopicity of no more than 3.00 parts by weight, and a bulk density of about 125 milliliters per 100 grams. The particulate material consists essentially of from about 40 to about 80 parts by weight monoammonium phosphate, from about 32 to 0 parts by weight ammonium sulfate, from about 10 to about 18 parts by weight of one or more carbonates selected from the group consisting essentially of magnesium carbonate, potassium carbonate and calcium carbonate, from about 0 to 15 parts by weight of barium sulfate, about 2.0 parts by weight hydrated aluminum-magnesium silicate, about 0.04 parts by weight of diarylide yellow, and about 0.8 parts by weight of methylhydrogen siloxane.Type: GrantFiled: May 31, 1994Date of Patent: February 28, 1995Assignee: Chemguard, Inc.Inventor: Roger K. Bower
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Patent number: 5332524Abstract: Particles of water soluble polymers such as poly(olefin oxides) are formulated to readily dissolve without agglomerating by associating polymer particles with particles of gas producing compounds, suitably a bicarbonate and an acid salt, which are non-reactive to the polymer but produce gas when wetted with water whereby the generated gas maintains polymer particles in separation as the particles dissolve.Type: GrantFiled: April 20, 1992Date of Patent: July 26, 1994Assignee: Valkyrie Scientific Proprietary, L.C.Inventor: Joseph B. Kaylor
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Patent number: 5302303Abstract: This invention relates to stabilizing isocyanate-reactive compositions containing flame retardants by the use of certain tertiary amines or ammonium compounds, in which said stabilized compositions are prepared by mixing(a) at least one isocyanate-reactive compound having a molecular weight of 400 to 10,000 and a functionality of 2 to 7;(b) at least one isocyanate-reactive compound having a molecular weight of less than 399 and a functionality of 2 to 6;(c) at least one (i) isocyanate-reactive tertiary amine polyether, (ii) fatty amido-amine, and/or (iii) ammonium salt derivative of a fatty amido-amine;(d) a flame retardant;(e) a catalyst; and(f) optional additives.This invention also relates to urethane-based products prepared by reaction of organic polyisocyanates with such compositions.Type: GrantFiled: August 24, 1993Date of Patent: April 12, 1994Assignee: Miles Inc.Inventors: Jan L. R. Clatty, Michael T. Wellman, Sanjeev Madan
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Patent number: 5187551Abstract: A thin film semiconductor device and a liquid crystal display apparatus are provided wherein the thin film semiconductor device having light irradiated thereon is cut off by a conductor layer, and the ight can be prevented from reaching the semiconductor layer. As a result, the generation of carriers due to optical excitation does not occur and the off current can be reduced. Because there is no area where electric field intensity in an opposed direction to the source electrode and the drain electrode is weaker than the electric field intensity of the channel region in the semiconductor layer, even after an operation for a prolonged duration under the irradiation of light, carriers generated by optical excitation are not accumulated in the semiconductor layer, and the probability of trapping for the carriers into a gate insulating film is quite low, and therefore variations in the characteristics of the thin film semiconductor device are negligibly small.Type: GrantFiled: April 10, 1991Date of Patent: February 16, 1993Assignee: Sharp Kabushiki KaishaInventors: Hajime Shoji, Noriko Watanabe, Hiroshi Hamada, Hiroaki Kato, Toshio Takemoto, Toshihiko Hirobe
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Patent number: 5075018Abstract: A fire extinguishing composition and product including Alumina Tri Hydrates as the major portion with minor portions of Wollastonite (calcium metasilicate) and an anionic surfactant all pressurized by nitrogen gas of the order of about 200 psi.Type: GrantFiled: November 30, 1989Date of Patent: December 24, 1991Assignee: Radixx/World LimitedInventor: John S. Luckanuck
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Patent number: 5061382Abstract: A fire control composition which is in particulate form, which is anhydrous, and which is particularly effective for fighting Class D fires, such as metal fires. The composition includes particles of crushed glass bearing a hydrophobic coating thereon so that agglomeration of the fire control composition due to adsorption of moisture during storage and use is substantially prevented and so that when applied to fire, the fire control composition forms a blanket over the fire which deprives the fire of oxygen and thereby smothers it. The composition may additionally contain at least one additional material, such as salts, spherulized vitreous beads, or graphite which at least one additional material also bears a hydrophobic coating. The median grain size of the crushed glass is preferably below 200 micrometers, most preferably below 120 micrometers, for example, in the range of from 25 to 35 micrometers.Type: GrantFiled: July 30, 1990Date of Patent: October 29, 1991Assignee: GlaverbelInventors: Alain Halter, Joel Hussenet, Paul Arker, Francois Toussaint
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Patent number: RE40651Abstract: A class of fire suppressant compounds which have labile bromine atoms bound to atoms other than carbon have been discovered to be more effective at suppressing fires than Halon 1211 and Halon 1301. Moreover, this class of fire suppressant compounds hydrolyze or oxidize rapidly in the troposphere and as a consequence thereof, they have minimal ozone depletion potential.Type: GrantFiled: July 16, 2004Date of Patent: March 10, 2009Assignee: Eclipse Aviation CorporationInventors: John H. Huntington, Peter D. Haaland
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Patent number: RE41557Abstract: A class of fire suppressant compounds which have labile bromine atoms bound to atoms other than carbon have been discovered to be more effective at suppressing fires than Halon 1211 and Halon 1301. Moreover, this class of fire suppressant compounds hydrolyze or oxidize rapidly in the troposphere and as a consequence thereof, they have minimal ozone depletion potential.Type: GrantFiled: October 31, 2008Date of Patent: August 24, 2010Assignee: Eclipse Aerospace, Inc.Inventors: John H. Huntington, Peter D. Haaland
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Patent number: RE41558Abstract: A class of fire suppressant compounds which have labile bromine atoms bound to atoms other than carbon have been discovered to be more effective at suppressing fires than Halon 1211 and Halon 1301. Moreover, this class of fire suppressant compounds hydrolyze or oxidize rapidly in the troposphere and as a consequence thereof, they have minimal ozone depletion potential.Type: GrantFiled: October 31, 2008Date of Patent: August 24, 2010Assignee: Eclipse Aerospace, Inc.Inventors: John H. Huntington, Peter D. Haaland