With Inorganic Oxygen-halogen Salt Patents (Class 149/31)
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Patent number: 8192567Abstract: 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: GrantFiled: April 7, 2008Date of Patent: June 5, 2012Assignee: Purdue Research FoundationInventors: Stephen D. Heister, Benjamin L. Austin, Jr., Jeremy Corpening
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Patent number: 5476557Abstract: Match head formulations suitable for the production of safety matches and matches that may be struck anywhere are described in which chromium compounds, sesqui-based phosphorus compounds, sulphur compounds and oxides of zinc are absent. In their place is described the use of either amorphous phosphorus or, in the case of match head formulations suitable for the production of safety matches, an iron phosphade known as ferrophosphorus. These formulations are environmentally friendly both in manufacture and use. Environmentally friendly match head formulations which may be brightly colored are also described.Type: GrantFiled: March 9, 1993Date of Patent: December 19, 1995Assignee: Bryant & May Ltd.Inventor: Michael G. C. Cox
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Patent number: 5259899Abstract: Match head formulations suitable for the production of safety matches and matches that may be struck anywhere are described in which chromium compounds, sesqui-based phosphorus compounds, sulphur compounds and oxides of zinc are absent. In their place is described the use of either amorphous phosphorus or, in the case of match head formulations suitable for the production of safety matches, an iron phosphide known as ferrophosphorus. These formulations are environmentally friendly both in manufacture and use. Environmentally friendly match head formulations which may be brightly colored are also described.Type: GrantFiled: September 9, 1992Date of Patent: November 9, 1993Assignee: Bryant & May Ltd.Inventor: Michael G. C. Cox
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Patent number: 4841865Abstract: A composition for producing smoke from phosphorus vapor for use in search and rescue markers and a method of producing such composition. The composition comprises a blended mixture of the following ingredients in the following weight percentage ranges:red phosphorus--55% to 80%;oxidizing agent (sodium nitrate or ammonium nitrate)--10% to 30%;metal fuel--5% to 10%;acid absorber--1% to 5%; andsynthetic rubber binder--1% to 8%.Such a composition tends to be more stable and reliable than previous compositions used for this purpose, as well as less hazardous to manufacture. In addition, it permits an increase in the proportion of red phosphorus used, with a resultant increase in burn time and/or flame and smoke emission.Type: GrantFiled: March 23, 1988Date of Patent: June 27, 1989Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National DefenceInventor: Thomas Liberman
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Patent number: 4832766Abstract: This invention relates to methods of controlling the generation and flow of fracto-emitted particles, preferably exo-electrons for purpose of enhancing chemical reactivity, e.g., the sensitivity of friction matches, or for purpose of diminishing chemical reactivity, e.g., stabilizing of explosives.Type: GrantFiled: July 1, 1987Date of Patent: May 23, 1989Assignee: Intermatch Sweden ABInventor: Stig Johansson
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Patent number: 4743512Abstract: A method of manufacturing a flat form from blended metallic powder including a major constituent by weight having a high melting point and a minor constituent by weiht having a substantially lower melting point includes selection of the powder to provide continuous and reproducible compacted flat forms. Powder is selected on the basis of compressibility and flowability. The selected powder is compacted to a flat green form and then liquid phase sintered. The flat form may be stacked to provide a flat article of a desired thickness which will result in a monolithic or composite cross section when subsequently sintered. Liquid phase sintering is carried out in a manner designed to avoid undesirable embrittlement and to provide a uniform microstructure in the fully consolidated article. The process is especially useful in the production of tungsten heavy alloy plate.Type: GrantFiled: June 30, 1987Date of Patent: May 10, 1988Assignee: Carpenter Technology CorporationInventors: David T. Marlowe, Gregory J. Del Corso, Robert E. Carnes, David Esposito, William J. Burns, II, Edward F. Holland, David L. Strobel
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Patent number: 4534810Abstract: A smoke-producing composition which will produce a dense smoke in about 5 conds and continues to produce a visible cloud having a duration of about 10 minutes for military screening operations in the field. The composition has critical limits in proportions and particle size for effective and efficient use in the 81 mm mortar cartridge. The composition consists essentially of 75 to 90 parts red phosphorus of 10.+-.5.mu. in size, 10 to 20 parts sodium nitrate of 30.+-.15.mu., and 4 to 10 parts of an epoxy binder. All parts being by weight.Type: GrantFiled: January 30, 1984Date of Patent: August 13, 1985Assignee: The United States of America as represented by the Secretary of the ArmyInventor: Charles A. Knapp
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Patent number: 4503004Abstract: A method of molding a red phosphorous pyrotechnic mix containing an epoxy nder, which is markedly improved by the addition of silica.Type: GrantFiled: March 12, 1984Date of Patent: March 5, 1985Assignee: The United States of America as represented by the Secretary of the ArmyInventor: Peter D. Mirabella
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Patent number: 4130082Abstract: A multilamp flashlamp assembly capable of emitting highly intense audible and visual signals and particularly adapted for alarm situations. The assembly utilizes percussive flashlamps which operate in conjunction with a respective plurality of pyrotechnic devices located about the assembly's transparent housing. Each device provides an audible signal in response to the energy received from the respective lamp when the lamp is fired.Type: GrantFiled: June 6, 1977Date of Patent: December 19, 1978Assignee: GTE Sylvania IncorporatedInventors: Andre C. Bouchard, Harold H. Hall, Jr., Robert J. Patton, Thomas J. Sentementes
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Patent number: 4060434Abstract: The match-head compositions have a content of microscopic hollow particles or "microspheres", generally 10 to 1000 microns in diameter. Compositions may be formulated for any type of match. Microspheres are described having walls of siliceous materials, plastics materials (such as phenolic resins) and carbon. The presence of microspheres offers considerable savings in materials, and enables good burning rate and striking sensitivity to be achieved without the need for special aeration measures.Type: GrantFiled: June 8, 1976Date of Patent: November 29, 1977Assignee: Bryant and MayInventors: Albert Frank Lanham, Philip Sydney Barned, Sydney Ralph Potter
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Patent number: 4013491Abstract: Metal-penetrating incendiary compositions comprising particulate magnesium and fluoroalkyl phosphate esters of 5 to 11 carbon atoms, optionally containing additives such as ferric oxide, silicon and potassium perchlorate. The compositions can be prepared in paste form, cast and cured at an elevated temperature.Type: GrantFiled: May 14, 1975Date of Patent: March 22, 1977Assignee: Thiokol CorporationInventors: Graham C. Shaw, Russell Reed, Jr.