Abstract: A pyrotechnic mixture for use in tracer rounds of projectiles to increase sibility under high speed conditions when viewed through laser hardened optics, comprising, in percentages by weight, an admixture of 20% to 40% magnesium, 10% to 30% strontium nitrate, 3% to 8% sodium nitrate, 3% to 20% barium peroxide and 1% to 5% viton. Additional ingredients that increase the pyrotechnic effectiveness are 0% to 5% aluminum, 0% to 15% potassium perchlorate, 0% to 5% manganese dioxide, 0% to 10% iron oxide as Fe.sub.2 O.sub.3, 0% to 15% potassium nitrate, 0% to 10% Teflon and 0% to 1% ethyl cellulose.
Type:
Grant
Filed:
December 19, 1994
Date of Patent:
December 5, 1995
Assignee:
The United States of America as represented by the Secretary of the Army
Abstract: The invention concerns a red powder composition that is substitute for contional black powder. It can be loose or consolidated forms. In a four grain combination, the red powder can be used as the propelling charge in hand-held rocket signals or flares. There are new methods for preparing the powder and new methods for fabricating articles. The chemical composition of red powder is a dispersion of phenolphthalein, alkali metal nitrate and sulfur in a binder of phenolphthalein salt.
Type:
Grant
Filed:
June 10, 1994
Date of Patent:
June 20, 1995
Assignee:
The United States of America as represented by the Secretary of the Army
Abstract: The invention provides a method of degrading nitrate esters by exposing a spension of a nitrate ester to a combined culture of Sclerotium rolfsii ATCC 24459 and Fusarium Solani IFO 31093. This allows an alleviation of environmental difficulties associated with the demilitarization of nitrocellulose base gun propellants and for the bioremediation of soils contaminated with such nitrocellulose based materials.
Type:
Grant
Filed:
August 12, 1994
Date of Patent:
May 9, 1995
Assignee:
The United States of America as represented by the Secretary of the Army
Inventors:
Bruce W. Brodman, Anil Sharma, Thiruvenkataswamy Shanmugasundaram, Ying-Zhi Zhang
Abstract: The compound 2,4-dinitroimidazole is highly insensitive towards impact and its thermal stability is excellent. The calculated detonation properties results indicate that its performance is about 30% better than TATB. It can be prepared easily with good yield starting from inexpensive starting materials. Results from impact sensitivity, friction sensitivity time-to-explosion temperature and vacuum stability tests indicate that 2,4-dinitroimidazole is less sensitive than both RDX and HMX. Its good oxygen balance and measured heat of formation data of this material indicate that its propellant performance is good.
Type:
Grant
Filed:
November 26, 1993
Date of Patent:
February 7, 1995
Assignee:
The United States of America as represented by the Secretary of the Army
Abstract: The disclosure describes photochemical synthesis of halogenated polycarboxycubanes from simple carboxycubanes and an oxalyl halide. It is possible to synthesize 6-Chloro-1,2,4,7-tetracarbomethoxycubane and 2-Chloro-1,3,5,7-tetracarbomethoxycubane. Photochemical synthesis of halogenated polycarboxycubanes from carboxy cubane and an oxalyl halide is reported.
Type:
Grant
Filed:
March 5, 1993
Date of Patent:
January 3, 1995
Assignee:
The United States of America as represented by the Secretary of the Army
Abstract: Thin oil films on water can be dispersed by the action of a non-ionic dispersant and organic, water-insoluble oxygenated compounds. The oxygenated compounds may be such things as oxo alcohol bottoms or alcohol and ester mixtures.
Abstract: Versatile fence posts are provided with improved wire engaging lugs. These wire engaging lugs permit easy assembly of electric wire fence and can also be used for line fence, with barbed wire, or with woven wire fabric.
Type:
Grant
Filed:
October 30, 1975
Date of Patent:
January 24, 1978
Assignee:
United States Steel Corporation
Inventors:
Dale R. Minor, Byron W. Rose, William R. Vivian
Abstract: Versatile plastic fence posts are provided by combining a front flange, rear flange and web with an integral support plate. Wire engaging lugs permit easy assembly of electric wire fence. The posts can also be used for line fence, with barb wire, or with woven wire fabric.
Abstract: This invention concerns plastic lids and pails having improved resistance to leakage upon impact. Upstanding elements dissipate impact forces from the assembled pail and lid.
Abstract: This invention concerns plastic pails having reinforcement members about their top section. When in combination with plastic lids, these assemblies have increased resistance to deflection from impact forces.
Abstract: In the manufacture of thermoplastic resin particles by polymerization, size classification by screening of polymerized particles at rates from 27 to 69-lbs/hr-ft.sup.2 is improved by the use of solid finely divided phosphates and carbonates in amounts of from 500 to 3000 ppm of such salts provided that this amount is above the breakdown point in classification of the particles for such rates of screening.
Abstract: This invention concerns plastic lids and pails having improved resistance to leakage upon impact. The lids and pails are fastened together by mating threads molded into each.
Abstract: Loose material such as iron ore may be formed into a briquette sheet and separated into their individual briquettes by applying impact forces on opposite sides of the briquette sheet and to next adjacent briquettes.
Abstract: A method is provided for recovery of the one of the phase components of a mixture of solids and liquids by introducing a condensable gas into the withdrawal line from a separator. This has particular usefulness as applied to the recovery of ammonium sulfate by washing of coke oven gases in which case the ammonium sulfate can, by centrifugation, be obtained with a moisture content of less than 1% by weight.