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United States Patent | 8,161,883 |
Harasts , et al. | April 24, 2012 |
A safer flash-bang grenade that yields the state of the art sound intensity, plus a brighter, more intense flash of the order of 13.5 million candela--which effect is due to a combination of a particularly efficacious pyrotechnic formulation and a particular reaction chamber design that momentarily retains or holds-back the reaction escape until the desired intensity is reached. The particular pyrotechnic formulation is based upon a strontium nitrate oxidizer in conjunction with an aluminum powder metallic fuel and a sulfur non-metallic fuel. The particular reaction chamber design includes a relatively rigid, non-fragmenting charge holder, with a slip-fit thin aluminum sleeve internal thereof and a shrink fit or other sealed sleeve external thereof.
Inventors: | Harasts; Nicole D. (Andover Township, NJ), Chow; William Chung-Leung (Belleville, NJ), Motyka; Mark (Fairfield, NJ), Kotefski; Steve (Bloomingdale, NJ), Kotevska; Lidija (Bloomingdale, NJ) |
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Assignee: |
The United States of America as represented by the Secretary of the Army
(Washington,
DC)
|
Family ID: | 45953398 |
Appl. No.: | 12/837,697 |
Filed: | July 16, 2010 |
Application Number | Filing Date | Patent Number | Issue Date | ||
---|---|---|---|---|---|
61226033 | Jul 16, 2009 | ||||
Current U.S. Class: | 102/482; 102/361; 102/498 |
Current CPC Class: | F41A 33/04 (20130101); F42B 4/04 (20130101); F42B 12/36 (20130101); F42B 12/42 (20130101); F42B 27/00 (20130101) |
Current International Class: | F42B 12/36 (20060101); F42B 8/12 (20060101); F42B 4/04 (20060101); F42B 27/00 (20060101) |
Field of Search: | ;102/482,486,487,498,335,336,361,368 |
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4947753 | August 1990 | Nixon, III |
4976201 | December 1990 | Hamilton |
5085147 | February 1992 | Gold et al. |
5654523 | August 1997 | Brunn |
7191708 | March 2007 | Ouliarin |
7387073 | June 2008 | Bodley et al. |
7412929 | August 2008 | Walsh |
7578895 | August 2009 | Chen et al. |
8025011 | September 2011 | Yafai et al. |
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