Patent ID: 8161883
Filing Date: 2012-04-24
Classification: F41A,F42B

Abstract:
1. A safer and brighter flash-bang grenade, comprising: a pyrotechnic mix of about 50 to about 55 wt. % strontium nitrate, about 35 to about 45 wt. % aluminum powder, about 3 to 6 wt. % sulfur, about 0.5 to about 1.5 wt. % boric acid, and about 0.5% anti-caking agent; the pyrotechnic mix being held in a reaction chamber composite housed within the body of the flash-bang grenade, which body has a series of light/sound venting ports; the reaction chamber composite being formed of an inner sleeve of aluminum with a thickness of from about 0.002 to about 0.020 inches, an aluminum charge holder with a thickness of at least about 1/10 inch slip fit about the inner sleeve, and an outer sleeve bonded about the charge holder; the aluminum charge holder having a plurality of vent holes through and about its circumference; wherein, upon ignition, the flash-bang grenade will emit a peak sound level of about 180 db measured at 5 feet therefrom and emit a peak light intensity of about 13.5 million candela.