Explosive booster
AssigneeC-I-L Inc.
InventorsJoseph A. R. Cloutier, Anthony C. F. Edmonds
Life of this patent
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Abstract
An explosive booster is provided for the detonation of insensitive blasting agents. The booster contains TNT as the sole explosive ingredient, is sensitive to blasting cap initiation yet remains insensitive to impact initiation. The booster comprises an elongate structure having a gradually increasing density from end to end, only the less dense end being cap sensitive. Reduced density is accomplished by the incorporation of voids or pockets, by means of, for example, glass microspheres. Particulate sodium nitrate and vermiculite are included as density enhancers.
Claims8
A cast booster for detonating insensitive blasting charges and containing trinitrotoluene as the sole explosive ingredient, which booster is sensitive to initiation by blasting cap, the said booster comprising an elongate structure of solidified trinitrotoluene having a cap-insensitive dense end portion and an opposite cap-sensitive less dense end portion, the density of the trinitrotoluene at the less dense end being not greater than one megagram per cubic meter and the density throughout the elongate structure having a gradually increasing value from the less dense cap-sensitive end to the dense cap-insensitive end.
Dependencies are inferred from the claim text.