Patent ID: 9644925
Date: 2017-05-09
CPC Classifications: F42B,F42D

Claim:
1. An explosive breaching device with a central longitudinal axis, comprising: a generally cylindrical, steel fragmentation case having an open end and centered on the central longitudinal axis; a conical shape-charged liner disposed in the steel fragmentation case and defining a generally conical empty volume centered on the central longitudinal axis; an explosive disposed in the steel fragmentation case contiguous with a surface of the conical liner that is opposite the generally conical empty volume; a shock attenuating case disposed adjacent to and coaxial with the steel fragmentation case, the shock-attenuating case being made of a material having a speed of sound that differs from a speed of sound in the steel fragmentation case, the shock attenuating case having an open end at a same end as the steel fragmentation case; a mild steel housing surrounding, coaxial with and generally contiguous with the shock-attenuating case, the mild steel housing have an open end at a same end as the steel fragmentation case; a bore formed in base portions of each of the steel fragmentation case, the shock-attenuating case and the mild steel housing distal their respective open ends, the bore being coaxial with the central longitudinal axis; an explosive train disposed in the bore for detonating the explosive in the steel fragmentation case; and wherein the shock-attenuating case includes a side portion in the shape of a sleeve, the side portion having a plurality of through holes formed therein wherein a central longitudinal axis of each through hole is parallel to the central longitudinal axis of the explosive breaching device.