Single-step contact explosive device for breaching reinforced walls and method of use therefor
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United States of America Patent
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Apr 19, 2011
Grant Date -
May 20, 2010
app pub date -
Nov 14, 2008
filing date -
Nov 14, 2008
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A lightweight man-packable system for breaching in a single application reinforced structure such as steel reinforced concrete (SRC) walls. Embodiments comprise two explosive charge arrays installed in a housing that is abutted against a wall using either studs or prop sticks. One embodiment positions a secondary linear shaped charge (LSC) or self-forming fragment charge (SFF) spaced apart from a primary high explosive (HE) charge that contacts the structure. The HE is detonated to remove concrete in a pattern sufficient to enable a human to transit the resultant opening and the secondary charge cuts the reinforcement shortly thereafter enabling a “clean” breach via a single application of the system. In select embodiments the second array is positioned on a hinged frame to increase stand-off from the first array and moves into place to detonate over the opening immediately after detonation of the first array.
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