Patent ID: 7882784

Claim:
A demolition charge system comprising: a container having opposing walls, a base coupled to said walls, and a lid, said lid fitting onto said walls to cover an internal chamber defined between said walls and said base; and an elongated hollow tube extending within said internal chamber, said tube having a tube wall extending between opposing open ends, the opposing open ends being supported by said opposing walls; wherein said elongated hollow tube is adapted to receive a detonating initiator extending longitudinally within said tube, and said internal chamber of said container is adapted to receive a main charge such that said tube extends in proximity to said main charge for causing detonation of said main charge upon activation of said detonating cord; wherein said hollow tube wall comprises a first portion having a first thickness and a second portion having a second thickness, wherein said second portion is formed into a recessed area set into a wall of said first portion having side areas and a floor area, said floor area has a first and second side, said first side is within said recessed area and said second side faces into an inner section of said elongated hollow tube, wherein said floor area dimensions are determined based on detonating energy produced by said detonating initiator, material properties of said elongated hollow tube material which absorb said detonating energy, and a threshold energy value from said detonating initiator required to detonate said main charge.