Patent ID: 7748307

Claim:
A shield for shielding an exposed structural member of a pre-existing structure from an explosive blast, said shield comprising: at least two shield members which are pre-formed and not initially assembled to a structural member of a pre-existing structure, said shield members being pivotably connected to each other via a hinge assembly to enclose at least a length of said structural member upon being retrofitted to said structural member, said shield members defining an annular space between said structural member and said shield members to provide protection to said enclosed portion from an explosive blast, each of said shield members comprising; (a) a metal plate having an interior surface and an outer surface, (b) at least one ultra high strength concrete ballistic liner cast on said outer surface of said metal plate such that said metal plate is more proximal to said structural member than said ballistic liner, and (c) a concrete-integrating-structure attached to said outer surface of said metal plate and embedded in said concrete ballistic liner, said concrete-integrating-structure and said outer surface of said metal plate forming a plurality of concrete retaining pockets, said interior surface of said metal plate being spaced from and facing said structural member and said concrete ballistic liner having an exterior surface facing the exterior environment where a blast can occur, and wherein said shield comprises at least two discrete concrete ballistic liners, at least one concrete ballistic liner being provided for each metal plate.