Patent ID: 6318228
Filing Date: 2001-11-20
Classification: A62B

Abstract:
A forcible entry device for gaining access to a fortified or damaged structure, the forcible entry device comprising:a firing mechanism;a hollow housing defining an interior chamber therein, said housing comprising a first end and a second end opposite said first end, each of said first end and said second end having a passage formed therethrough;means for securing said first end of said housing to said firing mechanism such that combustion gas generated by said firing mechanism is in fluid communication with the interior chamber defined by said housing through the passage formed in said first end of said housing;a piston positioned within the interior chamber defined by said housing adjacent said first end of said housing;a piston-driven striker reciprocally mounted within the interior chamber defined by said housing, said striker comprising a base portion proximate to said piston and an upper portion extending outwardly from the interior chamber through the passage formed in said second end of said housing;a removable end cap secured by a plurality of fasteners to said first end of said housing such that the passage formed in said first end is centrally positioned within said end cap; andmeans for sealing the interior chamber defined by said housing to prevent the combustion gas generated by said firing mechanism from escaping the interior chamber, wherein said means for sealing the interior chamber comprises an annular gasket positioned between said end cap and said housing and an o-ring positioned between said piston and said housing.