Patent ID: 8621973
Filing Date: 2014-01-07
Classification: F42D

Abstract:
1. A containment chamber for disposing of explosive threat devices having a door-carrying chassis and a two-stage door opening and closing mechanism, comprising: a hollow chamber body of explosion-resistant metal enclosing a detonation space and having a central axis and a cylindrical access opening disposed thereon, said access opening tapering inwardly toward the interior of said chamber; a chamber door of explosion-resistant metal being positionable within said access opening for closing said opening, said door tapering inwardly to cooperate with said access opening to create a gas-tight fit and seal with said chamber body; said chamber body having a locking channel adjacent said cylindrical access opening and enclosing said door when said door is in closed position; said door having at least one locking shoe for selectively engaging and disengaging said annular locking channel to thereby lock and unlock said door against opening movement; a crank link rotatable about said chamber central axis and connected to said locking shoe by a pivoted connecting link, whereby the combination of said crank link, connecting link and locking shoe forms a crank-and-piston assembly, wherein upon full engagement of said locking shoe with said locking channel said crank-and-piston assembly is in a substantially top-dead-center position, thereby immobilizing said locking shoe until said crank link is moved away from said position, an axial translation component including at least one guide post on said door cooperating with a guide channel in said chassis for in-and-out movement of said door relative to said chamber access opening, an angular translation component including a hinge means for connecting said chassis with said chamber body and for swinging said chassis and door away from said chamber central axis when said door is in a withdrawn position, first interlock means for preventing axial translation of said door if said door is not correctly aligned with said chamber central axis for opening and closing, and second interlock means for preventing angular translation of said door if said door is not substantially fully withdrawn from said chamber access opening.