Patent ID: 8297190

Claim:
A cartridge assembly for breaching a door without a shaped charge, comprising: (a) a cartridge case containing a first propellant and a primer in its rearward end for initiating combustion of said first propellant; (b) a cartridge body having a rearward end in locking engagement with a forward end of said cartridge case, a channel located in the cartridge body, said channel containing an extrudable explosive, a piston in slidable engagement in said channel, said piston positioned in a forward end of said channel, said piston being forward of said extrudable explosive contained in said channel, whereby rearward movement of the piston forces extrudable explosive rearwardly and radially outwardly through extrusion ports into a cavity inside of the cartridge body where a bladder is stowed, said piston having a rearwardly projecting detonator pin which upon movement to a rearward most position engages a rearward escapement and detonator, said rearward escapement and detonator in turn initiates detonation of explosive in the bladder, and (c) a fuse attached to a forward end of said cartridge body, said fuse being connected to a forward escapement which detonates either upon impact or at a pre-selected distance from a door to be breached, said forward escapement initiating combustion of a second propellant positioned forward of said piston, whereby combustion gases from said second propellant force said piston rearwardly which in turn forces explosive in the channel rearwardly and radially outwardly through extrusion ports, thereby filling the bladder with explosive.