Wrapped laminated felted monolithic combustible cartridge case

Claim 1

A wrapped laminated felted monolithic combustible cartridge case for a fully telescoped round of ammunition comprising, in combination: a laminated propellant charge of substantially cylindrical configuration with an axial bore therethrough and having a plurality of concentric layers, the first of said concentric layers being an inner layer comprising a series of laminations of sheet combustible material having an inside diameter substantially equal to the outside diameter of the projectile in said telescoped round and wrapped to a predetermined thickness, a first deterrent film on the outer surface of said first concentric layer, the second of said layers being a midlayer immediately adjacent the outer surface of said first deterrent film, said midlayer comprising a series of laminations of sheet combustible material wrapped to a predetermined thickness, a second deterrent film on the outer surface of said second concentric layer, and the third of said layers being an outer layer immediately adjacent the outer surface of said second deterrent film, said outerlayer comprising a series of laminations of sheet combustible material wrapped to a thickness equal to the outside diameter of said cartridge case, said first and second deterrent films operating to moderate the flame penetration to each of the next adjacent layers of combustible material, thereby effectively controlling the rate of gas generation to provide increased muzzle velocity without substantially increasing the peak pressure.