Cartridged projectile

摘要

The present invention describes an improved cartridged projectile (100). The cartridged projectile (100) comprises a projectile (110) seating at a mouth of a cartridge case (130). The cartridge case (130) has a base (134) that houses a high pressure chamber (150). A side of the high pressure chamber (150) is capped by a pressure disc (170), which is secured onto the base of the cartridge case by a nozzle ring (160). The nozzle ring (160) has a tapered or conical surface that allows the pressure disc (170) to flex, and a surface (171) of the pressure disc (170) exterior of the high pressure chamber has intersecting V-shaped grooves (172). When propellant in the high pressure chamber (150) is burned efficiently, high pressure gases developing inside the high pressure chamber cause the pressure disc (170) to rupture at a predetermined pressure along the grooves (172) so that the gases propel the projectile (110) out of a barrel at a higher speed of about 100 m/s or more.

主权项

1. A cartridged projectile comprising:
a hollow cartridge case extending from a base; wherein said base comprises
a high pressure chamber formed therein;a threaded hole in communication with the high pressure chamber, with said threaded hole opening into a low pressure chamber defined by an interior of said cartridge case and a rear end of a projectile seated at a mouth of said cartridge case; anda shoulder between the high pressure chamber and the threaded hole; a nozzle ring with an inner surface comprising a tapered or conical bore, with the narrower end of said tapered bore opening into a discharge hole, so that said nozzle ring is seated in said threaded hole and said discharge hole opens into said low pressure chamber; and a pressure disc disposed between said shoulder and said nozzle ring, with a surface of said pressure disc facing the tapered bore being scribed with intersecting V-shaped cross-sectional grooves.