Ammunition cartridge case

Details Ammunition cartridge case Ammunition cartridge case

1986-02-03

1987-07-21

Tudor, Harold J.

Ammunition and explosives

Cartridges

Case

102430, 102434, F42B 526

Patent

active

046810382

ABSTRACT:
An ammunition round cartridge case having a stress riser in the form of at least one elongated recess adapted for preserving the seal of ignition gases within the cartridge case during initial stages of ignition and also adapted for allowing a splitting of the cartridge case wall surface at peak gas pressure within the cartridge case during firing whereby to permit easy extraction or push-through ejection of the cartridge case from the gun chamber subsequent to firing of the round. A preferred embodiment utilizes a unitary recess that is parallel to the longitudinal axis of the cartridge case, longer than one-half of the length of the cartridge case and which has a triangular cross-section the apex of which extends more than halfway into the wall surface of the cartridge case.

REFERENCES:
patent: 3435765 (1969-04-01), Gawlick
patent: 3882778 (1975-05-01), Gawlick et al.
patent: 4024819 (1977-05-01), Schirneker
patent: 4197801 (1980-04-01), La Fever

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