Internal pressure relieving device for anti-armour ammunition
AssigneeSaab AB
InventorsNiclas Ljungwald, Peter Tuikkanen
Life of this patent
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Abstract
An internal pressure relieving device for anti-armour ammunition. The device is mainly adapted for use with barrel-loaded ammunition, that is a naked round including a cartridge case, which normally would be located in its packaging. A plurality of slot formed openings have been cut out through a wall of the cartridge case and the openings have been sealed by inserts of polymeric plastic introduced with a tight fit into each opening. Hence, by the characteristics of the plastic material, the inserts can be configured to open up at a predetermined level of temperature. Alternatively, the inserts open up at a predetermined level of pressure in the cartridge case.
Claims6
A device for preventing an unintentional increase of internal pressure in a round of ammunition comprising a shell, the device comprising:
- a base plate;
- a cartridge case assembly comprising a cartridge case to be loaded in a barrel of an anti-armour non-disposable weapon, the cartridge case comprising a wall joined to the base plate and comprising a plurality of openings through the wall, wherein the openings are evenly distributed about the wall, and wherein a cross-sectional area of the openings is substantially equal to a cross-sectional area of the base plate;
- and
- a plurality of safety members sealing said openings and configured to open up at a predetermined level of pressure.
Dependencies are inferred from the claim text.