Patent ID: 8418621
Filing Date: 2013-04-16
Classification: F42B

Abstract:
1. A cartridge ammunition comprising an unsplined projectile and a cartridge shell receiving it, both of which define a longitudinal direction of said ammunition, the cartridge ammunition being adapted to be magazined in a belt for an automatic firearm and the cartridge shell having a bottom with a radially disposed bottom flange, the bottom flange having a given width in said longitudinal direction, wherein the cartridge shell has at least one recess adjacent to the bottom flange which is configured and disposed in such way that the bending elasticity of the bottom flange is increased, said recess having a depth in said cartridge shell which is equal to or greater than said width of said bottom flange and being disposed at a distance from said bottom flange which provides bending elasticity while maintaining sufficient strength in the cartridge shell to withstand the mechanical stress of automatically unbelting the ammunition.