US12366438 - Base part for producing a cartridge case and cartridge case, method for producing a base part for a cartridge case, and method for producing a cartridge case

This patent describes a base part for cartridge cases featuring a case base designed to hold a primer and an extractor recess with a polygonal geometry for improved production efficiency. The design includes a cylindrical portion adjacent to the extractor recess, enhancing the structural integrity of the cartridge case.

Claim 1

1. A base part for producing a cartridge case, the base part comprising: a case base for receiving a primer cap, said case base having a circumferential extractor recess formed therein on an outer circumference of the base part, said circumferential extractor recess having a polygon geometry being formed from a closed traverse in cross section, said case base having a cylindrical portion adjacent said circumferential extractor recess. a case base for receiving a primer cap, said case base having a circumferential extractor recess formed therein on an outer circumference of the base part, said circumferential extractor recess having a polygon geometry being formed from a closed traverse in cross section, said case base having a cylindrical portion adjacent said circumferential extractor recess.

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USPTO PDF

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