9 millimeter cartridge casing with improved deep draw capability

Details 9 millimeter cartridge casing with improved deep draw capability 9 millimeter cartridge casing with improved deep draw capability

1995-04-10

1996-04-16

Tudor, Harold J.

Ammunition and explosives

Cartridges

Case

F42B 528

Patent

active

055072321

ABSTRACT:
There is provided a single piece brass cartridge casing having improved deep drawing capability. The inner bore of the cartridge casing has a plurality of linear portions separated by at least two inflection points. A gradual change in the slope of the interior wall at each inflection point minimizes fracture at the inflection points during deep drawing.

REFERENCES:
patent: 190208 (1877-05-01), Gill
patent: 4483251 (1984-11-01), Spalding
patent: 5094169 (1992-03-01), Evitts
patent: 5187324 (1993-02-01), Ricco, Sr.

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