Variable inside shoulder polymer cartridge
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United States of America Patent
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Oct 28, 2014
Grant Date -
Mar 6, 2014
app pub date -
Dec 19, 2012
filing date -
Jan 14, 2011
priority date (Note) -
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Abstract
A high strength polymer-based cartridge casing can include a first end having a mouth and a neck extending away from the mouth. Next, a shoulder extends below the neck and away from the first end. An inside of the shoulder can be shaped in at least one of a convex or concave shape. The shoulder can have unequal outside and inside shoulder angles. Further, the inside shoulder can be textured or coated.
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