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Ammunition cartridge case bodies made with polymeric nanocomposite material

  • US 9,091,516 B2
  • Filed: 09/27/2011
  • Issued: 07/28/2015
  • Est. Priority Date: 10/07/2010
  • Status: Active Grant
First Claim
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1. A three-part ammunition cartridge casing body comprising:

  • a base portion, made of metal or polymeric resin, having a closed end and an open end;

    a substantially cylindrical case portion, open on both ends, joined to the open end of the base portion and comprising a nanocomposite material of a nanoclay dispersed in a polyamide resin matrix; and

    a cap portion, made of a nanocomposite material of a nanoclay dispersed in a polyamide resin matrix and glass fibers, joined to the other end of the case portion, wherein the case portion is materially different from and more ductile than the cap portion.

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