×

Lightweight polymer ammunition cartridge casings

  • US 9,546,849 B2
  • Filed: 08/27/2013
  • Issued: 01/17/2017
  • Est. Priority Date: 11/10/2010
  • Status: Active Grant
First Claim
Patent Images

1. A polymeric ammunition cartridge comprising:

  • a substantially cylindrical primer insert comprising;

    a top surface opposite a bottom surface and a substantially cylindrical coupling element that extends from the bottom surface,a primer recess in the top surface that extends toward the bottom surface,a primer flash hole aperture positioned in the primer recess to extend through the bottom surface, anda flange that extends circumferentially about an outer edge of the top surface;

    a substantially cylindrical polymeric middle body extending about the substantially cylindrical primer insert, wherein the substantially cylindrical polymeric middle body comprises;

    a substantially cylindrical polymeric bullet-end coupling element at a first end of the substantially cylindrical polymeric middle body opposite a substantially cylindrical polymeric coupling end connected by a powder chamber, wherein the substantially cylindrical polymeric coupling end extends over the substantially cylindrical coupling element and covers an circumferential surface of the primer flash hole aperture; and

    a substantially cylindrical polymeric bullet-end upper portion comprising a bullet-end coupling element connected to the substantially cylindrical polymeric bullet-end coupling element opposite a projectile aperture adapted to engage a bullet.

View all claims
  • 4 Assignments
Timeline View
Assignment View
    ×
    ×