Primer diffuser for polymer ammunition cartridges

Abstract

The present invention provides a diffuser cup or ring adapted to hold a primer used in an ammunition cartridge comprising a bottom surface sized to fit in a primer recess for an ammunition cartridge; a diffuser aperture positioned through the bottom surface and aligned with a flash hole; a cup wall attached to the bottom surface and extending away from the bottom surface; and an interior cavity bordered by the cup wall and the bottom surface and sized to frictionally fit a primer.

What is claimed is: 
     
         1 . A diffuser cup adapted to hold a primer used in an ammunition cartridge comprising:
 a diffuser comprising a bottom surface sized to fit in a primer recess for an ammunition cartridge; and a diffuser aperture positioned through the bottom surface and aligned with a flash hole; and   a cylinder comprising a cup wall attached to sized to frictionally fit a primer and fit into a primer recess, wherein the cup wall is configured to accept the diffuser within the cup wall. the bottom surface and extending away from the bottom surface; and an interior cavity bordered by the cup wall and the bottom surface and sized to frictionally fit the primer.   
     
     
         2 . The diffuser cup of  claim 1 , wherein the diffuser cup comprises a metal, an alloy, a composite or a polymer. 
     
     
         3 . The diffuser cup of  claim 1 , further comprising an adhesive applied to the bottom surface to contact a primer. 
     
     
         4 . The diffuser cup of  claim 1 , further comprising an adhesive applied to the bottom surface to contact the primer recess. 
     
     
         5 . The diffuser cup of  claim 1 , further comprising a primer positioned in the interior cavity. 
     
     
         6 . A diffuser ring adapted to separate a primer and a primer recess in an ammunition cartridge comprising:
 a diffuser ring sized to fit in a primer recess for an ammunition cartridge having a bottom surface opposite a top surface; and   a diffuser aperture positioned through the bottom surface and the top surface to align with a flash hole of the ammunition cartridge.   
     
     
         7 . The diffuser ring of  claim 6 , wherein the diffuser ring comprises a metal, an alloy, a composite or a polymer. 
     
     
         8 . The diffuser ring of  claim 6 , further comprising an adhesive applied to the bottom surface to contact a primer. 
     
     
         9 . The diffuser ring of  claim 6 , further comprising an adhesive applied to the bottom surface to contact the primer recess. 
     
     
         10 . The diffuser ring of  claim 6 , further comprising an adhesive applied to the top surface to contact the primer. 
     
     
         11 . The diffuser ring of  claim 6 , further comprising a primer positioned in the interior cavity.