Patent ID: 6272993
Filing Date: 2001-08-14
Classification: F42B,F42C

Abstract:
An electric primer for small arms ammunition comprising:(a) an electrically conductive cup having an open top and a bottom having an aperture formed in the bottom;(b) an electrically insulating liner within the cup, the liner formed from at least one polymeric material resistant to chemicals, having an Impact Toughness of at least about 1.12 ft-lb/in, a Heat Distortion Temperature at 264 psi stress of at least about 289.degree. F., and a Modulus of Elasticity of at least about 319,000 psi;(c) at least one electrically conductive explosive composition within the insulating liner and the cup;(d) an electrically conductive contact positioned between the explosive and the bottom of the cup, the contact having a portion extending toward the aperture in the bottom of the cup; and(e) a retaining means on top of the explosive; wherein the liner is positioned to electrically insulate the cup from the contact, and wherein the liner has at least one means for retaining the electrically conductive contact within the cup after discharge of the explosive.