Patent ID: 6247411
Filing Date: 2001-06-19
Classification: F41A,F42B

Abstract:
An electric contact assembly in combination with a cartridge to be fired from a weapon barrel; said cartridge comprising(a) a longitudinal axis;(b) a cartridge case including a metal bottom having an externally exposed outer face; and(c) an electronic unit disposed in said cartridge case; said electric contact assembly comprising(a) a contact arrangement for establishing an electric connection between said electronic unit and an evaluating and control apparatus situated externally of said cartridge; said contact arrangement including(1) a contact ring disposed in said bottom and surrounding said axis; said contact ring having an outer face being approximately flush with said outer face of said bottom; and(2) an insulation electrically insulating said contact ring from said bottom;(b) a magnetic field sensor for emitting a signal upon closing a breechblock of the weapon in which the cartridge is positioned; and(c) a switch connected between said electronic unit and said contact ring and having an open state in which electric connection between said contact ring and said electronic unit is interrupted and a closed state in which electric connection between said contact ring and said electronic unit is maintained; said magnetic field sensor being connected to said switch for placing said switch into said closed state solely in response to said signal.