Accession Number : ADD017381

Title :   Mechanical Shielding for Electric Primer.

Descriptive Note : Patent, Filed 2 Apr 93, patented 8 Nov 94,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Goetz, Raymond J

Report Date : 08 Nov 1994

Pagination or Media Count : 7

Abstract : An electric primer for cartridge ammunition is designed to minimize antenna coupling, capacitive coupling, and aperture coupling of stray electromagnetic radiation thereinto to avoid accidental primer detonation with resulting ignition of cartridge propellant. The primer is provided with a button electrode deeply recessed totally behind a small diameter access aperture which physically guards the button electrode from antenna and capacitive coupling while allowing activating plunger entry. Furthermore, the small opening channels stray radiation about its periphery rather than admitting it to the button electrode. (MM)

Descriptors :   *ELECTROMAGNETIC RADIATION, *ELECTROMAGNETIC SHIELDING, *PATENTS, *CARTRIDGES, *ELECTRIC PRIMERS, ELECTRODES, SHIELDING, IGNITION, DETONATIONS, MECHANICAL COMPONENTS

Subject Categories : Electromagnetic Shielding
      Ammunition and Explosives

Distribution Statement : APPROVED FOR PUBLIC RELEASE