Mechanical shielding for electric primer

Details Mechanical shielding for electric primer Mechanical shielding for electric primer

1992-04-27

1993-05-04

Brown, David H.

Ammunition and explosives

Cartridges

Case

1022025, F42B 508, F42C 1912

Patent

active

052084230

ABSTRACT:
An electric primer for cartridge ammunition (e.g., Phalanx 20 mm cartridg is designed to minimize antenna coupling, capacitive coupling, and aperture coupling of stray electromagnetic radiation thereinto for avoiding accidental primer detonation with resulting ignition of cartridge propellant. The primer is provide with a button electrode which is deeply recessed totally behind a small diameter access aperture which physically guards the button electrode from antenna and capacitive coupling. Furthermore, the small opening channels stray radiation about its periphery rather than admitting it to the button.

REFERENCES:
patent: 3018732 (1962-01-01), Tognola
patent: 3090310 (1963-05-01), Peet et al.
patent: 3455244 (1969-07-01), Ballreich et al.
patent: 4329924 (1982-05-01), Logofun
patent: 4386567 (1983-06-01), Ciccone et al.
patent: 4605453 (1986-08-01), Spear et al.

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