EMI protected water-activated pressurized gas release apparatus

Details EMI protected water-activated pressurized gas release apparatus EMI protected water-activated pressurized gas release apparatus

1991-09-20

1992-09-15

Griffin, Donald

Electricity: electrical systems and devices

Igniting systems

For explosive devices

441 96, F23Q 702

Patent

active

051483467

ABSTRACT:
Water-activated pressurized gas release apparatus which has enhanced protection from the effects of EMI radiation which may inadvertently cause firing thereof. The apparatus is enclosed in a pair of electrically conductive casings to form a Faraday cage. An interface between the casings which may afford an EMI radiation pathway to the circuitry is blocked to the passage of EMI radiation by a portion of one of the casings which overlaps the interface as a skirt. An EMI filter is provided in the passage between the battery bore and a cavity containing electrical circuitry to shunt EMI radiation passing therein through a capacitor to ground.

REFERENCES:
patent: 4024440 (1977-05-01), Miller
patent: 4768128 (1988-08-01), Jankowiak et al.
patent: 4927057 (1990-05-01), Janko et al.

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