Electromagnetic and electrostatic insensitive blasting caps, squ

Details Electromagnetic and electrostatic insensitive blasting caps, squ Electromagnetic and electrostatic insensitive blasting caps, squ

1979-12-19

1983-04-05

Nelson, Peter A.

Ammunition and explosives

Igniting devices and systems

Electrical primer or ignitor

1022029, 10220212, F42C 1100

Patent

active

043787380

ABSTRACT:
A broad band attenuator having a ferrite material for absorption of stray electromagnetic radiation minimizes the unintentional initiation of electroexplosive devices. In one embodiment, each input lead of a detonator passes through a ferrite choke core in contact with the metallic casing that houses the detonator. A printed circuit tape between the input leads and the casing provides electrostatic protection, and heat generated by the ferrite choke core is removed by radiation from the metal casing.

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patent: 3985078 (1976-10-01), Hart et al.
patent: 4220088 (1980-09-01), Kimura et al.
Eng. Design Handbook, Explosive Series, Explosive Trains, AMCP 706-179, pp. G2-3 (1974).
Aerospace Ordinance Handbook, Pollard et al., Prentice-Hall, Inc., pp. 435-439.

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