Combination explosive primer and electro-explosive device

Details Combination explosive primer and electro-explosive device Combination explosive primer and electro-explosive device

1994-09-27

1996-01-23

Tudor, Harold J.

Ammunition and explosives

Cartridges

Case

1022021, 1022022, 102210, F42B 508

Patent

active

054857880

ABSTRACT:
A system (10) for detonating an electro-explosive device (EED) (46) includes a primer (40, 70) connected to an expansion chamber (36) by a shaped vent passage (38). A releasably retained element (60) within the expansion chamber (36) is propelled by expanding gas from the detonated primer to impact a piezoelectric crystal (48) in circuit with the EED (46). Particular safety arrangements are disclosed which prevent the application of voltage from the crystal to the EED until the system is intentionally activated. Some of these arrangements also prevent electromagnetic interference and stray field voltages from reaching the EED.

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