Device for firing an electric detonator

Details Device for firing an electric detonator Device for firing an electric detonator

1974-10-15

1976-10-26

Pendegrass, Verlin R.

Ammunition and explosives

Igniting devices and systems

102 16, 102 28R, 102 702GA, 310 87, F42B 312, F42C 1102

Patent

active

039877299

ABSTRACT:
A device for firing an electric detonator which comprises a pressure deformable sealed waterproof housing containing an electric energy source for ignition of a detonator and means responsive to the deformation of the housing for actuating the energy source. The housing preferably comprises a bellows element and the energy source is preferably a piezoelectric element. The device is useful for multiple shot blasting wherein one explosive charge is initiated by the shock wave from a previously exploded charge.

REFERENCES:
patent: 2917642 (1959-12-01), Wright et al.
patent: 2961507 (1960-11-01), Higgs
patent: 3166684 (1965-01-01), Williams et al.
patent: 3320890 (1967-05-01), Ciccone et al.

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