Delay detonator

Details Delay detonator Delay detonator

1986-10-21

1989-03-07

Jordan, Charles T.

Ammunition and explosives

Igniting devices and systems

Heat, friction, or chemical primers or ignitors

1022752, 10227512, F42B 316

Patent

active

048096105

ABSTRACT:
A nonelectric delay detonator has means for allowing an ignition flame to be transmitted from an ignition transfer hose to a delay device. The delay device causes a secondary charge to detonate after a predetermined delay time. In order to obtain reproducibile delay times of the delay device, a check valve is arranged between one end of the ignition transfer hose and the delay device; this check valve being opened for a short time period due to the excess pressure in the hose and permitting the ignition flame to pass through. During deflagration of the delay device, the check valve is closed again so that the delay device burns within a closed system. In this manner, undefined pressure and gas losses are avoided.

REFERENCES:
patent: 704465 (1902-07-01), Kirsanov
patent: 3368485 (1968-02-01), Klotz
patent: 4664033 (1987-05-01), Burkdoll et al.

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