Delay detonator

Details Delay detonator Delay detonator

1986-10-21

1989-04-04

Kyle, Deborah L.

Ammunition and explosives

Blasting

Contained blasting charge

102204, F42B 316

Patent

active

048175307

ABSTRACT:
A nonelectric delay detonator has, in a casing, a secondary charge as well as a delay device. The delay detonator is initiated by an ignition transfer hose extending into the casing. A partition is arranged between a hose end and the delay device. Ignition of the delay device is effected by the hose by impact or heat. An auxiliary charge (e.g. a primer cap) is located on the other side of the partition, this auxiliary charge ignites a delay charge of the delay device. In this way, the delay device burns in a closed system from which gas and pressure cannot escape into the hose. Thereby the scattering width of the delay times of the detonator is reduced.

REFERENCES:
patent: 2823609 (1958-02-01), Johnson et al.
patent: 2857845 (1958-10-01), Seavey
patent: 3306201 (1967-02-01), Noddin
patent: 3353485 (1967-11-01), Miller et al.
patent: 3460477 (1969-08-01), Heidemann et al.
patent: 3690260 (1972-09-01), Prior
patent: 3724383 (1973-04-01), Gallaghan et al.
patent: 3728965 (1973-04-01), Silvia
patent: 4335652 (1982-06-01), Bryan
patent: 4527481 (1985-07-01), Evans et al.
patent: 4660472 (1987-04-01), Stevens

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