Delay initiator for blasting

Details Delay initiator for blasting Delay initiator for blasting

1987-11-04

1989-04-18

Nelson, Peter A.

Ammunition and explosives

Blasting

Contained blasting charge

1022029, 10220213, 10220214, 1022756, F42B 300

Patent

active

048216461

ABSTRACT:
A novel initiator (blasting cap) for explosives is provided. The initiator, which may be electric or non-electric, comprises a tubular metal shell having within a base charge, a delay train, a priming charge and an ignition means. Interposed between the delay train and the priming charge is an annular collar or ring of resilient material in contact with the inner wall of the metal shell. The construction results in a markedly improved resistance against shock initiation.

REFERENCES:
patent: 2842059 (1958-07-01), Plumley et al.
patent: 2960933 (1960-11-01), Scherrer
patent: 3135200 (1964-06-01), Jackson
patent: 3611939 (1971-10-01), Stadler et al.
patent: 3867885 (1975-02-01), Gawlick et al.
patent: 3885499 (1975-05-01), Hurley
patent: 4718345 (1988-01-01), Yunan

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