Ammunition and explosives – Igniting devices and systems – Electrical primer or ignitor
Patent
1980-08-11
1982-06-22
Nelson, Peter A.
Ammunition and explosives
Igniting devices and systems
Electrical primer or ignitor
1022753, F42C 1500
Patent
active
043356524
ABSTRACT:
The ignition assembly of a non-electric delay detonator which is adapted for field-assembly with a low-energy detonating cord has an expansion shell provided with a cavity into which the cord is inserted at the time of use. The pressure pulse resulting from the detonation of the cord causes the shell to expand and an ignition charge to be actuated as a result of sudden compression between the expansion shell and a rigid ignition capsule. The burning ignition charge causes the ignition of a delay charge, which in turn ignites a priming charge, causing the base charge to detonate. The presence of ignition charge in an annular spacing between the expansion shell and ignition capsule walls, as well as between the shell and capsule ends, and the proper positioning of a cord-gripping means, preferably in the shell cavity, assure actuation of the ignition charge whether or not the cord is shoved to the bottom of the shell.
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Ascani Diamond C.
E. I. du Pont de Nemours & Company
Nelson Peter A.
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