Igniter plug

Ammunition and explosives – Shells – Grenade

Patent

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Details

102254, 102486, F42B 2700

Patent

active

053558030

ABSTRACT:
Delay igniter plug for pyrotechnic machine, in particular manual or mechanical launch grenade, comprising a body (4) fitted with a control mechanism comprising a trigger lever (1) and a percussion mechanism (28) interacting with a primary pyrotechnic module provided with a primer (3), a retardant composition (9), a primary explosive (13) which are capable of ensuring initiation of the charge of the associated machine which is arranged so that the primary explosive (13) cannot be initiated without going via the retardant composition, the primary pyrotechnic module (5) being axially displaceable in the said body toward the principal charge, means (2) for holding the primary pyrotechnic module (5) axially separated from the principal charge (19) and a screen (12a, 15) interposed between the principal charge and the terminal part of the primary pyrotechnic module containing the primary explosive (13), characterized in that the means (2) for holding the primary pyrotechnic module (5) axially separated from the principal charge (19) are exclusively mechanical means, actuated by the trigger lever (1) and in that the screen interposed between the principal charge and the terminal part of the primary pyrotechnic module (5), comprises a closure cap (15) of a cup (18) containing the principal charge (19) and a pellet (12a) carried by the end of the primary pyrotechnic module (5) containing the primary explosive (13) and engaged in the cap (15), the pellet (12a) and the cap (15) being shaped in order to be made integral with each other in the case of excitation of the primary explosive (13) in the storage position and to create a physical barrier to the shock wave or to the fragments.

REFERENCES:
patent: 2872866 (1959-02-01), Brown et al.
patent: 3505959 (1970-04-01), Lohnert et al.
patent: 3683814 (1972-08-01), Bedall et al.

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