Igniter element, in particular for pyrotechnical mixtures

F - Mech Eng,Light,Heat,Weapons – 42 – B

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F42B 3/12 (2006.01) B60R 21/26 (2006.01)

Patent

CA 2275461

An igniter element has two contacts (12, 13) which are on the contact side of a support body (11), and which are connected via a resistance element (15). By current feed to the contacts (12, 13), a primer mix (17) is ignited on one active side of the support body (11). The support body (11) is placed in a fixing device (10), whereby the former is fitted with at least one stop spring (18) which catches on a stop shoulder (21) of the holding device. Furthermore, the support body (11) has a recess (22) on the front-side in the region of the stop spring (18), which recess is open in the direction of the active side. After igniting the primer mix (17), pressure builds up on the active side, so that the outer surface (23) of the stop spring (18) is pressed against the inner surface of the fixing device (10).

Elément de mise à feu qui présente sur la face de contact d'un corps de support (11) deux contacts (12, 13) connectés par l'intermédiaire d'une résistance (15). L'apport de courant dans les contacts (12, 13) entraîne la mise à feu d'une composition d'amorçage (17) située sur une face active du corps de support (11). Ce dernier est placé dans un dispositif de fixation (10) et présente au moins un ressort (18) à cran d'arrêt qui vient s'enclencher sur un épaulement d'arrêt (21) du dispositif de fixation (10). Le corps de support (11) est en outre doté, sur une face située dans la zone du ressort (18) à cran d'arrêt, d'un évidement (22) qui est ouvert en direction de la face active. Une fois la composition d'amorçage (17) mise à feu, une pression s'accumule sur la face active, si bien que la surface externe (23) du ressort (18) à cran d'arrêt est poussée contre la surface interne du dispositif de fixation (10).

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