Livbag S.n.c.

Livbag S.n.c. Centre De Recherches Du Bouchet

Jean-Pierre Vedel

Jean-Ren&eacute; Duguet

Jean-Rene Duguet

Thin-film bridge electropyrotechnic initiator with a very low operating energy

The electropyrotechnic igniter ( ) comprises a body divided into a downstream chamber and an upstream chamber by a discoid metal piece ( ), the downstream chamber containing a resistive heating element ( ), a pyrotechnic initiating composition ( ) and a pyrotechnic ignition composition ( ), and the upstream chamber containing a rectangular electronic card ( ) extended by three external metal pins ( to ), on which electronic card conducting tracks are provided. Two metal connection pins ( ) pass through the discoid metal piece ( ) and connect the said conducting tracks to the resistive heating element ( ). A means of intercommunicating and of triggering a train of specific electric pulses as well as a means of storing electrical energy are connected to the conducting tracks. This igniter is more especially intended to be used in motor-vehicle safety, especially for constituting the device for igniting a gas generator associated with an airbag.

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Survilliers, France

Jean-Pierre Vedel