Use of mixed gases in hybrid air bag inflators

C - Chemistry – Metallurgy – 06 – D

Patent

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C06D 5/00 (2006.01) B60R 21/26 (2006.01)

Patent

CA 2263406

Particulate-free non-toxic gases are generated in a hybrid generator device by conducting the ignition of the propellant with an effective oxidizer, using a mixture of a molecular oxygen-containing gas and argon by varying the ratio of the gas to argon to provide only non-toxic reaction products in the exhaust gas. The inventive device includes an initiator (1), which ignites in response to a sensor and gives off hot gas that ignites the ignition charge (2) which causes the main generant charge (8) to combust, generating the inflation gas mixture (3). When the pressure in the gas mixture increases to a certain point, the seal disc (6) ruptures permitting the gas mixture to exit the manifold (4) through the outlet ports (5) and inflate an air bag. The generant container (9) holds the main generant charge (8). All the charges and the inflation gas mixture are enclosed in the pressure tank (7).

Des gaz non toxiques exempts de substances particulaires sont produits dans un générateur hybride par allumage de l'agent propulsif et d'un comburant efficace au moyen d'un mélange de gaz moléculaire oxygéné et d'argon, en modifiant le rapport du gaz à l'argon pour obtenir uniquement des produits de réaction non toxiques dans le gaz d'échappement. Le procédé de l'invention comprend un initiateur (1) qui s'enflamme en réponse à un capteur et libère un gaz chaud, lequel allume une charge d'amorce (2), ce qui provoque la combustion de la principale charge génératrice (8) et la production du mélange de gaz de gonflage (3). Lorsque la montée de la pression dans le mélange de gaz a atteint un certain point, le disque d'étanchéité (6) se rompt, laissant le mélange de gaz sortir du collecteur (4) par les orifices de décharge (5) et gonfler un coussin gonflable de sécurité. Le récipient (9) de la charge génératrice retient la principale charge génératrice (8). Toutes les charges et le mélange de gaz de gonflage sont logés dans le réservoir sous pression (7).

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