Gas bag inflator

B - Operations – Transporting – 60 – R

Patent

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Details

B60R 21/26 (2006.01)

Patent

CA 2076002

An inflator (10) for an air cushion including a pressure vessel (20) comprising a hollow sleeve (22) for storing a quantity of inert gas such as Argon; one end of the sleeve is closed by a first pyrotechnic actuator assembly (80) while the other end of the sleeve may include a closed end or another pyrotechnic actuator assembly (40); the pressure vessel is secured within a diffuser (130) which directs inflation gases into the air cushion; the pressure vessel (20) in cooperation with the diffuser (130) defines var- ious regions which assist in reducing the gas turbulence and heat transfer between the gas and the diffuser (130).

L'invention se rapporte à un gonfleur (10) pour coussins d'air, qui comprend un récipient sous pression (20) comportant un manchon creux (22) destiné à stocker une certaine quantité d'un gaz inerte, tel que l'argon. L'une des extrémités du manchon est fermée par une premier ensemble à actuateur pyrotechnique (80), tandis que l'autre extrémité du manchon peut être constituée par une extrémité fermée ou par un second ensemble à actuateur pyrotechnique (40). Le récipient sous pression est assujetti à l'intérieur du diffuseur (130) qui dirige les gaz de gonflement dans le coussin d'air. Le récipient sous pression (20) définit, en coopération avec le diffuseur (130), diverses régions qui contribuent à réduire les turbulences gazeuses et le transfert de chaleur entre le gaz et le diffuseur (130).

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