Hybrid inflator

Details Hybrid inflator Hybrid inflator

B - Operations, Transporting

60

R

B60R 21/26 (2006.01)

Patent

CA 2090913

ICI 36795 ABSTRACT HYBRID INFLATOR The Invention provides a hybrid inflator for a gas bag safety restraint system for use in a motorized vehicle wherein a compressed supply of stored inert gas is heated by means of a pyrotechnic material in sheet form. The sheeted pyrotechic material may advantageously be located within the compressed gas storage vessel in a thin container or in direct contact with the gas. The invention also includes a heating element for a hybrid inflator. The preferred pyrotechnic material comprises a substrate of an oxidizing polymeric material for example, polytetrafluoroethylene (PTFE), coated with an oxidizable material, for example magnesium, which is capable of reacting exothermally with the oxidizing polymeric material. The invention facilitates simple, cheaper constructions of hybrid inflators and the pyrotechnic sheet produces solid products in very fine particle form which gives improved energy transfer to the stored gas.

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