Airbag filter assembly and method of assembly thereof

Details Airbag filter assembly and method of assembly thereof Airbag filter assembly and method of assembly thereof

B - Operations, Transporting

60

R

B60R 21/16 (2006.01) B01D 39/20 (2006.01) B01D 46/24 (2006.01) B60R 21/26 (2006.01)

Patent

CA 2220915

An efficient, ligth-weight airbag inflation filter (50) includes a gas- permeable, substantially rigid support tube (56) having a plurality of uniform perforations (58) therethrough. A filtering element (62) formed from a continuous inorganic ceramic yarn or roving is helically cross-wound around the support tube (56) to form one or more layers covering the perforations (58) of the support tube (56). A wire screen (60), having openings therethrough smaller than the perforations (58) in the support tube (56), is disposed between the filtering element (62) and the support tube (56) to act as a gas diffusion layer for the gases passing through the inflation filter (50).

Filtre (50) de gonflage pour airbag, efficace et léger, comportant un tube support (56) sensiblement rigide, perméable aux gaz, présentant une pluralité de perforations (58) uniformes. Un élément filtrant (62) constitué d'un fil ou d'une mèche continus de céramique inorganique est croisé en hélice autour du tube support (56) pour former une ou plusieurs couches recouvrant les perforations (58) de ce dernier. Un crible métallique (60) présentant des orifices plus petits que les perforations (58) pratiquées dans le tube support (56) est disposé entre l'élément filtrant (62) et le tube support (56) pour faire office de couche de diffusion de gaz pour les gaz passant à travers le filtre (50) de gonflage.

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