Technique for detecting a leak of air bag inflation gas from a s

Details Technique for detecting a leak of air bag inflation gas from a s Technique for detecting a leak of air bag inflation gas from a s

1997-10-07

1999-04-27

Ellis, Christopher P.

Land vehicles

Wheeled

Attachment

280736, 102530, B60R 2128

Patent

active

058971378

ABSTRACT:
An air bag inflator (10) comprises a vessel (12) having a chamber (30). An air bag inflation gas (32) is stored in the chamber (3). A fill passage (38) is provided in the vessel (12) for directing the air bag inflation gas (32) into the chamber (30). Blocking means (60) is provided in the fill passage (38) for blocking flow of the air bag inflation gas (32) from the chamber (30) through the fill passage. A closure (70) is welded to the vessel (12) and blocks gas flow past the closure. A detectable gas (84), different than the air bag inflation gas (30), is stored in the fill passage (38) between the blocking means (60) and the closure (70). The presence of the detectable gas in the fill passage (38) is checked to determine whether the closure (70) is properly sealed.

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