Importance

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Abstract

A curtain airbag that can be inflated with gas from an inflator and deployed along a side surface of a vehicle cabin. The curtain airbag includes, in an occupant restraint area corresponding to an occupant's position, a multistage chamber section comprising an upper chamber that is arranged at an upper side; a lower chamber that is arranged below the upper chamber; and a discharge passage that is arranged at a middle portion in a vertical direction between the upper chamber and the lower chamber. The discharge passage communicates with at least one of said upper chamber and said lower chamber to discharge gas from said upper chamber and/or said lower chamber through the discharge passage and is adapted to reduce its cross section when pressed by the occupant's head.

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First Claim