| 摘要 |
An apparatus (10) for helping to protect an occupant (20) of a vehicle (12) includes an inflatable vehicle occupant protection device (14) comprising a panel (114) that at least partially defines an inflatable volume (54) of the protection device. A vent (100) includes a sidewall that extends through the panel (114) and defines a passage (134) for venting inflation fluid from the inflatable volume (54). The vent (100) includes a first portion (102) extendable inside the inflatable volume (54) and an opposite second portion (104) extendable outside the inflatable volume. The vent (100) has an open condition in which the first portion (102) is maintained inside the inflatable volume (54) and thereby permits venting of inflation fluid through the passage (134), and a closed condition in which the first portion (102) is inverted and positioned in the second portion (104) thereby blocking inflation fluid from venting through the passage (134).
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