| 摘要 |
An apparatus (10) for helping to protect an occupant of a vehicle (12) that has a side structure (16) and a roof (18) includes an inflatable curtain (14) inflatable away from the roof adjacent the side structure of the vehicle. A pretensioner (150) connects the curtain (14) to the vehicle (12) and includes rotational element. The inflatable curtain (14) is connected to the rotational element and upon deployment applies a force to the rotational element that causes the rotational element to rotate. The rotational element is configured such that angular momentum causes the rotational element to continue to rotate and thereby tension the inflatable curtain (14).
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