Apparatus for helping to protect a vehicle occupant's legs

摘要

A safety apparatus (70) for helping to protect an occupant (30) of a vehicle (10) in the event of a vehicle collision comprises an air bag system including at least one inflatable air bag (80) having a deflated condition and an inflated condition. The air bag (80), when inflated, unlocks at least one of the occupant's knees (50) to minimize forces transmitted through at least the corresponding one of the occupant's legs (40) to the occupant's pelvis (36). Seat belt webbing (74) restrains forward movement of the occupant (30) relative to the vehicle (10) when the occupant's knee (50) is unlocked.