Patent ID: 7681913

Claim:
An air bag system comprising: an inflator operable to release inflation fluid; an inflatable cushion, said cushion being inflatable upon release of inflation fluid from said inflator; an air bag housing substantially surrounding said cushion, said housing having a vent for venting inflation fluid released by said inflator; a first plate including a first portion defining at least a first opening with a nonzero area and a second portion defining at least a second opening with a nonzero area; and a second plate including a first portion defining at least a first opening and a second portion defining at least a second opening; wherein said first plate is movable from a first position, wherein said first opening of said first plate is aligned with said vent, to a second position, wherein said second opening of said first plate is aligned with said vent; and wherein said second plate is movable from a first position in which said first opening of said second plate is aligned with said vent, to a second position in which said second opening of said second plate is aligned with said vent.