Land vehicles – Wheeled – Attachment
Patent
1992-11-25
1994-01-25
Mitchell, David M.
Land vehicles
Wheeled
Attachment
280738, 280743A, 280742, 280736, B60R 2130
Patent
active
052809536
ABSTRACT:
An occupant restraint air bag assembly includes an air bag having a base wall portion communicating with an inflator and a face wall for contacting the occupant upon inflation of the bag. A vent opening is provided in the base wall portion of the air bag for venting a portion of the inflation gas from the air bag to the occupant compartment. A valve flap carried by the air bag is operable to a position closing the vent opening to contain the inflation gas within the air bag. A tether has a first end connected to the valve flap and a second end attached to the face wall so that the inflation of the air bag and consequent displacement of the face wall pulls the tether to close the valve flap. The vent opening is preferably a plurality of spaced apart openings and the tether progressively moves the valve flap across the openings to progressively close the vent opening in response to the progressive travel of the face wall toward the occupant. If desired, one or more additional vent openings with flap valves may be provided and operated by tethers of different operative lengths to provide selected and variable control over the venting of inflation gas from the air bag in response to displacement of the bag.
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Blom Hubert P.
Hawthorn Laura A.
Jensen Jack L.
Melvin John W.
Pettigrove David E.
Ellis Christopher P.
General Motors Corporation
Leahy Charles E.
Mitchell David M.
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