Chairs and seats – Crash seat – Force-absorbing means incorporated into back
Patent
1998-06-22
1999-05-11
Cranmer, Laurie K.
Chairs and seats
Crash seat
Force-absorbing means incorporated into back
297488, 297DIG8, 280734, 2807301, B60N2/42
Patent
active
059020105
ABSTRACT:
An apparatus (10) includes a vehicle seat back (26) having front and rear sides (40, 42). A bladder (50) is arranged between the front and rear sides (40, 42) of the seat back (26) in a deployed condition from which is it substantially inextendible by internal fluid pressure forces. The bladder (50) is contractible from the deployed condition by forces applied to the rear side (42) of the seat back (26) by a vehicle occupant moving behind the seat back (26) under ordinary vehicle operating conditions. The apparatus (10) responds to a crash-indicating condition by providing the bladder (50) with an elevated internal fluid pressure. The bladder (50) then provides a fluid pressure force for restraining forward movement of the vehicle occupant against the rear side (42) of the seat back (26) under the influence of a vehicle crash force.
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Cranmer Laurie K.
TRW Inc.
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