Chairs and seats – Bottom or back with means to alter contour – Providing support for lower back region
Patent
1997-05-19
1998-06-30
Nelson, Jr., Milton
Chairs and seats
Bottom or back with means to alter contour
Providing support for lower back region
2972846, 297410, 29745249, A47C 3025
Patent
active
057722811
ABSTRACT:
A vehicle seat assembly for an automotive vehicle including a rigid shell seat back, an S-curve plate located between the shell and the back of a seat occupant, the plate having a profile that corresponds to the thoracic region, the mid-spine region and the lumbar region of a seat occupant. A carrier member is situated between the plate and the shell, the plate being hinged on the carrier near the pelvis region of the seat occupant and the carrier being hinged at its lower margin for pivotal motion. A spring suspension for the carrier provides a cushion for forces transmitted to the seat back assembly by a seat occupant, the plate being suspended relative to the carrier by pneumatic springs or bladders at the upper and lower regions of the plate near the thoracic region and the lumbar region, respectively.
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Jr. Milton Nelson
Lear Corporation
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