| 摘要 |
Seat back supports are disclosed including a seat frame, a deformable support surface mounted on the seat frame comprising juxtaposed strips pivotally mounted with respect to each other, and plates for maintaining the deformable support surface in a predetermined orientation, the plates being movable between a first position engaging the juxtaposed strips to maintain the deformable support surface in the predetermined orientation and a second position in which the plate is disengaged from the deformable support surface which is then movable into a different orientation.
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