Patent ID: 6601919
Filing Date: 2003-08-05
Classification: B60N

Abstract:
A seat arrangement comprising:a seat frame (5) providing a seat back; an upholstery supporting means comprising a platform element formed by a pair of spaced apart side rails (1) between which are anchored transverse supporting elements (3) that are resiliently extensible to allow limited transverse stretching of the platform element; the side rails (1) being linked to the seat frame (5) by substantially inextensible link means (6), and also being linked by adjustable link means (9) which are operable for tensioning said transverse supporting elements (3) via at least one of said side rails (1) to provide adjustable lumbar support in the back seat; at least two of said adjustable link means being provided at intervals spaced apart in the longitudinal direction of the seat back, and the spaced apart adjustable link means being individually operable such that differential adjustment of said spaced apart link means varies the profile of the platform element to provide a lumbar support that is adjustable both in degree and in position along the longitudinal axis of the platform element.