Patent ID: 6991291

Claim:
A seating unit comprising: a base assembly; a seat on the base assembly; a back support operably interconnected to the base assembly for movement between an upright position and a reclined position, the back support including a back frame and a back shell; the back frame having a first attachment coupling an upper area of the back shell to the back frame, and a plurality of pivotal second attachments for pivotally coupling the lower area of the back shell to the back frame; the back shell having front and rear surfaces and comprising a resiliently flexible polymeric sheet shaped to and adapted to support a back of a seated user, the back shell having a semi-rigid lower area, a flexible area disposed above the lower area, and a semi-rigid upper area disposed above the area; and a force-generating mechanism pressing on the rear surface of the back shell so as to bias the flexible area of the back shell forwardly so as to support a seated user.