Patent ID: 8449037

Claim:
A seating structure comprising: an upper support structure comprising an upper mounting portion; a lower support structure vertically spaced relative to said upper support structure, wherein said lower support structure comprises a pair of spaced apart side mounting portions positioned forwardly of said upper mounting structure and an intermediate mounting portion positioned rearwardly of said side mounting portions; and a flexible member having an upper portion connected to said upper mounting portion and a lower portion connected to said side mounting portions and to said intermediate mounting portion, wherein said flexible member has a forwardly facing concave shape taken along a horizontal plane at a lumbar region of said flexible member, wherein said flexible member has a forwardly facing convex shape taken along a vertical plane at a centerline of said flexible member, and wherein said flexible member comprises side edges extending and tensioned between said upper mounting portion and said side mounting portions, wherein a tension vector directed away from said upper portion and taken along any point of either of said side edges has a forwardly extending component.