US Patent 7530640 Layered chair back and chair seat

A chair having a base, a seat support mounted on the base, and a seat back support coupled with the seat support. The chair further includes a seat support assembly coupled with the seat support and a back support assembly coupled with the back support. The seat support assembly is a multi layered piece having a base layer, an intermediate layer, a gel pad, a tail pad, and a top layer. Once assembled the seat support assembly has a relief area that corresponds to the tail bone region of the user. The back support assembly is multi layered piece having a base layer, an intermediate layer, a support pad assembly, and a top layer. The ordering of the layers and the orientation of the support pad assembly provide support to the user without any direct or focalized pressure being distributed to specific regions of the body.