Patent ID: 8266746

Claim:
An adjustable mattress, comprising: a support member including an upper section, a middle section and a lower section, wherein the middle section is pivotally connected to both the upper section and to the lower section, wherein the upper section, the middle section and the lower section are coplanar when the adjustable mattress is in a flat configuration; a top foam layer with a top surface; a bottom foam layer with a bottom surface, wherein the support member is disposed between the top surface of the top foam layer and the bottom surface of the bottom foam layer; a balancing bar with a bottom surface, wherein the bottom surface of the balancing bar is coplanar with the bottom surface of the bottom foam layer beneath the middle section, wherein the balancing bar extends at least one third of the way under the upper section when the adjustable mattress is in a flat configuration, and wherein the balancing bar extends less than half way under the upper section when the adjustable mattress is in the flat configuration; and a mattress cover that encases the top foam layer, the support member, the bottom foam layer and the balancing bar, wherein the mattress cover is stretchable, wherein the bottom surface of the balancing bar lies in a plane, and wherein the mattress cover stretches between the balancing bar and the bottom foam layer beneath the upper section of the support member when the upper section is inclined from the plane of the bottom surface of the balancing bar.