Patent ID: 8388056

Claim:
An article of furniture, said article comprising: a collapsible frame comprising a pair of armrests, said frame movable from an open orientation, to a collapsed orientation, wherein when said frame is in the open orientation said armrests are substantially parallel and spaced farther apart than when said frame is in the collapsed orientation; a covering comprising only two layers comprising first and second layers of conductive material coupled to said collapsible frame such that a load applied to said covering is transferred to said collapsible frame, said first layer positioned to directly contact the load; at least one heating element positioned between and against said first and second layers of material, said at least one heating element configured to convert electrical energy to thermal energy, wherein said at least one heating element extends through said covering in a serpentine electrical path; at least one electrical connection configured to supply electrical energy to the conductive material of the covering to cause current to flow through substantially all of said covering to facilitate distributing heat through substantially all of said covering; and an electrical storage device coupled to said at least one heating element, said electrical storage device configured to: receive electrical energy photovoltaically; and provide electrical energy to said at least one heating element and said electrical connection.