US Patent 9550439 Air-suspended seat surfaces for folding vehicle seats

A vehicle seat includes a seatback having a coverstock defining a seat surface with a flexible lower region and a flexible upper region. The seatback further has a compressible upper bladder beneath the coverstock upper region and a compressible inflation bladder positioned beneath the coverstock lower region and in fluidic communication with the upper bladder. A first fixed quantity of a flowable medium is contained in and is partially transferrable between the upper bladder and the inflation bladder.