Inflatible mattress with adjustable internal partitions

Claim 1

An air bed which comprises: (a) an inflatable mattress having a plurality of air chambers; (b) an air valve connected to each of the air chambers of said mattress for applying air pressure therethrough; (c) means for changing the air pressure within the air chambers of said mattress so as to adapt to weight and size of a person disposed on said mattress, wherein said mattress further includes: (d) an inner inflatable bag centrally secured within an outer casing to form three air chambers therein for heat, body and feet of the person disposed on said mattress, wherein said air pressure changing means includes: (f) a rotatable shaft extending transversely through said inner inflatable bag, said shaft having a turn knob formed on each distal end thereof; and (g) a pair of cords each affixed between said shaft and an opposite side of said inner inflatable bag so that when said shaft is rotated manually said cords will wrap around said shaft and pull the sides of said inner inflatable bag towards each other thus changing the size of said inner inflatable bag to change the air pressure in each of the air chambers within said mattress.