US Patent 7204536 Pivot out room for vehicle

A recreational vehicle has pivot out rooms across the hallway from one another, at least partially overlapping from side to side along the length of the vehicle and arranged so that when they are retracted they create a hallway that has generally parallel sides. A thrust bearing supports the weight of each pivot out room and the hinge axis is inside of the vehicle so as to move the seal flange of the pivot out room out away from the recreational vehicle wall so as not to destroy the seals upon opening and to create a seal upon opening. A cog drive can be used to drive the room in and out and bear some of the room weight.