Air mattress support system

Claim 1

Support apparatus adapted for supporting a given load upon an irregular surface above the highest irregularity of said surface, comprising: a. a support bag inflated with air to a first pressure, having a first depth; b. an air cushion loosely positioned on top of said support bag and inflated with air to a second pressure less than said first pressure; c. said respective pressures being such that when said load is positioned upon said air cushion, said support bag maintains an air space between said air cushion and the highest irregularity of said irregular surface, and said air cushion maintains an air space between said load and said support bag, said support bag and said air cushion in mutual cooperative combination thereby providing a unitary well stabilized, relatively shockinsensitive suspension system for said load; d. said second pressure being less than one atmosphere. e. said air cushion having a pancake-like center portion having a second depth substantially less than said first depth for supporting said load and an outer bumper portion such that said air cushion is restrained from gross lateral displacement relative to said support bag, said bumper portion adapted to act as a reservoir to receive air from said center portion when a load is placed upon said center portion; f. said support bag being made of a first material having a first thickness and said air cushion being made of a second material of a second thickness less than said first thickness; g. a lubricant positioned between said support bag and said air cushion; h. wherein said outer bumper portion of said air cushion has a form complementary to said support bag, and overhangs around said support bag, and i. straps being connected loosely to said support bag and said air cushion, to insure the non-separation of said support bag and said air cushion.