Air supported structure

Claim 1

AN AIR SUPPORTED BUILDING COMPRISING, (A) A BASE, (B) A PAIR OF UPSTANDING END WALLS POSITIONED WITH CONFRONTING INNER SURFACES IN SPACED RELATION UPON SAID BASE, (C) EACH OF SAID END WALLS BEING SUBSTANTIALLY RIGID AND HAVING A CONTINUOUS OUTWARDLY CONVEX EDGE EXTENDING FROM ONE SIDE OF THE BUILDING TO THE OTHER, (D) A BRACING STRUCTURE INTERCONNECTING SAID END WALLS AND SAID BASE AND ADAPTED TO COUNTERACT AIR PRESSURE EXERTED AGAINST SAID INNER CONFRONTING SURFACES AND TO MAINTAIN SAID RIGID END WALLS IN THEIR UPSTANDING RELATION, (E) A CONTINUOUS FLEXIBLE PLASTIC SHEET JOINED TO SAID END WALLS AT THEIR RESPECTIVE OUTWARDLY CONVEX EDGES AND HAVING DOWNWARDLY AND OUTWARDLY CURVED SIDES TERMINATING IN SPACED LOWER EDGES AT SAID BASE, (F) MEANS SECURING IN AIR TIGHT RELATION EACH OF SAID LOWER EDGES TO SAID BASE FOR THE LENGTH OF SAID SHEET, AND (G) MEANS ADAPTED TO EXERT AN AIR PRESSURE GREATER THAN ATMOSPHERIC WITHIN SAID BUILDING, THE END WALLS ABSORBING SUBSTANTIALLY ALL OF THE LONGITUDINAL STRESSES AND SAID SHEET ABSORBING THE REMAINING LATERAL STRESSES.