Reservoir with seal for liquefied gas storage

Claim 1

A RESERVOIR FOF STORING A LIQUEFIED GAS COMPRISING A CONTINUOUS FLUID-IMPREVIOUS UPRIGHT MEMBRANE DEFINING AN ENCLOSING SIDEWALL OF THE RESERVOIR, SAID MEMBRANE HAVING VERTICAL CORRUGATIONS EXTENDING FROM THE BOTTOM OF THE MEMBRANE TO THE UPPER REGION OF THE MEMBRANE AND HORIZONTAL CORRUGATIONS IN THE UPPER REGION OF THE MEMBRANE ABOVE THE VERTICAL CORRUGATIONS, A REGION INTO WHICH THE LOWER END OF THE MEMBRANE EXTENDS, WHICH REGION CONTAINS A MATERIAL WHICH IS LIQUID AT AMBIENT TEMPERATURE BUT WHICH IS SOLID WHEN THE MEMBRANE IS IN CONTACT WITH A LIQUEFIED GAS, A PLURALITY OF VERTICAL ELONGATE STRUCTURAL MEMBERS SECURED TO THE MEMBRANE AT THE TROUGHS OR CRESTS OF THE VERTICAL CORRUGATIONS, SAID MEMBERS BEING SPACED AT INTERVALS SUFFICIENTLY CLOSE AND OF LENGTH FOR THE MEMBRANE TO BE STABLE AGAINST HYDROSTATIC FORCES EXERTED THEREON, A FIXED SUPPORTING WALL SURROUNDING THE MEMBRANE AND SPACED THEREFROM, FASTENING MEANS SLIDABLY SECURING SAID STRUCTURAL MEMBERS TO THE WALL, A FLEXIBLE COVER CONNECTED TO THE WALL AND THE MEMBRANE ABOVE SAID FASTENING MEANS AND PROVIDING THEREBENEATH BETWEEN SAID MEMBRANE, SAID WALL AND SAID MATERIAL IN SAID SECOND NAMED REGION A SEALED SPACE, INERT GAS FILLING SAID SPACE AND FLUID PASSAGE MEANS FOR CONVEYING SAID GAS BETWEEN THE SPACE AND THE EXTERIOR OF RESERVOIR IN EITHER DIRECTION.