Gas refrigerated storage container and insulation system for such containers

Claim 1

A CONTAINER FOR LOW TEMPERATURE STORAGE OF FLUIDS, COMPRISING AN INNER STORAGE CONTAINER FOR CRYOGENIC FLUIDS HAVING CLOSED SIDES AND ENDS AND SUPPORTED WITHIN AN OUTER SHELL WITH ITS SIDES AND ENDS SPACED FROM ENCLOSING SURFACES OF THE SHELL, THE SPACE BETWEEN THE INNER AND OUTER SURFACES BEING GAS EVACUATED, AND A GAS-COOLED INSULATION SYSTEM DISPOSED IN THE SPACE BETWEEN THE INNER AND OUTER SURFACES, SAID SYTEM INCLUDING A LAMINATED BODY OF METAL FOIL AND FIBROS MATERAIL IN ALTERNATE ARRANGEMENT ENCOMPASSING THE INNER CONTAINER, MEANS FOR CONDUCTING BOIL-OFF GASES FROM THE CONTAINED CRYOGENIC FLUIDS IN THE INNER CONTAINER THROUGH A CONTINUOUS SUCCESSION OF SPIRAL TURNS EXTERIORLY OF THE INNER CONTAINER AND EXTENDING SUBSTANTIALLY THROUGHOUT THE LENGTH OF THE SHELL, EACH CONVOLUTION THEREOF DISPSOED AT A DIFFERENT DISTANCE FROM THE INNER CONTAINER THAN THE NEXT ADJACENT CONVOLUTION AND BETWEEN DIFFERENT LAYERS OF THE LAMINATED BODY, WHEREBY A GAS-REFRIGERATING ACTION IS UTILIZED IN HEAT EXCHANGE AT ALL TEMPERATURE LEVELS BETWEEN THE TEMPERATURE OF THE BOILING FLUID AND AMBIENT TEMPERATURE ON THE OUTSIDE OF THE OUTER SHELL IN THE PROGRESSIVE FLOW OF BOIL-OIL GASES THROUGH THE GAS-CONDUCTING MEANS, AND MEANS FOR DISCHARGING SPENT BOIL-OFF GASES FROM THE DOWNSTREAM END OF THE CONDUCTIVE MEANS EXTERIORLY OF THE OUTER SHELL.