Insulated container

Claim 1

A CONTAINER FOR STORING AND TRANSPORTING LIQUEFIED GAS AT EXTREME TEMPERATURE COMPRISING AN ELONGATED CYLINDRICAL OUTER SHELL, AN INNER TANK OF CORRESPONDING SHAPE, SAID INNER TANK BEING SUSPENDED IN VACUO WITHIN SAID OUTER SHELL, A MANWAY NOZZLE RIGIDLY CONNECTING SAID INNER TANK CENTRALLY OF ONE OF ITS ENDS TO THE CORRESPONDING END OF SAID OUTER SHELL, SAID MANWAY NOZZLE EXTENDING COAXIALLY WITH SAID INNER TANK BETWEEN SAID INNER TANK AND SAID OUTER SHELL ENDS, SAID INNER TANK BEING SUSPENDED BY TANK SUPPORTS, SAID TANK SUPPORTS BEARINGLY ENCOMPASSING SAID INNER TANK AT ITS OTHER END AND HAVING FLEXIBLE TANGENTIAL EXTENSIONS TO CIRCUMFERENTIALLY SPACED POINTS OF CONNECTION TO SAID OUTER SHELL, SAID MANWAY NOZZLE HAVING DETACHABLE SEALED CLOSURES ADJACENT ITS ENDS, AND HAVING AN INTERMEDIATE DETACHABLY SEALED CLOSURE INTERMEDIATE ITS ENDS, SAID SEALED CLOSURES FORMING WITH SAID NOZZLE A FIRST VAPOR PRESSURE SEALING COMPARTMENT ADJACENT SAID TANK AND A SECOND COMPARTMENT ADJACENT SAID SHELL, AND PRESSURE RELIEF MEANS CARRIED BY SAID INTERMEDIATE CLOSURE TO VENT PRESSURE FROM SAID FIRST COMPARTMENT INTO SAID SECOND COMPARTMENT.