Self-contained refrigerating system

Claim 1

SELF-COOLING BEVERAGE CONTAINER COMPRISING AN OUTER CONTAINER CONTAINING A BEVERAGE TO BE COOLED, AN INNER CONTAINER SUBSTANTIALLY COMPLETELY SURROUNDED WITHIN AND SUBSTANTIALLY COMPLETELY SPACED FROM SAID OUTER CONTAINER, SAID INNER CONTAINER BEING A PRESSURE CONTAINER OF SUBSTANTIALLY STRONGER PRESSURE RESISTANT CONSTRUCTION THAN SAID OUTER CONTAINER, SAID INNER CONTAINER CONTAINING A CHARGE OF LIQUID REFRIGERANT UNDER PRESSURE AND FORMING A LIQUID LEVEL THEREIN, SAID INNER AND OUTER CONTAINERS HAVING SHEET METAL EXTENSIONS WHICH ARE SEALED TO ONE ANOTHER INWARDLY OF THE PERIPHERY OF THE OUTER CONTAINER IN SUCH MANNER THAT EVEN IF LEAKAGE IN THE SEAL SHOULD OCCUR, NEITHER CONTAINER CAN LEAK INTO THE OTHER THROUGH SUCH LEAKING SEAL, SAID SEAL BEING FORMED OF PARALLEL UPPER SEALING EXTENSION OF SAID SHEET METAL OTHER, AND INCLUDING AN INNER AXIAL PORTION DISPOSED GENERALLY AXIALLY WITH RESPECT TO THE CONTAINER, AN END PORTION DISPOSED IN AN OUTWARDLY EXTENDING ARC, AN OUTER AXIAL PORTION ARRANGED GENERALLY AXIALLY OUTWARDLY OF SAID INNER AXIAL PORTION, SAID EXTENSION OF SAID INNER CONTAINER HAVING AN END PORTION WHICH IS CURLED INWARDLY AND UPWARDLY WITHIN THE END OF THE SEALING EXTENSION OF THE OUTER CONTAINER.