Container and two-piece closure therefor

Claim 1

A HERMETICALLY SEALED PACKAGE COMPRISING, IN COMBINATION, A CONTAINER HAVING A NECK PORTION OF CIRCULAR CROSS SECTION WITH A SCREW THREAD FORMED ON THE EXTERNAL SURFACE THEREOF, A SEALING SURFACE ADJACENT THE OPEN END OF SAID NECK, A LID INCLUDING A GENERALLY DISC-SHAPED END PANEL HAVING A DEPENDING ANNULAR SKIRT INTEGRALLY FORMED AROUND ITS PERIPHERY, SAID SKIRT TERMINATING IN AN INWARDLY TURNED BEAD, A SEALING GASKET IN SAID LID ADJACENT SAID SKIRT IN POSITION TO ENGAGE AND FORM A HERMETIC SEAL WITH SAID SEALING SURFACE, AND A RETAINING AND LIFTING RING HAVING AN ANNULAR BODY PORTION ROLL FORMED ONTO SAID EXTERNAL SCREW THREADS AND TERMINATING AT ONE END IN AN INWARDLY DIRECTED FLANGE OVERLYING A PORTION OF SAID END PANEL ADJACENT THE OUTER PERIPHERY THEREOF, AND AN INWARDLY DIRECTED ANNULAR BEAD FORMED AROUND SAID BODY PORTION AND EXTENDING BENEATH SAID BEAD ON SAID SKIRT IN POSITION TO ENGAGE SAID BEAD ON SAID SKIRT TO LIFT SAID LID FROM SAID CONTAINER UPON UNSCREWING SAID RING FROM SAID NECK.