Hermetically sealed container

Claim 1

A SEALED CONTAINER, COMPRISING IN COMBINATION: A HOLLOW NON-METALLIC CONTAINER BODY OF GENERALLY CYLINDRICAL FORM HAVING AN END OPENING AT AT LEAST ONE END THEREOF, SAID CONTAINER HAVING A FLAT ANNULAR RADIAL END SURFACE AND AN EXTERIOR ANNULAR RIB ADJACENT SAID END SURFACE; SAID RIB HAVING AN AXIALLY OUTER FRUSTO-CONICAL SEALING SURFACE PORTION TAPERING TOWARD THE RADIAL END SURFACE, A ROUNDED SURFACE PORTION AT ITS MAXIMUM DIAMETER, AND AN AXIALLY INNER FRUSTO-CONICAL SEALING SURFACE PORTION TAPERING TOWARD THE OUTER SIDE OF THE CONTAINER BODY; A METALLIC CLOSURE FOR THE END OPENING OF THE CONTAINER BODY, SAID CLOSURE HAVING A CIRCULAR END PANEL OF A DIAMETER GREATER THAN THE MAXIMUM DIAMETER OF SAID RIB, A CIRCUMFERENTIAL CYLINDRICAL SKIRT EXTENDING AXIALLY INWARDLY BEYOND THE INNER FRUSTO-CONICAL PORTION OF SAID RIB, SAID SKIRT HAVING AN OUTWARDLY ROLLED BEAD AT ITS LOWER EDGE; AND AN ANNULAR SEALING STRIP OF RESILIENT MATERIAL DISPOSED WITHIN THE ANNULAR OUTER PORTION OF SAID CLOSURE; THE SEALING STRIP HAVING AN AXIALLY UPPER EDGE OF THE FROM SAID CAP END PANEL TO THE AXIALLY UPPER EDGE OF THE ROLLED BEAD WITHIN SAID SKIRT, THE SEALING STRIP FILLING THE CORNER BETWEEN THE END PANEL AND THE SKIRT PORTIONS OF SAID CAP, TAPERING OUTWARDLY ON ITS INNER SURFACE FROM SAID CAP END PANEL TO SAID BEAD AND HAVING AN ANGLE OF INCLINATION SUBSTANTIALLY MATCHING THE ANGLE OF SAID OUTER FRUSTO-CONICAL SEALING SURFACE PORTION AND SEATING THEREON WHEN THE END PANEL OF THE CLOSURE IS DISPOSED ADJACENT TO BUT SPACED A SLIGHT DISTANCE FROM THE END SURFACE OF THE CONTAINER; IN FINAL ASSEMBLY SEALING POSITION OF THE CLOSURE ON THE CONTAINER, THE SKIRT BEAD AND LOWER END OF THE SKIRT TOGETHER WITH THE THIN LOWER END OF THE SEALING STRIP BEING DISPOSED BENEATH THE AXIALLY INNER FRUSTO-CONICAL SURFACE PORTION OF THE CONTAINER RIB.