Bottle closure

Claim 1

A CLOSURE ASSEMBLY FOR USE ON THE EXTERNALLY THREADED TUBULAR DISCHARGE MEMBER OF A CONTAINER HAVING AN EXTERNAL DIAMETER AND IN INTERNAL BORE THAT MAY VARY IN DIAMETER BETWEEN A PREDETERMINED MAXIMUM AND A PREDETERMINED MINIMUM VALUE, SAID ASSEMBLY INCLUDING: A CAP HAVING A CIRCULAR TOP FROM WHICH A CYLINDRICAL SIDE WALL DEPENDS, SAID SIDE WALL HAVING THREADS FORMED ON THE INTERIOR THEREOF FOR ENGAGING SAID EXTERIOR THREADS ON SAID DISCHARGE MEMBER, AND SAID TOP HAVING A RECESS FORMED THEREIN THAT EXTENDS UPWARDLY FROM THE LOWER SURFACE THEREOF AND DEFINES A SURROUNDING WALL; AND A FORMED CIRCULAR SHEET OF RESILIENT MATERIAL DEFINING A CENTRAL AREA FROM WHICH A CONTINUOUS WALL EXTENDS DOWNWARDLY TO DEVELOP INTO AN ANNULUS-SHAPED WEB HAVING A CONVEX LOWER SURFACE, THE OUTER EDGE OF WHICH WEB DEVELOPS INTO A RING-SHAPED FLANGE WITH THE INTERNAL DIAMETER OF SAID FLANGE BEING SLIGHTLY GREATER THAN SAID PREDETERMINED MAXIMUM DIAMETER OF SAID BORE, SAID CONTINUOUS SIDE WALL BEING REMOVABLY DISPOSABLE WITHIN SAID RECESS TO ENGAGE THE SURROUNDING WALL THEREOF TO HOLD SAID FORMED SHEET AT A FIXED POSITION RELATIVE TO SAID CAP WHEN SAID SHEET IS DISPOSED WITHIN THE CONFINES OF SAID SIDE WALL, WITH SAID FORMED SHEET EFFECTING A FIRST SEAL WHEN A CIRCUMFERENTIALLY EXTENDING SEGMENT OF SAID LOWER WEB CONVEX SURFACE CONTACTS AN UPPER INTERIOR SURFACE OF SAID BORE AS SAID CAP IS SCREWED DOWNWARDLY ON SAID NECK, AND A SECOND SEAL BEING FORMED AS SAID CAP CONTINUES TO BE SCREWED DOWNWARDLY ON SAID NECK WHEN AT LEAST A PORTION OF THE UPPER SURFACE OF SAID FLANGE IS PRESSURE CONTACTED BY THE INTERIOR SURFACE OF SAID CAP TOP TO PRESS THE LOWER SURFACE OF SAID FLANGE IN SEALING CONTACT AGAINST THE TOP SURFACE OF THE TUBULAR DISCHARGE MEMBER, SAID FORMED SHEET ALSO HAVING A PORTION OF THE SURFACE AREA OF THE LOWEER CONVEX SURFACE IN SEALING CONTACT WITH THE TOP SURFACE OF THE TUBULAR DISCHARGE MEMBER WHEN SAID DIAMETER OF SAID BORE IS LESS THAN SAID PREDETERMINED MAXIMUM.