Container closure member and liner therefor

Claim 1

A CLOSURE FOR USE OF THE TUBULAR NECK OF A CONTAINER HAVING AN EXTERNAL DIAMETER AND AN INTERNAL BORE THAT MAY VARY IN DIAMETER BETWEEN A PREDETERMINED MAXIMUM AND A PREDETERMINED MINIMUM VALUE DEFINING A SEALING LIP THEREBETWEEN, COMPRISING: A CAP HAVING A CIRCULAR TOP FROM WHICH A CYLINDRICAL SIDE WALL DEPENDS, SAID SIDE WALL HAVING MEANS FOR ENGAGING THE EXTERIOR OF SAID NECK, AND A SURROUNDING WALL ON THE LOWER SURFACE OF SAID CAP FORMING A RECESS, A LINER OF A FORMED CIRCULAR SHEET OF RESILIENT MATERIAL DEFINING A CENTRAL AREA FROM WHICH A CONTINUOUS WALL EXTENDS DOWNWARDLY TO DEVELOP INTO A WEB HAVING A GENERALLY CONICAL LOWER SURFACE, THE OUTER EDGE OF WHICH WEB DEVELOPS INTO A RAISED BEAD ON THE UPPER SURFACE THEREOF AND A RING-SHAPED RIM HAVING A PORTION LOCATED ON THE OUTSIDE OF SAID BEAD WHICH IS DISPOSED AT AN ANGLE OF LESS THAN 180* WITH RESPECT TO SAID GENERALLY CONICAL LOWER WEB SURFACE, THE HIGH POINT OF SAID BEAD LYING OUTSIDE OF THE CENTER OF SAID SEALING LIP WHEN SAID CLOSURE IS FULLY SEALED, SAID CONTINUOUS SIDE WALL BEING REMOVABLY DISPOSABLE WITHIN THE RECESS TO ENGAGE THE SURROUNDING WALL THEREOF TO HOLD SAID LINER AT A FIXED POSITION RELATIVE TO SAID CAP WHEN SAID LINER IS DISPOSED WITHIN THE CONFINES OF SAID CAP SIDE WALL, SAID LINER EFFECTING A FIRST SEAL WHEN A CIRCUMFERENTIALLY EXTENDING SEGMENT OF SAID