Reinforced container closure

Claim 1

IN COMBINATION, A CONTAINER HAVING AN OPEN MOUTH A RIM BEAD ON SAID CONTAINER AROUND THE MOUTH THEREOF, SAID CONTAINER HAVING AN INWARDLY OPEN SEATING GROOVE IN THE WALL THEREOF BELOW SAID RIM BEAD, AND A COVERALL TYPE OF CLOSURE FOR SAID CONTAINER, SAID CLOSURE BEING ATTACHABLE BY HAND AS A UNIT AND COMPRISING A COVER OF THIN SHEET MATERIAL INCLUDING A DIAPHRAGM, AN UPSTANDING WALL AROUND SAID DIAPHRAGM, A FORMATION IN THE FORM OF AN INVERTED CHANNEL AT THE TOP OF SAID WALL TO RECEIVE SAID RIM BEAD, SAID FORMATION BEING WIDER THAN SAID RIM BEAD WHEREBY THE OUTER DEPENDING PORTION OF SAID FORMATION IS RADIALLY SPACED FROM THE CONTAINER RIM BEAD WHEN THE CLOSURE IS ON THE CONTAINER, AN INWARDLY HOLLOW ANNULAR SEATING BEAD ADJACENT THE JUNCTION OF THE WALL AND THE DIAPHRAGM TO FIT IN SAID SEATING GROOVE, AND A FRANGIBLE REINFORCING RING MORE RIGID THAN SAID COVER ENGAGED IN SAID SEATING BEAD TO HOLD THE BEAD TIGHTLY IN SAID SEATING GROOVE AND PREVENT REMOVAL OF THE CLOSURE EXCEPT BY FIRST BREAKING SAID RING.