Secondary closure

Claim 1

IN A RECLOSURE CAN CONSTRUCTION, A BODY, AN END SEAMED TO SAID BODY, SAID CAN END HAVING MEANS BELOW THE TOP OF THE SEAM FOR DEFINING AN AREA OF CUT FOR A CAN OPENER, A COLLAR HAVING AN ANNULAR WALL THE OUTER SURFACE OF WHICH FITS SNUGLY IN THE BODY AT THE UPPER END THEREOF, THE UPPERMOST PART OF SAID ANNULAR WALL OF THE COLLAR BEARING AGAINST THE CAN END AT THE SEAM, SAID ANNULAR WALL OF THE COLLAR TERMINATING BELOW THE TOP OF THE SEAM AND ABOVE THE DEFINING AREA OF CUT OF THE CAN END, SAID COLLAR HAVING AN ENLARGED OPENING FOR ACCESS TO THE INTERIOR OF SAID CAN, A RESILIENT CAP FOR SAID OPENING, THE CAP BEING SUPPORTED AT ITS PERIPHERY BY THE COLLAR, AND COOPERATING MEANS ON SAID COLLAR AND CAP FOR DETACHABLY RETAINING SAID CAP ON SAID COLLAR; SAID CAP BEING FORMED WITH A LIFT KNOB AND SAID CAP IMMEDIATELY SURROUNDING SAID KNOB BEING FORMED WITH AN ANNULAR SECTION YIELDABLE SO THAT SAID KNOB IS DOWNWARDLY COMPRESSIBLE, AND WHEN SAID END IS IN PLACE SAID END DISPLACING SAID KNOB BELOW ITS NORMAL LEVEL WITH RESPECT TO THE PART OF THE CAP THAT IS SUPPORTED BY SAID COLLAR SO THAT WHEN SAID END IS SEVERED SAID KNOB RISES ABOVE THE LEVEL AT WHICH IT WAS HELD BY SAID END, FOR CONVENIENT ACCESS TO SAID KNOB TO FACILITATE MANUAL REMOVAL OF SAID CAP FROM SAID COLLAR, SAID CAP BEING FORMED BETWEEN SAID MEANS AND SAID ANNULAR YIELDABLE SECTION IN ANGULARLY RELATAED ANNULAR STRETCHES AND SAID CAP IS FLEXIBLE AT THE JUNCTURE OF SAID STRETCHES WHEREBY SAID CAP MAY FLEX DOWNWARDLY AT SAID JUNCTURE TO AUGMENT THE COMPRESSIBILITY OF SAID KNOB.