Closure device

Claim 1

A CLOSURE FOR AN OPEN ENDED CONTAINER, (1) SAID CONTAINER HAVING AN END SURFACE AND AN INTERIOR WALL, DEFINING THE OPEN MOUTH OF SAID CONTAINER, SAID SURFACE HAVING AN EXTERIOR CONVEX SURFACE ADJACENT ONE END OF SAID WALL DEFINING A LOCKING HEAD; (2) A GROOVE IN SAID END SURFACE SPACED FROM SAID INTERIOR WALL; (3) A CROWN SEAL CAP HAVING A CAP TOP, A DEPENDING SKIRT AND A LOCKING FLANGE; (4) SAID CAP MOUNTED OVER THE SAID END WALL WITH THE LOCKING FLANGE IN LOCKING RELATION TO SAID LOCKING HEAD; (5) A POLYOLEFINIC PLASTIC GASKET, A PORTION OF SAID GASKET PRESSURE CLAMPED BETWEEN SAID CAP TOP AND SAID END SURFACE AND BETWEEN SAID DEPENDING FLANGE AND THE EXTERIOR CONVEX SURFACE OF THE SAID LOCKING HEAD, THE CLAMPED PORTION OF SAID GASKET EXTENDING IN CONTACT WITH AND ACROSS THE END SURFACE AND SAID CAP TOP AND BETWEEN THE EXTERIOR CONVEX SURFACE OF SAID LOCKING HEAD AND SAID DEPENDING FLANGE, THE SPACE BETWEEN THE EXTERIOR CONVEX SURFACE OF SAID LOCKING HEAD AND SAID DEPENDING FLANGE HAVING A WEDGE VOLUME, AND THE EDGE PORTION OF SAID CLAMPED PORTION OF SAID GASKET EXTENDING INTO SAID WEDGE VOLUME AND CLAMPED BETWEEN SAID DEPENDING FLANGE AND THE EXTERIOR SURFACE OF SAID LOCKING HEAD ACROSS THE ENTIRE SURFACE OF SAID GASKET IN SAID WEDGE VOLUME; (6) SAID GASKET HAVING A DEPENDING SOLID CIRCUMFERENTIAL BEAD INTEGRAL WITH SAID GASKET AND EXTRUDED INTO SAID GROOVE, (7) SAID GROOVE BEING POSITIONED EXTERIORLY OF THE CENTER LINE OF SAID LOCKING HEAD.