Container including a neck with a pouring opening and closing device for the same

Claim 1

THE COMBINATION OF A CONTAINER HAVING A NECK WITH A POURING OPENING AND AN ANNULAR BEAD DIRECTED OUTWARDLY FROM SAID NECK AROUND SAID OPENING; AND A CLOSING DEVICE FOR SAID CONTAINER COMPRISING A BUSHING OF ELASTICALLY EXTENSIBLE MATERIAL INCLUDING AN INNER WALL LYING WITHIN SAID POURING OPENING OF THE CONTAINER NECK, AN ANNULAR TOP WALL EXTENDING OUTWARDLY FROM THE TOP OF SAID INNER WALL, AN OUTER WALL JOINED TO THE OUTER PERIPHERY OF SAID ANNULAR TOP WALL AND HAVING AN UPPER PART WITH AN INWARDLY OPENING ANNULAR RECESS TIGHTLY RECEIVING SAID BEAD OF THE CONTAINER NECK AND A LOWER PART FLARING OUTWARDLY AWAY FROM SAID CONTAINER NECK, THE LOWER EDGE PORTION OF SAID LOWER PART OF THE OUTER WALL BEING REVERTED OUTWARDLY AND UPWARDLY TO DEFINE AN UPWARDLY OPENING GROOVE, THE FREE EDGE OF SAID OUTER WALL BEING ENLARGED INWARDLY TO RESTRICT THE OPENING OF SAID GROOVE; AND A CLOSING CAP PUSHED ONTO SAID BUSHING AND INCLUDING A CIRCULAR TOP WALL, AND AN OUTER WALL DEPENDING FROM THE PERIPHERY OF SAID CIRCULAR TOP WALL AND TIGHTLY ENGAGING AT LEAST SAID UPPER PART OF THE OUTER WALL OF THE BUSHING, SAID OUTER WALL OF THE CLOSING CAP HAVING AN ANNULAR, OUTWARDLY DIRECTED BEAD ALONG ITS LOWER EDGE WHICH IS FIRMLY HELD IN SAID GROOVE BY SAID INWARDLY ENLARGED FREE EDGE OF THE OUTER WALL OF SAID BUSHING; THE UPPER AND LOWER SURFACES OF SAID TOP WALLS OF THE BUSHING AND CLOSING CAP, RESPECTIVELY, HAVING COOPERATING PROJECTIONS AND RECESSES ENGAGED WITH EACH OTHER AND FORMED WITH RADIALLY EXTENDING FLANKS WHICH ARE INCLINED IN THE CIRCUMFERENTIAL DIRECTION RELATIVE TO THE AXIS OF THE CONTAINER NECK SO THAT TURNING OF SAID CAP RELATIVE TO SAID BUSHING FORCIBLY MOVES THE CAP UPWARDLY WITH RESPECT TO THE BUSHING FOR REMOVING SAID BEAD OF THE CAP FROM SAID GROOVE OF THE BUSHING.