Brone

Claim 1

A STOPPER FOR A BOTTLE HAVING AN OPENING IN ITS NECK AND A BEAD SURROUNDING THE OPENING, COMPRISING MEANS FOR SEALING THE OPENING, A WALL SURROUNDING SAID SEALING MEANS AND HAVING AN INWARDLY PROJECTING BULGE ADAPTED TO COOPERATE WITH SAID BEAD WHEN SAID SEALING MEANS IS IN BOTTLE-SEALING CONDITION, A CYLINDRICAL JACKET PROJECTING ABOVE SAID WALL, AN OUTWARDLY PROJECTING DEFORMABLE STOP ELEMENT FORMED ON SAID JACKET AND SPACED ABOVE SAID WALL, A RING SURROUNDING SAID WALL AND JACKET AND HAVING AN UPPER POSITION AND A LOWER POSITION, SAID RING SERVING TO LOCK SAID BULGE BENEATH SAID BEAD WHEN IN ITS LOWER POSITION TO PREVENT REMOVAL OF SAID SEALING MEANS FROM THE BOTTLE AND TO RELEASE SAID BULGE WHEN IN ITS UPPER POSITION, AND A DETENT FORMED ON SAID RING ADAPTED TO REST UPON SAID STOP ELEMENT WHEN SAID RING IS IN ITS UPPER POSITION AND CAPABLE OF BEING FORCED PAST SAID STOP ELEMENT TO PERMIT SAID RING TO REACH ITS LOWER POSITION, WHEREBY WHEN SAID RING IS IN ITS UPPER POSITION A CONTINUOUS DOWNWARD FORCE ON IT IS INITIALLY TRANSMITTED TO SAID WALL VIA SAID DETENT AND STOP ELEMENT TO MOVE SAID BULGE PAST SAID BEAD ON THE BOTTLE AND THEREAFTER SERVES TO MOVE SAID RING TO ITS LOWER POSITION BY FORCING SAID DETENT PAST SAID STOP ELEMENT.