Bottle stopper arrangement

Claim 1

A BOTTLE STOPPER, ARRANGEMENT, COMPRISING, IN COMBINATION, A TUBULAR INSERT ADAPTED TO BE SECURED AT THE OUTER END THEREOF IN THE MOUTH OF A BOTTLE AND PROJECTING WITH THE INNER END THEREOF INTO THE BOTTLE TO BE CLOSED, SAID TUBULAR INSERT HAVING AN INNER FACE DEFINING A PASSAGE THE CROSS-SECTIONAL AREA OF WHICH DECREASES IN THE DIRECTION FROM SAID OUTER END TO SAID INNER END THEREOF, SAID INNER FACE HAVING IN THE REGION OF SAID OUTER END OF SAID INSERT A SCREW-THREADED ANNULAR SURFACE PORTION OF PREDETERMINED WIDTH; AND A BOTTLE STOPPER ADAPTED TO BE INSERTED INTO SAID TUBULAR INSERT THROUGH SAID OUTER END THEREOF, SAID STOPPER HAVING A SCREW-THREADED ANNULAR SURFACE PORTION LOCATED IN THE REGION OF THE OUTER END THEREOF AND ADAPTED TO ENGAGE SAID SCREW-THREADED ANNULAR SURFACE PORTION OF THE INNER FACE OF SAID TUBULAR INSERT, THE LENGTH OF SAID STOPPER FROM SAID SCREW-THREADED SURFACE PORTION TO THE INNER END THEREOF BEING GREATER THAN THE LENGTH OF SAID PASSAGE IN SAID INSERT FROM SAID SCREW-THREADED SURFACE PORTION TO SAID INNER END THEREOF BY A DISTANCE AT LEAST EQUAL TO SAID PREDETERMINED WIDTH AND A PORTION OF SAID STOPPER, EXTENDING FROM SAID INNER END OF SAID STOPPER AT LEAST SAID DISTANCE, HAVING A CROSS SECTIONAL AREA GREATER THAN THE CROSS SECTIONAL AREA OF THE INNER FACE OF SAID PASSAGE IN SAID TUBULAR INSERT AT SAID INNER END THEREOF, WHEREBY WHEN SAID STOPPER IS UNSCREWED FROM SAID INSERT SAID INNER END OF SAID STOPPER WILL AFTER UNSCREWING STILL BE LOCATED WITHIN SAID INNER END OF SAID PASSAGE IN SAID INSERT, FORCING THE SAME RADIALLY OUTWARDLY.