Two-piece stopper

Claim 1

A TWO-PIECE STOPPER ADAPTED SELECTIVELY TO SEAL A CONTAINER APERTURE OF GENERALLY SIMILAR SIZE AND SHAPE, COMPRISING IN COMBINATION: A HOLLOW OUTER MEMBER HAVING AN EXTERNALLY PROJECTING PERIPHERAL SHOULDER AND FORMED WITH CLOSED BOTTOM AND LATERALLY DEFORMABLE SIDE WALLS EXTERNALLY TAPERED DIVERINGLY-OUTWARD SO AS TO BE EASILY INSERTABLE PARTWAY INTO A SIMILAR-SHAPED APERTURE TO A FIRST POSITION AT WHICH THE MEMBER IS LOOSELY SUPPORTED IN THE APERTURE, AND A SECOND POSITION WHERE SAID SHOULDER ABUTINGLY OVERLIES SAID APERTURE AND AT WHICH THE HOLLOW OUTER MEMBER MAY BE SUBSEQUENTLY LOCATED BY FORCIBLE INTHRUST, WHEREBY A SURROUNDING BAND OF THE DEFORMABLE SIDEWALL THUS FORCED WITHIN THE APERTURE BY SAID INTHRUST IS TRANSVERSELY PRESS-FIT TO FORM A PERIPHERAL SEALING BEAD IMMEDIATELY BENEATH THE APERTURE, A SECOND MEMBER HAVING A RIGID, CORRESPONDINGLY TAPERED, BODY RECIPROCABLY HOUSED WITHIN SAID HOLLOW FIRST MEMBER WITH EXTERNALLY OPERABLE HANDLE MEANS, SAID BODY BEING OF A SIZE (WHEN THUS HOUSED) WHICH IS ADAPTED TO BE RETAINED LOOSELY WITHIN THE OUTER PORTION OF THE HOLLOW MEMBER AND FROM THERE TO PASS THROUGH SAID APERTURE WHEN SAID FIRST MEMBER IS LOCATED AT THE FIRST POSITION, AND UPON INTHRUST OF SAID BODY TO POSITION THE HOLLOW MEMBER AT SAID SECOND POSITION AND THEREBY TO LATERALLY DEFORM SAID BAND OF SIDEWALL TO FORM BY PRESS-FIT SAID PERIPHERAL BEAD IMMEDIATELY BENEATH THE APERTURE, WHICH BODY IS FORMED WITH AN INSET PERIPHERAL LEDGE ADJACENT ITS OUTER END WHICH UPON SAID INTHRUST IS LOCATED BENEATH SAID APERTURE AND FRICTIONALLY OVERLAID BY THE PERIPHERAL BEAD HELD JOINTLY BY AND BETWEEN THE UNDERSIDE OF THE APERTURE AND SAID BODY LEDGE, WHICH SEALING REGISTRATION MAY SUBSEQUENTLY BE RUPTURED AND THE STOPPER REMOVED FROM THE APERTURE BY WAY OF THE HANDLE MEANS CANTING SAID BODY WITHIN THE HOLLOW OUTER MEMBER SO AS TO UNSEAT AND UNFOLD THE BEAD OUTWARD FROM THE LEDGE AND APERTURE.