Spout type container closure

Claim 1

IN A SPOUT TYPE CONTAINER CLOSURE, A GENERALLY TUBULAR POURING SPOUT FORMED WITH A BORE OF CIRCULAR CROSSSECTION THERETHROUGH TERMINATING IN A MOUTH AT THE OUTER END OF THE SPOUT, A FLEXIBLE SEALING DIAPHRAGM SPACED INWARDLY OF THE BORE FROM SAID MOUTH AND EXTENDING THEREACROSS, SAID DIAPHRAGM COMPRISING A CENTRAL BODY OF RELATIVELY STRONG FLEXIBLE SHEET MATERIAL ENCIRCLED BY A WEAKENED ZONE OF MATERIAL DEFINING A TEAR LINE, A RIGID LEVER FIXEDLY SECURED TO SAID CENTRAL BODY FOR FULCRUMING ABOUT A FOLD LINE PROVIDED BY AND EXTENDING CHORDALLY OF THE CENTRAL BODY, SAID LEVER BEING SPACED RADIALLY INWARDLY OF THE WALL OF SAID BORE AND PROJECTING OUTWARDLY FROM THE DIAPHRAGM TOWARD SAID MOUTH, SAID LEVER INCLUDING A RADIALLY OUTWARDLY PROJECTING ARM RIGID THEREWITH AND HAVING ITS RADIALLY OUTER END SECURED TO SAID CENTRAL BODY CONTIGUOUS TO SAID TEAR LINE AT A LOCATION RADIALLY SPACED FROM SAID FOLD LINE, SAID OUTER END BEING OF SUFFICIENTLY SMALL CIRCUMFERENTIAL DIMENSION AT THE TEAR LINE TO EXERT A LOCALIZED TEARING ACTION ON SAID TEAR LINE TO INITIATE TEARING AWAY OF THE DIAPHRAGM, AND A PULL TAB RESILIENTLY FOLDABLY CONNECTED TO THE FREE END OF SAID LEVER, AND NORMALLY PROJECTING OUTWARDLY THROUGH SAID MOUTH, SAID PULL TAB BEING FOLDABLE INTO SAID MOUTH FOR RETENTION THEREIN BY A CLOSURE CAP, AND ITS RESILIENTLY SERVING TO AUTOMATICALLY PROJECT IT THROUGH SAID MOUTH UPON REMOVAL OF THE CAP.