Hinged spout and closure

Claim 1

A CLOSURE COMPRISING A PLATE OF FLEXIBLE PLASTIC MATERIAL HAVING AN APERTURE THEREIN, SAID APERTURE HAVING TWO SIDES, AN END JOINING SAID SIDES AND AN AREA OPPOSITE SAID END, AND A SPOUT FOR OPENABLY CLOSING SAID APERTURE, SAID SPOUT COMPRISING A PAIR OF SIDES AND A COVER PLATE INTEGRALLY JOINED TO SAID TWO SIDES ALONG LINES OF DIMINISHED THICKNESS, SAID SPOUT BEING BENT ALONG SAID LINES OF DIMINISHED THICKNESS INTO A U-SHAPE WITH THE COVER PLATE FORMING THE BIGHT OF THE U, SAID COVER PLATE BEING SHAPED SUBSTANTIALLY THE SAME AS SAID APERTURE AND BEING INTEGRALLY JOINED TO SAID FIRST MENTIONED PLATE IN SAID AREA OPPOSITE SAID END OF SAID APERTURE BY A ZONE OF DIMINISHED THICKNESS, WHEREBY TO PIVOTALLY MOUNT SAID SPOUT FOR MOVEMENT FROM AND TO A COLSED POSITION IN WHICH SAID COVER PLATE IS SUBSTANTIALLY COPLANAR WITH SAID FIRST MEMTIONED PLATE AND TO AND FROM AN OPEN POSITION IN WHICH SAID COVER PLATE IS SUBSTANTIALLY PERPENDICULAR TO SAID FIRST MENTIONED PLATE, EACH OF SAID SPOUT SIDES BEING SUBSTANTIALLY QUADRANT SHAPED WITH THE CENTER OF SAID QUADRANT BEING SUBSTANTIALLY AT SAID AREA OPPOSITE SAID END OF SAID APERTURE AND THE RADIUS OF SAID QUADRANT BEING EQUAL SUBSTANTIALLY TO THE LENGTH OF SAID APERTURE BETWEEN THE END THEREOF AND THE AREA OPPOSITE SAID END, EACH SIDE OF SAID SPOUT HAVING ONE EDGE DEFINED BY THE LINE OF DIMINISHED THICKNESS JOINING SAID SIDE OF SAID SPOUT TO SAID COVER PLATE, A SECOND EDGE PERPENDICULAR THERETO AND EXTENDING AWAY FROM SAID COVER PLATE, AND AN ARCUATE EDGE EXTENDING BETWEEN SAID TWO PERPENDICULAR EDGE EACH OF SAID SIDES HAVING A RADIALLY EXTENDING STOP ADJACENT SAID SECOND RADIAL EDGE THEREOF FOR ENGAGING SAID FIRST MENTIONED PLATE FOR LIMITING THE MOVEMENT OF SAID SPOUT BEYOND ITS OPEN POSITION, A TAB INTEGRALLY FORMED WITH SAID COVER PLATE AND EXTENDING OUTWARDLY THEREFROM AWAY FROM THE ZONE OF JOINING BETWEEN SAID COVER PLATE AND SAID FIRST MENTIONED PLATE FOR OVERLYING SAID FIRST MENTIONED PLATE WHEN SAID SPOUT IS IN SAID CLOSED POSITION, A BEAD ON SAID COVER PLATE EXTENDING BETWEEN SAID SPOUT SIDES AND ALONG THE JUNCTION WITH SAID TAB FOR ENGAGING THE END OF SAID APERTURE WHEN SAID SPOUT IS IN CLOSED POSTION, AND A PAIR OF BEADS ON SAID SIDES EXTENDING ALONG THE RADIAL EDGES THEREOF JOINED TO SAID COVER PLATE.