Valve closure for bottles and the like

Claim 1

A CLOSURE MEANS FOR CONTAINERS COMPRISING, A VALVE CASING MOLDED OF RESILIENT SYNTHETIC RESIN WITH A THROUGH PASSAGE WITH AN INNER END ADAPTED FOR COMMUNICATION WITH A CONTAINER AND AN OUTER END, SAID VALVE CASING HAVING A WALL DEFINING A SECTION OF SAID PASSAGE OF REDUCED TRANSVERSE AREA ADJACENT SAID INNER END THEREOF, A ONEPIECE VALVE MEMBER HAVING A SHANK EXTENDING INTO SAID OUTER END OF SAID PASSAGE AND THROUGH SAID PASSAGE WITH SAID VALVE MEMBER BEING MOVABLE AS A WHOLE, A RADIALLY OUTWARDLY EXTENDING STOP MEANS ON THE SHANK BELOW THE UPPER OUTER END OF THE VALVE CASING AND ENGAGEABLE WITH SAID VALVE CASING IN ONE POSITION OF THE VALVE MEMBER FOR LIMITING MOVEMENT OF THE VALVE MEMBER FROM THE VALVE CASING, SAID VALVE MEMBER SHANK HAVING A PORT LOCATED BELOW THE STOP MEANS THEREON COMMUNICATING WITH THE VALVE CASING PASSAGE OUTWARDLY OF THE SECTION OF REDUCED TRANSVERSE AREA, SAID SHANK HAVING A CLOSED END BELOW THE PORT AND A BORE WITH WHICH SAID PORT COMMUNICATES EXTENDING FROM SAID CLOSED END OUTWARDLY THROUGH THE SHANK AND OPENING EXTERIORLY OF THE VALVE CASING, SAID PORT IN THE VALVE MEMBER BEING BETWEEN THE RADIALLY OUTWARDLY EXTENDING STOP MEANS ON THE VALVE MEMBER AND THE INNER END OF THE VALVE CASING, SAID VALVE CASING PASSAGE AND VALVE MEMBER HAVING COOPERATING PORTIONS WHICH WITH SAID PORT AND BORE FORM A DISPENSING CHANNEL EXTENDING FROM SAID CONTAINER TO THE EXTERIOR OF THE VALVE CASING WHEN THE VALVE MEMBER IS IN OPEN POSITION, AND A PORTION ON SAID SHANK IN THE REDUCED PORTION OF THE PASSAGE AND BEING OF A SIZE AND SHAPE FOR RESILIENT SEALING ENGAGEMENT WITH SAID WALL AND CLOSING SAID CHANNEL WHEN THE VALVE MEMBER IS IN CLOSED POSITION.