Tube closure device

Claim 1

A CONTAINER TUBE CLOSURE DEVICE OF THE TYPE INCLUDING AN EXTERNALLY THREADED TUBULAR MEMBER, THE LOWER PORTION OF WHICH IS ADAPTED TO BE FASTENED TO THE OUTLET OF THE TUBE CONTAINER AND AN INTERNALLY-THREADED CAP COOPERATING WITH SAID TUBULAR MEMBER AND WHICH IS ADAPTED TO BE SCREWED OPEN FOR DISCHARGE OF THE CONTENTS OF THE TUBE CONTAINER WITHOUT THE CAP BEING COMPLETELY REMOVED, SAID CAP HAVING AN INTERNAL CAVITY ABOVE ITS THREADS TERMINATING IN A CENTRAL APERTURE AT THE TOP, SAID TUBULAR MEMBER HAVING A PLUG AT ITS UPPER END ADAPTED TO FIT IN A CLOSE SAID APERTURE WHEN THE CAP IS SCREWED DOWN ON THE TUBULAR MEMBER, THE UPPER PORTION OF SIAD TUBULAR MEMBER ALSO INCLUDING APERTURES OPENING OUT BELOW THE PLUG INTO THE INTERNAL CAVITY IN THE CAP, SAID TUBULAR MEMBER BEING PROVIDED WITH A LONGITUDINALLY-EXTENDING CYLINDRICAL OUTER SURFACE BETWEEN ITS EXTERNAL THREADS AND THE APERTURES IN ITS UPPER PORTION, AND INTEGRAL RING ON SAID TUBULAR MEMBER BELOW SAID APERTURES AT THE UPPER PORTION OF SAID CYLINDRICAL SURFACE PROJECTING OUTWARDLY INTO THE INTERNAL CAVITY IN THE CAP AND HAVING A LATERALLY-EXTENDING UNDERSURFACE EXTENDING AT RIGHT ANGLES TO SAID CYLINDRICAL SURFACE, AN INTEGRAL INWARDLY-PROJECTING RING IN SAID CAP ABOVE ITS THREADS HAVING AN UPPER SURFACE PARALLEL TO THE UNDERSURFACE OF THE OUTWARDLY-PROJECTING RING ON THE TUBULAR MEMBER, SAID INWARDLY-PROJECTING RING IN THE CAP HAVING AN INNER EDGE ENGAGING AND SEALNG AGAINST THE CYLINDRICAL SURFACE OF THE TUBULAR MEMBER TO PREVENT THE CONTENTS OF THE CONTAINER TUBE FROM ENTERING THE THREADS OF THE CAP OR THOSE OF THE TUBULAR MEMBER AND BEING MOVABLE ALONG SAID CYLINDRICAL SURFACE WHEN THE CAP IS SCREWED UP OR DOWN ON THE TUBULAR MEMBER, THE UPPER AND UNDER SURFACES OF SAID INWARDLY AND SAID OUTWARDLY-PROJECTING RINGS BEING ADAPTED TO SNAP OVER EACH OTHER UPON SCREWING THE CAP ON THE TUBULAR MEMBER AND TO PROVIDE A STOP PREVENTING REMOVAL OF THE CAP WHEN SCRWED OPEN FOR DISCHARGE OF THE CONTENTS OF THE TUBE CONTAINER, THE MAXIMUM DIAMETER OF SAID OUTWARDLY-PROJECTING RING BEING SUBSTANTIALLY SMALLER THAN THE DIAMETER OF THE PORTION OF THE INTERNAL CAVITY OF THE CAP INTO WHICH IT PROJECTS, THE ARRANGEMENT OF THE INWARDLY-PROJECTING RING BEING SUCH THE THE VOLUME OF SAID INTERNAL CAVITY THEREABOVE IN THE CAP IS NOT SUBSTANTIALLY REDUCED DURING THE CLOSING OF THE CAP WHEN IT IS SCREWED DOWN.