Nozzle perforating cap for collapsible tubes

Claim 1

THE COMBINATION WITH A COLLAPSIBLE TUBE HAVING A COLLAPSIBLE BODY, AND A DISCHARGE NOZZLE CONSTITUTED OF A RELATIVELY RIGID, THREADED CYLINDRICAL PORTION AND A TAPERED NON-THREADED END PORTION EXTENDING AXIALLY FROM THE CYLINDRICAL PORTION THEREOF AND SEALED AT ITS TIP, OF A REMOVABLE HOLLOW CAP ENCOMPASSING THE SAID NOZZLE AND PROVIDED WITH A NOZZLE TIP PIERCING MEMBER PROJECTING INWARDLY THEREOF, THE UPPER PORTION OF THE INTERIOR WALL OF THE CAP BEING OF CONICAL NON-THREADED FROM AND HAVING SUBSTANTIALLY THE SAME VERTEX ANGLE AS THE NOZZLE END PORTION SO THAT THE LATTER IS CAPABLE OF FITTING SNUGLY AGAINST THE UPPER PORTION OF THE SAID INTERIOR WALL OF THE CAP OVER SUBSTANTIALLY ITS WHOLE AREA, THE LOWER PORTION OF THE INNER WALL OF THE CAP BEING CYLINDRICAL AND THREADED TO FIT THE THREADED PORTION OF THE NOZZLE, THE CAP BEING NORMALLY THREADED ON THE NOZZLE WITH THE PIERCING MEMBER IN CLOSE PROXIMITY TO THE TIP OF THE NOZZLE AND WITH THE TAPERED WALLS OF THE NOZZLE AND CAP IN SPACED RELATION TO EACH OTHER, THE CAP IN SUCH RELATIONSHIP BEING CAPABLE OF FURTHER AXIAL MOVEMENT ON THE NOZZLE FOR A DISTANCE SUCH THAT THE TAPERED NOZZLE END PORTION AND THE UPPER INTERIOR WALL PORTION OF THE CAP ARE BROUGHT INTO CONTACT, WHEREBY ON FURTHER THREADING THE CAP ONTO THE NOZZLE THE PIERCING MEMBER IS CAUSED TO PERFORATE THE NOZZLE TIP, AND THE CONICAL WALLS OF THE NOZZLE AND CAP ARE CAUSED TO ENGAGE EACH OTHER IN SEALING RELATION AND COACT TO LIMIT THE PERFORATING MOVEMENT OF THE PIERCING MEMBER, THE PARTS BEING SO DIMENSIONED THAT IN THE LOWERMOST, CLOSED CONDITION OF THE CAP, WHEREIN THE NOZZLE HAS BEEN PERFORATED, THE TOP INNER WALL OF THE CAP IS IN CONTACT WITH THE TIP OF THE NOZZLE, SAID COMBINATION INCLUDING A PLASTIC COATING ONLY ON THE LOWER THREADS OF THE NOZZLE ACTING TO LIMIT THE MOVEMENT OF THE CAP ALONG THE NOZZLE TO PREVENT PREMATURE PUNCTURING OF THE NOZZLE BUT CAPABLE OF BEING PENETRATED BY THE THREADS OF THE CAP ON FORCIBLE TURNING OF THE LATTER.