Spouts for caulking cartridges

Claim 1

A COMBINED SPOUT AND END CLOSURE FOR A DISPOSABLE TYPE OF CARTRIDGE FOR A DISPENSING GUN HAVING AN APERTURED CLOSURE PART ADAPTED TO BE SECURED TO THE OPEN END OF A CARTRIDGE BODY, A HOLLOW SPOUT PART OF RUBBERLIKE MATERIAL ASSEMBLED IN THE APERTURE OF THE CLOSURE PART AND MEANS FOR SECURING THE SPOUT PART IN THE APERTURE OF THE END CLOSURE PART COMPRISING A FLANGE AT THE INNER OPEN END OF SAID HOLLOW SPOUT PART, AN INTEGRAL RIB AROUND SAID SPOUT PART SPACED FROM SAID FLANGE, A FILLET FORMED IN SAID SPOUT PART BETWEEN SAID RIB AND SAID FLANGE, A FLANGE INTEGRAL WITH AND OFFSET FROM SAID CLOSURE PART TO FORM A SOCKET AROUND THE APERTURE IN SAID CLOSURE PART TO RECEIVE SAID FIRST FLANGE AND PROJECT BETWEEN SAID FIRST FLANGE AND SAID RIB AND AN ANGULAR LIP AT THE PERIPHERY OF THE APERTURE IN THE FLANGE ON SAID CLOSURE PART DIRECTED INTO SAID FILLET AND SO CONSTRUCTED AS TO DEFORM THE MATERIAL IN THE SPOUT PART ADJACENT SAID FILLET TO FORM A SEAL AFTER SAID SPOUT PART IS FORCED THROUGH THE APERTURE IN SAID CLOSURE PART TO SEAT THE FLANGE ON SAID SPOUT PART IN SAID SOCKET AND A SEALING STRIP SECURED OVER THE FLANGE ON SAID SPOUT PART AND OVER A PORTION OF THE ADJACENT INSIDE SURFACE OF SAID END CLOSURE TO PREVENT LEAKAGE THEREBETWEEN.