Plastic captive seal closure

Claim 1

A CAPTIVE CLOSURE FOR A CONTAINER OF THE TYPE HAVING AN OUTWARDLY DIRECTED CLOSURE RETAINING RIB, SAID CLOSURE COMPRISING A LOWER MEMBER INCLUDING AN UPPER TRANSVERSE PORTION ADAPTED TO EXTEND ACROSS A CONTAINER MOUTH AND FORM A SEAL THEREWITH, AND A DEPENDING SKIRT TERMINATING IN AN INWARDLY DIRECTED FLANGE FOR INTERLOCKING BENEATH THE CONTAINER CLOSURE RETAINING RIB TO RETAIN SAID LOWER MEMBER ON THE CONTAINER; AND AN UPPER DISPENSING MEMBER, SAID UPPER MEMBER INCLUDING A LOWER PORTION OVERLYING SAID UPPER PORTION, A DEPENDING SKIRT TELESCOPED OVER SAID LOWER MEMBER SKIRT, AN INWARDLY DIRECTED FLANGE ON SAID UPPER MEMBER SKIRT UNDERLYING SAID LOWER MEMBER FLANGE IN COMPRESSIVE ENGAGEMENT THEREWITH AND TIGHTLY RETAINING SAID UPPER MEMBER ON SAID LOWER MEMBER FOR RELATIVE PORTION, AND A SPOUT PROJECTING UPWARDLY FROM SAID LOWER PORTION, SAID SPOUT HAVING A BORE OPENING THROUGH SAID LOWER PORTION; AN UPWARDLY PROJECTING SAID LOWER MEMBER UPPER PORTION, AN UPWARDLY PROJECTING LOCKING RING ON SAID LOWER MEMBER UPPER PORTION SURROUNDING SAID LOWER MEMBER BORE FOR SEATING IN THE LOWER END OF SAID SPOUT BORE, AND A RECESS IN THE UNDERSIDE OF SAID LOWER PORTION CIRCUMFERENTIALLY SPACED FROM SAID SPOUT BORE FOR RECEIVING SAID LOCKING RING TO RETAIN SAID UPPER MEMBER IN A LOWER MEMBER BORE SEALING POSITION.