Concentric self-sealing coupling

Claim 1

IN A CONCENTRIC COUPLING HAVING FIRST AND SECOND CONNECTOR MEMBERS EACH OF WHICH INCLUDE A CENTRAL FLUID PASSAGE AND A CONCENTRIC FLUID PASSAGE, A FIRST MALE CONNECTOR MEMBER COMPRISING A FIXED OUTER RING ON WHICH IS FORMED A FIRST CONCIAL VALVE SEAT, A FIXED CENTER POST ON WHICH IS FORMED A SECOND CONICAL VALVE SEAT, AN ANNULAR POPPET VALVE, THE OUTER PERIPHERY OF WHICH IS CONICAL AND SEATABLE ON SAID FIRST VALVE SEAT FOR CLOSING OFF THE CONCENTRIC FLUID PASSAGE AND THE INNER PERIPHERY OF WHICH IS CONICAL AND SEATABLE ON SAID SECOND VALVE SEAT FOR CLOSING OFF THE CENTRAL FLUID PASSAGE, AND MEANS FOR URGING SAID ANNULAR POPPET VALVE TOWARDS SAID FIRST AND SECOND VALVE SEATS, A SECOND FEMALE CONNECTOR MEMBER COMPRISING A FIXED OUTER BODY FOR RECEIVING THE MALE CONNECTOR MEMBER, A FIXED ANNULAR FLUID DIVIDER HAVING A THIRD CONICAL VALVE SEAT FORMED ON THE OUTER PERIPHERY THEREOF AND A FOURTH CONICAL VALVE SEAT FORMED ON THE INNER PERIPHERY THEREOF, A SECOND ANNULAR POPPET VALVE HAVING A CONICAL SURFACE WHICH IS SEATABLE ON SAID THIRD VALVE SEAT FOR CLOSING OFF THE CONCENTRIC FLUID PASSAGE, MEANS FOR URGING SAID SECOND ANNULAR POPPET VALVE TOWARDS SAID THIRD VALVE SEAT, A THIRD POPPET VALVE HAVING A CONICAL SURFACE WHICH IS SEATABLE ON SAID FOURTH VALVE SEAT FOR CLOSING OFF THE CENTRAL FLUID PASSAGE, MEANS FOR URGING SAID THIRD POPPET VALVE TOWARDS SAID FOURTH VALVE SEAT, SAID FIRST, SECOND AND THIRD POPPET VALVES BEING SIMULTANEOUSLY MOVED TO AN OPEN POSITION BY THE FLUID DIVIDER, OUTER RING AND CENTER POST RESPECTIVELY WHEN THE CONNECTOR MEMBERS ARE BROUGHT INTO OPERATIVE RELATION, AND MEANS FOR LOCKING THE CONNECTOR MEMBERS IN SAID OPERATIVE RELATION.