Union for connecting conduits

Claim 1

A UNION FOR CONNECTING AT LEAST THREE CONDUITS PROVIDING A FLUID FLOW RELATION BETWEEN AT LEAST TWO OF SAID CONDUITS, THE FIRST OF SAID CONDUITS COMMUNICATING WITH AT LEAST ONE SECOND CONDUIT AND DEFINING A FIRST PASSAGE THROUGH WHICH A FIRST FLUID IS ADAPTED TO FLOW, AND THE THIRD OF SAID CONDUITS SURROUNDING SAID SECOND CONDUIT IN SPACED RELATION THERETO AND DEFINING BETWEEN THE EXTERIOR PERIPHERY OF SAID SECOND CONDUIT AND THE INTERIOR PERIPHERY OF SAID THIRD CONDUIT A SECOND PASSAGE ADAPTED TO CONTAIN A SECOND FLUID TO BE KEPT SEPARATE FROM SAID FIRST FLUID, SAID UNION COMPRISING A TERMINAL MEMBER FIXED IN FLUID-TIGHT RELATION TO THE END PORTION OF SAID THIRD CONDUIT AND HAVING AN OUTER FACE AND AN INNER PERIPHERY, A FITTING MEMBER FIXED IN FLUID-TIGHT RELATION TO THE END PORTION OF SAID SECOND CONDUIT AND HAVING AN OUTER FACE AND AN OUTER PERIPHERY AND DISPOSED WITHIN SAID TERMINAL MEMBER, MEANS DISPOSED BETWEEN THE INNER PERIPHERY OF SAID TERMINAL MEMBER AND THE OUTER PERIPHERY OF SAID FITTING MEMBER TO LIMIT RELATIVE INWARD AXIAL MOVEMENT OF SAID FITTING MEMBER IN SAID TERMINAL MEMBER, A SECURING MEMBER FIXED IN FLUID-TIGHT RELATION TO THE END PORTION OF SAID FIRST CONDUIT AND HAVING AN OUTER FACE CONFRONTING THE OUTER FACES OF SAID FITTING AND TERMINAL MEMBERS, MEANS ACTING BETWEEN SAID SECURING MEMBER AND SAID TERMINAL MEMBER TO EXERT AN AXIAL FORCE THEREON TO DRAW SAID TERMINAL MEMBER AND SAID SECURING MEMBER TOWARD EACH OTHER AND TO FORCE SAID FITTING MEMBER TO THE INWARD LIMIT OF ITS AXIAL TRAVEL, A FIRST SEALING SURFACE ON THE OUTER PERIPHERY OF SAID FITTING MEMBER ADJACENT ITS OUTER FACE, A SECOND SEALING SURFACE ON THE INNER PERIPHERY OF SAID TERMINAL MEMBER ADJACENT ITS OUTER FACE, A THIRD SEALING SURFACE ON SAID CONFRONTING OUTER FACE OF SAID SECURING MEMBER IN OPPOSITION TO SAID FIRST AND SECOND SEALING SURFACES, AND SEALING MEANS DISPOSED IN CONTACT WITH ALL OF SAID SEALING SURFACES TO THEREBY PREVENT FLUID IN SAID FIRST PASSAGE FROM ESCAPING BETWEEN SAID FITTING MEMBER AND SAID SECURING MEMBER AND FLUID IN SAID SECOND PASSAGE FROM ESCAPING BETWEEN SAID FITTING MEMBER AND SAID TERMINAL MEMBER WHEN SAID FORCE-EXERTING MEANS IS ACTIVATED.