Tube fitting

Claim 1

A TUBE FITTING COMPRISING: A BODY MEMBER HAVING A SEAT SURFACE; AN ANNULAR SLEEVE ARRANGED FOR COAXIALLY RECEIVING THE END OF A TUBE HAVING AN OUTER WALL PORTION, SAID SLEEVE HAVING AN INNER END ADAPTED TO SEALINGLY ENGAGE SAID SEATING SURFACE, A CONSTRICTIBLE OUTER END, AND SEALING MEANS AT SAID OUTER END OF THE SLEEVE FOR SEALING SAID SLEEVE TO THE TUBE END AS AN INCIDENT OF CONSTRICTION OF SAID OUTER END; A FIRST FORCE MEMBER MOUNTED ON SAID BODY FOR AXIAL MOVEMENT RELATIVE THERETO AND HAVING A CAM PORTION FOR CONSTRICTING SAID SLEEVE OUTER END AS AN INCIDENT OF MOVEMENT OF SAID CAM PORTION TOWARD SAID BODY; COOPERATING MEANS ON SAID FORCE MEMBER AND SAID BODY FOR FORCIBLY URGING SAID FORCE MEMBER TOWARD SAID BODY; A CONSTRICTIBLE ELEMENT SECURED TO SAID FORCE MEMBER AT A REGION AXIALLY REMOVED FROM SAID CAM PORTION, SAID ELEMENT HAVING THEREON RADIALLY INWARDLY EXTENDING MEANS ARRANGED FOR PENETRATION INTO THE OUTER WALL PORTION OF THE TUBE END AS AN INCIDENT OF CONSTRICTION OF SAID ELEMENT AND THEREBY POSITIVELY PRECLUDING MOVEMENT OF THE TUBE LONGITUDINALLY OUTWARDLY RELATIVE TO SAID NUT MEMBER, SAID INWARDLY EXTENDING MEANS COMPRISING A CYLINDRICAL INNER SURFACE IN SAID ELEMENT AND AT LEAST ONE PROJECTION EXTENDING RADIALLY INWARDLY FROM SAID SURFACE AND HAVING A PRESELECTED RADIAL EXTENT WHEREBY SAID PROJECTION MAY PENETRATE INTO THE TUBE; AND A SECOND FORCE MEMBER MOUNTED ON THE ASSEMBLY OF SAID BODY AND SAID FIRST FORCE MEMBER FOR AXIAL MOVEMENT RELATIVE TO SAID CONSTRICTIBLE ELEMENT AND HAVING MEANS THEREON COOPERATING WITH SAID CONTRICTIBLE ELEMENT TO FORCE SAID AT LEAST ONE PROJECTION INTO THE TUBE THEREBY TO LOCK THE TUBE AGAINST AXIAL MOVEMENT RELATIVE TO THE FITTING.