Pipe tool joints

Claim 1

IN A TOOL JOINT: A BOX MEMBER HAVING AN INNER CIRCUMFERENTIAL TAPERED SEALING SURFASCE; A PIN MEMBER RECEIVABLE IN SAID BOX MEMBER AND HAVING ADJACENT ITS END A DEFLECTABLE CIRCUMFERENTIAL PORTION ENGAGEABLE WITH SAID TAPERED SEALING SURFACE TO BE FORCED LATERALLY INWARDLY THEREBY AND PROVIDE A CIRCUMFERENTIAL SEAL BETWEEN A TAPERED EXTERNAL PERIPHERY OF SAID CIRCUMFERENTIAL PORTION AND SAID SEALING SURFACE; SAID BOX MEMBER HAVING INTERNAL THREADS AT ITS OUTER END; SAID PIN MEMBER HAVING A PERIPHERAL GROOVE; A LATERALLY EXPANDABLE AND CONTRACTABLE LOCK RING ROTATABLE IN SAID GROOVE BUT RETAINED AGAINST AXIAL MOVEMENT BY THE SIDES OF SAID GROOVE AND HAVING AN EXTERNAL THREAD MESHABLE WITH SAID INTERNAL THREAD, THE DEPTH OF SAID GROOVE AND THE RADIAL THICKNESS OF SAID RING BEING SUCH THAT ENGAGEMENT OF SAID RING WILL CONTRACT LATERALLY IN SAID GROOVE TO NONMESHING RELATION TO SAID INTERNAL THREAD TO THEREBY ENABLE LONGITUDIANL AND NON-ROTARY INSERTION OF SAID PIN MEMBER IN SAID BOX MEMBER, AFTER WHICH SAID RING EXPANDS IN SAID GRROVE TO MESH ITS THREADS WITH SAID INTERNAL THREAD TO SECURE SAID MEMBERS TO ONE ANOTHER TO MAINTAIN SAID CIRCUMFERENTIAL SEAL; SAID RING HAVING MEANS THEREON FOR ENABLING SAID RING TO BE ROTATED ON SAID PIN MEMBER WITH ITS THREAD IN MESH WITH SAID INTERNAL THREAD WHEREBY TO FORCE SAID PIN MEMBER MORE FULLY WITHIN SAID BOX MEMBER.