Threadless type well tubing safety joint

Claim 1

A SAFETY JOINT FOR PIPE STRINGS COMPRISING OUTER AND INNER TUBULAR MEMBERS HAVING SMOOTH FACED ADJACENT WALL SURFACES ADAPTED TO RECEIVE BY A STAB TYPE FIT THE INNER TUBULAR MEMBER WITHIN THE OUTER TUBULAR MEMBER WITH THE TUBULAR MEMBERS BEING IN TELESCOPING RELATIONSHIP RELATIVE TO EACH OTHER, MEANS FOR LIMITING RELATIVE TRAVEL OF THE TUBULAR MEMBERS IN A GIVEN DIRECTION, SAID INNER TUBULAR MEMBER HAVING A SERIES OF CONNECTED SURFACES EACH INCLINED TOWARD THE AXIS OF THE INNER TUBULAR MEMBER AND DEFINING ANNULAR LATCHING ELEMENTS, A SUBSTANTIALLY RADIAL SHOULDER ON THE INNER WALL OF THE OUTER TUBULAR MEMBER FOR DEFINING ONE WALL OF AN ANNULAR RECESS THEREIN, AN UPWARDLY AND INWARDLY INCLINED WALL AXIALLY SPACED FROM SAID SHOULDER FOR DEFINING ANOTHER WALL OF SAID ANNULAR RECESS, SAID ANNULAR RECESS IN THE OUTER TUBULAR MEMBER BEING DISPOSED ADJACENT THE ANNULAR LATCHING ELEMENTS OF THE INNER TUBULAR MEMBER WHEN SAID TUBULAR MEMBERS ARE DISPOSED IN THE TELESCOPING RELATIONSHIP BY THE STAB TYPE FIT, RESILIENT ANNULAR LATCHING STRUCTURE EXPANDABLY AND CONTRACTABLY DISPOSED WITHIN THE CONFINES OF THE ANNULAR RECESS, SAID LATCHING STRUCTURE HAVING A SERIES OF CONNECTED SURFACES FOR DEFINING COMPLEMENTARY LATCHING ELEMENTS DISPOSED IN COOPERATING RELATIONSHIP WITH THE LATCHING ELEMENTS OF THE INNER TUBULAR MEMBER, CAM MEANS DEFINED BY THE OUTER PERIPHERAL PORTION OF THE ANNULAR LATCHING STRUCTURE FOR ENGAGEMENT WITH THE INCLINED WALL OF THE RECESS IN THE OUTER TUBULAR MEMBER, SAID CAM MEANS BEING EFFECTIVE TO URGE THE LATCHING ELEMENTS OF THE ANNULAR LATCHING STRUCTURE INTO INTERLOCKING ENGAGEMENT WITH THE LATCHING ELEMENTS OF THE INNER TUBULAR MEMBER ON RELATIVE MOVEMENT OF THE TUBULAR MEMBERS IN THE GIVEN DIRECTION WHILE RESTRAINING RELATIVE MOVEMENT OF THE TUBULAR MEMBERS IN ANOTHER DIRECTION THAT IS OPPOSED TO THE GIVEN DIRECTION, A DEVICE ESTABLISHING A LOCALE FOR ENABLING AN END POR-