Means for threadedly joining two members

Claim 1

IN A MEANS FOR INTERLOCKING TWO MEMBERS, A FIRST MEMBER HAVING A GENERALLY CYLINDRICAL SURFACE WITH A HELICAL THREAD-LIKE CONFIGURATION, SAID FIRST MEMBER HAVING A LOBULAR CROSS SECTION WITH EACH 360 DEGREES OF SAID THREAD-LIKE CONFIGURATION INCLUDING A PLURALITY OF SPACED RADIAL RELIEFS WITH AN OUTSTANDING RADIAL LOCKING AREA BETWEEN EACH RADIAL RELIEF, THE MAXIMUM OUTSIDER RADIUS OF SAID RADIAL RELIEFS BEING LESS THAN THE PITCH RADIUS OF SAID LOCKING AREAS, A SECOND MEMBER HAVING A SMOOTH GENERALLY CYLINDRICAL SURFACE AND A LOBULAR CROSS SECTION GENERALLY THE SAME AS SAID FIRST MEMBER, EACH 360 DEGREES OF SAID SECOND MEMBER INCLUDING A PLURALITY OF SPACED RADIAL RELIEFS WITH AN OUTSTANDING RADIAL LOCKING AREA BETWEEN EACH RADIAL RELIEF, SAID FIRST AND SECOND MEMBERS HAVING RELATIVE CROSS SECTIONAL DIMENSIONS SUCH THAT THEY MAY BE PLACED ONE INSIDE THE OTHER; WITHOUT INTERLOCKING CONTACT, ONLY WHEN THE RADIAL RELIEFS ON THE FIRST MEMBER ARE GENERALLY IN ALIGNMENT WITH THE RADIAL RELIEFS OF THE SECOND MEMBER, RELATIVE ROTARY MOVEMENT OF SAID MEMBERS BEING EFFECTIVE TO CAUSE THE OUTSTANDING LOCKING AREAS OF SAID FIRST MEMBER TO INTERLOCK WITH THE SECOND MEMBER, AND LIMITING MEANS INCLUDING AT LEAST ONE COMPRESSIBLE PROJECTION IN CONTACT WITH A RADIALLY EXTENDING BEARING SURFACE OF ONE OF SAID MEMBERS AND EXTENDING TOWARD THE OTHER MEMBER, SAID PROJECTION HAVING AN EFFECTIVE COMPRESSIBLE LENGTH WHICH LIMITS AXIAL MOVEMENT BETWEEN SAID MEMBERS AND LIMITS RELATIVE ROTATION OF SAID MEMBERS TO THAT FRACTION OF A FULL REVOLUTION FOUND BY DIVIDING ONE BY TWO TIMES THE NUMBER OF RADIAL LOCKING AREAS IN 360 DEGREES OF SAID THREAD-LIKE CONFIGURATION.