Quick coupling device for tubular bodies

Claim 1

A QUICK COUPLING DEVICE FOR TUBULAR BODIES, COMPRISING, A MALE MEMBER HAVING A PIN PORTION, A FEMALE MEMBER HAVING A TUBULAR SOCKET FOR TELESCOPICALLY RECEIVING SAID PIN PORTION, A SECTION OF THREADS ON SAID PIN PORTION, A NUT THREADABLY DISPOSED ABOUT SAID THREAD SECTION AND INSERTIBLE THEREWITH ENTIRELY WITHIN SAID SOCKET, COOPERATING CAM ELEMENTS CARRIED ON THE EXTERIOR OF SAID NUT AND ON THE INTERIOR OF SAID SOCKET INITIALLY ENGAGEABLE TO STOP RELATIVE ROTATION BETWEEN SAID NUT AND SAID FEMALE MEMBER, SAID CAM ELEMENTS HAVING INTER-ENGAGING CAM SURFACES SHAPED TO URGE SAID MEMBERS AXIALLY TOWARD EACH OTHER IN RESPONSE TO RELATIVE ROTATION BETWEEN SAID MALE MEMBER AND SAID NUT AFTER INITIAL ENGAGEMENT OF SAID CAM ELEMENTS, AND ANNULAR SHOULDER MEANS CARRIED BY SAID MEMBERS IN LONGITUDINALLY SPACED RELATION TO THEIR RESPECTIVE END FACES, SAID SHOULDER MEANS BEING ENGAGEABLE BY THE RELATED ANNULAR END FACES OF THE RESPECTIVE MEMBERS IN RESPONSE TO SAID LAST-MENTIONED RELATIVE ROTATION WHEREBY TO PROVIDE METAL-TO-METAL SEALING BETWEEN SAID SHOULDERS AND THE RESPECTIVE END FACES ON OPPOSITE SIDES OF SAID NUT.