Anti-rotation tubular connection for flowlines or the like

An anti-rotational, tubular joint for connecting sections of conduits together, said joint comprising:

• a pin member having male threads thereon adapted to be affixed to an end of a section of conduit;
• a box member having female threads thereon adapted to be affixed to an end of another section of conduit, said female threads cooperate with said male threads to form a connection therebetween when said pin member is rotated in a first direction with respect to said box member;
• a lock sleeve slidably positioned on said box member and movable longitudinally thereon between a unlocked position and a locked position when said pin member is threaded in said box member;
• said sleeve having longitudinal grooves extending along an upper portion thereof thereby defining a plurality of resilient fingers;
• ratchet teeth on each of said plurality of said fingers;
• and
• ratchet teeth on said pin member adapted to cooperate with said ratchet teeth on said fingers when said sleeve is in said locked position to allow rotational movement between said lock sleeve and said pin member in a first direction while preventing rotational movement between said lock sleeve and said pin member in an opposite direction;
• and
• means on said lock sleeve and said box member for allowing longitudinal movement while preventing rotational movement therebetween.