Patent ID: 7735879

Claim:
A sucker rod connection comprising: a tapered male member at the end of a bar of a sucker rod including a plurality of external trapezoidal threads having a crest and an external thread pitch diameter; and a tapered female member including a plurality of internal trapezoidal threads having a root and an internal thread pitch diameter, in which the male member is capable of being received in threaded engagement with the female member; wherein the threads of the male member are in flank-to-flank contact, both flanks on each thread, with the threads of the female member, with the crest of the external threads being larger than the root of the internal threads creating diametrical interference between the male and female members, preventing disengagement, and substantially reducing axial interference between the male and female members; wherein the diametrical interference provides a positive value difference by subtracting the pitch diameter of the internal threads of the female member from the pitch diameter of the external threads of the male member.