Coupler for connecting the plunger downhole sucker rod pump rod string

摘要

Coupler for connecting the plunger of the downhole sucker rod pump rod string comprising a sleeve connected to the plunger with formed in its upper part groove, a collet with petals and a shank with a conical part, connected to coupling with the rod string, wherein there toothed projections on the ends of the petals collet directed to the center and taper shank portion configured corrugated.