US 12,312,897 B1
Sucker rod stripper
Derek Steve Ingraham, Beasley, TX (US); Shawn Neal Adair, Forney, TX (US); and Mayowa Kolawole Mosuro, Houston, TX (US)
Assigned to Datwyler Parco Holdings Inc., Wilmington, DE (US)
Filed by Datwyler Parco Holdings Inc., Wilmington, DE (US)
Filed on Nov. 29, 2023, as Appl. No. 18/522,423.
Int. Cl. E21B 33/08 (2006.01)
CPC E21B 33/08 (2013.01) 12 Claims
OG exemplary drawing
 
1. A sucker rod stripper comprising a housing defining an axial rod passageway therethrough for a sucker rod of an oil well pump, two rubber packings, which are diametrically arranged around the rod passageway, each of the two rubber packings provided with an axial sucker rod groove for stripping the sucker rod, and two radially extending feed screws each extending through a threaded opening in an side wall of the housing and operatively connected to one of the two rubber packings to advance and retract the rubber packing in radial direction within the housing,
wherein a damping element is arranged between each of the two feed screws and the corresponding rubber packing to allow retraction of the rubber packings when a thicker section of a sucker rod passes between the rubber packings,
wherein the damping element comprises a compression spring and a feed rod with a first end connected to the compression spring, and
wherein the compression spring is entirely arranged in a blind hole of the feed screw and the feed rod is partially arranged in the blind hole.