US 12,352,117 B2
Power tong assembly
Tommie L. Rogers, Lafayette, LA (US); and John William Trahan, Jr., Lafayette, LA (US)
Assigned to ROGERS OIL TOOLS, LLC, Abbeville, LA (US)
Appl. No. 17/437,407
Filed by Rogers Oil Tools, LLC, Abbeville, LA (US)
PCT Filed Feb. 4, 2021, PCT No. PCT/US2021/016575
§ 371(c)(1), (2) Date Sep. 8, 2021,
PCT Pub. No. WO2021/158764, PCT Pub. Date Aug. 12, 2021.
Claims priority of provisional application 62/971,453, filed on Feb. 7, 2020.
Prior Publication US 2022/0170330 A1, Jun. 2, 2022
Int. Cl. E21B 19/16 (2006.01)
CPC E21B 19/161 (2013.01) 23 Claims
OG exemplary drawing
 
1. A power tong assembly, comprising:
a rotor having a plurality of rotatably mounted jaws, said jaws mounted on pins around a central opening, said jaws movable into and out of said opening, each of said plurality of jaws comprising a jaw die, each of said jaw dies having a toe end being the end of the die first coming into contact with a tubular positioned within said central opening with rotation of said jaw, and a heel end at the other end of said die, each of said jaw dies comprising an arcuate convex face adapted to contact said tubular disposed within said central opening;
said arcuate convex face comprising one or more zones with a plurality of teeth within each zone, at least some of said plurality of teeth having different angular orientations with respect to said die face within each zone, at least some of said plurality of teeth within said zone closest to said toe end being angled toward said heel end to a greater degree than teeth within said zone closest to said heel.