Patent ID: 7958787

Claim:
An oilfield tubular torque wrench comprising: a lower tong including a recess for accepting an oilfield tubular positioned along an axis passing through the recess; an upper tong including a recess, the upper tong being mounted above the lower tong with the recess of the upper tong positioned above the recess of the lower tong so that the axis passes therethrough; pipe gripping dies in the recesses of the upper tong and the lower tong, the pipe gripping dies being drivable between an extended position and a retracted position; a swivel bearing comprising a bearing ring assembly between the upper tong and the lower tong permitting the upper tong and the lower tong to swivel relative to each other while the recesses remain positioned with the axis passing therethrough; a drive system connected between the upper tong and the lower tong, the drive system configured to generate a force vector to drive the upper tong and lower tong to swivel on the swivel bearing; and at least one of (i) a system to measure the actual radius measured perpendicularly to the force vector and between the force vector and the axis, and (ii) a system to measure the actual force vector being generated by the drive system when operational conditions are considered.