Back to results
US 12,687,071 B2Granted
Downhole torque reducer
AssigneeRotojar Innovations Limited
InventorPeter Barnes Moyes
Life of this patent
Estimating the term…
Abstract
A downhole torque reducer comprises a mandrel defining a circumferentially continuous inner bearing race and a bearing sleeve defining a circumferentially continuous outer bearing race, the bearing sleeve being mounted on the mandrel such that the outer bearing race of the bearing sleeve circumscribes the inner bearing race of the mandrel. A rolling bearing arrangement is radially interposed between the inner bearing race of the mandrel and the outer bearing race of the bearing sleeve to permit the bearing sleeve and the mandrel to be rotatable relative to each other.
Claims22
A downhole torque reducer comprising:
- a mandrel defining a circumferentially continuous inner bearing race;
- a bearing sleeve defining a circumferentially continuous outer bearing race, the bearing sleeve being mounted on the mandrel such that the outer bearing race of the bearing sleeve circumscribes the inner bearing race of the mandrel, wherein the mandrel and the bearing sleeve are arranged concentrically;
- and
- a rolling bearing arrangement radially interposed between the inner bearing race of the mandrel and the outer bearing race of the bearing sleeve to permit the bearing sleeve and the mandrel to be rotatable relative to each other.
1 more element
Dependencies are inferred from the claim text.