Patent ID: 9200488
Filing Date: 2015-12-01
Classification: E21B,F16C

Abstract:
1. A bearing assembly for use in an apparatus comprising a housing and a shaft, wherein the shaft has a shaft axis, wherein the shaft is rotatably connected with the housing, wherein the housing defines an interior of the housing, an exterior of the housing and a first housing end, wherein the shaft is comprised of a shaft extension which extends from the interior of the housing at the first housing end, and wherein the shaft extension defines a first bearing shaft surface, the bearing assembly comprising a first thrust bearing for transferring a first axial load between the shaft and the housing, wherein the first thrust bearing is located axially between the first housing end and the first bearing shaft surface, wherein the first thrust bearing is a rolling element bearing, and wherein the first thrust bearing is further comprised of a lubricant selected from the group consisting of a lubricating oil and a grease.