Integrated bearing section and method
US10851589B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2018 |
| Grant date | Dec 1, 2020 |
| Priority date | — |
| Expiry date | Dec 14, 2038 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B4/003
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An integrated bearing section includes a mandrel partially disposed within a housing. The bearing section includes spherical members disposed between the mandrel's outer surface and the housing's inner surface. A radial bearing portion is formed by spherical members disposed partially within grooves and engaging a flat profile opposing surface. The grooves may be in the mandrel's outer surface, an outer surface of a mandrel sleeve, the housing's inner surface, or an outer radial bearing's inner surface. The flat profile opposing surface may be on an outer radial bearing's inner surface, the housing's inner surface, the mandrel's outer surface, or a mandrel sleeve's outer surface. A thrust bearing portion is formed by spherical members disposed partially within grooves in two opposing surfaces, such as the mandrel's outer surface or a mandrel sleeve's outer surface, and the housing's inner surface or an outer thrust bearing's inner surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.