Bearings for downhole tools, downhole tools incorporating such bearings, and related methods
US10519720B2 · kind B2 · utility
1Cited by
15References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 10, 2017 |
| Grant date | Dec 31, 2019 |
| Priority date | — |
| Expiry date | Sep 18, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2352/00
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Bearing systems configured for use on a downhole tool may include a tensioner bolt having a complementary nut, the tensioner bolt and nut sized and shaped to secure the rolling cutter member to a head. A radial bearing may include an annular sleeve sized and shaped to surround the head. A shaft washer may be sized and shaped to surround the head between an enlarged head of the tensioner bolt and the annular sleeve. A bearing element may be configured for positioning proximate the head, the bearing element comprising an upper surface configured for sliding, frictional contact with a lower surface of the shaft washer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.