Constant force downhole anchor tool
US10094189B2 · kind B2 · utility
1Cited by
2References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 10, 2014 |
| Grant date | Oct 9, 2018 |
| Priority date | — |
| Expiry date | Dec 16, 2034 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B23/0411
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A downhole tool anchor is disclosed. In one implementation, a downhole anchor tool may include a housing, an axial drive in the housing, a rack connected to the axial drive, a pinion in the housing, the pinion having teeth that engage teeth on the rack, a gear tube within the pinion, the gear tube having internal threads, a slip rod having external threads that engage the internal threads within the gear tube, and a radial bearing coupled to the gear tube, the radial bearing having a slip rod alignment member that prevents the slip rod from free spinning in the gear tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.