Downhole drilling tool
US7377337B2 · kind B2 · utility
13Cited by
15References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 12, 2005 |
| Grant date | May 27, 2008 |
| Priority date | — |
| Expiry date | Apr 18, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D41/18
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A downhole drilling tool 136 comprises a drillstring 138, a drilling head 140, and a freewheel 144 for transferring drive from the drillstring to the drilling head. The freewheel 144 is positioned between the drillstring 138 and the drilling head 140.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.