Underreamer for increasing a bore diameter
US9915100B2 · kind B2 · utility
2Cited by
8References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 12, 2014 |
| Grant date | Mar 13, 2018 |
| Priority date | — |
| Expiry date | Nov 12, 2034 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/265
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An underreamer for increasing the diameter of a bore. The underreamer includes a substantially cylindrical body. A mandrel may extend axially through the body. One or more cutter blocks are movably coupled to the body. A ratio of a height of the cutter block to a diameter of the body is between about 0.35:1 and about 0.50:1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.