Drilling apparatus with percussive action cutter
US7461706B2 · kind B2 · utility
4Cited by
10References
37Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 26, 2007 |
| Grant date | Dec 9, 2008 |
| Priority date | — |
| Expiry date | Mar 26, 2027 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/40
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A drilling apparatus includes a cutting structure defined by a percussive action cutter and at least one other cutter. The percussive action cutter is adapted to be urged in a drilling direction by hydraulic pressure force, while the other cutter is urged in a drilling direction by mechanical force.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.