Sonic drill bit for core sampling
US7984773B2 · kind B2 · utility
7Cited by
27References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 30, 2008 |
| Grant date | Jul 26, 2011 |
| Priority date | — |
| Expiry date | Apr 16, 2029 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/48
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A drill bit for core sampling includes a body having a central axis and first end having a tapered outer surface and a radius transverse to the central axis, and an insert having a cutting surface on the first end oriented at an axial angle relative to the radius to move material displaced during drilling away from the first end.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.