High-productivity drill bits
US9784038B2 · kind B2 · utility
0Cited by
3References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 24, 2013 |
| Grant date | Oct 10, 2017 |
| Priority date | — |
| Expiry date | Sep 23, 2034 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/38
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Drill bits having flushing channels and surface features that cooperate to evacuate cuttings. The surface features can be provided as flutes, fins, and/or ribs defined in a body portion of the bits. Optionally, the surface features can define back-cutting edges the permit back reaming.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.