Drill bits and earth-boring tools including shaped cutting elements
US9316058B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2013 |
| Grant date | Apr 19, 2016 |
| Priority date | — |
| Expiry date | May 1, 2034 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/46
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Cutting elements for an earth-boring tool include a substrate base and a cutting tip. The cutting tip may include a first generally conical surface, a second, opposite generally conical surface, a first flank surface extending between the first and second generally conical surfaces, and a second, opposite flank surface. The cutting tip may include a central axis that is not co-linear with a longitudinal axis of the substrate base. The cutting tip may include a surface defining a longitudinal end thereof that is relatively more narrow in a central region thereof than in a radially outer region thereof. Earth-boring tools include a body and a plurality of such cutting elements attached thereto, at least one cutting element oriented to initially engage a formation with the first or second generally conical surface thereof. Methods of drilling a formation use such cutting elements and earth-boring tools.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.