Multi-chamfer cutting elements having a shaped cutting face and earth-boring tools including such cutting elements
US9650837B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 2014 |
| Grant date | May 16, 2017 |
| Priority date | — |
| Expiry date | May 17, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/573
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A cutting element for an earth-boring tool includes a substrate and volume of superabrasive material positioned on the substrate. The volume of superabrasive material includes a cutting face having at least one recess extending into the volume of superabrasive material and/or at least one protrusion extending outward from the volume of superabrasive material. The volume of superabrasive material includes a first chamfer surface having a peripheral edge and a radially innermost edge. The peripheral edge of the first chamfer surface is located proximate a cutting edge of the volume of superabrasive material. A radial width of the first chamfer surface is between about 0.002 inch and about 0.045 inch. The volume of superabrasive material also includes a second chamfer surface having a peripheral edge and a radially innermost edge. The peripheral edge of the second chamfer surface is located adjacent the radially innermost edge of the first chamfer surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.