Superabrasive cutter with arcuate table-to-substrate interfaces
US6412580B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 25, 1998 |
| Grant date | Jul 2, 2002 |
| Priority date | — |
| Expiry date | Jun 25, 2018 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/5735
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A cutter for drilling subterranean formations including a superabrasive table formed on an end face of a supporting substrate, there being an interface between the table and the end face defined by at least one annular surface centered about the centerline of the cutter in a location adjacent the side periphery of the substrate, the annular surface having an arcuate topography of an orientation and radial width sufficient to accommodate resultant loading of the cutting edge of the cutter throughout a variety of angles with vectors normal to the surface at a variety of angles such that at least one normal vector is aligned substantially parallel to the resultant loading on the cutting edge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.