Cutting blank with diamond strips in grooves
US4592433A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 4, 1984 |
| Grant date | Jun 3, 1986 |
| Priority date | — |
| Expiry date | Oct 4, 2004 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/5676
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A cutting blank, preferably for use on a drill bit for cutting through earth formations, comprises a substrate formed of a hard material and including a cutting surface. A plurality of shallow grooves are formed in the cutting surface and each groove includes opposing side and base portions. Strips of a diamond substance are disposed in the grooves and are adhered to the side and base portions and include a cutting face exposed adjacent to the cutting surface of the substrate. The strips may be arranged in various patterns and may be in non-intersecting relationship, or intersecting relationship. The grooves may include undercut portions to more positively anchor the strips to the substrate. The cutting blank is preferably bonded to a stud, with the stud being mounted in a rotary drill bit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.