Button insert for rock drill bits
US4776413A · kind A · utility
21Cited by
10References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 2, 1986 |
| Grant date | Oct 11, 1988 |
| Priority date | — |
| Expiry date | Sep 2, 2006 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/56
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A button insert (10) for rock drill bits comprising a base portion (11) intended to be secured in the body of the drill bit and a cutting tip (12) being integral with the base portion (11). The cutting tip (12) comprises a portion (13) that is concave in an arbitrary longitudinal section through the button insert (10).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.