Rotary drill bit
US4109737A · kind A · utility
316Cited by
9References
56Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 24, 1976 |
| Grant date | Aug 29, 1978 |
| Priority date | — |
| Expiry date | Jun 24, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T407/27
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A rotary drill bit for rock drilling comprising a plurality of cutting elements mounted by interference-fit in recesses in the crown of the drill bit. Each cutting element comprises an elongated pin with a thin layer of polycrystalline diamond bonded to the free end of the pin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.