Diamond enhanced rock drill bit for percussive drilling
US5947215A · kind A · utility
89Cited by
12References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 6, 1997 |
| Grant date | Sep 7, 1999 |
| Priority date | — |
| Expiry date | Nov 6, 2017 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/567
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A rock drill bit for percussive drilling includes a steel body in which six gauge buttons and a single front button are mounted. The gauge buttons are arranged symmetrically and equally spaced about a central axis of the bit. The front button is arranged along the central axis. The front button is of larger diameter than the gauge button. At least three of the gauge buttons are diamond-enhanced, and the front button may be diamond-enhanced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.