Drill bit, hard member, and bit body
US6595305B1 · kind B1 · utility
69Cited by
60References
38Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 9, 2000 |
| Grant date | Jul 22, 2003 |
| Priority date | — |
| Expiry date | Jun 9, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23B2251/68
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A rotary drill bit for penetrating earth strata wherein the drill bit includes a drill bit body that has an axial forward end. The drill bit body has a hard insert, which is preferably monolithic, that is affixed to the drill bit body at the axial forward end thereof. The hard insert presents at least three discrete leading cutting edges for cutting the earth strata.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.