Insert retention and cooling apparatus for drag bits
US4334585A · kind A · utility
39Cited by
5References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 14, 1980 |
| Grant date | Jun 15, 1982 |
| Priority date | — |
| Expiry date | Jul 14, 2000 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/62
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A one piece diamond drag bit is disclosed that utilizes individual diamond insert studs strategically placed into the face of the bit. Each insert is pinned in a "keyway" formed between a groove in the bit body and a complementary groove in the insert stud. A hollow locking pin locks each insert in place. Each pin communicates with a fluid chamber formed by the drag bit body and directs fluid over the cutting disk of each insert during operation of the drag bit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.