Replaceable bit nozzle
US4603750A · kind A · utility
19Cited by
12References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 2, 1984 |
| Grant date | Aug 5, 1986 |
| Priority date | — |
| Expiry date | Oct 2, 2004 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/62
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A drilling fluid nozzle for an earth boring bit is formed entirely of tungsten carbide, having hard-ground threads on its exterior for securing in the bit passage. The nozzle has an upwardly facing shoulder located below the threads which sealingly engages a downwardly facing shoulder formed in the bit passage. An O-ring seal is located above the threads.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.