Drill bit reservoir with controllable relief pressure
US7665547B2 · kind B2 · utility
5Cited by
13References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 17, 2006 |
| Grant date | Feb 23, 2010 |
| Priority date | — |
| Expiry date | Jul 18, 2027 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/24
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A rotary rock bit includes a lubricant reservoir with a pressure compensation assembly disposed therein. The pressure compensation assembly is adapted to permit selective adjustment of the relief pressure set by the assembly through the selective adjustment of one member in the assembly with respect to another member in the assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.