Rotary drill bit with lip seal in roller cone bit
US6357540B1 · kind B1 · utility
6Cited by
16References
12Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jun 7, 1999 |
| Grant date | Mar 19, 2002 |
| Priority date | — |
| Expiry date | Jun 7, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S277/944
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A roller-cone drill bit in which a double lip seal, made of a self-lubricating elastomer, protects the bearings from the mud.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.