Rotating shaft seal
US5666012A · kind A · utility
5Cited by
11References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 29, 1994 |
| Grant date | Sep 9, 1997 |
| Priority date | — |
| Expiry date | Jul 29, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S277/927
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A means of sealing a rotating shaft against high fluid pressure with low friction torques, low leakage and low wear. This accomplished by use of sealing assembly comprising a sliding and a floating seal assembly separated by a lubricant filled chamber. The sliding seal is exposed to the high pressure environment which is kept isolated from the drive means by the chamber. Thus, the high pressure environment leaks into the chamber rather than the environment of the drive means and the non-harmful lubricant leaks slowly into the drive means environment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.