Sealing assembly for a device having a rotatable shaft
US4804196A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 12, 1985 |
| Grant date | Feb 14, 1989 |
| Priority date | — |
| Expiry date | Nov 12, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S277/928
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
To achieve increased critical speeds in turbines, pumps and other machines by limiting overhang while eliminating secondary sealing components, a face seal is provided for a rotatable shaft. The face seal includes an annular sealing ring formed of a rigid material and having a sealing surface adapted to be disposed in a plane substantially transverse to the rotatable shaft. The face seal also includes a static seal-carrying member formed of a rigid material and spaced from the annular sealing ring at a location remote from the sealing surface. Additionally, an elastomeric seal is disposed between the annular sealing ring and the static seal-carrying member in integrally associated relation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.