Face seal with rotatable seal ring
US4351533A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 5, 1981 |
| Grant date | Sep 28, 1982 |
| Priority date | — |
| Expiry date | Jun 5, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D55/15
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A face seal assembly (10) having an intermediate seal ring (38) is disclosed. The intermediate seal ring (38) is disposed between a pair of opposing metal seal faces (36,37) of the seal assembly (10) so that the faces (36,37) contact opposite sealing faces (39,40) on the ring (38), instead of each other. Means (44) are provided for rotating the intermediate seal ring (38) at a speed which is proportionately less than the rotational speed between the opposing seal faces (36,37). This rotation of the intermediate ring (38) reduces the velocities of the contacting seal faces. The face seal assembly (10) is thus capable of use in higher speed applications without incurring scoring of the seal faces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.