Mechanical seals
US6428011B1 · kind B1 · utility
37Cited by
13References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 16, 1999 |
| Grant date | Aug 6, 2002 |
| Priority date | — |
| Expiry date | Sep 16, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/3404
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A mechanical shaft seal includes stationary and rotary assemblies providing mating seating faces 3, 11 such that first and second fluids are kept separate from each other. A barrier fluid system provides a third fluid between the first and second fluids and a flow inducer 13 promotes axial flow of the barrier fluid in the desired direction irrespective of the direction of rotation of the rotary assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.