Sealing apparatus for rotating shafts, in particular stern tube seal for the propeller shafts of a ship
US5209497A · kind A · utility
11Cited by
19References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 5, 1991 |
| Grant date | May 11, 1993 |
| Priority date | — |
| Expiry date | Sep 5, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S277/914
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Sealing device for rotating shafts, in particular stern tube seal for the propeller shafts of a ship, with a main seal and a backup seal, in which the main seal is designed as a rotating mechanical seal or as a lip seal, and the backup seal is designed as a gland seal, and the activation of the latter takes place by means of an expandable body, which can be pressurized with a hydraulic or pneumatic pressure medium, preferably as a function of the pressure of the medium to be sealed out.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.