Sealing system for a vertically disposed shaft
US5961124A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 28, 1997 |
| Grant date | Oct 5, 1999 |
| Priority date | — |
| Expiry date | Apr 28, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C33/80
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A sealing system for an essentially vertical shaft includes an active sealing element disposed between a first structural part rotating with the shaft and a second structural part stationary on a housing. A wall of the housing separates an upper oil-free volume from a lower volume containing oil. The oil flows through the sealing system through a gap formed by the first structural part and a third structural part stationary on the housing. The active sealing element is preferably a threaded shaft seal. In another embodiment, the active sealing element is a combination of a primary contact seal and a threaded shaft seal. The oil flow removes heat generated by the rotating system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.