Oil seal for a high speed rotating shaft
US5538258A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 1995 |
| Grant date | Jul 23, 1996 |
| Priority date | — |
| Expiry date | Feb 22, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C33/80
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An improved oil seal is provided for sealing passage of rotatable shaft through an end wall of a bearing housing in a turbomachine or the like, wherein the shaft is rotatably supported within the bearing housing by oil-lubricated bearings. The improved oil seal comprises a slinger rotor mounted on the shaft for rotation therewith. The slinger rotor includes a radially outwardly extending slinger ring with radially open slinger ports formed therein, in combination with an axially projecting centrifuge sleeve defining an internal tapered centrifuge surface disposed in close running clearance with an axially projecting cylindrical wall segment on the end wall. During shaft rotation, the centrifuge surface pumps oil in a direction away from the end wall to the slinger ring for discharge through the slinger ports to the interior of the bearing housing. In addition, in the preferred form, the slinger rotor has an internal bore with axially extending lands for press-fit mounting onto the rotating shaft, wherein the lands are separated by ramped slots defining additional tapered centrifuge surfaces for pumping oil away from the end wall of the bearing housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.