Annular shaft seal having an elastic sealing lip
US5711534A · kind A · utility
35Cited by
7References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 6, 1995 |
| Grant date | Jan 27, 1998 |
| Priority date | — |
| Expiry date | Dec 6, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/3244
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An annular shaft seal includes an elastic sealing lip which carries a twist element at its contact surface at the side exposed to air. The twist element is designed to return any liquid which may have exited to the air side back to the liquid side of the seal over the sealing edge, with both directions of rotation of the shaft. At least two sinusoidal twist ribs having the same amplitude and phase are shifted in phase position and bear snugly and tangentially against the sealing edge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.