Shaft and like oil seals
US4815749A · kind A · utility
13Cited by
4References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 20, 1987 |
| Grant date | Mar 28, 1989 |
| Priority date | — |
| Expiry date | Apr 20, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/3244
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A shaft seal having a lip of an elastomeric sealing ring formed with a frusto-conical band around the shaft and has an annular non-constant clearance around the shaft and wherein upon shaft rotation liquid pulsation in said clearance causes oscillation of the band which in turn causes displacement pumping towards the oil side of the shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.