Hydrodynamic seal with collector bead
US4183543A · kind A · utility
27Cited by
4References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 13, 1978 |
| Grant date | Jan 15, 1980 |
| Priority date | — |
| Expiry date | Nov 13, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/3244
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An improved liquid to gas seal is disclosed for a bi-directional rotatable shaft. The seal is of the annular lip type and has a circular sealing edge which engages the shaft. The gas side of the seal is provided with an annular bead parallel to and spaced from the sealing edge and with a plurality of asymmetrical ribs which efficiently pump liquid escaping past the sealing edge back to the liquid side of the seal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.