Radially undulating shaft seal
US5190299A · kind A · utility
34Cited by
5References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 23, 1991 |
| Grant date | Mar 2, 1993 |
| Priority date | — |
| Expiry date | Oct 23, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/3244
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A radially undulating shaft seal having a seal axis and a lip of polymeric material that surrounds the shaft to be sealed. The lip is demarcated on the inside by an inner surface that tapers out in the form of a hollow cone toward the side facing away from the space being sealed; the lip also has ribs that project radially inward distributed uniformly around it. The ribs (3) consist of undulations propagated along the inner surface (2.1) parallel with the circumference. The difference between the adjacent maximal and minimal intervals (4 & 5) along the circumference between the inner surface and the axis (6) is less than 0.3 mm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.