Radial shaft sealing ring
US5427387A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 15, 1993 |
| Grant date | Jun 27, 1995 |
| Priority date | — |
| Expiry date | Jan 15, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/3244
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A radial shaft sealing ring having a sealing axis and a sealing lip of polymer material is disclosed. The ring contacts the circumference of a shaft against which a seal is formed via a sealing lip halving ribs that are evenly distributed in the circumferential direction and which project radially inward. The sealing lip is delimited on the inside by a hollow-conical inner surface, which is widened in diameter in the direction of the side facing away from the sealed space. On the side of the sealing lip facing away from the space to be sealed, the inner surface forms a first angle with the sealing axis, which is 0.02 to 0.5 times as great as a second angle formed by this inner surface on the side of the sealing lip facing the sealed space and by the sealing axis. The ribs are formed as a corrugation of the inner surface which continues only in the circumferential direction along a circular circumferential line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.