Rotary shaft seal assembly
US4809992A · kind A · utility
12Cited by
18References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 23, 1987 |
| Grant date | Mar 7, 1989 |
| Priority date | — |
| Expiry date | Nov 23, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/54
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A rotary seal comprises an elastomeric sleeve adapted to be mounted on a shaft, a pair of washers encompassing the ends of the sleeve, wear plates engaged against the anti-friction washers, and a compression device for urging the washers toward each other axially to fore-shorten the sleeve and define between the sleeve and washers a torque driving connection, said washers being formed of anti-friction polymeric material and said wear plates being formed of metal or vice versa.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.