Pressurized bearing seal assembly
US4739997A · kind A · utility
21Cited by
18References
25Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 5, 1986 |
| Grant date | Apr 26, 1988 |
| Priority date | — |
| Expiry date | Sep 5, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/40
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A pressurized bearing seal which uses pressurized air (1) to expand a sealing member which surrounds a shaft supported by the bearing to create a seal between the shaft and bearing, and (2) for an air purge from the bearing along the shaft to prevent intake of foreign particles into the bearing along the shaft. A ring assembly, which is secured to the bearing, surrounds the expandable member and has a conduit formed therein for purging or bleeding pressurized air along the shaft to the atmosphere.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.