Self-contained low power fluid bearing and bearing seal
US5161900A · kind A · utility
24Cited by
14References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 10, 1992 |
| Grant date | Nov 10, 1992 |
| Priority date | — |
| Expiry date | Apr 10, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C33/746
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A bearing using magnetic fluid for lubrication is provided with a magnetic seal circuit to retain the magnetic fluid in the baring. The magnetic seal circuit comprises two annular ring magnets surrounding a shaft and placed on opposite sides of the bearing. The two ring magnets are magnetically joined by a shunt. The shunt controls stray flux and permits the disposition of the magnet at a small distance from the shaft, thus concentrating the flux in the magnetic seal gap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.