Magnetically controlled bearing unit
US5142177A · kind A · utility
16Cited by
11References
9Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Apr 18, 1989 |
| Grant date | Aug 25, 1992 |
| Priority date | — |
| Expiry date | Apr 18, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C32/0474
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A bearing unit comprising a rotating body, a rotating shaft and a bearing, wherein there is provided a construction with a plurality of electromagnetic poles is arranged, together with a plurality of sensors for detecting the run-out of the rotating shaft, and also comprises a control circuit for controlling the intensity of a magnetic force according to a detection output of these sensors, thereby controlling the bearing unit so that vibration and run-out of the rotating body due to inbalance thereof are effectively suppressed while making the unit to revolve around the principle axis of shape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.