Magnetic bearing
US4268095A · kind A · utility
12Cited by
6References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 1, 1978 |
| Grant date | May 19, 1981 |
| Priority date | — |
| Expiry date | Dec 1, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C32/0476
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Two parallel rings are secured to a rotating shaft. A stationary central ring is located between the other two rings, creating parallel air gaps. The central ring includes a radially magnetized permanent magnet creating parallel magnetic circuits across the air gaps. Conductive coils are located on either side of the permanent magnet and arranged to carry current in the same direction. When energized by a control circuit, the conductors create a magnetic field that adds to the magnetic field across one gap and subtracts from the field across the other, providing an axial force on the shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.