Positioning device of magnetic suspension type
US4644205A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 1985 |
| Grant date | Feb 17, 1987 |
| Priority date | — |
| Expiry date | Sep 26, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N15/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A positioning device of magnetic suspension type is disclosed, which comprises a cylindrical stationary member and a cylindrical floating member arranged coaxially with the stationary member. The floating member is supported in non-contact state with respect to the stationary member by the magnetic forces produced by a plurality of magnetic circuits. The device further includes at least one control coil disposed such that it crosses the flux passing through the magnetic circuit. When the control coil is energized, it receives an electromagnetic force for displacing the floating member in co-operation with the flux from the magnetic circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.