Magnetic thrust bearing with permanent bias flux
US6700258B2 · kind B2 · utility
43Cited by
11References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 23, 2001 |
| Grant date | Mar 2, 2004 |
| Priority date | — |
| Expiry date | May 23, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C32/0476
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A magnetic thrust bearing having a high speed rotation capability and low cost construction. The magnetic thrust bearing has permanent magnets to provide bias flux. The magnetic circuits of the control flux and bias fluxes are substantially non-coincident, which allows for a low reluctance and efficient path for the control flux. The flux paths of the permanent magnets are completely defined with minimized airgaps for achieving higher forces and efficiency and very low control currents produce extremely large forces. No radially magnetized permanent magnets are required and no permanent magnets are attached to the rotor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.