Patent · US Expired

Magnetic bearing having triaxial position stabilization

US4620752A · kind A · utility

67Cited by

10References

20Claims

0Family size

Assignee

Kernforschungsanlage Lulich Gesellschaft mit beschrankter Haftung · DE

Inventors

Johan K. Fremerey · Bonn, DE
Albrecht Weller · Steinbach, DE

Key dates

Filing date	Mar 13, 1985
Grant date	Nov 4, 1986
Priority date	—
Expiry date	Mar 13, 2005

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16C2361/55
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A magnetic bearing having contactless position stabilization of a supported body which includes a damping and aligning arrangement. This arrangement includes two spaced rotating annular permanent magnets which form a gap therebetween and which are attached to a rotor supported by the bearing. A stationary plate having good electrical conductivity and extending into the gap between the permanent magnets, is cut by their rotating magnetic flux. Mechanical disturbances of the rotor generate eddy-currents in the conductive plate which currents damp out these disturbances. A portion of the plate outside the gap is much thicker than the portion in the gap and provides a very low resistance path for the eddy-currents.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.