Patent ID: 6727617
Filing Date: 2004-04-27
Classification: F16C

Abstract:
A magnetic bearing for supporting a rotatable member including integrated thrust and rotor poles positioned with respect to a stationary member comprising:first magnetic field generating means for generating an axially polarized magnetic field linked magnetically through first and second air gaps between the rotatable member and the stationary member, the first axially polarized magnetic field generating means comprising first and second accurate members of high magnetic permeability and a single controllable electromagnetic coil circumferentially positioned about said first and second actuate members and radially spaced from the rotatable member, said first and second arcuate members each comprising a plurality of separate magnetic segments; and a single radial pole assembly for generating a radially polarized magnetic field and being linked magnetically to the rotatable member through an air gap between the thrust disc and a radial pole assembly to provide radial magnetic flux coupling of the rotatable member to the stationary member.