초록 ▼

A magnetic bearing element contains a first bearing part attached to a shaft and a second, fixed-position, bearing part surrounding the first bearing part. One of the bearing parts contains an arrangement of a plurality of alternately polarized permanent magnetic elements between which there are fer

A magnetic bearing element contains a first bearing part attached to a shaft and a second, fixed-position, bearing part surrounding the first bearing part. One of the bearing parts contains an arrangement of a plurality of alternately polarized permanent magnetic elements between which there are ferromagnetic elements and the other bearing part contains a superconducting structure. This superconducting structure should have grains made of high-T.sub.c superconducting material, whose respective grain size is larger than the thickness of each of the permanent magnetic elements. In addition, the rotor shaft should be made of a non-magnetic material. The rotor shaft may contain the bearing part with permanent magnetic elements or the structure with the high-T.sub.c superconducting material.

대표청구항 ▼

[ What is claimed is:] [1.] A magnetic bearing element for a rotor shaft having radially restoring magnetic forces in the event of a deflection of the rotor shaft from a reference position, said element comprising:a) a rotor body containing a first bearing part attached to the rotor shaft;b) a secon

[ What is claimed is:] [1.] A magnetic bearing element for a rotor shaft having radially restoring magnetic forces in the event of a deflection of the rotor shaft from a reference position, said element comprising:a) a rotor body containing a first bearing part attached to the rotor shaft;b) a second, fixed-position bearing part surrounding said rotor body;c) one of the two bearing parts containing an arrangement of a plurality of alternately and axially polarized permanent magnetic elements which are mutually set apart by intervening spaces, said spaces each being completely filled in by an intermediate element made of a ferromagnetic material;d) the other of the two bearing parts having a structure including high-T.sub.c superconducting material;e) the rotor shaft, in at least one tubular edge area facing the first bearing part, having a non-magnetic material;f) the ferromagnetic intermediate elements serving to concentrate the magnetic flux exiting from the permanent magnetic elements on the side facing the superconducting structure;g) the superconducting structure having grains made of the high-T.sub.c superconducting material, of which the majority each have an average grain size which is larger than at least the axial thickness of each of the permanent magnetic elements.