Magnetic bearing element for a rotor shaft using high-T.sub.C superconducting materials
US5710469A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 13, 1994 |
| Grant date | Jan 20, 1998 |
| Priority date | — |
| Expiry date | Dec 13, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C32/0438
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.