Superconduction bearing

Details Superconduction bearing Superconduction bearing

1992-07-30

1994-05-17

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310156, 505876, H02K 709, G11B 555

Patent

active

053131304

ABSTRACT:
A superconduction bearing is provided in which the load capacity and rigidity of a rotary member are improved, run-out of the rotary member is prevented to support the rotary member in a stable, non-contacting manner, and manufacturing cost is reduced. The superconduction bearing includes a rotary member and a disk formed on the rotary member. The disk has permanent magnets provided thereon. The permanent magnets are magnetized to have opposite poles on top and bottom sides thereof. A permanent magnet section is thus formed by the disk and the permanent magnets. Superconductors are concentrically provided for rotatably supporting the rotary member. The permanent magnet section and the superconductor section are positioned opposite to each other. The width and thickness of the permanent magnets are set to 5 to 10 times the distance between the permanent magnet section and the superconductor section.

REFERENCES:
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patent: 3673444 (1972-06-01), Kawabe et al.
patent: 4886778 (1989-12-01), Moon et al.
patent: 4920291 (1990-04-01), McSparran
patent: 5126611 (1992-06-01), Armstrong et al.
patent: 5130588 (1992-07-01), Armstrong et al.
patent: 5159219 (1992-10-01), Chu et al.
patent: 5220232 (1993-06-01), Rigney, II et al.
patent: 5256638 (1993-10-01), Weinberger et al.
Hayakawa et al., "Advances in Superconductivity IV", Oct. 1991, pp. 1085-1088.

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