MAGNETIC LEVITATION DEVICE

WIPO Patent Application WO/1995/020264

A1

A ferromagnetic body (21) of a movable part (2) is so disposed as to oppose a high-temperature superconductive body (11) of a fixed part (1), and the high-temperature superconductive body (11) is cooled to a temperature below a critical temperature in a magnetic field to put the same in a superconductive state. The attractive force between the high-temperature superconductive body (11) and the ferromagnetic body (21), produced when the magnetic flux pinned to the high-temperature superconductive body (11) is passed through the ferromagnetic body (21), is utilized as the force holding the movable part (2). Stable levitation can be achieved without control in a non-contact manner by only a combination of the high-temperature superconductive body (11) and ferromagnetic body (21) having such a form that the attractive force weakens when the gap decreases below a predetermined value.

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TSUTSUI YUKIO (JP)
HIGUCHI TOSHIRO (JP)

PCT/JP1995/000075

July 27, 1995

January 24, 1995

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KANAGAWA KAGAKU GIJUTSU AKAD (JP)
TSUTSUI YUKIO (JP)
HIGUCHI TOSHIRO (JP)

F16C39/06; H02N15/04; (IPC1-7): H02N15/04

JPH05240248A	1993-09-17
JPH0678412A	1994-03-18
US3493274A	1970-02-03

Journal of Electricity Society, Vol. 112, No. 10, October 1992 (10.92), pages 801 to 804, Fig. 6.
Journal of Precision Engineering Society, Vol. 58, No. 11, November 1992 (11.92), page 2, upper right Figure.
See also references of EP 0695027A4

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