Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k
Patent
1991-08-29
1993-10-19
Oberleitner, Robert J.
Superconductor technology: apparatus, material, process
High temperature , per se
Having tc greater than or equal to 150 k
188164, 188267, F16F 1503, H01L 3900
Patent
active
052545288
ABSTRACT:
A brake device which performs a braking operation on a rotating body in a non-contact mode, thereby substantially eliminating the need for replacement of components. To achieve this object, the invention provides a brake device which is especially suitable for use at temperatures allowing Type II superconducting properties. A magnet and a superconductor are provided, one of which is provided on a rotating body to be braked. The quantity of magnetic flux from the magnet which permeates the superconductor is controlled so as to provide a counter-rotative force to the rotating body. According to a first aspect of the invention, a permanent magnet is provided, along with a displacing mechanism to change the distance between the permanent magnet and the superconductor. According to a second aspect of the invention, an electromagnet is provided, along with a control device for controlling the magnetic strength of the electromagnet.
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Koyo Seiko Co. Ltd.
Muratori Alfred
Oberleitner Robert J.
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