Title:
SUPERCONDUCTIVE BEARING DEVICE AND ITS MANUFACTURE
Document Type and Number:
Japanese Patent JP3675010
Kind Code:
B2
Abstract:
PURPOSE: To obtain a superconductive bearing device which facilitates assembling of a magnet, prevents escaping of each circular permanent magnet and yoke of the magnet, increases magnetic field intensity due to the circular permanent magnet, and improve mechanical strength of the magnet in respect to high speed rotation.
CONSTITUTION: A superconductive bearing device has a superconductive body 1 installed on a fixed body A and a magnet 2 installed on a rotational body B, in which the superconductive body 1 is faced to the magnet 2 with a spacing. In such a device and manufacture thereof, the magnet 2 is composed of a plurality of circular permanent magnets arranged around the axis of the rotational body A and soft magnetic yokes arranged between the circular permanent magnets. A connection surface between each magnet and each yoke has a shape along a spherical surface around the center of the magnet. A peripheral end of the yoke faced to the superconductive body is projected and extended to the side of the superconductice body. The circumferential end of the yoke is circular arcuately formed in sectional area in a diameter direction.
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Inventors:
Norio Ito
Junichiro Shinozaki
Hiroshi Imaizumi
Junichiro Shinozaki
Hiroshi Imaizumi
Application Number:
JP31321995A
Publication Date:
July 27, 2005
Filing Date:
November 30, 1995
Export Citation:
Assignee:
Seiko Epson Corporation
International Classes:
F16C32/04; F16C39/06; H02J15/00; H02K7/09; H02K21/22; (IPC1-7): F16C32/04; H02K7/09; H02K21/22
Domestic Patent References:
| JP6042532A | ||||
| JP64012458U |
Foreign References:
| US3958842 |
Attorney, Agent or Firm:
Masazumi Mori