Title:
SUPERCONDUCTIVE FLOATING TYPE TURNING GEAR
Document Type and Number:
Japanese Patent JP2799802
Kind Code:
B2
Abstract:
PURPOSE: To make the surface flux density of a permanent magnet uniformizable as well as to secure the smooth rotation of a turntable, in a superconductive floating type turning gear that sets up a ringlike permanent magnet and an oxide superconductor rotatably in a relative manner.
CONSTITUTION: Ringlike permanent magnets 1 consisting of Nd-Fe-B permanent magnets of six, twelve and eighteen divisions are embedded and set up in one side of a nonmagnetic material turntable 3 concentrically with a shaft 2 as the center, and each of ringlike metal soft magnetic materials 4 in the same form as the magnet is installed on each top of these ringlike permanent magnets 1. Since each surface flux density of these divided type permanent magnets installed on the turntable is uniformizable, the extent of resistance against rotation becomes lessened, and thus turning performance is improvable in this way.
Inventors:
Kei Utsuki
Masutaro Hayase
Masutaro Hayase
Application Number:
JP18629592A
Publication Date:
September 21, 1998
Filing Date:
June 19, 1992
Export Citation:
Assignee:
Sumitomo Special Metal Co., Ltd.
International Classes:
F03G3/00; F03G3/08; F16C32/04; F16C39/06; H01L39/00; H02J15/00; H02K7/09; (IPC1-7): F03G3/08; F16C32/04; H01L39/00; H02K7/09
Domestic Patent References:
| JP4282050A | ||||
| JP4300419A | ||||
| JP1291657A |
Attorney, Agent or Firm:
Yoshihisa Oshida
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