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Patent Searching and Data


Title:
MAGNETIC BEARING
Document Type and Number:
WIPO Patent Application WO/2013/084362
Kind Code:
A1
Abstract:
This magnetic bearing (10) is provided with electromagnets (11) which include electromagnet cores (13) and coils (14) and permanent magnets (12) which, together with the electromagnets, support without contact a rotating shaft portion (21) by a magnetic attraction force. The electromagnet cores have magnetic resistance change sections (40) disposed in paths through which magnetic fields generated from the coils of the electromagnets pass. The permanent magnets are disposed at portions corresponding to the magnetic resistance change sections of the electromagnet cores. This is in order to prevent magnetic fields generated from the permanent magnets from passing through the magnetic resistance change sections.

Inventors:
TSUTSUI YUKIO (JP)
OHTO MOTOMICHI (JP)
Application Number:
PCT/JP2011/078605
Publication Date:
June 13, 2013
Filing Date:
December 09, 2011
Export Citation:
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Assignee:
YASKAWA DENKI SEISAKUSHO KK (JP)
TSUTSUI YUKIO (JP)
OHTO MOTOMICHI (JP)
International Classes:
F16C32/04
Foreign References:
JPH08232955A1996-09-10
JP2001041238A2001-02-13
JP2001146917A2001-05-29
JP2001224154A2001-08-17
Attorney, Agent or Firm:
MIYAZONO, Hirokazu (JP)
Hirokazu Miyazono (JP)
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Claims: