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Title:
CYLINDRICAL MAGNET AND METHOD OF MANUFACTURING THE SAME
Document Type and Number:
WIPO Patent Application WO/2005/078747
Kind Code:
A1
Abstract:
A cylindrical magnet suitably fitted to the inner peripheral surface of a metal cylinder used as a motor magnet and a method of manufacturing the cylindrical magnet wherein, a magnetic paint of a specified amount is supplied to the inner peripheral surface while the metal cylinder is being rotated about its axis, and a magnetic film is uniformly formed on the inner peripheral surface by utilizing the centrifugal force of the metal cylinder and the viscosity of the magnetic paint. In this state, the metal cylinder is being rotated continuously to promote the drying and solidification of the magnetic paint, and after the magnetic paint is solidified to a specified state, a resin in the magnetic paint is bridged.

Inventors:
Kawakami, Yoshio c/o TDK Corporation (1-13-1 Nihonbashi, Chuo-k, Tokyo 72, 10382, JP)
Otsuka, Masayuki c/o TDK Corporation (1-13-1 Nihonbashi, Chuo-k, Tokyo 72, 10382, JP)
Ishikawa, Yuji c/o TDK Corporation (1-13-1 Nihonbashi, Chuo-k, Tokyo 72, 10382, JP)
Application Number:
PCT/JP2005/002947
Publication Date:
August 25, 2005
Filing Date:
February 17, 2005
Export Citation:
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Assignee:
TDK CORPORATION (1-13-1, Nihonbashi Chuo-k, Tokyo 72, 10382, JP)
Kawakami, Yoshio c/o TDK Corporation (1-13-1 Nihonbashi, Chuo-k, Tokyo 72, 10382, JP)
Otsuka, Masayuki c/o TDK Corporation (1-13-1 Nihonbashi, Chuo-k, Tokyo 72, 10382, JP)
Ishikawa, Yuji c/o TDK Corporation (1-13-1 Nihonbashi, Chuo-k, Tokyo 72, 10382, JP)
International Classes:
H01F7/02; H01F41/02; H02K1/17; H02K15/03; H02K23/04; H01F41/16; (IPC1-7): H01F7/02; H01F41/02; H02K1/27; H02K15/03
Foreign References:
JPH06140235A
JP2004040895A
JPH03136078A
JP2002282761A
JP2002208529A
Attorney, Agent or Firm:
Okabe, Masao (No. 602, Fuji Bldg. 2-3, Marunouchi 3-chom, Chiyoda-ku Tokyo 05, 10000, JP)
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