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Title:
TAPERED FERRITE CORE, METHOD AND DEVICE FOR MANUFACTURING SAME, AND INDUCTANCE ELEMENT IN WHICH SAME IS USED
Document Type and Number:
WIPO Patent Application WO/2018/225719
Kind Code:
A1
Abstract:
A tapered ferrite core having a columnar or cylindrical shape in which the length is greater than the outer diameter, and having a tapered part formed by a ground surface on at least one end section, the tapered part having a streak-shaped grinding mark along the longitudinal direction of the ferrite core. The tapered ferrite core can be formed by performing centerless grinding using a rotating grindstone while turning the ferrite core.

Inventors:
MAETA Akihiro (70-2, Naneicho, Tottori-sh, Tottori 21, 〒6891121, JP)
YAMASAKI Katsumasa (70-2, Naneicho, Tottori-sh, Tottori 21, 〒6891121, JP)
Application Number:
JP2018/021531
Publication Date:
December 13, 2018
Filing Date:
June 05, 2018
Export Citation:
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Assignee:
HITACHI METALS, LTD. (2-70, Konan 1-chome Minato-k, Tokyo 24, 〒1088224, JP)
International Classes:
H01F41/02; B24B5/24; B24B5/313; H01F27/255
Foreign References:
JP2003170339A2003-06-17
JPH01106152U1989-07-17
JPS58138010A1983-08-16
JPH08130119A1996-05-21
JPH0230465A1990-01-31
JPS6350143B21988-10-06
JP2001212729A2001-08-07
JPH0850535A1996-02-20
Attorney, Agent or Firm:
TAKAISHI Kitsuma (Kagurazaka FN Bldg. 5F, 67 Kagurazaka 6-chome, Shinjuku-k, Tokyo 25, 〒1620825, JP)
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