Inductor devices – With closed core interrupted by an air gap
Reexamination Certificate
2011-06-21
2011-06-21
Mai, Anh T (Department: 2832)
Inductor devices
With closed core interrupted by an air gap
C336S212000, C336S221000, C336S233000
Reexamination Certificate
active
07965163
ABSTRACT:
Provided is an annular reactor core formed of a U-shaped core and core legs. Core joints including end portions and two protrusions form the U-shaped core. Between the protrusions of these core joints, a plurality of (two) core legs6formed of core blocks are arranged so as to have gaps and the protrusions. The ratio A/B, which is a ratio of the length A of the protrusions of the core joint to the average length B of the core blocks constituting the core legs in a magnetic path direction, is optimized so as to be not less than 0.3 but not more than 8.0, whereby an increase in copper loss due to leak magnetic fluxes of the gap portions is suppressed.
REFERENCES:
patent: 6657528 (2003-12-01), Tang
patent: 03-036708 (1991-02-01), None
patent: 03135007 (1991-06-01), None
patent: 05109548 (1993-04-01), None
patent: 2003-045724 (2003-02-01), None
patent: 2005-019764 (2005-01-01), None
patent: 2005-050918 (2005-02-01), None
patent: 2005137149 (2005-05-01), None
patent: 2005-310988 (2005-11-01), None
patent: 2005-347626 (2005-12-01), None
English translation of Nakamura [JP 2003-045724 A].
English translation of Hattori et al. [JP 2005-050918 A].
English translation of Saka [JP 2005-310988 A].
PCT Notification of Transmittal of Translation of the International Preliminary Report on Patentability, mailed Jul. 30, 2009, in International Application No. PCT/JP2008/050182 (7 pages).
PCT International Search Report mailed Apr. 22, 2008, in International Application No. PCT/JP2008/050182 (2 pages).
Abe Toru
Hamakake Hiroki
Kikuchi Keiko
Chan Tszfung
Finnegan Henderson Farabow Garrett & Dunner LLP
Hitachi Metals Ltd.
Mai Anh T
LandOfFree
Reactor core and reactor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Reactor core and reactor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reactor core and reactor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2717854