Inductor devices – Plural part core
Reexamination Certificate
2009-09-14
2011-10-11
Mai, Anh (Department: 2832)
Inductor devices
Plural part core
C336S216000
Reexamination Certificate
active
08035472
ABSTRACT:
The invention relates to swinging inductors of a stepped-gap construction. We describe an inductor core structure having first and second core segments, constructed and arranged such that distal ends of legs of the first core segment are paired with distal ends of legs of the second core segment in an opposing relation. The at least one distal ends of the first core segment has a ridge projecting therefrom and is paired with the at least one distal ends of the second core segment which has a ridge projecting therefrom in an opposing relation, such that opposingly paired projecting ridges form a cross arrangement.
REFERENCES:
patent: 3587020 (1971-06-01), Waasner
patent: 3603864 (1971-09-01), Thaler et al.
patent: 3659191 (1972-04-01), Spreadbury
patent: 3942069 (1976-03-01), Kaneda
patent: 4138636 (1979-02-01), Liberman
patent: 4594295 (1986-06-01), Waasner et al.
patent: 4602236 (1986-07-01), Shelby et al.
patent: 4728918 (1988-03-01), Neusser et al.
patent: 5155676 (1992-10-01), Spreen
patent: 5440225 (1995-08-01), Kojima
patent: 5469053 (1995-11-01), Laughlin
patent: 5506560 (1996-04-01), Takeuchi et al.
patent: 5816894 (1998-10-01), Hosozawa et al.
patent: 5847518 (1998-12-01), Ishiwaki
patent: 5861792 (1999-01-01), Ueda et al.
patent: 6232864 (2001-05-01), Hosozawa et al.
patent: 6281776 (2001-08-01), Davidson
patent: 6657528 (2003-12-01), Tang
patent: 6717504 (2004-04-01), Fujiwara et al.
patent: 6753751 (2004-06-01), Fujiwara et al.
patent: 6856231 (2005-02-01), Fujiwara et al.
patent: 6958673 (2005-10-01), Suzuki
patent: 2003/0048644 (2003-03-01), Nagai et al.
patent: 0518421 (1992-12-01), None
patent: 0577334 (1994-01-01), None
“Great Britain Application Serial No. GB0816921.1, Search Report dated Nov. 5, 2008”, 2 pgs.
“Step-gap “E” core swing chokes”,Magnetics, Inc. Technical Bulletin—Bulletin FC-S4, (2001), 4 pgs.
Lee, S. T. S., et al., “Use of Saturable Inductor to Improve the Dimming Characteristics of Frequency-Controlled Dimmable Electronic Ballasts”,IEEE Transactions on Power Electronics, 19(6), (2004), 1653-1660.
Baisa Joselito
Cambridge Semiconductor Limited
Mai Anh
Schwegman Lundberg & Woessner, P.A.
LandOfFree
Crossed gap ferrite cores does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Crossed gap ferrite cores, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Crossed gap ferrite cores will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4256474