Noncontact coupler

Details Noncontact coupler Noncontact coupler

2007-05-15

2007-05-15

Nguyen, Tuyen T. (Department: 2832)

Inductor devices

Core forms casing

C336S178000

Reexamination Certificate

active

10467871

ABSTRACT:
A noncontact coupler comprising a pair of magnetic cores1, 1each having a U-shaped open magnetic path, a primary coil L1and secondary coil L2being wound around said cores1, 1separately respectively, said coupler transmitting AC electric power between said primary and secondary coils L1, L2by means of an annular closed magnetic path B formed by opposing in proximity both open magnetic face sides of said cores, wherein said primary and secondary magnetic cores1, 1are respectively split at least at their sides facing to each other, and a gap forming a spatial magnetic path is interposed between said split pieces. A diameter a of a medium leg51positioned inside an annular groove52around in which the coils L1, L2are wound (housed) is set almost equal to a width b of the annular groove52. These provide effects of lightening a noncontact coupler while securing its performance and improving handleability with enhancing tolerance for positioning of the primary and secondary cores.

REFERENCES:
patent: 3205485 (1965-09-01), Noltingk
patent: 2002/0033748 (2002-03-01), Bolotinsky et al.
patent: 4 115 867 (1992-11-01), None
patent: 02-031405 (1990-02-01), None
patent: 2000-150273 (2000-05-01), None
International Search Report for PCT/JP02/01257; date of mailing May 28, 2002; ISA/JPO.

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