Drum type core with discrete structure

Details Drum type core with discrete structure Drum type core with discrete structure

2005-08-09

2005-08-09

Donovan, Lincoln (Department: 2832)

Inductor devices

With mounting or supporting means

C336S096000, C336S192000, C336S198000, C439S078000

Reexamination Certificate

active

06927658

ABSTRACT:
A drum type core comprises: a flanged cylinder including a cylinder portion with a coil wound thereon, and a flange portion connected integrally with one end of the cylinder portion; and a flange piece having on its one side an engaging hole, into which the other end of the cylinder portion of the flanged cylinder is inserted. The flanged cylinder and the flange piece are made of respective different materials. The flanged cylinder has a higher permeability and saturation flux density than the flange piece, while the flange piece has a higher surface electrical resistance than the flanged cylinder. The flanged cylinder is entirely coated with a heat-resisting epoxy resin except an outer side of the flange portion. The flange piece is provided with terminal pins, around which lead wires of the coil passing by the circumference of the flange piece are bound.

REFERENCES:
patent: 4498067 (1985-02-01), Kumokawa et al.
patent: 5673013 (1997-09-01), Moody et al.
patent: 6336818 (2002-01-01), Bayer

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