Production Method for Molded Coil
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United States of America Patent
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Issued Date -
Oct 8, 2009
app pub date -
Apr 3, 2009
filing date -
Apr 4, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Disclosed is a method oft by using a plastic molding process, encapsulating an air-core coil with a moldable magnetic resin material prepared by kneading a mixture of a magnetic powder and a resin. The method comprises the steps of (a) preparing a molding die assembly which includes a plurality of dies adapted to define a cavity therewithin, and a positioning pin adapted to be movable in a vertical or horizontal direction within the cavity, (b) arranging the air-core coil at a given position within the cavity by the positioning pin, (c) charging the moldable magnetic resin material into the cavity and moving the positioning pin to a given retracted position in a course of the charging.
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