Heating coil assembly for an electromagnetic induction cooking assembly
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United States of America Patent
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-
Aug 7, 1990
Issued Date -
N/A
app pub date -
Jan 29, 1988
filing date -
Dec 7, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a method of manufacturing a heating coil assembly for electromagnetic induction cooking heater in which a coil supporting base and a flat shaped coil winding frame are mounted on the spindle of a coil winding machine in such a manner as to form a coil receiving space therebetween, and a wire is wound in the space to form a coil, the coil supporting base and/or the coil winding frame has protrusions which extend in the space at the middle part, to vary the coil winding pitch, whereby the coil thus formed has a gap at the middle part, thus showing a uniform temperature distribution when energized.
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