Methods for manufacturing heating coil assembly

Details Methods for manufacturing heating coil assembly Methods for manufacturing heating coil assembly

1986-12-05

1988-09-13

Leung, Philip H.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

242 707, 242 711, 219 1079, 219 1067, 29605, 336207, 336232, H01B 1308, H05B 644

Patent

active

047703555

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.

REFERENCES:
patent: 3368174 (1968-02-01), Fischer
patent: 3372470 (1968-03-01), Bindari
patent: 3504474 (1970-04-01), Dykmans
patent: 3635411 (1972-01-01), Petrinjak et al.
patent: 3703601 (1972-11-01), Babel
patent: 3996442 (1976-12-01), Moreland, II et al.
patent: 4029926 (1977-06-01), Austin

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