Induction heating unit with combined tank circuit and heating co

Details Induction heating unit with combined tank circuit and heating co Induction heating unit with combined tank circuit and heating co

1975-02-07

1977-04-12

Reynolds, Bruce A.

Electric heating

Metal heating

Of cylinders

219 1053, 219 1077, 219 1079, 336 69, 336 82, 361270, H05B 508, H01F 1514

Patent

active

040177017

ABSTRACT:
Disclosed is an induction heating apparatus wherein the tank circuit and heater coil are combined in a single unit which is separated from the power supply. A coil forms both the inductance element of a tuned circuit and the primary winding of a current transformer. The inductance element is associated with a secondary winding formed by a metal sheet of material wrapped about the inductance element and can form both the capacitance of the tuned circuit and the secondary winding of the current transformer. A heat transfer unit is connected directly to the secondary winding formed by the single turn of sheet material and is used to provide inductive heating to a work surface to which thermally activated adhesives are to be secured. The induction heating unit is formed as a hand-held portable gun and includes the electronic circuitry in a rear body portion of the gun and the heat transfer unit forms a nosepiece for the gun so that precise local areas can be heated.

REFERENCES:
patent: 2343453 (1944-03-01), Gillespie
patent: 2515874 (1950-07-01), Hoyler et al.
patent: 2662162 (1953-12-01), Blok
patent: 2785265 (1957-03-01), Salisbury
patent: 3052281 (1962-09-01), Hilton
patent: 3210703 (1965-10-01), Lockie
patent: 3688232 (1972-08-01), Szatmari
patent: 3704390 (1972-11-01), Grahame
Markus, "Sourcebook of Electronic Circuits", p. 788, High-Current SCS Interval Timer, 1969.
Tudbury, "Basics of Induction Heating", 1960, Rider Publisher, vol. 2, pp. 63, 82.

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