Electric heating – Metal heating – Of cylinders
Patent
1976-05-21
1977-09-13
Reynolds, Bruce A.
Electric heating
Metal heating
Of cylinders
156275, 219 95, 219 1053, 336172, H05B 508
Patent
active
040484580
ABSTRACT:
An induction heating coil and core structure which provides two distinct magnetic circuits, with the materials to be heated also forming a part of the circuits so that juxtaposed workpieces can be joined together with a layer of heat activatable adhesive by a unitary core structure. A pair of nested U-shaped cores have a differing number of exciter coil turns with at least one common turn wrapped about each of the members to produce a greater amount of flux density in one core than the other to effect a different heat rate between the workpieces which complete each magnetic circuit.
REFERENCES:
patent: 1849485 (1932-03-01), Gibbs et al.
patent: 2116119 (1938-05-01), Loewenstein
patent: 2706234 (1955-04-01), Macy
patent: 2902572 (1959-09-01), Lackner et al.
patent: 3260976 (1966-07-01), Eissmann
patent: 3472992 (1969-10-01), Geisel et al.
patent: 3883712 (1975-05-01), McBriarty
Beart Robert W.
Buckman Thomas W.
Illinois Tool Works Inc.
Reynolds Bruce A.
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