Electric heating – Metal heating – Of cylinders
Patent
1974-09-25
1976-10-19
Reynolds, Bruce A.
Electric heating
Metal heating
Of cylinders
219 1077, 219 1079, 200613, 200 17R, 200153V, H05B 504
Patent
active
039872688
ABSTRACT:
A first hollow control shaft is rotatable within a housing between actuating and restoring positions with intermediate ON-OFF positions therebetween. A first insulating actuator is rotatable within the housing to operate at least a pair of normally open contacts. A second insulating actuator is slidable along a predetermined path and normally biased to operate normally closed contacts and engageable with the first actuator by a lost motion connection which permits the second actuator to move in a limited range with respect to the rotational movement of the control shaft. The normally closed contacts are placed in a trigger circuit of an induction heating apparatus and the normally open contacts placed in a power supply circuit of the apparatus, the former being operated to disable the trigger circuit prior to energization or de-energization of the power supply circuit. A second control shaft is journaled through the first control shaft. A pinion gear is mounted on the second shaft. A rack is slidable within the housing and engages the pinion. An elevating mechanism is provided on which an induction heating coil of the induction heating apparatus is placed to adjustably heat a utensil located adjacent the coil. A connecting wire couples the rack and the elevating mechanism to effect raising and lowering of the coil to a desired position by rotation of the second shaft.
REFERENCES:
patent: 2506653 (1950-05-01), Soneng et al.
patent: 3186252 (1965-06-01), Olandt
patent: 3407278 (1968-10-01), Stoi
patent: 3419684 (1968-12-01), Lord et al.
patent: 3543589 (1970-12-01), Loughrey
patent: 3710062 (1973-01-01), Peters
patent: 3781503 (1973-12-01), Haanden et al.
patent: 3821509 (1974-06-01), Amogami et al.
patent: 3898410 (1975-08-01), Peters
Ithuzi Akira
Maeda Shigeru
Adams Bruce L.
Burns Robert E.
Kyokuto Electric Company, Limited
Lobato Emmanuel J.
Matsushita Electric - Industrial Co., Ltd.
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