Protective device for induction heating apparatus

Details Protective device for induction heating apparatus Protective device for induction heating apparatus

1976-08-30

1978-06-13

Reynolds, Bruce A.

Electric heating

Metal heating

Of cylinders

219 1077, H05B 504

Patent

active

040950760

ABSTRACT:
A protective device for induction heating apparatus is disclosed. The device includes an excitor supplied with operating voltage for induction-heating a heating element and a detecting device for detecting the state of the heating element. Means are provided for stopping the operating voltage to the excitor when the detecting device detects an abnormal state of the heating element and for applying the operating voltage to the excitor after a predetermined delay when an abnormal state of the heating element is not detected.

REFERENCES:
patent: 3532850 (1970-10-01), Schulz et al.
patent: 3604882 (1971-09-01), Seyfried
patent: 3770928 (1973-11-01), Kornrumf et al.
patent: 3821509 (1974-06-01), Amagami et al.
patent: 3823297 (1974-07-01), Cunningham
patent: 3973105 (1976-08-01), Tsumori
patent: 4015084 (1977-03-01), Tsumori et al.

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