Safety interlock system for microwave ovens

Details Safety interlock system for microwave ovens Safety interlock system for microwave ovens

1974-08-22

1976-05-18

Envall, Jr., R. N.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

317 9A, 317 40A, 317135R, 317136, 307 94, 219 1055C, H02H 504

Patent

active

RE0288225

ABSTRACT:
A safety interlock system is disclosed for microwave ovens or other high voltage electrical apparatus incorporating sensor means for detecting any malfunction. Means are provided for interrupting line input power or actuating a failure indicating device or a combination of both. Thermally actuated means, such as bimetallic or meltable elements, as well as circuit breakers, relays and fuses are described. The sensor means are associated with each of the interlocks and do not carry regular equipment-load current until such time as a malfunction of the companion interlock occurs. Replacement of the faulty equipment by authorized personnel and manual resetting of the interrupt or indicating means before the oven is energized again reduce the risk of accidental radiation, electrical shock or damage to the apparatus.

REFERENCES:
patent: 2718630 (1955-09-01), Wait
patent: 2855235 (1958-10-01), Dellen
patent: 3624334 (1971-11-01), Chapell
patent: 3699299 (1972-10-01), Umezo et al.
patent: 3715552 (1973-02-01), Umezo et al.
patent: 3715554 (1973-02-01), Umezo et al.
patent: 3857067 (1974-12-01), Zanboorie

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