Microwave oven control with mechanical switch lock-out

Details Microwave oven control with mechanical switch lock-out Microwave oven control with mechanical switch lock-out

1975-11-13

1977-05-24

Schaefer, Robert K.

Electrical transmission or interconnection systems

Switching systems

Switch actuation

219 1055B, H01H 4300

Patent

active

040258041

ABSTRACT:
An electrical circuit provides continuous or intermittent energization of an electric apparatus, such as a magnetron that generates microwave energy for use in in a microwave oven or the like. When continuously energized the magnetron produces a maximum power output, for example, to cook a food load in the microwave oven; and when intermittently energized the magnetron produces a lower average microwave energy power level to cook food at a relatively slower rate and/or to defrost frozen food efficiently without cooking the outer surface thereof, as the brief off time during each complete cycle of the intermittently energized magnetron allows some temperature equilibration through the food product. The electrical circuit includes a cycling switch mechanism for such intermittent energization of the magnetron and a mechanical lock-out for biasing the switch mechanism to supply continuous energy to the magnetron.

REFERENCES:
patent: 3694608 (1972-09-01), Loubert et al.
patent: 3738178 (1973-06-01), Marquis et al.
patent: 3824365 (1974-07-01), Tapper
patent: 3842233 (1974-10-01), Lamb

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