Microwave oven with stand-by mode

Details Microwave oven with stand-by mode Microwave oven with stand-by mode

1989-08-22

1992-02-18

Leung, Philip H.

Electric heating

Metal heating

Of cylinders

219 1055E, 219400, 126 21A, H05B 668

Patent

active

050896792

ABSTRACT:
A microwave oven has electrical resistance heating elements (38a, 38b), a fan (36) for passing air over the heating elements and through the oven cavity (10) and a magnetron for delivering microwave power to the oven cavity. The oven is intended for use in commercial establishments such as cafes, petrol filling stations or railway stations and is capable of occupying a stand-by mode pending insertion of a foot item into the oven cavity (10). During the stand-by mode the electrical resistance heating elements are energized at a lower power level (continuously or in pulses) in order to provide a reservoir of heat which speeds the cooking process. The oven is capable of occupying the stand-by mode continuously.

REFERENCES:
patent: 3253532 (1966-05-01), Jones
patent: 3514576 (1970-05-01), Hilton et al.
patent: 3569656 (1971-03-01), White et al.
patent: 3604896 (1971-09-01), Anderson et al.
patent: 3699307 (1972-10-01), Malkin
patent: 4227062 (1980-10-01), Payne et al.
patent: 4332992 (1982-06-01), Larsen et al.
patent: 4345134 (1982-08-01), Tanaka et al.
patent: 4687908 (1987-08-01), Thorne

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