Microwave oven

Details Microwave oven Microwave oven

1977-04-05

1978-08-15

Truhe, J. V.

Electric heating

Metal heating

Of cylinders

H05B 906

Patent

active

041075021

ABSTRACT:
A microwave oven equipped with a rotary table or turntable includes a heating chamber whose rear wall is formed into a concave shape of semi-circular cross section approximately concentric with a rotational center of the rotary table to eliminate any idle space at corner portions in the heating chamber for providing an economical microwave oven of compact size, and also to prevent the rotary table from being locked by a large object to be heated which may be caught by the corner portions during rotation, with the simultaneous elimination of damage to an observation window due to spark discharge arising from a metallic material included in the object, and with the further improvement of uniform heating within the heating chamber.

REFERENCES:
patent: 2520602 (1950-08-01), Linder
patent: 3440383 (1969-04-01), Smith
patent: 3467803 (1969-09-01), Ojelid
patent: 3492454 (1970-01-01), Smith
patent: 3566066 (1971-02-01), Borthwick et al.

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