Electric heating – Microwave heating – With control system
Patent
1996-01-31
1998-03-17
Leung, Philip H.
Electric heating
Microwave heating
With control system
219715, 219719, 219685, 200 38FA, H05B 668
Patent
active
057289964
ABSTRACT:
Disclosed is an operational switch for a microwave oven using a pair of gears and a pair of micro switches in order for a magnetron and a heater of a microwave oven to operate. At the rear surface of a control panel, a first switch for turning on/off the magnetron and a first gear having a pair of pushing pieces for controlling the first switch are installed. At an edge of the first gear a second switch for controlling the heater is provided. A second gear for controlling the second switch is provided while meshing together with a power controlling gear of a timer body. A pair of pushing pieces are protrudingly formed on the surface of second gear. The first gear further includes a stopper and a pair of impeding pieces for limiting the rotation range and a pair of elastic pieces and a ring type guiding member for guiding the rotation. According to the invention, the productivity of a microwave oven can be improved because the number of components of a microwave oven is reduced, the bad quality components are avoided from being produced, and the assembling time of a microwave oven is shortened.
REFERENCES:
patent: 5134262 (1992-07-01), Lee
patent: 5455403 (1995-10-01), Kim et al.
patent: 5548104 (1996-08-01), Ko
patent: 5558796 (1996-09-01), Cho
Daewoo Electronics Co. Ltd.
Leung Philip H.
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