Microwave oven having a keyboard of the membrane type

Details Microwave oven having a keyboard of the membrane type Microwave oven having a keyboard of the membrane type

1985-09-30

1986-11-04

Leung, Philip H.

Electric heating

Metal heating

Of cylinders

340365A, 340365R, 200 5A, H05B 668, G06F 302

Patent

active

046211780

ABSTRACT:
There is disclosed an electrical signal input device suitable for use in a microwave oven or other household appliance for introducing a setting into those appliances through a simple one-touch actuation. The input device is of the membrane type which includes an actuator member composed of a generally flat plate having a plurality of elongated actuator sections on a surface thereof and carrying a plurality of first electrodes disposed wholly through an opposite surface thereof and facing against the plurality of the actuator sections, a substrate disposed in conjunction with the actuator member and having a plurality of second electrodes each corresponding to one of the first electrodes. The first and second electrodes are brought into electrical contact when the corresponding one of the actuator sections is depressed and becomes bent. It is sensed as to where the first and second electrodes are in electric contact along the length of the actuator sections.

REFERENCES:
patent: 3732389 (1973-05-01), Kaelin et al.
patent: 3908100 (1975-09-01), Richard et al.
patent: 3935485 (1976-01-01), Yoshida et al.
patent: 4158115 (1979-06-01), Parkinson et al.
patent: 4304976 (1981-12-01), Gottbreht et al.
patent: 4304991 (1981-12-01), Weber
patent: 4360716 (1982-11-01), Fiorella
patent: 4412209 (1983-10-01), Frame et al.

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