Method of detecting food weight in microwave oven by processing

Details Method of detecting food weight in microwave oven by processing Method of detecting food weight in microwave oven by processing

1993-11-15

1996-10-15

Brown, Brian W.

Weighing scales

Combined

177 1, 177210C, 219708, 73 1B, G01G 1900, G01C 1738, H05B 650

Patent

active

055656552

ABSTRACT:
An apparatus for and a method of detecting a weight of a food in a microwave oven wherein a weight sensor is used which includes a pair of facing electrodes and an annular spacer interposed between the electrodes and is placed on a turning track of support rollers to be pressed by the support rollers so that the space between the electrodes can be varied when each of the support rollers presses the weight sensor, causing the weight sensor to linearly vary in capacitance and thus in frequency, thereby capable of accurately detecting the food weight by utilizing the frequency variation.

REFERENCES:
patent: 4051721 (1977-10-01), Williams
patent: 4629019 (1986-12-01), Harrington et al.
patent: 4683967 (1987-08-01), Hanatani et al.
patent: 4895067 (1990-01-01), Ohji et al.
patent: 4939333 (1990-07-01), Haruo et al.
patent: 5422464 (1995-06-01), Jeon

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