Device for sensing food weight in a microwave oven

Details Device for sensing food weight in a microwave oven Device for sensing food weight in a microwave oven

1995-06-05

1998-01-27

Gellner, Michael L.

Weighing scales

Self-positioning

Electrical current generating or modifying

177210C, 217708, 217518, 217509, G01G 314, H05B 102, H05B 650

Patent

active

057124515

ABSTRACT:
A device for sensing food weight in a microwave oven includes a bracket formed into one body and mounted with a motor assembly having a motor axis, a movable electrode plate fixed to an extending piece separated from the bottom of the bracket and a printed circuit board in which a fixed electrode plate is printed. The printed circuit board is inserted in a space formed between the bottom of the bracket and the movable electrode plate. An initial food weight is set by varying an overlapping area of the movable electrode plate and the fixed electrode plate. The food weight is sensed by using the distance variation between the movable electrode plate and the fixed electrode plate. Since no weight is applied to the printed circuit board, the deformation and the destruction of the printed circuit board is prevented. Further, the distance between the fixed electrode plate and the movable electrode plate may be maintained constantly.

REFERENCES:
patent: 4214151 (1980-07-01), Kicherer et al.
patent: 4683967 (1987-08-01), Hanatani et al.
patent: 5302792 (1994-04-01), No et al.
patent: 5349138 (1994-09-01), Dong
patent: 5369254 (1994-11-01), Kwon
patent: 5422464 (1995-06-01), Jeon
patent: 5565655 (1996-10-01), Jeon

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