Device for controlling the operation of an appliance with a serv

Details Device for controlling the operation of an appliance with a serv Device for controlling the operation of an appliance with a serv

1993-04-12

1996-01-02

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

134 57D, G05B 1101

Patent

active

054811694

ABSTRACT:
A device for controlling the operation of a household electrical appliance such as a washing machine, dish-washer, cooking hob, oven or the like including an electronic circuit arranged to control the operation of the electrical appliance in accordance with predetermined program steps selected via a selector. This selector is a knob connected to a position sensing element associated with the electronic circuit and arranged to generate an electrical signal (V.sub.A) on the basis of the angular position of the knob relative to an initial position or zero point. The electrical signal (V.sub.A) is used by the electronic circuit in known manner to execute a predetermine wash program or the like or to control the operation of the electrical appliance. The electronic circuit further controls an actuator for moving the knob, so that the knob is made to move during the execution of the selected operating program and hence display the progress of the program.

REFERENCES:
patent: 4218898 (1980-08-01), Boyen et al.
patent: 4763493 (1988-08-01), Nishite et al.
patent: 5034671 (1991-07-01), Patton et al.
patent: 5079489 (1992-01-01), Ishii
patent: 5150489 (1992-09-01), Kaji et al.
patent: 5211037 (1993-05-01), Adamski et al.

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