Textiles: fluid treating apparatus – Machines – Single tub and automatic sequential operation mechanism
Patent
1991-07-24
1993-12-28
Stinson, Frankie L.
Textiles: fluid treating apparatus
Machines
Single tub and automatic sequential operation mechanism
68 1222, D06F 3302
Patent
active
052728927
ABSTRACT:
A control system for a washing machine having a transducer mounted on the exterior of the washing receptacle wall and operable to generate acoustic vibrations in the receptacle wall during fluid filling of the receptacle. A receiver detects sound waves within the receptacle generated by the wall vibrations and generates in fill signal indicative of the sound waves. Circuitry is provided for analyzing the fill signal and determining from the acoustic signature of the fill signal the occurrence of total immersion of articles in the fluid; and, the circuitry sends a signal which is operable to then shut off the fluid fill valve.
REFERENCES:
patent: 4322031 (1982-03-01), Gehlert
patent: 4528709 (1985-07-01), Getz et al.
patent: 4643350 (1987-02-01), DeSchaaf et al.
Bernhard Richard G.
Jahn Ronald R.
Janutka William J.
Pardee John B.
Pick James M.
Eaton Corporation
Johnston R. A.
Stinson Frankie L.
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