Automatic water level control system for an automatic washer

Details Automatic water level control system for an automatic washer Automatic water level control system for an automatic washer

1987-12-24

1989-06-06

Coe, Philip R.

Textiles: fluid treating apparatus

Machines

Single tub and automatic sequential operation mechanism

68207, D06F 3302, D06F 3908

Patent

active

048359912

ABSTRACT:
An automatic water level control is provided which utilizes a single pneumatic pressure sensor for detecting minimum water level, maximum water level and tub motion during agitation. Relative tub movement change during agitation and filling is used to determine an optimum water level for washing. A horizontal portion of the sensor fills with water during the tub filling process and provides the arrangement for detecting tub motion. A microprocessor stores and compares successive peak pressure signals to determine relative changes in tub motion amplitude.

REFERENCES:
patent: 3030790 (1962-04-01), Davenport et al.
patent: 3065618 (1962-11-01), Cobb et al.
patent: 3093841 (1963-06-01), Cobb et al.
patent: 3316569 (1967-05-01), Brenner et al.
patent: 3497884 (1970-03-01), Tichy et al.
patent: 3498090 (1970-03-01), Mason
patent: 4503575 (1985-03-01), Knoop et al.
patent: 4697293 (1987-10-01), Knoop

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