Textiles: fluid treating apparatus – Machines – Single tub and automatic sequential operation mechanism
Patent
1995-04-03
1996-11-26
Coe, Philip R.
Textiles: fluid treating apparatus
Machines
Single tub and automatic sequential operation mechanism
68 1214, 68207, 7386147, 134 57D, 137387, D06F 3302, A47L 1546
Patent
active
055773990
ABSTRACT:
A household appliance for washing articles with a cleansing liquid includes a cleansing chamber to receive the articles to be washed; a working fluid distribution system coupled to the cleansing chamber to transfer the cleansing liquid to and from the chamber; a pressure signature sensor disposed in the appliance so as to detect output pressure oscillation of a pump in the working fluid distribution system; and an appliance controller coupled to the working fluid distribution system and responsive to the pressure signature sensor so as to control operation of the pump in correspondence with a pressure oscillation signature generated by the pressure signature sensor. The pressure signature sensor includes a resistive elastomer that is disposed to form a diaphragm with electrodes attached on substantially opposite sides of the diaphragm and which is subject to discharge pressure of the pump. The resistive elastomer material typically comprises a material having a non-specific deflection-resistance relationship such that the signature sensor is a non-calibrated pressure sensor.
REFERENCES:
patent: 2408685 (1946-10-01), Rosenberger
patent: 2612908 (1952-10-01), Tate et al.
patent: 4555952 (1985-12-01), Jenkins
patent: 5313964 (1994-05-01), Dausch et al.
patent: 5408716 (1995-04-01), Dausch et al.
Dausch Mark E.
Whipple, III Walter
Coe Philip R.
General Electric Company
Ingraham Donald S.
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