Fluid handling – Liquid level responsive or maintaining systems – Washing machine cycle control
Patent
1976-05-06
1978-10-10
Schwadron, Martin P.
Fluid handling
Liquid level responsive or maintaining systems
Washing machine cycle control
68207, 134 57D, 137389, F16K 2118
Patent
active
041191161
ABSTRACT:
A receptacle such as a dishwasher tub having an improved control for effecting filling of the tub to a preselected full level and protecting the apparatus against undesirable overfill in the event the normal flow control malfunctions. The flow control includes a control valve having two valve elements for cooperatively preventing such undesirable overfill. One of the valve elements may be controlled by an electrically operated solenoid, and the other valve element may be controlled by mechanical control structure. In the illustrated embodiment, the electrically controlled valve element is controlled by a timer, and the mechanically controlled valve element is controlled by a float.
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Johnson Philip P.
Lampman William T.
Schwadron Martin P.
Walton G. L.
Whirlpool Corporation
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