Water level control system
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United States of America Patent
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May 20, 1980
Grant Date -
N/A
app pub date -
Oct 2, 1978
filing date -
Oct 2, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The solenoid operated water valve has a Venturi on its outlet which aspirates air through the pressure sensing side of a pressure switch until the water level in the washing machine reaches the end of the tube connected to the system through the selection valve. This prevents further aspiration and the Venturi rapidly lowers the pressure in the pressure switch to actuate the switch. The check valve prevents venting the pressure switch to atmosphere long enough for the associated timer to continue the machine program.
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