Control for and automatic washer with spray pretreatment
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United States of America Patent
Stats
-
Jul 1, 2003
Grant Date -
Dec 13, 2001
app pub date -
Jul 5, 2001
filing date -
Jun 22, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
This invention relates a control for an automatic washer incorporating a spray pretreatment or stain care cycle. In order to manage the occurrence of the condition of suds lock, the state of the washing machine related to the suds lock condition during spray pretreatment is determined by one or more of a number of methods. With this information concerning the state of the spray pretreatment process, the occurrence of suds lock can be ascertained and the cycle can be controlled accordingly to minimize negative effects resulting from a prolonged suds lock condition. Additionally, with certain information related to the occurrence of suds lock, steps can be taken during the spray pretreatment portion of the cycle to avoid the condition of suds lock altogether. Using the same primary process for measuring suds lock, load size can also be ascertained. Information about load size can be used to control the wash cycle.
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