Whirlpool Corporation

Fisher & Paykel Limited

Bennett J Cook

Jenn-Yeu Nieh

Adam John Darby

Jason L Clemons

Manoel Francisco Soares Neto

James Andrew Oskins

Kathleen M La Belle

Laura C Oskins

An off-balance detection method comprises a plurality of off-balance detection schemes that utilize wash basket speed to detect an off-balance load condition at speed ranges that span the entire spin cycle and include speeds corresponding to natural frequencies of a mass comprising a wash tub and a wash basket. The schemes can be used alone or in combination with one or more of the other schemes. The off-balance detection method can further comprise a power limiting method to prevent motor overload when an off-balance condition is present.

Method of preventing motor overload in a washing machine

A method for determining the laundry load size according to one embodiment of the invention in an automatic clothes washer comprising supplying water to a reference water level to define a first amount of water, supplying water from the reference water level to a second water level above the reference water level and sufficient to submerge the laundry load to define a second amount of water, and determining a load size for the laundry load based on the second amount of water such that errors associated with the first amount of water are not considered in the load size determination based on the second amount of water.

Apparatus for determining load size in a washing machine

Method of detecting an off-balance condition of a clothes load in a washing machine

Method for determining load size in a washing machine

In a washing machine comprising a tub, an agitator, and a pressure sensor, a size of a fabric load may be determined and/or an operational water level may be set based on a time of supplying water to reach a timing water level in the tub and on variation in an output from the pressure sensor during agitation of the water and fabric load with the water at a agitation water level in the tub.

Method for determining load size and/or setting water level in a washing machine

In a washing machine comprising a tub, an agitator, and a pressure sensor, a size of a fabric load may be determined and/or an operational water level may be set based on an amount of water supplied to reach a first level in the tub and on variation in an output from the pressure sensor during agitation of the water and fabric load with the water at a second level in the tub.

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Watervliet, MI, United States of America

Bennett J Cook