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US 5,987,935 AGranted
Washing machine
AssigneeAktiebolget Electrolux
InventorGoran Uhlin
Life of this patent
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AssigneeAktiebolget Electrolux
InventorGoran Uhlin
Estimating the term…
A laundry washing machine comprises a tub (11) rotatably housing a wash drum (12) supporting laundry items, water supply means (13) for the supply of water to the tub (11), level sensing means (15, 16, 17) for sensing the liquid level in the tub (11) and liquid draining means (20, 32, 33) for draining off wash and rinse liquid from the tub (11) said liquid draining means including a bottom valve (20) with a valve housing (21) and a movable valve member (27) adapted to sealingly bear against an annular edge (26) in the valve housing (21). The level sensing means comprises a chamber (17) annularly surrounding said annular edge (26). The upper part of said chamber is adapted to communicated with a pressure sensor (15) and the lower part of said chamber is adapted to communicate with the interior of the tub via at least one channel (42) having a small cross section. An elastic, annular sealing means (39) is provided which is adapted to close the annular chamber (17), by means of the movable valve member (27), when the bottom valve (20) is closed.
Laundry washing machine with a tub (11) rotatably housing a wash drum (12) supporting laundry items, water supply means (13) for supplying water to the tub (11), level sensing means (15,16,17) for sensing liquid level in the tub (11), and liquid draining means (20,32,33) for draining off wash and rinse liquid from the tub (11), said liquid draining means including a bottom valve (20) with a valve housing (21) and a movable valve member (27) adapted to sealingly bear against an annular edge (26) in the valve housing (21), wherein the level sensing means comprises a chamber (17) annularly surrounding said annular edge (26), an upper part of said chamber being adapted to communicate with a pressure sensor (15) and a lower part of said chamber being adapted to communicate with an interior of the tub via at least one channel (42) having a small cross-section, an elastic, annular sealing means (39) being provided which is adapted to close the annular chamber (17), by means of the movable valve member (27), when the bottom valve (20) is closed.
Dependencies are inferred from the claim text.