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Patent Searching and Data


Title:
WASHING MACHINE AND CONTROLLING METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2012/091380
Kind Code:
A3
Abstract:
Provided is a washing machine (W). The washing machine (W) includes an outer tub (12) holding wash water, an inner tub (14) rotatably provided in the outer tub (12) and receiving laundry, a pulsator (16) rotatably provided in the inner tub (14), a power transmission shaft (33) rotating the pulsator (16), a buoyancy clutch (40) that that moves up and down by buoyancy created by the wash water and transfers, when the buoyancy clutch (40) is in a lower position, rotational force from the power transmission shaft (33) to the inner tub (14) to allow the pulsator (16) and the inner tub (14) to rotate integrally with each other, a circulation passage (18) that is provided on an outer portion of the outer tub (12) to allow the wash water drained out of the outer tub (12) to be returned into the outer tub (12), a pump (26) provided on the circulation passage (18) and a drain guide unit that directs the wash water under the buoyancy clutch (40) to a drain hole (12h) of the outer tub (12) so that the buoyancy clutch (40) moves downward.

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Inventors:
CHANG JAE WON (KR)
LEE KYU BUM (KR)
KIM YOUNG JONG (KR)
CHAE AE KYUNG (KR)
Application Number:
PCT/KR2011/010085
Publication Date:
June 13, 2013
Filing Date:
December 26, 2011
Export Citation:
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Assignee:
LG ELECTRONICS INC (KR)
CHANG JAE WON (KR)
LEE KYU BUM (KR)
KIM YOUNG JONG (KR)
CHAE AE KYUNG (KR)
International Classes:
D06F37/40; D06F21/06; D06F23/04
Foreign References:
US20070130999A12007-06-14
GB2287960A1995-10-04
US5651277A1997-07-29
Attorney, Agent or Firm:
PARK, Byung Chang (Yeoksam-dong Kangnam-gu, Seoul 135-080, KR)
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