Patent ID: 8739579

Claim:
A laundry apparatus comprising: a drum receiving laundry therein, the drum comprising a plurality of lifters extending inward, the lifters lifting and dropping the laundry during a rotation of the drum; a circular housing provided in an outer surface of the drum, the circular housing comprising motion space formed therein; at least two partition members spaced apart a predetermined distance along a direction of circumference of the motion space of the housing, the at least two partition members alternating with the plurality of the lifters in a semi-circumferential direction, respectively, and partitioning the motion space into at least two spaces; and at least two ball members movable inside the each of the partitioned spaces of the motion space, wherein each partition member is spaced apart a predetermined distance from both an inner surface and an outer surface of the circular housing so that the viscous fluid is able to pass the partition members and the ball members are unable to pass the partition members, the motion space of the housing is between the inner and outer surfaces of the circular housing, wherein each partition member is positioned at center between each two lifters in a semi-circumferential direction.