Patent ID: 8746019

Claim:
A washing machine, comprising: a cabinet; a tub installed in the cabinet to receive wash water, the tub including an overflow defined through a portion of one side of the tub to drain wash water to prevent the wash water from overflowing the tub, the overflow being formed at a topmost circumference of the tub in a shape of a rectangular cutout; and a pair of guide ribs protruding from an outer circumference of the tub to guide the wash water drained through the overflow, wherein the guide ribs extend longitudinally in a downward direction from an upper end of the tub to a lower end of the tub, and upper ends of the guide ribs are positioned at a height that is substantially same as a height of the topmost circumference of the tub and lower ends of the guide ribs extend to a height that is substantially same as a height of a lowermost circumference of the tub such that the wash water being drained through the overflow is prevented from leaking outside of the guide ribs through the upper ends of the guide ribs.