Patent ID: 8733137

Claim:
A washing machine comprising: an outer tub holding wash water; an inner tub rotatably provided in the outer tub; and a pulsator rotatably provided in the inner tub, the pulsator comprising: a base comprising a hub formed at a center thereof; and a plurality of ribs protruding from the base, each rib comprising: an upper surface extending outwardly along a radial direction to meet an outer circumference of the base; and a side surface declining from the upper surface to the base, the side surface comprising: a first side surface having a boundary with the base, the boundary radially diverging outward in a circumference direction, the boundary meeting an inner circumference of the base; and a second side surface extending from the first side surface to meet the outer circumference of the base and the upper surface, wherein the first side surface is formed integrally with the second side surface to form a continuously curved surface, and wherein the first and second side surfaces progressively broaden in an outward radial direction.