US Patent 7213423 Washing machine

A washing machine capable of minimizing tangle and damage of the laundry is disclosed. The washing machine includes: a wash shaft installed perpendicularly at a lower center of an inner tub, and rotated by a rotational force transferred from a motor; a wash plate orbiting about a rotational center of the wash shaft to form a stream of water; and a movement converting unit for converting a rotational movement of the wash shaft to a orbiting movement of the wash plate.