US Patent 7415849 Pulley of washing machine

A pulley of a washing machine, wherein the weight of the pulley is reduced by forming a strain-focused portion of the pulley with a high-rigidity material. The pulley of the washing machine having a motor for rotating a drum connected to one end of a shaft, includes a composite member, axially coupled to the other end of the shaft, for transferring a rotational force of the motor to the drum, the composite member being formed of at least two materials having dissimilar tensile strengths.