Patent ID: 8756957

Claim:
A washing machine comprising a tub formed by injection molding with a bearing housing inserted in the tub, wherein the bearing housing comprises: a bearing support that receives one or more bearings therein; a flange that extends outward from the bearing support, the flange including a protruded part and a recessed part, wherein the flange is formed as a single body with the bearing support and is configured to be coupled to a stator of a motor, and wherein the protruded part and the recessed part are concentrically arranged with respect to the bearing support, and are alternately arranged in a radial direction; a plurality of radial ribs positioned in a concave area defined by an underside of the protruded part, wherein the plurality of radial ribs extend radially therein and are arranged circumferentially therein; and a circumferential rib positioned in the concave area defined by the underside of the protruded part so as to connect the plurality of radial ribs.