Patent ID: 7380422

Claim:
A drum type washing machine, comprising: a tub provided in a cabinet and configured to receive washing fluid; a drum rotatably installed in the tub, wherein the drum includes an opening that faces a front of the cabinet so as to receive laundry items therethrough; at least one ceramic piece; and at least one corresponding ceramic receiver provided on an inner surface of the drum and extending along an axial direction of the drum, wherein each ceramic receiver is configured to receive the at least one ceramic piece therein, and wherein each ceramic receiver comprises: a housing having a first, open side configured to receive the at least one ceramic piece therein, and a second, circumferential side including a plurality of openings formed therein, wherein a peripheral edge of the first, open side of the housing is configured to be coupled to the inner surface of the drum, and wherein the housing so coupled to the drum is configured to lift laundry items in the drum as the drum rotates; and a cover positioned between the first, open side of the housing and the inner surface of the drum, wherein the cover comprises a first side configured to extend across the first, open side of the housing, and a second side comprising a plurality of ribs that extend outward from the second side of the cover wherein distal ends of the plurality of ribs are configured to contact the inner surface of the drum so as to maintain a position of the cover relative to the first, open side of the housing.