Patent ID: 7657903

Claim:
A disc cartridge comprising: a lower housing having a window for allowing a recorder or reader to access to a read-out surface of a disc; an upper housing coupled to the lower housing to ejectably receive the disc between the lower housing and the upper housing, and having at least a portion rotatable up and down with respect to one side of the lower housing until the disc can be ejected; and a locking assembly mounted on the lower housing and the upper housing, the locking assembly including at least one pair of projection and groove, wherein the projection is maintained and fixed into the groove by snap fitting the projection into the groove and is substantially surrounded by the groove when the upper housing is coupled with the lower housing, wherein, when the upper housing is coupled with the lower housing, the projection is protruded vertically and the groove is recessed vertically with respect to a surface of the disc cartridge on which the disc is placed, wherein the upper housing and the lower housing are integrally formed as one piece, wherein the upper housing has an opening to expose a portion of a surface of the disc, and the opening has a size that prevents an ejection of the disc through the opening, and wherein the portion of the surface of the disc is a portion of a label surface of the disc.