Container for making ice cubes

Claim 1

Apparatus for making ice cubes comprising a generally prismatic one-piece self-supporting container of hollow configuration, the container having a base wall, front and back walls, opposite side walls, and a top wall, the front and back walls being wider than the side walls, the front wall being formed with rows of outwardly directed ice-forming cavities, each cavity having the shape of a truncated pyramid to allow an ice cube to be released therefrom by external pressure, inter-cavity walls with channels therein providing liquid flow communication between the cavities, a combination filling and emptying aperture in the top wall dimensioned to allow ice cubes released from the respective cavities to be discharged therethrough, a fill marking on one of the front, back and side walls to indicate a fill level for the ice-forming cavities when the container is oriented with said aperture facing upwards, and mutually perpendicular external stacking ribs on the back wall enabling a plurality of said containers to be stacked selectively in parallel and in mutually perpendicular relation, the apparatus further including a closure member for said aperture, the stacking ribs including an elongate spine extending substantially the entire length of the back wall and lateral ribs spaced along and extending outwardly from opposite sides of said spine.