Abstract: A drawn aluminum can shell has a peripheral crown which is double-seamed with an end portion of an aluminum can body to provide a can end having a generally flat center panel connected by an inclined curved or straight panel wall to an inclined inner wall of an annular U-shaped countersink. The countersink has an outer wall which connects with an inclined lower wall portion of a chuck wall at a junction below the center panel, and the chuck wall has a curved or inclined upper wall portion which connects with an inner wall of the crown. The chuck wall also has an intermediate wall portion forming a break, and the inner bottom width of the countersink is less than the radial width of the panel wall. The inclined upper wall portion of the chuck wall extends at an angle greater than the angle of the inclined lower wall portion of the chuck wall.

Abstract: A metallic container end closure is provided that generally comprises a dispensing opening and a vent opening. The vent opening improves pourability through the dispensing opening and provides an alternative option for consuming the contents of the container. The end closure may include features to ease opening of the vent opening, such as stiffeners and/or vent form features. Additionally, the end closure may include various safety features, such as a safety fold. In some configurations, the container end closure does not include a pull tab for opening.