Patent ID: 7938290

Claim:
A container end closure adapted for interconnection to a container body, comprising: a circular end wall adapted for interconnection to a side wall of the container body; an upper chuck wall integrally interconnected to said circular end wall and having a portion that extends downwardly at an angle θ as measured from a vertical plane, said upper chuck wall further comprising an outwardly extending arch having a radius of curvature of between about 0.015 and 0.080 inches with a center point positioned above said circular end wall; a countersink interconnected to a lower chuck wall and having a radius of curvature of less than about 0.025 inches; a non-linear strengthening bead positioned between said upper chuck wall and said lower chuck wall having a length no greater than about 0.005 to 0.010 inches and an orientation which is distinct from said chuck wall; an inner panel wall interconnected to said countersink and extending upwardly at an angle φ of between about 0 degrees and 15 degrees as measured from a substantially vertical plane; and a central panel interconnected to an upper end of said inner panel wall and raised above a lowermost portion of said countersink.