Patent ID: 7556168

Claim:
An easy open can end member comprising: a center panel positioned about a longitudinal axis perpendicular to a diameter of the center panel, the center panel including a closure member for sealing the end member, a portion of the closure member is retainable to a portion of the center panel once the easy open can end member is opened; a curl defining an outer perimeter of the end member; a circumferential chuck wall extending downwardly from the curl; and a transition wall connecting the chuck wall with a peripheral edge of the center panel, the transition wall comprising a folded portion, the folded portion having a first leg, a second leg, and a third leg, the first leg connected to the chuck wall and joined to the second leg by a concave annular potion, the second leg joined to the third leg by a convex annular portion, and the third leg joined to the center panel, the convex annular portion having a radius of curvature greater than 0.002 ins.