Patent ID: 7380684
Filing Date: 2008-06-03
Classification: B21D,B65D

Abstract:
1. A lid for a can body comprising: a center panel having a central axis that is perpendicular to the center panel; countersink that extends radially from the periphery of the center panel; a first arcuate member that extends radially from the periphery of the countersink, the arcuate member having first and second ends and a radius of curvature of less than about 0.5 inches, the center point of the radius of curvature of the first arcuate member being below the surface of the lid, and wherein a line passing through the first and second ends is at a first angle between about 20° to about 80° with respect to the central axis; a step portion extending radially outward from the second end of the first arcuate member, the step portion having a radius of curvature of from about 0.020 inches to about 0.060 inches, and the center point of the radius of curvature of the step portion being above the surface of the lid; a frustoconical member that extends radially from the step portion and that is inclined at a second angle with respect to said central axis between about 4° and about 12°; a second arcuate member that extends from the periphery of the frustoconical member, the second arcuate member having a radius of curvature of about 0.020 inches with a center point below the surface of the lid; and a peripheral curl that extends from the periphery of the second arcuate member.