Patent ID: 7552612
Filing Date: 2009-06-30
Classification: B21D

Abstract:
1. A tooling assembly for forming an end panel of an easy open can end, comprising: a first forming tool for forming a top surface of a easy open can end, said first forming tool having a first working surface that includes a curved generally convex major portion that extends over at least about 75% of said first working surface; and a second forming tool that is constructed and arranged to work together with said first forming tool to form said end panel, said second forming tool having a second working surface that includes a curved generally concave major portion that extends over at least about 75% of said second working surface; and a press assembly for driving at least one of said first and second forming tools; wherein said curved generally concave major portion of said second forming tool is curved at a substantially constant radius of curvature within at least one cross-sectional plane taken therethrough; wherein said major portion of said second forming tool is substantially circular in shape when veiwed in plan, and wherein a ratio of said substantially constant radius of curvature to a diameter of said major portion is within a range of about 0.05 to about 0.4.