Patent ID: 7673491
Filing Date: 2010-03-09
Classification: B21D,Y10S

Abstract:
1. A method of testing a fill level of a sealed container having a metallic can end, comprising steps of: filling a container with a product; sealing said container with a can end, said can end comprising an end panel that has a generally curved major portion; and testing a fill level of said container, said step of testing being performed in reliance on the shape of said generally curved major portion; wherein said major portion of said end panel is curved so as to comprise a substantially constant radius of curvature within at least one cross-sectional plane taken therethrough; and wherein said major portion of said end panel is substantially circular in shape when viewed in top 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.