Patent ID: 7784323

Claim:
A method of making a convenience closure which is adapted for sealing an end of a can, comprising: providing an end panel; forming a rivet formation in said end panel; forming a peripheral score in said end panel; and forming a mustache score in said end panel, said mustache score including a central portion that is positioned radially inwardly on said end panel relative to said rivet formation and is curved with a concave side of curvature facing said rivet formation; a first end portion that is continuous with a first end of said central portion, wherein most of the total length of said first end portion is curved away from a nearest portion of said peripheral score, with a convex side of curvature facing said nearest portion of said peripheral score; and a second end portion that is continuous with a second end of said central portion, wherein most of the total length of said second end portion is curved away from a nearest portion of said peripheral score, with a convex side of curvature facing said nearest portion of said peripheral score.