Patent ID: 7493790
Filing Date: 2009-02-24
Classification: B21D,Y10S

Abstract:
1. A method of making an easy-open end for a container, comprising steps of: (a) providing a can end having a peripheral edge and a panel, said panel having opposing first and second sides with said first side adapted to face toward the inside of a container when said end is affixed thereto; (b) forming first and second grooves in said panel spaced from said peripheral edge, said grooves extending below the level of said first side to form inner and outer beads; (c) forming a central bead in said panel between said first and second grooves, said central bead extending above the level of said second side; (d) forming a score along said central bead on said second side of said panel; (e) forcing said inner and outer beads toward each other and then toward said first side while forcing said central bead toward said second side, this step being performed in such a manner that said central bead elastically deforms in such a manner that said central bead will bend at said score.