Patent ID: 6220073
Filing Date: 2001-04-24
Classification: B21D,B65D

Abstract:
An apparatus for forming the bottom of a can, said can bottom having an annular nose formed therein, comprising:a) a centrally disposed die having a forming surface that is approximately dome-shaped and upwardly convex, said forming surface having a radius of curvature no greater than about 1.475 inches;b) a nose punch movable relative to said die, said nose punch having a distal end, said distal end formed by inner and outer circumferentially extending walls joined by a downwardly convex arcuate portion, said arcuate portion having a radius of curvature adjacent said inner wall that is within the range of 0.060 to 0.070 inches; andc) a ram for causing relative motion between said nose punch and said die.