Patent ID: 6877941

Claim:
An apparatus for seaming a peripheral curl of a can end onto a flange of a can body, said can end having a wall extending radially inward from said peripheral curl and inclined between about 20° and about 60° with respect to a central axis of said can end, comprising: a) a chuck for locating within said can end, said chuck comprising upper and lower circumferentially extending walls forming a juncture therebetween, said lower wall inclined away from said upper wall so as to form a driving surface between said upper and lower walls, said driving surface subtending an angle of between about 120° and 150°, said upper wall being substantially cylindrical; and b) at least one seaming roll adapted to urge an upper portion of said inclined wall of said can end against said upper wall of said chuck so as to deform said peripheral curl and said flange into a seam joining said can end to said can body.