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US 5,497,900 AGranted
Necked container body
AssigneeAmerican National Can Company
InventorsAntonio Caleffi, T. William Ames, Edward S. Traczyk, Dietrich K. Naggert
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AssigneeAmerican National Can Company
InventorsAntonio Caleffi, T. William Ames, Edward S. Traczyk, Dietrich K. Naggert
Estimating the term…
A die necking method and apparatus for producing a smooth tapered wall between the container side wall and a reduced diameter neck includes a plurality of rotatable necking turrets that each have a plurality of identical necking substations each having a necking die. The necking dies in the respective turrets have an internal configuration to produce a necked-in portion on the container which has a first arcuate segment integral with the container side wall and a second arcuate segment integral with the reduced diameter neck. The necking substations also have a floating form control element that engages the inner surface of the container to control the portion of the container to be necked. The necked-in portion is reformed in each succeeding turret by dies to produce a smooth tapered wall between the arcuate segments.
A cylindrical can body for a two-piece metal container comprising a cylindrical side wall extending from an integral bottom end wall, a single smooth necked in portion at an end of said cylindrical side wall having a single inwardly tapered annular straight segment extending from a single shoulder between said side wall and a reduced diameter neck portion at an open end of said can body, said inwardly tapered annular straight segment comprising a first radially compressed tapered portion having a single compressed lower segment, and a second further radially compressed tapered portion extending from an upper part of said first tapered portion, said second tapered portion disposed between said first tapered portion and said reduced diameter neck.
Dependencies are inferred from the claim text.