Necked-in aerosol containers
AssigneeThe Continental Group, Inc.
InventorArnold R. Boik
Life of this patent
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Abstract
An apparatus and method for forming integral domed can bodies for aerosol cans. The apparatus is in the form of plural sets of tools, each set of tools including an inside tool and an outside tool so related as progressively to reduce the diameter of an end portion of the tubular body and in doing so gradually increasing the axial extent of an intermediate frustoconical portion. Each frustoconical intermediate portion is increased in extent axially by seating the previously formed portion on the inside tool and then shaping the blank on that same surface, whereby there is no interruption or stepping of the formed frustoconical intermediate portion of the blank.
Claims9
An apparatus for progressively necking-in an end portion of a tubular member, said apparatus comprising a plurality of inside tools each having a base portion of a first diameter, a free end portion of a second and lesser diameter, and a frustoconical intermediate portion, the first diameters of said inside tools being identical, the second diameters of said inside tools progressively decreasing, and said frustoconical intermediate portions progressively axially increasing in length, and an outside tool cooperable with each inside tool.
Dependencies are inferred from the claim text.