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US 12,071,280 B2Granted
Metallic end closure for small diameter container
AssigneeBall Corporation
InventorFlorian Andre-Guern
Life of this patent
Estimating the term…
Abstract
The present disclosure generally relates to containers and container end closures, and more specifically metallic end closures for small diameter metallic beverage containers. The present disclosure also relates to the tooling used to form the novel end closure, where the tooling is itself novel. The change of the angles on the die core ring improve the mobility of the metal while forming the end closure. Specifically, when manufacturing the new end closure with the new tooling, the press output is increased by over five times.
Claims9
A metallic end closure, comprising:
- a peripheral curl which is adapted for interconnection to a neck of a beverage container;
- a chuckwall extending downwardly from the peripheral curl, the chuckwall comprising:
- an upper portion that is inwardly oriented and interconnected to the peripheral curl at a first junction having a first radius of curvature when viewed in cross-section;
- and
- a curved portion that is inwardly oriented and interconnected to the upper portion at a second junction having a second radius of curvature of between about 0.03 inch and about 0.035 inch when viewed in cross-section, wherein the second radius of curvature of the second junction is measured from a side of the chuckwall facing a center of the metallic end closure, and wherein the curved portion has a third radius of curvature of between about 0.065 inch and about 0.075 inch when viewed in cross-section;
- a countersink, comprising:
- an outer panel wall having an upper end interconnected to a lower end of the curved portion of the chuckwall;
- a curved bottom portion having an outer portion and an interior portion, wherein the outer portion is interconnected to a lower end of the outer panel wall;
- and
- an inner panel wall extending upwardly from the interior portion of the countersink;
- a substantially linear panel wall interconnected to an upper portion of the inner panel wall;
- a center panel interconnected to an upper portion of the substantially linear panel wall;
- a pull tab having a nose end and a tail end which is operably interconnected to the center panel;
- a first score line in the center panel which defines a tear panel;
- and
- a maximum outer diameter measured between radially outermost portions of the peripheral curl of between 2.1 inches and 2.240 inches.
13 more elements
A method of manufacturing a metallic end closure, comprising:
- providing a metallic blank;
- and
- forming the metallic blank into an end closure comprising:
- a peripheral curl which is adapted for interconnection to a neck of a beverage container;
- a chuckwall extending downwardly from the peripheral curl, the chuckwall comprising:
- an upper portion that is inwardly oriented and interconnected to the peripheral curl at a first junction having a first radius of curvature when viewed in cross-section;
- and
- a curved portion that is inwardly oriented and interconnected to the upper portion at a second junction having a second radius of curvature of between about 0.03 inch and about 0.035 inch when viewed in cross-section, wherein the second radius of curvature of the second junction is measured from a side of the chuckwall facing a center of the metallic end closure, and wherein the curved portion has a third radius of curvature of between about 0.065 inch and about 0.075 inch when viewed in cross-section;
- a countersink, comprising:
- an outer panel wall having an upper end interconnected to a lower end of the curved portion of the chuckwall;
- a curved bottom portion having an outer portion and an interior portion, wherein the outer portion is interconnected to a lower end of the outer panel wall;
- and
- an inner panel wall extending upwardly from the interior portion of the countersink;
- a center panel interconnected to an upper portion of the inner panel wall;
- a pull tab having a nose end and a tail end which is operably interconnected to the center panel;
- a first score line in the center panel which defines a tear panel;
- and
- a maximum outer diameter measured between radially outermost portions of the peripheral curl of between 2.1 inches and 2.240 inches.
15 more elements
A metallic beverage container, comprising:
- a container body comprising a closed bottom end, an open upper end, and a cylindrical sidewall;
- a neck interconnected to the open upper end of the container body;
- and
- an end closure interconnected to the neck by a seam, the end closure comprising:
- a chuckwall extending downwardly from the seam, the chuckwall comprising:
- an upper portion that is inwardly oriented and interconnected to the seam at a first junction having a first radius of curvature when viewed in cross-section;
- and
- a curved portion that is inwardly oriented and interconnected to the upper portion at a second junction having a second radius of curvature of between about 0.03 inch and about 0.035 inch when viewed in cross-section, wherein the second radius of curvature of the second junction is measured from a side of the chuckwall facing a center of the end closure, and wherein the curved portion has a third radius of curvature of between about 0.065 inch and about 0.075 inch when viewed in cross-section;
- a countersink, comprising:
- an outer panel wall having an upper end interconnected to a lower end of the curved portion of the chuckwall;
- a curved bottom portion having an outer portion and an interior portion, wherein the outer portion is interconnected to a lower end of the outer panel wall;
- and
- an inner panel wall extending upwardly from the interior portion of the countersink;
- a substantially linear panel wall interconnected to an upper portion of the inner panel wall;
- a center panel interconnected to an upper portion of the substantially linear panel wall;
- a pull tab having a nose end and a tail end which is operably interconnected to the center panel;
- and
- a first score line in the center panel which defines a tear panel.
15 more elements
Dependencies are inferred from the claim text.