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US 2009/0020543 A1Published application
Container End Closure With Improved Chuck Wall and Countersink
AssigneeBall Corporation
InventorJoseph D. Bulso
Life of this patent
Estimating the term…
Abstract
The present invention describes a beverage can end which utilizes less material and has an improved internal buckle strength based on the geometric configuration of a chuck wall, inner panel wall and central panel, and which, in one embodiment utilizes an arcuate shaped chuck wall with a radius of curvature between about 0.150 inches and 0.250 inches with at least one transition zone positioned between an upper and lower end of the chuck wall.
Claims22
A container end closure adapted for interconnection to a container body, comprising:
- a circular end wall adapted for interconnection to a side wall of the container body;
- a chuck wall integrally interconnected to said circular end wall and extending downwardly at an angle θ as measured from a vertical plane, said chuck wall further comprising an outwardly extending arch having a radius of curvature of between about 0.015 and 0.080 inches with a center point positioned above said circular end wall;
- a countersink interconnected to a lower portion of said chuck wall and having a radius of curvature of less than about 0.025 inches;
- a non-linear transition zone positioned between a lower portion of said outwardly extending arch and said countersink having a length of at least about 0.0070 inches and an orientation which is distinct from said chuck wall;
- an inner panel wall interconnected to said countersink and extending upwardly at an angle φ of between about 0 degrees and 15 degrees as measured from a substantially vertical plane;
- and
- a central panel interconnected to an upper end of said inner panel wall and raised above a lowermost portion of said countersink.
4 more elements
A container end closure, comprising:
- a circular end wall adapted for interconnection to a neck of a container;
- a non-linear chuck wall integrally interconnected to a lower end of said circular end wall and extending downwardly, said chuck wall comprising an inwardly oriented arch having a radius of curvature of at least about 0.140 inches;
- a countersink interconnected to a lower portion of said chuck wall and a lower portion of an inner panel wall and having a radius of curvature less than about 0.015 inches;
- and
- a central panel interconnected to an upper end of said inner panel wall and raised above a lowermost portion of said countersink no greater than about 0.090 inches;
- and
- at least one transition zone positioned between an upper end and a lower end of said chuck wall and comprising a non-linear variation in the chuck wall geometry with a horizontal length and a vertical length no greater than about 0.010 inches.
4 more elements
A metallic container end closure adapted for interconnection to a container body, comprising:
- a circular end wall adapted for interconnection to a side wall of the container body;
- an outwardly extending upper chuck wall portion integrally interconnected to a lower end of said circular end wall and having a radius of curvature of at least about 0.015 inches;
- an inwardly extending lower chuck wall portion integrally interconnected to a lower end of said upper chuck wall and having a radius of curvature of at least about 0.100 inches;
- a countersink integrally interconnected to said lower chuck wall portion on a first end and a lower end of an inner panel wall on a second end, said inner panel wall extending upwardly at an angle φ1 of between about 0-4 degrees;
- and
- a central panel interconnected to an upper end of said inner panel wall, said central panel positioned above a lowermost portion of said countersink a distance no greater than about 0.090 inches.
3 more elements
An end closure adapted for interconnection to a container body, comprising:
- a circular end wall;
- an inwardly oriented arcuate chuck wall integrally interconnected to said circular end wall and extending downwardly therefrom;
- an outwardly projecting arch positioned proximate to an upper end of said chuck wall, and having a radius of curvature of between about 0.015-0.030 inches;
- and
- an annular countersink integrally interconnected to said lower end of said chuck wall on a first end and a central panel on a second end, said central panel having a central axis that is substantially parallel to the can body;
- and
- a transition zone positioned within said inwardly oriented arcuate chuck wall which has a geometry which is distinct from said inwardly oriented arcuate chuck wall.
4 more elements
Dependencies are inferred from the claim text.