Container end closure with improved chuck wall and countersink

a technology of end closure and countersink, which is applied in the field of container and container end closure, can solve the problems of not using the standard double seaming process, the 634 patent has not proved to be completely reliable in regard to leakage, and the description of the end closure of beverage containers, etc., so as to improve the strength of the end closure, reduce the size of blank materials, and save material costs

Inactive Publication Date: 2006-04-06
BALL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0010] In another aspect of the present invention, a beverage can end closure is provided with a countersink having an inner panel wall with a distinct non-linear, outwardly oriented radius of curvature of between about 0.025 inches and 0.080 inches. As referred to herein, the term “outwardly” refers to a direction oriented generally toward the container neck or sidewalls, while “inwardly” generally refers to a direction away from the container neck or sidewalls. Preferably, the curved portion of the inner panel wall is positioned just below the point of inter

Problems solved by technology

Unfortunately, the beverage container end closure described in the '634 patent has not proven to be completely reliable wi

Method used

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  • Container end closure with improved chuck wall and countersink
  • Container end closure with improved chuck wall and countersink
  • Container end closure with improved chuck wall and countersink

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Embodiment Construction

[0043] Referring now to the drawings, FIGS. 1-10 represent alternative embodiments of the present invention, and identifying various geometries which may be incorporated in a beverage can end closure 2 to achieve superior performance including buckle resistance. Each of the geometries shown in FIGS. 1-10 may be utilized independently, or alternatively combined in one or more combinations. FIGS. 11-13 represent prior at end closures 2, while FIGS. 14-19 depict cross-sectional front elevation views of alternative embodiments of the present invention. FIG. 20 shows a stacking arrangement of one end closure of the present invention and identifying the amount of “shuffle,” i.e. horizontal movement in a 2″ vertical stack of end closures. With regard to FIGS. 1-10, and the geometries provided herein, a detailed chart of these end closures is provided herein in the specification, wherein the specific geometry for each end closure is provided as well as specific performance data. Additionall...

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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.

Description

[0001] This application claims the benefit of U.S. Provisional Patent Application Ser. No. 60 / 613,988, filed Sep. 27, 2004, which is incorporated by reference in its entirety herein.FIELD OF THE INVENTION [0002] The present invention generally relates to containers and container end closures, and more specifically metallic beverage container end closures adapted for interconnection to a beverage can body. BACKGROUND OF THE INVENTION [0003] Containers and more specifically metallic beverage containers are typically manufactured by interconnecting a beverage can end closure on a beverage container body. In some applications, an end closure may be interconnected on both a top side and a bottom side of a can body. More frequently, however, a beverage can end closure is interconnected on a top end of a beverage can body which is drawn and ironed from a flat sheet of blank material such as aluminum. Due to the potentially high internal pressures generated by carbonated beverages, both the...

Claims

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Application Information

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IPC IPC(8): B65D6/28
CPCB65D7/04B65D7/36B65D17/08Y10S220/906
Inventor BULSO, JOSEPH D.
Owner BALL CORP
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