Shallow can closure

Abstract

A can closure includes a body with a center panel and a peripheral curl. The can closure body has one of a reduced panel depth, a very reduced panel depth, an extremely reduced panel depth, or a beverage can reduced panel depth.

Description

CROSS REFERENCE TO RELATED APPLICATION[0001]This application claims priority to U.S. Patent Application 62 / 737,982, filed Sep. 28, 2018, which application is a continuation-in-part application of U.S. Provisional Application Ser. 62 / 616,735, filed Jan. 12, 2018, entitled SHALLOW CAN CLOSURE.BACKGROUNDField[0002]The disclosed and claimed concept relates to metal shells and / or can ends, and, more particularly, to shells and / or can ends that are a shallow can closure body.Background Information[0003]The following discussion uses beverage cans as an example. It is understood that that the disclosed and claimed concept is applicable to any size and / or type of can. Metallic containers (e.g., cans) are structured to hold products such as, but not limited to, food and beverages. Generally, a metallic container includes a can body and a can end. The can body, in an exemplary embodiment, includes a base and an upwardly depending sidewall. The can body defines a generally enclosed space that i...

AI Technical Summary

Benefits of technology

This patent describes a can closure design that addresses issues of buckle strength and panel area ratio. The design includes a shallow can closure body with a narrow trough that increases buckle strength and solves the problem of not having enough center panel area. Additionally, the design increases the ratio of the center panel area to the end diameter ratio, which further improves strength. As a result, the can closure is more durable and stable, and can safely contain the contents of the can.

Problems solved by technology

Accordingly, the use of a shell or can end that was formed from a blank with a standard volume is a problem and there is room for improvement over the known art.

The size of the tear panel, however, is limited by the size of the center panel.

That is, a can end 8 with a concentric rivet that rotates in a conversion press will maintain the rivet in a substantially central position whereas rotation of a can end with a non-concentric rivet will result in the rivet being in an undesirable position.

Thus, the unit depth of a can closure is a problem and there is room for improvement over the known art.

The angle of the panel wall 3A affects the seamed area ratio in a similar manner and is also a problem.

As such, a countersink (or trough) with a large radius is also problem.

Further, the existence of the pressure equalization chamber reduces the usable area of the can closure 20.

This is a problem because, as noted above, a limited center panel 2 limits the size of the tear panel 2D and opening through which the beverage is dispensed.

This is a problem and there is room for improvement.

This is a problem and there is room for improvement with respect to the volume of material sufficient to create the can body 14.

Further, it is known that can closures are prone to buckle when exposed to high pressures within the can.

Images