Expanding die and method of shaping containers
AssigneeAlcoa Inc.
InventorsGary L. Myers, Anthony Fedusa, Robert E. Dick
Life of this patent
Estimating the term…
Abstract
The present invention provides an expansion die for manufacturing containers including a work surface including a progressively expanding portion and a land portion; and an undercut portion positioned following the land portion of the work surface. The present invention further provides a process for manufacturing shaped containers including providing a container stock having a first diameter; expanding at least a portion of the container stock to a second diameter with at least one expansion die; and forming an end of the container stock to accept a container lid.
Claims20
A process for manufacturing a shaped container comprising:
- providing a container stock having a first diameter;
- expanding at least a portion of the container stock to a second diameter with at least one expansion die;
- and
- forming an end of the container stock to accept a container lid.
An expansion die for manufacturing metal containers comprising:
- a work surface comprising a progressively expanding portion and a land portion;
- and
- an undercut portion positioned following the land portion of the work surface.
A die system comprising:
- a first expansion die having a work surface configured to increase a container stock diameter and to determine a profile at a transition from an original container stock diameter to an expanded portion of the container stock, and
- at least one progressive expansion die, wherein each successive die of the at least one progressive expansion die has a working surface configured to provide an equal, less than or increasing degree of expansion in the container stock diameter from the first expansion die.
Dependencies are inferred from the claim text.