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US Patent 9700929 Method for expanding the diameter of a metal container

Patent 9700929 was granted and assigned to Alcoa on July, 2017 by the United States Patent and Trademark Office.

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Patent abstractTimelineTable: Further ResourcesReferences
Is a
Patent
Patent

Patent attributes

Patent Applicant
Alcoa
Alcoa
Current Assignee
Alcoa
Alcoa
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
9700929
Date of Patent
July 11, 2017
Patent Application Number
13722409
Date Filed
December 20, 2012
Patent Citations Received
‌
US Patent D1042036 Tapered cup
3
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US Patent D1000211 Thin metal cup
‌
US Patent D1012617 Tapered cup
4
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US Patent D1021538 Stackable, thin-metal cup
5
Patent Primary Examiner
‌
Peter Dungba Vo
Patent abstract

A method of forming a metal container comprises: curling outward a top edge of the metal container to form a curl and expanding a diameter of a first section of the metal container to form a first expanded section; wherein at least part of the first expanded section is below the curl. In some embodiments, the steps of curling outward a top edge of the metal container to form a curl and expanding a diameter of a first section of the metal container to form a first expanded section are performed in a single stroke of a single die. In some embodiments, the step of expanding a diameter of a first section of the metal container to form an expanded section is performed after the step of curling outward a top edge of the metal container to form a curl.

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