Title:
METHOD FOR EXPANDING THE DIAMETER OF A METAL CONTAINER
Document Type and Number:
WIPO Patent Application WO/2013/096636
Kind Code:
A3
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.
Inventors:
FEDUSA ANTHONY J (US)
MYERS GARY L (US)
HUNKER GARY L (US)
DICK ROBERT E (US)
MYERS GARY L (US)
HUNKER GARY L (US)
DICK ROBERT E (US)
Application Number:
PCT/US2012/070979
Publication Date:
August 15, 2013
Filing Date:
December 20, 2012
Export Citation:
Assignee:
ALCOA INC (US)
International Classes:
B21D51/26
Foreign References:
| JPH03161129A | 1991-07-11 | |||
| DE3041001A1 | 1982-05-19 | |||
| US6442991B1 | 2002-09-03 | |||
| US4102168A | 1978-07-25 |
Attorney, Agent or Firm:
SANKUS, Mauri Aven et al. (LLPc/o Alcoa Technical Center,100 Technical Driv, Alcoa Center Pennsylvania, US)
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