US2012312066A1PendingUtilityA1

Method of Forming a Metal Container

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Assignee: MYERS GARY LPriority: Jun 10, 2011Filed: Jun 5, 2012Published: Dec 13, 2012
Est. expiryJun 10, 2031(~4.9 yrs left)· nominal 20-yr term from priority
Inventors:Gary L. MyersAnthony J. FedusaRobert E. DickGary L. Hunker
B21D 51/40B21D 51/16B21D 51/2638B21D 41/04
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Claims

Abstract

A method of forming a metal container comprises: narrowing a first top section of the container in at least one narrowing step, wherein after narrowing the first top section, the first top section has a first top section minimum outer diameter; and narrowing a second section of the metal container after narrowing the first top section, wherein after narrowing the second section, the second section has a second section minimum outer diameter; wherein the second section is below the first top section minimum outer diameter and wherein the second section minimum outer diameter is larger than the first top section minimum outer diameter. In some embodiments, the second section is below the first top section minimum outer diameter. In some embodiments, the second section of the metal container is necked with a necking die.

Claims

exact text as granted — not AI-modified
1 . A method of forming a metal container comprising:
 narrowing a first top section of the container in at least one narrowing step, wherein after narrowing the first top section, the first top section has a first top section minimum outer diameter; and   narrowing a second section of the metal container after narrowing the first top section, wherein after narrowing the second section, the second section has a second section minimum outer diameter;   wherein the second section is below the first top section minimum outer diameter;   wherein the second section minimum outer diameter is larger than the first top section minimum diameter.   
     
     
         2 . The method of  claim 1  wherein narrowing the second section of the metal container comprises necking with a necking die. 
     
     
         3 . The method of  claim 2  wherein necking is performed without the use of a knockout. 
     
     
         4 . The method of  claim 2  wherein a minimum inner diameter of a working surface of the necking die is greater than the first top section minimum outer diameter. 
     
     
         5 . The method of  claim 2  wherein the step of narrowing a second section of the metal container to a second section minimum outer diameter comprises passing the necking die beyond the first top section minimum outer diameter. 
     
     
         6 . The method of  claim 1  wherein the second section is narrowed at least 5% in a single stroke of a necking die. 
     
     
         7 . The method of  claim 1  wherein the second section is narrowed at least 10% in a single stroke of a necking die. 
     
     
         8 . The method of  claim 1  wherein the second section is narrowed at least 15% in a single stroke of a necking die. 
     
     
         9 . The method of  claim 1  wherein at least part of the second section is below the first top section. 
     
     
         10 . A method of forming a metal container comprising:
 narrowing a first top section of the container in at least one narrowing step, wherein after narrowing the first top section, the first top section has a first top section minimum circumference; and   narrowing a second section of the metal container after narrowing the first top section, wherein after narrowing the second section, the second section has a second section minimum circumference;   wherein the first top section minimum circumference does not change when narrowing the second section of the metal container and wherein the second section minimum circumference is larger than the first top section minimum circumference.   
     
     
         11 . The method of  claim 10  wherein the second section minimum circumference is below the first top section minimum circumference. 
     
     
         12 . The method of  claim 10  wherein the second section is completely encompassed within the first top section. 
     
     
         13 . The method of  claim 10  wherein at least part of the second section is below the first top section. 
     
     
         14 . The method of  claim 10  wherein narrowing the second section of the metal container comprises necking with a necking die. 
     
     
         15 . The method of  claim 14  wherein necking is performed without the use of a knockout. 
     
     
         16 . The method of  claim 14  wherein a minimum circumference of a working surface of the necking die is greater than the first top section minimum circumference. 
     
     
         17 . The method of  claim 14  wherein the step of narrowing a second section of the metal container to a second section minimum circumference comprises passing the necking die beyond the first top section minimum circumference. 
     
     
         18 . The method of  claim 10  wherein the second section is narrowed at least 5% in a single stroke of a necking die. 
     
     
         19 . The method of  claim 10  wherein the second section is narrowed at least 10% in a single stroke of a necking die. 
     
     
         20 . The method of  claim 10  wherein the second section is narrowed at least 15% in a single stroke of a necking die.

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