|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||B21D-022/21 B21D-022/00 B21D-051/00|
|미국특허분류(USC)||072/348; 072/356; 072/370.06; 413/069|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 2 인용 특허 : 65|
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 con...
1. An expansion die for manufacturing metal containers comprising: a work surface configured to expand a diameter of a metal container having a closed bottom, the work surface comprising a progressively expanding portion and a land portion; andan undercut portion;wherein the land portion is between the progressively expanding portion and the undercut portion and an outer diameter of the land portion is a maximum diameter of the die;wherein the land portion has a surface finish Ra ranging from about 8 μin. to about 32 μin. 2. The expansion die of claim 1,...