The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 22, 1997
Filed:
Jun. 05, 1995
Applicant:
Inventor:
Joseph D Bulso, Jr, Canton, OH (US);
Assignee:
Redicon Corporation, Canton, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21D / ;
U.S. Cl.
CPC ...
72 68 ; 72105 ; 723794 ;
Abstract
A method of forming a drawn and redrawn and ironed container having a contoured sidewall. A cup is blanked and formed from stock in conventional fashion. A profiled bottom may be formed in the cup during the redraw step. The cup is ironed using at least one ironing ring and an ironing punch having at least one recessed area for shaping the interior sidewall of the cup. When the cup is ironed, areas of extra material are formed on the interior of the sidewall where the recessed areas of the ironing punch were present. These areas of extra material are shaped during a spin forming step that creates the contoured sidewall of the can.