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:
Jul. 21, 1987
Filed:
Mar. 23, 1984
Leo Hartman, Beverwijk, NL;
Hoogovens Groep B.V., Ijmuiden, NL;
Abstract
In the manufacture of metal packaging cans metal sheet is deep-drawn and ironed to form a seamless tube having a bottom in one-piece therewith, and the tube is cut transversely to remove excess material at the end remote from the bottom. This forms a cylindrical body and bottom of a two-piece can. To minimize waste of material and to make possible the manufacture of a thin-walled three-piece can, the method includes cutting the deep-drawn and ironed tube transversely at at least one location intermediate the bottom and the end remote from the bottom so that, from the tube, there are formed a cylindrical body and bottom of a two-piece can and at least one cylindrical body of a three-piece can. Suitably, the tube is shaped by the deep-drawing and ironing so as to have a lesser wall-thickness at regions corresponding to the sidewalls of the cans and a greater wall-thickness at regions which correspond to the flange portions of the cans.