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:
Nov. 11, 1986
Filed:
Oct. 28, 1985
Applicant:
Inventor:
John F Bradford, Jr, Katy, TX (US);
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21D / ;
U.S. Cl.
CPC ...
72334 ; 72352 ;
Abstract
A process for making a rigid packaging container which contains a 'rolled lip' which comprises deforming a sheet of metal, plastic or paper composite material over a mold into a desired formed shape which contains a 'lip', advancing a trimming means from the convex or bottom side of the shape while said shape is supported so that said shape does not deform; and trimming the shape from the convex or bottom side of the shape at a point on the lip of the shape which undercuts the periphery of the shape while, at the same time, forcing open the undercut of the lip of the shape.