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:
Jun. 02, 1981
Filed:
Jul. 19, 1979
Wade D Fletcher, Hartsville, SC (US);
Edward H McMahon, Hartsville, SC (US);
Dwight D Grady, Hartsville, SC (US);
Sonoco Products Company, Hartsville, SC (US);
Abstract
A system of seaming a metallic end cover to a tubular composite can body utilizing a cover the diametric size of which is smaller than that of the can body. The smaller cover provides an annular space between the central depending cover pin and the surrounding portion of the body wall at the end thereof. The peripheral flange of the cover is inwardly folded about and with the flanged end of the can body to define a double seam. Simultaneously with the formation of the double seam, the seaming rolls, through direct engagement with the can body at and immediately below the seam, inwardly shape and contour the end portion of the can body, bringing the formed seam into the annular space and into direct engagement with the cover pin, necking the can body and providing a flush-sided container.