Can with easy open end and protection against cuts

Details Can with easy open end and protection against cuts Can with easy open end and protection against cuts

1996-03-21

1998-10-20

Lavinder, Jack W.

Sheet metal container making

Method

Forming or treating metallic closure

413 13, 72348, 72350, B21D 5144

Patent

active

058237305

ABSTRACT:
A can of the type having a cylindrical body, has an easy open end seamed on it. The easy open end includes a center panel defined by a scored ring. The scored ring lies under an S-shaped bend formed around a perimeter of the center panel. A process for forming the easy open end includes the steps of: forming a semi-toroidal protuberance on the easy open end; coining a scored ring close to an external edge of the protuberance; and deforming the protuberance through a radial compression and a compression transverse to the radial compression to form the S-shaped bend with three thicknesses of material.

REFERENCES:
patent: 3705563 (1972-12-01), Elser
patent: 3857166 (1974-12-01), Gaillard
patent: 3868919 (1975-03-01), Schrecker
patent: 3939787 (1976-02-01), Morrison
patent: 3990376 (1976-11-01), Schubert
patent: 4386713 (1983-06-01), Baumeyer

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