Process for producing a safe opening container lid

Details Process for producing a safe opening container lid Process for producing a safe opening container lid

1992-01-10

1992-12-29

Kisliuk, Bruce M.

Sheet metal container making

Method

Forming or treating metallic closure

72348, 72349, 413 14, B21D 5144

Patent

active

051747065

ABSTRACT:
A safe opening container lid having a bead side plate portion and a removable plate portion. The bead side plate portion has a first loop portion formed at the outer side of a tear line defining a removable plate portion, the loop portion being bent upwardly from the portion where the tear line is formed, the return portion of the loop portion that returns toward the tear line being spaced apart from the tear line forming portion, and the return portion being further bent outwardly at a position inward of the tear line. The removable plate portion has a second loop portion formed at the inner side of the tear line, the second loop portion being bent downwardly from the portion where the tear line is formed, the return portion of the second loop portion that returns toward the tear line being spaced apart from the tear line forming portion, and the return portion being further bent inwardly at a position outward of the tear line. A tear tab is fixed to the removable plate portion such that the tip of the tab is disposed at or near the tear line. Also disclosed is a process for producing this safe opening container lid.

REFERENCES:
patent: 3939787 (1976-02-01), Morrison
patent: 3945334 (1976-03-01), Ostrem
patent: 4052949 (1977-10-01), Woodley
patent: 4804106 (1989-02-01), Saunders

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