US 2014/0193223 A1 · CAN END WITH RETORT RESISTANT PANEL, AND TOOLING AND ASSOCIATED METHOD FOR PROVIDING SAME

Abstract

A method of making a can end, which includes a recessed panel defined by an upwardly extending chuck wall, a peripheral scoreline disposed in a public side of the panel proximate to the base of the chuck wall, a tab fastened to the panel by a rivet, includes the step of employing tooling to form a pressure resistance bead extends around the panel inboard of the peripheral scoretine and outboard of the rivet. The tooling forms a saw tooth panel formation proximate to the pressure resistance bead inboard of the pressure resistance bead. Among other benefits, the pressure resistance bead and saw tooth panel formation created by the tooling and method combine to resist wrinkling or other undesired deformation of the can end.

Claims11

Dependent claims

Tooling for making a can end structured to be affixed toucan, the can et d including a recessed panel defined by an upwardly extending chuck wall, and a rivet disposed on the panel proximate to the chuck wall, the tooling comprising:

a first tool assembly including a first tool and a second tool disposed opposite the first tool and being structured to cooperate with the first tool to form an pressure resistance bead in the panel inboard of the chuck wall and outboard of the rivet;
and
a second tool assembly including a first tool and a second tool disposed opposite the first tool and being structured to cooperate with the first tool to form a saw tooth panel formation proximate to the pressure resistance bead.

The tooling of claim it wherein the first tool of the second tool assembly comprises a forming member including a projection, a first planar portion disposed on one side of the projection, and a second planar portion disposed on the opposite side of the projection;

wherein the second tool of the second tool assembly comprises a first member including an offset protrusion;
and wherein the projection of the first tool is structured to move toward the first member of the second tool as the offset protrusion of the first member of the second tool moves toward the second planar portion of the first tool, thereby making a plurality of bends in the panel to form the saw tooth panel formation.

Dependencies are inferred from the claim text.

Facts

Application

14/176,337Filed 10 Feb 2014

Priority

18 Oct 2010

Published

10 Jul 2014

Term ends

Not estimatedThe source records don’t support an estimate.

Classification11 codes

B21D 51/38
Characterised by the use of the objects: making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends;…
B21D 37/10
Tools as parts of machines covered by this subclass: die sets; Pillar guides
B65D 17/06
Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions:…
B65D 17/08
Integral, or permanently secured, end or side closures: closures secured by folding or rolling and pressing

Can end with retort resistant panel, and tooling and associated method for providing same

Life of this patent

Can end with retort resistant panel, and tooling and associated method for providing same

Life of this patent

Abstract

Claims11