Can end with retort resistant panel, and tooling and associated method for providing same
AssigneeStolle Machinery Company, LLC
InventorDennis C. Stammen
Life of this patent
Estimating the term…
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 scoreline 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.
Claims6
Tooling for making a can end structured to be affixed to a can, the can end 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 a 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,
- wherein the first tool of the first tool assembly comprises a first planar portion, a second planar portion spaced from the first planar portion, and a recess extending inwardly from the first planar portion and the second planar portion,
- wherein the second tool of the first tool assembly comprises a protrusion, and
- wherein the protrusion of the second tool is structured to extend into the recess of the first tool to form the pressure resistance bead.
Dependencies are inferred from the claim text.