End closure with coined panel radius and reform step
AssigneeStolle Machinery Company, LLC
InventorsMARK RICHARD MITCHELL, Aaron Emmanuel Carstens, Craig Allen McEldowney
Life of this patent
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Abstract
A method of forming a can end shell is provided which includes providing a can end shell having a central panel portion, a first panel radius around the central panel portion, a chamfer extending from the first panel radius, and a second panel radius around the chamfer, coining the can end shell to form a coined section in the first panel radius around at least a portion of the circumference of the central panel portion, and reforming the can end shell to form a step in the chamfer.
Claims20
A method of forming can end shell, the method comprising:
- providing a can end shell having a central panel portion, a first panel radius around the central panel portion, a chamfer extending from the first panel radius, and a second panel radius around the chamfer;
- coining the can end shell to form a coined section in the first panel radius around at east a portion of the circumference of the central panel portion;
- and
- reforming the can end shell to form a step in the chamfer.
A tool assembly to reform a can end shell having a central panel portion, a first panel radius around the central panel portion, a chamfer extending from the first panel radius, and a second panel radius around the chamfer, the tooling assembly comprising:
- a coining tool assembly including:
- a coining tool having an angled section structured to for a coined section in the first panel radius around at least a portion of the circumference of the central panel portion during a coining operation;
- and
- a reforming tool assembly including:
- a reforming tool having a reforming section structured to forma step in the chamfer during a reforming operation.
A can end shell comprising:
- a central panel portion;
- a first panel radius around the central panel portion;
- a chamfer extending from the first panel radius;
- a second panel radius around the chamfer;
- a coined section formed in the first panel radius around at least a portion of the circumference of the central panel portion;
- and
- a step formed in the chamfer.
Dependencies are inferred from the claim text.