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US 10,850,888 B2Granted
Concave can end
AssigneeCrown Packaging Technology, Inc.
InventorsChristopher Paul Ramsey, Ben Mattin, Tim Clark
Life of this patent
Estimating the term…
Abstract
A container can end includes a concave dome shape and may forgo a peripheral reinforcing bead around the center panel. The tab may also be curved. Tooling for forming the end and a corresponding method are provided.
Claims72
An unseamed can end capable of withstanding 90 psi internal pressure after seaming onto a can body, the can end being formed of an aluminum alloy, the can end comprising:
- a curl structure adapted for being seamed together with a flange of a can body;
- a chuck wall extending radially inwardly from the curl structure, the chuck wall is adapted for contact with a chuck during the seaming process;
- an inwardly domed panel radially inwardly from the chuck wall, wherein a slope of every tangent of every curve defined by the can end at every point of the chuck wall and the domed panel is non-zero except at a center of the panel;
- a score formed on the panel;
- and
- a tab attached to the panel and adapted for rupturing the score in response to actuation of the tab by a user to form a pour opening.
3 more elements
An unseamed can end and can body combination comprising:
- a drawn and ironed can body including a base, a sidewall, and a flange;
- and
- an unseamed can end including:
- a curl structure engaged with the flange;
- a chuck wall extending radially inwardly from the curl structure, the chuck wall is adapted for contact with a chuck during the seaming process;
- an inwardly domed panel radially inwardly from the chuck wall, wherein a slope of every tangent of every curve defined by the can end at every point of the chuck wall and the domed panel is non-zero except at a center of the panel;
- a score formed on the panel;
- and
- a tab attached to the panel and adapted for rupturing the score in response to actuation of the tab by a user to form a pour opening.
6 more elements
A container for holding a comestible product, the container comprising:
- a drawn and ironed can body including a base, a sidewall, and a neck;
- a can end including:
- a chuck wall extending radially inwardly from a curl structure, the chuck wall is adapted for contact with a chuck during the seaming process;
- an inwardly domed panel radially inwardly from the chuck wall, wherein the domed panel in cross section is formed by multiple radii that decrease with radial position from the panel center to a curved portion inboard and proximate the chuck wall;
- a score formed on the panel;
- and
- a tab attached to the panel and adapted for rupturing the score in response to actuation of the tab by a user to form a pour opening;
- and
- a terminal portion of the can body and a terminal portion of the can end being joined together by a double seam having a seam height that is less than approximately 2.2 mm.
6 more elements
A container for holding a comestible product, the container comprising:
- a can body;
- a can end including:
- a chuck wall extending radially inwardly from a curl structure, the chuck wall is adapted for contact with a chuck during the seaming process;
- an inwardly domed panel radially inwardly from the chuck wall, wherein the domed panel in cross section is formed by multiple radii that decrease with radial position from the panel center to a curved portion inboard and proximate the chuck wall;
- a terminal portion of the can body and a terminal portion of the end being joined together by a double seam having a seam height that is less than approximately 2.2 mm.
2 more elements
Dependencies are inferred from the claim text.