Can end
US7591392B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 1, 2004 |
| Grant date | Sep 22, 2009 |
| Priority date | — |
| Expiry date | May 29, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S220/906
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A can end having a countersink bead, an inclined chuck wall and a strong seam, resists distortion from its circular profile when subjected to thermal processing or when packaging carbonated beverages. This high hoop strength affects the manner in which the can end ultimately fails when placed under extreme abuse conditions, even if buckle pressure performance is within industry specified standards. The can end of the invention has control features introduced which control the failure mode while maintaining specified buckle pressure performance. In one embodiment, the can end has a two part wall and a control feature that comprises expansion of the countersink bead to act as a trigger for local peaking, together with a groove in the chuck wall which prevents the peaking force from being concentrated at a single point which could result in leaking by the production of a pin hole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.