Apparatus for manufacturing can lid
US6524048B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 2000 |
| Grant date | Feb 25, 2003 |
| Priority date | — |
| Expiry date | May 16, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D51/383
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A can lid of the fully-open type has a disk-shaped panel, a score notched endlessly in a surface of the panel along an outer circumferential edge of the panel, for forming an opening in the panel, and a tab fixed to the panel by a rivet. The tab is attached in a direction substantially perpendicular to an initial tear-off line of the score. The surface of the panel which is concealed from view by the tab is printed with a circular mark representing a rolling direction in which the material of the panel has been rolled. The score is defined such that the rolling direction extends substantially at a right angle to the initial tear-off line of the score. The panel has an auxiliary score defined in the surface thereof near the rivet and positioned across the rivet from the initial tear-off line substantially parallel to the initial tear-off line and separate therefrom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.