Method for fixing the position of a pull-tab with a steep anti rotation device formed from the panel of a sheet metal cover
US7384227B2 · kind B2 · utility
2Cited by
18References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2003 |
| Grant date | Jun 10, 2008 |
| Priority date | — |
| Expiry date | Dec 23, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2517/0071
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The invention relates to a method for forming a sheet metal lid. At least one projection is formed twice. First, the projection is shaped from a panel of the sheet metal lid, the pre-form being located near an attaching portion of a tab, but at a distance from the mounting place. Second, at least a front edge of the pre-form of the at least one projection is re-formed. No score line is provided in the panel, neither during shaping, nor during re-forming. An improved blocking for an outer edge portion of the attaching portion is thus obtained, the outer edge portion being associated with the front edge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.