Flanging process improvement for reducing variation in can body flange width
US7201031B2 · kind B2 · utility
9Cited by
24References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 7, 2005 |
| Grant date | Apr 10, 2007 |
| Priority date | — |
| Expiry date | Feb 7, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D51/2615
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A flange forming process uses first and second stages. The first stage produces a partially formed flange on an article. The second stage forces the partially formed flange into a die so a stepped surface of a knockout punch that is disposed in the die, produces a predetermined can height such as the FFCH (Factory Finished Can Height) while the retaining die limits the outside diameter of the flange.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.