Method and apparatus for doming can bottoms
US4723433A · kind A · utility
14Cited by
7References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 28, 1986 |
| Grant date | Feb 9, 1988 |
| Priority date | — |
| Expiry date | Jan 28, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D22/30
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A doming assembly for doming the bottom wall of a can body. A bodymaker punch urges a can bottom wall first against a forming ring and then against a domer die. The forming ring forms an outer annular portion of a dome and the domer die forms a central portion of a dome in the can bottom wall. The sequential engagement of the can bottom wall by first the forming ring, then the domer die prevents flower dome formation and axial can body shortening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.