Method for forming tall tapered containers
US4914937A · kind A · utility
21Cited by
13References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 15, 1988 |
| Grant date | Apr 10, 1990 |
| Priority date | — |
| Expiry date | Jun 15, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D22/26
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of forming a tapered container in which the container is first redrawn to a partial length having first and second straight sidewall portions interconnected by a transition portion and then redrawn to substantially its final length and tapered condition by drawing material from the transition portion. The method also optionally includes an overlength second redraw and a bottom profiling step utilizing the overdrawn portion to form the profile.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.