Tapered container and method and apparatus for forming same
US4503702A · kind A · utility
31Cited by
13References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 5, 1983 |
| Grant date | Mar 12, 1985 |
| Priority date | — |
| Expiry date | May 5, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D22/26
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for forming nestable two-piece containers includes forming a cup from a metal blank; redrawing the cup thus formed to approximately one-half its final height while imparting a tapered sidewall thereto by use of a tapered die center; redrawing the container thus formed to its full height while continuing the taper by use of a second tapered die center while simultaneously profiling the bottom of the container thus drawn. The apparatus includes at least two redraw stations, each including a tapered redraw die center and corresponding die. The second of said stations also includes bottom profiling tooling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.