Method and apparatus for forming a steel pressure container, such steel pressure container and a preform therefor
US8844334B2 · kind B2 · utility
3Cited by
10References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 16, 2007 |
| Grant date | Sep 30, 2014 |
| Priority date | — |
| Expiry date | May 11, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12292
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The invention relates to a method for forming a steel container having a curled open end, comprising the steps of i) providing a steel cup; ii) deep drawing the steel cup into a drawn container preform; iii) thin drawing the body of the drawn container preform; and iv) curling an open end of the drawn container preform by forming a precurl and by curling the precurl into an elongated curl, to an apparatus for forming a steel container, and to such steel container and its preform.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.