Method for manufacturing tubes by welding
US8241447B2 · kind B2 · utility
2Cited by
2References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 4, 2009 |
| Grant date | Aug 14, 2012 |
| Priority date | — |
| Expiry date | Jul 13, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1038
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Method of welding a strip for the production of flexible tubular bodies made of plastic, comprising the following steps: shaping of a strip (1) around a welding rod; contacting of the ends (3, 4) of the strip; formation of a welded zone (5) by heating and compressing said ends (3, 4) and then by cooling them, said method being characterized in that the strip (1) is also heated outside the welded zone (5).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.