Process and means for welding corrugated tubes and/or compound tubes and weld connection produced thereby
US5772824A · kind A · utility
2Cited by
9References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 28, 1995 |
| Grant date | Jun 30, 1998 |
| Priority date | — |
| Expiry date | Nov 28, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S285/903
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
In a process for the connecting of plastic tubes the wall of which has a corrugated cross section by electro-thermal welding, filling cores of plastic are inserted in the corrugation troughs of the tubes to be connected on both sides of a welding joint in order to form a resting surface on the outer circumference of the tubes and an electric heating mat which surrounds the resting surface of all filling cores is placed on the resting surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.