Method and device for the butt-welding of pipes made of thermoplastic material
US9358743B2 · kind B2 · utility
0Cited by
6References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 1, 2011 |
| Grant date | Jun 7, 2016 |
| Priority date | — |
| Expiry date | Oct 17, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2023/22
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method and a device for welding plastic pipes (1) made of thermoplastic material by a butt-welding method, wherein the pipes (1) are held in a coaxial position in relation to one another by clamping points (2), are trimmed by a trimmer (3), which can be brought between the clamping points (2), and are heated up by heated tools (6), which can be fitted in place of the trimmer (3), wherein the heating of the free pipe ends (8) to be welded has the effect of forming a melting region which forms a bead when pressing occurs, the pipe projection (5) of the pipes (1) being trimmed to a defined size.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.