Process and connection component using an electrical resistor for the welding of plastic elements
US5182440A · kind A · utility
30Cited by
3References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 27, 1990 |
| Grant date | Jan 26, 1993 |
| Priority date | — |
| Expiry date | Nov 27, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2793/009
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to the welding of components made of heat-fusing plastic, using an electrical heating resistor arranged in the thickness of a connection component. According to the invention, the resistor is a thin electrically conductive layer advantageously formed on a supporting film made of heat-fusing plastic and capable of causing the tearing of the layer at a specific temperature corresponding to the welding temperature of the components. The invention is used particularly for the thermal welding of polyethylene pipes used in the gas industry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.