Pipe fittings
US6406063B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 11, 2000 |
| Grant date | Jun 18, 2002 |
| Priority date | — |
| Expiry date | Jul 11, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C66/73921
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A pipe fitting for coupling together opposed ends of two plastics pipes by fusion welding, the pipe fitting comprising an annular body having an inner cylindrical surface of plastics material surrounding a cylindrical cavity for receiving opposed ends of two plastics pipes to be coupled together, an electrically conductive coil provided in said inner cylindrical surface and surrounding the cylindrical cavity, the coil having opposed ends, a pair of terminals each connected to a respective end of the coil and provided on the body for connection to a source of controlled electrical power, and an annular reinforcing member disposed in the body and surrounding the coil, the annular reinforcing member having a grooved surface which interfaces the annular body, the grooved surface defining a plurality of axially facing surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.