Welding torch with a torch housing and drive for welding rod transport
US9144857B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2013 |
| Grant date | Sep 29, 2015 |
| Priority date | — |
| Expiry date | May 20, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K7/14
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A welding torch includes a torch housing and, preferably, a tube bend fastenable thereto. A drive unit for feeding a welding wire is arranged in the torch housing and is formed by at least a drive roller and a pressure roller, as well as a drive motor. Part of the torch housing is designed as a component of the drive unit. A rotor, in particular a motor shaft, of the drive motor is fastened to the torch housing via a bearing or bearings to stabilize and position the rotor. A welding wire feed drive motor includes bearings, a rotor, in particular a motor shaft and a rotor winding or rotor magnets, and a stator pack, in particular stator winding or stator magnets. At least a part of the motor shaft, in particular the retention zone of a drive roller, is electrically insulated from the stator housing or base body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.