Plasma torch having a bypass unit
US5925267A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 23, 1997 |
| Grant date | Jul 20, 1999 |
| Priority date | — |
| Expiry date | Dec 23, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05H1/3478
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
There is disclosed a plasma torch for performing a working operation with respect to a workpiece (8) by flushing out of a torch nozzle (2), a plasma arc drawn from an electrode (1) together with a working gas that is introduced from a periphery of the electrode while holding a portion of the plasma torch substantially in contact with the workpiece, in which at least that portion of said plasma torch which may make a contact with the workpiece is composed of a non-insulating member and in which a high frequency current bypassing unit (12) is disposed between a site of the plasma torch that is equal in electric potential to the torch nozzle and a site of the plasma torch that is equal in electric potential to the workpiece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.