Gas cooled plasma torch
US5726415A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 16, 1996 |
| Grant date | Mar 10, 1998 |
| Priority date | — |
| Expiry date | Apr 16, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05H1/3478
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A plasma torch comprising an elongated electrically conductive nozzle with an internal, generally cylindrical chamber; an electrically conductive electrode with an elongated, cylindrical nose extending into the cylindrical chamber of the nozzle to define a relatively thin, elongated annular gas passage between the nozzle and the electrode nose, wherein the electrode includes a cylindrical portion above the nose, which portion has axially extending swirl grooves; and, a separate insulator sleeve engaging both the cylindrical portion and the nozzle for holding the electrode nose concentric with said cylindrical chamber of the nozzle. The nozzle includes means for venting a portion of said cooling gas from the relatively thin annular gas passage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.