Plasma arc ignition system
US5208441A · kind A · utility
54Cited by
37References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 23, 1992 |
| Grant date | May 4, 1993 |
| Priority date | — |
| Expiry date | Jul 23, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05H1/3489
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In accordance with the present invention, a plasma arc torch contact starting system has a torch head having an electrically conductive plasma exit nozzle at one end and a pilot arc chamber within the torch head immediately adjacent the plasma exit nozzle. An electrode is mounted in the torch head for movement relative to the nozzle. An arc-drawing mechanism is operably connected to but substantially thermally isolated from the electrode and the torch head for biasing the electrode into contact with the nozzle and for displacing the electrode from the nozzle to draw a pilot arc in the pilot arc chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.