Electric arc generating device having three electrodes
US5227603A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | May 7, 1991 |
| Grant date | Jul 13, 1993 |
| Priority date | — |
| Expiry date | May 7, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05H1/3452
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An electric arc generating device including, a first electrode and at least two further electrodes. A source of electrical power is connected to said electrodes so as to cause an arc to burn between the first electrode and one of the further electrodes. The distribution of power within the zone of the arc is controlled by repetitively changing the path of the arc. That is, one root of the arc may remain attached to the first electrode, whereas attachment of the other root is transferred between two or more of the further electrodes on a repetitive basis. The timing and extent of each change may vary according to circumstances of use. The changes in arc path are due at least in part to repetitive modification of the influence of the power source on one or more of the further electrodes, but variation of the flow rate of gas/material through the arc zone can be another controlling factor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.