Plasma torch with extended life electrodes
US5004888A · kind A · utility
10Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 21, 1989 |
| Grant date | Apr 2, 1991 |
| Priority date | — |
| Expiry date | Dec 21, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05H1/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A plasma torch electrode has a copper outer shell on an inner portion of which is provided a more durable composition of a silver alloy by pressing or casting to achieve longer lifetime under arcing conditions in air or oxygen while minimizing the cost of materials and fabrication.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.