Plasma spray gun having a gas vortex producing nozzle
US4506136A · kind A · utility
49Cited by
5References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 12, 1982 |
| Grant date | Mar 19, 1985 |
| Priority date | — |
| Expiry date | Oct 12, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05H1/3478
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A plasma flame spray gun suitable for being constructed physically smaller than comparable power prior art plasma flame spray guns. The gun includes a nozzle having a tapering portion on the inlet side thereof. A cathode with a flat tip is positioned to at least partially extend into the tapering portion of the nozzle. A gas distribution ring is located around the cathode for creating a vortex around the cathode tip. This causes the arc formed between the tip and the nozzle to have a root which spins around the perimeter of the nozzle tip resulting in less wear and, therefore, extended part life.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.