Plasma arc torch having water injection nozzle assembly
US5660743A · kind A · utility
72Cited by
8References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 5, 1995 |
| Grant date | Aug 26, 1997 |
| Priority date | — |
| Expiry date | Jun 5, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05H1/3484
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A plasma arc torch having a nozzle assembly positioned adjacent the discharge end of the electrode of the torch, and wherein the nozzle assembly comprises a nozzle base defining an annular outer surface and a lower nozzle member defining an annular inner surface which is spaced from the outer surface so as to define an annular water passageway therebetween. The annular water passageway defines an angle with the longitudinal axis of the torch which is less than about 30.degree. which provides both an efficient cooling of the nozzle assembly and constriction of the plasma arc, and without unduly cooling the plasma arc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.