Particulate material applicator and pump
US7793869B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 2005 |
| Grant date | Sep 14, 2010 |
| Priority date | — |
| Expiry date | May 7, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B15/55
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A nozzle assembly for a material application device includes an expansion chamber for slowing down the velocity of powder fed to the nozzle from a dense phase pump. The nozzle assembly includes a nozzle insert that forms the expansion chamber and provides air assist function. The nozzle includes an integral deflector, and further includes a passageway for a charging electrode so that the electrical path is routed away from the powder path, while permitting the electrode tip to be centered in the powder spray pattern from the nozzle. The nozzle also includes air wash for the electrode. The nozzle outlet orifice has a cross-sectional area that is equal to or greater than the inlet cross-sectional area so that a slow moving dense phase powder cloud is produced by the nozzle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.