Electrostatic powder coating apparatus
US4116384A · kind A · utility
Inventor
Key dates
| Filing date | May 31, 1977 |
| Grant date | Sep 26, 1978 |
| Priority date | — |
| Expiry date | May 31, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B5/032
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Electrostatic powder-coating method, whereby a flat fan-spray of electrically charged powder particles is directed toward an object to be coated, said spray being formed from an incident stream consisting of a mixture of powder and carrier-gas, comprising means for re-homogenizing said incident stream, means for subsequently deflecting said stream in a direction substantially perpendicular to its incident direction, means for thereafter driving said stream against the internal walls of a duct designed to convert said stream into a fan-shaped spray, and means for electrically charging the powder particles of the said spray. The re-homogenizing means may, however, be omitted in certain cases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.