Variable electrostatic spray coating apparatus and method
US6579574B2 · kind B2 · utility
6Cited by
52References
50Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2001 |
| Grant date | Jun 17, 2003 |
| Priority date | — |
| Expiry date | Jun 21, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05D1/42
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A liquid coating is formed by spraying drops of liquid onto a substrate or a transfer surface from an electrostatic spray head that produces a mist of drops and a wet coating in response to an electrostatic field. During spraying, the electrostatic field is repeatedly altered to change the pattern deposited by the drops. The wet coating can be contacted with two or more pick-and-place devices that improve the uniformity of the coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.