Electrostatic spraying of particulate material
US6138671A · kind A · utility
15Cited by
16References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 2, 1997 |
| Grant date | Oct 31, 2000 |
| Priority date | — |
| Expiry date | Apr 2, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/8206
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method and device (20) for spraying particulate materials in which a high voltage is applied to a mass of the particulate material so as to cause particles to issue from the mass. High voltage from a source (16) is applied to a mass of material (36) stored in a container. A surface of the mass (36) is exposed to the surroundings and the applied voltage is conducted through the bulk material to particles located at the exposed surface which are thereby projected as an electrically charged spray from the mass under the influence of the electric field substantially without any accompanying corona discharge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.