Device for electrostatically projecting a coating material and a method for controlling power supply to voltage increasing of said device
US7677481B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2006 |
| Grant date | Mar 16, 2010 |
| Priority date | — |
| Expiry date | Jun 20, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B5/053
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The inventive device for electrostatically projecting a coating product comprises a spray gun provided with voltage increasing means for producing a high direct voltage for a product electrostatic charge, wherein said spray gun is provided with a controllable valve for controlling an atomizing air flow inside the spray gun in the direction to a spraying head. A pressure sensor integrated into the spray gun is used for detecting the atomizing air pressure (P) representative value downstream of the valve and for delivering a signal (S1) for controlling the power supply of the voltage increasing means. Said invention makes it possible to control the power supply of the voltage increasing means according, in particular, to the signal (S1) received from the sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.