Electrostatic spray painting apparatus
US5255856A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 17, 1991 |
| Grant date | Oct 26, 1993 |
| Priority date | — |
| Expiry date | Oct 17, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B12/14
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An electrostatic spray painting apparatus includes an electrically-insulated intermediate reservoir for storing therein conductive paint to which a high voltage is directly applied. In addition, the intermediate reservoir includes a cylinder, a piston reciprocatively and slidably disposed within the cylinder, and a fluid-flow straightening member protrudently formed in a part of a cylinder chamber used to be charged with the paint. The cylinder chamber is defined by the cylinder and the piston. An injection hole is defined near an outer peripheral edge of a cylinder wall so as to be connected to a paint and cleaning fluid feed source. A discharge hole is centrally defined in the cylinder wall so as to be connected to a spray gun, the discharge hole being used to discharge the paint and the cleaning liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.