Electrostatic paint spray gun
US5067434A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 1990 |
| Grant date | Nov 26, 1991 |
| Priority date | — |
| Expiry date | Jun 21, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S239/14
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An electrostatic paint spray gun having built-in high-voltage generator that is cast into insulating material is improved in that the dielectric strength is increased in the region of that face of the insulating member that is adjacent to the charging electrode. In a first solution, the high-voltage cascade is cast such into the plastic member for this purpose that its high-voltage output is situated adjacent the input transformer, whereby a small plug tube for the stranded electrode lead is additionally co-cast into the insulating member parallel to the cascade. In a second solution, an annular gap is left free between the stranded electrode lead and the insulating member, is filled with insulating oil and is sealed with a seal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.