Electrostatic spray gun for powder coating material
US3940061A · kind A · utility
58Cited by
10References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 16, 1974 |
| Grant date | Feb 24, 1976 |
| Priority date | — |
| Expiry date | Sep 16, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B5/1683
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to an electrostatic spray gun for the deposition of powdered coating material characterized by an improved deposition efficiency and provided with a multi-stage, trigger operated control that permits spraying at a plurality of conditions that may be preselected by the operator. An axially disposed needle charging electrode is used and an axial air flow passage surrounds the same to reduce any troublesome accumulation of powder on the needle under all spraying conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.