Electrostatic spray gun
US4911367A · kind A · utility
24Cited by
4References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 29, 1989 |
| Grant date | Mar 27, 1990 |
| Priority date | — |
| Expiry date | Mar 29, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B5/053
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A continuous electrical connection between a high voltage power source and a paint charging electrode in an electrostatic spray gun. The electrode is mounted on a valve needle which is reciprocated by a trigger mechanism as the spray gun is operated. A novel spring establishes and maintains the electrical connection from a stationary contact on the gun barrel to the moving valve needle. The spring may be mounted on a spacer tube mounted coaxially about the valve needle. The spacer tube can move in an axial direction to exert a force on a seal between the barrel and the valve needle without affecting the electrical connection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.