Electrostatic powder spray gun
US4216915A · kind A · utility
Inventors
Key dates
| Filing date | Apr 17, 1978 |
| Grant date | Aug 12, 1980 |
| Priority date | — |
| Expiry date | Apr 17, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B12/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The disclosed gun is of the type having a housing with a nozzle and a deflecting plate spaced from the muzzle and mounted on a rod axially guided in the muzzle, the annular channel formed between the muzzle and the rod serving as a powder channel. Electrodes extend into the powder channel and are connected to a high voltage source. A stepping motor is connected to the rod to change its axial position, and control means are connected to the motor. Digital circuits inside the housing and manually operable switches permit automatic control or manual control from the gun of the deflecting plate spacing, the voltage, and the powder feed. Indicating means on the gun display the values of the controlled parameters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.