Nozzle assembly for electrostatic spray guns
US4502629A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 1983 |
| Grant date | Mar 5, 1985 |
| Priority date | — |
| Expiry date | Jan 18, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B7/067
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An air atomizing nozzle assembly for electrostatic spray guns. The nozzle assembly includes a fluid tip through which liquid coating material is emitted, an air cap having openings through which pressurized air passes to atomize the liquid coating material emitted from the nozzle and having a pair of opposed air horns through which pressurized air passes to shape the atomized coating material into a flat fan spray pattern, and a retaining ring for securing the air cap to the gun barrel and fluid tip. An annular diffuser is located within an internal chamber in the nozzle assembly which receives the prezzurized fan-shaping air from a passageway passing through the barrel of the gun, redirects it, and equalizes the flow of the fan-shaping air to the opposed air horns. The present invention is particularly useful in applications having low liquid coating material flow rates on the order of less than about 3 fluid ounces of material per minute.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.