Paint spray gun
US5090623A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 6, 1990 |
| Grant date | Feb 25, 1992 |
| Priority date | — |
| Expiry date | Dec 6, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B7/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An improved high volume low pressure air (HVLP) operated paint spray gun of the type having adjustable fan air and suitable for operation from a high pressure air source. The high pressure air passes from a high pressure chamber through first or second parallel calibrated orifices to supply both low pressure atomization air and low pressure fan air for controlling the shape of the spray pattern. In one embodiment, both orifices supply air to a low pressure chamber which in turn supplies both atomization air and fan air. A fan air control ring adjusts the flow of low pressure air to fan jet orifices. Rotating the fan air control ring controls both air flow through the second orifice to the low pressure chamber and air flow from the low pressure chamber to the fan jet orifices. In a second embodiment, one orifice supplies only low pressure atomization air and the other orifice supplies only low pressure fan air. A valve adjusts the flow of fan air.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.