High volume/low pressure spray gun

Details High volume/low pressure spray gun High volume/low pressure spray gun

1989-11-06

1995-09-26

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

With heating or cooling means for the system or system fluid

Heating means

239290, 239415, B05B 124, B05B 712

Patent

active

054528550

ABSTRACT:
An improved high volume/low pressure spray gun for spraying liquids such as paint. The spray gun includes a nozzle for mixing a liquid, such as paint in a solvent carrier, with a higher-than-atmospheric pressure gas, such as compressed air, and projecting the mixture towards the surface to be coated. The liquid is conveyed to the nozzle through a tube. A valve, ordinarily operated by a manual trigger, turns liquid flow on or off. Compressed air is conveyed through a hose to a vortex tube, then from the vortex tube to the nozzle. The vortex tube receives compressed gas at a selected temperature, ordinarily room temperature, and divides it into a high volume warm stream sent to the nozzle and a cool stream which is ordinarily exhausted to the atmosphere. The resulting high volume, low pressure, warm propellant air produces improved painting quality with less overspray.

REFERENCES:
patent: 2942787 (1960-06-01), Bok et al.
patent: 3018968 (1962-01-01), Levey
patent: 3208229 (1965-09-01), Fulton
patent: 3219027 (1965-11-01), Roche
patent: 3219274 (1965-11-01), Roche
patent: 3796376 (1974-03-01), Farnsteiner
patent: 4911365 (1990-03-01), Thiel et al.
patent: 5265801 (1993-11-01), Larson

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