David L Lambert

US Patent:

52321568, Aug 3, 1993

Filed:

Mar 19, 1992

Appl. No.:

7/853816

Inventors:

Endre Csordas - Vernon Hills IL
David W. Lambert - Grafton WV

International Classification:

B05B 1502
B05B 114

US Classification:

239117

Abstract:

A self-cleaning spray nozzle and header system sprays liquid upon a predetermined area. As the liquids employed in such spraying operations are often contaminated by suspended particulate matter, blockages of the small nozzle orifice often occur. To clear such blockages and restore the nozzle to operation, a grooved piston forming part of the nozzle orifice is retracted from its seated position within the nozzle barrel. Once the piston is retracted, the barrel opens to its full diameter allowing lodged particles to be flushed away. Several nozzles mounted in tandem upon a fluid distribution pipe form part of a header system which can deliver, in the form of spray, large liquid volumes. The header system allows the self-cleaning function of several nozzles to be efficiently controlled by a single apparatus.