Spray nozzle

Claim 1

A spray nozzle tip assembly for spraying a fluid material from a spray gun onto an object, said nozzle tip being adapted to be received within a spray gun, comprising, a generally cylindrical body having a portion adapted to be received in position of use with respect to an associated spray gun, said nozzle tip body having an inlet end and outlet end and including an axial bore extending from said inlet end and terminating prior to said outlet end, said inlet end of said nozzle body being positioned in the gun to establish a fluid communication between said nozzle tip body and the spray gun; said nozzle tip body further including a nose portion which is generally tapered toward and terminates in an end face, said end face being located at said outlet end; said end face also having a transverse groove cut therein; said groove intersects said axial bore to form an outlet opening or orifice through which the fluid material from the spray gun will exit to contact the object to be sprayed; said orifice being recessed from said end face; said nose portion including margin portions lying adjacent to and radially outwardly of said end face; said margin portions and said end face defining an external surface finish portion of said nozzle tip; and said external surface portion of said nozzle tip being highly polished to a non-adherent generally smooth surface of not more than a three micro-inch (RMS) surface roughness, said smooth surface being operative to substantially reduce or prevent the collection and resultant drying and build up of fluid material on said nozzle tip surface.