Patent ID: 8695900
Filing Date: 2014-04-15
Classification: B05B

Abstract:
1. An irrigation sprinkler head comprising: a deflector; a first valve adjustable to change the length of an arcuate opening for distribution of fluid in a predetermined arcuate span, the first valve comprising a first valve body and a second valve body; a flow path from an inlet through the first valve to the deflector and outwardly away from the deflector within the predetermined arcuate span; wherein the first valve body is rotatable about a central axis and has a first helical surface and wherein the second valve body has a second helical surface, the first and second helical surfaces engaging one another and movable with respect to one another for setting the length of the arcuate opening; and wherein the second helical surface has a helical protrusion projecting away from the second helical surface toward the deflector and wherein the first helical surface has a helical notch formed within the first helical surface, the helical notch receiving the helical protrusion therein.