Patent ID: 8789768

Claim:
A variable arc nozzle comprising: a deflector having an underside surface contoured to deliver fluid generally radially outwardly therefrom through an arcuate span; and a nozzle body defining an inlet, an outlet, a first valve portion, and a second valve portion, the inlet capable of receiving fluid from a source, the outlet capable of delivering fluid to the underside surface of the deflector, the first valve portion defining an internal helical surface, and the second valve portion defining an external helical surface that adjustably cooperates with the internal helical surface of the first valve portion to define between the helical surfaces an arcuate slot that is adjustable in size to determine the arcuate span; wherein the nozzle body includes a wall extending axially downstream from the arcuate slot for redirecting fluid flow from the arcuate slot to the underside surface of the deflector.