Patent ID: 7032844

Claim:
In combination, an adjustable arc spray nozzle connectable with a source of pressurized fluid for providing a spray pattern in an arc radially disposed about the nozzle, the nozzle including a top member and a base member connected to the top member, a discharge orifice being formed in a discharge plane between the top member and the base member, and an internal helix member inserted into the top member and having an internal threaded channel, wherein the improvement comprises: an internal flow adjustment screw for controlling the flow of the nozzle, the internal flow adjustment screw extending axially through the internal threaded channel of the internal helix member between the top member and base member, whereby rotation of the internal flow adjustment screw controls the flow of water through the discharge orifice of the nozzle proportional to the arc of the spray pattern; and a rotatable external upper collar for controlling the radius of the spray pattern, the external upper collar being threadedly connected to a threaded outer portion of the top member.