Patent ID: 8636233
Filing Date: 2014-01-28
Classification: B05B,Y10T

Abstract:
1. An irrigation sprinkler, comprising: a riser; a nozzle rotatably mounted at an upper end of the riser; a turbine mounted in the riser and rotatable by water entering a lower end of the riser; a gear train reduction mounted in the riser; a coupling mechanism mounted in the riser and coupling the gear train reduction and the nozzle; and a pressure regulator valve incorporating: a valve member pivotably mounted in a fluid flow path between the turbine and the nozzle to regulate fluid pressure in the fluid flow path, the valve member configured to pivot about a midpoint of the valve member in response to fluctuations in a first fluid pressure to restrict flow through the valve member and maintain the flow exiting the valve member to a relatively constant second fluid pressure; and a spring mounted to bias the valve member toward a position.