Patent ID: 6079637
Filing Date: 2000-06-27
Classification: B05B,Y10S

Abstract:
A sprinkler for irrigating an area having a shape with an irrigating liquid, comprising:a base;an inlet disposed on the base for receiving the irrigating liquid from a source;a nozzle having a central axis, the nozzle being rotatably coupled to the base about the central axis and operatively coupled with the inlet to receive the irrigating liquid, the nozzle being adapted to spray the irrigating liquid out onto the area;an adjustable valve operatively coupled between the inlet and the nozzle for controlling a flow rate of the irrigating liquid through the nozzle;a plate being coupled to and rotatable with the nozzle and having a plate axis which is co-axial with the central axis, the plate including a cam surface having a contour which corresponds with the shape of the area the cam surface including a grooved channel having a radial distance from the plate axis which causes the valve to control the flow rate of the irrigating liquid as the plate rotates;a lever element having a cam engaging element which is slidably engaged with the grooved channel of the plate such that the radial distance of the grooved channel from the plate axis is transferred to the value to control the flow rate of the irrigating liquid, the lever element being operatively coupled to the value such that the contour of the cam surface causes the value to control the flow rate of the irrigating liquid; anda plunging element coupled to the lever element and adapted to move radially with respect to the plate axis of the plate into and out of the base in response to the lever element, the plunging element being coupled to the value to control the flow rate of the irrigating liquid, wherein the lever is adjustable coupled to the plunger for adjusting the flow rate of the irrigating liquid through the valve.