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A part-circle sprinkler having a sprinkler head incorporating a nozzle continually oscillates between two positions. The sprinkler head is connected to a transmission driven by an impeller The impeller is driven by a reversible stator which can direct a plurality of channelized streams of water agai

A part-circle sprinkler having a sprinkler head incorporating a nozzle continually oscillates between two positions. The sprinkler head is connected to a transmission driven by an impeller The impeller is driven by a reversible stator which can direct a plurality of channelized streams of water against either side of the blades of the impeller and thereby cause the impeller, sprinkler head and nozzle to rotate in a clockwise or a counterclockwise direction. The reversing stator is controlled by a resilient switching arm operated by adjustable fingers on the exterior of the sprinkler head, which set its limits of rotation. As each limit of rotation is reached, one finger exerts a torque on the switching arm. The torque causes the arm to twist until it exerts sufficient force on the reversing stator to overcome the force of the water on the stator vanes and thus reverse the direction of the stator. The sprinkler head then rotates in the opposite direction, which brings the other finger toward the switching arm. The flow of water through the sprinkler is axial from inlet to nozzle.

대표청구항 ▼

In a part-circle sprinkler of the type having a housing adapted for connecting to a conduit supplying water under pressure, an impeller for rotating in response to water flowing axially through the housing and incident on the blades of the impeller, a transmission means driven by the impeller, a spr

In a part-circle sprinkler of the type having a housing adapted for connecting to a conduit supplying water under pressure, an impeller for rotating in response to water flowing axially through the housing and incident on the blades of the impeller, a transmission means driven by the impeller, a sprinkler head adapted for rotation by the transmission, and a nozzle mounted to the sprinkler head, the improvement comprising: reversing stator means, located in said housing in the path of said supplied water directly below said impeller, for altering the direction of water incident on said impeller, thereby changing the direction of rotation of said impeller and said nozzle wherein said reversing stator means comprises a plurality of vane means for smoothly deflecting a plurality of channelized streams of water against the blades of said impeller; means for mounting said reversing stator means to said housing; and actuating means for repeatably applying a direction-reversing stimulus to said reversing stator means, said actuating means mounting to said housing and contacting said reversing stator means.