| 摘要 |
A lawn sprinkler has a base 10 through which water is directed to a nozzle which directs the water vertically upwardly onto a water dispersing member 28 which is rotatably mounted on a vertical spindle 46. The water impinges first upon a convexly curved surface 52 when it is deflected onto a concavely curved surface 54. The reaction to the force of the water on the dispersing member 28 causes the latter to rotate on the spindle 46, so that water droplets are flung off the edge of the concave surface 54 through a range of angles of inclination as the dispersing member rotates to afford 360 DEG coverage around the sprinkler.
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