| 摘要 |
<p>A rotating stream sprinkler (10) including a rotor plate (22) supported on one end of a shaft (26) for rotation, in an operative mode, relative to the shaft (26); a nozzle (48) located along the shaft upstream of the rotor plate (22); the rotor plate (22) formed with a chamber (32) and one end of the shaft (26) has a stator (34) fixed thereto within the chamber (32), the fluid chamber (32) at least partially filed with a viscous fluid; and wherein the chamber (32) is at least partially closed at an upper end thereof by a rotor cap plate (30).</p> |
