| 摘要 |
A sprinkler device incorporates a rotatable shaft having a cam, the cam having a radially outwardly projecting shaft lobe. A water distribution plate is supported on one end of the shaft and is adapted to be impinged upon by a stream emitted from a nozzle causing the water distribution plate and the shaft to rotate. A hesitator assembly is supported on an opposite end of the shaft, the assembly including a stationary housing having a sealed chamber at least partially filled with a viscous fluid. The shaft passes through the chamber, with the cam and shaft lobe located within said chamber. A rotor ring is located within the chamber in surrounding relationship to the cam, and the rotor ring has two or more inwardly projecting hesitator lobes movable into and out of a path of rotation of the shaft lobe, such that rotation of the shaft and water distribution plate is slowed during intervals when the shaft lobe engages and pushes past the one or more hesitator lobes.
|
