| 摘要 |
<p>The percussion spray includes a swing arm (22) equipped with a double-spoon device (34) for rotating the rotary nozzle (12) of the spray. The swing arm may also swing in the vertical plane in relation to the nozzle. The double-spoon device is bistable in relation to the swing arm. The double-spoon device (34), in one of the two stable positions, presents, to the water jet, a single spoon surface associated with one such stable position. A trigger mechanism (54, 58) is provided in order to move the spoon from one of its stable positions to the other. The trigger mechanism may be actuated by two conventional end-of-travel devices (64) which delimit a certain sector to be swept and have an angular position which can be adjusted. The two spoon surfaces (44a and 44b) will be able to have a configuration which is not exactly symmetrical, with the purpose of obtaining a speed of rotation in one direction different from the speed of rotation in the other direction. <IMAGE></p> |
