| 摘要 |
PCT No. PCT/IL96/00172 Sec. 371 Date Jun. 12, 1998 Sec. 102(e) Date Jun. 12, 1998 PCT Filed Dec. 3, 1996 PCT Pub. No. WO97/21493 PCT Pub. Date Jun. 19, 1997A rotary drive sprinkler comprising a housing with a water inlet for coupling to a water irrigation supply and an outlet nozzle. A drive shaft is rotatably retained within the housing and has a portion extending from the housing through the outlet nozzle, around which water is adapted to flow. A rotary distribution member is fixedly articulated to the portion of the shaft and has at least one deflection surface in stream communication with the outlet nozzle. The housing also accommodates a rotary drive mechanism for rotating the drive shaft and a speed regulating mechanism for regulating the speed of rotation of the distribution member. The arrangement is such that the sprinkler is devoid of any dynamic seals. |
