Rotary sprinkler without dynamic seals
AssigneeDan Mamtirim
InventorBenjamin Spenser
Life of this patent
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Abstract
A 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.
Claims20
A rotary drive sprinkler devoid of any dynamic seals and comprising:
- a housing 2 with a water inlet 8 for coupling to a water irrigation supply and an outlet nozzle 24 of said housing 2;
- a rotary drive mechanism 10 accommodated within said housing 2 and adapted for rotating a drive shaft 18;
- a rotary distribution member 28 formed with at least one deflection recess 32 being in stream communication with said outlet nozzle 24;
- the invention characterized in that:
- the drive shaft 18 has a portion 22 extending from the housing 2 through said outlet nozzle 24 and around which water is adapted to flow;
- the drive shaft 18 is coaxially retained with respect to a longitudinal axis of the housing 2;
- the rotary distribution member 10 is fixed to said portion 22 of the drive shaft 18;
- the distribution member 10 is rotatably supported at a top end of the housing;
- and
- the sprinkler further comprises a speed restricting mechanism 34, 36;
- 14, 32 for reducing the speed of rotation of the drive shaft 18.
Dependencies are inferred from the claim text.