Sprinklers
AssigneeNaan-Dan Irrigation Systems (C.S.) Ltd.
InventorMicael Lerner
Life of this patent
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Abstract
A rotary sprinkler (10) including a water inlet, a water outlet arranged for rotation about a rotation axis (14), a water director associated with the water outlet and a watering pattern determiner associated with at least one of the water outlets and the water director. The sprinkler (10) operates to cause the sprinkler (10) to have a substantially non-repeated watering pattern extending over more than 360 degrees about the rotation axis. The watering pattern is asymmetric with respect to the rotation axis (14) and is rotated for each successive rotation of the water outlet about the rotation axis (14) with respect to the watering pattern of the preceding rotation by a predetermined amount, whereby the successive rotations increase the angular uniformity of watering about the rotation axis.
Claims18
A rotary sprinkler comprising:
- a water inlet;
- a water outlet arranged for rotation about a rotation axis;
- a water director associated with the water outlet:
- and
- a watering pattern determiner associated with at least one of the water outlet and the water director and being operative to cause the sprinkler to have a substantially non-repeated watering pattern extending over more than 360 degrees about said rotation axis, which watering pattern is asymmetric with respect to said rotation axis, said asymmetric watering pattern being rotated for each successive rotation of said water outlet about said rotation axis with respect to said watering pattern of the preceding rotation by a predetermined amount, whereby successive rotations increase the angular uniformity of watering about said rotation axis.
A rotary sprinkler according to any of the preceding claims and wherein said water director comprises a water outlet orientor.
A rotary sprinkler according to any of the preceding claims and wherein said substantially non-repeated watering pattern includes a single pattern portion of generally increasing sprinkling distance and a single pattern portion of generally decreasing sprinkling distance.
A rotary sprinkler comprising:
- a water inlet;
- a water outlet arranged for rotation about a rotation axis;
- a water director associated with the water outlet:
- and
- a watering pattern determiner associated with at least one of the water outlet and the water director and being operative to cause the sprinkler to have a substantially non-repeated watering pattern extending over more than 180 degrees about said rotation axis, which watering pattern is asymmetric with respect to said rotation axis, said asymmetric watering pattern being rotated for each successive rotation of said water outlet about said rotation axis with respect to said watering pattern of the preceding rotation by a predetermined amount, whereby successive rotations increase the angular uniformity of watering about said rotation axis.
Dependencies are inferred from the claim text.