US 12,186,766 B2
Nozzle and sprinkler for center pivot end
Lee A. Perkins, Lowden, WA (US); Craig B. Nelson, Walla Walla, WA (US); and Loren Vander Griend, Walla Walla, WA (US)
Assigned to NELSON IRRIGATION CORPORATION, Walla Walla, WA (US)
Filed by NELSON IRRIGATION CORPORATION, Walla Walla, WA (US)
Filed on Nov. 10, 2021, as Appl. No. 17/523,550.
Claims priority of provisional application 63/119,826, filed on Dec. 1, 2020.
Prior Publication US 2022/0168759 A1, Jun. 2, 2022
Int. Cl. B05B 1/26 (2006.01); A01G 25/09 (2006.01); B05B 1/20 (2006.01)
CPC B05B 1/267 (2013.01) [A01G 25/092 (2013.01); B05B 1/20 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A sprinkler nozzle for a sprinkler positioned at a distal end of a center pivot irrigation system, the center pivot irrigation system including a pivot pipe rotatably coupled with a center pivot and a plurality of sprinklers mounted along the pivot pipe, the sprinkler nozzle being cooperable with a deflector plate of the sprinkler and comprising:
a connection part securable to the sprinkler; and
a nozzle opening downstream of the connection part, the nozzle opening defining an outer end of a flow path before impacting the deflector plate, wherein the nozzle opening through which water flows before impacting the deflector plate is part-toroidal shaped and partially blocked or skewed to control water flow to portions of the deflector plate according to a desired wetted area such that a width of the nozzle opening varies circumferentially and flow through the nozzle opening is thereby not uniform across the nozzle opening, and wherein the part-toroidal shaped opening spans an arc less than 360 degrees,
wherein the partially blocked or skewed part-toroidal shape of the nozzle opening is defined by a closed center portion having a radius, and wherein at least a portion of a radial width of the nozzle opening is greater than the radius of the closed center portion.