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US 2010/0301142 A1Published application
Sprinkler with variable arc and flow rate and method
AssigneeRain Bird Corporation
InventorsSteven B. Hunnicutt, Samuel C. Walker
Life of this patent
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AssigneeRain Bird Corporation
InventorsSteven B. Hunnicutt, Samuel C. Walker
Estimating the term…
A variable arc sprinkler head or nozzle may be set to numerous positions to adjust the arcuate span of the sprinkler. The sprinkler head includes an arc adjustment valve having two portions that helically engage each other to define an opening that may be adjusted at the top of the sprinkler to a desired arcuate length. The arcuate length may be adjusted by pressing down and rotating a deflector to directly actuate the valve without the need for a hand tool. A method of irrigation is also provided involving moving the deflector between an arc adjustment position and an operational, irrigation position. The sprinkler head may also include a flow rate adjustment valve that may be adjusted by actuation or rotation of an outer wall portion of the sprinkler. Rotation of the outer wall portion causes a flow control member to move axially to or away from an inlet.
An irrigation sprinkler head comprising:
The irrigation sprinkler head of clam 29 wherein the first valve member comprises one or more rotatable outer wall portions of the sprinkler head for causing axial movement of the second valve member.
An irrigation sprinkler head comprising:
A method of irrigation using an irrigation sprinkler head having a rotatable deflector and a valve, the deflector moveable between an operational position and an adjustment position, the valve adjustable to set a length of an arcuate opening for the distribution of fluid from the deflector in a predetermined arcuate span, the method comprising:
Dependencies are inferred from the claim text.