Rotary nozzle
AssigneeRain Bird Corporation
InventorsSamuel C. Walker, Lee James Shadbolt, David Eugene Robertson
Life of this patent
Estimating the term…
Abstract
An irrigation nozzle with a rotating deflector is provided whose rotational speed may be controlled by a friction brake. The nozzle may also include 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. The nozzle may also include a radius reduction valve that may be adjusted by actuation of an outer wall of the nozzle. Rotation of the outer wall causes a flow control member to move axially to or away from an inlet.
Claims18
A nozzle comprising:
- a rotatable deflector having an underside surface contoured to deliver fluid radially outwardly therefrom;
- a nozzle body defining an inlet and an outlet, the inlet configured to receive fluid from a source and the outlet configured to deliver fluid to the underside surface of the deflector to cause rotation of the deflector;
- a brake disposed within the deflector configured to reduce the rotational speed of the deflector, the brake comprising a first brake body that rotates with the deflector, a second brake body that is fixed against the rotation, and a brake pad disposed between and engaging the first brake body and the second brake body;
- wherein at least one of the first brake body and the second brake body includes a spiral surface configured to distribute lubricant on a surface of the brake pad.
A nozzle comprising:
- a deflector having an underside surface contoured to deliver fluid radially outwardly therefrom;
- a nozzle body defining an inlet and an outlet, the inlet configured to receive fluid from a fluid source and the outlet configured to deliver fluid to the underside surface of the deflector,
- the outlet configured to direct fluid against the underside surface of the deflector for the redirection of fluid radially outwardly from the deflector within a predetermined coverage area;
- an outer debris trap in the nozzle body disposed about the outlet and comprising a first wall and a second wall defining an outer channel therebetween, the outer debris trap disposed radially outwardly from the outlet and configured to limit debris from flowing into the outlet;
- and
- a mounting portion configured to mount the nozzle to the fluid source, the mounting portion being disposed upstream of the outer debris trap and downstream of the inlet;
- wherein the outer debris trap is spaced radially outwardly from the outlet such that neither the first wall nor the second wall defines a portion of the outlet.
A nozzle comprising:
- a deflector having an underside surface contoured to deliver fluid radially outwardly therefrom;
- a nozzle body defining an inlet and an outlet, the inlet configured to receive fluid from a fluid source and the outlet configured to deliver fluid to the underside surface of the deflector,
- the outlet configured to direct fluid against the underside surface of the deflector for the redirection of fluid radially outwardly from the deflector within a predetermined coverage area;
- an inner debris trap in the nozzle body disposed about the outlet and comprising a first wall and a second wall defining an inner channel therebetween, the inner debris trap disposed radially outwardly from the outlet and configured to limit debris from flowing into the outlet;
- and
- wherein the inner channel of the inner debris trap includes a bottom surface between the first and second walls, the bottom surface being configured such that the inner channel is of constant depth along the entire inner debris trap;
- wherein the first wall defines a portion of the outlet such that the inner debris trap is adjacent the outlet.
Dependencies are inferred from the claim text.