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US 2004/0069867 A1Published application
Flow volume adjustment device for irrigation sprinkler heads
OwnerPaul M. Corduainventor
Life of this patent
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Abstract
The adjustable arc spray nozzle allows adjustment of the spray arc, the radius, and flow of the water spray provided by the nozzle. The nozzle includes a top member, a base member, and a discharge orifice defined therebetween. A rotatable external upper collar controls the radius of the pattern, an internal helix member controls the arc of the spray pattern, and an internal flow adjustment screw and an optional rotatable external lower collar control the flow of the nozzle.
Claims28
An adjustable arc spray nozzle connectable with a source of pressurized fluid for providing a spray pattern radially disposed about the nozzle, the nozzle comprising:
- a top member having a plurality of elongated pegs extending axially from the top member;
- a base member connected to the top member, the base member having a threaded outer portion, a discharge orifice being formed in a discharge plane between the top member and the base member, and the top member and base member being connected by the plurality of pegs of the top member;
- means mounted on the top member for controlling the radius of the pattern;
- an internal helix member for controlling the arc of the spray pattern of the nozzle, the internal helix member being inserted into the top member, the internal helix member having an internal threaded channel, and the internal helix member having a surface defining a plurality of apertures for receiving the plurality of pegs of the top member such that the internal helix member located does not rotate with respect to the top member and the base member, the internal helix member having a helically configured surface extending about the circumference of the internal helix member, whereby as the internal helix member is moved downwardly the arc of the spray pattern of the nozzle increases, and as the internal helix member is moved upwardly the arc of the spray pattern of the nozzle decreases;
- and
- an internal flow adjustment screw for controlling the flow of the nozzle, the internal flow adjustment screw extending axially through the internal threaded channel of the internal helix member between the top member and base member, whereby upon rotation of the internal flow adjustment screw the internal helix member moves axially in the internal portion of the assembly to control the flow of water through the discharge orifice of the nozzle proportional to the arc of the spray pattern.
3 more elements
An adjustable arc spray nozzle connectable with a source of pressurized fluid for providing a spray pattern radially disposed about the nozzle, the nozzle comprising:
- a top member having a threaded outer portion and a plurality of elongated pegs extending axially from the top member;
- a base member connected to the top member, the base member having a threaded outer portion, a discharge orifice being formed in a discharge plane between the top member and the base member;
- a rotatable external upper collar for controlling the radius of the pattern, the external upper collar being threadedly connected to the threaded outer portion of the top member;
- a rotatable external lower collar for controlling the flow of the nozzle, the rotatable external lower collar being threadedly connected to the threaded outer portion of the base;
- an internal helix member for controlling the arc of the spray pattern of the nozzle, the internal helix member being inserted into the top member, the internal helix member having an internal threaded channel, and the internal helix member having a surface defining a plurality of apertures receiving the plurality of pegs of the top member such that the internal helix member located does not rotate with respect to the top member and the base member, the internal helix member having a helically configured surface extending about the circumference of the internal helix member, whereby as the internal helix member is moved downwardly the arc of the spray pattern of the nozzle increases, and as the internal helix member is moved upwardly the arc of the spray pattern of the nozzle decreases;
- and
- an internal flow adjustment screw for controlling the flow of the nozzle, the internal flow adjustment screw extending axially through the internal threaded channel of the internal helix member between the top member and base member, whereby upon rotation of the internal flow adjustment screw the internal helix member moves axially in the internal portion of the assembly to control the flow of water through the discharge orifice of the nozzle proportional to the arc of the spray pattern.
4 more elements
Dependencies are inferred from the claim text.