Adjustable arc, adjustable flow rate sprinkler

• US 7,159,795 B2
• Filed: 03/31/2004
• Issued: 01/09/2007
• Est. Priority Date: 03/28/2001
• Status: Expired due to Term

• Current Assignee: Hunter Industries Incorporated
• Original Assignee: Nelson Irrigation Corporation
• Inventors: Perkins, Lee A., Sesser, George L., McCoon, Steven T.
• Primary Examiner(s): Nguyen; Dinh Q.
• Application Number:
  US10/813,443
• Publication Number:
  US 20040227007A1
• Time in Patent Office: 1,014 Days
• Field of Search: 239/222.11, 239/203, 239/231, 239/243, 239/252, 239/451, 239/511, 239/512, 239/513, 239/514
• US Class Current: 239/203
• CPC Class Codes: B05B 1/262 with fixed deflectors
• CPC Class Codes: B05B 1/304 the controlling element being a lift valve
• CPC Class Codes: B05B 15/74 driven by the discharged fluid
• CPC Class Codes: B05B 3/005 using viscous dissipation, e.g. a rotor movable in a chamber filled with oil
• CPC Class Codes: B05B 3/0486 the spray jet being generated by a rotary deflector rotated by liquid discharged onto it in a direction substantially parallel its rotation axis

Abstract

A sprinkler head includes a base; an arc adjustment ring; a nozzle and a stream deflector supported by an elongated stem carried by the base, the nozzle and the stream deflector cooperating to define an adjustable nozzle orifice; a water distribution plate secured to a shaft and located downstream of the nozzle; and a drive train operatively connected between the arc adjustment ring and the nozzle to rotate the nozzle relative to the stream deflector to adjust the nozzle orifice between limit positions. The stem is rotatable within the base upon over-rotation of the arc adjustment ring beyond the limit positions. The sprinkler head also incorporates a throttle control member movable axially relative to a flow restriction seat, to thereby adjust flow rate through the nozzle, and means for permitting rotation of the throttle control member with the shaft upon over-rotation of the shaft.

Claims

1. A sprinkler head comprising a base;

a nozzle assembly including first and second components supported within the base, said nozzle assembly defining an adjustable arcuate discharge orifice;

a water distribution plate having a plurality of stream receiving drive grooves and supported for rotation on a normally non-rotable shaft extending upwardly from said base, and adapted to be impinged by a stream emitted from the nozzle to thereby rotate said water distribution plate relative to said shaft to thereby distribute the stream over an arc of coverage determined by said arcuate discharge orifice; and

an arc adjustment ring rotatably mounted on said base, said arc adjustment ring operatively connectable with said nozzle assembly for rotating one of said first and second components relative to the other of said first and second components for adjusting said arc of coverage.

2. The sprinkler head of claim 1 wherein said water distribution plate is mounted for rotation about said shaft and formed with an interior chamber defined by upper and lower bearings through which said shaft extends, and an interior surface of the water distribution plate;

a stator fixed to the shaft and located within the chamber; and

wherein said chamber is at least partially filled with a viscous fluid.

3. The sprinkler head of claim 1 wherein an elongated stem is supported within said base, said stem supporting said nozzle assembly, said shaft and said water distribution plate, and said sprinkler component comprises a pop-up sprinkler assembly including a fixed housing and an extendable tube, said base located on said extendable tube;

and wherein said stem, nozzle assembly, shaft and water distribution plate are movable axially relative to said base from an inoperative retracted position where said water distribution plate is seated on said arc adjustment ring, to an operative extended position where said water distribution plate is axially spaced from said base.

4. The sprinkler head of claim 3 wherein said arc adjustment ring is operatively connectable with said nozzle assembly only when said water distribution plate is in said operative extended position.

5. The sprinkler head of claim 3 wherein in use, said extendable tube extends out of said fixed housing before said water distribution plate moves to said operative extended position.

6. A sprinkler head comprising:

a base;

a nozzle supported within said base;

a water distribution plate supported for rotation on one end of a normally non-rotating shaft extending upwardly from said base and through said nozzle, said water distribution plate located in axially spaced relationship to said nozzle and adapted to be impinged by a stream emitted from the nozzle and rotated to distribute the stream; and

a throttle control member mounted on an opposite end of said shaft such that rotation of said shaft in an adjustment mode causes said throttle control member to move relative to a flow restriction portion, to thereby adjust flow rate through said nozzle and a throw radius of the stream emitted from said nozzle.

7. The sprinkler head of claim 6 wherein an externally threaded sleeve is secured to said opposite end of said shaft and said throttle control member is threadably received on said sleeve, said throttle control member being constrained against rotation.

8. The sprinkler head of claim 6 wherein said throttle control member and said flow restriction portion are configured to always permit a predetermined minimum flow of water through said nozzle.

9. The sprinkler head of claim 8 wherein said predetermined minimum flow is sufficient to maintain rotation of said water distribution plate.

10. The sprinkler head of claim 6 wherein a distal end of said shaft projects from said water distribution plate to thereby allow a user to rotate said shaft to adjust said flow rate.

11. The sprinkler head of claim 10 wherein said distal end of said shaft is formed with a groove adapted to receive a tool for rotating said shaft.

12. The sprinkler head of claim 6 wherein said shaft is normally rotationally stationary and said water distribution plate rotates relative to said shaft.

13. The sprinkler head of claim 12 wherein said water distribution plate is formed with an interior chamber defined by upper and lower bearings through which said shaft extends, and an interior surface of the rotor plate;

a stator fixed to the shaft and located within the chamber; and

wherein said chamber is at least partially filled with a viscous fluid.

14. The sprinkler head of claim 6 wherein said sprinkler component comprises a pop-up sprinkler assembly including a fixed housing and an extendable tube, said base located on an upper end of said extendable tube;

and wherein said nozzle, shaft and water distribution plate are movable axially relative to said base from an inoperative retracted position where said water distribution plate is seated on said base, to an operative extended position where said water distribution plate is axially spaced from said base.

15. The sprinkler head assembly of claim 14 and wherein in use, said extendable tube extends out of said fixed housing before said water distribution plate moves to said operative extended position.

16. A sprinkler head comprising:

a base;

a nozzle assembly including a discharge orifice supported within the base;

a water distribution plate supported for rotation on one end of a shaft extending upwardly from said base, said water distribution plate located in axially spaced relationship to said nozzle and adapted to be impinged by a stream emitted from the nozzle assembly and rotated to distribute the stream;

an arc adjustment ring rotatably mounted on said base, said arc adjustment ring operatively connectable with said nozzle assembly for rotating one component of said nozzle assembly relative to another component of said nozzle assembly for adjustment of said arcuate discharge orifice; and

a throttle control member movably supported on an opposite end of said shaft such that rotation of said shaft causes said throttle control member to move relative to a flow restriction portion, to thereby adjust flow rate through said nozzle assembly and a throw radius of the stream emitted from the nozzle assembly.

17. The sprinkler head of claim 16 wherein said water distribution plate is formed with an interior chamber defined by upper and lower bearings through which said shaft extends, and an interior surface of the water distribution plate;

a stator fixed to the shaft and located within the chamber; and

wherein said chamber is at least partially filled with a viscous fluid.

18. The sprinkler head of claim 16 wherein an elongated stem is supported within said base, said stem supporting said nozzle assembly, said shaft and said water distribution plate, and said sprinkler component comprises a pop-up sprinkler assembly including a housing and an extendable tube, said base located on an upper end of said extendable tube;

wherein said stem, nozzle assembly, shaft and water distribution plate are movable axially relative to said base from an inoperative retracted position where said water distribution plate is seated on said base, to an operative extended position where said water distribution plate is axially spaced from said base.

19. The sprinkler head of claim 18 including a first coil spring radially outward of a stream emitted from the nozzle assembly, said first coil spring having one end engaging a downstream end of said stem and an opposite end engaging said arc adjustment ring, said coil spring biasing said water distribution plate toward said inoperative retracted position.

20. The sprinkler head of claim 18 wherein said arc adjustment ring is operatively connectable with said nozzle assembly only when said water distribution plate is in said operative extended position.

21. The sprinkler head of claim 18 wherein, in use, said extendable tube extends out of said fixed housing before said rotor plate moves to said operative extended position.

22. The sprinkler head of claim 16 wherein said throttle control member and said flow restriction portion are configured to always permit a predetermined minimum flow of water through said nozzle assembly, sufficient to maintain rotation of said rotor plate.

23. The sprinkler head of claim 16 wherein a distal end of said shaft projects from said water distribution plate to thereby allow a user to rotate said shaft to adjust said flow rate and said throw radius.

24. The sprinkler head of claim 23 wherein said distal end of said shaft is formed with a groove adapted to receive a tool for rotating said shaft.

25. A sprinkler head comprising:

a base;

a nozzle assembly supported in said base and having first and second components defining an adjustable discharge orifice;

a water distributor supported for rotation on one end of a shaft extending upwardly from said base, said water distributor located in axially spaced relationship to said nozzle assembly and adapted to be impinged by a stream emitted from the nozzle assembly and rotated to distribute the stream;

an arc adjustment member operatively connectable with said nozzle assembly for rotating said first and second components relative to each other for adjustment of said arcuate discharge orifice; and

a throttle control member movably supported by said shaft upstream of the distributor such that rotation of said shaft causes said throttle control member to move relative to a flow restriction portion, to thereby adjust flow rate through said nozzle assembly.

26. The sprinkler head of claim 25 wherein said water distributor is formed with an interior chamber defined by upper and lower bearings through which said shaft extends, and an interior surface of the water distributor;

a stator fixed to the shaft and located within the chamber; and

wherein said chamber is at least partially filled with a viscous fluid.

27. The sprinkler head of claim 25 wherein an elongated stem is supported within said base, said stem supporting said nozzle assembly, said shaft and said water distribution plate, and said sprinkler component comprises a pop-up sprinkler assembly including a housing and an extendable tube, said base located on an upper end of said extendable tube;

wherein said stem, nozzle assembly, shaft and water distributor are movable axially relative to said base from an inoperative retracted position where said water distributor is seated on said base, to an operative extended position where said water distributor is axially spaced from said base.

28. The sprinkler head of claim 27 including a first coil spring radially outward of a stream emitted from the nozzle assembly, said first coil spring having one end engaging a downstream end of said stem and an opposite end engaging said arc adjustment member, said coil spring biasing said water distributor toward said inoperative retracted position.

29. The sprinkler head of claim 28 wherein said arc adjustment member is operatively connectable with said nozzle assembly only when said water distributor is in said operative extended position.

30. The sprinkler head of claim 28 wherein, in use, said extendable tube extends out of said fixed housing before said water distributor moves to said operative extended position.

31. The sprinkler head of claim 25 wherein said throttle control member and said flow restriction portion are configured to always permit a predetermined minimum flow of water through said nozzle assembly, sufficient to maintain rotation of said water distributor.

32. The sprinkler head of claim 25 wherein a distal end of said shaft projects from said water distributor to thereby allow a user to rotate said shaft to adjust said flow rate.

33. The sprinkler head of claim 32 wherein said distal end of said shaft is formed with a groove adapted to receive a tool for rotating said shaft.

34. The sprinkler head of claim 25 wherein said arc adjustment member comprises an arc adjustment ring rotatably mounted on said base.

35. A sprinkler head comprising a base adapted to be secured to a component supplying water under pressure;

an arc adjustment member rotatably mounted on said base;

a nozzle assembly having first and second components defining an adjustable nozzle orifice;

a water distributor secured to a shaft extending from said base, said water distributor located downstream of said nozzle assembly wherein said nozzle assembly, said shaft and said water distributor are supported on a stem supported within said base;

a drive mechanism operatively connected between said arc adjustment member and said nozzle assembly enabling relative rotation of said first and second components to thereby adjust said nozzle orifice between a pair of limit positions;

said stem rotatable within said base upon over-rotation of said arc adjustment member beyond either of said pair of limit positions.

36. The sprinkler head of claim 35 wherein said drive mechanism is operable only when said stem and nozzle assembly are in an extended position relative to said base.

37. The sprinkler head of claim 35 wherein said base has an interior surface provided with a plurality of axially extending, closely spaced ribs and said stem is formed at one end thereof with a radially extending flange engaged with said closely spaced ribs.

38. The sprinkler of claim 37 wherein said radially extending flange is provided with a plurality of annularly spaced spring tabs, each tab having a radial projection adapted to engage said ribs, wherein said spring tabs serve to hold said stem against rotation upon the application to said arc adjustment member of a normal range of torque sufficient to permit rotation of said arc adjustment member and nozzle assembly between said limit positions, but permit over-rotation of said stem and nozzle assembly relative to said base upon the application to said arc adjustment member of excessive torque.

39. A sprinkler head comprising a base;

an elongated stem supported within the base;

a nozzle and a stream deflector supported within the stem, said nozzle and stream deflector cooperating to define an arcuate orifice;

a water distribution plate supported on a shaft extending upwardly from said base, said water distribution plate located in axially spaced relationship to said nozzle and adapted to be impinged by a stream emitted from the nozzle;

a throttle control member secured to an upstream end of said shaft such that rotation of said shaft causes said throttle control member to move relative to a flow restriction portion, to thereby adjust flow rate through said nozzle and a throw radius of the stream emitted from aid nozzle, said throttle control member engageable with a seat in a maximum restriction position; and

said throttle control member having flexible tabs extending radially therefrom for interaction with axially extending ribs on an interior surface of said stem to thereby constrain said throttle control member against rotation when said shaft is rotated and to thereby move said throttle control member axially toward or away from said maximum restriction position;

said flexible tabs permitting rotation of said throttle control member with said shaft upon over-rotation of said shaft.

40. A sprinkler head comprising:

a base;

a nozzle supported within said base;

a water distribution plate supported for rotation on one end of a normally non-rotatable shaft extending upwardly from said base and through said nozzle, said water distribution plate provided with at least one drive groove and located in axially spaces relationship to said nozzle and adapted to be impinged by a stream emitted from the nozzle thereby causing said water distribution plate to rotate relative to said shaft; and

a throttle control member mounted on said shaft upstream of said nozzle such that rotation of said shaft in an adjustment mode causes said throttle control member to move relative to a flow restriction portion, to thereby adjust flow rate through said nozzle.