A rotating stream sprinkler including a rotor plate supported on one end of a shaft for rotation, in an operative mode, relative to the shaft; a nozzle located along the shaft upstream of the rotor plate; the rotor plate formed with a chamber and one end of the shaft has a stator fixed thereto within the chamber, the fluid chamber at partially filled with a viscous fluid; and wherein the chamber is at least partially closed at an upper end thereof by a rotor cap plate; and further wherein an underside of the rotor cap plate is provided with a first plurality of teeth and an upper surface of the stator is provided with a second plurality of mating teeth adapted to engage the first plurality of teeth to enable rotation of the rotor plate with the shaft in the adjustment mode. A flow rate adjustment mechanism includes a throttle member threadably mounted on the shaft for movement relative to the shaft, toward or away from an annular seat having a discontinuous edge such that the flow rate cannot be shut off by having the throttle member engage the seat.
|
26. A rotating stream sprinkler comprising means for delivering liquid to a nozzle; means downstream of said nozzle for distributing liquid emitted from said nozzle in a desired sprinkling pattern; means for adjusting flow rate of water to said nozzle; and means for controlling a speed of rotation of said means for distributing said liquid.
11. A rotating stream sprinkler assembly comprising a sprinkler having an inlet, an outlet including a stationary nozzle; a rotatable stream distributor plate mounted on a shaft downstream of said nozzle and having stream distribution grooves adapted to receive a stream from said nozzle and to distribute said stream, said shaft and said nozzle supported within a base component of the sprinkler; and means for adjusting the flow rate of water flowing to said nozzle.
21. A rotating stream sprinkler assembly comprising a sprinkler body having an inlet and an outlet including a stationary nozzle; a rotatable stream distributor plate mounted on a shaft for rotation relative to the shaft, the distributor plate located downstream of said nozzle and having stream distribution grooves adapted to receive a stream from said nozzle and to distribute said stream; a flow rate adjustment mechanism comprising a throttle member threadably mounted on said shaft for movement relative to said shaft, toward or away from an annular seat having a discontinuous edge such that the flow rate cannot be shut off by having said throttle member engage said seat.
29. A rotating stream sprinkler assembly including a sleeve having an inlet and an outlet including a stationary nozzle; a rotatable stream distributor plate mounted on one end of a shaft for rotation relative to the shaft, said shaft supported in said sleeve, the distributor plate located downstream of said nozzle and having stream distribution grooves adapted to receive a stream from said nozzle and to distribute said stream; a flow rate adjustment mechanism comprising a throttle member threadably mounted on said shaft for movement within said sleeve, relative to said shaft, toward or away from an annular seat having a discontinuous edge such that the flow rate cannot be shut off by having said throttle member engage said seat.
0. 39. A method of adjusting flow rate to a stationary nozzle in a rotating stream sprinkler where the nozzle is supported in an operative mode on one end of a shaft that is non-rotatable in said operative mode, and where a stream distributor plate is supported on the shaft for rotation relative to the shaft, axially downstream of the nozzle, the method comprising:
(a) providing a pair of throttle components on the shaft upstream of the nozzle, said pair of throttle components including a first throttle component fixed to the shaft and a second throttle component keyed to the nozzle to prevent rotation thereof; and
(b) in an adjustment mode, rotating said shaft and said first throttle component relative to said second throttle component to thereby adjust flow to the nozzle.
27. A rotating stream sprinkler comprising a sprinkler body having an inlet and an outlet including a stationary nozzle; a rotatable stream distributor plate mounted on a shaft for rotation relative to the shaft, the distributor plate located downstream of said nozzle and having stream distribution grooves adapted to receive a stream from said nozzle and to distribute said stream; said distributor plate having a chamber formed therein at least partially filled with a viscous fluid, and a stator fixed to said shaft within said chamber, wherein rotational speed of said rotatable stream distributor plate is viscously dampened; and a flow rate adjustment mechanism comprising a throttle member threadably mounted for movement relative to said shaft, toward or away from an annular seat upstream of said throttle member.
0. 33. A method of adjusting flow rate to a stationary nozzle in a rotating stream sprinkler where the nozzle is supported in an operative mode on one end of a shaft that is non-rotatable in said operative mode, and where a stream distributor plate is supported on the shaft for rotation relative to the shaft, axially downstream of the nozzle, the method comprising:
(a) providing a pair of throttle components on the shaft upstream of the nozzle, one of said pair of throttle components fixed to an opposite end of the shaft and the other of said throttle components located axially between the first throttle component and the nozzle and keyed to the nozzle to prevent rotation thereof; and
(b) in an adjustment mode, rotating said shaft and said first throttle component relative to said second throttle component to thereby adjust flow to the nozzle.
1. A rotating stream sprinkler comprising:
a rotor plate supported on one end of a shaft for rotation, in an operative mode, relative to the shaft; a nozzle located along said shaft upstream of said rotor plate, said shaft and said nozzle supported within a base component of the sprinkler; said rotor plate formed with a chamber, with one end of said shaft having a stator fixed thereto within said chamber, said chamber at least partially filled with a viscous fluid; and wherein said chamber is at least partially closed at an upper end thereof by a rotor plate cap; and further wherein an underside of said rotor plate cap is provided with a first plurality of teeth and an upper surface of said stator is provided with a second plurality of teeth adapted to engage said first plurality of teeth to enable rotation of said rotor plate with said shaft in an adjustment mode.
0. 35. A rotating stream sprinkler assembly comprising:
a sprinkler having an inlet;
an outlet including a nozzle;
a rotatable stream distributor plate mounted on a normally non-rotatable shaft downstream of said nozzle and having stream distribution grooves adapted to receive a stream from said nozzle and to cause said distributor plate to rotate relative to said shaft in an operational mode to thereby distribute said stream, and
a pair of throttle components including a first throttle component fixed to said shaft and having flow restriction surfaces thereon, and a second throttle component having flow ports therein, wherein said shaft and said first throttle component are rotatable in an adjustment mode to rotate said first throttle component relative to said second throttle component such that said flow restriction surfaces rotate relative to said flow ports to increase or decrease flow through said flow component and said nozzle.
0. 43. A rotating stream sprinkler assembly comprising:
a sprinkler having an inlet;
a nozzle;
a rotatable stream distributor plate mounted on a normally non-rotatable shaft downstream of said nozzle and having stream distribution grooves adapted to receive a stream from said nozzle and to cause said distributor plate to rotate relative to said shaft in an operational mode to thereby distribute said stream, and
a pair of throttle components including a first throttle component fixed to said shaft and having one or more flow restriction surfaces thereon, and a second throttle component having at least one flow port therein, wherein said shaft and said first throttle component are rotatable in an adjustment mode to rotate said first throttle component relative to said second throttle component such that said one or more flow restriction surfaces rotate relative to said at least one flow port to increase or decrease flow through said flow component and said nozzle.
0. 30. A rotating stream sprinkler assembly comprising a sprinkler having an inlet, an outlet including a nozzle; a rotatable stream distributor plate mounted on a normally non-rotatable shaft downstream of said nozzle and having stream distribution grooves adapted to receive a stream from said nozzle and to cause said distributor plate to rotate relative to said shaft in an operational mode to thereby distribute said stream, and a pair of throttle components including a first throttle component fixed to said shaft and having flow restriction surfaces thereon, and a second stationary throttle component located axially between said nozzle and said first throttle component and having flow ports therein, wherein said shaft and said first throttle component are rotatable in an adjustment mode to rotate said first throttle component relative to said second throttle component such that said flow restriction surfaces rotate relative to said flow ports to increase or decrease flow through said flow component and said nozzle.
2. The rotating stream sprinkler of
3. The rotating stream sprinkler of
4. The rotating stream sprinkler of
5. The rotating stream sprinkler of
6. The rotating stream sprinkler of
7. The rotating stream sprinkler of
8. The rotating stream sprinkler of
9. The rotating stream sprinkler of
10. The sprinkler of
12. The rotating stream sprinkler of
13. The rotating stream sprinkler of
14. The rotating stream sprinkler of
15. The rotating stream sprinkler of
16. The rotating stream sprinkler of
17. The rotating stream sprinkler of
18. The rotating stream sprinkler of
19. The rotating stream sprinkler of
20. The rotating stream sprinkler of
22. The rotating stream sprinkler of
23. The rotating stream sprinkler of
24. The rotating stream sprinkler of
25. The rotating stream sprinkler of
28. The rotating stream sprinkler of
0. 31. The rotating stream sprinkler assembly of
0. 32. The rotating stream sprinkler of
0. 34. The method of
0. 36. The rotating stream sprinkler of
0. 37. The rotating stream sprinkler of
0. 38. The rotating stream sprinkler of
0. 40. The method of
0. 41. The method of
0. 42. The method of
|
This is a continuation-in-part of application Ser. No. 09/433,299 filed Nov. 3, 1999, now U.S. Pat. No. 6,244,521.
This invention relates to landscape and agricultural irrigation sprinklers and, specifically, to a rotating, viscously damped sprinkler which permits adjustment of the stream pattern, throw radius and flow rate.
Sprinklers utilizing a fixed nozzle to emit a stream onto the grooves of a viscously damped rotor plate are known in the art and examples of such constructions may be found in commonly owned U.S. Pat. Nos. 5,288,022 and 5,058,806. Sprinklers of this type may be incorporated into pop-up type arrangements or they may be mounted on, for example, fixed riser pipes. In either case, it is possible to employ adjustable or interchangeable nozzles having orifices which emit a 360° stream, a 180° stream, a 90° stream, etc. so as to produce a desired sprinkling pattern, to be determined primarily by the location of the sprinkler. There is also a need, however, to be able to adjust the throw radius and flow rate of the sprinkler without varying the water pressure.
This invention provides, in one exemplary embodiment, an internal rotary valve in the base of the sprinkler mechanism which can be actuated by pressing down on the sprinkler rotor plate to thereby engage a valve drive mechanism, and then rotating the rotor plate to open or close the internal valve between maximum open or closed positions, or any position therebetween.
In another exemplary embodiment, the flow rate adjustment mechanism incorporates an axially movable flow restrictor that is configured to restrict, but not completely shut off, the flow of water to the sprinkler nozzle.
As is well known in the art, the rotor plate itself is provided with specially configured grooves which cause the rotor plate to rotate when a stream emitted from the nozzle impinges on the grooves. The plate itself is mounted for rotation about a normally fixed, i.e., non-rotating shaft. Within the rotor plate, there is a chamber adapted to be at least partially filled with a high viscosity fluid. At the same time, there is a fixed stator mounted on the shaft, located within the chamber. As the rotor plate and chamber wall rotate about the shaft and the fixed stator, shearing of the viscous fluid occurs, slowing down the rotation of the rotor plate to produce a uniform and more well defined pattern. The shaft extends out of the rotor plate and into the sprinkler body, through the center of the nozzle. The nozzle itself is interchangeable with other nozzles having various opening configurations.
In one exemplary embodiment, the nozzle and an underlying generally cylindrical core flow path component are sandwiched between a removable sprinkler body cap and a baffle fixed to the lower end of the shaft for rotation with the shaft. The baffle contains a series of spokes or lobes which can rotate relative to ports formed in the core flow path component to regulate the amount of water flowing to the nozzle.
A rotor plate cap, held in place on the rotor plate by a retainer ring, is formed with an annular array of teeth adapted to engage with a mating annular array of teeth formed in the upper surface of the stator within the fluid chamber. The rotor plate cap and rotor plate can be pressed downwardly (assuming an upright orientation for the sprinkler) on the shaft (and relative to the shaft) so as to cause the teeth on the rotor plate cap and the fixed stator to engage. With the teeth so engaged, a “drive” mechanism is established between the rotor plate and the shaft so that manual rotation of the rotor plate causes the shaft to rotate as well. This results in the baffle rotating relative to the core flow path component to thereby throttle the flow through ports in the core to achieve the desired throw radius. When the rotor plate is returned upwardly to its original position, the respective teeth on the rotor plate cap and stator are disengaged, and the rotor plate is then free to rotate relative to the shaft in a normal operating mode.
In a second exemplary embodiment, the sprinkler body is simplified by incorporating three separate component parts, i.e., the sprinkler body cap, an inner sleeve and a part of the nozzle into a single base piece. The remaining components are mounted on the shaft, including a second nozzle component and the flow rate adjustment mechanism. With regard to the latter, a collar is press fit onto the lower end of the shaft, with threads formed on its exterior surface. A sleeve-like throttle member, constrained against rotation by interaction with a spider component, is threaded onto the collar so that manual rotation of the axially stationary shaft results in the throttle member moving up or down on the shaft, depending upon the direction of rotation of the shaft. The throttle member thus moves axially toward or away from a fixed seat secured to an otherwise conventional filter device which is itself fixed to the lower end of the base. The fixed seat comprises four vertically extending ribs in an annular array so that, when the throttle member is fully engaged with the seat, water flow to the nozzle will be restricted but not shut off. The way in which the shaft is rotated manually via the rotor plate to make the desired adjustment is otherwise as described above in connection with the first embodiment.
Thus, in accordance with its broader aspects, the present invention relates to a rotating stream sprinkler comprising a rotor plate supported on one end of a shaft for rotation, in an operative mode, relative to the shaft; a nozzle located along the shaft upstream of the rotor plate; the rotor plate formed with a chamber and one end of the shaft has a stator fixed thereto within the chamber, the fluid chamber at least partially filled with a viscous fluid; and wherein the chamber is at least partially closed at an upper end thereof by a rotor cap plate; and further wherein an underside of the rotor cap plate is provided with a first plurality of teeth and an upper surface of the stator is provided with a second plurality of mating teeth adapted to engage the first plurality of teeth in an adjustment mode.
In accordance with another aspect, the present invention relates to a rotating sprinkler comprising a sprinkler body having an inlet and an outlet including a stationary nozzle; a rotatable stream distributor plate mounted on a shaft downstream of the nozzle and having stream distribution grooves adapted to receive a stream from the nozzle and to distribute the stream; and means for adjusting the flow rate of water flowing to the nozzle.
In accordance with still another aspect, the present invention relates to a rotating sprinkler comprising a sprinkler body having an inlet and an outlet including a stationary nozzle; a rotatable stream distributor plate mounted on a shaft for rotation relative to the shaft, the distributor plate located downstream of the nozzle and having stream distribution grooves adapted to receive a stream from the nozzle and to distribute the stream; a flow rate adjustment mechanism comprising a throttle member threadably mounted on the shaft for movement relative to the shaft, toward or away from an annular seat having a discontinuous edge such that the flow rate cannot be shut off by having the throttle member engage the seat.
In still another aspect, the present invention relates to a rotating stream sprinkler comprising means for delivering liquid to a nozzle; means downstream of the nozzle for distributing liquid emitted from the nozzle in a desired sprinkling pattern; means for adjusting flow rate of water to the nozzle; and means for controlling speed of rotation of the means for distributing the liquid.
In still another aspect, the present invention relates to a rotating sprinkler comprising a sprinkler body; having an inlet, an outlet including a stationary nozzle; a rotatable stream distributor plate mounted on a shaft for rotation relative to the shaft, the distributor plate located downstream of the nozzle and having stream distribution grooves adapted to receive a stream from the nozzle and to distribute the stream; the distributor plate having a chamber formed therein at least partially filled with a viscous fluid, and a stator fixed to the shaft within the chamber, wherein rotational speed of the rotatable stream distributor plate is viscously dampened; and a flow rate adjustment mechanism comprising a throttle member threadably mounted for movement relative to the shaft, toward or away from an annular seat upstream of the throttle member.
Other advantages of the subject invention will become apparent from the detailed description that follows.
With reference now to
The opposite end of the shaft 26 supports three axially aligned components within the inner sleeve 18 in the sprinkler body. The first of these components is a baffle 38 (see also
Supported above the core component is an annular nozzle 48 which has an open lower end axially aligned with the flow passages in the core component. The upper end of the nozzle has a restricted orifice 50 which may extend, e.g., 360°, about the shaft 26; 180° (see especially
With reference now also to
Returning to
Turning now to
Returning to
In
In both of the illustrated embodiments, a filter element 82 (or 84) is supported by the respective sleeves 18 and 80, but is not considered part of the invention per se.
Turning now to
A shaft 100 extends from the base 88 through the nozzle orifice and into a rotor plate 102 that, like the rotor plate 22, is formed with a plurality of off-center, circumferentially arranged grooves 104 that are configured to cause the rotor plate to rotate relative to the shaft 100 when a stream emitted form the nozzle impinges on the grooves 104.
The rotor plate 102 is formed with an internal fluid chamber 108 that is adapted to be filled (or at least partially filled) with a viscous fluid 110. The shaft 100 extends through the chamber, with the remote end 112 of the shaft seated in a recess 114 formed in the cap 116. The latter is press fit within the rotor plate, seated on an annular ledge 118 and partially closing the chamber 108. The upper end of the chamber is then sealed by a cover 120. An O-ring 121 sits on an annular shoulder 123 and also engages the cover 120 to thereby seal the chamber 108, preventing leakage around the upper end 112 of the shaft 100. Note that the shaft is loosely seated in recess 114, allowing the rotor plate to rotate about the shaft.
A stator 122 is fixed to the shaft 100 and located within the chamber 108. Stator 122 engages a bearing 124, loosely fit on the shaft. An annular seal 126 is captured between the bearing 124 and a lower edge 128 of the rotor plate to thereby seal the lower end of the rotor plate against leakage from the chamber 108. Thus, in a manner similar to the earlier described embodiment, rotation of the rotor plate will be slowed by the viscous shearing of fluid between the stator 122 and the rotor plate wall forming the chamber 108.
A deflector 130, is press fit onto the shaft 100 so as to be located adjacent the nozzle outer edge 98. The deflector 130 is formed with an inwardly and downwardly tapering (as viewed in
An elastomeric shield 131 is seated in a groove 133 formed at the upper end of the deflector 130, with an angled flange 135 extending upwardly and radially outwardly toward the apex of the rotor plate. This shield serves to insure that water will not impinge upon the seal 126, and it prevents said particles from becoming jammed between the rotor plate 86 and the sprinkler body cap portion 92. This arrangement, along with the deflector 130 itself, facilitates keeping the nozzle orifice close to the shaft axis while at the same time insuring that the stream is directed to the grooves in the rotor plate.
Within the sprinkler base component 88, a spider component 138 is located on the shaft, below the deflector 130. The spider 138, best seen in
Thus, for adjustment of the flow rate, the user presses downwardly on the rotor plate, causing the teeth 164 on the inside of the rotor body cap to engage with the teeth 166 on the upper surface of the stator establishing a drive mechanism by which the shaft will rotate with the rotor plate, causing the throttle member 150 to move upwardly or downwardly on the shaft 100 depending on the direction of rotation of the rotor plate. In this manner, the flow rate of water to the nozzle may be adjusted as desired.
While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Patent | Priority | Assignee | Title |
10322423, | Nov 22 2016 | Rain Bird Corporation | Rotary nozzle |
10350619, | Feb 08 2013 | Rain Bird Corporation | Rotary sprinkler |
10507476, | Feb 07 2014 | Rain Bird Corporation | Sprinkler with brake assembly |
11059056, | Feb 28 2019 | Rain Bird Corporation | Rotary strip nozzles and deflectors |
11084051, | Feb 08 2013 | Rain Bird Corporation | Sprinkler with brake assembly |
11154877, | Mar 29 2017 | Rain Bird Corporation | Rotary strip nozzles |
11154881, | Nov 22 2016 | Rain Bird Corporation | Rotary nozzle |
11247219, | Nov 22 2019 | Rain Bird Corporation | Reduced precipitation rate nozzle |
11406999, | May 10 2019 | Rain Bird Corporation | Irrigation nozzle with one or more grit vents |
11660621, | Nov 22 2019 | Rain Bird Corporation | Reduced precipitation rate nozzle |
11933417, | Sep 27 2019 | Rain Bird Corporation | Irrigation sprinkler service valve |
12053791, | May 10 2019 | Rain Bird Corporation | Irrigation nozzle with one or more grit vents |
7611077, | Feb 08 2006 | Hunter Industries Incorporated | Adjustable flow rate, rectangular pattern sprinkler |
7703706, | Jan 12 2007 | Rain Bird Corporation | Variable arc nozzle |
8074897, | Oct 09 2008 | Rain Bird Corporation | Sprinkler with variable arc and flow rate |
8272583, | May 29 2009 | Rain Bird Corporation | Sprinkler with variable arc and flow rate and method |
8636230, | Aug 05 2010 | HUNTER INDUSTRIES, INC | Matched precipitation rate rotor-type sprinkler with selectable nozzle ports |
8651400, | Jan 12 2007 | Rain Bird Corporation | Variable arc nozzle |
8672242, | May 29 2009 | Rain Bird Corporation | Sprinkler with variable arc and flow rate and method |
8695900, | May 29 2009 | Rain Bird Corporation | Sprinkler with variable arc and flow rate and method |
8783582, | Apr 09 2010 | Rain Bird Corporation | Adjustable arc irrigation sprinkler nozzle configured for positive indexing |
8789768, | Oct 09 2008 | Rain Bird Corporation | Sprinkler with variable arc and flow rate |
8925837, | May 29 2009 | Rain Bird Corporation | Sprinkler with variable arc and flow rate and method |
9079202, | Jun 13 2012 | Rain Bird Corporation | Rotary variable arc nozzle |
9120111, | Feb 24 2012 | Rain Bird Corporation | Arc adjustable rotary sprinkler having full-circle operation and automatic matched precipitation |
9156043, | Jul 13 2012 | Rain Bird Corporation | Arc adjustable rotary sprinkler with automatic matched precipitation |
9174227, | Jun 14 2012 | Rain Bird Corporation | Irrigation sprinkler nozzle |
9205435, | Nov 04 2009 | Hunter Industries, Inc.; HUNTER INDUSTRIES, INC | Matched precipitation rate rotor-type sprinkler with selectable nozzle ports |
9295998, | Jul 27 2012 | Rain Bird Corporation | Rotary nozzle |
9314952, | Mar 14 2013 | Rain Bird Corporation | Irrigation spray nozzle and mold assembly and method of forming nozzle |
9327297, | Jul 27 2012 | Rain Bird Corporation | Rotary nozzle |
9427751, | Apr 09 2010 | Rain Bird Corporation | Irrigation sprinkler nozzle having deflector with micro-ramps |
9492832, | Mar 14 2013 | Rain Bird Corporation | Sprinkler with brake assembly |
9504209, | Apr 09 2010 | Rain Bird Corporation | Irrigation sprinkler nozzle |
9662668, | Nov 04 2009 | Hunter Industries, Inc. | Matched precipitation rate rotor-type sprinkler with selectable nozzle ports |
9700904, | Feb 07 2014 | Rain Bird Corporation | Sprinkler |
ER5773, | |||
RE42596, | Nov 03 1999 | Hunter Industries, Inc. | Micro-stream rotator with adjustment of throw radius and flow rate |
RE45263, | Nov 03 1999 | Hunter Industries Incorporated | Micro-stream rotator with adjustment of throw radius and flow rate |
Patent | Priority | Assignee | Title |
3131867, | |||
3884416, | |||
3934820, | Aug 23 1974 | Telsco Industries | Sprinkler control |
3940066, | Jul 11 1974 | The Toro Company | Pop-up sprinkler head having flow adjustment means |
3955764, | Jun 23 1975 | Telsco Industries | Sprinkler adjustment |
4119275, | Jan 31 1977 | The Toro Company | Fluid spray head and method adapted to spray specific pattern |
4154404, | Mar 11 1977 | Adjustable sprinkler head and method of making same | |
4261515, | Dec 28 1979 | Rotary sprinkler | |
4579285, | Apr 19 1984 | HUNTER INDUSTRIES, INC , A DELAWARE CORPORATION; HUNTER INDUSTRIES, INC | Adjustable sprinkler system |
4634052, | Nov 05 1984 | The Toro Company; TORO COMPANY, THE, A DE CORP | Adjustable arc sprinkler head |
4660766, | Sep 18 1985 | Nelson Irrigation Corporation | Rotary sprinkler head |
4815662, | Nov 23 1987 | HUNTER INDUSTRIES, INC , A DELAWARE CORPORATION | Stream propelled rotary stream sprinkler unit with damping means |
4842201, | Jun 26 1986 | HUNTER INDUSTRIES, INC , A DELAWARE CORPORATION | Rotary stream sprinkler unit |
4850532, | Aug 03 1988 | WAIT, THOMAS R | Process for sprinkling lawns |
4867379, | Jun 26 1986 | HUNTER INDUSTRIES, INC , A DELAWARE CORPORATION | Rotary stream sprinkler unit |
4898332, | Jun 26 1986 | HUNTER INDUSTRIES, INC , A DELAWARE CORPORATION | Adjustable rotary stream sprinkler unit |
4932590, | Aug 07 1989 | HUNTER INDUSTRIES, INC , A DELAWARE CORPORATION | Rotary stream sprinkler unit with rotor damping means |
4944456, | Apr 29 1988 | , | Rotary sprinkler |
4967961, | Jun 26 1986 | HUNTER INDUSTRIES, INC , A DELAWARE CORPORATION | Rotary stream sprinkler unit |
4971250, | Aug 07 1989 | HUNTER INDUSTRIES, INC , A DELAWARE CORPORATION | Rotary stream sprinkler unit with rotor damping means |
4986474, | Aug 07 1989 | Nelson Irrigation Corporation | Stream propelled rotary pop-up sprinkler |
5031840, | Sep 13 1989 | TORO COMPANY, THE | Adjustable radius sprinkler nozzle |
5058806, | Jan 16 1990 | Hunter Industries Incorporated | Stream propelled rotary pop-up sprinkler with adjustable sprinkling pattern |
5083709, | Aug 16 1990 | Lawn irrigation nozzle | |
5098021, | Apr 30 1990 | Oscillatable nozzle sprinkler with integrated adjustable arc and flow | |
5148990, | Jun 29 1990 | Adjustable arc spray and rotary stream sprinkler | |
5226602, | Sep 13 1989 | The Toro Company | Adjustable radius sprinkler nozzle |
5288022, | Nov 08 1991 | Hunter Industries Incorporated | Part circle rotator with improved nozzle assembly |
5360167, | Sep 13 1989 | TORO COMPANY, THE | Adjustable radius sprinkler nozzle |
5556036, | Oct 26 1994 | Hunter Industries Incorporated | Adjustable arc spinkler nozzle |
5588594, | Feb 03 1995 | Adjustable arc spray nozzle | |
5647541, | Apr 28 1995 | Water flow control device for rotary sprinkler | |
5718381, | Aug 24 1994 | Gardena Kress + Kastner GmbH | Sprinkler for discharging a fluid |
5762270, | Dec 08 1995 | Hunter Industries Incorporated | Sprinkler unit with flow stop |
5823440, | Apr 23 1996 | Hunter Industries, Incorporated | Rotary sprinkler with velocity controlling valve |
5927607, | Feb 26 1998 | Hunter Industries Incorporated | Sprinkle with velocity control disc |
6244521, | Nov 03 1999 | Hunter Industries Incorporated | Micro-stream rotator with adjustment of throw radius and flow rate |
6499672, | Nov 03 1999 | Hunter Industries Incorporated | Micro-stream rotator with adjustment of throw radius and flow rate |
7159795, | Mar 28 2001 | Hunter Industries Incorporated | Adjustable arc, adjustable flow rate sprinkler |
RE32386, | Mar 30 1973 | The Toro Company | Sprinkler systems |
RE33823, | Apr 24 1989 | Nelson Irrigation Corporation | Rotary sprinkler head |
Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Dec 27 2004 | Hunter Industries Incorporated | (assignment on the face of the patent) | / | |||
Jun 22 2007 | Nelson Irrigation Corporation | Hunter Industries Incorporated | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 019699 | /0442 |
Date | Maintenance Fee Events |
May 03 2010 | M1552: Payment of Maintenance Fee, 8th Year, Large Entity. |
Date | Maintenance Schedule |
Jul 22 2011 | 4 years fee payment window open |
Jan 22 2012 | 6 months grace period start (w surcharge) |
Jul 22 2012 | patent expiry (for year 4) |
Jul 22 2014 | 2 years to revive unintentionally abandoned end. (for year 4) |
Jul 22 2015 | 8 years fee payment window open |
Jan 22 2016 | 6 months grace period start (w surcharge) |
Jul 22 2016 | patent expiry (for year 8) |
Jul 22 2018 | 2 years to revive unintentionally abandoned end. (for year 8) |
Jul 22 2019 | 12 years fee payment window open |
Jan 22 2020 | 6 months grace period start (w surcharge) |
Jul 22 2020 | patent expiry (for year 12) |
Jul 22 2022 | 2 years to revive unintentionally abandoned end. (for year 12) |