US3792588A - Trickle irrigation unit - Google Patents

Trickle irrigation unit Download PDF

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Publication number
US3792588A
US3792588A US00253452A US3792588DA US3792588A US 3792588 A US3792588 A US 3792588A US 00253452 A US00253452 A US 00253452A US 3792588D A US3792588D A US 3792588DA US 3792588 A US3792588 A US 3792588A
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United States
Prior art keywords
unit
groove
continuous pathway
groove formation
tubular member
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Expired - Lifetime
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US00253452A
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English (en)
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Y Gilaad
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Individual
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Individual
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Priority claimed from IL36901A external-priority patent/IL36901A/xx
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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G25/00—Watering gardens, fields, sports grounds or the like
    • A01G25/02—Watering arrangements located above the soil which make use of perforated pipe-lines or pipe-lines with dispensing fittings, e.g. for drip irrigation
    • A01G25/023—Dispensing fittings for drip irrigation, e.g. drippers
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G25/00—Watering gardens, fields, sports grounds or the like
    • A01G25/006—Tubular drip irrigation dispensers mounted coaxially within water feeding tubes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion

Definitions

  • the present invention relates to irrigation systems, and more particularly to so called'drip, or trickle, irrigation units.
  • the dispensing or emitting unit (as it is sometimes called) is destined to ensure a slow trickle or driplike rate of discharge of water through the said unit.
  • the water is supplied to the dispensing or emitting units through a continuous pipeline, which may be a permanent rigid metal or plastic line or a flexible plastic hose which can be installed at a place and removed at will to be set up at another point.
  • the emitting units are inserted in the line at regular intervals, or are attached thereto at such intervals so that water being conducted through the pipeline trickles or drips out at the points where the emitting units are provided, while the greater part of the water continues in the pipeline to the next dispensing or emitting unit, where again a small quantity of water is continuously dispensed in a trickle or driplike fashion, and so on to the next dispensing unit.
  • the unit should not clog easily, i.e., there should be no necessity to use water of high purity, as this in turn would require complicated and expensive filtering means;
  • the unit should be sufficiently small so that it can be mounted and transported easily.
  • units comprising substantially an outer tubular member and inner tubular member, oneof the members having formed thereon a continuous groove, which together with the complementary surface of the other member defines a continuously direction-changing water conduit and an inlet or outlet therefor.
  • the unit may be part of the water supply line or a separate unit to be connected to the line.
  • the conduit groove which is preferably helical, follows the same direction as the pipe unit.
  • trickle-feed unit which comprises an inner and an outer tubular member, wherein one of these members has formed in its surface a continuous groove extending altematingly from one end to the other end of the saidmember and vice versa, the groove being connected with the interior of the inner tubular member at one end and having an outlet at its opposite end.
  • An object of the present invention is to provide an emitting or dispensing unit as small as possible, without unduly decreasing the cross-section of the flow area in the groove, but at the same time reducing the pressure from the head as much as possible so as to attain an emission of irrigating water at very low flow rates.
  • an irrigation trickler unit for connection to a pipe line comprising an outer tubular member and an inner tubular member disposed tightly therein, the surfacr of at least one of the members having a groove formation which '2 forms, with the continuous surface of the other tubular member, a continuous pathway including a plurality of axially-extending runs serially connected together at their ends so that the continuous pathway extends back and forth in an axial direction from one end to the other end of the tubular members, with each axial run spaced in the circumferential direction from the succeeding one.
  • the groove formation defining each of the axial runs includes a plurality of bends extending transversely of the axial run.
  • Such bends form sharp turns which cause a change in direction of the flow of the water, each bend having a radius of curvature no greater than the width of the cross-section of the groove thereat.
  • the resistance of flow increases along the pathway, and therefore the rate of water discharge at the open end of the unit is reduced to a great extent.
  • the groove formation forming the continuous pathway is defined by a plurality of parallelridges extending axially of the tubular members and spaced circumferentially from each other, each of the ridges including a plurality of spaced ribs extending transverselyof the ridges, the
  • the groove formation forming the continuous pathway is defined by a plurality of parallel grooves extending axially of the tubular members and spaced circumferentially from each other, each of the grooves including narrow cross-section portions, the junctions of which form the flow-direction-changing bends and turns.
  • a discharge unit of this type may be installed by being inserted at intervals into the pipeline conducting the water (or fertilizing solution), or it may be set on the pipeline and flow-connected with it.
  • the inner member is usually in-line with the sections of the pipeline and the liquid carried therein flows to its greater part through such inner tubular member, only part of the flow being deviated to the groove provided in the unit, to be emitted there from in the drip-or tricklelike manner.
  • the unit is set. on the pipeline and its emitting groove is connected therewith.
  • the unit may be smaller, i.e., of shorter length, and the grooves may be wider as compared with the grooves in the known units. For this reason the water need not be filtered before entering and it does not matter if it carries impurities up to a certain size. Thus, passing the water through. a simple strainer should be sufficient.
  • the water has to be filtered by passing it through a 200 mesh filtering screen.
  • a simple strainer retaining foreign bodies above one-half mm diameter will suflice.
  • the unit according to the invention may be used not only for pure irrigation purposes but the liquid conducted in the respective'pipeline and emitted through the unit may contain fertilizers or other matter which it might be desirable to conduct to the soil or to the roots of plants.
  • the emitter unit according to the present invention is not restricted to having one discharge opening only. On the contrary, it can be easily so constructed that there are several outlets, e.g., 2, 3, 4 or even more. In this case the terminal end of said groove is provided with the desired number of outlets.
  • said grooves may be also so designed that at their end they are not provided with an outlet but they proceed to a further groove which lengthens the travel of the water and increases the frictional resistance, which results in a slow dripping of the water.
  • the size of the angles of the bends is not a critical feature of the present invention, although an angle making a substantially complete U-turn is preferred. There are a great number of probabilities, all of them being within the scope of the present invention.
  • the emitter unit may be made of any of the conventional materials used for the manufacture of irrigation emitter units, e.g., plastic materials, metals, etc.
  • FIG. 1 is a perspective view of one practical form of the new emitter unit, drawn on an enlarged scale;
  • FIG. 2 is a sectional view of the same unit as inserted into a pipeline
  • FIG. 3 schematically shows the positioning of the emitter units within the pipeline
  • FIG. 3a schematically illustrates the positioning of the units on a pipeline
  • FIGS. 4, 5, 6, 7, 8 and 9 indicate schematically further possible forms of the groove within one of the tubular members.
  • the new trickle emitter unit comprises an inner tubular member I which at both of its ends is provided with appropriately shaped end pieces la and lb for the connection to sections of a pipeline indicated by the numeral 2 in FIG. 2.
  • the outside of the member 1 is provided with a continuous mazelike groove which extends from one end of the member to the opposite end and from here back to the first named end and so on. This groove is in communication with the interior of member I.
  • a number of radial holes or slots 4 which lead from the interior of member 1 to the outside, i.e., into the confines of the said continuous groove.
  • the said holes 4 lead into a circumferential depression 5 which is defined by two ring-shaped ribs 6.
  • the diameter of holes 4 or the width of slots 4, as the case may be, is smaller than the width of the depression 5 and the continuous mazelike groove.
  • tubular member I On the outside of the tubular member I extend a number of ridges 7 in axial direction from which branch off laterally extending short ribs 8; between 4 them these ribs and ridges form the said continuous mazelike groove the extension of which can be followed in the drawings.
  • a short slot or nick 5' leads into the meandering groove as indicated by the arrows in FIG. L
  • the groove progresses in the axial direction, continuously turning to the right and to the left about the branched ridges 8 until the groove arrives at the lower end of the FIG. I to the bend wherein its direction is reversed, i.e., redirected to the upper direction.
  • FIG. 3 The arrangement in actual use is illustrated by FIG. 3.
  • the pipeline is indicated by the numeral while the units are indicated by the numeral 200.
  • a number of trickle emitting units may be inserted at whatever intervals from one another. Water or fertilizing solution or whatever else is conducted through the said pipeline and the liquid is continuously and slowly emitted at every one of the said units, the initial pressure from the head being of no or little influence on the emission rate.
  • the openings 4 may be elongated slots. Instead of providing both connections la and lb at the inner member, one might be on the inner, and one on the outer member.
  • the continuous maze formed by the grooveneed not be of the form shown in FIG. l and 2; it may be given any other configuration, as exemplified by the examples of FIGS. 4 8.
  • the said groove may be of any configuration, provided that is continues toand fro from one end of the unit to the other and that the sections of the groove intermediate the two ends aresubdivided by bends and turns into the circumferential direction of the unit alternatingly .to one side and the other, and that the bends be substantially of a radius equal to or smaller than the width of the cross-section of the groove.
  • the change of direction of the flow may also be attained by providing the continuous groove with widenings arranged at distances along the groove, i.e., alternating narrow portions of the groove with wider ones. This is shown schematically in FIG. 9. A portion of the groove is indicated by the numeral 20. The groove has alternating narrow portions 21 and wider ones 22. Water flowing through such a groove and entering from a narrow portion into a wide one will spread in the wider portion, as indicated by the small arrows in FIG. 9, when passing from the wide, into the narrow portion the flow will again become constricted. In other words, the sharp corners at the transition from narrow to wide and from wide to narrow position change the direction of flow just as the bends described do. It is possible to improve this effect by providing boss like baffles in the centre of the side portions, as indicated by the broken lines.
  • the unit as described in this specification and as shown in the drawings comprises two tubular members, it would be within the scope of the invention to compose the unit of two or more flat prism shaped bodies, which between them define the continuous groove extending in a mazelike manner.
  • An irrigation trickler unit for connection to a pipeline, comprising, an outer tubular member and an inner tubular member disposed tightly therein, a surface of at least one of said members having a groove formation which forms, with the contiguous surface of the other tubular member, a continuous pathway including a plurality of axially-extending runs, serially connected at their ends so that the continuous pathway extends back and forth in an axial direction from one end to the other end of the tubular members with each axial run spaced in the circumferential direction from the succeedin g one, the groove formation defining each of said axial runs including a plurality of flow-directionchanging bends and turns extending transversely of the axial run, each bend having a radius of curvature no greater than the width of the cross-section of the groove pathway thereat, said tubular members including an inlet opening communicating with one end of the continuous pathway and an outlet opening communicating with the other end of the continuous pathway.
  • said groove formation forming said continuous pathway is defined by a plurality of parallel ridges extending axially of said tubular members and space circumferentially from each other, each of said ridges including a plurality of spaced ribs extendings transversely of the ridge, the ribs of one ridge extending into the space between the ribs of the adjacent ridge.
  • a unit as defined in claim 1, wherein said groove formation forming said continuous pathway is defined by a plurality of parallel grooves extending axially of the tubular members and spaced circumferentially from each other, each of the grooves including narrow cross-section portions forming the flow-directionchanging bends and turns.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Environmental Sciences (AREA)
  • Soil Sciences (AREA)
  • Nozzles (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
US00253452A 1971-05-23 1972-05-15 Trickle irrigation unit Expired - Lifetime US3792588A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL36901A IL36901A (en) 1971-05-23 1971-05-23 Irrigation emitter unit
IL3690172 1972-01-30

Publications (1)

Publication Number Publication Date
US3792588A true US3792588A (en) 1974-02-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
US00253452A Expired - Lifetime US3792588A (en) 1971-05-23 1972-05-15 Trickle irrigation unit

Country Status (11)

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US (1) US3792588A (enrdf_load_stackoverflow)
JP (1) JPS549325B2 (enrdf_load_stackoverflow)
AT (1) AT321633B (enrdf_load_stackoverflow)
AU (1) AU458219B2 (enrdf_load_stackoverflow)
CA (1) CA950005A (enrdf_load_stackoverflow)
DE (1) DE2224320C2 (enrdf_load_stackoverflow)
ES (1) ES402875A1 (enrdf_load_stackoverflow)
FR (1) FR2138786B1 (enrdf_load_stackoverflow)
GB (1) GB1392000A (enrdf_load_stackoverflow)
IT (1) IT974451B (enrdf_load_stackoverflow)
ZA (1) ZA723013B (enrdf_load_stackoverflow)

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3851896A (en) * 1973-09-24 1974-12-03 D Olson In-line emitter for hose
US3856333A (en) * 1972-12-07 1974-12-24 Johns Manville Drip irrigator device
US3870236A (en) * 1973-03-14 1975-03-11 Sahagun Barragan Jaime Dripping irrigation tubing
US3876235A (en) * 1974-07-10 1975-04-08 Atomic Energy Commission Failure limiting pipe expansion joint
US3968930A (en) * 1975-03-31 1976-07-13 Hendrickson Ralph L Drip irrigation device
US4215822A (en) * 1974-08-14 1980-08-05 Hydro-Plan Engineering Ltd. Drip level irrigation
US4722481A (en) * 1986-05-05 1988-02-02 Jack Lemkin Adjustable drip emitter
US4960584A (en) * 1988-10-24 1990-10-02 Wade Manufacturing Co. Adjustable emitter for heap leach mining percolation system and method
US5031837A (en) * 1990-01-02 1991-07-16 Raindrip, Inc. Drip irrigator
US5106021A (en) * 1987-06-03 1992-04-21 U.S. Farm Products Limited Irrigation device
US5137216A (en) * 1990-04-03 1992-08-11 Raindrip, Inc. Multiple unit drip irrigator
US5520339A (en) * 1994-12-13 1996-05-28 Kuo; Ming-Shish Multi-stage dripping tube for irrigation
US6817548B2 (en) * 2001-09-05 2004-11-16 R.M. Wade & Co. Fluid distribution emitter and system
US20050270343A1 (en) * 2002-10-25 2005-12-08 Malik Craig L Labyrinth seal structure
CN101803553A (zh) * 2010-04-26 2010-08-18 西北农林科技大学 一种螺纹迷宫流道式涌泉根灌灌水器
US20130068321A1 (en) * 2009-02-25 2013-03-21 Lavelle Industries, Inc. Water saver fill valve and assembly
US20150091293A1 (en) * 2011-06-24 2015-04-02 The Boeing Company Apparatus for preventing spark propagation
CN104663375A (zh) * 2015-01-31 2015-06-03 西北农林科技大学 一种根灌灌水装置
US10330559B2 (en) 2014-09-11 2019-06-25 Rain Bird Corporation Methods and apparatus for checking emitter bonds in an irrigation drip line
US10375904B2 (en) 2016-07-18 2019-08-13 Rain Bird Corporation Emitter locating system and related methods
US10420293B2 (en) 2013-10-22 2019-09-24 Rain Bird Corporation Methods and apparatus for transporting emitters and/or manufacturing drip line
US10440903B2 (en) 2012-03-26 2019-10-15 Rain Bird Corporation Drip line emitter and methods relating to same
US10626998B2 (en) 2017-05-15 2020-04-21 Rain Bird Corporation Drip emitter with check valve
US10631473B2 (en) 2013-08-12 2020-04-28 Rain Bird Corporation Elastomeric emitter and methods relating to same
USD883048S1 (en) 2017-12-12 2020-05-05 Rain Bird Corporation Emitter part
US10842090B2 (en) 2006-02-22 2020-11-24 Rain Bird Corporation Drip emitter
US11051466B2 (en) 2017-01-27 2021-07-06 Rain Bird Corporation Pressure compensation members, emitters, drip line and methods relating to same
US11185021B2 (en) 2012-03-26 2021-11-30 Rain Bird Corporation Elastomeric emitter and methods relating to same
EP4218402A1 (en) * 2022-01-28 2023-08-02 Irrigatia Limited Dripper apparatus and associated irrigation system for use therewith
USD1016218S1 (en) * 2021-07-16 2024-02-27 Solidrip Ltd. Irrigation unit
US11985924B2 (en) 2018-06-11 2024-05-21 Rain Bird Corporation Emitter outlet, emitter, drip line and methods relating to same
US12207599B2 (en) 2021-10-12 2025-01-28 Rain Bird Corporation Emitter coupler and irrigation system
US12297634B2 (en) 2020-02-07 2025-05-13 Lavelle Industries, Inc. Adjustable toilet flapper valve assembly

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2229347A1 (en) * 1973-05-18 1974-12-13 Neoplast Ind Water drop dispenser for irrigation system - water escapes along square section thread on outside of tube
RO60105A2 (enrdf_load_stackoverflow) * 1973-07-23 1976-08-15
IL44502A (en) * 1974-03-26 1979-10-31 Lego Lemelstrich Ltd Flow restrictor for irrigation systems
IL45211A (en) * 1974-07-08 1976-11-30 Eckstein Gershon Irrigation pipe with dripper units and method of its manufacture
JPS51107644A (ja) * 1975-03-10 1976-09-24 Sahagan Baaragan Jeimu Tekikashikikashigaiyokan
JPS5424735A (en) * 1977-07-28 1979-02-24 Toyo Soda Mfg Co Ltd Irrigation pipe and its manufacture
IL55533A0 (en) * 1978-09-07 1978-12-17 Lego Lemelstrich Ltd Improved drip emitter
HU177567B (en) * 1978-11-15 1981-11-28 Budapesti Mueszaki Egyetem Sprinkler
US4600152A (en) * 1983-06-06 1986-07-15 Samuel Samueli Multiple intersection dripper
IL70646A (en) * 1984-01-09 1990-07-26 Naan Mech Works Vortex labyrinth insert particularly for drip irrigation pipes
FR2605492B1 (fr) * 1986-10-28 1989-05-26 Testa Jean Pierre Distributeur d'eau sans pression pour arrosage goutte a goutte
JPS63133353U (enrdf_load_stackoverflow) * 1987-02-25 1988-08-31
EP0365639A4 (en) * 1988-04-12 1990-09-26 Peter John Snelling Drip irrigation tube and method of manufacturing same
ES2161605B1 (es) * 1997-10-20 2002-08-01 Manzaneque Manuel Valera Nuevo sistema de insercion de goteros interlinea en tuberias de polietileno.

Citations (7)

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US1335899A (en) * 1920-01-12 1920-04-06 Kahlenberg Bros Co Fluid-filter
US2981072A (en) * 1957-02-21 1961-04-25 Philip J Brewington Drain pipe joint
US3403519A (en) * 1964-03-06 1968-10-01 William F. Balko Irrigation conduit assembly
US3420064A (en) * 1966-02-17 1969-01-07 Ischajahu Blass Irrigation dripper unit and pipe system
US3426544A (en) * 1967-11-24 1969-02-11 Robert Curtis Aqua-tube sub-surface irrigation
US3521753A (en) * 1968-04-30 1970-07-28 Werner P Schoening Filtering and heating of liquids by use of a flexible cellular blanket
US3604728A (en) * 1969-01-03 1971-09-14 Blass Symcha Drip level irrigation

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DE830142C (de) * 1950-10-21 1952-01-31 Martin Vermoehlen Stossdaempfer fuer durch Fluessigkeit oder Gas belastete Membrane
GB1426716A (en) * 1972-03-10 1976-03-03 Conex Sanbra Ltd Convector space heating or cooling apparatus

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1335899A (en) * 1920-01-12 1920-04-06 Kahlenberg Bros Co Fluid-filter
US2981072A (en) * 1957-02-21 1961-04-25 Philip J Brewington Drain pipe joint
US3403519A (en) * 1964-03-06 1968-10-01 William F. Balko Irrigation conduit assembly
US3420064A (en) * 1966-02-17 1969-01-07 Ischajahu Blass Irrigation dripper unit and pipe system
US3426544A (en) * 1967-11-24 1969-02-11 Robert Curtis Aqua-tube sub-surface irrigation
US3521753A (en) * 1968-04-30 1970-07-28 Werner P Schoening Filtering and heating of liquids by use of a flexible cellular blanket
US3604728A (en) * 1969-01-03 1971-09-14 Blass Symcha Drip level irrigation

Cited By (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3856333A (en) * 1972-12-07 1974-12-24 Johns Manville Drip irrigator device
US3870236A (en) * 1973-03-14 1975-03-11 Sahagun Barragan Jaime Dripping irrigation tubing
US3851896A (en) * 1973-09-24 1974-12-03 D Olson In-line emitter for hose
US3876235A (en) * 1974-07-10 1975-04-08 Atomic Energy Commission Failure limiting pipe expansion joint
US4215822A (en) * 1974-08-14 1980-08-05 Hydro-Plan Engineering Ltd. Drip level irrigation
US3968930A (en) * 1975-03-31 1976-07-13 Hendrickson Ralph L Drip irrigation device
US4722481A (en) * 1986-05-05 1988-02-02 Jack Lemkin Adjustable drip emitter
US5106021A (en) * 1987-06-03 1992-04-21 U.S. Farm Products Limited Irrigation device
US4960584A (en) * 1988-10-24 1990-10-02 Wade Manufacturing Co. Adjustable emitter for heap leach mining percolation system and method
US5031837A (en) * 1990-01-02 1991-07-16 Raindrip, Inc. Drip irrigator
US5137216A (en) * 1990-04-03 1992-08-11 Raindrip, Inc. Multiple unit drip irrigator
US5520339A (en) * 1994-12-13 1996-05-28 Kuo; Ming-Shish Multi-stage dripping tube for irrigation
US6817548B2 (en) * 2001-09-05 2004-11-16 R.M. Wade & Co. Fluid distribution emitter and system
AU2002339896B2 (en) * 2001-09-05 2008-04-03 R.M. Wade & Co. Fluid distribution emitter and system
US20050270343A1 (en) * 2002-10-25 2005-12-08 Malik Craig L Labyrinth seal structure
US7465040B2 (en) * 2002-10-25 2008-12-16 Hewlett-Packard Development Company, L.P. Labyrinth seal structure with redundant fluid flow paths
US10842090B2 (en) 2006-02-22 2020-11-24 Rain Bird Corporation Drip emitter
US20130068321A1 (en) * 2009-02-25 2013-03-21 Lavelle Industries, Inc. Water saver fill valve and assembly
US9062795B2 (en) * 2009-02-25 2015-06-23 Lavelle Industries, Inc. Water saver fill valve and assembly
CN101803553A (zh) * 2010-04-26 2010-08-18 西北农林科技大学 一种螺纹迷宫流道式涌泉根灌灌水器
US20150091293A1 (en) * 2011-06-24 2015-04-02 The Boeing Company Apparatus for preventing spark propagation
US10112724B2 (en) * 2011-06-24 2018-10-30 The Boeing Company Apparatus for preventing spark propagation
US11185021B2 (en) 2012-03-26 2021-11-30 Rain Bird Corporation Elastomeric emitter and methods relating to same
US10440903B2 (en) 2012-03-26 2019-10-15 Rain Bird Corporation Drip line emitter and methods relating to same
US10631473B2 (en) 2013-08-12 2020-04-28 Rain Bird Corporation Elastomeric emitter and methods relating to same
US10420293B2 (en) 2013-10-22 2019-09-24 Rain Bird Corporation Methods and apparatus for transporting emitters and/or manufacturing drip line
US12174091B2 (en) 2014-09-11 2024-12-24 Rain Bird Corporation Methods and apparatus for checking emitter bonds in an irrigation drip line
US11422055B2 (en) 2014-09-11 2022-08-23 Rain Bird Corporation Methods and apparatus for checking emitter bonds in an irrigation drip line
US10330559B2 (en) 2014-09-11 2019-06-25 Rain Bird Corporation Methods and apparatus for checking emitter bonds in an irrigation drip line
CN104663375A (zh) * 2015-01-31 2015-06-03 西北农林科技大学 一种根灌灌水装置
US10750684B2 (en) 2016-07-18 2020-08-25 Rain Bird Corporation Emitter locating system and related methods
US10375904B2 (en) 2016-07-18 2019-08-13 Rain Bird Corporation Emitter locating system and related methods
US11051466B2 (en) 2017-01-27 2021-07-06 Rain Bird Corporation Pressure compensation members, emitters, drip line and methods relating to same
US12041889B2 (en) 2017-01-27 2024-07-23 Rain Bird Corporation Pressure compensation members, emitters, drip line and methods relating to same
US10626998B2 (en) 2017-05-15 2020-04-21 Rain Bird Corporation Drip emitter with check valve
USD883048S1 (en) 2017-12-12 2020-05-05 Rain Bird Corporation Emitter part
USD978637S1 (en) * 2017-12-12 2023-02-21 Rain Bird Corporation Emitter part
US11985924B2 (en) 2018-06-11 2024-05-21 Rain Bird Corporation Emitter outlet, emitter, drip line and methods relating to same
US12342766B2 (en) 2018-06-11 2025-07-01 Rain Bird Corporation Emitter outlet, emitter, drip line and methods relating to same
US12297634B2 (en) 2020-02-07 2025-05-13 Lavelle Industries, Inc. Adjustable toilet flapper valve assembly
USD1016218S1 (en) * 2021-07-16 2024-02-27 Solidrip Ltd. Irrigation unit
US12207599B2 (en) 2021-10-12 2025-01-28 Rain Bird Corporation Emitter coupler and irrigation system
EP4218402A1 (en) * 2022-01-28 2023-08-02 Irrigatia Limited Dripper apparatus and associated irrigation system for use therewith

Also Published As

Publication number Publication date
AU458219B2 (en) 1975-02-20
CA950005A (en) 1974-06-25
ZA723013B (en) 1973-05-30
FR2138786A1 (enrdf_load_stackoverflow) 1973-01-05
AU4236072A (en) 1973-11-22
JPS4840240A (enrdf_load_stackoverflow) 1973-06-13
DE2224320C2 (de) 1985-08-01
DE2224320A1 (de) 1972-12-07
GB1392000A (en) 1975-04-23
AT321633B (de) 1975-04-10
FR2138786B1 (enrdf_load_stackoverflow) 1977-04-01
JPS549325B2 (enrdf_load_stackoverflow) 1979-04-24
ES402875A1 (es) 1975-05-16
IT974451B (it) 1974-06-20

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