WO2006030419A2 - Distributeur de gouttes a deux composants et son procede de production - Google Patents

Distributeur de gouttes a deux composants et son procede de production Download PDF

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Publication number
WO2006030419A2
WO2006030419A2 PCT/IL2005/000964 IL2005000964W WO2006030419A2 WO 2006030419 A2 WO2006030419 A2 WO 2006030419A2 IL 2005000964 W IL2005000964 W IL 2005000964W WO 2006030419 A2 WO2006030419 A2 WO 2006030419A2
Authority
WO
WIPO (PCT)
Prior art keywords
dripper
component
internal
manufacturing
external
Prior art date
Application number
PCT/IL2005/000964
Other languages
English (en)
Other versions
WO2006030419A3 (fr
Inventor
Zvika Einav
Original Assignee
Plastro Irrigation Systems Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Plastro Irrigation Systems Ltd. filed Critical Plastro Irrigation Systems Ltd.
Publication of WO2006030419A2 publication Critical patent/WO2006030419A2/fr
Publication of WO2006030419A3 publication Critical patent/WO2006030419A3/fr

Links

Classifications

    • 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
    • A01G25/02—Watering arrangements located above the soil which make use of perforated pipe-lines or pipe-lines with dispensing fittings, e.g. for drip irrigation
    • A01G25/026—Apparatus or processes for fitting the drippers to the hoses or the pipes

Definitions

  • This invention relates to the field of drip emitters in general, and in particular to the methods for manufacturing drip emitters suitable for being installed within a tube, while the tube is being manufactured, and the means used for manufacturing such drip emitters.
  • Drip emitters for irrigation are in regular use and well known for agricultural irrigating by dripping water drops.
  • a drip emitter might be described as a device that accepts water at a certain pressure.
  • the dripper reduces the water pressure by passing the flow of the water through a mechanism that presents resistance to the flow, for example - driving the water flow through a flow passage formed with in labyrinth (maze) of sharpened barriers (herein after "baffles”) positioned in the water flow path.
  • the baffles' labyrinth interferes with the flow and reduces the water pressure.
  • Dripper units might be cylindrical, and then they are secured to the inner wall of the tube along all their circumference area (see for example Eckstein's US
  • the drippers have to conform to severe standards regulating the uniformity of the water throughput exiting from them.
  • the drippers have to present high capability to withstand clogging that might be the result of various contamination items common in the water supply.
  • the dripper body In integral drippers' tube, the dripper body has to adhere strongly to the tubes inner surface.
  • Each dripper is made of a single component, manufactured separately in an injection process, and formed with a labyrinth of sharpened (pointed) baffles. The drippers are installed one after the other inside the extruded tube during the run of the extruding process.
  • the baffle's labyrinth is led to direct flush contact with the inner wall of the tube, so that the inner surface of the tube is used for securing the labyrinth to it and forming a boundary encompassing the flow channel that is formed within the dripper.
  • securing the dripper body to the inner wall of the tube being extruded is done by exerting force combined with exploiting the heat of the tube's extruded plastic material from which the tube is being manufactured, for heat welding the dripper - including the dripper's baffles labyrinth to the inner wall of the extruded tube, that - this is to be remembered, keeps moving all the time as part of its continuos production process.
  • integral dripping tubes can be found, for example, at the site of the applicant, at the address WWW.plastro .com (see there - for example, the product Hydrodrip Super).
  • Enhanced water turbulence prevents deposition of contamination particles hovering in the water, a deposition that might lead to clogging and blocking of the passages in the labyrinth. Creation of enhanced turbulence enables, in addition, to increase the dimensions of the flow passages in the labyrinth without suffering a reduction in the required throughput of the drippers.
  • the thickness of the extruded tube influences the bonding process.
  • the extruded tube might be of a very thin thickness (say 0.1 to 0.4 mm).
  • a problem of lacking sufficient heat energy as required for achieving a good bond between the tube's material and the body of the dripper installed in it arises.
  • the manufacture must then compensate for this heat deficiency by exerting increased pressure on the contact between the dripper's body and the wall of the continually moving wall of the tube. Excess pressure might result in a failure of the bonding.
  • the wall thickness of the extruded tube is relatively large, a problem of excess heat develops. Excess heat might lead to melting of the ends of the labyrinth's thin baffles.
  • the manufacturers do not design a specific dripper body to match a specific tube wall thickness, and as a inherent result - manufacturers market integral dripping tubes in accordance with the results actually obtained in the manufacturing process, due to the insertion of the same dripper body in different tubes of varying wall thickness.
  • the same dripper body provides different throughputs when installed in tubes differing in their wall thickness.
  • a single component dripper formed with a pointed baffles labyrinth it is the labyrinth that is brought to direct contact with the hot material of the tube that has just been extruded (and that moves all the time). This excess material slides into the designed flow passages between the baffles of the labyrinth. Accumulation of this excess material in the flow passage, reduces its dimensions and later might block contaminants found in the water, leading to their deposition on the labyrinth and clog the dripper entirely.
  • the present invention constitutes a dual component dripper, one that is suitable to function in an integral dripping tube.
  • the dripper a subject matter of the present invention, is suitable for being installed within a tube while it is being manufactured and features low sensitivity to the tube's production conditions.
  • the dripper is suitable for mounting into tubes of different wall thickness, without its throughput being impaired. Integrating these drippers into the tube, does not require marked expertise nor experience.
  • a dripper in accordance with the present invention comprises an internal component that includes a labyrinth with its flow passage in it and an external component that includes an exit pool formed at its outer wall.
  • a dripper in accordance with the present invention is characterized by having its internal component adjusted through its dimension to be installed by a linear motion into its external component, so that when the internal component is coupled into (within) the external component, the flow passage in the labyrinth would be connected to a flow passage to the exit pool.
  • the present invention constitutes an integral dripping tube in which dual component drippers as defined above are installed.
  • the present invention constitutes means for manufacturing the dual component dripper as cited earlier.
  • the manufacturing means enables the assembly of the drippers already within the injection mold in which their components are produced side by side (hereinafter - "in tandem"), so that no extra costs results due to the dripper being a double components device (which might have required an advance assembly operation).
  • the means for manufacturing the drippers comprises an injection mold formed with at least one cavity meant for production by injection of the dripper two components in tandem (side by side).
  • the mold includes, in addition, means for assembling the dripper two components one into the other by a linear movement whose direction is essentially perpendicular to that of the opening of the mold while the two components are still located in the cavity.
  • the mold includes means for extracting the already assembled dripper from the cavity.
  • the present invention constitutes a method for manufacturing dual component drippers as cited earlier, that includes the stages of forming the dripper's two components in tandem (side by side), by injecting the plastic into only one injection mold and assembling the two components of the dripper one unto the other, in a linear movement carried out in a direction that is essentially perpendicular to the direction of opening the injection mold while the two components are in the injection mold and finally - extracting the already assembled dripper from within the injection mold.
  • Drawing No. 1 presents an exploded view of an example of a preferred embodiment of a dual component dripper in accordance with the invention.
  • Drawing No. 2 constitutes a perspective view of the example dual component dripper whose components are illustrated in drawing No. 1, in the assembled state.
  • Drawing No. 3 constitutes a cross section perspective view of the example dual component dripper whose components are illustrated in drawing No. 2.
  • Drawing No. 4 constitutes a cross section perspective view of an integral dripping tube in which dual component drippers of the type illustrated in drawings No. 1 to 3 were installed.
  • Drawings No. 5 constitutes a schematic illustration of an injection mold suitable for manufacturing the dual component dripper illustrated in drawings No. l to 3.
  • Drawing numbers No. 6 to 13 constitute schematic illustrations of the different manufacturing stages of the dripper components illustrated in drawings No. 1 to 3 - their assembly one to another, wherein all is accomplished in a mold of the type illustrated in drawing No. 5, and finally the extraction of the already assembled dual component emitter from within the mold.
  • drawings No. 1 to 3 depict first an exploded view of an example of a dual component dripper 10 in accordance with the invention, a perspective view of an assembled dual component dripper 10 and a cross section perspective view of an assembled dual component dripper 10.
  • Dual component dripper (herein after "dripper") 10 is assembled from two components - an internal component 20 and an external component 30.
  • Internal component 20 is formed in the shape of a semi rectangular surface.
  • Two water inlets 41 and 42 are formed on the component. Each of these inlets includes an input filters 43 and 44, respectively. Each of these water inlets (41, 42) enables passage of water through it into passage 45.
  • Passage 45 is formed inside baffles labyrinth 47. Passage 45 leads to transit pool 49.
  • External component 30 is formed as a semi hollow profile whose cross section is rectangular. On the external wall surface 52 of external component 30 and nearly along the entire length dimension of the component, an exit pool 54 is formed. A thin protruding shoulder 56 binds it.
  • the dimensions of internal component 20 are adapted for assembly in a linear motion in the direction of arrow 60 to the inside (within) external component 30.
  • Dual component dripper 10 that is illustrated as an example in drawings No. 1 to 3, is formed - as said, with an internal component 20 whose shape is like a semi rectangular surface, while external component 30 is formed as a rectangular hollow profile.
  • any professional in this field would understand that it is possible to design a similar dual component dripper whose shape of the components is different.
  • the cross section of the external component is not rectangular (and hence also the cross section of the internal component which would be inserted and included in it), or formed in the shape of a hollow profile that is not closed at its bottom.
  • opening 62 that is formed in external component 30 is located above transit pool 49 which is formed as said in internal component 20.
  • the flow passage 45 existing in the pointed baffles labyrinth 47 is linked to the water flow passage of the exit pool 54 formed in external component 30.
  • External component 30 of dripper 10 is formed with an internal wall 70 (see drawing No. 3), so that upon assembling internal component 20 inside external component 30, inner wall surface 70 of external component 30 bounds the flow passage 45 located in labyrinth 47.
  • the pointed baffles labyrinth 47 is actually in direct contact with the inner wall 70 of external component 30.
  • passage 45 constitutes the damping mechanism of dripper 10 whose function is to reduce the water pressure.
  • Drawing No. 4 constitutes a cross section view of a typical portion of an integral dripping tube 410.
  • the dripping tube includes a tubular conduit 412 in which dual component drippers 10 were installed (two of them are shown in the drawing and designated 10' and 10", respectively).
  • the drippers are located along the length of tubular conduit 412 wherein they are fastened flush in part of their circumference to its inner wall surface 414.
  • No. 4 constitutes, as said, just a typical section of an integral dripping tube.
  • An integral dripping tube comprises many drippers that are installed in it at the time the tube is being manufactured - "in line" -located at a selected distance one from each other.
  • the installation (“planting”) of drippers 10 inside tubular conduit 412 and the operation of fastening them unto its internal wall surfaces 414 might be executed in a continuous process in the course of manufacturing the tubular conduit 412 (e.g. - manufacturing the conduit by extrusion).
  • a continuous process in the course of manufacturing the tubular conduit 412 (e.g. - manufacturing the conduit by extrusion).
  • integral dripping tubes see for example - Mehoudar's US 5,022,940 patent.
  • dripper 10 is led to contact with the inner wall surface 414 of the tube, wherein protruding shoulder 56 formed in external component 30 of the dripper is the one fastened to the internal wall surface of the tube.
  • internal wall 70 (see drawing 3) of external component 30 is the one that defined flow passage 45 of labyrinth 47, and thus the dripper's pointed baffles labyrinth 47 is not fastened to the flow of the hot material from which tubular conduit 412 is formed.
  • An additional characteristic of an integral dripping tube in accordance with the invention is - that for the length dimension of the tube, high accuracy is not required when forming the openings in the tube to be opposite the water exits from the drippers.
  • exit pool 54 formed on the external wall 52 of external component 30
  • exit pool 54 extends nearly along the entire length of the component's length dimension, a factor that facilitates the opening of the water exit opening from the tube (for example, see the configuration of the elongated slit 418 in drawing No. 4), and this, as said - without being compelled to provide special accuracy.
  • the size of the exit pool enables to alleviate the accuracy requirements for the formation of the outlet holes in the tube along the length dimension, as well as - enables implementation of an exit opening in an elongated slit configuration (one or more), as is recommended, e. g., for the application of using integral dripping tubes when intended to be buried in the ground.
  • a dual element component dripper 10 - being by definition a bi- component device, requires preliminary assembling operation of the internal component 20 into the inside of external component 30.
  • the present invention includes also means for manufacturing the dual component drippers referred to in the application. This means enables automatic assembly of the drippers, already when they are still inside the mold at which their components are manufactured.
  • Drawing No. 5 constitutes a schematic illustration of an injection mold 510 suitable for manufacturing the dual component dripper 10, illustrated in drawings No. l to 3.
  • Injection mold 510 comprises, as normally accepted, two assemblies - 520 and 530, that might be brought together one to the other and separated one from the other in the directions of arrow 540 (see drawing No. 5). Any professional in this field would understand that the directions of coupling (closing) and opening (de-coupling) of the injection mold (as illustrated by arrow 540) is essentially perpendicular to the contact surface areas of the two assemblies.
  • Assembly 520 which is the moveble side of the injection mold, is formed with a cavity 550 for manufacturing by injection the two components of dripper
  • assembly 530 which is the static side of the injection mold, is formed with the suitable designating protruding entities 562 and 564 for forming the surface contours of internal component 20 (see for example drawings numbered 1 to 3 - the configuration of the pointed baffles labyrinth 47 and transit pool 49), as well as the surface areas of the external component 30 (for example see there - opening 62, exit pool 54).
  • Injection mold 510 includes, in addition, assembling means 570 for assembling - one into the other - the two components of the dripper 10, namely 20 and 30 (internal and external, respectively, the components are not illustrated). The discussion explaining the structure and the operation mode of assembling means 570 would be presented in detail later, when referring to drawings number 6 to 13. Injection mold 510 includes in addition means 580 (it is veiled in the drawing, hence presented by a broken line) for extracting the assembled dripper 10 from within cavity 550.
  • assembling of the two dripper components 20 and 30 one into the other is accomplished by a linear movement of the internal component 20 in the direction of arrow 575 - into the external component 30 that remains at its position.
  • the direction is essentially perpendicular to that of the direction of opening mold 510 as shown by arrow 540.
  • An additional feature is that the assembly of the two components one into the other, is accomplished while the two components are still in cavity 550.
  • any professional in this field would understand that a mold as the shown mold 510, might include a large number of cavities (i. e., it might be a multi cavity mold). Accordingly, the mold would also include a suitable number of means for assembling drippers in each of the cavities and for extracting the assembled ones from every one of them.
  • injection mold 510 is only illustrated schematically in drawing No. 5, being solely an example presented for providing a principled explanation of the mode of operation of the means for manufacturing the dual component dripper.
  • any professional in this field would understand that in another configuration yet still being in accordance with the present invention, assembling the two dripper's components 20 and 30 one inside the other, might as well be accomplished by a linear movements of both components together.
  • 510 comprises means (that are not illustrated) for directing and driving the raw material injected into cavity 550 as common in injection molds techniques. For example, a "hot runner” for transporting molten raw material under pressure through a "gate” -one or more, into the cavity.
  • injection mold 510 might serve for manufacturing the internal and external components of the dripper, from raw materials that are different one from the other.
  • the raw material used to manufacture the internal component might be of the polypropylene type
  • the raw material used to manufacture the external component would be of the polyethylene type - similar to the raw material commonly used for extruding the tubular conduit in which the drippers are installed (in a manner that facilitates the task of bonding the drippers' body to the internal tube wall, because the materials in contact are identical).
  • drawings numbers 6 to 13 These drawings constitute schematic illustrations of the manufacturing stages of the components of dripper 10, the one illustrated in drawings No. 1 to 3 - their assembly one to another, wherein all is accomplished within mold 510 of the type illustrated in drawing No. 5, and finally the extraction of the already assembled dripper 10 from within mold 510.
  • the moveble assembly 520 of mold 510 is illustrated in drawing No. 6.
  • the illustration presents the state immediately following the injection of the drippers components 20 and 30 in tandem.
  • the assembling means 570 serves to assemble the two dripper's components one unto the other, including Plunger 610 movable in the direction of arrow 620.
  • Plunger's assembly 610 is formed with pin 630.
  • Pin 630 is in contact with one end 640 of internal component 20 (that has just been formed by injection).
  • Assembling means 570 includes in addition, a support means 650 that is movable in the direction of arrow 670 (the directions of arrows 620, 670 and arrow 575 depicted in drawing No.
  • Support assembly 650 is formed with pin 660. Around pin 660 an external component 30 was injected. Pin 660 is in contact with a second end 680 of internal component 20.
  • Drawing No. 7 depicts extractor means 580 for removing dripper 10 from within cavity 550 immediately after its assembly (in a manner to be elaborated upon when referring to drawings number 8 to number 13).
  • - reference is made to 4 mobile pins, numbered 710, 720, 730 and 740, respectively.
  • Drawing No. 8 illustrates assembling means 570.
  • Assembling means 570 serves to assemble the two dripper's components, 20 and 30, together (one to the other) during the process of inserting internal component 20 into external component 30.
  • drawing No. 9 the illustration depicts assembling means 910 immediately after the termination of the injection of the two components in tandem.
  • the external component of the dripper is identical to the external component 30 of dripper 10 as it was described when referring to previous drawings.
  • the internal component 920 of the dripper illustrated in drawings No. 9 and No. 10 is different from internal component 20 by being formed with an end that will be leading, later, its linear movement into external component 30, with an addition of bracket means 930.
  • bracket means 930 enables to pull internal component 920 into external component 30.
  • Pin 950 of supporting assembly 940 is formed at its end with anchoring means 960 that is connected to bracket 930 in such a manner that enables to pull internal component 920.
  • Bracket means 930 is formed by injection in the shape of a trapezoidal end 970
  • anchoring means 940 is formed at the end of pin 950, as two teeth 980 and 990 respectively, that encircle the trapezoidal end 970.
  • Drawings No. 11 to 13 show the extraction of the already assembled dripper 10 from within cavity 550.
  • extracting means 580 for removing dripper 10 from within cavity 550 enters into operation, and - in the illustrated example, four mobile pins
  • This general method includes the stages of - forming the two dripper components in tandem by injecting plastic material into a single injection mold, assembling the two components of the dripper - one into the other, by a linear movement in a direction essentially perpendicular to the direction of opening of the injection mold and while the two components are still in the mold, and finally

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  • Life Sciences & Earth Sciences (AREA)
  • Soil Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Environmental Sciences (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

La présente invention concerne un goutteur à deux composants qui comprend un composant interne pourvu d'un labyrinthe à passage d'écoulement et un composant externe pourvu d'un bassin de sortie formé au niveau de sa surface de paroi externe. Ledit goutteur est caractérisé en ce que le composant interne est dimensionné de manière appropriée pour être assemblé dans ledit composant externe, au moyen d'un mouvement linéaire, de telle façon que suite à l'assemblage du composant interne dans ledit composant externe, le passage d'écoulement situé dans le labyrinthe est raccordé, ce qui engendre un passage d'écoulement de l'eau menant au bassin de sortie.
PCT/IL2005/000964 2004-09-13 2005-09-11 Distributeur de gouttes a deux composants et son procede de production WO2006030419A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL164043A IL164043A (en) 2004-09-13 2004-09-13 Dual component drip emitter and its production means
IL164043 2004-09-13

Publications (2)

Publication Number Publication Date
WO2006030419A2 true WO2006030419A2 (fr) 2006-03-23
WO2006030419A3 WO2006030419A3 (fr) 2008-01-10

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PCT/IL2005/000964 WO2006030419A2 (fr) 2004-09-13 2005-09-11 Distributeur de gouttes a deux composants et son procede de production

Country Status (2)

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IL (1) IL164043A (fr)
WO (1) WO2006030419A2 (fr)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8317111B2 (en) 2010-01-31 2012-11-27 Amirim Products Development & Patents Ltd. Bi-component drip emitter
US9743595B2 (en) 2006-02-22 2017-08-29 Rain Bird Corporation Drip emitter
US9872444B2 (en) 2013-03-15 2018-01-23 Rain Bird Corporation Drip emitter
US9877442B2 (en) 2012-03-26 2018-01-30 Rain Bird Corporation Drip line and emitter and methods relating to same
US9877441B2 (en) 2012-03-26 2018-01-30 Rain Bird Corporation Elastomeric emitter and methods relating to same
US9877440B2 (en) 2012-03-26 2018-01-30 Rain Bird Corporation Elastomeric emitter and methods relating to same
US9883640B2 (en) 2013-10-22 2018-02-06 Rain Bird Corporation Methods and apparatus for transporting elastomeric emitters and/or manufacturing drip lines
USD811179S1 (en) 2013-08-12 2018-02-27 Rain Bird Corporation Emitter part
CN107821106A (zh) * 2017-09-28 2018-03-23 大禹节水（天津）有限公司 一种滴灌用压力补偿式滴头
US10285342B2 (en) 2013-08-12 2019-05-14 Rain Bird Corporation Elastomeric emitter and methods relating to same
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
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
US11051466B2 (en) 2017-01-27 2021-07-06 Rain Bird Corporation Pressure compensation members, emitters, drip line and methods relating to same
US11985924B2 (en) 2018-06-11 2024-05-21 Rain Bird Corporation Emitter outlet, emitter, drip line and methods relating to same

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US4430020A (en) * 1982-09-29 1984-02-07 Robbins Jackie W D Drip irrigation hose
US6179949B1 (en) * 1997-04-18 2001-01-30 Swisscab S.A. Method for manufacturing a drip irrigation tube and dripper unit therein
US6371390B1 (en) * 2000-08-21 2002-04-16 Amir Cohen Drip irrigation hose and method of making same
US6382530B1 (en) * 2000-07-10 2002-05-07 Nelson Irrigation Corporation Pressure compensating drip tape
US6568607B2 (en) * 2001-03-16 2003-05-27 The Toro Company Emitter
US20050258278A1 (en) * 2001-11-26 2005-11-24 Amir Cohen Drip irrigation hose and method for making same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4430020A (en) * 1982-09-29 1984-02-07 Robbins Jackie W D Drip irrigation hose
US6179949B1 (en) * 1997-04-18 2001-01-30 Swisscab S.A. Method for manufacturing a drip irrigation tube and dripper unit therein
US6382530B1 (en) * 2000-07-10 2002-05-07 Nelson Irrigation Corporation Pressure compensating drip tape
US6371390B1 (en) * 2000-08-21 2002-04-16 Amir Cohen Drip irrigation hose and method of making same
US6568607B2 (en) * 2001-03-16 2003-05-27 The Toro Company Emitter
US20050258278A1 (en) * 2001-11-26 2005-11-24 Amir Cohen Drip irrigation hose and method for making same

Cited By (26)

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US9743595B2 (en) 2006-02-22 2017-08-29 Rain Bird Corporation Drip emitter
US10842090B2 (en) 2006-02-22 2020-11-24 Rain Bird Corporation Drip emitter
US8317111B2 (en) 2010-01-31 2012-11-27 Amirim Products Development & Patents Ltd. Bi-component drip emitter
US8998112B2 (en) 2010-01-31 2015-04-07 Amirim Products Development & Patents Ltd. Bi-component drip emitter
US9877442B2 (en) 2012-03-26 2018-01-30 Rain Bird Corporation Drip line and emitter and methods relating to same
US9877441B2 (en) 2012-03-26 2018-01-30 Rain Bird Corporation Elastomeric emitter and methods relating to same
US9877440B2 (en) 2012-03-26 2018-01-30 Rain Bird Corporation Elastomeric emitter and methods relating to same
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
US9872444B2 (en) 2013-03-15 2018-01-23 Rain Bird Corporation Drip emitter
USD811179S1 (en) 2013-08-12 2018-02-27 Rain Bird Corporation Emitter part
USD826662S1 (en) 2013-08-12 2018-08-28 Rain Bird Corporation Emitter inlet
US10285342B2 (en) 2013-08-12 2019-05-14 Rain Bird Corporation Elastomeric emitter and methods relating to same
US10631473B2 (en) 2013-08-12 2020-04-28 Rain Bird Corporation Elastomeric emitter and methods relating to same
US9883640B2 (en) 2013-10-22 2018-02-06 Rain Bird Corporation Methods and apparatus for transporting elastomeric emitters and/or manufacturing drip lines
US10420293B2 (en) 2013-10-22 2019-09-24 Rain Bird Corporation Methods and apparatus for transporting emitters and/or manufacturing 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
US11422055B2 (en) 2014-09-11 2022-08-23 Rain Bird Corporation Methods and apparatus for checking emitter bonds in an irrigation drip line
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
US10626998B2 (en) 2017-05-15 2020-04-21 Rain Bird Corporation Drip emitter with check valve
CN107821106A (zh) * 2017-09-28 2018-03-23 大禹节水（天津）有限公司 一种滴灌用压力补偿式滴头
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

Also Published As

Publication number Publication date
WO2006030419A3 (fr) 2008-01-10
IL164043A (en) 2010-11-30
IL164043A0 (en) 2005-12-18

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