• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    DRIP IRRIGATION TUBE WITH MEASURING ELEMENTS INSERTED IN THE SAME. A drip irrigation pipe (2) is provided with measuring elements (1) comprising, respectively, inlet regions (4), through which water in the pipe (2) reaches the measuring elements (1), regions of measurement (6), formed by a labyrinth channel (7), which is bounded by two side walls (8), (9), a cover (10) and the wall (3) of the drip irrigation tube (2) and in which a reduction in the pressure of the water circulating in it occurs, and outlet regions (13), through which water emerges out of the drip irrigation tube through the outlet openings (14) made in the wall (3) the tube. The respective exit region (13) borders at least one side wall (8), (9), of the labyrinth channel (7); at least one region of this side wall is covered by an elastic membrane (15), forming a part of the cover (10), so that the side wall (8) is able to be lifted off the wall (3) of the tube by means of the elastic membrane (15) and form a passage (17), through which the water coming from the labyrinth channel (7) can reach the exit region directly. The water flowing through the measuring element (1) can be measured in this way (...).
    公开号:BR102015025155B1
    申请号:R102015025155-6
    申请日:2015-09-30
    公开日:2020-12-15
    发明作者:Ahai LOEBINGER
    申请人:The Machines Yvonand Sa；
    IPC主号:
    专利说明:

    [001] The present invention relates to a drip irrigation tube with measurement elements inserted in it, which are connected to the wall of the drip irrigation tube, where each of the measurement elements comprises inlet regions, through the which water from the tube arrives at the measuring elements, in the measurement regions, formed in each case by a labyrinth channel, which is bounded by two side walls, a cover and the wall of the drip irrigation tube and in which a Reduction of circulating water pressure occurs, and outlet regions, through which water emerges out of the drip irrigation tube through outlet openings made in the tube wall.
    [002] Drip irrigation tubes of this type are known in several projects. With such drip irrigation tubes direct irrigation of the plants is achieved. For this purpose, at least one measuring element can be installed in the pipe in the region of each plant, through whose measuring element water can emerge, drop by drop, through an outlet opening and can irrigate the respective plant accordingly. . With such drip irrigation tubes a very efficient and economical plant irrigation can be achieved.
    [003] During the irrigation process, the water in the drip irrigation tubes is under a certain pressure. In these drip irrigation tubes, the measuring elements are installed at a certain spacing from each other. In each of these measuring elements, a reduction in water pressure occurs in the measuring region; the water escapes, drop by drop, out of the drip irrigation tubes through the outlet openings. These drip irrigation tubes can be of great length. In the crops to be irrigated, these drip irrigation tubes follow the unevenness or slopes of the soil. Due to the length of the drip irrigation tubes or, respectively, the differences in altitude to be overcome, a different water pressure may occur in these drip irrigation tubes during the irrigation process. With the measuring elements known from the state of the art there is the drawback that the same amount of water does not escape in all the measuring elements over time, therefore, the individual plants are not irrigated equally. In the locations of the drip irrigation pipe where the water pressure is high, more water therefore escapes than in places where the water pressure in the drip irrigation pipe is lower, for the reasons mentioned.
    [004] Drip irrigation tubes are known to be provided with measuring elements in which the labyrinth channel, forming the measurement region, can be changed depending on the water pressure. For this purpose, by increasing the water pressure in the drip irrigation tube, the discharge cross section of the labyrinth channel is reduced, whereby a greater measurement of the exhaust water can be achieved by increasing the pressure in the tube. . A narrowing of the discharge cross section of the labyrinth channel implies, however, the risk that the thus restricted discharge cross section may be obstructed by soil particles located in the water. A clogging of a measuring element can, however, have the consequence that the plants to be irrigated by means of that measuring element may die. It is also not possible, in a simple way, to clean dirt or clogging of the measuring element. and overcome the corresponding defect.
    [005] The object of the present invention, therefore, is to design the measuring elements for drip irrigation pipes in such a way that the discharge of water out of the respective measuring element remains as constant as possible with the change in pressure of the water. water in the drip irrigation tube and an increased risk of clogging these measuring elements by soil particles located in the water can be kept low.
    [006] This object is achieved according to the invention, in which the boundaries of the respective exit region in at least one side wall of the labyrinth channel, in which at least one region of the side wall is covered and connected by a elastic membrane forming a part of the cover, in which the side wall is able to be lifted from the tube wall through the elastic membrane and a passage is created through which the water from the labyrinth channel reaches directly to the outlet region.
    [007] This can be achieved with these measuring elements that, with a minimum of water pressure inside the drip irrigation tube, the labyrinth channels that form the measurement region are able to be opened laterally so that the region of measurement is shortened, and water is able to flow laterally out of the labyrinth channel directly into the outlet region. Only when the water pressure is high inside the drip irrigation tube is the water carried over the entire length of the labyrinth channel, through which the desired measurement can also be achieved here. It is also achieved, through this solution, that the risk of clogging the labyrinth channel by soil particles located in the water is not increased; the discharge cross section of the labyrinth channel is not reduced. An ideal mode of operation of these measuring elements is thus ensured when changing the water pressure conditions inside the drip irrigation tube.
    [008] By preference, the input regions of measuring elements are supplied with filters, through which it should be avoided, as much as possible, that the soil particles that may be located in the water, reach the maze channel.
    [009] Preferably, the measuring elements are made of a material, in particular an elastomer, which simplifies the manufacture of these measuring elements.
    [0010] Preferably projections and depressions are provided on the side walls to form the labyrinth, through which an ideal pressure reduction is achieved and the measuring elements can be manufactured in a simple way, for example, by means of perforation or stamping.
    [0011] The two side walls that form the labyrinth channel can extend from the entrance regions over at least a part of the length of the elastic membrane, they can also extend from the entrance regions over the entire length of the membrane elastic, which can be advantageous depending on the use of the measuring elements.
    [0012] Another advantageous embodiment of the invention is that the labyrinth channel is arranged around the exit region and has an external side wall and an internal side wall. A compact construction of the measuring elements is achieved by means of the centrally arranged outlet region.
    [0013] Preferably, the outer side wall of the labyrinth channel is connected to the tube wall and the elastic membrane, and the inner side wall is connected to the elastic membrane and is capable of being lifted off the tube wall. In this way it is achieved that, with a minimum pressure in the drip irrigation tube, water flows through the measurement region with the inner side wall raised from the tube wall being able to reach directly to the centrally arranged outlet region.
    [0014] A more advantageous embodiment of the invention is that the inner side wall is provided with protrusions that protrude into the exit region, the protrusions of which are arranged in a distributed manner along the length of the inner side wall. The length of the labyrinth channel through which water flows is therefore able to be changed in stages.
    [0015] Preferably, the protuberances have a height that decreases from the entrance region towards the end of the labyrinth channel. In this way, with the decrease in pressure inside the drip irrigation tube, the water initially escapes from the protuberance to the outlet region that has the lowest height.
    [0016] Preferably the surface of the inner sidewall facing the pipe wall has an inclination in relation to the outlet region, whereby it is achieved that the elastic membrane is capable of being optimally folded.
    [0017] Embodiments of the invention will be explained more accurately below, by way of example, with reference to the attached drawings:
    [0018] Figure 1 is a sectional representation along line I-I of Figure 4 of a first incorporation of a measurement element of the installation according to the invention;
    [0019] From Figure 2 to Figure 4, each is a sectional representation along line II-II of Figure 1 of the first incorporation of the measurement element, according to Figure 1, with, in each case, a different one water pressure inside the drip irrigation tube;
    [0020] Figure 5 is a sectional representation along the line V-V of Figure 8 of a second embodiment of a measurement element of the installation according to the invention;
    [0021] From Figure 6 to Figure 8 are, each, representations in section along line VI-VI of Figure 5 of the second incorporation of the measurement element, according to Figure 5, with, in each case, a different one water pressure inside the drip irrigation tube;
    [0022] Figure 9 is a sectional representation along line IX-IX of Figure 12 of a third embodiment of a measurement element of the installation according to the invention;
    [0023] From Figure 10 to Figure 12 are, each, representations in section along line XX of Figure 9 of the third incorporation of the measurement element, according to Figure 9, with, in each case, a different water pressure inside the drip irrigation tube;
    [0024] Figure 13 is a sectional representation along line XIII-XIII of Figure 16 of a fourth embodiment of a measurement element of the installation according to the invention; and
    [0025] From Figure 14 to Figure 16 are each section representations along line XIV-XIV of Figure 13 of the fourth incorporation of the measurement element according to Figure 13, with, in each case, a different pressure of water into the drip irrigation tube.
    [0026] Visible in Figures 1 to 4 is a first incorporation of a measuring element 1 whose measuring elements, in a known way, are inserted spaced apart from each other in a drip irrigation pipe 2. These irrigation pipes drip lines 2 can be produced in a known manner by means of an extrusion method. During this extrusion process, the measuring elements 1 are inserted into the formed tube 2 and are connected to the wall 3 of the drip irrigation tube 2.
    [0027] Through an inlet region 4 the water reaches the measuring element 1 outside the interior of the drip irrigation tube 2. The inlet region 4 is provided with filters 5 in a known manner, shown only schematically, by means of of which soil particles that may be present in the water must be prevented from penetrating the measuring element 1. Through the inlet region 4 the water reaches a measuring region 6, which is formed by a labyrinth channel 7. This channel of labyrinth 7 is bounded by two side walls 8, 9, a cover 10 and wall 3 of the drip irrigation tube 2. On the side walls 8 and 9 protrusions 11 and depressions 12 are provided, which form the labyrinth and through the which a reduction in the pressure of the water flowing in this location occurs.
    [0028] From the labyrinth channel 7 the water reaches an outlet region 13, from which water can emerge out of the drip irrigation tube 2 and irrigate the corresponding plant through an outlet opening 14 made in the wall 3 of the drip irrigation tube 2.
    [0029] As can be seen from Figure 1, in particular, the exit region 13 extends not only around the exit opening 14, but also along the side walls 8 and 9 of the labyrinth channel 7.
    [0030] As can be seen from Figures 2 to 4, the cover 10 in the region of the labyrinth channel 7 is composed of an elastic membrane 15. This elastic membrane 15 covers the entire width of the measuring element 1 along the labyrinth channel length 7.
    [0031] The elastic membrane 15 is designed in such a way that in an unloaded state, that is, when the water pressure inside the drip irrigation tube is equal to zero, it presents a curve 16 directed into the tube drip irrigation system, as can be seen in Figure 2. As long as the two side walls 8 and 9 are firmly connected with this elastic membrane 15, these walls in this state of the elastic membrane 15 are raised from the wall 3 of the drip irrigation tube 2, in particular in the central region, so that a passage 17 arises through which water from the labyrinth channel 7 can flow directly into the outlet region 13 and out of the measuring element 1 through the outlet opening 14.
    [0032] When the water pressure inside the drip irrigation tube 2 increases and presses against the elastic membrane 15, as shown in Figure 3, the curve 16 of the elastic membrane moves towards the wall 3 of the irrigation tube of drip 2, the two side walls 8 and 9 are pressed in the two end regions of the labyrinth channel 7 against the wall 3, the passage 17, through which the water can reach directly in the exit region 13 from the flow channel. labyrinth 7, becomes smaller, and the water that arrives at the exit region is thus measured at a certain amount through the measurement region 6.
    [0033] When the water pressure inside the drip irrigation tube 2 increases further, as shown in Figure 4, the elastic membrane 15 and its curve 16 is pressed harder against the wall 3 of the irrigation tube. drip 2 in such a way that the two side walls 8 and 9 are pressed into the wall 3 over the entire length; the passages 17 shown in Figures 2 and 3 are completely closed. The water that arrives in the measuring region 6 crosses the total length of the labyrinth channel 7 and then ends up in the outlet region 13. In this way, therefore, it reaches the full measuring capacity of the measuring element. It is achieved through this design of the measuring element 1 that, with a minimum water pressure, the measurement effect inside the drip irrigation pipe is minimal. With a higher pressure the measurement effect is correspondingly greater. In this way, it can be achieved that the amount of water emerging out of the measuring element 1 through the outlet opening 14 is practically unchanged, regardless of the water pressure inside the drip irrigation tube 2, and a uniform irrigation of the plants is achieved. , thus, obtained regardless of whether these plants are located in the beginning region of the drip irrigation tube or in its final region.
    [0034] In Figures 5 to 8, a second embodiment of a measuring element 1 can be seen which is inserted in a known way into a drip irrigation tube 2 and is connected to its wall 3. This measuring element 1, likewise, it has an inlet region 4 with filters 5 disposed in it through which water is able to flow to the measurement region 6 of the measuring element 1, whose measurement region 6 is again formed by a channel of labyrinth 7, which consists of two side walls 8 and 9. Water emerges from the labyrinth channel 7 to the outlet region 13, which surrounds the two side walls 8 and 9 and the end of the labyrinth channel 7 completely. Out of the outlet region 13, water can escape again, drop by drop, through the outlet opening 14.
    [0035] As can be seen from Figures 6 to 8, the cover 10 of this measuring element, once again, is composed of an elastic membrane 15, which covers the measuring region 6, the side walls 8 and 9 , and the entire outlet region 13. The two regions of the side walls 8 and 9 that face towards the elastic membrane 15 are connected to this elastic membrane 15. The regions of the side walls 8 and 9 that face towards the wall 3 of the drip irrigation tube 2 are not attached to the wall 3. The elastic membrane 15 is elastically pre-tensioned in such a way that it has a curve facing the interior of the drip irrigation tube 2, when the water pressure in the tube drip irrigation 2 is equal to zero, as can be seen from Figure 6. The two side walls 8 and 9, which are connected with the elastic membrane 15, are raised from the wall 3 of the drip irrigation tube 2. Through this survey, a passage 17 is created between the labyrinth channel 7 and the exit region 13 whose passage increases from the entrance region 4 to the end of the labyrinth channel 7, far from the entrance region 4.
    [0036] When the water pressure inside the drip irrigation tube 2 increases, the elastic membrane 15 is pressed against the wall 3 of the drip irrigation tube 2, as can be seen from Figure 7. In the adjacent area to the entrance region 4 the side walls 8 and 9 of the labyrinth channel 7 are completely pressed against the wall 3. The region of the side walls 8 and 9 away from the entrance region 4 are still raised from the wall 3 so that a passage here 17 continue to be created. The water entering the labyrinth channel 7 outside the inlet region 4 flows through the part of the labyrinth channel 7, where the side walls 8 and 9 are pressed against the wall 3. Then, water can escape through the passage 17 directly to the outlet region 13. Water is thus partially measured and can emerge through outlet opening 14 and irrigate the corresponding plants.
    [0037] When the water pressure inside the drip irrigation tube continues to increase, the elastic membrane 15 is pressed further against the wall 3 of the drip irrigation tube 2, as can be seen from Figure 8, so that the two side walls 8 and 9, which form the labyrinth channel 7 are pressed against the wall 3 along its entire length, and no water can thus escape laterally from the labyrinth channel 7. Water flows in this way, over the entire length of the labyrinth channel 7, it is correspondingly greatly measured and then can emerge through the outlet opening 14 for the irrigation of the corresponding plants.
    [0038] In this way, also with this incorporation of the measuring element, water is measured in a manner dependent on the water pressure inside the drip irrigation tube, so that substantially uniform irrigation is achieved over the entire length of the drip irrigation tube 2.
    [0039] A third incorporation of a measuring element 1 inserted into the drip irrigation tube 2 and connected to its wall 3 is illustrated in Figures 9 to 12. This measuring element 1, again, has an inlet region 4 through which water can enter a labyrinth channel 7. The labyrinth channel 7 surrounds the outlet region 13 in an annular manner. It is formed by an external side wall 18 and an internal side wall 19. Through labyrinth channel 7 the water reaches the outlet region 13, which again is provided with an outlet opening 14 in order to allow a measured outlet of water out of the drip irrigation pipe.
    [0040] The outer side wall 18 and the inner side wall 19, the labyrinth channel 7, as well as the outlet region 13 are covered by an elastic membrane 15. The outer side wall 18 and the inner side wall 19 are connected with the elastic membrane 15. The outer side wall 18 is also connected with the wall 3 of the drip irrigation tube 2. The inner side wall 19 is not connected with the wall 3 of the drip irrigation tube 2.
    [0041] As can be seen from Figure 10, the elastic membrane 15 is pre-tensioned in such a way that it is curved into the drip irrigation tube 2 when the water pressure in this drip irrigation tube 2 is equal to zero. By means of this curvature, as can be seen from Figure 10, the internal side wall 19 is raised from the wall 3 of the drip irrigation tube 2. In this way, in this way, a passage 17 appears between the internal side wall 19 and the wall 3 of the drip irrigation tube. The surface 20 facing the wall 3 of the drip irrigation tube 2 can be provided with an inclination 21, directed to the outlet region 13. The passage 17 is thereby increased when the water pressure inside the irrigation tube of drip 2 is equal to zero.
    [0042] With the increase in water pressure inside the drip irrigation tube 2, as shown in Figure 11, the elastic membrane 15 is pressed against the wall 3 of the drip irrigation tube 2. The inner side wall 19, thus, it also moves towards the wall 3 of the drip irrigation tube 2; the passage 17 becomes smaller, and the water reaching the outlet region 13 is thus partially measured.
    [0043] When the water pressure inside the drip irrigation tube 2 increases further, as shown in Figure 12, the elastic membrane 15 moves further towards the wall 3 of the drip irrigation tube 2, until that the inner side wall 19 with its surface 20 is completely in contact with the wall 3. This means that the water that arrives in the labyrinth channel 7 through the inlet region 4 must flow along the entire length of the labyrinth channel 7. In this way, a maximum water measurement takes place.
    [0044] So, too, with this third incorporation of a measuring element a measurement of practically unchanged water is achieved over the entire length of a drip irrigation tube 2, through which an ideal irrigation of the plants is achieved.
    [0045] The fourth incorporation of a measuring element 1 shown in Figures 13 and 16, which can be inserted into a drip irrigation tube 2 and connected to the wall 3, has, as well as the third incorporation, an inlet region 4, which is provided with filters 5, from whose region the incoming water arrives in the labyrinth channel 7, whose channel is annularly arranged around the outlet region 13. The external side wall 18 is connected to the wall 3 of the tube drip irrigation system 2. The inner side wall 19 has protrusions 22 distributed along its entire length. The measuring element 1, again, is covered with an elastic membrane 15. The outer side wall 18, the inner side wall 19 and the protuberances 22 are connected to this elastic membrane 15. The outer side wall 18 and the side wall internal 19 are also connected to the wall 3 of the drip irrigation tube 2. The protrusions are not connected to the wall 3.
    [0046] As can be seen from Figure 14, the elastic membrane 15 is pre-tensioned in such a way that, when the water pressure inside the drip irrigation tube 2 is zero, the protuberances 22 directed to the region of outlet 13 are raised from the wall 3. For this purpose, the height of the protrusions 22 decreases from the inner side wall 19 towards the outlet region 13. Water can thus flow into the outlet region over the protuberances 22 .
    [0047] When the water pressure inside the drip irrigation tube 2 increases, as can be seen from figure 15, the elastic membrane 15 is pressed towards the wall 3 of the drip irrigation tube 2. This means that protrusions 22 are lowered towards wall 3; the passage 17, through which water can flow to the exit region 13 of the labyrinth channel 7 becomes smaller. A portion of the water can thus escape out of the labyrinth channel 7 directly through these passages, while the remainder of the water must flow through the labyrinth channel 7. A partial measurement of the water flowing through the measuring element 1 is achieved in this way.
    [0048] When the water pressure inside the drip irrigation tube 2 increases further, the elastic membrane 15 is further pressed towards the wall 3 of the drip irrigation tube 2. The protrusions come to confine to the wall 3 of the tube drip irrigation completely, so that water no longer escapes to the outlet region 13 from these protuberances 22. In this way, the water must flow through the entire length of the labyrinth channel 7 and is correspondingly greatly measured.
    [0049] The heights of the protrusions 22 may be different. The protuberance closest to the entrance region 4 may have the highest height. The protuberance 22 which has the longest distance from the entry region 4 may be the shortest height. This way, the effective length of the labyrinth channel 7 increases with the increase of the water pressure inside the drip irrigation tube 2.
    [0050] It is also achieved with this fourth incorporation of a measuring element, through the adjusted measurement, in each measuring element 1 along the entire length of a drip irrigation tube 2, that a practically equal amount of water comes out of the outlet opening 14 for plant irrigation.
    [0051] It is achieved with the present invention that the irrigation of plants occurs in the same way over the entire length of the drip irrigation tubes.
    [0052] The measuring elements described above are made of a single material, in particular an elastomer that can be carried out with perforation or another suitable production process.
    权利要求:
    Claims (11)
    [0001]
    1.Drip irrigation tube with measuring elements (1) inserted in it, which are connected to the wall (3) of the drip irrigation tube (2), whose measuring elements (1) each comprise regions of inlet (4), through which the water from the tube (2) reaches the measuring elements (1), measuring regions (6), formed in each case by a labyrinth channel (7) with a discharge cross section , where the labyrinth channel (7) is bounded by two side walls (8, 9), a cover (10) and the wall (3) of the drip irrigation tube (2) and in which a reduction in water pressure that circulates in it, and outlet regions (13), through which water emerges out of the drip irrigation tube (2) through the outlet openings (14) made in the tube wall (3), the respective exit region (13) borders at least one side wall (8) or respectively (9) of the labyrinth channel (7), with at least one region the side wall (8) or respectively (9) is covered and connected by an elastic membrane (15), forming a part of the cover (10), and the side wall (8) or respectively (9) is capable of be lifted from the wall (3) of the tube by means of the elastic membrane (15) and a passage is created through which the water from the labyrinth channel (7) reaches the outlet region (13) directly, characterized by the fact that the discharge cross section is exempt from reduction.
    [0002]
    2.Drip irrigation tube with measuring elements (1) inserted in it, according to claim 1, characterized by the fact that the inlet regions (4) are provided with filters (5).
    [0003]
    3.Drip irrigation tube with measuring elements (1) inserted in it, according to claim 1 or 2, characterized by the fact that the measuring elements (1) are made of a material, in particular an elastomer.
    [0004]
    4.Drip irrigation tube with measuring elements (1) inserted in it, according to any one of claims 1 to 3, characterized by the fact that protrusions (11) and depressions (12) are provided on the side walls ( 8, 9) to form the maze.
    [0005]
    5.Drip irrigation tube with measuring elements (1) inserted in it, according to any one of claims 1 to 4, characterized by the fact that the two side walls (8, 9) forming the labyrinth channel (7) extend from the entrance region (4) for at least part of the length of the elastic membrane (15).
    [0006]
    6.Drip irrigation tube with measuring elements (1) inserted in it, according to any one of claims 1 to 4, characterized by the fact that the two side walls (8, 9), which form the water channel labyrinth (7) extend from the entrance region (4) along the entire length of the elastic membrane (15).
    [0007]
    7.Drip irrigation tube with measuring elements (1) inserted in it, according to any one of claims 1 to 4, characterized by the fact that the labyrinth channel (7) is arranged around the exit region (13) and has an external side wall (18) and an internal side wall (19).
    [0008]
    8.Drip irrigation tube with measuring elements (1) inserted in it, according to claim 7, characterized by the fact that the outer side wall (18) of the labyrinth channel (7) is connected to the wall ( 3) of the tube and with the elastic membrane (15), and the inner side wall (19) is connected with the elastic membrane (15) and is capable of being lifted off the wall (3) of the tube.
    [0009]
    9.Drip irrigation tube with measuring elements (1) inserted in it, according to claim 8, characterized by the fact that the inner side wall (19) is provided with protrusions (22) that project into the region outlet (13), the protuberances of which are arranged in a distributed way along the length of the internal side wall (19).
    [0010]
    10.Drip irrigation tube with measuring elements (1) inserted in it, according to claim 9, characterized by the fact that the protrusions (22) have a decreasing height from the entrance region (4) in the direction of the end of the labyrinth channel (7).
    [0011]
    11.Drip irrigation tube with measuring elements (1) inserted in it, according to any one of claims 7 to 10, characterized by the fact that the surface of the inner side wall (19) faces the wall (3 ) of the tube has an inclination towards the outlet region (13).
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    法律状态:
    2016-04-05| B03A| Publication of a patent application or of a certificate of addition of invention [chapter 3.1 patent gazette]|
    2018-07-24| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-09-03| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-09-01| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-12-15| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 30/09/2015, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    EP14187499.0A|EP3001897B1|2014-10-02|2014-10-02|Drip irrigation tube with metering elements inserted therein|
    EP14187499.0|2014-10-02|
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