• 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:
    SINGLE ROW UNIT WITH INTEGRATED PRESSURE SOURCE. An agricultural planter includes a plurality of single row units attached to a tool bar. Single row units include seed distributors in seed distributor housing to receive, separate and dispense seeds or other particulates. Seed distributors include a circular seed disk with a seed path to receive the seed in the seed distributor housing. Integrated with this distributor, as well as in the housing, is a dedicated electrical pressure source to provide a pressure differential for the seed distributor or distributors at a specific location on the planter. The pressure source can be positive or negative to temporarily adhere seeds to the distributor's seed disk. A single pressure source can provide the pressure differential for a single distributor or for multiple distributors or discs in a single row unit.
    公开号:BR112016023143B1
    申请号:R112016023143-0
    申请日:2015-04-06
    公开日:2021-03-16
    发明作者:Dustan Hahn；Matthew J Wilhelmi
    申请人:Kinze Manufacturing, Inc；
    IPC主号:
    专利说明:

    Cross Reference to Related Orders
    [001] The present application claims the priority, based on paragraph 119 (e) of title 35 of the United States Code (USC), of the provisional application of serial number 61 / 975.047, filed on April 4, 2014, the content of which is incorporated into this document in its entirety by reference. Field of the Invention
    [002] In general terms, the present invention relates to agricultural implements for planting seeds. More specifically, but not exclusively, the present invention relates to a row unit that includes a seed feeder with an integrated pressure source, such as a vacuum source, to provide a pressure differential in order to adhere seeds to a doser seed disk. Fundamentals of the Invention
    [003] A precision row sowing machine is a machine built to accurately distribute seeds to the soil. The precision row seeder usually includes a horizontal toolbar attached to a hitch header for connection behind a tractor. Row units are mounted on the toolbar. In different configurations, seeds can be stored in different hoppers in each row unit, or they can be kept in a central hopper and distributed to row units as needed. Row units include tools for working the soil to open and close a seed groove and a seed metering system to distribute seeds to the seed grooves.
    [004] In its most basic form, the seed dispenser includes a seed housing and disk. The housing is built to form a reservoir to maintain a seed bank. The seed bank can also be arranged in a different structure. The seed disk resides within the housing and rotates around a substantially horizontal central axis. As the seed disk rotates, it crosses the seed bank from where it picks up individual seeds. The seeds are subsequently dispensed in a seed trough, from where they fall into the seed groove.
    [005] The oldest seed dosers understood mechanical means to individualize seeds. These dosers were constructed so that fingers on the face of the seed disk would grab the seeds as they passed through the seed bank, subsequently releasing those seeds as they passed over the seed trough. Although these mechanical mechanical feeders are efficient, they are limited in terms of their ability to guarantee the individualization of seeds and are susceptible to dispensing duplicates (that is, several seeds) and / or failing to dispense by complete (ie, hops or errors). Other mechanical feeders use cells in conjunction with brushes to trap seeds inside the cavity and release them over the seed trough.
    [006] Newer systems include an air seed dispenser, for example, vacuum or positive pressure dispensers, in which the mechanical fingers are replaced by a disc with openings. A pressure differential is formed through opposite sides of the seed disc, which generates a suction force in the openings of the seed cells. As unobstructed seed cells pass through the seed bank, seeds are attracted to and remain in the seed cells until the seed cell passes through a region of the housing with reduced pressure differential. To create this region with a reduced pressure differential, the "vacuum" (ie, lower pressure) side of the seed disk is usually exposed to air pressure close to atmospheric levels, but not always at these levels.
    [007] At that point, the seeds are released from the seed cell of the seed disk in the seed trough. In comparison to mechanical feeders, air seed feeders improve individualization over a wider range of speeds. There is a problem with air seed dispensers where it can be difficult for the (negative) suction force or positive air force of the seed cell to suck or propel seeds from a stagnant seed bank. Another problem with air seed dispensers and, more specifically, the seed disk is that seeds not released at or near the edge of the seed disk are susceptible to greater rebound or rebound, thus negatively impacting the spacing between seeds. In those air seed metering units that actually release seeds at or near the edge of the seed disk, the seeds are sometimes hurled from the cells onto the seed disk by the side wall of the seed doser housing due to the close proximity of the side wall the housing with the cell.
    [008] In addition, the fluid source, which can be a positive air source or a vacuum source, is a generally large device that feeds air or vacuum pressure to several, if not all, air conditioning units. row of a seeder. This requires a large pressure source, as well as a large number of hoses extending from the pressure source (s) and row units. This generates debris in the seeder, which increases the greater the number of row units and / or seed dosers in a seeder. In addition, due to the sometimes long distances between the pressure source and the row unit, as well as the current status and inefficiency of the fans and vacuum distribution in the seeders, there may be a pressure drop, which can affect efficiency fluid pressure in the row unit. To compensate for this drop, it is possible that the pressure at the source needs to be higher, which requires more energy as well.
    [009] Therefore, there is a need in the art for a row unit of a seeder that includes an electric air pressure source and integrated in a row unit to provide positive or negative pressure to one or more seed dosers of the row unit. The pressure source may include an electric motor and pressure generator in or integrated with the row unit and / or seed doser. Summary of the Invention
    [010] In this context, the main objective, trait and / or advantage of the invention is to overcome deficiencies in the technique.
    [011] Another objective, feature and / or advantage of the invention is to provide a row unit of an agricultural implement with an integrated pressure source to provide a pressure differential to a seed disk in it.
    [012] Yet another objective, trait and / or advantage of the invention is to provide a dedicated electrical pressure source for each seed disk of a seed feeder in a row unit.
    [013] Yet another objective, feature and / or advantage of the invention is to provide a pressure source to provide a pressure differential to several seed disks of a common seed metering unit in a file unit.
    [014] Another objective, feature and / or advantage of the invention is to provide a pressure source comprising an electric motor and an air source in a row unit of an agricultural seeder.
    [015] Yet another objective, feature and / or advantage of the invention is to provide a pressure source in a seed feeder that includes an air cleaning device to clean the air that is used by the pressure source and / or the exhaust air from the seed dispenser.
    [016] Yet another objective, trait and / or advantage of the invention is to provide an electrical supply pressure source in a row unit that includes components capable of dividing the pressure between several seed disks.
    [017] Yet another objective, trait and / or advantage of the invention is to propose a pressure source for a seed dispenser configured to dispense different types of seed, seed hybrid or the like from a single housing or several .
    [018] These and / or other objectives, traits and advantages of the invention will translate to those skilled in the art. The invention is not limited to these objectives, traits and advantages nor is it limited by them. No realization needs to offer absolutely all the objectives, traits or advantages.
    [019] According to some aspects of the invention, an agricultural seeder row unit includes an integrated, electric fluid pressure source. The pressure source can be integrated into the row unit, or part of a seed donor or seed unit from the row unit. Some aspects include a seed dispenser comprising a housing with a single seed disk that is rotatably positioned within the housing. Other aspects include a single seed dispenser housing multiple seed disks within the housing. Still other aspects include several seed feeders with multiple housings, each including one or more seed disks in them.
    [020] The seed discs rotate inside the seed doser (s). The disks include several seed openings comprising seed cells. The seed openings can be radially spaced to form a seed path. In addition, according to some aspects, the one or more seed discs may include multiple seed paths on each disc, which will allow the invention to be used with virtually any type, shape, hybrid or number of seeds to be planted by an agricultural implement including aspects of the invention.
    [021] As the one or more seed disks rotate with one or more housings, the seed path passes through one or more seed banks, which are locations of seed agglomeration in the seed housing that can be fed by a hopper in the row unit, from one of several hoppers in the seed unit, or from an air seed feeder, which can comprise one or more seed tanks connected to the seed units. The integrated electrical pressure source generates a pressure differential, such as an impelling air force or vacuum force, at the seed openings. This causes a seed from the seed bank to temporarily adhere to the seed opening. The seed disk continues to rotate and moves a seed through a location where there is no pressure differential or forces acting on the seed. In that location, the seed is removed, as naturally by gravity, mechanically, by another mechanism or some combination of these. The seed is then moved to a furrow or ditch formed in the soil, such as by a seed tube or other transport medium.
    [022] As the pressure source is powered and integrated into the row unit and / or seed metering unit, the source can be more efficiently controlled to provide the pressure differentials necessary for planting one or more types, hybrids, varieties etc. of seed by one or more feeders in the row unit. In addition, independent control of the pressure source will allow for a cleaner appearance of the seeder, allow for varying pressure values in each seed feeder, allow controlled pressure forces for different types of seed, and even provide for cleaner air to be used for the entry and / or exhaustion of pressure in a seed dispenser.
    [023] Various configurations of row units and / or seed feeders are contemplated. For example, a single feeder with a single seed disk can include a single source of air pressure. A single doser housing with several seed disks can include a single pressure source with several ducts in order to provide positive or negative pressure to the seed disks. A single feeder housing with several seed discs can include a different pressure source for each seed disc in order to provide the necessary or desired pressure to it. A single pressure source can have a bifurcated air pressure to several seed disks at the same time. A single pressure source may include valves or deflectors that are automated or otherwise controlled to direct air to or from multiple paths to supply pressure to one of several seed disks in one seed feeder at a time. Still other configurations are contemplated.
    [024] In addition, a filtration system can be integrated with the row units and / or seed metering units to clean the air before or after use in the seed metering. For example, aspects of the invention contemplate the integration of a cyclonic type dust separator, also known as cyclonic separation, to one or all pressure sources. This air cleaning device is capable of reducing residues that, otherwise, could penetrate the air source, thus increasing the durability of the fan, the motor, the seed doser and other components of it.
    [025] In addition, an exhaust air cleaning device can also be incorporated and integrated with a doser and / or row unit. The cleaning device, which can be a cyclonic dust separator, or similar system, can operationally connect the exhaust of a feeder to collect the exhaust air from the feeder in order to reduce seed dust, seed husks or other particles that could possibly contain pesticides or other airborne chemicals or products that can harm the environment, that is, the field being planted. Brief Description of Drawings
    [026] Figure 1 is a perspective view of a seed implement.
    [027] Figure 2 is a perspective view of a conventional seeder row unit with an air seed dispenser attached to it.
    [028] Figure 3 is a side view of the conventional row unit in Figure 1.
    [029] Figure 4 is a top view in vertical projection of a seed feeder with standard connections with a pressure source.
    [030] Figure 5 is a side view of Figure 4.
    [031] Figure 6 is a view of a seed disk for use with a seed donor.
    [032] Figure 7 is a top view in vertical projection of a seed feeder with two seed disks and a single source of air pressure integrated into the feeder housing.
    [033] Figure 8 is a side view in vertical projection of the feeder of Figure 7.
    [034] Figure 9 is a top view in vertical projection of a seed feeder with two seed disks and two air pressure sources integrated into the feeder housing.
    [035] Figure 10 is a side view in vertical projection of the seed dispenser in Figure 9.
    [036] Figure 11 is a top view in vertical projection of a seed feeder with two seed disks and a single source of air pressure that includes valves to direct the source of air pressure.
    [037] Figure 12 is a side view in vertical projection of the seed dispenser in Figure 11.
    [038] Figure 13 is a rear view in vertical projection of a seed feeder with an integrated air pressure source and inlet and exhaust filter systems integrated with the seed feeder.
    [039] Various embodiments of the invention will be described in detail with reference to the drawings, in which equal reference numbers represent equal parts in the various views. Reference to various embodiments does not limit the scope of the invention.
    [040] The figures represented in this document do not represent limitations to the various embodiments according to the invention and are given in order to illustrate the invention by way of example. Detailed Description of Preferred Embodiments
    [041] Figure 1 is a perspective view of an exemplary embodiment of an agricultural implement 10, which is illustrated in the form of a sowing implement. This seeder 10 is further illustrated and described in U.S. Patent Application No. 13 / 927,177, which is incorporated in full in this document. Figure 1 illustrates seeder 110 with a tensioner 12, which can be a telescopic tensioner when seeder 10 is a front retraction seeder. A coupling header 16 is positioned at the first end 14 of the tensioner 12 and is used to connect the seed implement 10 to a tractor (not shown) or other vehicle to propel the seed implement 10. When the tensioner 12 is a telescopic tenor , it can be assisted by adding drawbars 22 on opposite sides of it. The drawbars 22 connect the tensioner 12 to arms first 32 and second 36, such that when the arms bend by the cylindrical operation, the drawbars 22 extend or retract sections of the telescopic tensioner 12 to extend it or shorten it so that the arms 32 and 36 can bend side by side and the tensioner 12.
    [042] Positioned at or near a rear end of the tensioner 12, there is a main or central frame 18. The main or central frame 18 extends widely perpendicular to the tensioner 12. The central frame 18 also includes a structure for central hoppers 26. Central hoppers 26, also called bulk filling hoppers, central hoppers or other tanks, house materials, such as seeds, insecticides, fertilizers or the like, which are distributed through a system to different row units in the frame and arms. For example, bulk fill hoppers 26 can operationally connect to an air seed delivery system to deliver seeds from bulk fill hoppers to individual row units. This air seed distribution system is disclosed in U.S. Patent No. 8,448,585, which is incorporated into this document in its entirety. In addition, hoppers 26 may contain a single type of seed, or may contain several types, hybrids and / or varieties of seed. The central frame 18 includes several row units 40 extending from the rear of the frame to distribute the material in a field. The central frame 18 also includes a wheel axle and transport wheels 30 extending from the frame 18. The transport wheels 30 support the main or central frame and are also the wheels that make contact with the ground when the implement 10 is transported to or from a field.
    [043] Extending from opposite sides of the central frame or main frame 18, the first 32 and second 36 arms are observed. The first 32 and second 36 arms generally mirror each other and therefore only the arm 32 will be described. It should be kept in mind that the opposite arm 36 comprises substantially the same components. The first arm 32 includes a first frame 34 extending separately but substantially on the same plane as the main four 18. Several row units 40 connect to the first frame 34. The row units 40 of the first arm 32 are substantially the same same as the row units of the main frame 18 and the opposite arm 36, which extend from the frame of the second arm 37. The number of row units 40 for use with the implement 10 may vary depending on the size of the implement 10 , the needs of the field, the type of field, the type of material distributed to the field and its similars. Also extending from the first arm frame 34, arm wheels 38 are observed. The arm wheels 38 support the arms 32 and 36 and allow to move the implement 10 without the row units penetrating the ground when making the curve in the field, cross channels or the like.
    [044] As mentioned, implement 10 includes several row units 40 extending from arms 32 and 36 and the central frame 18. A conventional seeder row unit 40 with an air seed feeder 42 positioned next to it is illustrated in Figures 2 and 3. For example, the seed doser 40 can use negative or positive air pressure to retain and transport seeds around one or more seed disks within the seed donor housing. The row unit 40 and the air seed dispenser 42 can be of the type illustrated and described in U.S. Patent Application No. 13 / 829,726, which is hereby incorporated in its entirety. The present invention contemplates other types of seed feeders, including mechanical feeders, brushes, fingers or the like, which can also be used with the present invention. In addition, as will be seen, the seed dispenser can be a multi-hybrid seed dispenser capable of dispensing one of several types, varieties, hybrids, etc. of seed in a row unit, such as by using multiple seed discs within the seed dispenser housing.
    [045] Row unit 40 includes a U-pin bracket (not shown) for mounting row unit 40 on the seeder frame or toolbar (on the center frame and arms), as it is sometimes called, which can be a 5 by 7 inch steel tube (although other sizes are used). However, other mounting structures could be used instead of the U-pin. The support includes a face plate 44, which is used to mount parallel right and left couplings 46. Each coupling can be a four-bar coupling, as shown in the figures. The double coupling is sometimes described having parallel upper links and parallel lower links, and the rear ends of the parallel links are pivotally mounted on frame 48 of row unit 40. Frame 48 includes a support for the seed dispenser air heater 42 and seed hopper 50, as well as a structure including a cable to mount a pair of soil compactors 58. Frame 48 is also mounted on a closure unit 54, which includes a pair of closing wheels 56A and 56B. Row unit 40 also includes a pair of opener discs 53. Although row unit 40 shown in Figures 2 and 3 is configured to be used with a bulk fill seed system, it is contemplated that row unit 40 have one or more row hoppers 50 in each of row 40 units. Exemplary views of row units with individual hoppers are illustrated and described in U.S. Patent Application No. 61 / 763,687, which is incorporated herein document in full.
    [046] As mentioned, implement 10 and row units 40 illustrated and described in Figures 1 to 3 include an air seed feeder 42 for individualizing and transporting a seed or other particulate material from the seed distribution source to the groove formed in the field before the closing wheels 56 close said groove.
    [047] A seed feeder 60 with members for access to the traditional air pressure source 62 and 63 is illustrated in Figures 3 and 4. The seed feeder 60 illustrated in Figures 3 and 4 includes a base or central housing 62 to accompany first and second seed disks positioned within said housing. In this way, the seed doser 60 is illustrated as a seed doser of the multi-hybrid seed type 60, in which the feeder is able to individualize and dispense at least two different types, hybrids or seed varieties by the seeder to measure. that it travels in the field. The central housing 62 is a member whose sides or ends are substantially mirrored. A first feeder housing 64 is illustrated positioned on one side, and a second feeder housing 66 is illustrated positioned on the opposite side of central housing 62. A first seed disk is positioned between the first feeder housing 64 and the central housing 62, and these components can be collectively called "first feeder", and a second seed disk is positioned in and between the second housing 66 and central housing 62, and these components can be collectively called "second feeder". In this configuration, it was standard to include a centralized or regional air pressure source to provide an air pressure, whether positive or negative, to the seed disk. The seed feeder 60 in a specific row unit (not shown) connects to the central or regional air pressure source via hoses, which are not illustrated in the figures. The hoses connect to a first member of the pressure source 65 and a second member of the pressure source 67, as shown in the figures. Thus, the hoses must sometimes extend over a substantially long distance. This can generate debris and an unwanted appearance for a seeder, in addition to adding a risk of pressure loss along the distance from the hose.
    [048] For example, hoses should extend from the centralized or regional air pressure source to row units located at the ends of the arms. When a centralized air pressure source is used, the pressure source can be positioned in the central frame of the seeder, as well as close to the bulk hoppers. On the other hand, regional air pressure sources can be positioned in each arm of a seeder. In either situation, specific row units can be positioned at a significant distance from said source of air pressure. Due to the distance, the air pressure may suffer a drop or loss between the source and the specific seed unit 60 of a row unit. Therefore, it is necessary that the pressure source has to be of greater power or provide a superior source to compensate for this drop. This can cause a great need for power or energy for a specific seeder.
    [049] In operation, the seed disks of the first 64 and second 66 feeders rotate within the seed dosing assembly 60 housing. The disks, like the disk 70 shown in Figure 6, include radial seed openings widely spaced 72. Seed openings 72 may vary according to the type of seed, seed variety, seed size, seed husk and the like to satisfy variations in the seed. Several seed openings 72 form a seed path 74, which is created when the seed disk 70 rotates. In addition, seed disk 70 may include channels 76, which can be used to help agitate a seed bank to direct seed from the seed bank towards seed openings 72 to help feeding the seed to the opening at the point of the pressure differential or positive pressure in order to temporarily adhere the seed to the opening 72. It should be borne in mind that, although the seed disk 70 is illustrated for exemplary purposes, others types of seed disc, including other configurations of seed openings, seed paths, channels and the like can be included with any of the embodiments and / or aspects of the invention, and the seed disk itself does not limit the invention . Instead, it is illustrated to help understand the invention.
    [050] Therefore, in use with a seed feeder 60, the seed disk 70 can rotate in such a way that the seed openings 72 pass through a seed bank first 68 or second 69 of the feeder 60. Adjacent to said seed banks 68 and 69, pressure source members 65 and 67 will begin to provide a positive or negative force to temporarily adhere a seed to a seed opening 72. Seed disk 70 continues to rotate to the point where it does not there is more pressure differential, such as up to an open region on both sides in the seed doser housing, the point where the seed is released from said seed opening. The seed is then dispensed from the seed dispenser, such as via a seed chute and / or seed tube, or other conveyor means. Such carrier means that can be used with the invention include those disclosed in U.S. Patent Application No. 14 / 619,758, which is hereby incorporated by reference in its entirety. However, it should be borne in mind that any type of seed for distribution can be used with the invention, including, but not limited to, seed belts, gutters, gravity, brushes, rollers or any multiples or combinations thereof. The seed is directed towards a furrow or ditch formed in the soil by the other components of the row unit in order to plant said seed at a desired location and depth, and with the desired spacing between subsequent and previous seeds.
    [051] In order to overcome the problems with long hoses and the risk of loss of air pressure, aspects of the invention can be seen in Figures 7 and 8, in which a system is proposed to eliminate the need for long hoses, which it will reduce debris and excess components in a tractor or implement, it will reduce the power or energy required and, at the same time, it will also increase the efficiency of the seed units of the row units. In addition, the aspects as they will be illustrated and described will allow almost infinite variability in the sowing of each of the seed units in the row unit, which will allow a sower to plant seed types, seed hybrids, seed varieties, seed populations. seed and similar variables, all within the same field and without exchanging sowing components, which will also help to increase the yield of a crop during a specific planting season. Therefore, as shown in Figures 7 and 8, aspects of the invention propose the integration of a pressure source to the row unit and / or seed metering unit. The integration of the pressure source will take advantage of the growing electronic or electrical resources of the seeders, as they move from purely mechanical configurations to more electrical configurations, starting to include, instead of the first, electric power sources, electric motors and other electrical components.
    [052] Therefore, Figures 7 and 8 illustrate a seed dosing assembly 80 with an integrated pressure source 88 operationally connected and integrated with it. The seed metering set 80 is substantially similar to that previously illustrated in that it includes a central housing 81. Connected to the central housing, there is a first housing of the metering 82, which covers a first assembled seed disk rotatingly on it (collectively called the first doser 82), as well as a second housing of the doser 84, which houses a second seed disk rotatably mounted on it (collectively called the second doser 84). In addition, the seed metering set 80 includes a first seed bank 86 to receive a seed that will be in-dividualized and dispensed by the first seed doser 82, as well as a second seed bank 87, for interaction and dispensing. one seed by means of the second seed doser 84.
    [053] Pressure source 88 can be an electrical supply pressure source, such as a fan or electric vacuum generator. Pressure source 88 may comprise an electric motor 90 and a vacuum fan or air source 92 connected thereto. Therefore, there will be no hoses extending along the seeder to connect to the seed feeders 82 and 84, and instead, there will be some kind of electrical connection between an electrical power source and the seed feeder assembly 80. However, as seed dispensers become increasingly powered by electricity, such as by electric motors, electricity will already be fed to the said seed dispenser and, therefore, little or no change will be made. the agricultural implement for the inclusion of the integrated pressure source 88. Pressure source 88, as mentioned, can be a source of positive pressure, such as a fan, or a source of negative pressure, such as a vacuum motor. For example, a vacuum assembly could be used in conjunction with electric motor 90 to provide the source of negative pressure. Examples of such vacuum motors could include electrically powered motors operating at 48 volts, with 10 to 15 amps needed to operate the motors. However, other types of fans, including placebo fans and other blowers, as well as other sources of vacuum or fan, could be used to provide air pressure to the seed metering 80. An example of such a motor that could be used with the invention consists of a brushless blower / pump from Domel model number 497.3.267, which is a low voltage motor (24 VDC, 36 VDC, 52 VDC). However, other models and manufacturers of positive or negative pressure fans could be used.
    [054] In addition, the seed metering set 80 shown in Figures 7 and 8 includes a first duct 94 and a second duct 96 extending widely between the pressure source 88 and part of the first metering 82 and the second metering 84. Therefore, according to some aspects of the invention, an integrated air pressure source (electric fan) could be used for the seed metering unit 80 that sucks air through the openings of a seed disk to load a seed into the disk (for example, a vacuum feeder). In other respects, an integrated air pressure source 88 (electric fan) for the seed donor 80 could be used to propel air through the seed disc openings to load a seed into the disc (for example, a seed metering device). positive pressure). The suction or propulsion of the air can be carried out through the ducts 94 and 96 from the fan 92 to provide air pressure to the discs housed inside the seed dosing housings 81, 82 and 84. For example, in some aspects of the invention, the simple pressure source 88 could be forked or otherwise divided between any number of ducts to provide air pressure simultaneously to the dosers 82 and 84. The simultaneous provision of air pressure will ensure that air pressure is present when either of the seed discs is triggered to individualize and dispense the seed fed from the seed bank 86, 87 without the pressure delay or delay developing to allow the seed to adhere to the seed disc. However, as will be seen, other aspects of the invention propose that a single pressure source 88, such as that illustrated in Figures 7 and 8, be controlled in such a way that the air pressure provided by the fan 82 is supplied to only one of the seed disks at a time, such as by deflectors, valves or the like. When more than two feeders are positioned in a specific row unit, additional ducts can extend in such a way that pressure source 88 also provides a simultaneous or controlled air flow to any additional seed feeder.
    [055] Pressure source 88 illustrated in Figures 7 and 8 enables independently adjustable vacuum / positive pressure systems. For example, different types, variety, hybrids and their seed counterparts may require different levels of air pressure in order to better adhere the seed to the seed opening as the seed disk rotates inside the doser housing. Therefore, the integration of the pressure source into the seed feeder and / or row unit will allow each seed feeder in each row unit with independent air pressure to provide the desired air pressure and / or the best pressure of air for the specific seed type being individualized and dispensed with the specific seed metering unit of a row unit.
    [056] The operation of the seed metering set 80 can be described as follows. Each seed disk housed within the central housing 81 and either the first housing of the feeder 82 or the second housing of the feeder 84 can be associated with a different type, hybrid, variety or similar seed. For example, two seed hybrids can be used in the field to satisfy varying field conditions. A seed supply can be operationally connected to each of the dosers 82 and 84, such as via individual shafts in the row unit, air seed delivery systems or some combination thereof. A seed is collected in the seed banks 86 and 87. Each of the seed feeders 82 and 84 can include an independently controlled electric motor to rotate the seed disk housed within the feeders 82 and 84. Pressure source 88 is included for exert air pressure on the seed feeders 82 and 84 as the seeder is transported across a field. As the seeder moves along the field, one of the seed units 82, 84 from a row unit operates based on the field conditions to plant one of the types, varieties and / or hybrids of associated seed. to the seed metering set 80. In addition, some row units may not even be activated, such as in places where the field should not be seeded. Pressure source 88 feeds pressure to one or both of the seed feeders 82 and 84, the seed feeder motors are driven to rotate, and the sheltered seed disk rotates through the associated seed bank to adjust seeds to the seed openings. A seed is individualized and dispensed from the seed dispenser in a groove. When the other seed associated with one of the other feeders is to be planted, the first seed feeder shuts down and the next seed feeder is triggered to start rotating through the seed bank in order to individualize a seed and dispense it from it . Pressure source 88 will be able to provide air source pressure to both seed feeders 82 and 84 (or more) in such a way that there will be no interruption in planting by the seed feeders in set 80 when a seed feeder specific seed interleaved with the other, such as from the first seed feeder 82 to the second seed feeder 84. In addition, as the integrated pressure source 88 is for power supply, the seed feeders of the set 80 can be controlled in a way independent when a different air pressure is needed when switching from one seed to another that will be planted by the seed donor set 80.
    [057] Furthermore, it should be borne in mind that, although two seed disks and seed metering units are associated with the seed metering set 80 shown in Figures 7 and 8, the invention is not limited to this situation or configuration. For example, the integration of the air pressure source into the seed feeder and / or row unit could be used with a seed feeder incorporating a single disc and feeder combination. In addition, the invention contemplates that the integration of the pressure source could be used with more than two seed feeders and seed disks associated with a specific row unit. In that situation, pressure source 88 would include additional air ducts extending between pressure source 88 and additional seed metering. However, as the pressure source is powered and integrated into a specific row unit, the seeder will have a cleaner appearance, be more efficient, will be independent and will offer other advantages, benefits and their similarities in compared to current situations. Other advantages evident to those skilled in the art will also be obtained.
    [058] Figures 9 and 10 illustrate a seed dosing assembly 100, which includes additional aspects of the invention. The seed metering set 100 shown in Figures 9 and 10, similar to the one previously illustrated and described, includes a central housing 101, a first seed doser housing 102 and a second seed doser housing 104. As before, the first seed doser housing 102 covers a seed disk that is rotatably mounted on it, and both can be collectively called the first seed doser. The second seed doser 104 also includes a seed disk rotatably mounted on it, and both can be collectively called the second seed doser 104 of the seed dosing assembly 100. In addition, a first seed bank 106 is associated with the first seed doser seed 102, and a second seed bank 107 is associated with the second seed doser 104.
    [059] In the configuration illustrated in Figures 9 and 10, each seed feeder 102, 104 includes a dedicated pressure source 103, 105 integrated for use with each individual seed feeder. For example, as shown in Figure 9, a pressure source 103 is integrated with the first seed feeder 102 and includes a first electric motor 110 and a first vacuum fan and / or another air source 112 including an exhaust fan 114. In addition , the second doser 104 includes a second air pressure source 105 comprising a second electric motor 115 and a second fan or other air source 116 including an exhaust fan 118. The seed metering assembly 100 illustrates aspects including two integrated air sources , one for each integrated feeder 102, 104, where each pressure source operates independently of the other for use when each feeder and air source are needed, that is, operated.
    [060] Pressure sources 103 and 105 are powered by electricity to allow independent and variable control of air pressure at each seed feeder in a specific row unit. Therefore, the specific pressure source may only need to be activated when a specific seed feeder is activated. For example, when a seed associated with the first seed feeder 102 is to be planted, the first pressure source 103 is activated to start providing air pressure, either positive or negative, to the seed feeder 102. Engine 110 activates the fan 112 to provide negative or positive pressure to the dispenser 102, with which the seeds adhere to openings in the disk that rotates inside it, as it rotates through the seed bank 106. The operation of the integrated pressure source 103 can be controlled and varied according to the desired and / or efficient operation of the seed feeder in order to better adhere a seed to the seed disk of the seed feeder 102. However, when the second seed feeder 104 must be activated, as as when a specific part of the field must receive a different type, variety and / or hybrid of seed, the first pressure source 103 can be turned off and the second pressure source 105 activated together with the seed doser 104. Therefore, the source d and pressure 105 can be activated together with the seed disk of the second doser 104 to provide a source of pressure within the doser 104 in order to adhere a seed to his seed disk, such as when the seed disk rotates through or adjacent to the seed bank 107. The second pressure source 105 can provide a different and variable amount and type of pressure compared to the first pressure source 103 in order to satisfy the different type, hybrid or variety of seed that is individualized and planted by the second seed doser 104. In addition, the first and second pressure sources can also provide the same or similar pressure types.
    [061] Although it has been mentioned that the first 102 and second 104 seed feeders, as well as the first 103 and second 105 pressure sources, operate one at a time, it should be borne in mind that the invention contemplates that the systems are always in operation with a deflector or other mechanism within the central seed doser 101 housing to only allow a single seed to be dispensed from it. For example, it can be advantageous and / or efficient to always supply a pressure source to a dispenser even though the said dispenser is not in use so that it can start its use without delay. Therefore, continuous pressure can be provided by the seed feeder that is not planting to satisfy this issue. However, the feeders could also operate independently in such a way that the pressure started instantly or slowly before the use of a specific seed feeder. All combinations are considered. In addition, it should be borne in mind that, although two seed donors and, therefore, two pressure sources are provided with the seed metering set 100 of Figures 9 and 10, the configuration, installation and use of the seed sources. pressure gauges, as illustrated in Figures 9 and 10, could be used with any number of seed feeders. For example, if more than two seed feeders are used in a row unit, an additional pressure source can be added for each additional seed feeder. The integration of an individual electrical pressure source can be used in part because the electric motors of each individual pressure source will not require much energy and, therefore, the seeder will not need any additional power source to operate the invention.
    [062] Figures 11 and 12 illustrate additional aspects of the invention, in which an electrical and integrated pressure source 128 is used to supply air pressure to two seed metering units 122 and 124 in a seed metering assembly 120 of a plant unit. row. The configuration includes a seed doser housing 121, seed banks 126 and 127 for feeding seeds to discs in the first 122 and second 124 seed dosers. The integrated pressure source 128 includes an electric motor 130 and a vacuum or other fan air source 132 to provide air pressure to the first 122 and second 124 seed feeders. In addition, a first duct 134 extends from the air pressure source 128 to the first seed feeder 122, and a second duct 136 extends from the air pressure source 128 to the second seed feeder 124.
    [063] However, the seed dosing assembly 120 shown in Figures 11 and 12 differs from those previously illustrated and described, such as the inclusion of valves or deflectors first 138 and second 139. For example, valves 138 and 139 can be used to selectively open and close air ducts 134 and 136 in such a way that the air pressure supplied by pressure source 128 is directed to only one of the seed dosers first 122 or second 124. In other words, an air source 128 incorporates the use of automated or manually operated control valves 138, 139 to direct air to or from one of two bifurcated paths to supply air to one of the two integrated seed feeders 122, 124. The inclusion of valves or deflectors 138, 139 will increase the efficiency of the air pressure generated by the source 128 in such a way that the total pressure generated by the source is dedicated to only one of the dosers 122, 124. This can provide efficiency to the doser of seed 120.
    [064] However, the valves can be opened, manually or automatically, to provide any number or variations in air pressure from air source 128 to any of the seed feeders 122, 124 through paths 134, 136. For For example, when one of said seed metering is in use, it may be desirable for the valve to open fully in order to provide a total amount of air pressure to said metering. Said other doser can be excluded completely from said air pressure, in such a way that all air pressure is dedicated to the seed doser in use. In some situations, the seed metering valve that is not in use can be slightly opened so that the air pressure starts to be fed to it. This will start to provide pressure to the seed feeder, such that when the feeder starts to operate, there is less delay or possibly no delay to adhere the seed to the seed disk in it. This can help to increase the efficiency of the system, particularly when interleaving between one seed feeder and another.
    [065] As mentioned, valves 138 and 139 can be automated in such a way that the system acts to automatically open or close a valve as a specific seed feeder is used. For example, seed dosers can be connected to a system, such as a GPS or other plotting system, to provide a specific seed type, variety or hybrid for planting at a specific location in the field. The valves can be included in the referred system so that they become aware or know that they must change from one seed being planted to another through the seed feeders. Therefore, when the first seed feeder 122 must shut down and the second seed feeder 124 must start operating, the valves can be alerted or made aware of this change and can automatically open and close the appropriate valve in order to provide pressure of air to the seed dispenser that will come into use. As mentioned, the use of valves to dedicate air pressure to one of the several seed metering devices associated with the system can increase efficiency, such as reducing the size of the fan or air source provider 132, as well as reducing the energy requirement of the engine 130, as requiring less pressure generated by the air pressure source 128. Furthermore, although the system is illustrated with two seed metering devices, it is envisaged that the inclusion of the valves will be incorporated into a seed metering device with any number of seed discs and feeders incorporated into it. Any addition of a duct and feeder may include the addition of an additional valve positioned in the duct or between the additional seed feeder and the pressure source.
    [066] Figure 13 illustrates yet other aspects of the invention. As Figure 13 illustrates, a seed metering assembly 140 is proposed that includes a housing for the metering 142, a seed bank 144 and a seed disk 146 with seed openings 148 therein. The seed disk 146 rotates within said seed doser housing 142. Although Figure 13 illustrates only one seed doser, it should be borne in mind that additional seed dosers can be included in the illustrated and described configuration, as in the configurations previously illustrated and described. Figure 13 also illustrates that the seed metering assembly 140 includes an electric and integrated pressure source 150 comprising an electric motor 152 and a vacuum fan or other air source 154. The integrated pressure source 150 is used to provide positive pressure or negative to the seed dispenser so that the seed 145 adheres to the seed openings 148, as shown in Figure 13.
    [067] However, additional aspects of Figure 13 include intake and exhaust filter systems for use with the air pressure source 150 and the seed metering set 140. An intake filter system 156 can be an integrated and electronic cyclonic dust separator. The cyclonic intake filtering system 156 includes or comprises a cyclone body 157, a cone body 158, a powder dump 159 and a fan inlet 160. The intake filter system 156 uses cyclonic separation to remove particulates from the air before it reaches the pressure source 150 and the seed dispenser.
    [068] In a cyclonic separation system, as shown in Figure 13, a high-speed air flow is established within the cyclone body 157. Air flows in a helical pattern, starting at the top of the cyclone body and ending at the lower end next to the cone body 158, before leaving the cyclone body in a straight line flow through the center of the cyclone body and exiting at the top. Larger particles, that is, more dense, in the rotating flow have too much inertia to follow the tight flow curve in the suddenly upward direction and crash against the outer wall of the cyclone body 157, causing them to fall to the bottom. base of the system, from where they can be removed or fall through the dust discharge 159. For example, as the helicoidal flow of air reaches the conical section 158, the air makes a closed upward curve and moves towards the entrance of the fan 160. The particles fall towards the dust discharge 159, from where they can be removed from the air flow. In a conical system, such as the one illustrated, as the rotating flow advances towards the conical section of the system, the rotational radius of the flow is reduced, thus separating smaller and smaller particles into the air. The cyclone geometry, together with the flow rate, defines the cyclone cutoff point. This is the particle size that will be removed from the stream at 50% efficiency. Particles larger than the cut-off point will be removed more efficiently and smaller particles less efficiently.
    [069] In the system illustrated in Figure 13, air enters, as shown, in the direction of arrow 162. This can be called "dirty air". The dirty air spins at high speed of rotation inside the cyclone body 157. As the air moves helically towards the conical section 158, the lighter air then makes a closed curve and rises towards the fan inlet 60 in a substantially straight row. The larger and / or denser particles inside the dirty air will not be able to make the curve and will fall through the dust dump 159. Therefore, the system 156 feeds clean or cleaner air through the inlet 160 and the vacuum source or fan 154 from the air pressure source 150. This "clean" air will pass from the source 154 to the doser housing 142 in the direction of arrow 155 to provide the pressure to adhere the seed 145 to the openings 148 of the seed disk 146. The air filtration system intake 156 reduces waste that would enter the air source, thereby increasing the durability of fan 154 and doser 140, while also increasing the efficiency of a seed's adhesion to the seed disk.
    [070] In addition, the configuration illustrated in Figure 13 also includes an exhaust filter system 165. The exhaust filter system 165 is also a cyclonic separation system, which comprises a cyclone body 166, a body cone 167, a waste compartment 168 and a clean exhaust port 169. The air that passes through the doser housing 142, as shown by arrow 164 in Figure 13, can assimilate powder or seed husks 145, which may contain airborne pesticides or other chemicals that may cause damage to the field or the environment. Therefore, it can be advantageous when planting a field to reduce the amount of pesticides or airborne chemicals that are introduced into the environment. As the air moves in the direction of arrow 164, it rotates at high speed inside the cyclone body 166. As with the intake filter system 156, the high-speed rotation of the air in the cyclone body 166 does cause the air to rotate helically towards conical section 167 of system 165. Near the base of conical section 167, the air turns sharply and exits in a substantially straight flow through the center of cyclone body 166 up through the exhaust orifice clean 169. Dust particles, peels, pesticides and / or other chemicals are denser or otherwise larger than air and will not be able to curve from conical section 167 upward through the exhaust orifice 169. Therefore, these denser particles will be directed through the conical section 167 to a compartment 168. That compartment can collect the said particles, in such a way that they are not introduced into the field or other environment and can am to be disposed of in an ecologically correct manner. Therefore, the cyclonic dust separator integrated into the exhaust of the seed metering 140 will also provide benefits such as protection of the environment.
    [071] Furthermore, it should be borne in mind that it is not necessary for both the intake and exhaust filter systems to be used in the same system. For example, in some situations, only the intake filter system is necessary for use with a specific seed feeder. In contrast, when planting a seed with a specific husk or using a specific pesticide, only the exhaust filter system needs to be used in order to protect the environment. In addition, any combination of the systems can be used. For example, although a cyclonic separation filtration system has been illustrated and described, it is envisaged that other types of filtration systems will be used with any of the seed metering systems that include an integrated air pressure source. For example, a system using filters instead of vortex separation could be equipped with a specific seed feeder to clean a system's air intake or exhaust. Such systems could include the use of filters to remove solid particles such as dust, pollen or other chemicals from the air. Chemical air filters could also be used. The invention is not limited to the specific configuration illustrated and described.
    [072] Then, a sowing implement was illustrated and described that includes seed metering units with an electric air pressure source integrated into each row unit and / or seed metering unit to provide the dosing pressure differential in order to to help adhere a seed to a seed disk for planting. The invention contemplates numerous variations, options and alternatives and is not limited to the specific exemplary embodiments described in this document. For example, several other types of engines, fans, air sources, filtration systems, seed dosers, seed discs, seed types, seed varieties and seed hybrids and the like should all be included as part of the invention. In addition, it should be borne in mind that any aspect can be used with any type of seed, including hybrid, type, variety or similar seed. This includes, among others, maize, soy, cotton, corn, as well as virtually any other crop. Those skilled in the art will notice several other changes that can be included and still remain within the scope of the invention.
    权利要求:
    Claims (20)
    [0001]
    1. Seed dispenser (60, 80, 100, 120, 140) for use in a row unit (40) of an agricultural implement (10), FEATURED for comprising: a housing (62, 81, 101, 121, 142 ) comprising a seed disk side (70, 146) and a vacuum side, said vacuum side comprising a conduit for directing a vacuum pressure; at least one seed disk (70, 146) rotationally positioned within the housing (62, 81, 101, 121, 142) and including a plurality of seed openings (72, 148) comprising a seed path, said seed disk seed (70, 146) positioned with a seed side adjacent to the seed disk side (70, 146) of the housing (62, 81, 101, 121, 142); and an integrated electric fluid pressure source (88, 103, 105, 128, 150) positioned in the housing (62, 81, 101, 121, 142) and configured to provide a pressure differential for the seed openings (72, 148) from the seed path to temporarily adhere a seed; wherein the housing conduit (62, 81, 101, 121, 142) directs a vacuum pressure on an opposite side of the seed disk (70, 146) to the seed side.
    [0002]
    2. Seed dispenser (60, 80, 100, 120, 140), according to claim 1, CHARACTERIZED by additionally comprising the first and second seed discs (70, 146) rotationally positioned inside the housing (62, 81, 101, 121, 142), with each disc (70, 146) comprising the plurality of openings (72, 148).
    [0003]
    3. Seed dispenser (60, 80, 100, 120, 140) according to claim 2, CHARACTERIZED that the fluid pressure source (88, 103, 105, 128, 150) comprises an electric fan (92, 112, 116, 132, 154) attached to the housing (62, 81, 101, 121, 142) to draw air through the seed openings (72, 148) of the seed discs (70, 146).
    [0004]
    4. Seed dispenser (60, 80, 100, 120, 140) according to claim 2, CHARACTERIZED that the source of fluid pressure (88, 103, 105, 128, 150) comprises an electric fan (92, 112, 116, 132, 154) attached to the housing (62, 81, 101, 121, 142) to push air through the seed openings (72, 148) of the seed discs (70, 146).
    [0005]
    5. Seed dispenser (60, 80, 100, 120, 140) according to claim 2, CHARACTERIZED in that the source of fluid pressure (88, 103, 105, 128, 150) comprises a first dedicated source (103 ) to provide a pressure differential for the first disk, and a second dedicated source (105) to provide a pressure differential for the second disk.
    [0006]
    6. Seed dispenser (60, 80, 100, 120, 140), according to claim 5, CHARACTERIZED that the first and second sources (103, 105) are positioned in the housing (62, 81, 101, 121, 142 ).
    [0007]
    7. Seed dispenser (60, 80, 100, 120, 140) according to claim 2, CHARACTERIZED that the source of fluid pressure (88, 103, 105, 128, 150) comprises an electric fan (92, 112, 116, 132, 154) and a deflector (138, 139) operationally attached to the fan (92, 112, 116, 132, 154), where the deflector (138, 139) separates the fluid pressure from the fan (92 , 112, 116, 132, 154) simultaneously between the first and second disks (70, 146).
    [0008]
    8. Seed dispenser (60, 80, 100, 120, 140) according to claim 2, CHARACTERIZED that the source of fluid pressure (88, 103, 105, 128, 150) comprises an electric fan (92, 112, 116, 132, 154) and a deflector (138, 139) operationally attached to the fan (92, 112, 116, 132, 154), where the deflector (138, 139) separates the fluid pressure from the fan (92 , 112, 116, 132, 154) for only one of the first or second seed disks (70, 146).
    [0009]
    9. Seed doser (60, 80, 100, 120, 140), according to claim 8, CHARACTERIZED that the deflector (138, 139) is an automated control valve to selectively supply the fluid pressure between the disc of seed (70, 146) that is operating to direct a seed to the soil.
    [0010]
    10. Seed dispenser (60, 80, 100, 120, 140), according to claim 1, CHARACTERIZED by additionally comprising a cyclonic dust separation system (156) attached to the seed dispenser (60, 80, 100, 120, 140) for the fluid pressure source (88, 103, 105, 128, 150) and configured to reduce waste within the seed doser (60, 80, 100, 120, 140).
    [0011]
    11. Seed dispenser (60, 80, 100, 120, 140), according to claim 10, CHARACTERIZED in that the cyclonic dust separation system (156) comprises a cyclone body (157) and a fall chute ( 159) operationally attached to a fan (92, 112, 116, 132, 154) and an electric motor (152) of the fluid pressure source (88, 103, 105, 128, 150).
    [0012]
    12. Seed feeder (60, 80, 100, 120, 140), according to claim 1, CHARACTERIZED by additionally comprising a cyclonic dust separation system (156) from the exhaust fixed to a seed feeder extractor (60 , 80, 100, 120, 140) to capture exhaust air from the dispenser (60, 80, 100, 120, 140).
    [0013]
    13. Seed doser (60, 80, 100, 120, 140), according to claim 12, CHARACTERIZED in that the exhaust cyclone dust separation system (156) comprises an exhaust cyclone body (157), a waste compartment (168) and an exhaust hole (169).
    [0014]
    14. Row unit (40) of an agricultural implement (10), FEATURED for comprising: a seed feeder (60, 80, 100, 120, 140) comprising at least one housing (62, 81, 101, 121, 142 ), said at least one housing (62, 81, 101, 121, 142) comprising a seed disk side (70, 146) and a vacuum side, said vacuum side comprising a conduit for directing a pressure of vacuum; at least one seed disk (70, 146) rotationally positioned within the at least one housing (62, 81, 101, 121, 142) and including a plurality of seed opening (72, 148) comprising a seed path, the said seed disk (70, 146) positioned with a seed side adjacent to the side of the seed disk (70, 146) of the housing (62, 81, 101, 121, 142); and an integrated electric fluid pressure source (88, 103, 105, 128, 150) positioned in the row unit (40) and configured to provide a pressure differential for the seed openings (72, 148) of the seed path to temporarily adhere a seed by directing a vacuum source from the electrical fluid pressure source (88, 103, 105, 128, 150) through the conduit towards the seed disk (70, 146).
    [0015]
    Row unit (40) according to claim 14, CHARACTERIZED that the electric fluid pressure source (88, 103, 105, 128, 150) provides a negative pressure in the seed openings (72, 148) for adhere seed.
    [0016]
    16. Row unit (40), according to claim 14, CHARACTERIZED that the electric fluid pressure source (88, 103, 105, 128, 150) provides a positive pressure in the seed openings (72, 148) for adhere seed.
    [0017]
    17. Row unit (40) according to claim 14, CHARACTERIZED that said source of electric fluid pressure (88, 103, 105, 128, 150) is mounted in the housing (62, 81, 101, 121, 142) seed doser (60, 80, 100, 120, 140).
    [0018]
    18. Agricultural implement (10), FEATURED for comprising: a plurality of row units (40) operationally attached to a tool bar, each of said row units (40) including at least one housing (62, 81, 101 , 121, 142) of seed doser (60, 80, 100, 120, 140) to substantially enclose at least one seed doser (60, 80, 100, 120, 140) configured to choose and dispense seed, the said each one of the at least one seed doser housing (62, 81, 101, 121, 142) (60, 80, 100, 120, 140) comprising a seed side and a pressure side with said pressure side including a conduit to direct pressure towards an interior of the housing (62, 81, 101, 121, 142); and an integrated electric fluid pressure source (88, 103, 105, 128, 150) operationally connected to the conduit of at least one housing (62, 81, 101, 121, 142) and configured to provide a pressure differential for at least at least a portion of an interior of at least one seed doser housing (60, 80, 100, 120, 140) to encourage the seed to temporarily adhere to a seed disk (70, 146) positioned thereon.
    [0019]
    19. Agricultural implement (10) according to claim 18, CHARACTERIZED that the integrated electrical fluid pressure source (88, 103, 105, 128, 150) comprises a source of negative or positive pressure.
    [0020]
    20. Agricultural implement (10), according to claim 18, CHARACTERIZED by additionally comprising: a) a cyclonic dust separation system (156) attached to the seed doser (60, 80, 100, 120, 140) for the fluid pressure source (88, 103, 105, 128, 150) and configured to reduce waste within the seed doser (60, 80, 100, 120, 140); and b) a cyclonic dust separation system (156) from the exhaust fixed to a seed metering hood (60, 80, 100, 120, 140) to capture the metering exhaust air to reduce seed waste from the same.
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    同族专利:
    公开号 | 公开日
    US20180000005A1|2018-01-04|
    EP3125669A1|2017-02-08|
    AR100493A1|2016-10-12|
    WO2015154070A1|2015-10-08|
    CA2944670C|2018-10-23|
    US20210251129A1|2021-08-19|
    US20190166755A1|2019-06-06|
    US10206327B2|2019-02-19|
    US9763380B2|2017-09-19|
    EP3125669B1|2018-07-25|
    US20150282422A1|2015-10-08|
    US11026363B2|2021-06-08|
    CA2944670A1|2015-10-08|
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    法律状态:
    2019-09-10| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-07-07| B06A| Notification to applicant to reply to the report for non-patentability or inadequacy of the application [chapter 6.1 patent gazette]|
    2021-01-05| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-03-16| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 06/04/2015, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US201461975047P| true| 2014-04-04|2014-04-04|
    US61/975,047|2014-04-04|
    PCT/US2015/024489|WO2015154070A1|2014-04-04|2015-04-06|Row unit with integrated pressure source|
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