WO2013156007A1 - Device for individual metering - Google Patents
Device for individual metering Download PDFInfo
- Publication number
- WO2013156007A1 WO2013156007A1 PCT/CZ2013/000052 CZ2013000052W WO2013156007A1 WO 2013156007 A1 WO2013156007 A1 WO 2013156007A1 CZ 2013000052 W CZ2013000052 W CZ 2013000052W WO 2013156007 A1 WO2013156007 A1 WO 2013156007A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- belt
- individual metering
- suspension
- seed
- seed grains
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C7/00—Sowing
- A01C7/04—Single-grain seeders with or without suction devices
- A01C7/042—Single-grain seeders with or without suction devices using pneumatic means
Definitions
- the invention relates to a device for individual metering, specifically for the individual metering of seed grains mounted on a sowing machine, particularly on a sowing machine for precise sowing.
- metering device which acts as a seed grain metering device.
- the metering device may be in the form of a drum, disc or similar rotating geometry with a perforated surface. Thanks to varying air pressures on either each side of the perforated surface, seed grains become attached to it. Seeds become attached to the perforations in the direction of the pressure gradient.
- EP 0598636 is an example of the known individual metering device for precise sowing made in the form of a drum. Its disadvantages are its large mounting dimensions, the problems of sealing a rotating drum within in the casing of the seed hopper, and its high price.
- the aim of the invention is a device constructed so that it will be able to individually meter seed grains and provide precise spacing between the individual seed grains, thereby removing the above-mentioned shortcomings of current state of the art technology.
- an individual metering device specifically by an individual seed grain metering device arranged on a sowing machine, comprising at least one moving means with an individual metering device using air pressure gradients to attach seed grains, at least one suspension space for the suspension of seed grains, and at least one seed grain hopper, according to the invention characterized by that the individual metering device is at least one belt containing at least one row of openings.
- the individual metering device is at least one belt containing at least one row of openings.
- the chamber contains at least one elongated opening, which is adjacent inside the belt at the place where the belt has rows of openings.
- compressed air which is at a lower pressure than that in the adjoining space passes through the openings on the belt as it moves through the chamber. Thanks to the pressure gradient and the elasticity of the belt there is a natural seal between the belt and the chamber. This allows for considerable design simplification and allows the mounting dimensions of the entire individual metering to be minimalized.
- the belt is spatially located in contact with the suspension space for the suspension of seed grains, so that the seed grains come into contact with the openings of the belt against the direction of gravity. This allows for improved circulation of the unattached seed grains, which return by gravity, back to the area below the belt where they are again accelerated by help of an injector in the direction of the belt.
- the individual metering device further contains at least one injector with a diffuser arranged between the seed grain hopper the seed grain uptake area, and so to advantage that the individual metering device contains a regulated airflow injector with a diffuser, which is regulated by the flow of air in respect to the speed of the belt.
- This arrangement allows for optimum uplift of the seed grains needed for the smooth grain seed attachment to the moving belt.
- Another advantage is the possibility to give direction and speed of movement of the seed grains towards the belt and in the direction the belt is moving, while it is also to advantage if an airflow rectifier of the seed grains regulates their output speed so that it is approximately equal to the speed of the belt.
- the belt is supported by at least one cylinder, in which a belt driven device is stored to advantage.
- the individual metering device also includes a seed duct adjacent to the outer side of the belt.
- the seed duct is with air pressure lower than that in the suspension space for seed grain suspension, which is adjacent to the outer edge of the belt at the place where its ends up inside the chamber with lower air pressure than that in the suspension space for the suspension of the seed grains.
- At least one metering element is adjacent to the outer edge of the belt which ensures removal of additional seed grains, in the case where more than one grain attaches to one opening.
- the strip contains at least two rows of openings, which are offset against each other along the length of the belt.
- the metering device includes at least two individual metering means between which a seed grain hopper is arranged.
- the advantage of the individual metering device as per the invention compared to individual metering devices in the shape of a drum is that the seed grains are attached to the openings on the belt which moves in a straight line, whereas with the drum, the openings move round in a circle, which is especially useful in sorting and individually metering seed grains.
- Another advantage is that the area on which it is possible to attach the seed grains is longer than on the drum, which space in which provides more time to attach and individually meter grains and so increases the overall efficiency of the metering device.
- a further great advantage of the individual metering device as per the invention is also that there is a more favourable ratio of dimension to size of the individual sides compared to the drum. So, it can be advantageously placed at the sides of the seed grain hopper which is executed in the form of a receiving hopper. Dead space created by the need for receiving hopper pouring can be used thus allowing for very favourable overall dimensions of the sowing machine.
- Another advantage is a simple mechanism to override drops in pressure in the openings on the belt which happens at the ends of the chamber located on the inner edge of the belt without having to add additional complicated mechanisms to override drops in the pressure gradient.
- the openings in the belt may be arranged in several rows, which are arranged following in an endless loop. Several rows of openings can be used for one sowing coulters of holes, thereby increasing the frequency of seed grains going to the coulter, and one or more rows of openings can be used for one sowing coulter. When joining several rows of openings into one coulter, individual rows of perforations located across from each other can be used to advantage.
- An advantage of using a belt compared to other known solutions is the possibility to use flexible supple material thus allowing for better adhesion of seeds to the opening perforations.
- the advantage of the flexible supple belt compared to the steel drum is the gentleness to seed grains, whereby grains are not damaged during individual metering.
- a further great advantage of the individual metering device as per the invention compared to devices using the metering drum is also manufacturing cost. Especially, when different sizes of openings are needed for sowing various sized grains, the cost advantage clearly stands out.
- the solution is an easy to change and relatively very inexpensive to produce belt.
- FIG. 1 shows in a schematic side cross section configuration of the equipment with a single metering device and one hopper
- Fig. 2 shows the general arrangement of the individual metering device in an axonometric view with a partial cross section view
- Fig. 3 shows a close-up view of the transfer of seed grain from the metering device to the seed grain duct
- Fig. 4 shows a schematic view of the arrangement of the metering device, which includes two individual metering means arranged on the sides of the hopper in the form of a receiving hopper
- Fig. 5 shows a detail of the arrangement of a metering device with a cross section revealing longitudinal holes made on the surface of the chamber.
- the device for individual metering of seed grain 4 (Fig. 1 , Fig. 2) is arranged on a sowing machine comprising at least one moving means with an individual metering device 1 using air pressure gradients to attach seed grains 4, at least one suspension space 5 of seed grains 4, and at least one seed grain 4 hopper 7.
- the individual metering device 1 is a belt 2 containing a row of openings 3.
- the belt 2 is spatially located in contact with the suspension space 5 for the suspension of seed grains 4 so that the seed grains 4 are received against the direction of gravity.
- 1 of the belt 2 adjoining the chamber 8 the air pressure is lower than in the suspension space 5 for the suspension of seed grains 4, which is connected to a not shown source of vacuum.
- the chamber 8 (Fig. 5) contains an entire row of longitudinal openings 6 which are adjacent to the belt 2 at the point where the belt 2 includes rows of openings 3.
- injectors 9 with diffusers which are connected to a source H of compressed air. Air flow passing through the injectors 9 with diffusers is regulated in respect to the speed of the belt 2.
- An endless loop belt 2 is placed a pair of rollers 6, of which one is a driving device.
- the outer side 12 of the belt 2 (Fig. 3) is adjacent to the point where its inner edge 11 at the end of the chamber 8, with air pressure less than that in the suspension space 5 for the suspension of seed grains 4, the seed ducts 0 with air pressure lower than that in the suspension space 5 for the suspension of seed grains 4.
- each row of openings 3 is adjacent to a single metering element 13.
- the hopper 7 space for seed grains 4 is closed by a lid 15 from above.
- the device for individual metering seed grain 4 (Fig. 1 , Fig 4) is arranged on a sowing machine, which includes a pair of individual metering devices 1 for attaching seed grains 4 using air pressure gradient, between which is arranged a hopper 7 for seed grains 4. For each individual metering device 1, there is one on the suspension space 5 for suspension of the seed grains 4.
- the individual metering device_l has belts 2 containing rows of openings 3 which are located opposite to each other along the length of the belt 2.
- Each belt 2 is spatially arranged in contact with the suspension space 5 for the suspension of seed grains 4 so that the seed grains 4 are received against the direction of gravity.
- the air pressure is less than that in the suspension space 5 for suspension of the seed grains 4, which is connected to a vacuum source not shown.
- Each of the chambers 8 (Fig. 5) contains a number of longitudinal openings 16 which are adjacent to the belt 2 at the point where the belt 2 has a row of openings 3.
- injectors 9 with diffusers which are connected to the source 14 of compressed air. Air flow passing through the injectors 9 with diffusers is regulated in respect to the speed of the belt 2.
- the belts 2 are shown as endless loops, and are stored on a pair of rollers 6, of which one is a driving device.
- the outer side 12 of the belt 2 (Fig. 3) is adjacent to the point where its inner side JM ends in the chamber 8, with air pressure lower than in the suspension space 5 for the suspension of seed grains 4, and in the seed ducts 10, the air pressure is lower than in the suspension space_5 for the suspension of seed grains 4.
- the outer side 12 of the belts 2 is adjacent to each row of holes 3 of the individual metering element 13.
- the hopper 7 space for grain seed 4 storage is covered from above by a lid 15.
- the device for individual metering can be used specifically for precise sowing.
Abstract
A device for individual metering, specifically a device for the individual metering of seed grains (4) arranged on a sowing machine comprising of at least one moving individual metering device (1) using a drop in air pressure to attach grains seeds (4) air pressure drop, at least one suspension space (5) for the suspension of seed grains (4) and at least one hopper (7) of seed grains (4), where the individual metering device (1) is at least one belt (2) containing at least one row of openings (3), while the inner side (11) of the belt (2) adjoining the chamber (8), the air pressure is lower than in the suspension space (5) for the suspension of seed grains (4).
Description
Device for individual metering Technical Field
The invention relates to a device for individual metering, specifically for the individual metering of seed grains mounted on a sowing machine, particularly on a sowing machine for precise sowing.
State of the Art
Currently known machines for precision sowing contain a metering device which acts as a seed grain metering device. The metering device may be in the form of a drum, disc or similar rotating geometry with a perforated surface. Thanks to varying air pressures on either each side of the perforated surface, seed grains become attached to it. Seeds become attached to the perforations in the direction of the pressure gradient.
From the patent document EP 0598636 is an example of the known individual metering device for precise sowing made in the form of a drum. Its disadvantages are its large mounting dimensions, the problems of sealing a rotating drum within in the casing of the seed hopper, and its high price.
Similar devices are also known, for example that from the patent document EP 2289298. This device has the same disadvantages as those described above.
Other state of the art structures for individual seed metering are also known which do not work on the principle of capturing seed grains pneumatically. They do not, however, provide the accuracy of the sowing devices of the above patent documents, and so are not useable for precise to sowing machines.
From the above noted state of the art, there are many obvious disadvantages, and the main disadvantages of the current state of the art are the large mounting dimensions and high cost of known structures using an individual metering device in the form of a steel drum.
The aim of the invention is a device constructed so that it will be able to individually meter seed grains and provide precise spacing between the individual seed grains, thereby removing the above-mentioned shortcomings of current state of the art technology.
Principle of the Invention
The mentioned deficiencies to a large part removed and the objectives of the invention fulfilled by an individual metering device, specifically by an individual seed grain metering device arranged on a sowing machine, comprising at least one moving means with an individual metering device using air pressure gradients to attach seed grains, at least one suspension space for the suspension of seed grains, and at least one seed grain hopper, according to the invention characterized by that the individual metering device is at least one belt containing at least one row of openings. Using a belt as the individual metering means significantly reduces the mounting dimensions of the individual metering device, while, due to the fact that the belt is made of soft pliable material, it very gently transports the seed grains. The seed grains are attached to the openings on the belt by means of a pressure gradient, which is achieved by the fact that the air pressure of the adjoining chamber inside of the belt is lower than that in the suspension space for suspension of the seed grains.
To advantage, the chamber contains at least one elongated opening, which is adjacent inside the belt at the place where the belt has rows of openings. Through the elongated opening, compressed air which is at a lower pressure than that in the adjoining space passes through the openings on the belt as it moves through the chamber. Thanks to the pressure gradient and the elasticity of the belt there is a natural seal between the belt and the chamber. This allows for considerable design simplification and allows the mounting dimensions of the entire individual metering to be minimalized.
In terms of the overall layout and design of the sowing machine, to increase gentleness of the conveying of the seed grains, it is advantageous if the belt is spatially located in contact with the suspension space for the suspension of seed grains, so that the seed grains come into contact with the openings of the belt against the direction of gravity. This allows for improved circulation of the unattached seed grains, which return by gravity, back to the area below the belt where they are again accelerated by help of an injector in the direction of the belt.
It is also to advantage when the individual metering device further contains at least one injector with a diffuser arranged between the seed grain hopper the seed
grain uptake area, and so to advantage that the individual metering device contains a regulated airflow injector with a diffuser, which is regulated by the flow of air in respect to the speed of the belt. This arrangement allows for optimum uplift of the seed grains needed for the smooth grain seed attachment to the moving belt. Another advantage is the possibility to give direction and speed of movement of the seed grains towards the belt and in the direction the belt is moving, while it is also to advantage if an airflow rectifier of the seed grains regulates their output speed so that it is approximately equal to the speed of the belt.
In advantageous arrangement, the belt is supported by at least one cylinder, in which a belt driven device is stored to advantage.
In the most advantageous arrangement there is an endless loop belt, revolving around and stored on a pair of rollers, of which at least one is a drive roller.
To advantage, the individual metering device also includes a seed duct adjacent to the outer side of the belt. In the most advantageous arrangement, the seed duct is with air pressure lower than that in the suspension space for seed grain suspension, which is adjacent to the outer edge of the belt at the place where its ends up inside the chamber with lower air pressure than that in the suspension space for the suspension of the seed grains.
It is also advantageous if at least one metering element is adjacent to the outer edge of the belt which ensures removal of additional seed grains, in the case where more than one grain attaches to one opening.
It is also to advantage that the strip contains at least two rows of openings, which are offset against each other along the length of the belt.
It is also very advantageous from the perspective of the overall structural arrangement of the sowing machine when the metering device includes at least two individual metering means between which a seed grain hopper is arranged.
This can significantly reduce the overall dimensions of the sowing machine and thus significantly reduce its production costs.
The advantage of the individual metering device as per the invention compared to individual metering devices in the shape of a drum is that the seed grains are attached to the openings on the belt which moves in a straight line, whereas with the drum, the openings move round in a circle, which is especially useful in sorting and individually metering seed grains. Another advantage is that the
area on which it is possible to attach the seed grains is longer than on the drum, which space in which provides more time to attach and individually meter grains and so increases the overall efficiency of the metering device.
A further great advantage of the individual metering device as per the invention is also that there is a more favourable ratio of dimension to size of the individual sides compared to the drum. So, it can be advantageously placed at the sides of the seed grain hopper which is executed in the form of a receiving hopper. Dead space created by the need for receiving hopper pouring can be used thus allowing for very favourable overall dimensions of the sowing machine.
Another advantage is a simple mechanism to override drops in pressure in the openings on the belt which happens at the ends of the chamber located on the inner edge of the belt without having to add additional complicated mechanisms to override drops in the pressure gradient.
It is also to advantage that the openings in the belt may be arranged in several rows, which are arranged following in an endless loop. Several rows of openings can be used for one sowing coulters of holes, thereby increasing the frequency of seed grains going to the coulter, and one or more rows of openings can be used for one sowing coulter. When joining several rows of openings into one coulter, individual rows of perforations located across from each other can be used to advantage.
An advantage of using a belt compared to other known solutions is the possibility to use flexible supple material thus allowing for better adhesion of seeds to the opening perforations. The advantage of the flexible supple belt compared to the steel drum is the gentleness to seed grains, whereby grains are not damaged during individual metering.
A further great advantage of the individual metering device as per the invention compared to devices using the metering drum is also manufacturing cost. Especially, when different sizes of openings are needed for sowing various sized grains, the cost advantage clearly stands out. When using the device as per the invention, the solution is an easy to change and relatively very inexpensive to produce belt.
Overview of the Figures
The invention will be further elucidated using drawings, in which Fig. 1 shows in a schematic side cross section configuration of the equipment with a single metering device and one hopper, Fig. 2 shows the general arrangement of the individual metering device in an axonometric view with a partial cross section view, Fig. 3 shows a close-up view of the transfer of seed grain from the metering device to the seed grain duct, Fig. 4 shows a schematic view of the arrangement of the metering device, which includes two individual metering means arranged on the sides of the hopper in the form of a receiving hopper, and Fig. 5 shows a detail of the arrangement of a metering device with a cross section revealing longitudinal holes made on the surface of the chamber.
Examples of the Performance of the Invention
Example 1
The device for individual metering of seed grain 4 (Fig. 1 , Fig. 2) is arranged on a sowing machine comprising at least one moving means with an individual metering device 1 using air pressure gradients to attach seed grains 4, at least one suspension space 5 of seed grains 4, and at least one seed grain 4 hopper 7.
The individual metering device 1 is a belt 2 containing a row of openings 3.
The belt 2 is spatially located in contact with the suspension space 5 for the suspension of seed grains 4 so that the seed grains 4 are received against the direction of gravity.
The inner side |1 of the belt 2 adjoining the chamber 8, the air pressure is lower than in the suspension space 5 for the suspension of seed grains 4, which is connected to a not shown source of vacuum.
The chamber 8 (Fig. 5) contains an entire row of longitudinal openings 6 which are adjacent to the belt 2 at the point where the belt 2 includes rows of openings 3.
Between the seed grain 4 hopper 7 and the suspension space 5 for the suspension of seed grains 4 are arranged injectors 9 with diffusers which are connected to a source H of compressed air. Air flow passing through the injectors 9 with diffusers is regulated in respect to the speed of the belt 2.
An endless loop belt 2 is placed a pair of rollers 6, of which one is a driving device.
The outer side 12 of the belt 2 (Fig. 3) is adjacent to the point where its inner edge 11 at the end of the chamber 8, with air pressure less than that in the suspension space 5 for the suspension of seed grains 4, the seed ducts 0 with air pressure lower than that in the suspension space 5 for the suspension of seed grains 4.
On the outer edge 12 of the belt 2, each row of openings 3 is adjacent to a single metering element 13.
The hopper 7 space for seed grains 4 is closed by a lid 15 from above.
Example 2
The device for individual metering seed grain 4 (Fig. 1 , Fig 4) is arranged on a sowing machine, which includes a pair of individual metering devices 1 for attaching seed grains 4 using air pressure gradient, between which is arranged a hopper 7 for seed grains 4. For each individual metering device 1, there is one on the suspension space 5 for suspension of the seed grains 4.
The individual metering device_l has belts 2 containing rows of openings 3 which are located opposite to each other along the length of the belt 2.
Each belt 2 is spatially arranged in contact with the suspension space 5 for the suspension of seed grains 4 so that the seed grains 4 are received against the direction of gravity.
On inner side JM of each belt 2 adjacent to the chamber 8, the air pressure is less than that in the suspension space 5 for suspension of the seed grains 4, which is connected to a vacuum source not shown.
Each of the chambers 8 (Fig. 5) contains a number of longitudinal openings 16 which are adjacent to the belt 2 at the point where the belt 2 has a row of openings 3.
Between the hopper 7 for seed grains 4 and the suspension space 5 for the suspension of seed grains 4 there are arranged injectors 9 with diffusers which are connected to the source 14 of compressed air. Air flow passing through the injectors 9 with diffusers is regulated in respect to the speed of the belt 2.
The belts 2 are shown as endless loops, and are stored on a pair of rollers 6, of which one is a driving device.
The outer side 12 of the belt 2 (Fig. 3) is adjacent to the point where its inner side JM ends in the chamber 8, with air pressure lower than in the suspension space 5 for the suspension of seed grains 4, and in the seed ducts 10, the air pressure is lower than in the suspension space_5 for the suspension of seed grains 4.
The outer side 12 of the belts 2 is adjacent to each row of holes 3 of the individual metering element 13.
The hopper 7 space for grain seed 4 storage is covered from above by a lid 15.
Industrial Application
The device for individual metering can be used specifically for precise sowing.
List of Reference Marks
1 individual metering device
2 belt
3 opening
4 grain seed
5 suspension space
6 roller
7 hopper
8 chamber
9 injector with diffuser
10 seed duct
11 inner side
12 outer edge
13 individual metering element
14 source of compressed air
15 lid
16 longitudinal opening
Claims
1. A device for individual metering, specifically a device for the individual metering of seed grains (4) arranged on a sowing machine comprising of at least one moving individual metering device (1) using a drop in air pressure to attach seed grains (4) air pressure drop, at least one suspension space (5) for the suspension of seed grains (4) and at least one hopper (7) of seed grains (4), characterized by that the individual metering device (1) is at least one belt (2) containing at least one row of openings (3), while the inner side (11) of the belt (2) adjoining the chamber (8), the air pressure is lower than in the suspension space (5) for the suspension of seed grains (4).
2. The device for individual metering according to claim 1 , characterized by that a belt (2) is spatially arranged in contact with the suspension space (5) for the suspension of seed grains (4), to receive seed grains (4) against the direction of gravity.
3. The device for individual metering according to any of the preceding claims, characterized by that the chamber (8) comprises at least one longitudinal opening (16), which adjoins the belt (2) at the point where it contains a row of opeings (3).
4. The device for individual metering according to any of the preceding claims, characterized by that it further comprises at least one injector (9) with a diffuser arranged between the hopper (7) of seed grains (4) of seed and the suspension space (5) for the suspension of seed grains (4).
5. The device for individual metering according to claim 4, characterized by that it further comprises a regulating air flow injector (9) with a diffuser, which is controlled by the air flow in respect to the speed of the belt (2).
6. The device for individual metering according to any of the preceding claims, characterized by that the belt (2) is mounted on at least one cylinder (6).
7. The device for individual metering according to any of the preceding claims, characterized by that the belt (2) is an infinite loop.
8. The device for individual metering according to any of the preceding claims, characterized by that it further comprises seed duct ( 0) adjacent to the outer edge (12) of the belt (2).
9. The device for individual metering according to claim 7, characterized by that in the seed duct (10) the air pressure is lower than that in the suspension space (5) for the suspension of seed grains (4), which is adjacent to the outer edge (12) of the belt (2) at the point where the inner edge (11) ends in a vacuum chamber (8).
10. The device for individual metering according to any of the preceding claims, characterized by that it further comprises at least one individual metering element (13) adjacent to the outer edge (12) of the belt (2).
11. The device for individual metering according to any of the preceding claims, characterized by that the belt (2) contains at least two rows of openings (3), which are located across from each other along the length of the belt (2).
12. The device for individual metering according to any of the preceding claims, characterized by that, it contains at least two individual metering devices (1) which are arranged with the hopper (7) of grain seeds (4) between them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP13720755.1A EP2838335A1 (en) | 2012-04-20 | 2013-04-17 | Device for individual metering |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CZ20120278A CZ2012278A3 (en) | 2012-04-20 | 2012-04-20 | Singling apparatus |
| CZPV2012-278 | 2012-04-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2013156007A1 true WO2013156007A1 (en) | 2013-10-24 |
Family
ID=48325326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CZ2013/000052 WO2013156007A1 (en) | 2012-04-20 | 2013-04-17 | Device for individual metering |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2838335A1 (en) |
| CZ (1) | CZ2012278A3 (en) |
| WO (1) | WO2013156007A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015149728A1 (en) * | 2014-04-03 | 2015-10-08 | Farmet A.S. | Device for the metering of seed grain |
| RU2728626C1 (en) * | 2017-08-07 | 2020-07-30 | Халлибертон Энерджи Сервисез, Инк. | Device with cross flow assembly for flow control inside well |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2210887A5 (en) * | 1972-12-18 | 1974-07-12 | Carre Camille | |
| FR2638054A1 (en) * | 1988-10-26 | 1990-04-27 | Lely France | Seed spacing drill with depression of the type with a belt |
| EP0598636A2 (en) | 1992-10-22 | 1994-05-25 | Centre National Du Machinisme Agricole, Du Genie Rural, Des Eaux Et Des Forets (Cemagref) | Precision seeddrill |
| DE102006012539A1 (en) * | 2006-03-18 | 2007-09-20 | Amazonen-Werke H. Dreyer Gmbh & Co. Kg | Pneumatic agricultural machine has separating organ arranged between seed agglomeration and seed replacement range medium, where medium is designed as multiple guide rollers arranged one behind other |
| WO2010088703A1 (en) * | 2009-02-02 | 2010-08-05 | Deere & Company | Differential pressure seed meter with an endless belt seed transport member |
| EP2289298A2 (en) | 2009-09-01 | 2011-03-02 | Amazonen-Werke H. Dreyer GmbH & Co. KG | Pneumatic single grain seeder |
-
2012
- 2012-04-20 CZ CZ20120278A patent/CZ2012278A3/en unknown
-
2013
- 2013-04-17 EP EP13720755.1A patent/EP2838335A1/en not_active Withdrawn
- 2013-04-17 WO PCT/CZ2013/000052 patent/WO2013156007A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2210887A5 (en) * | 1972-12-18 | 1974-07-12 | Carre Camille | |
| FR2638054A1 (en) * | 1988-10-26 | 1990-04-27 | Lely France | Seed spacing drill with depression of the type with a belt |
| EP0598636A2 (en) | 1992-10-22 | 1994-05-25 | Centre National Du Machinisme Agricole, Du Genie Rural, Des Eaux Et Des Forets (Cemagref) | Precision seeddrill |
| DE102006012539A1 (en) * | 2006-03-18 | 2007-09-20 | Amazonen-Werke H. Dreyer Gmbh & Co. Kg | Pneumatic agricultural machine has separating organ arranged between seed agglomeration and seed replacement range medium, where medium is designed as multiple guide rollers arranged one behind other |
| WO2010088703A1 (en) * | 2009-02-02 | 2010-08-05 | Deere & Company | Differential pressure seed meter with an endless belt seed transport member |
| EP2289298A2 (en) | 2009-09-01 | 2011-03-02 | Amazonen-Werke H. Dreyer GmbH & Co. KG | Pneumatic single grain seeder |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015149728A1 (en) * | 2014-04-03 | 2015-10-08 | Farmet A.S. | Device for the metering of seed grain |
| RU2728626C1 (en) * | 2017-08-07 | 2020-07-30 | Халлибертон Энерджи Сервисез, Инк. | Device with cross flow assembly for flow control inside well |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2838335A1 (en) | 2015-02-25 |
| CZ2012278A3 (en) | 2013-10-30 |
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