CN216566158U - Agricultural farmyard manure fertilizer scattering device - Google Patents
Agricultural farmyard manure fertilizer scattering device Download PDFInfo
- Publication number
- CN216566158U CN216566158U CN202220067835.9U CN202220067835U CN216566158U CN 216566158 U CN216566158 U CN 216566158U CN 202220067835 U CN202220067835 U CN 202220067835U CN 216566158 U CN216566158 U CN 216566158U
- Authority
- CN
- China
- Prior art keywords
- rotary drum
- driving lever
- fixedly connected
- agricultural
- fertilizer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 210000003608 fece Anatomy 0.000 title claims abstract description 42
- 239000010871 livestock manure Substances 0.000 title claims abstract description 42
- 239000003337 fertilizer Substances 0.000 title claims abstract description 34
- 230000007480 spreading Effects 0.000 claims abstract description 31
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 238000004140 cleaning Methods 0.000 claims abstract description 11
- 238000009331 sowing Methods 0.000 claims description 16
- 230000000694 effects Effects 0.000 abstract description 4
- 230000009471 action Effects 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 abstract description 3
- 230000010405 clearance mechanism Effects 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Sowing (AREA)
- Soil Working Implements (AREA)
Abstract
The utility model discloses an agricultural farmyard manure spreading device which comprises a spreading shell, wherein the inner side of the spreading shell is provided with a slope, the inner side of a rotary drum is provided with an adjusting mechanism, the inner side of the spreading shell is provided with a cleaning mechanism, the cleaning mechanism is arranged at the top end of the slope, and the manure on the inner side of the spreading shell can be pulled out from the lower part of the spreading shell under the action of the rotary drum and a driving lever and passes through the driving lever, a roller, a connecting plate and a spring; carry the driving lever through the rotary drum and dial out fertilizer from the inboard of scattering the casing, the realization is to scattering of fertilizer, mutual rotation between driving lever and the spacing post simultaneously, when the driving lever rotates the downside of spacing post, can make the inboard of driving lever withdrawal rotary drum under the effect of spring, thereby make the cubic fertilizer and the driving lever separation of inserting in the driving lever outside and being in between the driving lever, and fall ground, thereby prevent that cubic fertilizer card from dying between the driving lever, make the outside of cubic fertilizer can not be attached to at the rotary drum, guarantee the normal use of rotary drum.
Description
Technical Field
The utility model relates to the technical field of farmyard manure spreading, in particular to an agricultural farmyard manure spreading device.
Background
The organic farmyard manure has the characteristics of comprehensive nutrient substances, namely nitrogen, phosphorus and potassium, calcium, magnesium, sulfur, iron and trace elements, is favorable for promoting the formation of soil granular structures, enables the ratio of air and water in the soil to be coordinated, loosens the soil, and increases the water-retaining, heat-preserving, air-permeable and fertilizer-retaining capacities.
At present the farmyard manure all is in moist state, lead to the farmyard manure to have certain adhesion, it is attached to the slope of scattering the device to appear the farmyard manure when scattering through scattering the device easily, because it is darker to scatter the device, the inconvenient inboard clearance that gets into the device of scattering of staff, the time is of a specified duration, it blocks up to scatter the device easily, scatter the device simultaneously when carrying out the unloading through the driving lever, if the driving lever injects the inboard of cubic farmyard manure, the problem that cubic farmyard manure card dies between the driving lever appears easily, and then the problem that cubic farmyard manure is attached to the driving lever surface appears, for this reason, we propose a device is scattered to agricultural farmyard manure material.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide an agricultural farmyard manure fertilizer spreading device which can effectively solve the problems in the background art.
In order to realize the purpose, the utility model adopts the technical scheme that:
the utility model provides a device is scattered to agricultural peasant family fertilizer, is including scattering the casing, the inboard of scattering the casing is provided with the slope, the right-hand member fixedly connected with motor of scattering the casing, the terminal fixedly connected with rotary drum of main shaft of motor, be provided with the driving lever around the rotary drum, the inboard of rotary drum is provided with adjustment mechanism, the inboard of scattering the casing is provided with clearance mechanism, and clearance mechanism sets up on the top of slope, can dial out the inboard fertilizer of scattering the casing from the below of scattering the casing under the effect of rotary drum and driving lever.
Further, adjustment mechanism includes and scatters casing fixed connection's spacing post, the outside all around of spacing post is rotated and is connected with the gyro wheel, and the gyro wheel rotates with the driving lever to be connected, and the driving lever rotates with the rotary drum to be connected, can reduce the frictional force between spacing post and the driving lever through the gyro wheel, mutual rotation between driving lever and the spacing post simultaneously, when the driving lever rotates the downside of spacing post, can make the inboard of driving lever withdrawal rotary drum under the effect of spring, thereby make the cubic fertilizer and the driving lever separation of inserting in the driving lever outside and being between the driving lever, and fall to ground, thereby prevent that cubic fertilizer card from dying between the driving lever, make the outside of cubic fertilizer can not attached to the rotary drum, guarantee the normal use of rotary drum.
Furthermore, the both sides of driving lever all fixedly connected with connecting plate, the one end fixedly connected with spring of connecting plate, and spring and rotary drum fixed connection are convenient for realize the regulation to the driving lever position.
Furthermore, when the driving lever rotates to the upper side of the limiting column, the driving lever extends out of the inner side of the rotary drum, and when the driving lever rotates to the lower side of the limiting column, the driving lever retracts into the inner side of the rotary drum, so that the driving lever can be used for cleaning massive fertilizer of the driving lever when being used normally.
Further, clearance mechanism includes the scraper blade with slope sliding connection, the one end fixedly connected with pull rod of scraper blade, the other end fixedly connected with pull ring of pull rod takes the scraper blade to scrape along the slope through pull ring and pull rod, scrapes slope surface adnexed fertilizer through the scraper blade, does not need the staff to get into to broadcast the inboard of scattering the casing and clear up to the staff's of being convenient for use also improves work efficiency simultaneously.
Furthermore, one end of the sowing shell is fixedly connected with a fixing block, the inner side of the fixing block is clamped with a limiting pin, the limiting pin is clamped with the pull rod, limiting fixing of the pull rod can be achieved through the limiting pin, and the pull rod is guaranteed not to move when not in use.
Furthermore, the pull rod is connected with the slope surface in a sliding mode, and the top end face of the pull rod and the slope surface are in the same plane, so that the pull rod is guaranteed not to block the fertilizer from sliding downwards along the slope surface.
The utility model has the following beneficial effects:
compared with the prior art, the device is provided with a motor, a rotary drum, a limiting column, a deflector rod, a roller, a connecting plate and a spring; take the driving lever to dial fertilizer from the inboard of scattering the casing through the rotary drum, the realization is to scattering of fertilizer, rotation between driving lever and the spacing post simultaneously, when the driving lever rotated the downside of spacing post, can make the inboard of driving lever withdrawal rotary drum under the effect of spring, thereby make the cubic fertilizer and the driving lever separation of inserting in the driving lever outside and being in between the driving lever, and ground falls, thereby prevent that cubic fertilizer card from dying between the driving lever, make the outside of cubic fertilizer can not attached to the rotary drum, guarantee the normal use of rotary drum.
Compared with the prior art, the device is provided with a pull ring, a pull rod, a fixed block, a limiting pin and a scraper; when needs are cleared up slope surface adnexed fertilizer, take the scraper blade to scrape along the slope through pull ring and pull rod, scrape slope surface adnexed fertilizer through the scraper blade, do not need the staff to get into the inboard of scattering the casing and clear up to be convenient for staff's use also improves work efficiency simultaneously.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the technical description of the present invention will be briefly introduced below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.
FIG. 1 is a schematic view of the overall structure of an agricultural farmyard manure spreader according to the present invention;
FIG. 2 is a schematic side view of the internal structure of a sowing housing of the agricultural farmyard manure sowing device according to the present invention;
FIG. 3 is a schematic view of a side view mounting structure of a deflector rod of the agricultural farmyard manure spreading device of the present invention;
FIG. 4 is a schematic view of a top-down mounting structure of a spacing post of the agricultural farmyard manure spreading device of the present invention;
FIG. 5 is a schematic view of the structure at the position A in FIG. 1 of the agricultural farmyard manure and fertilizer spreading device of the present invention;
fig. 6 is a schematic structural view of a place B in fig. 4 of the agricultural farmyard manure fertilizer spreading device of the present invention.
In the figure: 1. scattering the shell; 101. a slope surface; 2. a pull ring; 3. a pull rod; 4. a fixed block; 5. a spacing pin; 6. a squeegee; 7. a motor; 8. a rotating drum; 9. a limiting column; 10. a deflector rod; 11. a roller; 12. a connecting plate; 13. a spring.
Detailed Description
The present invention will be further described with reference to the following detailed description, wherein the drawings are for illustrative purposes only and are not intended to be limiting, wherein certain elements may be omitted, enlarged or reduced in size, and are not intended to represent the actual dimensions of the product, so as to better illustrate the detailed description of the utility model.
Example 1
As shown in fig. 1-6, an agricultural farmyard manure fertilizer spreading device comprises a spreading shell 1, a slope 101 is arranged on the inner side of the spreading shell 1, a motor 7 is fixedly connected to the right end of the spreading shell 1, a rotary drum 8 is fixedly connected to the end of a main shaft of the motor 7, a shifting rod 10 is arranged around the rotary drum 8, an adjusting mechanism is arranged on the inner side of the rotary drum 8, a cleaning mechanism is arranged on the inner side of the spreading shell 1 and is arranged at the top end of the slope 101, the adjusting mechanism comprises a limiting column 9 fixedly connected with the spreading shell 1, the outer side of the periphery of the limiting column 9 is rotatably connected with a roller 11, the roller 11 is rotatably connected with the shifting rod 10, the shifting rod 10 is rotatably connected with the rotary drum 8, connecting plates 12 are fixedly connected to both sides of the shifting rod 10, and a spring 13 is fixedly connected to one end of the connecting plates 12, and the spring 13 is fixedly connected with the rotary drum 8, when the deflector rod 10 rotates to the upper part of the limiting column 9, the deflector rod 10 extends out of the inner side of the rotary drum 8, and when the deflector rod 10 rotates to the lower part of the limiting column 9, the deflector rod 10 retracts into the inner side of the rotary drum 8.
By adopting the technical scheme: firstly, the device is fixed with an external tractor, meanwhile, the external tractor supplies power, farmyard manure is placed on the inner side of a sowing shell, the external tractor drives the device to move, a motor 7 drives a rotary drum 8 to rotate on the inner side of the sowing shell 1, meanwhile, the rotary drum 8 pulls the farmyard manure downwards from the inner side of the sowing shell 1 through a deflector rod 10, thereby realizing the sowing of the manure, the deflector rod 10 also rotates along a limiting column 9 through a roller 11, when the deflector rod 10 and the roller 11 rotate to the lower side of the limiting column 9, the deflector rod 10 retracts to the inner side of the rotary drum 8 under the action of a spring 13, thereby separating the massive manure which is inserted outside the deflector rod 10 and between the deflector rod 10 from the deflector rod 10 and falling to the ground, preventing the massive manure from being stuck between the deflector rods 10, preventing the massive manure from being attached to the outer side of the rotary drum 8, and ensuring the normal use of the rotary drum 8, when the deflector rod 10 and the roller 11 rotate to the upper part of the limiting column 9, the deflector rod 10 extends out of the inner side of the rotary drum 8, so that the deflector rod 10 continues to work normally.
Example 2
As shown in fig. 1-6, an agricultural farmyard manure fertilizer spreading device comprises a spreading shell 1, a slope 101 is arranged on the inner side of the spreading shell 1, a motor 7 is fixedly connected to the right end of the spreading shell 1, a rotary drum 8 is fixedly connected to the end of a main shaft of the motor 7, shift levers 10 are arranged around the rotary drum 8, an adjusting mechanism is arranged on the inner side of the rotary drum 8, a cleaning mechanism is arranged on the inner side of the spreading shell 1 and is arranged at the top end of the slope 101, the cleaning mechanism comprises a scraper 6 slidably connected with the slope 101, a pull rod 3 is fixedly connected to one end of the scraper 6, a pull ring 2 is fixedly connected to the other end of the pull rod 3, a fixed block 4 is fixedly connected to one end of the spreading shell 1, a limit pin 5 is clamped on the inner side of the fixed block 4, and the limit pin 5 is clamped with the pull rod 3, the pull rod 3 is connected with the slope surface 101 in a sliding mode, and the top end face of the pull rod 3 and the slope surface 101 are in the same plane.
By adopting the technical scheme: after scattering 1 inboard fertilizer of casing and using up, when needing to clear up slope 101 adnexed fertilizer, the staff at first takes out 5 spacer pins from the inboard of pull rod 3 and fixed block 4, then through pull ring 2 and 3 pulling scraper blades 6 of pull rod, scrape the fertilizer that adheres to on slope 101 surface through scraper blade 6, do not need the staff to get into the inboard of scattering casing 1 and clear up, thereby be convenient for staff's use, also improve work efficiency simultaneously, scraper blade 6 resets again after the clearance is accomplished, insert the inboard of fixed block 4 and pull rod 3 to spacer pin 5 simultaneously, realize spacing fixed to pull rod 3.
The working process is as follows: firstly, the device is fixed with an external tractor, meanwhile, the external tractor supplies power, farmyard manure is placed on the inner side of a sowing shell, the external tractor drives the device to move, a motor 7 drives a rotary drum 8 to rotate on the inner side of the sowing shell 1, meanwhile, the rotary drum 8 pulls the farmyard manure downwards from the inner side of the sowing shell 1 through a deflector rod 10, thereby realizing the sowing of the manure, the deflector rod 10 also rotates along a limiting column 9 through a roller 11, when the deflector rod 10 and the roller 11 rotate to the lower side of the limiting column 9, the deflector rod 10 retracts to the inner side of the rotary drum 8 under the action of a spring 13, thereby separating the massive manure which is inserted outside the deflector rod 10 and between the deflector rod 10 from the deflector rod 10 and falling to the ground, preventing the massive manure from being stuck between the deflector rods 10, preventing the massive manure from being attached to the outer side of the rotary drum 8, and ensuring the normal use of the rotary drum 8, and when the deflector rod 10 and the roller 11 rotate to the upper side of the limiting column 9, the deflector rod 10 extends out of the inner side of the rotary drum 8, so that the deflector rod 10 continues to work normally, after the fertilizer on the inner side of the scattering shell 1 is used up, when the fertilizer attached to the slope surface 101 needs to be cleaned, a worker firstly takes out the limiting pin 5 from the inner sides of the pull rod 3 and the fixing block 4, then pulls the scraper 6 through the pull ring 2 and the pull rod 3, scrapes the fertilizer attached to the surface of the slope surface 101 through the scraper 6, and does not need to enter the inner side of the scattering shell 1 for cleaning, so that the use of the worker is facilitated, the working efficiency is also improved, the scraper 6 resets again after cleaning is completed, meanwhile, the limiting pin 5 is inserted into the inner sides of the fixing block 4 and the pull rod 3, and the limiting fixation of the pull rod 3 is realized.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides an agricultural farmyard manure fertilizer scattering device, includes scatters casing (1), its characterized in that: the inner side of the sowing shell (1) is provided with a slope surface (101), the right end of the sowing shell (1) is fixedly connected with a motor (7), the tail end of a main shaft of the motor (7) is fixedly connected with a rotary drum (8), deflector rods (10) are arranged around the rotary drum (8), the inner side of the rotary drum (8) is provided with an adjusting mechanism, the inner side of the sowing shell (1) is provided with a cleaning mechanism, and the cleaning mechanism is arranged on the top end of the slope surface (101).
2. The agricultural farmer's manure spreading device according to claim 1, characterized in that: the adjusting mechanism comprises a limiting column (9) fixedly connected with the sowing shell (1), the outer side of the periphery of the limiting column (9) is rotatably connected with a roller (11), the roller (11) is rotatably connected with a shifting rod (10), and the shifting rod (10) is rotatably connected with a rotary drum (8).
3. The agricultural farmer's manure spreading device according to claim 1, characterized in that: both sides of the shifting lever (10) are fixedly connected with connecting plates (12), one end of each connecting plate (12) is fixedly connected with a spring (13), and the springs (13) are fixedly connected with the rotary drum (8).
4. An agricultural farmer's manure spreading device according to claim 1 or 2, characterized in that: when the deflector rod (10) rotates to the upper part of the limiting column (9), the deflector rod (10) extends out of the inner side of the rotary drum (8), and when the deflector rod (10) rotates to the lower part of the limiting column (9), the deflector rod (10) retracts into the inner side of the rotary drum (8).
5. The agricultural farmer's manure spreading device according to claim 1, characterized in that: the cleaning mechanism comprises a scraper (6) which is connected with the slope surface (101) in a sliding manner, one end of the scraper (6) is fixedly connected with a pull rod (3), and the other end of the pull rod (3) is fixedly connected with a pull ring (2).
6. The agricultural farmer's manure spreading device according to claim 1, characterized in that: one end of the sowing shell (1) is fixedly connected with a fixing block (4), the inner side of the fixing block (4) is clamped with a limiting pin (5), and the limiting pin (5) is clamped with the pull rod (3).
7. The agricultural farmer's manure spreading device according to claim 5, characterized in that: the pull rod (3) is connected with the slope surface (101) in a sliding mode, and the top end surface of the pull rod (3) and the slope surface (101) are in the same plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220067835.9U CN216566158U (en) | 2022-01-12 | 2022-01-12 | Agricultural farmyard manure fertilizer scattering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220067835.9U CN216566158U (en) | 2022-01-12 | 2022-01-12 | Agricultural farmyard manure fertilizer scattering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216566158U true CN216566158U (en) | 2022-05-20 |
Family
ID=81592922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220067835.9U Expired - Fee Related CN216566158U (en) | 2022-01-12 | 2022-01-12 | Agricultural farmyard manure fertilizer scattering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216566158U (en) |
-
2022
- 2022-01-12 CN CN202220067835.9U patent/CN216566158U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104206087A (en) | Fertilizer distributor | |
| CN112425333B (en) | Energy-concerving and environment-protective type farmland fertilizer injection unit | |
| CN210699714U (en) | Fertilizer and water system of farm | |
| CN204069732U (en) | A kind of fertilizer distributor | |
| CN216566158U (en) | Agricultural farmyard manure fertilizer scattering device | |
| CN210694913U (en) | Fertilizer injection unit for agricultural engineering | |
| CN211734213U (en) | Organic fertilizer production equipment | |
| CN205596531U (en) | Rotary tillage fertilizing and seeding machine | |
| CN111567167A (en) | Wheat seeding and fertilizing integrated device | |
| CN206993622U (en) | Sugarcane side sows planting machine | |
| CN116369016A (en) | Moisture-proof and sticky small-sized fertilizer injection unit | |
| CN210491655U (en) | Fertilizer distributor is with fertile pole under spiral | |
| CN213306204U (en) | Saline and alkaline land flax is planted with articulating formula fertilizer injection unit | |
| CN114503815A (en) | Secondary-pressing full-width precision seeder and seeding method | |
| CN213187162U (en) | Wheat breeding is with permutation disseminator | |
| CN209314226U (en) | Multifunctional rotary tillage fertilising level land all-in-one machine | |
| CN201022269Y (en) | Fertilizer spreader | |
| CN208047201U (en) | A kind of wheat is sowed seeds flattening device | |
| CN207040181U (en) | A kind of efficient sowing machine | |
| CN201898714U (en) | Seeder | |
| CN206481576U (en) | Multi-functional no-tillage fertilizing seeder | |
| CN216700908U (en) | Agricultural soil fertilizer application is with device that loosens soil | |
| CN212573516U (en) | Soil fertilizer scattering device is planted in laborsaving of grape | |
| CN213603114U (en) | Agricultural machine fertilizer injection unit | |
| CN218072389U (en) | Jerusalem artichoke seed manure is with broadcasting machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220520 |