CN214916503U - Construction waste compressor arrangement for construction - Google Patents
Construction waste compressor arrangement for construction Download PDFInfo
- Publication number
- CN214916503U CN214916503U CN202121116908.0U CN202121116908U CN214916503U CN 214916503 U CN214916503 U CN 214916503U CN 202121116908 U CN202121116908 U CN 202121116908U CN 214916503 U CN214916503 U CN 214916503U
- Authority
- CN
- China
- Prior art keywords
- fixedly connected
- organism
- construction
- shell
- construction waste
- 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
Images
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
The utility model relates to a construction waste handles technical field, specifically is a construction waste compressor arrangement for construction, which comprises a bod, the inside of organism is provided with pulverizes the mechanism, the inside of organism is provided with transport mechanism, the top fixed mounting of organism has the electro-magnet, one side at organism top is provided with compressing mechanism, one side of bottom of the body is provided with ejecting mechanism, one side fixedly connected with of bottom of the body supports the mound, one side fixedly connected with connecting block of organism, the middle part sliding connection of connecting block one side has the fixed pin. The utility model has the advantages that: through setting up the electro-magnet, can separate building rubbish and scrap iron, the scrap iron of separation can be retrieved and recycled, and resources are saved starts electric putter through setting up ejecting mechanism, and electric putter drives the push pedal and releases the building rubbish after the compression from the discharge gate, does not need manual to take out the building rubbish after the compression, labour saving and time saving.
Description
Technical Field
The utility model relates to a construction waste handles technical field, especially a construction waste compressor arrangement for construction.
Background
The construction waste refers to the general name of dregs, waste concrete, waste bricks and other wastes generated in the production activities of the construction industry such as demolition, construction, decoration, repair and the like, and is classified according to the production source, and the construction waste can be divided into engineering dregs, decoration waste, demolition waste, engineering mud and the like; the construction waste can be classified into slag, concrete blocks, broken stone blocks, broken bricks and tiles, waste mortar, slurry, asphalt blocks, waste plastics, waste metals, waste bamboo and wood and the like according to the composition.
The building rubbish compressor arrangement for housing construction that discloses in chinese patent CN212493337U, this building rubbish compressor arrangement for housing construction, setting through motor and crushing fluted disc, make the soft building rubbish of input get into can smash the building rubbish that the fluted disc is smashed into comparatively fritter, conveniently compress and handle, cause inconvenience when preventing that soft building rubbish overlength from collecting, setting through the conveyer belt, make whole flow more automatic, reduce the manpower and control, reduce working strength for constructor, however, this building rubbish compressor arrangement for housing construction, in the solution problem, have following shortcoming:
1. the building waste compressing device for building construction cannot separate waste iron in the building waste, and can cause certain resource waste;
2. this building rubbish compressor arrangement for housing construction, the building rubbish that the compression was accomplished is located the pull board, needs manual taking out, and the building rubbish density grow after the compression, the weight will be heavier, comparatively hard when taking out.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's shortcoming, provide a construction waste compressor arrangement for construction.
The purpose of the utility model is realized through the following technical scheme: the utility model provides a construction waste compressor arrangement for construction, includes the organism, the inside of organism is provided with pulverizes the mechanism, the inside of organism is provided with transport mechanism, the top fixed mounting of organism has the electro-magnet, one side at organism top is provided with compressing mechanism, one side of bottom of the body is provided with ejecting mechanism, one side fixedly connected with of bottom of the body supports the mound, one side fixedly connected with connecting block of organism, the middle part sliding connection of connecting block one side has the fixed pin, the bottom sliding connection of organism one side has the sliding door.
Preferably, the machine body comprises a shell, a feeding port, a first material guide plate, a connecting hole, a second material guide plate, a third material guide plate, a first connecting port, a second connecting port and a discharging port, the feeding port is formed in the top of one side of the shell, the first material guide plate is fixedly connected to one side of the feeding port, the connecting hole is formed in one side of the shell, the second material guide plate is arranged on one side of the inside of the shell, the third material guide plate is fixedly connected to the inside of the shell, the first connecting port is formed in one side of the top of the shell, the second connecting port is formed in one side of the bottom of the shell, and the discharging port is formed in one side, away from the second connecting port, of the bottom of the shell.
By adopting the technical scheme, the connection relation between each part and each part included in the machine body is introduced.
Preferably, the grinding mechanism comprises a first servo motor, a first grinding roller, a first gear, a second gear and a second grinding roller, the output end of the first servo motor is fixedly connected with the first grinding roller, one side of the first grinding roller, which is far away from the first servo motor, is fixedly connected with the first gear, the first gear is meshed with the second gear, and one side of the second gear is fixedly connected with the second grinding roller.
By adopting the technical scheme, the grinding mechanism comprises various parts and the connection relation among the parts are introduced.
Preferably, the conveying mechanism comprises a support frame, a second servo motor and a conveying belt, the second servo motor is arranged on one side of the support frame, and the conveying belt is arranged at the output end of the second servo motor.
By adopting the technical scheme, the connection relation between each part and each part included in the conveying mechanism is introduced.
Preferably, the compression mechanism comprises a hydraulic machine, a hydraulic rod and a pressing plate, the output end of the hydraulic machine is fixedly connected with the hydraulic rod, and one end, far away from the hydraulic machine, of the hydraulic rod is fixedly connected with the pressing plate.
By adopting the technical scheme, the compression mechanism comprises various parts and the connection relation among the parts are introduced.
Preferably, the pushing mechanism comprises an electric push rod and a push plate, and the output end of the electric push rod is fixedly connected with the push plate.
By adopting the technical scheme, the connection relation among all parts and components included in the push-out mechanism is introduced.
Preferably, first servo motor fixed mounting is at the top of shell, the both ends of first crushing roller and second crushing roller all are provided with the pivot, first crushing roller and second crushing roller are connected through pivot and connecting hole and shell rotation.
By adopting the technical scheme, a specific connection mode between the shell and the grinding mechanism is introduced.
Preferably, the support frame is fixedly connected to the inside of the housing.
By adopting the technical scheme, a specific connection mode between the transmission mechanism and the shell is introduced.
Preferably, the hydraulic machine is fixedly arranged on one side of the top of the shell through a first connecting port.
By adopting the technical scheme, a specific connection mode between the hydraulic mechanism and the shell is introduced.
Preferably, the electric push rod is fixedly installed on one side of the support pier, the push plate is in sliding connection with the second connector, and the push plate is matched with the second connector.
By adopting the technical scheme, the specific connection mode between the pushing-out mechanism and the shell is introduced.
The utility model has the advantages of it is following:
1. the construction waste compressing device for building construction is provided with the electromagnet, when the device is used, construction waste is put in from a material inlet, the first servo motor is started to drive the first crushing roller, the first crushing roller drives the first gear, the first gear drives the second gear to rotate, the second gear drives the second crushing roller to rotate, the second crushing roller and the second crushing roller rotate oppositely to crush the construction waste, the crushed construction waste falls on the conveying belt along the second guide plate, the second servo motor is started, the conveying belt starts to operate to convey the crushed construction waste to the compressing mechanism, the electromagnet is started simultaneously, when the conveying belt drives the construction waste to move, the electromagnet sucks waste iron in the construction waste from the waste, after the construction waste is discharged from the material outlet, the electromagnet is closed, the waste iron falls on the conveying belt and is finally pushed out from the material outlet, the construction waste and the waste iron are classified, and the separated waste iron can be recycled, so that resources are saved;
2. this building rubbish compressor arrangement for construction, through setting up ejecting mechanism, ejecting mechanism includes electric putter and push pedal, electric putter's output fixedly connected with push pedal, behind the scrap iron suction of electro-magnet in with building rubbish, remaining building rubbish falls into compressing mechanism's below along the third stock guide, start the hydraulic press, the hydraulic stem drives the clamp plate and pushes down, compress building rubbish into the piece, the sliding door is upwards lifted to the handgrip handle, open the discharge gate, promote the fixed pin and make the fixed pin insert the handle middle part, fix the position of sliding door, then start electric putter, electric putter drives the push pedal and releases the building rubbish after the compression from the discharge gate, do not need manual to take out the building rubbish after the compression, time saving and labor saving.
Drawings
FIG. 1 is a schematic sectional view of the present invention;
fig. 2 is a schematic structural view of a first viewing angle of the present invention;
fig. 3 is a schematic structural view of a second viewing angle of the present invention;
FIG. 4 is a schematic cross-sectional view of the body of the present invention;
FIG. 5 is a schematic structural view of the crushing mechanism of the present invention;
fig. 6 is a schematic structural view of the conveying mechanism of the present invention;
fig. 7 is a schematic structural view of the compressing mechanism of the present invention;
fig. 8 is a schematic structural diagram of the push-out mechanism of the present invention.
In the figure: 1-machine body, 101-shell, 102-feeding port, 103-first guide plate, 104-connecting hole, 105-second guide plate, 106-third guide plate, 107-first connecting port, 108-second connecting port, 109-discharging port, 2-grinding mechanism, 201-first servo motor, 202-first grinding roller, 203-first gear, 204-second gear, 205-second grinding roller, 3-conveying mechanism, 301-supporting frame, 302-second servo motor, 303-conveying belt, 4-electromagnet, 5-compressing mechanism, 501-hydraulic press, 502-hydraulic rod, 503-pressing plate, 6-pushing-out mechanism, 601-electric push rod, 602-pushing plate, 7-supporting pier, 8-connecting block, 9-fixing pin and 10-sliding door.
Detailed Description
The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following description.
As shown in fig. 1-3, a construction waste compression device for building construction comprises a machine body 1, a crushing mechanism 2 is arranged inside the machine body 1, a conveying mechanism 3 is arranged inside the machine body 1, an electromagnet 4 is fixedly arranged on the top of the machine body 1, a compression mechanism 5 is arranged on one side of the top of the machine body 1, a push-out mechanism 6 is arranged on one side of the bottom of the machine body 1, a support pier 7 is fixedly connected on one side of the bottom of the machine body 1, a connecting block 8 is fixedly connected on one side of the machine body 1, a fixing pin 9 is slidably connected in the middle of one side of the connecting block 8, a sliding door 10 is slidably connected on the bottom of one side of the machine body 1, the sliding door 10 is located at a discharge port 109, a chute is arranged inside the discharge port 109, the sliding door 10 is slidably connected with a housing 101 through the chute, and a handle is arranged on one side of the sliding door 10.
As a preferred technical solution of the present invention, as shown in fig. 4, the machine body 1 includes a housing 101, a feeding port 102, a first material guiding plate 103, a connecting hole 104, a second material guiding plate 105, a third material guiding plate 106, a first connecting port 107, a second connecting port 108 and a discharging port 109, the feeding port 102 has been opened at the top of one side of the housing 101, the first material guiding plate 103 fixedly connected to one side of the feeding port 102, the connecting hole 104 has been opened at one side of the housing 101, the second material guiding plate 105 at one side of the inside of the housing 101, the third material guiding plate 106 fixedly connected to the inside of the housing 101, the first connecting port 107 has been opened at one side of the top of the housing 101, the second connecting port 108 has been opened at one side of the bottom of the housing 101, and the discharging port 109 has been opened at one side of the bottom of the housing 101, which is far away from the second connecting port 108.
As a preferred technical solution of the present invention, as shown in fig. 5, the crushing mechanism 2 includes a first servo motor 201, a first crushing roller 202, a first gear 203, a second gear 204 and a second crushing roller 205, the first crushing roller 202 is fixedly connected to the output end of the first servo motor 201, the first gear 203 is fixedly connected to one side of the first crushing roller 202 far away from the first servo motor 201, the second gear 204 is engaged with the first gear 203, and the second crushing roller 205 is fixedly connected to one side of the second gear 204.
As a preferred technical scheme of the utility model, as shown in fig. 6, transport mechanism 3 includes support frame 301, second servo motor 302 and conveyer belt 303, and one side of support frame 301 is provided with second servo motor 302, and second servo motor 302's output is provided with conveyer belt 303.
As a preferred technical scheme of the utility model, as shown in fig. 7, the compressing mechanism 5 includes hydraulic press 501, hydraulic stem 502 and clamp plate 503, and hydraulic press 501's output fixedly connected with hydraulic stem 502, hydraulic stem 502 keep away from hydraulic press 501's one end fixedly connected with clamp plate 503.
As a preferred technical solution of the present invention, as shown in fig. 8, the ejecting mechanism 6 includes an electric push rod 601 and a push plate 602, and the output end of the electric push rod 601 is fixedly connected with the push plate 602.
As a preferred technical solution of the present invention, as shown in fig. 1 to 3, the first servo motor 201 is fixedly installed at the top of the housing 101, the rotating shafts are respectively provided at the two ends of the first crushing roller 202 and the second crushing roller 205, and the first crushing roller 202 and the second crushing roller 205 are rotatably connected with the housing 101 through the rotating shafts and the connecting holes 104.
As a preferred technical solution of the present invention, as shown in fig. 1 to 3, the supporting frame 301 is fixedly connected inside the casing 101.
As a preferred technical solution of the present invention, as shown in fig. 1-3, the hydraulic machine 501 is fixedly installed at one side of the top of the housing 101 through the first connection port 107.
As a preferred technical solution of the present invention, as shown in fig. 1-3, the electric push rod 601 is fixedly installed at one side of the supporting pier 7, the push plate 602 is slidably connected to the second connector 108, and the push plate 602 is adapted to the second connector 108.
The working process of the utility model is as follows:
s1, building garbage is put in from the material inlet 102, the first servo motor 201 is started to drive the first grinding roller 202, the first grinding roller 202 drives the first gear 203, the first gear 203 drives the second gear 204 to rotate, and the second gear 204 drives the second grinding roller 205 to rotate, so that the second grinding roller 205 and the second grinding roller 202 rotate oppositely to grind the building garbage;
s2, the crushed construction waste falls on the conveyor belt 303 along the second material guide plate 105, the second servo motor 302 is started, the conveyor belt 303 starts to operate, and the crushed construction waste is conveyed to the compressing mechanism 5;
s3, simultaneously starting the electromagnet 4, sucking the waste iron in the construction waste out of the waste by the electromagnet 4 when the conveyor belt 303 drives the construction waste to move, closing the electromagnet 4 after the construction waste is discharged from the discharge port 109, dropping the waste iron on the conveyor belt 303, and finally pushing the waste iron out of the discharge port 109 to finish the classification of the construction waste and the waste iron;
s4, after the electromagnet 4 sucks out the waste iron in the construction waste, the remaining construction waste falls into the lower part of the compressing mechanism 5 along the third material guide plate 106, the hydraulic press 501 is started, and the hydraulic rod 502 drives the pressing plate 503 to press downwards to compress the construction waste into blocks;
s5, the handle is held by a hand to lift the sliding door 10 upwards, the discharge hole 109 is opened, the fixing pin 9 is pushed to enable the fixing pin 9 to be inserted into the middle of the handle, the position of the sliding door 10 is fixed, then the electric push rod 601 is started, and the electric push rod 601 drives the push plate 601 to push the compressed construction waste out of the discharge hole 109.
To sum up, when a user uses the building waste, the building waste is put in from the material inlet 102 by arranging the electromagnet 4, the first servo motor 201 is started to drive the first crushing roller 202, the first crushing roller 202 drives the first gear 203, the first gear 203 drives the second gear 204 to rotate, the second gear 204 drives the second crushing roller 205 to rotate, so that the second crushing roller 205 and the second crushing roller 202 rotate oppositely to crush the building waste, the crushed building waste falls on the conveyor belt 303 along the second material guide plate 105, the second servo motor 302 is started, the conveyor belt 303 starts to operate to convey the crushed building waste to the compressing mechanism 5, the electromagnet 4 is started simultaneously, when the conveyor belt 303 drives the building waste to move, the electromagnet 4 sucks the waste iron in the building waste from the waste, after the building waste is discharged from the material outlet 109, the electromagnet 4 is closed, the waste iron falls on the electromagnet 303 and finally is pushed out from the material outlet 109, the construction waste and the waste iron are classified, and the separated waste iron can be recycled, so that resources are saved; by arranging the pushing mechanism 6, the pushing mechanism 6 comprises an electric push rod 601 and a push plate 602, the push plate 602 is fixedly connected to the output end of the electric push rod 601, after the electromagnet 4 sucks out the waste iron in the construction waste, the rest construction waste falls into the lower part of the compressing mechanism 5 along the third material guide plate 106, the hydraulic press 501 is started, the hydraulic rod 502 drives the press plate 503 to press down, the construction waste is compressed into blocks, the handle of the hand lifts the sliding door 10 upwards, the discharge hole 109 is opened, the fixing pin 9 is pushed to enable the fixing pin 9 to be inserted into the middle part of the handle, the position of the sliding door 10 is fixed, then the electric push rod 601 is started, the electric push rod 601 drives the push plate 601 to push the compressed construction waste out of the discharge hole 109, the compressed construction waste does not need to be manually extracted, and time and labor are saved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a construction waste compressor arrangement for construction which characterized in that: including organism (1), the inside of organism (1) is provided with pulverizes mechanism (2), the inside of organism (1) is provided with transport mechanism (3), the top fixed mounting of organism (1) has electro-magnet (4), one side at organism (1) top is provided with compressing mechanism (5), one side of organism (1) bottom is provided with ejecting mechanism (6), one side fixedly connected with of organism (1) bottom supports mound (7), one side fixedly connected with connecting block (8) of organism (1), the middle part sliding connection of connecting block (8) one side has fixed pin (9), the bottom sliding connection of organism (1) one side has sliding door (10).
2. The construction waste compressing device for building construction as claimed in claim 1, wherein: the machine body (1) comprises a shell (101), a feeding port (102), a first material guide plate (103), a connecting hole (104), a second material guide plate (105), a third material guide plate (106), a first connecting port (107), a second connecting port (108) and a discharging port (109), a feeding port (102) is formed in the top of one side of the shell (101), a first material guide plate (103) is fixedly connected to one side of the feeding port (102), a connecting hole (104) is formed in one side of the outer shell (101), a second material guide plate (105) is arranged on one side inside the outer shell (101), a third material guide plate (106) is fixedly connected inside the shell (101), a first connecting port (107) is arranged on one side of the top of the shell (101), a second connecting port (108) is formed in one side of the bottom of the shell (101), and a discharging port (109) is formed in one side, far away from the second connecting port (108), of the bottom of the shell (101).
3. The construction waste compressing device for building construction as claimed in claim 1, wherein: grinding mechanism (2) includes first servo motor (201), first crushing roller (202), first gear (203), second gear (204) and second crushing roller (205), first crushing roller (202) of output fixedly connected with of first servo motor (201), first gear (203) of one side fixedly connected with of first servo motor (201) are kept away from in first crushing roller (202), first gear (203) meshing has second gear (204), one side fixedly connected with second crushing roller (205) of second gear (204).
4. The construction waste compressing device for building construction as claimed in claim 1, wherein: transport mechanism (3) are including support frame (301), second servo motor (302) and conveyer belt (303), one side of support frame (301) is provided with second servo motor (302), the output of second servo motor (302) is provided with conveyer belt (303).
5. The construction waste compressing device for building construction as claimed in claim 1, wherein: the compression mechanism (5) comprises a hydraulic machine (501), a hydraulic rod (502) and a pressing plate (503), wherein the hydraulic rod (502) is fixedly connected to the output end of the hydraulic machine (501), and the pressing plate (503) is fixedly connected to one end, far away from the hydraulic machine (501), of the hydraulic rod (502).
6. The construction waste compressing device for building construction as claimed in claim 1, wherein: the push-out mechanism (6) comprises an electric push rod (601) and a push plate (602), and the output end of the electric push rod (601) is fixedly connected with the push plate (602).
7. The construction waste compressing device for building construction as claimed in claim 3, wherein: first servo motor (201) fixed mounting is at the top of shell (101), the both ends of first crushing roller (202) and second crushing roller (205) all are provided with the pivot, first crushing roller (202) and second crushing roller (205) are connected through pivot and connecting hole (104) and shell (101) rotation.
8. The construction waste compressing device for building construction as claimed in claim 4, wherein: the support frame (301) is fixedly connected to the inside of the shell (101).
9. The construction waste compressing device for building construction as claimed in claim 5, wherein: the hydraulic machine (501) is fixedly arranged on one side of the top of the shell (101) through a first connecting port (107).
10. The construction waste compressing device for building construction as claimed in claim 6, wherein: the electric push rod (601) is fixedly arranged on one side of the support pier (7), the push plate (602) is in sliding connection with the second connecting port (108), and the push plate (602) is matched with the second connecting port (108).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121116908.0U CN214916503U (en) | 2021-05-24 | 2021-05-24 | Construction waste compressor arrangement for construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121116908.0U CN214916503U (en) | 2021-05-24 | 2021-05-24 | Construction waste compressor arrangement for construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214916503U true CN214916503U (en) | 2021-11-30 |
Family
ID=79059198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121116908.0U Expired - Fee Related CN214916503U (en) | 2021-05-24 | 2021-05-24 | Construction waste compressor arrangement for construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214916503U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114505139A (en) * | 2022-02-14 | 2022-05-17 | 刘顺朋 | Intelligent building garbage cleaning device for building and using method |
-
2021
- 2021-05-24 CN CN202121116908.0U patent/CN214916503U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114505139A (en) * | 2022-02-14 | 2022-05-17 | 刘顺朋 | Intelligent building garbage cleaning device for building and using method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN214916503U (en) | Construction waste compressor arrangement for construction | |
| CN111940033A (en) | Building waste retrieves reducing mechanism | |
| CN112171834A (en) | Waste building template recycling device and using method | |
| CN112138772A (en) | Construction waste recovery device for construction | |
| CN211755348U (en) | A garbage collection device for green building construction | |
| CN217665380U (en) | Steel rolling waste recovery device | |
| CN111996964A (en) | Construction site residual brick picking and refining device and using method | |
| CN217289767U (en) | Novel efficient waste recovery for concrete processing device | |
| CN214517401U (en) | Sand mill for sand casting | |
| CN216261245U (en) | Broken recovery unit of rubbish is built in room | |
| CN215743992U (en) | Environment-friendly civil construction waste material reducing mechanism | |
| CN112934358B (en) | Building curtain wall recycling and crushing device and crushing method thereof | |
| CN213593151U (en) | Waste building template recycling device | |
| CN212915794U (en) | Broken sorter of building rubbish | |
| CN113509970A (en) | A building rubbish recycle device for in construction | |
| CN211865183U (en) | Building engineering construction waste material automatic processing apparatus | |
| CN113198570A (en) | Efficient solid-liquid separation treatment method and device for solid garbage | |
| CN217910570U (en) | Civil engineering construction waste treatment device | |
| CN217315077U (en) | A waste wood processing apparatus for wood furniture processing | |
| CN212579275U (en) | Waste metal baling press | |
| CN217315094U (en) | Leftover material recovery device for pipeline production | |
| CN218254609U (en) | Grinding waste chip recoverer | |
| CN217726604U (en) | Printing paper clout recycling apparatus | |
| CN109046711A (en) | A kind of domestic garbage disposer of good crushing effect | |
| CN220027164U (en) | Cement kiln co-treatment household garbage device |
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: 20211130 |