CN209681059U - A kind of efficient sand mixer - Google Patents
A kind of efficient sand mixer Download PDFInfo
- Publication number
- CN209681059U CN209681059U CN201920140629.4U CN201920140629U CN209681059U CN 209681059 U CN209681059 U CN 209681059U CN 201920140629 U CN201920140629 U CN 201920140629U CN 209681059 U CN209681059 U CN 209681059U
- Authority
- CN
- China
- Prior art keywords
- shift plate
- scraper
- rabbling mechanism
- support
- sand
- 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.)
- Active
Links
Landscapes
- Mixers Of The Rotary Stirring Type (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
The utility model proposes a kind of efficient sand mixers, including sand mixing thick tube, chassis sand mixing gear, eccentric rabbling mechanism, shift plate drives upper disk, shift plate supports lower wall, scraper shift plate component and upper dish driving mechanism, the bottom of the sand mixing thick tube is equipped with chassis sand mixing gear, auxiliary rabbling mechanism is provided on the chassis sand mixing gear, the bias rabbling mechanism includes the first rabbling mechanism and the second rabbling mechanism, the upper dish driving mechanism controls shift plate by gear driven mechanism and drives upper disk rotation, multiple the circumferentially-spaced of scraper shift plate component are distributed in sand mixing thick tube, the upper end of the scraper shift plate component, lower end is separately mounted to shift plate and drives on upper disk and shift plate support lower wall, the scraper shift plate component is equipped with the scraper plate for the cooperation that leans with sand mixing thick tube inner wall, it can shorten and be blended the time, improve mulling efficiency, and it can be timely The molding sand adhered in sand mixer inner walls is removed, guarantees that mulling is uniform.
Description
[technical field]
The utility model relates to the technical field of sand mixer, especially a kind of efficient sand mixer.
[background technique]
Equipment of the sand mixer as molding sand is blended, the use in foundary industry is very extensive, and traditional sand mixer is mixed
During sand, molding sand is often adhered on the inner wall of sand mixer shell, is blended unevenly, not can guarantee so as to cause molding sand
Molding sand is blended the standard for reaching required, influences the quality of molding sand, is unable to satisfy the needs of Foundry Production, while binder can also
Molding sand is bonded on the inner wall of sand mixer shell, then when unloading sand, possibly the molding sand being blended can not be drawn off completely, for a long time
Adhere on sand mixer shell, molding sand hardening after, removing from sand mixer shell just becomes unusual trouble, if without and
Shi Qingli can generate hard particles in molding sand, requirement is unable to satisfy, to also result in when carrying out mulling next time
The waste of molding sand resource, while some operators prevent molding sand from adhering on sand mixer shell by beating sand mixer shell,
It is easy to damage sand mixer in this way, influences the service life of sand mixer, existing sand mixer, during molding sand is blended, object
The mixability of material is extremely difficult to ideal effect, and sand mixer is blended that the time is long, unstable, and molding sand is blended low efficiency.Now propose
A kind of efficient sand mixer.
[utility model content]
The purpose of this utility model is exactly to solve the problems of the prior art, proposes a kind of efficient sand mixer, can shorten
It is blended the time, improves mulling efficiency, and the molding sand adhered in sand mixer inner walls can be removed in time, guarantees that mulling is equal
It is even.
To achieve the above object, the utility model proposes a kind of efficient sand mixers, including sand mixing thick tube, chassis sand mixer
Structure, eccentric rabbling mechanism, shift plate drive upper disk, shift plate support lower wall, scraper shift plate component and upper dish driving mechanism, the mulling
The bottom of cylinder is equipped with chassis sand mixing gear, several auxiliary rabbling mechanisms are provided on the chassis sand mixing gear, described auxiliary
Helping rabbling mechanism includes that the first of the center convolution agitating shaft being installed on swivel base, two outer agitating shafts and driving swivel base rotation drives
Dynamic motor, the center convolution agitating shaft are installed at the center of swivel base, and the outer agitating shaft is symmetrically distributed in center convolution and stirs
The two sides of axis are mixed, several stirring rod are installed on the outer agitating shaft, the bias rabbling mechanism is installed on the top of sand mixing thick tube
It covers, the bias rabbling mechanism includes the first rabbling mechanism and the second rabbling mechanism, and first rabbling mechanism and second stirs
It mixes mechanism to be symmetrical set centered on center convolution agitating shaft, the inner cavity of the sand mixing thick tube is disposed with first from top to bottom
Supporting guide and the second supporting guide, the shift plate drive upper disk activity to be installed on the first supporting guide, the upper dish driving
Mechanism is set to the outside of sand mixing thick tube, and the upper dish driving mechanism controls shift plate by gear driven mechanism and upper disk is driven to rotate,
The shift plate support lower wall is movably installed on the second supporting guide, and multiple the circumferentially-spaced of scraper shift plate component are distributed in
In sand mixing thick tube, upper end, the lower end of the scraper shift plate component are separately mounted to shift plate and drive on upper disk and shift plate support lower wall, institute
State the scraper plate that scraper shift plate component is equipped with the cooperation that leans with sand mixing thick tube inner wall.
Preferably, first rabbling mechanism is identical as the structure of the second rabbling mechanism, first rabbling mechanism
Long paddle group and short paddle group are arranged at intervals in shaft, the long paddle group is circumferentially set in shaft by 3-5
Long paddle composition, the short paddle group is made of the 3-5 short paddle that is set in shaft of circumferential direction, the outer stirring
The distance between axis and heart screw agitation shaft are greater than the distance between the first rabbling mechanism and heart screw agitation shaft.
Preferably, it further includes the first support base, driven tooth, upper mounting seat that the shift plate, which drives upper disk, the shift plate is driven
The outer ring of dynamic upper disk is equipped with the first support base, and the lower end of first support base is equipped with the installed with the first supporting guide activity
One slide, the periphery of first support base are equipped with the driven tooth being meshed with gear driven mechanism, and the shift plate drives upper disk
Inner ring be symmetrically arranged with two upper mounting seats, U-lag is equipped in the upper mounting seat, the upper end of the scraper shift plate component clamps
In U-lag, the shift plate, which drives, to be connected between upper disk, shift plate support lower wall by least two connecting rods.
Preferably, the shift plate support lower wall includes the second support base and lower mounting seat well, the shift plate supports lower wall
Outer ring the second support base is installed, the lower end of second support base is equipped with the second cunning install with the second supporting guide activity
The inner wall of seat, the shift plate support lower wall is symmetrically arranged with lower mounting seat corresponding with upper mounting seat, sets in the lower mounting seat
There is limit slot, the cross sectional shape of the limit slot is circle, and the top of the limit slot, which is equipped with, imports cone chamber, described to scrape
The lower end of material shift plate component is installed in limit slot.
Preferably, the scraper shift plate component further includes support rod, fixing seat, elastic telescopic bracket, scraper plate support plate,
The top of the support rod, which is equipped with, runs through U-lag, and the top of the support rod is equipped with fixing seat, and the fixing seat passes through fastener
It is fixed on the top of upper mounting seat, the upper mounting seat is equipped with the mounting hole matched with fastener, under the support rod
Portion is installed in limit slot, is connected between the support rod and scraper plate support plate by several elastic telescopic brackets, described
Scraper plate is mounted in scraper plate support plate.
Preferably, the upper dish driving mechanism further includes the second motor for driving gear driven mechanism.
Preferably, the inner cavity of the sand mixing thick tube is disposed with the first mounting groove and the second mounting groove, institute from top to bottom
It states the first supporting guide and the second supporting guide is respectively arranged in the first mounting groove and the second mounting groove.
It is equipped between upper disk, the outer wall of shift plate support lower wall and the inner wall of sand mixing thick tube preferably, the shift plate drives
Several sealing elements.
The utility model has the beneficial effects that the utility model passes through sand mixing thick tube, mulling motor, rabbling mechanism, shift plate driving
The cooperation of upper disk, shift plate support lower wall, scraper shift plate component and upper dish driving mechanism etc., eccentric rabbling mechanism stir material
It mixes and is blended, two outer agitating shafts can mix the material of sand mixing thick tube inner circumferential, can shorten and be blended the time, improve mulling effect
Rate, and drive upper disk, shift plate to support lower wall that scraper shift plate component can be driven to rotate by shift plate, elastic telescopic bracket can be protected
Card scraper shift plate component is resisted against the inner wall of sand mixing thick tube always, can remove the type adhered in sand mixer inner walls in time
Sand, so that molding sand is avoided to waste, energy-saving sand resource, and can also ensure that mulling is uniform, wherein scraper shift plate component uses
Detachable structure, it is easy to disassemble to be cleared up.
The feature and advantage of the utility model will be described in detail by embodiment combination attached drawing.
[Detailed description of the invention]
Fig. 1 is a kind of schematic diagram of internal structure of efficient sand mixer of the utility model；
Fig. 2 is the partial sectional schematic view that a kind of shift plate of efficient sand mixer of the utility model drives upper disk；
Fig. 3 is a kind of partial sectional schematic view of the shift plate support lower wall of efficient sand mixer of the utility model；
Fig. 4 is a kind of schematic top plan view of the upper mounting seat of efficient sand mixer of the utility model；
Fig. 5 is a kind of schematic top plan view of the lower mounting seat of efficient sand mixer of the utility model；
Fig. 6 is a kind of structural schematic diagram of the upper dish driving mechanism of efficient sand mixer of the utility model；
Fig. 7 is a kind of overlooking structure diagram of the swivel base of efficient sand mixer of the utility model.
[specific embodiment]
Refering to fig. 1 to a kind of efficient sand mixer of Fig. 7 the utility model, including sand mixing thick tube 1, chassis sand mixing gear 2, bias
Rabbling mechanism 3, shift plate drive upper disk 4, shift plate support lower wall 5, scraper shift plate component 6 and upper dish driving mechanism 7, the sand mixing thick tube
1 bottom is equipped with chassis sand mixing gear 2, several auxiliary rabbling mechanisms are provided on the chassis sand mixing gear 2, described auxiliary
Helping rabbling mechanism includes that 23, the two outer agitating shafts 24 of center convolution agitating shaft being installed on swivel base 22 and driving swivel base 22 rotate
The first driving motor 21, the center convolution agitating shaft 23 is installed at the center of swivel base 22, and the outer agitating shaft 24 is symmetrical
The two sides of center convolution agitating shaft 23 are distributed in, several stirring rod, the eccentric stirring are installed on the outer agitating shaft 24
Mechanism 3 is installed on the top cover of sand mixing thick tube 1, and the bias rabbling mechanism 3 includes the first rabbling mechanism 31 and the second rabbling mechanism
32, first rabbling mechanism 31 and the second rabbling mechanism 32 are symmetrical set centered on center convolution agitating shaft 23, described
The inner cavity of sand mixing thick tube 1 is disposed with the first supporting guide 11 and the second supporting guide 12 from top to bottom, in the shift plate driving
Disk 4 is movably installed on the first supporting guide 11, and the upper dish driving mechanism 7 is set to the outside of sand mixing thick tube 1, and the upper disk drives
Motivation structure 7 controls shift plate by gear driven mechanism 72 and upper disk 4 is driven to rotate, and the shift plate support lower wall 5 is movably installed in the
On two supporting guides 12, multiple the circumferentially-spaced of scraper shift plate component 6 are distributed in sand mixing thick tube 1, the scraper shift plate group
Upper end, the lower end of part 6 are separately mounted to shift plate and drive on upper disk 4 and shift plate support lower wall 5, set on the scraper shift plate component 6
There is the scraper plate 65 for the cooperation that leans with 1 inner wall of sand mixing thick tube.The structure phase of first rabbling mechanism 31 and the second rabbling mechanism 32
Together, it is arranged at intervals with long paddle group 311 and short paddle group 312 in the shaft of first rabbling mechanism 31, the length is stirred
It mixes leaf group 311 to be made of the 3-5 circumferential long paddle being set in shaft, the short paddle group 312 is circumferentially set by 3-5
The short paddle composition being placed in shaft, the distance between the outer agitating shaft 24 and heart screw agitation shaft 23 are greater than the first stirring
The distance between mechanism 31 and heart screw agitation shaft 23.It further includes the first support base 41, driven tooth that the shift plate, which drives upper disk 4,
42, upper mounting seat 43, the shift plate drive the outer ring of upper disk 4 to be equipped with the first support base 41, the lower end of first support base 41
Equipped with the first slide 411 with the 11 activity installation of the first supporting guide, the periphery of first support base 41 is equipped with drives with gear
The driven tooth 42 that motivation structure 72 is meshed, the shift plate drive the inner ring of upper disk 4 to be symmetrically arranged with two upper mounting seats 43, it is described on
U-lag 431 is equipped in mounting base 43, the upper end of the scraper shift plate component 6 is installed in U-lag 431, in the shift plate driving
It is connected between disk 4, shift plate support lower wall 5 by least two connecting rods 400.The shift plate support lower wall 5 includes second well
Seat 51 and lower mounting seat 52 are supportted, the outer ring of the shift plate support lower wall 5 is equipped with the second support base 51, second support base 51
Lower end be equipped with the second slide 511 with the activity installation of the second supporting guide 12, the inner wall of the shift plate support lower wall 5 is symmetrically set
There is lower mounting seat 52 corresponding with upper mounting seat 43, limit slot 521, the limit slot are equipped in the lower mounting seat 52
521 cross sectional shape is circle, and the top of the limit slot 521, which is equipped with, imports cone chamber 522, the scraper shift plate component 6
Lower end is installed in limit slot 521.The scraper shift plate component 6 further includes support rod 61, fixing seat 62, elastic telescopic bracket
63, scraper plate support plate 64, the top of the support rod 61, which is equipped with, runs through U-lag 431, and the top of the support rod 61, which is equipped with, to be fixed
Seat 62, the fixing seat 62 are fixed on the top of upper mounting seat 43 by fastener 620, the upper mounting seat 43 be equipped with it is tight
The mounting hole 40 that firmware 620 matches, the lower part of the support rod 61 are installed in limit slot 521, the support rod 61 with
It is connected between scraper plate support plate 64 by several elastic telescopic brackets 63, the scraper plate 65 is mounted in scraper plate support plate 64.
The upper dish driving mechanism 7 further includes the second motor 71 for driving gear driven mechanism 72.The inner cavity of the sand mixing thick tube 1 is certainly
The first mounting groove and the second mounting groove, first supporting guide 11 and the second supporting guide 12 difference are disposed under
It is installed in the first mounting groove and the second mounting groove.The shift plate drives the outer wall and sand mixing thick tube 1 of upper disk 4, shift plate support lower wall 5
Inner wall between several sealing elements are installed.
Utility model works process:
A kind of efficient sand mixer of the utility model, eccentric rabbling mechanism 3, which is stirred material, to be blended, and is stirred outside two
Axis can mix the material of 1 inner circumferential of sand mixing thick tube, can shorten and be blended the time, improve mulling efficiency, can during being blended
With intermittently starting motor 71, drives upper disk 4, shift plate that lower wall 5 is supported to rotate synchronously by shift plate, scraper shift plate component can be driven
6 rotations, elastic telescopic bracket 63 can guarantee that scraper plate 65 is resisted against the inner wall of sand mixing thick tube 1 always, can remove and adhere in time
Molding sand in sand mixer inner walls, so that molding sand is avoided to waste, energy-saving sand resource, and can also ensure that mulling is uniform,
Wherein scraper shift plate component 6 uses detachable structure, easy to disassemble to be cleared up, first when needing to clean scraper shift plate component 6
Fastener 620 is removed from fixing seat 62 first, then pulls out scraper shift plate component 6 upwards, is detached from the lower end of support rod 61
Slot 521 is limited, then pulling out 61 top of support rod and being detached from U-lag 431 can be removed and cleared up, and complete to clear up
The lower end of support rod 61 is inserted into limit slot 521 afterwards, top snaps onto U-lag 431, finally uses fastener 620
It is fixed.
Above-described embodiment is the explanation to the utility model, is not the restriction to the utility model, and any pair of sheet is practical new
Scheme after type simple transformation belongs to the protection scope of the utility model.
Claims (5)
1. a kind of efficient sand mixer, it is characterised in that: including sand mixing thick tube (1), chassis sand mixing gear (2), eccentric rabbling mechanism
(3), shift plate drives upper disk (4), shift plate support lower wall (5), scraper shift plate component (6) and upper dish driving mechanism (7), the mulling
The bottom of cylinder (1) is equipped with chassis sand mixing gear (2), several auxiliary blenders are provided on the chassis sand mixing gear (2)
Structure, the auxiliary rabbling mechanism includes the center convolution agitating shaft (23) being installed on swivel base (22), two outer agitating shafts (24)
With the first driving motor (21) of driving swivel base (22) rotation, the center convolution agitating shaft (23) is installed in swivel base (22)
At the heart, the outer agitating shaft (24) is symmetrically distributed in the two sides of center convolution agitating shaft (23), pacifies on the outer agitating shaft (24)
Equipped with several stirring rod, the bias rabbling mechanism (3) is installed on the top cover of sand mixing thick tube (1), the bias rabbling mechanism
It (3) include the first rabbling mechanism (31) and the second rabbling mechanism (32), first rabbling mechanism (31) and the second rabbling mechanism
(32) it is symmetrical set centered on center convolution agitating shaft (23), the inner cavity of the sand mixing thick tube (1) is set gradually from top to bottom
There are the first supporting guide (11) and the second supporting guide (12), the shift plate drives upper disk (4) to be movably installed in the first support and leads
On rail (11), the upper dish driving mechanism (7) is set to the outside of sand mixing thick tube (1), and the upper dish driving mechanism (7) passes through gear
Driving mechanism (72) controls shift plate and drives upper disk (4) rotation, and shift plate support lower wall (5) is movably installed in the second supporting guide
(12) on, the circumferentially-spaced of multiple scraper shift plate components (6) is distributed in sand mixing thick tube (1), the scraper shift plate component (6)
Upper end, lower end be separately mounted to shift plate and upper disk (4) and shift plate driven to support on lower wall (5), on the scraper shift plate component (6)
Scraper plate (65) equipped with the cooperation that leans with sand mixing thick tube (1) inner wall.
2. a kind of efficient sand mixer as described in claim 1, it is characterised in that: first rabbling mechanism (31) and second
The structure of rabbling mechanism (32) is identical, and long paddle group (311) is arranged at intervals in the shaft of first rabbling mechanism (31)
With short paddle group (312), the long paddle group (311) is made of the 3-5 circumferential long paddle being set in shaft, institute
It states short paddle group (312) to be made of the 3-5 circumferential short paddle being set in shaft, the outer agitating shaft (24) and heart spiral shell
It revolves the distance between agitating shaft (23) and is greater than the distance between the first rabbling mechanism (31) and heart screw agitation shaft (23).
3. a kind of efficient sand mixer as described in claim 1, it is characterised in that: disk (4) further include in the shift plate driving
First support base (41), driven tooth (42), upper mounting seat (43), the shift plate drive the outer ring of upper disk (4) to be equipped with the first support
Seat (41), the lower end of first support base (41) are equipped with the first slide (411) with the first supporting guide (11) activity installation,
The periphery of first support base (41) is equipped with the driven tooth (42) being meshed with gear driven mechanism (72), the shift plate driving
The inner ring of upper disk (4) is symmetrically arranged with two upper mounting seats (43), is equipped with U-lag (431) in the upper mounting seat (43), described to scrape
The upper end of material shift plate component (6) is installed in U-lag (431), and the shift plate drives between upper disk (4), shift plate support lower wall (5)
It is connected by least two connecting rods (400).
4. a kind of efficient sand mixer as claimed in claim 3, it is characterised in that: shift plate support lower wall (5) includes well
The outer ring of second support base (51) and lower mounting seat (52), shift plate support lower wall (5) is equipped with the second support base (51), institute
The lower end for stating the second support base (51) is equipped with the second slide (511) installed with the second supporting guide (12) activity, the shift plate
The inner wall of support lower wall (5) is symmetrically arranged with lower mounting seat (52) corresponding with upper mounting seat (43), the lower mounting seat (52)
Interior to be equipped with limit slot (521), the cross sectional shape of limit slot (521) is circle, the top of limit slot (521)
Chamber (522) are bored equipped with importing, the lower end of the scraper shift plate component (6) is installed in limit slot (521).
5. a kind of efficient sand mixer as claimed in claim 4, it is characterised in that: the scraper shift plate component (6) further includes
The top of support rod (61), fixing seat (62), elastic telescopic bracket (63), scraper plate support plate (64), the support rod (61) is set
Have through U-lag (431), the top of the support rod (61) is equipped with fixing seat (62), and the fixing seat (62) passes through fastener
(620) it is fixed on the top of upper mounting seat (43), the upper mounting seat (43) is equipped with the installation matched with fastener (620)
Hole (40), the lower part of the support rod (61) are installed in limit slot (521), the support rod (61) and scraper plate support plate
(64) it is connected between by several elastic telescopic brackets (63), the scraper plate (65) is mounted on scraper plate support plate (64).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920140629.4U CN209681059U (en) | 2019-01-28 | 2019-01-28 | A kind of efficient sand mixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920140629.4U CN209681059U (en) | 2019-01-28 | 2019-01-28 | A kind of efficient sand mixer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209681059U true CN209681059U (en) | 2019-11-26 |
Family
ID=68600529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920140629.4U Active CN209681059U (en) | 2019-01-28 | 2019-01-28 | A kind of efficient sand mixer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209681059U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109732039A (en) * | 2019-01-28 | 2019-05-10 | 杭州海伦铸钢有限公司 | A kind of efficient sand mixer |
-
2019
- 2019-01-28 CN CN201920140629.4U patent/CN209681059U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109732039A (en) * | 2019-01-28 | 2019-05-10 | 杭州海伦铸钢有限公司 | A kind of efficient sand mixer |
| CN109732039B (en) * | 2019-01-28 | 2024-04-12 | 杭州海伦铸钢有限公司 | Efficient sand mixer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109732039A (en) | A kind of efficient sand mixer | |
| CN208809855U (en) | One kind can rise lid formula multiple-rotor mixer | |
| CN209681059U (en) | A kind of efficient sand mixer | |
| CN203090819U (en) | High-efficient soil conditioner mixer | |
| CN205379820U (en) | Putty powder agitating unit | |
| CN203460377U (en) | Foaming agitator | |
| CN209681058U (en) | A kind of anti-windrow sand mixer | |
| CN209714921U (en) | A kind of flowsheet of slurry agitation device | |
| CN209155618U (en) | Mould wash mixer | |
| CN216458859U (en) | Preparation facilities of 1,4,8, 11-tetranitrogen ring tetradecane | |
| CN212119613U (en) | Slurry stirring device with good stirring effect | |
| CN211279123U (en) | Preparation device for adhesive mortar of external wall insulation board | |
| CN209287148U (en) | Deployment device is used in a kind of production of ferment | |
| CN209478593U (en) | A kind of air entrained concrete pulping agitator | |
| CN209478564U (en) | A kind of mortar mixer | |
| CN217752205U (en) | Modified plastic granules production agitated vessel | |
| CN220780112U (en) | Powder mixer is used in processing of bitter buckwheat tea | |
| CN210633861U (en) | Cement mixer | |
| CN219849088U (en) | Low-temperature stirrer for preparing flavored fermented milk | |
| CN218516464U (en) | Mixing device for producing washing-free surgical hand disinfection gel | |
| CN217868795U (en) | Automatic dispersion equipment of rice wine | |
| CN212017567U (en) | Building structure is agitating unit of leak repairing agent for waterproof leak repairing | |
| CN218393298U (en) | Built-in structure of mixer main shaft | |
| CN217020924U (en) | A horizontal mortar mixer for preparing build mortar by laying bricks or stones | |
| CN215848909U (en) | Multifunctional stirrer convenient to install and detach |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |