CN214026352U - Concrete mixing device - Google Patents
Concrete mixing device Download PDFInfo
- Publication number
- CN214026352U CN214026352U CN202022758863.9U CN202022758863U CN214026352U CN 214026352 U CN214026352 U CN 214026352U CN 202022758863 U CN202022758863 U CN 202022758863U CN 214026352 U CN214026352 U CN 214026352U
- Authority
- CN
- China
- Prior art keywords
- stirring
- bevel gears
- bevel gear
- incomplete
- shafts
- 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
Images
Landscapes
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The utility model is suitable for the field of concrete mixing, and provides a concrete mixing device, which comprises a mixing chamber, wherein two groups of mixing components are rotationally arranged in the mixing chamber, and the axes of the two groups of mixing components are on the same straight line; the transmission mechanism is used for enabling the two groups of stirring components to rotate in opposite directions; and the driving mechanism is used for driving the transmission mechanism to rotate in a reciprocating manner so as to enable the two groups of stirring assemblies to perform stirring operation in a reciprocating manner. The utility model discloses simple structure can make two sets of stirring subassemblies carry out abundant stirring to the concrete material through setting up drive mechanism and actuating mechanism, has improved stirring efficiency.
Description
Technical Field
The utility model belongs to the concrete mixing field especially relates to a concrete mixing device.
Background
The concrete mixing device is a machine for mixing and stirring cement, gravel aggregate and water into a concrete mixture. Although the large-scale concrete mixing device commonly used in industrial production has high mixing efficiency, the structure is more complex and is not suitable for common production; some small concrete mixing devices can only realize simple one-way mixing without an external controller, and the mixing efficiency is low.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the utility model is to provide a concrete mixing device aims at solving the problem of mentioning in the background art.
The embodiment of the utility model provides a realize like this, a concrete mixing device, including the teeter chamber, it is equipped with two sets of stirring subassemblies, two sets of to rotate in the teeter chamber the axis of stirring subassembly is on same straight line, agitating unit still includes:
the transmission mechanism is used for enabling the two groups of stirring components to rotate in opposite directions; the transmission mechanism is rotatably arranged in the stirring chamber;
and the driving mechanism is used for driving the transmission mechanism to rotate in a reciprocating manner so as to enable the two groups of stirring assemblies to perform stirring operation in a reciprocating manner.
Preferably, the transmission mechanism includes:
two first bevel gears; the two first bevel gears are respectively connected with the two groups of stirring components;
two second bevel gears; each second bevel gear is meshed with two first bevel gears;
two first transmission shafts; the two first transmission shafts are rotatably arranged in the stirring chamber; the two second bevel gears are respectively and fixedly arranged at one ends of the two first transmission shafts; the axes of the two first transmission shafts are on the same straight line; the axis of the first transmission shaft is perpendicular to the axis of the stirring assembly.
Preferably, the drive mechanism includes:
two first incomplete bevel gears; the two first incomplete bevel gears are respectively and fixedly arranged at one ends, far away from the second bevel gear, of the two first transmission shafts;
two third bevel gears; the two third bevel gears are respectively meshed with the two first incomplete bevel gears; when one piece of the first incomplete bevel gear and one piece of the third bevel gear start to mesh, the other piece of the first incomplete bevel gear just disengages from the other piece of the third bevel gear;
two second transmission shafts; the two third bevel gears are respectively and fixedly arranged at one ends of the two second transmission shafts;
two fourth bevel gears; the two fourth bevel gears are respectively and fixedly arranged at one ends of the two second transmission shafts far away from the third bevel gear;
two second incomplete bevel gears; the two second incomplete bevel gears are respectively meshed with the two fourth bevel gears; when one piece of the second incomplete bevel gear and one piece of the fourth bevel gear start to mesh, the other piece of the second incomplete bevel gear just disengages from the other piece of the fourth bevel gear;
and the driving assembly is used for driving the two second incomplete bevel gears to rotate in the same direction.
Preferably, the driving assembly includes:
two third transmission shafts; the two second incomplete bevel gears are respectively and fixedly arranged at one ends of the two third transmission shafts;
a first motor; the two third transmission shafts are connected with the first motor; the first motor is a dual-shaft motor.
Preferably, the driving assembly includes:
a fourth drive shaft; the two second incomplete bevel gears are fixedly arranged on the fourth transmission shaft;
a second motor; the fourth transmission shaft is connected with the second motor.
Preferably, two sets of said stirring assemblies comprise:
two stirring shafts; the two stirring shafts are rotatably arranged in the stirring chamber; the two first bevel gears are respectively and fixedly arranged at one ends of the two stirring shafts;
two stirring blades; the two stirring blades are respectively and fixedly arranged on the two stirring shafts; the two stirring blades are both in a spiral shape; the spiral directions of the two stirring blades are opposite.
Preferably, a sleeve is arranged outside the stirring chamber; the sleeve is provided with a plurality of pieces; the two second transmission shafts and the two third transmission shafts are rotatably arranged in the sleeve.
Preferably, the stirring device further comprises:
a protection chamber; the protection chamber is arranged in the stirring chamber; the two first bevel gears and the two second bevel gears are arranged in the protection chamber; the two stirring shafts are rotatably arranged on the protection chamber; and the two first transmission shafts are rotationally arranged on the protection chamber.
Preferably, the number of teeth of the second bevel gear is twice the number of teeth of the first bevel gear.
The embodiment of the utility model provides a concrete stirring device, which can drive two groups of stirring components to stir in opposite directions by arranging a transmission mechanism; through setting up actuating mechanism, can drive mechanism and carry out reciprocal rotation, and then drive two sets of stirring subassemblies and carry out reciprocal stirring operation. The stirring device is simple in structure, can be used for fully stirring concrete materials, and improves the stirring efficiency.
Drawings
Fig. 1 is a schematic structural diagram of a concrete mixing device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a portion a provided in the embodiment of the present invention;
fig. 3 is a schematic partial structural view of a driving mechanism according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another concrete mixing device according to an embodiment of the present invention.
In the drawings: 1. a stirring chamber; 2. a feed inlet; 3. a discharge port; 4. a first motor; 5. a third drive shaft; 6. a sleeve; 7. a second incomplete bevel gear; 8. a fourth bevel gear; 9. a second drive shaft; 10. a third bevel gear; 11. a first incomplete bevel gear; 12. a first drive shaft; 13. a protection chamber; 14. a second bevel gear; 15. a first bevel gear; 16. a stirring shaft; 17. a stirring blade; 18. a second motor; 19. and a fourth transmission shaft.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following detailed description is provided for the specific embodiments of the present invention.
As shown in fig. 1, for the utility model discloses a concrete mixing device, a concrete mixing device that an embodiment provided, including teeter chamber 1, the 1 internal rotation of teeter chamber is equipped with two sets of stirring subassemblies, and is two sets of the axis of stirring subassembly is on same straight line, agitating unit still includes:
the transmission mechanism is used for enabling the two groups of stirring components to rotate in opposite directions; the transmission mechanism is rotationally arranged in the stirring chamber 1;
and the driving mechanism is used for driving the transmission mechanism to rotate in a reciprocating manner so as to enable the two groups of stirring assemblies to perform stirring operation in a reciprocating manner.
In practical application, the concrete mixing device comprises a feeding port 2 and a discharging port 3. In concrete material got into teeter chamber 1 from feed inlet 2, two sets of stirring subassemblies in the teeter chamber 1 carried out reciprocal rotation under drive mechanism and actuating mechanism's effect, and the direction of rotation of first stirring subassembly and second stirring subassembly is opposite all the time, and the material that the stirring was accomplished passes through discharge gate 3 and discharges. The utility model can drive the two groups of stirring components to stir in opposite directions by arranging the transmission mechanism; through setting up actuating mechanism, can drive mechanism and carry out reciprocal rotation, and then drive two sets of stirring subassemblies and carry out reciprocal stirring operation. The stirring device is simple in structure, can be used for fully stirring concrete materials, and improves the stirring efficiency.
As shown in fig. 1 and 2, as a preferred embodiment of the present invention, the transmission mechanism includes:
two pieces of first bevel gears 15; the two first bevel gears 15 are respectively connected with the two groups of stirring components;
two second bevel gears 14; each of the second bevel gears 14 is engaged with two of the first bevel gears 15;
two first transmission shafts 12; the two first transmission shafts 12 are rotatably arranged in the stirring chamber 1; the two second bevel gears 14 are respectively fixedly arranged at one ends of the two first transmission shafts 12; the axes of the two first transmission shafts 12 are on the same straight line; the axis of the first transmission shaft 12 is perpendicular to the axis of the stirring assembly.
Specifically, one first transmission shaft 12 drives a second bevel gear 14 connected with the first transmission shaft to rotate, the second bevel gear 14 drives two first bevel gears 15 to rotate in opposite directions, and the two first bevel gears 15 respectively drive two groups of gears to rotate in opposite directions; the two first bevel gears 15 simultaneously drive the other second bevel gear 14 to rotate, and the second bevel gear 14 drives the first transmission shaft 12 connected with the second bevel gear 14 to rotate; the two second bevel gears 14 rotate in opposite directions, as do the two first drive shafts 12.
As shown in fig. 1 and 3, as a preferred embodiment of the present invention, the driving mechanism includes:
two pieces of the first incomplete bevel gear 11; the two first incomplete bevel gears 11 are respectively and fixedly arranged at one ends, far away from the second bevel gear 14, of the two first transmission shafts 12;
two third bevel gears 10; the two third bevel gears 10 are respectively meshed with the two first incomplete bevel gears 11; when one piece of the first incomplete bevel gear 11 and one piece of the third bevel gear 10 start to mesh, the other piece of the first incomplete bevel gear 11 just disengages from the other piece of the third bevel gear 10;
two second transmission shafts 9; the two third bevel gears 10 are respectively and fixedly arranged at one ends of the two second transmission shafts 9;
two fourth bevel gears 8; the two fourth bevel gears 8 are respectively and fixedly arranged at one ends of the two second transmission shafts 9 far away from the third bevel gear 10;
two second incomplete bevel gears 7; the two second incomplete bevel gears 7 are respectively meshed with the two fourth bevel gears 8; when one piece of the second incomplete bevel gear 7 and one piece of the fourth bevel gear 8 start to mesh, the other piece of the second incomplete bevel gear 7 just disengages from the other piece of the fourth bevel gear 8;
and the driving assembly is used for driving the two second incomplete bevel gears 7 to rotate in the same direction.
Specifically, the driving assembly drives the two second incomplete bevel gears 7 to rotate in the same direction, and when one second incomplete bevel gear 7 and one fourth bevel gear 8 start to be meshed, the other second incomplete bevel gear 7 just disengages from the other fourth bevel gear 8; then, the two fourth bevel gears 8 respectively drive the two second transmission shafts 9 to rotate, the two second transmission shafts 9 respectively drive the two third bevel gears 10 to rotate, and the two third bevel gears 10 respectively drive the two first incomplete bevel gears 11 to rotate; when one first incomplete bevel gear 11 and one third bevel gear 10 start to mesh, the other first incomplete bevel gear 11 just disengages from the other third bevel gear 10; and after the first incomplete bevel gear 11 is disengaged from the third bevel gear 10, the other first incomplete bevel gear 11 is just engaged with the other third bevel gear 10, and the first incomplete bevel gear drives the transmission mechanism to rotate in the direction opposite to the previous direction.
As shown in fig. 1, as a preferred embodiment of the present invention, the driving assembly includes:
two third transmission shafts 5; the two second incomplete bevel gears 7 are respectively and fixedly arranged at one end of the two third transmission shafts 5;
a first motor 4; the two third transmission shafts 5 are connected with the first motor 4; the first motor 4 is a two-shaft motor.
Specifically, first motor 4 is fixed to be set up on teeter chamber 1, and first motor 4 drives two third transmission shafts 5 and rotates toward the same direction, and two third transmission shafts 5 drive two incomplete bevel gear 7 of second and rotate toward the same direction respectively.
As shown in fig. 4, as a preferred embodiment of the present invention, the driving assembly includes:
a fourth transmission shaft 19; the two second incomplete bevel gears 7 are fixedly arranged on the fourth transmission shaft 19;
a second motor 18; the fourth transmission shaft 19 is connected to the second motor 18.
Specifically, the second motor 18 may adopt a double-shaft motor or a single-shaft motor, the second motor 18 drives the fourth transmission shaft 19 to rotate, and the fourth transmission shaft 19 drives the two second incomplete bevel gears 7 arranged thereon to rotate in the same direction.
As shown in fig. 1 and 2, as a preferred embodiment of the present invention, two sets of the stirring assemblies include:
two stirring shafts 16; the two stirring shafts 16 are rotatably arranged in the stirring chamber 1; the two first bevel gears 15 are respectively and fixedly arranged at one ends of the two stirring shafts 16;
two stirring blades 17; the two stirring blades 17 are respectively fixedly arranged on the two stirring shafts 16; the two stirring blades 17 are both spiral; the two stirring blades 17 have opposite spiral directions.
Specifically, the two stirring shafts 16 are driven by the two first bevel gears 15 to rotate in opposite directions, and the two stirring blades 17 stir the concrete material in opposite directions.
As shown in fig. 1, as a preferred embodiment of the present invention, a sleeve 6 is provided outside the stirring chamber 1; the sleeve 6 is provided with a plurality of pieces; the two second transmission shafts 9 and the two third transmission shafts 5 are rotatably arranged in the sleeve 6.
Specifically, each second transmission shaft 9 and each third transmission shaft 5 are rotatably arranged in the two sleeves 6, so that the rotational stability of the transmission shafts is ensured.
As shown in fig. 1, as a preferred embodiment of the present invention, the stirring device further includes:
a protection chamber 13; the protection chamber 13 is arranged in the stirring chamber 1; two pieces of the first bevel gear 15 and two pieces of the second bevel gear 14 are both disposed in the protection chamber 13; the two stirring shafts 16 are rotatably arranged on the protection chamber 13; the two first transmission shafts 12 are rotatably arranged on the protection chamber 13.
Specifically, one end of each of the two stirring shafts 16 penetrates through the protection chamber 13 and is rotatably connected with the penetrating position; one end of each of the two first transmission shafts 12 penetrates through the protection chamber 13 and is rotatably connected with the penetrating position.
As shown in fig. 3, as a preferred embodiment of the present invention, the number of teeth of the second bevel gear 14 is twice the number of teeth of the first bevel gear 15.
Specifically, when the second bevel gear 14 rotates half a revolution, the first bevel gear 15 rotates one revolution.
In summary, in practical application, the driving assembly drives the two second incomplete bevel gears 7 to rotate in the same direction; at this time, a first fourth bevel gear 8 engaged with a first second incomplete bevel gear 7 is driven first, the first fourth bevel gear 8 drives a first third bevel gear 10 to rotate through a first second transmission shaft 9 connected with the first fourth bevel gear 8, the first third bevel gear 10 drives a first incomplete bevel gear 11 engaged with the first third bevel gear to rotate, the first incomplete bevel gear 11 drives a first transmission shaft 12 to rotate, the first transmission shaft 12 drives two first bevel gears 15 to rotate through a first second bevel gear 14 on the first transmission shaft, and the two first bevel gears 15 respectively drive two groups of stirring assemblies to rotate in opposite directions; the two first bevel gears 15 simultaneously drive the second bevel gear 14 to rotate, the second bevel gear 14 then drives the second first transmission shaft 12 and the second first incomplete bevel gear 11 connected with the second incomplete bevel gear to rotate, when the second first incomplete bevel gear 11 rotates to be meshed with the second third bevel gear 10, the first third bevel gear 10 just rotates until the first incomplete bevel gear 11 is disengaged, the first second incomplete bevel gear 7 just rotates to be disengaged from the first fourth bevel gear 8, and the second incomplete bevel gear just rotates to be meshed with the second fourth bevel gear 8; the second incomplete bevel gear drives a second fourth bevel gear 8 to rotate, the second fourth bevel gear 8 drives a second third bevel gear 10 to rotate through a second transmission shaft 9 connected with the second incomplete bevel gear, the second third bevel gear 10 drives a second first incomplete bevel gear 11 meshed with the second incomplete bevel gear to rotate, the second first incomplete bevel gear 11 drives a second first transmission shaft 12 to rotate, the second first transmission shaft 12 drives two first bevel gears 15 to rotate through a second bevel gear 14 on the second incomplete bevel gear, and the two first bevel gears 15 respectively drive two groups of stirring assemblies to respectively rotate in the opposite directions; so circulate to make two sets of stirring subassemblies carry out reciprocating rotation's stirring operation, and the rotation direction is opposite, increase agitating unit is to the stirring efficiency of concrete material.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. The utility model provides a concrete mixing device, includes the teeter chamber, it is equipped with two sets of stirring subassemblies to rotate in the teeter chamber, its characterized in that, two sets of the axis of stirring subassembly is on same straight line, agitating unit still includes:
the transmission mechanism is used for enabling the two groups of stirring components to rotate in opposite directions; the transmission mechanism is rotatably arranged in the stirring chamber;
and the driving mechanism is used for driving the transmission mechanism to rotate in a reciprocating manner so as to enable the two groups of stirring assemblies to perform stirring operation in a reciprocating manner.
2. The concrete mixing apparatus of claim 1, wherein the transmission mechanism comprises:
two first bevel gears; the two first bevel gears are respectively connected with the two groups of stirring components;
two second bevel gears; each second bevel gear is meshed with two first bevel gears;
two first transmission shafts; the two first transmission shafts are rotatably arranged in the stirring chamber; the two second bevel gears are respectively and fixedly arranged at one ends of the two first transmission shafts; the axes of the two first transmission shafts are on the same straight line; the axis of the first transmission shaft is perpendicular to the axis of the stirring assembly.
3. The concrete mixing apparatus of claim 2, wherein the drive mechanism comprises:
two first incomplete bevel gears; the two first incomplete bevel gears are respectively and fixedly arranged at one ends, far away from the second bevel gear, of the two first transmission shafts;
two third bevel gears; the two third bevel gears are respectively meshed with the two first incomplete bevel gears; when one piece of the first incomplete bevel gear and one piece of the third bevel gear start to mesh, the other piece of the first incomplete bevel gear just disengages from the other piece of the third bevel gear;
two second transmission shafts; the two third bevel gears are respectively and fixedly arranged at one ends of the two second transmission shafts;
two fourth bevel gears; the two fourth bevel gears are respectively and fixedly arranged at one ends of the two second transmission shafts far away from the third bevel gear;
two second incomplete bevel gears; the two second incomplete bevel gears are respectively meshed with the two fourth bevel gears; when one piece of the second incomplete bevel gear and one piece of the fourth bevel gear start to mesh, the other piece of the second incomplete bevel gear just disengages from the other piece of the fourth bevel gear;
and the driving assembly is used for driving the two second incomplete bevel gears to rotate in the same direction.
4. A concrete mixing apparatus according to claim 3, wherein the drive assembly comprises:
two third transmission shafts; the two second incomplete bevel gears are respectively and fixedly arranged at one ends of the two third transmission shafts;
a first motor; the two third transmission shafts are connected with the first motor; the first motor is a dual-shaft motor.
5. A concrete mixing apparatus according to claim 3, wherein the drive assembly comprises:
a fourth drive shaft; the two second incomplete bevel gears are fixedly arranged on the fourth transmission shaft;
a second motor; the fourth transmission shaft is connected with the second motor.
6. A concrete mixing apparatus according to claim 3, wherein the two sets of mixing assemblies comprise:
two stirring shafts; the two stirring shafts are rotatably arranged in the stirring chamber; the two first bevel gears are respectively and fixedly arranged at one ends of the two stirring shafts;
two stirring blades; the two stirring blades are respectively and fixedly arranged on the two stirring shafts; the two stirring blades are both in a spiral shape; the spiral directions of the two stirring blades are opposite.
7. A concrete mixing apparatus according to claim 4, wherein a sleeve is provided outside the mixing chamber; the sleeve is provided with a plurality of pieces; the two second transmission shafts and the two third transmission shafts are rotatably arranged in the sleeve.
8. The concrete mixing apparatus of claim 6, further comprising:
a protection chamber; the protection chamber is arranged in the stirring chamber; the two first bevel gears and the two second bevel gears are arranged in the protection chamber; the two stirring shafts are rotatably arranged on the protection chamber; and the two first transmission shafts are rotationally arranged on the protection chamber.
9. The concrete mixing apparatus of claim 2, wherein the second bevel gear has twice as many teeth as the first bevel gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022758863.9U CN214026352U (en) | 2020-11-25 | 2020-11-25 | Concrete mixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022758863.9U CN214026352U (en) | 2020-11-25 | 2020-11-25 | Concrete mixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214026352U true CN214026352U (en) | 2021-08-24 |
Family
ID=77362324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022758863.9U Active CN214026352U (en) | 2020-11-25 | 2020-11-25 | Concrete mixing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214026352U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115416155A (en) * | 2022-07-31 | 2022-12-02 | 华能西藏雅鲁藏布江水电开发投资有限公司 | Concrete mixing device |
-
2020
- 2020-11-25 CN CN202022758863.9U patent/CN214026352U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115416155A (en) * | 2022-07-31 | 2022-12-02 | 华能西藏雅鲁藏布江水电开发投资有限公司 | Concrete mixing device |
| CN115416155B (en) * | 2022-07-31 | 2023-12-01 | 华能西藏雅鲁藏布江水电开发投资有限公司 | Concrete stirring device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN214026352U (en) | Concrete mixing device | |
| CN212888259U (en) | Concrete mixing device for construction | |
| CN211988295U (en) | Blendor for food processing | |
| CN108466365A (en) | A kind of concrete mixer stirred evenly | |
| CN219174925U (en) | Reclaimed asphalt stirring device | |
| CN216000937U (en) | Building engineering construction is with mixing agitated vessel | |
| CN212215249U (en) | Multi-shaft stirring bin for preparing silicon wafer cutting fluid | |
| CN213227087U (en) | Plastic particle mixer | |
| CN211864752U (en) | Homogeneity equipment is used in ink production | |
| CN208244515U (en) | A kind of fertilising fertilizer mixed stirring device | |
| CN214346007U (en) | Double-helix stirring bin | |
| CN207972134U (en) | A kind of twin shaft concrete central mix plant | |
| CN207654984U (en) | A kind of stirring blade of horizontal mixer | |
| CN111359494A (en) | Efficient centrifugal mixer | |
| CN109954431A (en) | A kind of public affairs rotation back taper double worm mixer | |
| CN218573449U (en) | Stirring tank | |
| CN220546848U (en) | Circulation mixing arrangement that petrochemical was used | |
| CN215428586U (en) | Film and granular material stirrer | |
| CN211436037U (en) | Vacuum stirrer | |
| CN217163939U (en) | Raw material mixing device convenient to formaldehyde degrading enzyme production usefulness | |
| CN218012326U (en) | Agitating unit is used in detergent production | |
| CN221048738U (en) | Auxiliary dispersing and stirring mechanism for fiber mixing mortar | |
| CN219502581U (en) | Water-soluble fertilizer emulsifying and chelating device | |
| CN220280015U (en) | Splash-proof type mortar double-shaft mixer | |
| CN220945975U (en) | Mortar stirring device for mortar production |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |