CN211722218U - Electric lifting table - Google Patents
Electric lifting table Download PDFInfo
- Publication number
- CN211722218U CN211722218U CN201922483507.8U CN201922483507U CN211722218U CN 211722218 U CN211722218 U CN 211722218U CN 201922483507 U CN201922483507 U CN 201922483507U CN 211722218 U CN211722218 U CN 211722218U
- Authority
- CN
- China
- Prior art keywords
- beam assembly
- shell
- fasteners
- lifting
- cross beam
- 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
- Tables And Desks Characterized By Structural Shape (AREA)
Abstract
The utility model discloses an electric lifting table, which comprises a table board and a base; a beam assembly; the lifting assembly comprises two lifting upright columns and a driving motor; the length direction of the shell is perpendicular to the length direction of the beam assembly; the first end of the shell in the width direction is rotatably connected with the two inner side walls of the beam assembly through a rotating shaft, two threaded holes are formed in the two outer side walls of the second end of the shell in the width direction, two fasteners are connected with the two threaded holes in an internal thread mode, the outer ends of the two fasteners are arranged on the outer side of the shell in a protruding mode, and radially protruding limiting column heads are arranged at the outer ends of the two fasteners; the beam assembly is provided with two clamping holes for clamping the outer ends of the fasteners, and the outer diameter of the limiting column head is larger than the aperture of the clamping holes. This electric lift table is when expandeing with folding, can avoid the collision of table and the interference of driving motor wiring, and can guide the user to install, realizes installing fast.
Description
Technical Field
The utility model relates to an intelligence office furniture technical field specifically says that an electric lift table.
Background
The lifting table is an office table with adjustable height, can adjust the height according to the height, sitting posture and standing posture of a person, and generally comprises an electric lifting table and a manual lifting table. The electric lifting table in the prior art generally comprises a table top, a base, two lifting stand columns capable of lifting and a cross beam arranged at the bottom of the table top, wherein each lifting stand column comprises a table leg capable of lifting and a driving motor for driving the table leg to lift, the upper end of the table leg is fixedly connected with a shell of the driving motor, and a first end and a second end of the shell of the driving motor are connected with the cross beam through screws; the electric lifting table of this structure is for the convenience of user's installation and saves packing space, generally sets foldable into, and the stand that also goes up and down is collapsible, and the mounting means between this lift stand and the crossbeam generally is: the first end of the shell of the driving motor is rotatably connected to the two inner side walls of the cross beam through two screws in advance, and the two screws are unscrewed; then the lifting upright post is rotated to ensure that the lifting upright post is vertical to the table plate, and then a supporting plate for connecting the bottom of the table plate is arranged on the end surface of the cross beam and is fixed by two screws; then the two screws penetrate through the connecting holes on the supporting plate and are fixedly connected with the second end of the shell of the driving motor in the cross beam; and finally screwing two screws connected with the first end of the shell of the driving motor. Therefore, the installation of the lifting upright post of the electric lifting table is complicated, a user needs to screw a plurality of screws during the installation, the required time is long, the installation is inconvenient, and the requirement of quick installation cannot be met; and when the lifting upright post is folded, two screws connected with the second end of the shell of the driving motor need to be detached, so that the operation is very inconvenient. When the electric lifting table in the prior art is assembled after a user purchases the electric lifting table, the user needs to rely on an installation specification to assemble the electric lifting table because the rotatable lifting upright column does not have the function of guiding installation, and the operation is troublesome. Furthermore, the length direction of the driving motor shell of the electric lifting table in the prior art is consistent with that of the cross beam, the inner end of the driving motor shell is hinged to the cross beam through two screws in advance, and the wiring is arranged on the end face of the inner end of the driving motor shell, so that when the lifting upright post is folded, the wiring can touch the bottom of the table board, or the wiring has an interference effect on the folding of the lifting upright post.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is, overcome the defect of above prior art, provide one kind when expansion and folding, can avoid the collision of table and the interference of driving motor wiring, and can guide the user to install, realize the electric lift table of quick installation.
The technical solution of the utility model is to provide an electric lift table with the following structure: it comprises
A table plate and a base;
the beam assembly is connected to the bottom of the table plate;
the lifting assembly comprises two lifting stand columns and a driving motor for driving the lifting stand columns to lift, the upper ends of the lifting stand columns are fixedly connected with the shell of the driving motor, and the lower ends of the lifting stand columns are connected with the base; the length direction of the shell is perpendicular to the length direction of the beam assembly; the first end of the shell in the width direction is rotatably connected with the two inner side walls of the beam assembly through a rotating shaft, two threaded holes are formed in the two outer side walls of the second end of the shell in the width direction, two fasteners are connected with the two threaded holes in an internal thread mode, the outer ends of the two fasteners are arranged on the outer side of the shell in a protruding mode, and radially protruding limiting column heads are arranged at the outer ends of the two fasteners; the beam assembly is provided with two clamping holes for clamping the outer ends of the fasteners, and the outer diameter of the limiting column head is larger than the aperture of the clamping holes.
Preferably, a side wall of the table near the user is spaced further from the beam assembly than a side wall of the table far from the user.
Preferably, the supporting device further comprises two supporting plates arranged at two ends of the beam assembly, the tops of the two ends of the beam assembly are provided with a notch, the two supporting plates are respectively and fixedly connected in the notches at the two ends of the beam assembly, and the tops of the supporting plates are flush with the top of the beam assembly; the two supporting plates are provided with connecting holes connected with the bottom of the table plate.
Preferably, the two outer side walls of the beam assembly are respectively provided with a through hole which corresponds to and is communicated with the clamping hole on the inner side wall of the beam assembly, and the through hole is used for allowing a screwdriver to be inserted into and tightening a fastener in the clamping hole.
Preferably, the clamping hole is provided with an opening part which is arranged on the bottom wall of the beam assembly and is used for inserting the outer end of the fastener and a containing hole which is arranged on the inner side wall of the beam assembly, the opening part and the containing hole are communicated, and the aperture size of the containing hole is larger than the width size of the opening part; one end of the fastener, which is close to the limiting column head, is provided with a section of convex part which protrudes outwards in the radial direction, and the outer diameter size of the convex part is larger than the width size of the opening part and smaller than the aperture size of the accommodating hole; and under the state that the fastener is screwed down, the convex part is inserted in the accommodating hole.
Preferably, the beam assembly comprises a first beam, a second beam and a connecting rod for connecting the first beam and the second beam, the first beam and the second beam are both composed of two transverse tubes, and a gap for mounting the shell is arranged between the two transverse tubes; one end of the connecting rod is inserted into the two transverse pipes of the first cross beam, the other end of the connecting rod is inserted into the two transverse pipes of the second cross beam, and the two ends of the connecting rod are respectively connected with the first cross beam and the second cross beam through screws.
After the structure more than adopting, the utility model discloses electric lift table compares with prior art, has following advantage: the length direction of a shell of a driving motor of the electric lifting table is perpendicular to the length direction of the beam assembly, and a first end of the shell in the width direction is rotatably connected with two inner side walls of the beam assembly through a rotating shaft; the rotating fulcrum of the shell of the driving motor is changed, when the lifting assembly is unfolded and folded, the shell of the driving motor can avoid the collision of the table board and the interference of the end part wiring of the shell of the driving motor, and the lifting assembly is more convenient to unfold and fold; furthermore, two threaded holes on two outer side walls of the second end of the shell in the width direction are internally connected with two fastening pieces, the outer ends of the two fastening pieces can be clamped into the clamping hole, and the outer diameter size of the limiting column head is larger than the aperture size of the clamping hole; when the lifting stand column is installed, because the first end of the shell of the driving motor is rotatably connected with the two inner side walls of the beam assembly through the rotating shaft, the lifting stand column is rotated to the vertical position, the outer ends of the fasteners on the two outer side walls of the second end of the shell of the driving motor are clamped into the clamping holes, and the second end of the shell of the driving motor can be fixed by screwing the two fasteners with a tool, so that the operation is very simple and convenient. The two fasteners on the two outer side walls of the second end of the shell of the driving motor enable a product to be connected in advance in the two threaded holes of the second end of the shell of the driving motor when leaving a factory, and the two fasteners are not completely screwed into the threaded holes and are in an unscrewing state; therefore, when a user fixes the second end of the shell of the driving motor, the user only needs to screw the two preassembled fasteners in the clamping holes without additionally installing the fasteners; moreover, the first end of the driving motor shell is rotatably connected with the two inner side walls of the beam assembly through the rotating shaft, so that a user does not need to fix the first end of the shell; in addition, when folding the lift stand, only need loosen two fasteners of the second end of shell slightly, and need not to pull down two fasteners, can make two fasteners break away from the card hole on two inside walls of beam assembly to accomplish the folding operation of lift stand. In conclusion, the electric lifting table enables the lifting upright post to be rapidly unfolded, assembled or folded and stored, the lifting upright post does not need to be assembled by a user additionally using a fastener when being unfolded and assembled, and the lifting upright post does not need to be disassembled by the user when being folded and stored, so that the electric lifting table is simple and convenient to operate. The lifting upright post of the electric lifting table can guide a user to install and realize quick installation.
In addition, the distance from one side wall of the table board close to the user to the beam assembly is greater than the distance from one side wall of the table board far away from the user to the beam assembly; that is, the connecting position of the beam assembly at the bottom of the table is arranged at a position far away from the user, or the connecting position of the beam assembly at the bottom of the table deviates from the center of the bottom of the table, and the distance from one side wall of the table close to the user to the beam assembly is greater than the distance from one side wall of the table far away from the user to the beam assembly; the space below the desk plate and close to one side of the user is a space with higher use frequency of the user; set up like this, the space that makes table below be close to user one side is great, makes user's leg can freely place, and the user can not touch driving motor's shell when the shank that moves about, and it is very convenient, safe to use, and user experience feels good.
Furthermore, the opening part of the clamping hole, the shape of the accommodating hole and the arrangement of the protruding part on the fastening piece are arranged, the protruding part is inserted into the accommodating hole in the fastening piece tightening state, and the protruding part is limited by the opening part, so that the fastening piece is prevented from being separated from the clamping hole; this makes the second end of the housing more securely attached.
Drawings
Fig. 1 is a schematic structural view of the electric lifting table of the present invention.
Fig. 2 is a schematic bottom structure view of the electric lifting table of the present invention.
Fig. 3 is a schematic view of a local connection structure of the lifting column of the electric lifting table of the present invention.
Fig. 4 is a schematic structural view of the lifting column of the electric lifting table of the present invention.
Fig. 5 is a schematic view of the connection structure of the support plate of the electric lift table of the present invention.
Fig. 6 is a schematic structural view of the fastening member of the electric lift table of the present invention.
As shown in the figure:
1. the table comprises a table plate, 2, a base, 3, a lifting assembly, 300, a lifting upright post, 301, a shell, 302, a rotating shaft, 303, a fastener, 304, a threaded hole, 305, a limit column cap, 306, a bulge, 4, a beam assembly, 400, a clamping hole, 401, an opening part, 402, a containing hole, 403, a through hole, 404, a first beam, 405, a second beam, 406, a transverse tube, 407, a connecting rod, 408, a notch, 5, a supporting plate, 500 and a connecting hole.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 6;
the utility model relates to an electric lifting table, which comprises a table plate 1 and a base 2; the beam assembly 4 is connected to the bottom of the table board 1; the beam assembly 4 comprises a first beam 404, a second beam 405 and a connecting rod 407 for connecting the first beam 404 and the second beam 405, the first beam 404 and the second beam 405 are both composed of two transverse tubes 406, and a gap for mounting the outer shell 301 is arranged between the two transverse tubes 406; one end of the connecting rod 407 is inserted into the two transverse tubes 406 of the first cross beam 404, the other end of the connecting rod 407 is inserted into the two transverse tubes 406 of the second cross beam 405, and the two ends of the connecting rod 407 are respectively connected with the first cross beam 404 and the second cross beam 405 through screws. The positions of the first beam 404 and the second beam 405 on the connecting rods 407 are adjusted, thereby adjusting the length of the beam assembly 4.
The lifting assembly 3 comprises two lifting columns 300 and a driving motor for driving the lifting columns 300 to lift, the upper ends of the lifting columns 300 are fixedly connected with a shell 301 of the driving motor, and the lower ends of the lifting columns 300 are connected with the base 2; the length direction of the shell 301 is perpendicular to the length direction of the beam assembly 4; a first end of the shell 301 in the width direction is rotatably connected with two inner side walls of the beam assembly 4 through a rotating shaft 302, two threaded holes 304 are formed in two outer side walls of a second end of the shell 301 in the width direction, two fasteners 303 are connected with the two threaded holes 304 in an internal thread mode, outer ends of the two fasteners 303 are arranged on the outer side of the shell 301 in a protruding mode, and limiting column heads 305 protruding outwards in the radial direction are arranged at the outer ends of the two fasteners 303; the beam assembly 4 is provided with two clamping holes 400 for the outer ends of the fasteners 303 to be clamped in, and the outer diameter of the limiting column head 305 is larger than the aperture of the clamping holes 400. Two outer side walls of the beam assembly 4 are respectively provided with a through hole 403 corresponding to and communicated with the clamping hole 400 on the inner side wall of the beam assembly 4, and the through hole 403 is used for allowing a screwdriver to be inserted and screwing the fastener 303 in the clamping hole 400.
The lifting upright post, also called lifting table leg, of the utility model is a product of the prior mature technology, and can refer to the lifting upright post disclosed in the publication number of CN207659000U, or refer to the lifting table leg disclosed in the publication number of CN 207626789U; therefore, the utility model does not explain the structure of the lifting upright column in detail.
The clamping hole 400 is provided with an opening part 401 which is arranged on the bottom wall of the beam assembly 4 and into which the outer end of the fastener 303 is inserted, and a containing hole 402 which is arranged on the inner side wall of the beam assembly 4, the opening part 401 and the containing hole 402 are communicated, and the aperture size of the containing hole 402 is larger than the width size of the opening part 401; one end of the fastener 303 close to the spacing column head 305 is provided with a section of convex protruding part 306, the outer diameter of the protruding part 306 is larger than the width of the opening part 401 and smaller than the aperture size of the containing hole 402; when the fastener 303 is tightened, the protrusion 306 is inserted into the receiving hole 402. When the fastener 303 is tightened, the protruding portion 306 is inserted into the accommodating hole 402, and the protruding portion 306 is limited by the opening 401, so that the fastener 303 is prevented from being separated from the clamping hole 400; this makes the second end of the housing 301 more securely attached.
The supporting device further comprises two supporting plates 5 arranged at two ends of the beam assembly 4, the tops of the two ends of the beam assembly 4 are respectively provided with a notch 408, the two supporting plates 5 are respectively fixedly connected in the notches 408 at the two ends of the beam assembly 4 through screws, and the tops of the supporting plates 5 are flush with the top of the beam assembly 4; the two supporting plates 5 are respectively provided with a connecting hole 500 connected with the bottom of the table board 1. The distance from one side wall of the table board 1 close to the user to the beam assembly 4 is larger than the distance from one side wall of the table board 1 far away from the user to the beam assembly 4. That is, the connecting position of the beam assembly at the bottom of the table is arranged at a position far away from the user, or the connecting position of the beam assembly at the bottom of the table deviates from the center of the bottom of the table, and the distance from one side wall of the table close to the user to the beam assembly is greater than the distance from one side wall of the table far away from the user to the beam assembly; the space below the desk plate and close to one side of the user is a space with higher use frequency of the user; set up like this, the space that makes table below be close to user one side is great, makes user's leg can freely place, and the user can not touch driving motor's shell when the shank that moves about, and it is very convenient, safe to use, and user experience feels good.
The utility model discloses an electric lift table, the lift stand when the installation, because two inside wall rotatable coupling of pivot and beam assembly are passed through to the first end of driving motor's shell, consequently rotate lift stand to vertical position, and make fastener outer end card on two lateral walls of the second end of driving motor's shell go into in the card hole to it can be fixed with the second end of driving motor's shell to screw two fasteners with the instrument, and the operation is very simple, convenient. The two fasteners on the two outer side walls of the second end of the shell of the driving motor enable a product to be connected in advance in the two threaded holes of the second end of the shell of the driving motor when leaving a factory, and the two fasteners are not completely screwed into the threaded holes and are in an unscrewing state; therefore, when a user fixes the second end of the shell of the driving motor, the user only needs to screw the two preassembled fasteners in the clamping holes without additionally installing the fasteners; moreover, the first end of the driving motor shell is rotatably connected with the two inner side walls of the beam assembly through the rotating shaft, so that a user does not need to fix the first end of the shell, and the rotating shaft can be a pre-installed screw; in addition, when folding the lift stand, only need loosen two fasteners of the second end of shell slightly, and need not to pull down two fasteners, can make two fasteners break away from the card hole on two inside walls of beam assembly to accomplish the folding operation of lift stand.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. An electric lifting table is characterized in that: it comprises
A table plate and a base;
the beam assembly is connected to the bottom of the table plate;
the lifting assembly comprises two lifting stand columns and a driving motor for driving the lifting stand columns to lift, the upper ends of the lifting stand columns are fixedly connected with the shell of the driving motor, and the lower ends of the lifting stand columns are connected with the base; the length direction of the shell is perpendicular to the length direction of the beam assembly; the first end of the shell in the width direction is rotatably connected with the two inner side walls of the beam assembly through a rotating shaft, two threaded holes are formed in the two outer side walls of the second end of the shell in the width direction, two fasteners are connected with the two threaded holes in an internal thread mode, the outer ends of the two fasteners are arranged on the outer side of the shell in a protruding mode, and radially protruding limiting column heads are arranged at the outer ends of the two fasteners; the beam assembly is provided with two clamping holes for clamping the outer ends of the fasteners, and the outer diameter of the limiting column head is larger than the aperture of the clamping holes.
2. The motorized lift table of claim 1, wherein: the distance from one side wall of the table board close to the user to the beam assembly is larger than the distance from one side wall of the table board far away from the user to the beam assembly.
3. The motorized lift table of claim 1, wherein: the supporting plate is fixedly connected in the notches at the two ends of the beam assembly respectively, and the tops of the supporting plates are flush with the top of the beam assembly; the two supporting plates are provided with connecting holes connected with the bottom of the table plate.
4. The motorized lift table of claim 1, wherein: and two outer side walls of the beam assembly are respectively provided with a through hole which corresponds to and is communicated with the clamping hole on the inner side wall of the beam assembly, and the through hole is used for allowing a screwdriver to be inserted and tightening a fastener in the clamping hole.
5. The motorized lift table of claim 4, wherein: the clamping hole is provided with an opening part which is arranged on the bottom wall of the beam assembly and is used for inserting the outer end of the fastener and an accommodating hole which is arranged on the inner side wall of the beam assembly, the opening part is communicated with the accommodating hole, and the aperture size of the accommodating hole is larger than the width size of the opening part; one end of the fastener, which is close to the limiting column head, is provided with a section of convex part which protrudes outwards in the radial direction, and the outer diameter size of the convex part is larger than the width size of the opening part and smaller than the aperture size of the accommodating hole; and under the state that the fastener is screwed down, the convex part is inserted in the accommodating hole.
6. The motorized lift table of claim 1, wherein: the cross beam assembly comprises a first cross beam, a second cross beam and a connecting rod for connecting the first cross beam and the second cross beam, the first cross beam and the second cross beam are respectively composed of two transverse tubes, and a gap for mounting the shell is arranged between the two transverse tubes; one end of the connecting rod is inserted into the two transverse pipes of the first cross beam, the other end of the connecting rod is inserted into the two transverse pipes of the second cross beam, and the two ends of the connecting rod are respectively connected with the first cross beam and the second cross beam through screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922483507.8U CN211722218U (en) | 2019-12-30 | 2019-12-30 | Electric lifting table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922483507.8U CN211722218U (en) | 2019-12-30 | 2019-12-30 | Electric lifting table |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211722218U true CN211722218U (en) | 2020-10-23 |
Family
ID=72868324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922483507.8U Active CN211722218U (en) | 2019-12-30 | 2019-12-30 | Electric lifting table |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211722218U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113303590A (en) * | 2021-05-31 | 2021-08-27 | 浙江乐歌智能驱动科技有限公司 | Quick mounting mechanism for transmission rod, lifting table and mounting method |
| CN113940498A (en) * | 2021-09-28 | 2022-01-18 | 乐歌人体工学科技股份有限公司 | Foldable electric lift table |
| WO2022099881A1 (en) * | 2020-11-10 | 2022-05-19 | 德沃康科技集团有限公司 | Folding table frame and folding table |
| GR1010372B (en) * | 2022-05-09 | 2023-01-16 | Αθανασιος Κωνσταντινου Παπαπαναγιωτου | Electric desk's leg connector |
-
2019
- 2019-12-30 CN CN201922483507.8U patent/CN211722218U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022099881A1 (en) * | 2020-11-10 | 2022-05-19 | 德沃康科技集团有限公司 | Folding table frame and folding table |
| CN113303590A (en) * | 2021-05-31 | 2021-08-27 | 浙江乐歌智能驱动科技有限公司 | Quick mounting mechanism for transmission rod, lifting table and mounting method |
| CN113303590B (en) * | 2021-05-31 | 2024-05-24 | 浙江乐歌智能驱动科技有限公司 | Quick installation mechanism for transmission rod, lifting table and installation method |
| CN113940498A (en) * | 2021-09-28 | 2022-01-18 | 乐歌人体工学科技股份有限公司 | Foldable electric lift table |
| CN113940498B (en) * | 2021-09-28 | 2023-02-28 | 乐歌人体工学科技股份有限公司 | Foldable electric lift table |
| GR1010372B (en) * | 2022-05-09 | 2023-01-16 | Αθανασιος Κωνσταντινου Παπαπαναγιωτου | Electric desk's leg connector |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211722218U (en) | Electric lifting table | |
| CN209202318U (en) | Foldable electric same table | |
| CN210581545U (en) | Folding table | |
| CN108813946A (en) | Foldable electric same table | |
| US9677703B2 (en) | Foldable electric fan | |
| CN209450053U (en) | Electric elevatable table | |
| CN108209146B (en) | Upright folding transmission mechanism and electric lifting device | |
| CN210248972U (en) | Portable multi-functional art easel | |
| CN207250011U (en) | A kind of flexible snag showing stand | |
| GB2441966A (en) | Furniture support with detachable legs | |
| CN111938300B (en) | Electric table foot rest easy to assemble and adjust | |
| CN110762363B (en) | Integrated folding foot rest | |
| CN115005598B (en) | Multifunctional art workbench | |
| CN107767844B (en) | Guitar support frame | |
| CN215649806U (en) | Assembled folding bed table for student dormitory | |
| CN210493106U (en) | Foldable electric lift table | |
| CN202959332U (en) | Movable supporting legs and folding table | |
| CN209186130U (en) | A kind of stealthy bed structure of the detachable ladder of band | |
| CN209248844U (en) | A kind of portable college English Teaching panel | |
| CN219125643U (en) | Driving rod baffle fast-assembling structure and table frame | |
| CN206112445U (en) | A stabilize strutting arrangement for portable precision instruments | |
| CN108022573B (en) | Guitar bearing structure | |
| KR200454594Y1 (en) | Portable Soap for Shower | |
| CN209376998U (en) | A kind of improved adjustable folding support foot | |
| CN215958773U (en) | Height-adjustable device for supporting legs and height-adjustable desk and chair with same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |