CN110284825B - Electric power is with flexible ladder - Google Patents
Electric power is with flexible ladder Download PDFInfo
- Publication number
- CN110284825B CN110284825B CN201910525174.2A CN201910525174A CN110284825B CN 110284825 B CN110284825 B CN 110284825B CN 201910525174 A CN201910525174 A CN 201910525174A CN 110284825 B CN110284825 B CN 110284825B
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- CN
- China
- Prior art keywords
- seat
- groove
- ladder
- rotating
- plate
- 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
- 230000005540 biological transmission Effects 0.000 claims description 4
- 244000309464 bull Species 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 4
- 239000002023 wood Substances 0.000 abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009194 climbing Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C1/00—Ladders in general
- E06C1/02—Ladders in general with rigid longitudinal member or members
- E06C1/14—Ladders capable of standing by themselves
- E06C1/24—Non-hinged free-standing ladders
- E06C1/28—Non-hinged free-standing ladders multi-part
- E06C1/30—Non-hinged free-standing ladders multi-part extensible, e.g. telescopic
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C1/00—Ladders in general
- E06C1/02—Ladders in general with rigid longitudinal member or members
- E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
- E06C1/397—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders characterised by having wheels, rollers, or runners
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/02—Extending means
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/10—Reinforcements for ladders
Abstract
The invention belongs to the technical field of ladder equipment, and particularly relates to a telescopic ladder for electric power, which aims at solving the problem that the height of a ladder for electric power maintenance is not convenient to adjust in the using process of the existing ladder, and most ladders are made of wood, so that the ladder is not too stable. The ladder body lifting device is simple in structure and convenient to use, and can be used for conveniently lifting and clamping the ladder body.
Description
Technical Field
The invention relates to the technical field of ladder equipment, in particular to a telescopic ladder for electric power.
Background
The ladder is made the limit by two long thick poles, and the horizontal pole that is fit for the climbing is passed through in the middle of the ladder for the climbing, and the material and the style of ladder have a lot of, divide aluminum alloy, stainless steel, glass steel, iron, bamboo, wood etc. from the material, divide straight ladder, extension ladder, unilateral ladder, both sides ladder, multi-functional ladder etc. from the style, divide from insulating nature, non-insulation, semi-insulating, full insulation, divide family's ladder, engineering ladder, family engineering dual-purpose ladder, any apparatus of ascending a height from the usage, and its structural configuration is firm reliable.
Because in the power maintenance process, the ladder for power maintenance is used, but the ladder for power maintenance in the current market is inconvenient to adjust the height of the ladder for power maintenance in the using process, most of the ladders are made of wood, so that the ladder is not firm, and the telescopic ladder for power maintenance is provided for solving the problems.
Disclosure of Invention
The invention aims to solve the defects that in the prior art, the height of a ladder for power maintenance is not convenient to adjust in the using process of the ladder, and most of the ladders are made of wood, so that the ladders are not stable.
In order to achieve the purpose, the invention adopts the following technical scheme:
a telescopic ladder for electric power comprises a bottom plate, wherein two connecting plates which are symmetrically arranged are fixedly installed at the top of the bottom plate, square grooves are formed in one side, close to each other, of each connecting plate, thin rods are fixedly installed on the inner wall of the top of each square groove and the inner wall of the bottom of each square groove, a same lifting plate is slidably installed on the two thin rods, a same ladder body is fixedly installed at the top of each lifting plate, one ends of the two symmetrically arranged rotating rods are rotatably installed at the bottom of each lifting plate, a fixing groove is formed in the top of the bottom plate, a rotating column is rotatably installed in the fixing groove, a servo motor is fixedly installed at the bottom of the bottom plate, two symmetrically arranged moving seats are in threaded connection with each rotating column, the tops of the two moving seats extend to the outer side of the fixing groove, the other ends of the rotating rods are rotatably installed, the rotating seat is installed to the rotating groove internal rotation, and the lift groove has all been seted up to one side that two connecting plates kept away from each other, and fixed mounting has same thin post on the top inner wall of lift groove and the bottom inner wall, and slidable mounting has the connecting seat on the thin post, and fixed mounting has the one end of second spring on the top fixed mounting of connecting seat, and the other end fixed mounting of first spring has the lift seat on the top inner wall of lift groove, the round hole has been seted up to one side of connecting plate, has all seted up the circular slot on the top inner wall of round hole and the bottom inner wall, and fixed mounting has same cylinder on the both sides inner wall of circular slot, and slidable mounting has spacing seat on the cylinder, and the bottom of spacing seat extends to the circular slot in and fixed mounting has the sliding seat, and one side of sliding.
Preferably, be equipped with annular spout on the lateral wall of rotary trough, be equipped with annular slider on the rotation seat, annular slider slidable mounting is in annular spout, thereby annular slider and annular spout set up so that rotate more steadily when the seat rotates.
Preferably, one side of removing the seat sets up threaded hole, is equipped with the internal thread on the lateral wall of screw hole, is equipped with two external screw threads that revolve to opposite on the rotary column, and the internal thread meshes with the external screw thread mutually, and the setting up of helicitic texture can drive when making the rotary column rotate and remove the seat and remove.
Preferably, the other side of sliding seat extends to the outside of round hole and fixed mounting has the square plate, and one side fixed mounting of square plate has the one end of a plurality of first springs, and the other end fixed mounting of a plurality of first springs has same clamp plate, the top fixed mounting of lifter plate has the ladder body, and two clamp plates cooperate with the ladder body, install the ladder body on the lifter plate to make the lifter plate can drive the ladder body and go up and down.
Preferably, the bottom of bottom plate fixed mounting four supporting seats that the symmetry set up, rotate on the supporting seat and install the gyro wheel, thereby the setting of gyro wheel makes whole device can remove.
Preferably, servo motor's output shaft extends to in the fixed slot and fixed cover is equipped with first conical gear, fixed cover is equipped with second conical gear on the rotary column, first conical gear meshes with second conical gear mutually, thereby the rotary column can rotate when the setting of first conical gear and second conical gear starts servo motor.
Preferably, the fixed cover is equipped with the pinion on the rotation seat, one side of connecting seat extends to the outside of lift groove and fixed mounting has the rack, and the rack meshes with the pinion mutually, thereby the setting of rack and pinion can drive the rack and remove when making the pinion remove.
Preferably, the both ends of rotary column all extend to the outside of fixed slot and fixed the cover and be equipped with first belt pulley, and the one end of rotating the seat extends to the outside of rotary slot and fixed the cover and is equipped with the second belt pulley, and the transmission is installed on first belt pulley and the second belt pulley has same belt, thereby can drive the second belt pulley and rotate when setting up of belt makes first belt pulley rotate.
In the invention, the telescopic ladder for electric power has the beneficial effects that:
because servo motor, first bevel gear, second bevel gear, the setting of rotary column and bull stick, thereby can drive the ladder body and go up and down, start servo motor, servo motor's output shaft drives first bevel gear and rotates, first bevel gear rotates and drives second bevel gear, second bevel gear rotates and drives the rotary column and rotate, thereby the rotary column rotates and makes two remove the seat and remove towards opposite one side, thereby it removes and drives the bull stick rotation to remove the seat, thereby the bull stick rotates and drives the lifter plate and goes up and down, thereby the lifter plate goes up and down and drives the ladder body and go up and down.
Because first belt pulley, the second belt pulley, rotate the seat, the pinion, the rack, thereby the setting of sliding seat can carry out the centre gripping with the both sides of ladder body, when the rotary column rotates, the rotary column rotates and drives first belt pulley and rotate, first belt pulley rotates and drives the second belt pulley through belt drive effect and rotates, the second belt pulley rotates and drives and rotates the seat rotation, it rotates and drives the pinion and rotate to rotate the seat, pinion rotation drives the rack and removes, the rack removes and drives the lift seat and goes up and down, thereby the lift seat goes up and down and extrudes the sliding seat, thereby the sliding seat removes and drives clamp plate and first spring and remove, thereby carry out the centre gripping with the ladder body.
The ladder body lifting device is simple in structure and convenient to use, and can be used for conveniently lifting and clamping the ladder body.
Drawings
Fig. 1 is a schematic structural view of an electric telescopic ladder according to the present invention;
FIG. 2 is a schematic structural view of a portion A of an electric telescopic ladder according to the present invention;
FIG. 3 is a schematic structural view of a portion B of an electric telescopic ladder according to the present invention;
FIG. 4 is a schematic structural view of a portion C of an electric telescopic ladder according to the present invention;
fig. 5 is a schematic structural diagram of a portion D of an electric telescopic ladder according to the present invention.
In the figure: the device comprises a base plate 1, a connecting plate 2, a fixing groove 3, a rotating column 4, a first belt pulley 5, a belt 6, a servo motor 7, a first bevel gear 8, a second bevel gear 9, a rotating rod 10, a lifting plate 11, a thin rod 12, a rotating seat 13, a second belt pulley 14, a rack 15, a pinion 16, a lifting seat 17, a sliding seat 18, a square plate 19, a first spring 20, a pressing plate 21, a ladder body 22, a square groove 23, a movable seat 24, a rotating rod 25, a limiting groove 26, a rotating groove 27, a circular sliding block 28, a lifting groove 29, a thin column 30, a second spring 31, a connecting seat 32, a circular groove 33, a cylinder 34, a limiting seat 35 and a roller 36.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-5, an electric telescopic ladder comprises a bottom plate 1, two connecting plates 2 symmetrically arranged are fixedly installed at the top of the bottom plate 1, a square groove 23 is formed at one side of each of the two connecting plates 2 close to each other, thin rods 12 are fixedly installed on the inner wall of the top and the inner wall of the bottom of the square groove 23, the same lifting plate 11 is slidably installed on the two thin rods 12, the same ladder body 22 is fixedly installed at the top of the lifting plate 11, one end of two symmetrically arranged rotating rods 10 is rotatably installed at the bottom of the lifting plate 11, a fixed groove 3 is formed at the top of the bottom plate 1, a rotating column 4 is rotatably installed in the fixed groove 3, a servo motor 7 is fixedly installed at the bottom of the bottom plate 1, two symmetrically arranged moving seats 24 are connected to the rotating column 4 through screw threads, the tops of the two moving seats 24 extend to the outer side of the rotating rod 3, the turn trough 27 has all been seted up to one side that two connecting plates 2 kept away from each other, the rotation seat 13 has been installed to turn trough 27 internal rotation, lift groove 29 has all been seted up to one side that two connecting plates 2 kept away from each other, fixed mounting has same thin post 30 on the top inner wall of lift groove 29 and the bottom inner wall, slidable mounting has connecting seat 32 on the thin post 30, the top fixed mounting of connecting seat 32 has the one end of second spring 31, the other end fixed mounting of first spring 31 is on the top inner wall of lift groove 29, rack 15's top fixed mounting has lift seat 17, the round hole has been seted up to one side of connecting plate 2, round groove 33 has all been seted up on the top inner wall of round hole and the bottom inner wall, fixed mounting has same cylinder 34 on the both sides inner wall of round groove 33, slidable mounting has spacing seat 35 on the cylinder 34, the bottom of spacing seat 35 extends to in the round groove 33 and fixed mounting has slide seat 18, one.
In this embodiment, be equipped with annular spout on the lateral wall of commentaries on classics groove 27, be equipped with annular slider 28 on the rotation seat 13, annular slider 28 slidable mounting is in annular spout, thereby annular slider 28 and annular spout set up so that rotate seat 13 more steady when rotating.
In this embodiment, remove one side of seat 24 and seted up threaded hole, be equipped with the internal thread on the lateral wall of screw hole, be equipped with two on the rotary column 4 and revolve to opposite external screw thread, internal thread and external screw thread mesh mutually, and the setting up of helicitic texture can drive when making rotary column 4 rotate and remove seat 24 and remove.
In this embodiment, the other side of sliding seat 18 extends to the outside of round hole and fixed mounting has square plate 19, and one side fixed mounting of square plate 19 has the one end of a plurality of first springs 20, and the other end fixed mounting of a plurality of first springs 20 has same clamp plate 21, and the top fixed mounting of lifter plate 11 has ladder body 22, and two clamp plates 21 cooperate with ladder body 22, install ladder body 22 on lifter plate 11 to make lifter plate 11 can drive ladder body 22 and go up and down.
In this embodiment, the bottom of bottom plate 1 is fixed with four symmetrical supporting seats, and the roller 36 is installed on the supporting seat in a rotating manner, so that the whole device can move due to the arrangement of the roller 36.
In this embodiment, the output shaft of the servo motor 7 extends into the fixing groove 3 and is fixedly sleeved with the first bevel gear 8, the rotating column 4 is fixedly sleeved with the second bevel gear 9, the first bevel gear 8 is meshed with the second bevel gear 9, and the rotating column 4 can rotate when the servo motor 7 is started by the arrangement of the first bevel gear 8 and the second bevel gear 9.
In this embodiment, the rotating base 13 is fixedly sleeved with a pinion 16, one side of the connecting base 32 extends to the outer side of the lifting groove 29 and is fixedly provided with a rack 15, the rack 15 is meshed with the pinion 16, and the rack 15 and the pinion 16 are arranged so that the rack 15 can be driven to move when the pinion 16 rotates.
In this embodiment, the both ends of rotary column 4 all extend to the outside of fixed slot 3 and fixed cover is equipped with first belt pulley 5, and the one end of rotating seat 13 extends to the outside of rotary slot 27 and fixed cover is equipped with second belt pulley 14, and the transmission is installed same belt 6 on first belt pulley 5 and the second belt pulley 14, thereby the setting of belt 6 makes first belt pulley 5 can drive second belt pulley 14 when rotating and rotate.
In this embodiment, a control switch is disposed on the servo motor 7, when the ladder body 22 needs to be lifted, the servo motor 7 is started, an output shaft of the servo motor 7 drives the first bevel gear 8 to rotate, the first bevel gear 8 rotates to drive the second bevel gear 9 to rotate, the second bevel gear 9 rotates to drive the rotary column 4 to rotate, the rotary column 4 rotates to move the two movable seats 24 toward opposite sides, the movable seats 24 move to drive the rotary rod 10 to rotate, the rotary rod 10 rotates to drive the lifting plate 11 to lift, the lifting plate 11 lifts to drive the ladder body 22 to lift, when the rotary column 4 rotates, the rotary column 4 rotates to drive the first belt pulley 5 to rotate, the first belt pulley 5 rotates to drive the second belt pulley 14 to rotate through the transmission effect of the belt 6, the second belt pulley 14 rotates to drive the rotary seat 13 to rotate, the rotary seat 13 rotates to drive the pinion 16 to rotate, the pinion 16 rotates to drive the rack 15 to move, the rack 15 moves to drive the lifting seat 17 to lift, the lifting seat 17 lifts to extrude the sliding seat 18, the sliding seat 18 moves to drive the pressing plate 21 and the first spring 20 to move, and therefore the ladder body 22 can be clamped under the elastic force action of the first spring 20.
Claims (1)
1. The utility model provides an electric telescopic ladder, includes bottom plate (1), its characterized in that, the top fixed mounting of bottom plate (1) has two connecting plates (2) that the symmetry set up, and square groove (23) have all been seted up to one side that two connecting plates (2) are close to each other, and fixed mounting has slender pole (12) on the top inner wall of square groove (23) and the bottom inner wall, and slidable mounting has same lifter plate (11) on two slender poles (12), and the top fixed mounting of lifter plate (11) has same ladder body (22), the bottom of lifter plate (11) is rotated and is installed the one end of two symmetrically arranged bull sticks (10), the top of bottom plate (1) has seted up fixed slot (3), and rotary column (4) is installed in fixed slot (3) rotation, the bottom fixed mounting of bottom plate (1) has servo motor (7), threaded connection has two symmetrically arranged removal seat (24) on rotary column (4), the top parts of the two moving seats (24) extend to the outer side of the fixed groove (3), the other ends of the rotating rods (10) are rotatably installed on the moving seats (24), one sides, far away from each other, of the two connecting plates (2) are respectively provided with a rotating groove (27), the rotating seats (13) are rotatably installed in the rotating grooves (27), one sides, far away from each other, of the two connecting plates (2) are respectively provided with a lifting groove (29), the inner wall of the top part and the inner wall of the bottom part of the lifting groove (29) are fixedly provided with a same thin column (30), the thin columns (30) are respectively provided with a connecting seat (32) in a sliding manner, the top parts of the connecting seats (32) are fixedly provided with one end of a second spring (31), the other ends of the first springs (31) are fixedly installed on the inner wall of the top part of the lifting groove (29), the top parts of, circular grooves (33) are formed in the inner walls of the top and the bottom of each circular hole, the same cylinder (34) is fixedly mounted on the inner walls of the two sides of each circular groove (33), a limiting seat (35) is slidably mounted on each cylinder (34), the bottom end of each limiting seat (35) extends into each circular groove (33) and is fixedly provided with a sliding seat (18), and one side of each sliding seat (18) extends to the outer side of each circular hole and is matched with the lifting seat (17);
an annular sliding groove is formed in the side wall of the rotating groove (27), an annular sliding block (28) is arranged on the rotating seat (13), and the annular sliding block (28) is rotatably installed in the annular sliding groove;
a threaded hole is formed in one side of the movable seat (24), internal threads are formed in the side wall of the threaded hole, two external threads with opposite rotation directions are formed on the rotary column (4), and the internal threads are meshed with the external threads;
the other side of the sliding seat (18) extends to the outer side of the round hole and is fixedly provided with a square plate (19), one side of the square plate (19) is fixedly provided with one end of a plurality of first springs (20), the other end of the plurality of first springs (20) is fixedly provided with the same pressing plate (21), the top of the lifting plate (11) is fixedly provided with a ladder body (22), and the two pressing plates (21) are matched with the ladder body (22);
four symmetrically arranged supporting seats are fixedly arranged at the bottom of the bottom plate (1), and rollers (36) are rotatably arranged on the supporting seats;
an output shaft of the servo motor (7) extends into the fixed groove (3) and is fixedly sleeved with a first bevel gear (8), a second bevel gear (9) is fixedly sleeved on the rotating column (4), and the first bevel gear (8) is meshed with the second bevel gear (9);
a pinion (16) is fixedly sleeved on the rotating seat (13), one side of the connecting seat (32) extends to the outer side of the lifting groove (29) and is fixedly provided with a rack (15), and the rack (15) is meshed with the pinion (16);
the both ends of rotary column (4) all extend to the outside of fixed slot (3) and fixed cover is equipped with first belt pulley (5), and the one end that rotates seat (13) extends to the outside of rotary slot (27) and fixed cover is equipped with second belt pulley (14), and transmission mounting has same belt (6) on first belt pulley (5) and second belt pulley (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910525174.2A CN110284825B (en) | 2019-06-18 | 2019-06-18 | Electric power is with flexible ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910525174.2A CN110284825B (en) | 2019-06-18 | 2019-06-18 | Electric power is with flexible ladder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110284825A CN110284825A (en) | 2019-09-27 |
| CN110284825B true CN110284825B (en) | 2020-10-27 |
Family
ID=68003815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910525174.2A Expired - Fee Related CN110284825B (en) | 2019-06-18 | 2019-06-18 | Electric power is with flexible ladder |
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| Country | Link |
|---|---|
| CN (1) | CN110284825B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110771584A (en) * | 2019-10-30 | 2020-02-11 | 颉鹏飞 | Agricultural plant diseases and insect pests trap and kill device |
| CN110849715A (en) * | 2019-11-18 | 2020-02-28 | 丁永红 | Sampling detection equipment for gas mould processing |
| CN112793791A (en) * | 2021-02-26 | 2021-05-14 | 上海润璋智能科技股份有限公司 | Carry thing unmanned aerial vehicle |
| CN113306303A (en) * | 2021-05-11 | 2021-08-27 | 欧阳诗洁 | Novel automatic laser printer |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IE900151A1 (en) * | 1990-01-15 | 1991-07-17 | Robert Cronin | A Construction of Ladder |
| CN107795265A (en) * | 2016-09-07 | 2018-03-13 | 淄博夸克医药技术有限公司 | A kind of multifunction power maintenance ladder |
| CN207030869U (en) * | 2017-07-15 | 2018-02-23 | 王秀珠 | A kind of fire-fighting lift |
| CN208103820U (en) * | 2018-03-30 | 2018-11-16 | 江苏伊顿电气科技有限公司 | A kind of auxiliary mounting deck for facilitating transformer to install |
| CN108637387A (en) * | 2018-05-02 | 2018-10-12 | 李赵和 | A kind of Metal Cutting Machine Tool easy to use |
| CN109822784A (en) * | 2019-02-27 | 2019-05-31 | 王成军 | A kind of shuttlecock mould structure of manufacture one |
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2019
- 2019-06-18 CN CN201910525174.2A patent/CN110284825B/en not_active Expired - Fee Related
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|---|---|
| CN110284825A (en) | 2019-09-27 |
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Granted publication date: 20201027 Termination date: 20210618 |