CN209551586U - A kind of Portable valve maintenance tool - Google Patents
A kind of Portable valve maintenance tool Download PDFInfo
- Publication number
- CN209551586U CN209551586U CN201920108260.9U CN201920108260U CN209551586U CN 209551586 U CN209551586 U CN 209551586U CN 201920108260 U CN201920108260 U CN 201920108260U CN 209551586 U CN209551586 U CN 209551586U
- Authority
- CN
- China
- Prior art keywords
- barrel spanner
- spanner
- outer barrel
- interior barrel
- diameter
- 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
Landscapes
- Mechanically-Actuated Valves (AREA)
Abstract
The utility model discloses a kind of Portable valve maintenance tool, including interior barrel spanner, outer barrel spanner, handle and hexagon, outer barrel spanner is sleeved on the outside of interior barrel spanner, interior barrel spanner is slidably connected with outer barrel spanner, the anti-rotation structure that can prevent the two from relatively rotating is provided on interior barrel spanner and outer barrel spanner, handle passes through outer barrel spanner and is connected with interior barrel spanner, and handle is able to drive interior barrel spanner movement, and hexagon is detachably connected with outer barrel spanner；Interior barrel spanner has claw, and outer barrel spanner has symmetrical two U-shaped gap, and hexagon has hexagonal prisms through-hole.When use, because inner barrel and outer barrel has certain altitude, handwheel edge protrusion will not be touched, and in the Portable valve maintenance tool of the utility model, hexagon can dismount outer-hexagonal components, and barrel spanner can be realized in sliding switches between interior barrel spanner and outer barrel spanner, and the course of work is without frequently replacement tool, it is time saving and energy saving, improve dismounting working efficiency.
Description
Technical field
The utility model relates to hardware tool technical fields, more particularly to a kind of Portable valve maintenance tool.
Background technique
Oil field valve is suitable for the industries such as chemical industry, petroleum, power plant, coal mine, building, steel, light industry and sewage treatment, because
Often there are the objects such as hard particles and fibrous dirt in medium, which is used as headstock gear in pipe-line system, can play pole
Good effect, the way of propelling has manual, pneumatic and electronic etc..Gate valve is one kind of oil field valve, and the opening and closing element of gate valve is lock
Plate, the direction of motion and flow direction of flashboard are perpendicular, and gate valve can only make standard-sized sheet and Quan Guan, cannot make adjustments and throttle.Big portion
Separating brake valve is using forced seal, i.e., when valve is closed, flashboard is pressed to valve seat by force by external force, to guarantee sealing surface
Leakproofness, the flashboard of gate valve is for linear motion with valve rod, is elevating lever gate valve, is also Outside screw stem rising through handwheel type gate valve, is usually rising
There is trapezoidal thread on drop bar, by the guide groove on the nut and valve body of valve tip, rotary motion become moving along a straight line,
Exactly become operation torque to operate thrust.Some gate valves, valve stem nut are located on flashboard, and hand wheel rotating band ovable valve stem rotates,
And flashboard is promoted, this valve is called swingle gate valve, or is inside screw nonrising stem type gate valve.
Open rod type valve is the common device of Oil Field control operating parameter, and it is also flat for carrying out daily maintenance to it
When action.When carrying out cleaning maintenance to such valve copper cover, because of handwheel edge protrusion, when dismounting handwheel locking nut
Maintenance tool, which is in contact with it, will receive obstruction, such as tap dismounting not only valve part easy to damage with logical heart screwdriver, while also depositing
In the security risk for injuring hand.
Therefore, how to change in the prior art, open rod type valve is not easy to assemble and needs to frequently replace the status of tool, is
Those skilled in the art's urgent problem to be solved.
Utility model content
The purpose of the utility model is to provide a kind of Portable valve maintenance tools, above-mentioned of the existing technology to solve
Problem reduces open rod type valve and dismounts difficulty, and without frequently replacement tool under the premise of not damaging valve.
To achieve the above object, the utility model provides following scheme: the utility model provides a kind of Portable valve
Maintenance tool, including interior barrel spanner, outer barrel spanner, handle and hexagon, the outer barrel spanner are sleeved on the interior barrel spanner
Outside, the interior barrel spanner is slidably connected with the outer barrel spanner, the interior barrel spanner and the outer barrel spanner it is relatively sliding
Dynamic direction is parallel with the axis of the interior barrel spanner, and two can be prevented by being provided on the interior barrel spanner and the outer barrel spanner
The anti-rotation structure that person relatively rotates, the handle pass through the outer barrel spanner and are connected with the interior barrel spanner, the handle capable of being
Enough drive the interior barrel spanner mobile, the hexagon is detachably connected with the outer barrel spanner；The interior barrel spanner has
Claw, the outer barrel spanner have symmetrical two U-shaped gap, and the hexagon has hexagonal prisms through-hole.
Preferably, the quantity of the handle is two, and two symmetric handles settings, the handle is pulled with the inner cylinder
Hand is detachably connected.
Preferably, the handle includes connected grasping section and linkage section, the linkage section and the interior barrel spanner screw thread
Connection, the outer cover of the linkage section are loaded pin, and the bayonet lock is connected with linkage section sliding, the bayonet lock and the outer cylinder
Spanner abuts against, and elastic component is arranged between the bayonet lock and the grasping section, and the elastic component is in compressive state.
Preferably, the elastic component is spring, and the elastic component is set in the outside of the linkage section, the linkage section
Diameter is small compared with the diameter for grasping section, and the grasping section makees annular knurl processing.
Preferably, the bayonet lock includes connected rotary table portion and cylindrical portion, and the rotary table portion is relatively large in diameter one end and institute
It states cylindrical portion to be connected, the cylindrical portion is arranged close to the grasping section, and the outer barrel spanner is arranged two groups and mutually fits with the handle
The location structure matched, the location structure include two location holes, and two location holes are along outer cylinder spanner axis side
To setting, the diameter of the location hole is small compared with the maximum gauge in the rotary table portion, the diameter of the location hole rotary table portion
Minimum diameter it is big, be connected between two location holes by interface channel, the width of the interface channel company
The diameter for connecing section is big, and the width of the interface channel is small compared with the minimum diameter in the rotary table portion.
Preferably, the hexagon is threadedly coupled with the outer barrel spanner.
Preferably, the Portable valve maintenance tool further includes tool barrel, and the tool barrel includes lid and cylinder, institute
It states cylinder to be detachably connected with the lid, the cylinder has accommodating space, and the cylinder is set to the interior barrel spanner
The diameter of inside, the lid is big compared with the diameter of the cylinder, and the diameter of the lid is big compared with the internal diameter of the interior barrel spanner.
Preferably, the anti-rotation structure includes sliding rail and sliding slot, and the sliding rail is set to the inner wall of the outer barrel spanner
On, the sliding slot is set on the outer wall of the interior barrel spanner, and the sliding rail is slideably positioned in the sliding slot, the sliding rail
Cross section is rectangle.
Preferably, the quantity of the sliding rail and the sliding slot is respectively four, and the sliding rail and the sliding slot are circumferentially equal
Cloth.
The utility model achieves following technical effect: the Portable valve maintenance of the utility model compared with the existing technology
Tool, including interior barrel spanner, outer barrel spanner, handle and hexagon, outer barrel spanner are sleeved on the outside of interior barrel spanner, and inner cylinder is pulled
Hand is slidably connected with outer barrel spanner, and opposite glide direction is parallel with the axis of interior barrel spanner with outer barrel spanner for interior barrel spanner,
Be provided with the anti-rotation structure that both can prevent relatively rotating on interior barrel spanner and outer barrel spanner, handle pass through outer barrel spanner with
Interior barrel spanner is connected, and handle is able to drive interior barrel spanner movement, and hexagon is detachably connected with outer barrel spanner；Interior barrel spanner tool
There is claw, outer barrel spanner has symmetrical two U-shaped gap, and hexagon has hexagonal prisms through-hole.Use the utility model
Portable valve maintenance tool when dismounting to open rod type valve, because inner barrel and outer barrel has certain altitude, will not touch hand
Edge protrusion is taken turns, and in the Portable valve maintenance tool of the utility model, hexagon can carry out outer-hexagonal components
Dismounting, interior barrel spanner have claw, can dismount to stop nut jaggy, and outer barrel spanner has U-shaped gap, energy
Enough to dismount to the components with protrusion, the course of work is time saving and energy saving without frequently replacing tool, improves dismounting work
Efficiency.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments for those of ordinary skill in the art without any creative labor, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the cutting structural schematic diagram of the Portable valve maintenance tool of the utility model；
Wherein, 1 is interior barrel spanner, and 2 be outer barrel spanner, and 3 be hexagon, and 4 be handle, and 5 be bayonet lock, and 6 be elastic component, 7
For tool barrel.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
The purpose of the utility model is to provide a kind of Portable valve maintenance tools, above-mentioned of the existing technology to solve
Problem reduces open rod type valve and dismounts difficulty, and without frequently replacement tool under the premise of not damaging valve.
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing and have
Body embodiment is described in further detail the utility model.
Referring to FIG. 1, Fig. 1 is the cutting structural schematic diagram of the Portable valve maintenance tool of the utility model.
The utility model provides a kind of Portable valve maintenance tool, including interior barrel spanner 1, outer barrel spanner 2,4 and of handle
Hexagon 3, outer barrel spanner 2 are sleeved on the outside of interior barrel spanner 1, and interior barrel spanner 1 is slidably connected with outer barrel spanner 2, and inner cylinder is pulled
Hand 1 is parallel with the axis of interior barrel spanner 1 with the opposite glide direction of outer barrel spanner 2, sets on interior barrel spanner 1 and outer barrel spanner 2
It is equipped with the anti-rotation structure that can prevent the two from relatively rotating, handle 4 passes through outer barrel spanner 2 and is connected with interior barrel spanner 1, handle 4
It is mobile to be able to drive interior barrel spanner 1, hexagon 3 is detachably connected with outer barrel spanner 2；Interior barrel spanner 1 has claw, and outer cylinder is pulled
Hand 2 has symmetrical two U-shaped gap, and hexagon 3 has hexagonal prisms through-hole.
Using the Portable valve maintenance tool of the utility model, when being dismounted to open rod type valve, because of inner cylinder and outside
Cylinder has certain altitude, will not touch handwheel edge protrusion, and in the Portable valve maintenance tool of the utility model, six sides are pulled
Hand 3 can dismount outer-hexagonal components, and hexagon 3 is detachably connected with outer barrel spanner 2, pull convenient for tool in six sides
It is switched between hand 3 and outer barrel spanner 2, interior barrel spanner 1 has claw, and (claw quantity can need specifically to set according to real work
Set), it can be dismounted to stop nut jaggy, outer barrel spanner 2 has U-shaped gap, can be to zero with protrusion
Component is dismounted, and interior barrel spanner 1 is connected with the sliding of outer barrel spanner 2, is slided interior barrel spanner 1 by handle 4, is made tool in inner cylinder
It is toggled between spanner 1 and outer barrel spanner 2, and anti-rotation structure is set between interior barrel spanner 1 and outer barrel spanner 2, prevent two
Produce relative rotation between person, it is ensured that interior barrel spanner 1 and outer barrel spanner 2 dismount going on smoothly for work, whole work process without
Tool need to be frequently replaced, it is time saving and energy saving, improve dismounting working efficiency.
Wherein, the quantity of handle 4 is two, and two handles 4 are symmetrical arranged, and are exerted a force convenient for operator, mitigates labour personnel
Work load, handle 4 are detachably connected with interior barrel spanner 1.
In addition, handle 4 includes that connected grasping section and linkage section, linkage section are threadedly coupled with interior barrel spanner 1, linkage section
Outer cover is loaded pin 5, and bayonet lock 5 is connected with linkage section sliding, and bayonet lock 5 is abutted against with outer barrel spanner 2, between bayonet lock 5 and grasping section
Elastic component 6 is set, and elastic component 6 is in compressive state.It is real for the ease of the relative position of fixed interior barrel spanner 1 and outer barrel spanner 2
Now smoothly switching therebetween, is provided with bayonet lock 5 and elastic component 6, by bayonet lock 5 towards section sliding is grasped, bayonet lock 5 is enabled to pull with outer cylinder
Hand 2 separates, and enables handle 4 that interior barrel spanner 1 is driven to move up and down to suitable position, unclamps bayonet lock 5, restores deformation in elastic component 6
Under active force, bayonet lock 5 is abutted against with outer barrel spanner 2, and the property of fixed interior barrel spanner 1 and outer barrel spanner 2 is to position.
In this embodiment, elastic component 6 is spring, and elastic component 6 is set in the outside of linkage section, linkage section it is straight
Diameter is small compared with the diameter for grasping section, prevents spring from slipping, and grasp section makees annular knurl processing, increases between handle 4 and operator
Frictional force.
Specifically, bayonet lock 5 includes connected rotary table portion and cylindrical portion, and rotary table portion is relatively large in diameter one end and cylindrical portion phase
Even, two groups of location structures compatible with handle 4 are arranged close to section setting, outer barrel spanner 2 is grasped in cylindrical portion, and location structure includes
Two location holes, two location holes are arranged along outer 2 axis direction of barrel spanner, the maximum gauge of the diameter of location hole compared with rotary table portion
Small, the diameter of location hole is big compared with the minimum diameter in rotary table portion, is connected between two location holes by interface channel, interface channel
Width it is big compared with the diameter of linkage section, the width of interface channel is small compared with the minimum diameter in rotary table portion.Slide two positioning again of bayonet lock 5
It slidably reciprocates between hole, realizes the stretching and withdrawal of interior barrel spanner 1, it is convenient easy to operate, and position stability is further enhanced,
It prevents interior barrel spanner 1 and outer barrel spanner 2 from sliding in use, influences the progress for dismounting work.
More specifically, hexagon 3 is threadedly coupled with outer barrel spanner 2, convenient for being switched fast, the time is saved.
Further, Portable valve maintenance tool further includes tool barrel 7, and tool barrel 7 includes lid and cylinder, cylinder with
Lid is detachably connected, and cylinder has accommodating space, and cylinder is set to the inside of interior barrel spanner 1, and the diameter of lid is compared with cylinder
Diameter is big, and the internal diameter of diameter barrel spanner 1 compared in of lid is big.The setting of tool barrel 7 further improves valve dismounting maintenance
Working efficiency can place some common small tools, use easy to carry in cylinder.
Further, anti-rotation structure includes sliding rail and sliding slot, and sliding rail is set on the inner wall of outer barrel spanner 2, sliding slot
It is set on the outer wall of interior barrel spanner 1, sliding rail is slideably positioned in sliding slot, and the cross section of sliding rail is rectangle, and sliding slot and sliding rail rise
To the effect of transmitting torque, it can prevent interior barrel spanner 1 and outer barrel spanner 2 from relatively rotating, meanwhile, it is pulled in sliding inner cylinder
Guiding role can also be played when hand 1.
In this embodiment, the quantity of sliding rail and sliding slot is respectively four, and sliding rail and sliding slot are evenly distributed, and is enabled
2 uniform force of interior barrel spanner 1 and outer barrel spanner, overall stability when improving tool work.
The Portable valve maintenance tool of the utility model will not touch in use, because inner barrel and outer barrel has certain altitude
Tentacle wheel edge protrusion, and hexagon 3 can dismount outer-hexagonal components, hexagon 3 and outer barrel spanner 2 are removable
Connection is unloaded, is switched between hexagon 3 and outer barrel spanner 2 convenient for tool, interior barrel spanner 1 has claw, can be to band
Stop nut jaggy is dismounted, and outer barrel spanner 2 has U-shaped gap, can be torn open to the components with protrusion
Dress, interior barrel spanner 1 are connected with the sliding of outer barrel spanner 2, drive interior barrel spanner 1 to slide by handle 4, make tool in interior barrel spanner 1
It being toggled between outer barrel spanner 2, bayonet lock 5 and location hole internally can carry out effective position by barrel spanner 1, meanwhile, inner cylinder is pulled
Sliding slot and sliding rail are set between hand 1 and outer barrel spanner 2, while transmitting torque, prevent from producing relative rotation therebetween, it is ensured that
Interior barrel spanner 1 and outer barrel spanner 2 dismount going on smoothly for work, and tool barrel 7, tool is arranged in the inner cavity of interior barrel spanner 1 in addition
Common tool can be placed in cylinder 7, so that whole work process is without frequently replacing tool, it is time saving and energy saving, improve dismounting work
Efficiency.
Specific case is applied in the utility model to be expounded the principles of the present invention and embodiment, it is above
The explanation of embodiment is merely used to help understand the method and its core concept of the utility model；Meanwhile for the one of this field
As technical staff, based on the idea of the present invention, there will be changes in the specific implementation manner and application range.To sum up
Described, the content of the present specification should not be construed as a limitation of the present invention.
Claims (9)
1. a kind of Portable valve maintenance tool, it is characterised in that: including interior barrel spanner, outer barrel spanner, handle and hexagon,
The outer barrel spanner is sleeved on the outside of the interior barrel spanner, and the interior barrel spanner is slidably connected with the outer barrel spanner, described
Interior barrel spanner is parallel with the axis of the interior barrel spanner with the opposite glide direction of the outer barrel spanner, the interior barrel spanner and
The anti-rotation structure that can prevent the two from relatively rotating is provided on the outer barrel spanner, the handle passes through the outer barrel spanner
It is connected with the interior barrel spanner, the handle is able to drive the interior barrel spanner movement, and the hexagon is pulled with the outer cylinder
Hand is detachably connected；The interior barrel spanner has claw, and the outer barrel spanner has symmetrical two U-shaped gap, six side
Spanner has hexagonal prisms through-hole.
2. Portable valve maintenance tool according to claim 1, it is characterised in that: the quantity of the handle is two,
Two symmetric handles settings, the handle are detachably connected with the interior barrel spanner.
3. Portable valve maintenance tool according to claim 2, it is characterised in that: the handle includes connected grasping
Section and linkage section, the linkage section are threadedly coupled with the interior barrel spanner, and the outer cover of the linkage section is loaded pin, the bayonet lock
It is connected with linkage section sliding, the bayonet lock is abutted against with the outer barrel spanner, is set between the bayonet lock and the grasping section
Elastic component is set, the elastic component is in compressive state.
4. Portable valve maintenance tool according to claim 3, it is characterised in that: the elastic component is spring, described
Elastic component is set in the outside of the linkage section, and the diameter of the linkage section is small compared with the diameter for grasping section, the grasping section
Make annular knurl processing.
5. Portable valve maintenance tool according to claim 4, it is characterised in that: the bayonet lock includes connected rotary table
The one end that is relatively large in diameter of portion and cylindrical portion, the rotary table portion is connected with the cylindrical portion, and the cylindrical portion is close to the grasping section
Two groups of location structures compatible with the handle are arranged in setting, the outer barrel spanner, and the location structure includes two positioning
Hole, two location holes are arranged along the outer cylinder spanner axis direction, the diameter of the location hole rotary table portion
Maximum gauge is small, and the diameter of the location hole is big compared with the minimum diameter in the rotary table portion, passes through company between two location holes
It connects road to be connected, the width of the interface channel is big compared with the diameter of the linkage section, and the width of the interface channel is relatively described
The minimum diameter in rotary table portion is small.
6. Portable valve maintenance tool according to claim 1, it is characterised in that: the hexagon and the outer cylinder
Spanner is threadedly coupled.
7. Portable valve maintenance tool according to claim 1, it is characterised in that: it further include tool barrel, the tool
Cylinder includes lid and cylinder, and the cylinder is detachably connected with the lid, and the cylinder has accommodating space, and the cylinder is set
It is placed in the inside of the interior barrel spanner, the diameter of the lid is big compared with the diameter of the cylinder, and the diameter of the lid is relatively described
The internal diameter of interior barrel spanner is big.
8. Portable valve maintenance tool according to claim 1-7, it is characterised in that: the anti-rotation structure
Including sliding rail and sliding slot, the sliding rail is set on the inner wall of the outer barrel spanner, and the sliding slot is set to the interior barrel spanner
Outer wall on, the sliding rail is slideably positioned in the sliding slot, and the cross section of the sliding rail is rectangle.
9. Portable valve maintenance tool according to claim 8, it is characterised in that: the number of the sliding rail and the sliding slot
Amount is respectively four, and the sliding rail and the sliding slot are evenly distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920108260.9U CN209551586U (en) | 2019-01-18 | 2019-01-18 | A kind of Portable valve maintenance tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920108260.9U CN209551586U (en) | 2019-01-18 | 2019-01-18 | A kind of Portable valve maintenance tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209551586U true CN209551586U (en) | 2019-10-29 |
Family
ID=68308776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920108260.9U Expired - Fee Related CN209551586U (en) | 2019-01-18 | 2019-01-18 | A kind of Portable valve maintenance tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209551586U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111645031A (en) * | 2020-05-28 | 2020-09-11 | 华虹半导体(无锡)有限公司 | Photoresist nozzle replacing device |
-
2019
- 2019-01-18 CN CN201920108260.9U patent/CN209551586U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111645031A (en) * | 2020-05-28 | 2020-09-11 | 华虹半导体(无锡)有限公司 | Photoresist nozzle replacing device |
| CN111645031B (en) * | 2020-05-28 | 2022-04-05 | 华虹半导体(无锡)有限公司 | Photoresist nozzle replacing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203948757U (en) | One is changed straight journey hand automatic control check valve easily | |
| CN105538306A (en) | Pneumatic manipulator | |
| CN209551586U (en) | A kind of Portable valve maintenance tool | |
| WO2016065730A1 (en) | Seal ring locked gate valve | |
| CN206054785U (en) | A kind of ball valve of regulating flow quantity | |
| CN104964049A (en) | Telescopic butterfly valve for sealing face | |
| CN204922042U (en) | Telescopic butterfly valve of sealed face | |
| CN203322442U (en) | Shutoff valve driven by electric push rod | |
| CN103615553A (en) | Anti-collision valve for fore peak | |
| CN113251170A (en) | Double-handwheel active sealing ball valve | |
| CN209524107U (en) | A kind of manual vacuum ball valve for being easy to take one's bearings and clean | |
| CN101670518B (en) | Automatic rotary drawing machine | |
| CN204961848U (en) | Manual planet roller screw transmission stop valve | |
| CN217207803U (en) | Manual and pneumatic switching mechanism of double-acting straight-stroke air cylinder | |
| CN209524099U (en) | A kind of butterfly valve rod positioning device | |
| CN211474989U (en) | Gate valve for coke workshop | |
| CN204263055U (en) | A kind of tap wrench | |
| CN219529452U (en) | Hydraulic cylinder with dustproof structure | |
| CN217081454U (en) | High-performance pneumatic butterfly valve | |
| CN204477346U (en) | Movable sealing pottery blade type gate valve | |
| CN215568079U (en) | Double-handwheel active sealing ball valve | |
| CN220435461U (en) | Novel ball valve of connection | |
| CN217381655U (en) | Extension bar zero-leakage pneumatic butterfly valve | |
| CN204772286U (en) | Pneumatic spanner | |
| CN218992379U (en) | Clamp type butterfly valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191029 Termination date: 20210118 |