CN206860714U - Safety-type wet brake - Google Patents
Safety-type wet brake Download PDFInfo
- Publication number
- CN206860714U CN206860714U CN201720788953.8U CN201720788953U CN206860714U CN 206860714 U CN206860714 U CN 206860714U CN 201720788953 U CN201720788953 U CN 201720788953U CN 206860714 U CN206860714 U CN 206860714U
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- CN
- China
- Prior art keywords
- brake
- safety
- housing
- type wet
- hole
- 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.)
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Abstract
The utility model provides a kind of safety-type wet brake,Including housing,Cylinder sleeve,Brake piston,Movable friction plate and static friction piece,Housing is fixedly arranged on one end of cylinder sleeve,Movable friction plate is mounted on brake axle,Static friction piece is on the inwall of housing,Movable friction plate is staggeredly spaced with static friction piece,Safety-type wet brake also includes cylinder cap,Brake piston is slidedly arranged in cylinder sleeve,The inwall of brake piston and cylinder sleeve forms an oil pocket,Cylinder sleeve is provided with the hydraulic fluid port connected with oil pocket,Flexible member is provided between cylinder cap and brake piston,Brake piston extrudes movable friction plate and static friction piece under the impetus of flexible member,Brake axle is rotatably installed on housing by a bearing,Housing,Cylinder sleeve,Brake piston and bearing surround a sealing cavity,Friction plate is in sealing cavity,Housing is provided with coolant inlet and cooling liquid outlet.It safety-type wet brake in the utility model, friction plate can effectively be cooled, reduce friction plate damage.
Description
Technical field
Brake technology neighborhood is the utility model is related to, more particularly to a kind of safety-type wet brake.
Background technology
The requirement kept the safety in production according to country to colliery and metal mine, dry brake have been forbidden on mine vehicle
Equipment uses, and in order to ensure production safety, meets that the wet brake of requirement of explosion proof is widely used.
Among prior art, the braking principle of the wet brake used at present is that, by discharging braking oil pressure, spring will
Brake piston is promoted to compress movable friction plate group and static friction piece group, because movable friction plate group is generally fixedly arranged on speed change by external splines
On the brake axle of case, and static friction piece group is fixedly arranged on wet brake cylinder body by internal spline, and movable friction plate and static friction
Piece interlocks alternate parallel arranged, under the pressuring action of brake piston, movable friction plate and static friction piece by braking with locked wheels axle and
Braking is produced, when needing to release braking, by injecting braking oil pressure, the elastic force for overcoming spring is promoted braking to live by braking oil pressure
Plug moves away from friction plate, and friction plate unclamps, brake release.
However, because static friction piece and movable friction plate are braked the brake axle to run at high speed by way of mutually holding tightly,
The friction of high intensity is so certainly existed between static friction piece and movable friction plate, after wet brake uses a period of time, its
The temperature of friction plate is high, and the wet brake used at present, and the unlimited mode of its friction plate generally use is arranged, i.e. friction plate
It can not be in a confined space, so as to can not effectively be cooled to friction plate, cause friction plate damage severe, influence
Braking effect.
Utility model content
Based on this, the purpose of this utility model is to provide a kind of safety-type wet braking that can be cooled to friction plate
Device.
A kind of safety-type wet brake, including housing, cylinder sleeve, brake piston, several movable friction plates and several are quiet
Friction plate, the housing are fixedly arranged on one end of the cylinder sleeve, and the movable friction plate is fixedly arranged on brake axle by external splines, described
Static friction piece is fixedly arranged on by internal spline on the inwall of the housing, and the movable friction plate interlocks alternate with the static friction piece
Parallel arranged, the safety-type wet brake also includes being fixedly arranged on cylinder cap of the cylinder sleeve away from the shell one end, described
For brake piston slidably in the cylinder sleeve, the inwall of the brake piston and the cylinder sleeve forms an oil pocket, the cylinder
Put provided with the hydraulic fluid port connected with the oil pocket, some flexible members are provided between the cylinder cap and the brake piston, it is described
Brake piston extrudes the movable friction plate and the static friction piece under the impetus of the flexible member, and the brake axle leads to
Cross a bearing to be rotatably installed on the housing, the housing, the cylinder sleeve, the brake piston and the bearing surround
In the sealing cavity, the side wall of the housing is provided with for one sealing cavity, the static friction piece and the movable friction plate
The coolant inlet and cooling liquid outlet connected with the sealing cavity.
Above-mentioned safety-type wet brake, by setting the bearing, it on the one hand may insure that the brake axle is axially flat
Steady to rotate, on the other hand it is empty can also to surround a sealing with the cylinder sleeve, the brake piston and the bearing for the bearing
Chamber, so that the static friction piece and the movable friction plate are in a sealing cavity, while in the housing
The coolant inlet that is connected with sealing cavity and the cooling liquid outlet are further opened with side wall, therefore is passed through toward the cooling
Liquid entrance injects coolant, and coolant can carry out effective in sealing cavity to the static friction piece and the movable friction plate
Cooling, reduce the friction plate damage, it is ensured that the use that the safety-type wet brake can be safe and reliable.
Further, the brake piston offers some mounting holes on the end face of the cylinder cap, each bullet
Property element be contained in a mounting hole, and one end of the flexible member is installed on the cylinder cap, the elasticity member
The bottom squeeze of the other end of part and the corresponding mounting hole against.
Further, the flexible member is installed on the cylinder cap by an installing plate, and the cylinder cap is each described
A screwed hole is offered on the position of flexible member, the axially penetrate through cylinder cap of the screwed hole along the cylinder cap is described
The outer surface of installing plate is provided with the external screw thread to match with the internal thread of the screwed hole, and the installing plate is screwed corresponding
The screwed hole in.
Further, the consistency of thickness of the thickness of the installing plate and the cylinder cap.
Further, it is installed with a rotation on the end face of the one end of the installing plate away from the corresponding flexible member
Ring.
Further, the first oil sealing is provided between the bearing and the brake axle.
Further, the second oil sealing, second oil are provided between the end face that the housing and the cylinder sleeve are connected with each other
Envelope is close to the brake piston.
Further, the coolant inlet is located at the top of the housing, and the cooling liquid outlet is located at the housing
Bottom, be mounted on a screw plug on the coolant inlet and the cooling liquid outlet.
Further, the cylinder sleeve slides hole provided with first vertically and second slides hole, and described first slides the hole in hole
Footpath is more than the described second aperture for sliding hole, and to form a stage portion, the brake piston includes the first slip being connected with each other
Axle and the second sliding axle, first sliding axle are slidably slided in hole located at described first, and second sliding axle can be slided
Dynamic slides in hole located at described second, and the oil pocket is between the stage portion and first sliding axle.
Further, first sliding axle and described first is slided between the inwall in hole and second sliding axle and institute
State and be equipped with sealing ring between the second inwall for sliding hole.
Brief description of the drawings
Fig. 1 is the structural representation of the safety-type wet brake in the utility model first embodiment.
Fig. 2 is the mplifying structure schematic diagram at I in Fig. 1.
Fig. 3 is the mounting structure schematic diagram of the flexible member in the utility model first embodiment.
Fig. 4 is the schematic view of the mounting position of the safety-type wet brake in the utility model first embodiment.
Main element symbol description：
Following embodiment will further illustrate the utility model with reference to above-mentioned accompanying drawing.
Embodiment
For the ease of understanding the utility model, the utility model is more fully retouched below with reference to relevant drawings
State.Some embodiments of the present utility model are given in accompanying drawing.But the utility model can come in fact in many different forms
It is existing, however it is not limited to embodiment described herein.On the contrary, the purpose for providing these embodiments is made to public affairs of the present utility model
Open content more thorough and comprehensive.
It should be noted that when element is referred to as " being fixedly arranged on " another element, it can be directly on another element
Or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement are for illustrative purposes only.
Unless otherwise defined, all of technologies and scientific terms used here by the article is led with belonging to technology of the present utility model
The implication that the technical staff in domain is generally understood that is identical.It is simply in term used in the description of the present utility model herein
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein " and/or " include
The arbitrary and all combination of one or more related Listed Items.
Fig. 1 to Fig. 3 is referred to, the safety-type wet brake 200 showing in the utility model first embodiment, including
If housing 10, bearing 20, cylinder sleeve 30, brake piston 40, several movable friction plates 50, several static friction pieces 60, cylinder cap 70 and
Dry elasticity element 80.
The housing 10 is cylindrical, and is hollow structure, and the outer surface of described one end of housing 10 is provided with flange, institute
State flange and be provided with several first bolts 11, several described first bolts 11 on the housing 10 center line circumferentially
Array is uniformly arranged, and the safety-type wet brake 200 is mountable on the gearbox of vehicle by first bolt 11,
The free terminal of the brake axle 1 of the gearbox is contained in the housing 10, and the brake axle 1 can by the bearing 20
What is rotated is installed on the housing 10, the brake axle 1, the first oil sealing is provided between the bearing 20 and the brake axle 1
2.The free terminal of the brake axle 1 is provided with external splines, and the inwall of the housing 10 is provided with internal spline.
Further, the side wall of the housing 10 is provided with coolant inlet 12 and cooling liquid outlet 13, the coolant
Entrance 12 is located at the top of the housing 10, and the cooling liquid outlet 13 is located at the bottom of the housing 10, and the coolant enters
A screw plug 14 is mounted on mouth 12 and the cooling liquid outlet 13.
The cylinder sleeve 30 is cylindrical, and is hollow structure, and one end of the cylinder sleeve 30 is with the housing 10 away from described
One end connection of flange.The cylinder sleeve 30 offers rounded first and slides hole and second slide hole vertically, and described first
The aperture for sliding hole is more than the described second aperture for sliding hole, to form a stage portion.The cylinder sleeve 30 is provided with hydraulic fluid port 32, institute
Hydraulic fluid port 32 is stated to be connected with the hydraulic system of vehicle.
Inwall of the brake piston 40 along the cylinder sleeve 30 slidably in the cylinder sleeve 30, and with the cylinder sleeve
30 inwall forms an oil pocket 3, while the housing 10, the cylinder sleeve 20, the brake piston 30 and the bearing 10 surround
One sealing cavity 4, the coolant inlet 12 and the cooling liquid outlet 13 connect with the sealing cavity 4.The braking is lived
Plug 40 is a Step Shaft, and the brake piston 40 includes the first sliding axle and the second sliding axle, and first sliding axle is slidably
Slided located at described first in hole, second sliding axle is slidably slided in hole located at described second, the oil pocket 3
Between the stage portion and first sliding axle, the hydraulic fluid port 32 connects with the oil pocket 3.
Further, first sliding axle and described first is slided between the inwall in hole and second sliding axle and institute
State and be equipped with sealing ring 5 between the second inwall for sliding hole, to prevent the hydraulic fluid leak of the oil pocket 3.
Further, it is provided with the second oil sealing 6 between the end face that the housing 10 and the cylinder sleeve 20 are connected with each other, described the
Two oil sealings 6 are close to the brake piston 40.
Several described movable friction plates 50 are fixedly arranged on the brake axle 1 by the external splines on the brake axle 1, can
The brake axle 1 is followed together to rotate.Several described static friction pieces 60 are fixedly arranged on the housing 10 by the internal spline
On inwall.The movable friction plate 50 and the static friction piece 60 interlock alternate parallel arranged, and the static friction piece 50 and institute
Movable friction plate 60 is stated in the sealing cavity 4, and when in the case of not extruding, the movable friction plate 50 and the static friction
There will be gap between piece 60.
The cylinder cap 70 is covered on the end face of the one end of the cylinder sleeve 30 away from the housing 10, and the cylinder cap 70,
The cylinder sleeve 30 and the housing 10 are integrally fixed structure by several second bolts 31.
Some flexible members 80 are located between the brake piston 40 and the cylinder cap 70, and the brake piston 40 exists
The movable friction plate 50 and the static friction piece 60 (being in on-position) are extruded under the impetus of the flexible member 80.Institute
It is spring to state flexible member 80.Specifically, the brake piston 40 offers some installations on the end face of the cylinder cap 70
Hole 41, each flexible member 80 is contained in a mounting hole 41, and one end of the flexible member 80 passes through one
Installing plate 81 is installed on the cylinder cap 70, and the other end of the flexible member 80 squeezes with the bottom of the corresponding mounting hole 41
Against, to promote the brake piston 40, so that the extrusion friction piece of the brake piston 40.The cylinder cap 70 is each described
A screwed hole 71 is offered on the position of flexible member 80, the screwed hole 71 axially penetrates through the cylinder along the cylinder cap 70
Lid 70, the outer surface of the installing plate 81 are provided with the external screw thread to match with the internal thread of the screwed hole 71, the peace
Loading board 81 is screwed in the corresponding screwed hole 71.The consistency of thickness of the thickness of the installing plate 81 and the cylinder cap 70.Institute
State and a swivel becket 811 is installed with the end face of the one end of installing plate 81 away from the corresponding flexible member 80, it is convenient to rotate institute
State installing plate 81.
Further, the length of the flexible member 80 in a free state is more than the depth of the mounting hole 31, with true
Protect the flexible member 80 and extrude the brake piston 40 all the time, and ensure that brake force is enough.
It should be understood that because the flexible member 80 is connected by the installing plate 81 with the cylinder cap 70, and it is described
Installing plate 81 is screwed on the cylinder cap 70 further through the mode of threaded connection, and the flexible member 80 and the corresponding peace
Dress hole 41 connects simply by contact, Gu pass through the swivel becket 811 corresponding to rotation, you can the installing plate 81 by corresponding to
Disassembled from the cylinder cap 70, and then the flexible member 80 by corresponding to is extracted out, is easy to tearing open for the flexible member 80
Dress.
In addition it should be pointed out that spring is in use for some time, it may appear that the phenomenon of failure, if in the feelings of failure
It is continuing with condition, then causes brake force insufficient, potential safety hazard be present.However, among the present embodiment, due to the elasticity member
Part 80 is easy to dismount, and at regular intervals can take out the flexible member 80, then flexibility test be carried out to it, so as to sentence
Whether the flexible member 80 that breaks fails or more failure long, hypodynamic existing so as to effectively take precautions against generation braking
As.
In order to describe the installation site of the safety-type wet brake 200 in detail, Fig. 4, the speed change case and bag are refer to
Input shaft 7, output shaft 8 and the brake axle 1 are included, the moment of torsion of engine is passed to institute by the input shaft 7 by transmission mechanism
Output shaft 8 is stated, and then the output shaft 8 is driven the vehicle wheel rotation of vehicle, one end of the brake axle 1 passes through gear train and institute
Output shaft 8 is stated to connect, the free terminal of the brake axle 1 is then housed in the housing 10, and with the safety-type wet type system
Dynamic device 200 coordinates braking.When the brake axle 1 freely rotates, the normal rotation of output shaft 8, when the brake axle 1 is made
When dynamic, the output shaft 8 is also braked, therefore can be braked vehicle by braking the brake axle 1.
Describe the operation principle of the safety-type wet brake 200 in detail below in conjunction with four kinds of states：
When vehicle is in driving states：Certain hydraulic oil is injected (by hydraulic pressure to the oil pocket 3 by the hydraulic fluid port 32
System provides), the elastic force for overcoming the flexible member 80 is promoted the brake piston 40 no longer to be squeezed away from friction plate by hydraulic oil
Friction plate is pressed, so as to gap between the movable friction plate 50 and the static friction piece 60 be present, the brake axle 1 can freely turn
It is dynamic, normal vehicle operation.
When vehicle is in service brake state：Under driving states, by control hydraulic system, so that the oil pocket 3
Interior hydraulic oil is back to hydraulic system, and under the extruding of the flexible member 80, the brake piston 40 will be moved to extruding
The movable friction plate 50 and the static friction piece 60 (as depicted in figs. 1 and 2), under squeezing action, the He of movable friction plate 50
The 60 mutual locking of static friction piece so that the brake axle 1 can not rotate, and vehicle realizes braking.
When vehicle is in parking braking state：Parking braking is that the braking of vehicle car slipping is prevented after vehicle stops, now
Due to vehicle parking, engine misses, hydraulic system is not worked, and the hydraulic fluid port 32 is led directly to hydraulic oil container, in the oil pocket 3
Hydraulic oil is by automatic back flow to hydraulic system, and under the extruding of the flexible member 80, the brake piston 40 will be moved to crowded
Press the movable friction plate 50 and the static friction piece 60 so that the brake axle 1 can not rotate, and vehicle realizes parking.
When catastrophic failure occurs in vehicle itself, (such as vehicle casts anchor, pipelines from bursting occurs suddenly for hydraulic system, oil circuit control member
Part failure, oil leakage of hydraulic system etc.) when need to carry out brake hard：This is a kind of state of emergency, and now hydraulic system loses
Control, the hydraulic oil in the oil pocket 3 discharges automatically, and under the extruding of the flexible member 80, the brake piston 40 will move
Move to the movable friction plate 50 and the static friction piece 60 is extruded, so that the movable friction plate 50 and the static friction piece 60 are mutual
Locking so that the brake axle 1 can not rotate, and vehicle realizes brake hard.
In addition, after the safety-type wet brake uses a period of time, can be by the institute of the coolant inlet 12
State screw plug 14 to take out, then by the coolant inlet 12 toward injection cooling oil in the sealing cavity 4, so as to described
Movable friction plate 50 and the static friction piece 60 are cooled.
To sum up, the safety-type wet brake 200 among the utility model above-described embodiment, can be to the static friction piece
50 and the movable friction plate 60 effectively cooled, reduce friction plate damage.Meanwhile by by the flexible member
80 are arranged to be easy to dismount, convenient to carry out flexibility test to the flexible member 80, have effectively taken precautions against generation brake force deficiency
Phenomenon, it is ensured that the use that the safety-type wet brake can be safe and reliable.
Embodiment described above only expresses several embodiments of the present utility model, and its description is more specific and detailed,
But therefore it can not be interpreted as the limitation to the utility model patent scope.It should be pointed out that for the common of this area
For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to
In the scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (10)
1. a kind of safety-type wet brake, including housing, cylinder sleeve, brake piston, several movable friction plates and several quiet rub
Pad, the housing are fixedly arranged on one end of the cylinder sleeve, and the movable friction plate is fixedly arranged on brake axle by external splines, described quiet
Friction plate is fixedly arranged on by internal spline on the inwall of the housing, the movable friction plate and the static friction piece interlock it is alternate and
Row arrangement, it is characterised in that the safety-type wet brake also includes being fixedly arranged on the cylinder sleeve away from the shell one end
Cylinder cap, for the brake piston slidably in the cylinder sleeve, the inwall of the brake piston and the cylinder sleeve forms an oil
Chamber, the cylinder sleeve is provided with the hydraulic fluid port connected with the oil pocket, if being provided with dry elasticity between the cylinder cap and the brake piston
Element, the brake piston extrude the movable friction plate and the static friction piece, institute under the impetus of the flexible member
State brake axle to be rotatably installed on the housing by a bearing, the housing, the cylinder sleeve, the brake piston and institute
State bearing and surround a sealing cavity, the static friction piece and the movable friction plate in the sealing cavity, the housing
Side wall is provided with the coolant inlet connected with the sealing cavity and cooling liquid outlet.
2. safety-type wet brake according to claim 1, it is characterised in that the brake piston is close to the cylinder cap
End face on offer some mounting holes, each flexible member is contained in a mounting hole, and the elasticity member
One end of part is installed on the cylinder cap, and the other end of the flexible member supports with the bottom squeeze of the corresponding mounting hole
Lean on.
3. safety-type wet brake according to claim 2, it is characterised in that the flexible member passes through an installing plate
It is installed on the cylinder cap, the cylinder cap offers a screwed hole, the screw thread on the position of each flexible member
The axially penetrate through cylinder cap of the hole along the cylinder cap, the outer surface of the installing plate are provided with the internal thread with the screwed hole
The external screw thread to match, the installing plate are screwed in the corresponding screwed hole.
4. safety-type wet brake according to claim 3, it is characterised in that the thickness of the installing plate and the cylinder
The consistency of thickness of lid.
5. safety-type wet brake according to claim 3, it is characterised in that the installing plate is away from corresponding described
A swivel becket is installed with the end face of one end of flexible member.
6. safety-type wet brake according to claim 1, it is characterised in that between the bearing and the brake axle
Provided with the first oil sealing.
7. safety-type wet brake according to claim 1, it is characterised in that the housing mutually interconnects with the cylinder sleeve
The second oil sealing is provided between the end face connect, second oil sealing is close to the brake piston.
8. safety-type wet brake according to claim 1, it is characterised in that the coolant inlet is located at the shell
The top of body, the cooling liquid outlet are located at the bottom of the housing, in the coolant inlet and the cooling liquid outlet
One screw plug is installed.
9. safety-type wet brake according to claim 1, it is characterised in that the cylinder sleeve is provided with first and slided vertically
Row hole and second slide hole, the described first aperture for sliding hole is more than the described second aperture for sliding hole, to form a stage portion,
The brake piston includes the first sliding axle and the second sliding axle being connected with each other, and first sliding axle is slidably located at institute
State first to slide in hole, second sliding axle is slidably slided in hole located at described second, and the oil pocket is located at described
Between rank portion and first sliding axle.
10. safety-type wet brake according to claim 9, it is characterised in that first sliding axle and described the
One slides between the inwall in hole and second sliding axle and described second slides and is equipped with sealing ring between the inwall in hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720788953.8U CN206860714U (en) | 2017-07-01 | 2017-07-01 | Safety-type wet brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720788953.8U CN206860714U (en) | 2017-07-01 | 2017-07-01 | Safety-type wet brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206860714U true CN206860714U (en) | 2018-01-09 |
Family
ID=60829596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720788953.8U Expired - Fee Related CN206860714U (en) | 2017-07-01 | 2017-07-01 | Safety-type wet brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206860714U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505894A (en) * | 2018-11-27 | 2019-03-22 | 襄阳全系康动力机械有限责任公司 | A kind of explosion-proof brake structure of wet type |
| CN109538650A (en) * | 2018-11-27 | 2019-03-29 | 襄阳全系康动力机械有限责任公司 | A kind of gearbox wet clutch |
| CN115366858A (en) * | 2022-10-21 | 2022-11-22 | 徐州大利精创传动机械有限公司 | Normally closed type explosion-proof wet braking system |
| CN117329244A (en) * | 2023-12-01 | 2024-01-02 | 山西强力矿用设备制造有限公司 | Hydraulic wet type braking integrated structure |
-
2017
- 2017-07-01 CN CN201720788953.8U patent/CN206860714U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505894A (en) * | 2018-11-27 | 2019-03-22 | 襄阳全系康动力机械有限责任公司 | A kind of explosion-proof brake structure of wet type |
| CN109538650A (en) * | 2018-11-27 | 2019-03-29 | 襄阳全系康动力机械有限责任公司 | A kind of gearbox wet clutch |
| CN115366858A (en) * | 2022-10-21 | 2022-11-22 | 徐州大利精创传动机械有限公司 | Normally closed type explosion-proof wet braking system |
| CN117329244A (en) * | 2023-12-01 | 2024-01-02 | 山西强力矿用设备制造有限公司 | Hydraulic wet type braking integrated structure |
| CN117329244B (en) * | 2023-12-01 | 2024-02-02 | 山西强力矿用设备制造有限公司 | Hydraulic wet type braking integrated structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180109 Termination date: 20180701 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |