CN203532857U - Pulse magnetic valve - Google Patents
Pulse magnetic valve Download PDFInfo
- Publication number
- CN203532857U CN203532857U CN201320546922.3U CN201320546922U CN203532857U CN 203532857 U CN203532857 U CN 203532857U CN 201320546922 U CN201320546922 U CN 201320546922U CN 203532857 U CN203532857 U CN 203532857U
- Authority
- CN
- China
- Prior art keywords
- valve
- gas port
- impulse electromagnetic
- chamber
- solenoid valve
- 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
Images
Abstract
The utility model discloses a pulse magnetic valve for railway vehicle parking brake systems. The pulse magnetic valve comprises a two-position five-way magnetic valve, and further comprises a valve body (7), a guide sleeve (8) and a valve rod (9), and the valve rod (9) is sequentially connected with the guide sleeve (8) and the valve body (7). The magnetic valve comprises a left magnetic valve part (13) and a right magnetic valve part (14), coils of the left magnetic valve part (13) and coils of the right magnetic valve part (14) are alternately powered on to enable the valve rod (9) to move. According to the pulse magnetic valve, a double-coil structure is adopted, both electric control operation and manual control can be achieved, a piston sealing face is sealed by a K-shaped ring, and therefore friction force of the valve rod can be effectively reduced and service life can be prolonged. The pulse magnetic valve is simple in structure, convenient to install and use, high in response speed and capable of being electrified for a long time, and has good waterproof and dustproof capacity, fatigue resistance and high-low temperature resistance and can meet demands of locomotives for being used under severe environments for a long time.
Description
Technical field
The utility model relates to vehicle brake technology field, is specifically related to a kind of impulse electromagnetic valve for rail vehicle parking brake system.
Background technique
Solenoid valve utilizes the power on/off of electromagnetic coil to control adhesive and the release of iron core, realizes the break-make of gas circuit.By wire, by electromagnetic valve body interior loop input direct impulse signal, coil produces magnetic flux, makes iron core adhesive, opens valve; When stopping the input of direct impulse signal, iron core discharges, and iron core is returned to original state under the effect of spring force, throttle down; Also have in addition self-hold, also can keep after stopping inputting direct impulse or power-off, need to input negative-going pulse signal could reset.For impulse electromagnetic valve, it utilizes the pulse of electrical equipment to be converted into mechanical pulsation, makes the powerful energy of pulsed gas become momentum and discharge at short notice, produces huge impulse force.
As the publication number Chinese utility model patent that is CN2613649Y, a kind of impulse electromagnetic valve is disclosed, comprise valve body and influent stream road, valve pocket, valve seat, go out runner, armature formula spool, valve pocket, spool, influent stream road and go out runner and be and be coaxially set, electromagnetic coil overcoat has and is axially bar shaped and U-iron that axially section takes the shape of the letter U, there is sucker the rear end of spool, and there is lock-nut one end of valve body.The valve pocket of this impulse electromagnetic valve, spool, influent stream road and go out runner and be the structure being coaxially set, can guarantee the motion same tropism of spool when high frequency keying work, and in the time of making spool close accurately and reliably, unlatching frictional loss is little, its U-iron structure, when electromagnetic coil On current, can make magnetic field strengthen.On electromagnetic coil, during tape pulse signal power source, electromagnetic coil produces pulsed magnet field, and spool, under the effect of pulse-electromagnetic force, is opened with the valve seat matching, closing motion, realizes the switching motion of impulse electromagnetic valve.
For the impulse electromagnetic valve of motor vehicle braking system, the performance that need to have, be convenient to install and use, also to can adapt to severe working environment.
Model utility content
In order to solve the problems of the technologies described above, the utility model provides a kind of impulse electromagnetic valve for rail vehicle parking brake system, and it has two coil configuration, can either electric control operation, also can manually control, its piston seal face adopts the sealing of K shape circle, to reduce the frictional force of valve rod.
To achieve these goals, the utility model adopts following technological scheme.
An impulse electromagnetic valve, comprises solenoid valve, valve body, guide pin bushing, valve rod, and valve rod is connected successively with guide pin bushing, valve body, and solenoid valve is two-position-five-way solenoid valve, and it has left side solenoid valve and right side solenoid valve; The left side electromagnetic valve coil of solenoid valve and the electromagnetic valve coil alternate energisation of right side solenoid valve, realize the motion of valve rod.
Preferably, the left side of described valve rod has left side push rod.
In above-mentioned arbitrary technological scheme, preferably, on the push rod of described left side, be fixed with left side top stem casing.
In above-mentioned arbitrary technological scheme, preferably, described left side top stem casing and described left side push rod are fixed by elastic cylindrical pin, and centre is provided with left side return spring.
In above-mentioned arbitrary technological scheme, preferably, the right side of described valve rod has right side push rod.
In above-mentioned arbitrary technological scheme, preferably, on the push rod of described right side, be fixed with right side top stem casing.
In above-mentioned arbitrary technological scheme, preferably, described right side top stem casing and described right side push rod are fixed by elastic cylindrical pin, and centre is provided with right side return spring.
In above-mentioned arbitrary technological scheme, preferably, described guide pin bushing and described valve rod seal by K shape circle.
In above-mentioned arbitrary technological scheme, preferably, the vent place of described guide pin bushing is provided with chamfering.
In above-mentioned arbitrary technological scheme, preferably, the two ends, left and right of described valve body are also connected with side cover.
In above-mentioned arbitrary technological scheme, preferably, described guide pin bushing is fastening by side cover and described valve body location.
In above-mentioned arbitrary technological scheme, preferably, on described left side solenoid valve and right side solenoid valve, air-filtering assembly is all installed.
In above-mentioned arbitrary technological scheme, preferably, described air-filtering assembly comprises gas port, filter element.
In above-mentioned arbitrary technological scheme, preferably, described left side solenoid valve has the first valve pocket.
In above-mentioned arbitrary technological scheme, preferably, described right side solenoid valve has the second valve pocket.
In above-mentioned arbitrary technological scheme, preferably, described valve body bottom has five ventilating holes, and it is respectively A gas port, B gas port, R gas port, P gas port, S gas port.
In above-mentioned arbitrary technological scheme, preferably, have five air cavitys in described valve body, it is respectively A chamber, B chamber, R chamber, P chamber, S chamber.
In above-mentioned arbitrary technological scheme, preferably, described P gas port is communicated with P chamber.
In above-mentioned arbitrary technological scheme, preferably, described A gas port is communicated with A chamber.
In above-mentioned arbitrary technological scheme, preferably, described B gas port is communicated with B chamber.
In above-mentioned arbitrary technological scheme, preferably, described R gas port is communicated with R chamber.
In above-mentioned arbitrary technological scheme, preferably, described S gas port is communicated with S chamber.
In above-mentioned arbitrary technological scheme, preferably, described P gas port is inlet opening.
In above-mentioned arbitrary technological scheme, preferably, described A gas port, B gas port are delivery outlet.
In above-mentioned arbitrary technological scheme, preferably, described R gas port, S gas port are relief opening.
In above-mentioned arbitrary technological scheme, preferably, described P chamber is communicated with described the first valve pocket, the second valve pocket.
Impulse electromagnetic valve of the present utility model comprises the combination in any of above various features.
Impulse electromagnetic valve of the present utility model, comprise solenoid valve, solenoid valve is two-position-five-way solenoid valve, also comprise valve body, guide pin bushing, valve rod, valve rod is connected successively with guide pin bushing, valve body, solenoid valve has left side solenoid valve and right side solenoid valve, and the coil alternate energisation of the coil of left side solenoid valve and right side solenoid valve is realized the motion of valve rod.Impulse electromagnetic valve of the present utility model can be used for rail vehicle parking brake system, simple in structure, is convenient to install and use.
Impulse electromagnetic valve of the present utility model is dual coil electromagnetic valve arrangement, can either electric control operation, also can manually control, and its piston seal face adopts the sealing of K shape circle, can effectively reduce the frictional force of valve rod.
Impulse electromagnetic valve of the present utility model also has following characteristics:
(1) this impulse electromagnetic valve is two coil configuration, gives two coil alternate energisations, just can realize the motion of valve rod;
(2) fast response time, can switch on for a long time, has good waterproof and dustproof ability;
(3) two control modes realize its function, and one is that electricity consumption is controlled, and one is with manually controlling;
(4) piston seal face adopts K shape circle, can realize better sealing, reduces the frictional force of valve rod, increases the working life of impulse electromagnetic valve;
(5) this impulse electromagnetic valve belongs to two-position-five-way solenoid valve, can be used for the contrary gas circuit switched system in the left and right sides;
(6) have endurance and high and low temperature resistance, long service life, can meet locomotive and use for a long time and under rugged environment.
Accompanying drawing explanation
Fig. 1 is according to the internal structure schematic diagram of a preferred embodiment of impulse electromagnetic valve of the present utility model;
Fig. 2 is according to the internal structure plan view of a preferred embodiment of impulse electromagnetic valve of the present utility model.
Reference character:
A:A gas port, B:B gas port, R:R gas port, P:P gas port, S:S gas port;
Q1: the first valve pocket, Q2: the second valve pocket
A:A chamber, b:B chamber, r:R chamber, p:P chamber, s:S chamber;
1: right side top stem casing, 2: elastic cylindrical pin, 3: right side push rod, 4: right side return spring, 5: side cover, 6:K shape circle, 7: valve body, 8: guide pin bushing, 9: valve rod, 10: left side push rod, 11: left side return spring, 12: left side top stem casing, 13: left side solenoid valve, 14: right side solenoid valve, 15: air-filtering assembly.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated, below describe only conduct demonstration and explain, the utility model is not done to any pro forma restriction.
As depicted in figs. 1 and 2, a kind of impulse electromagnetic valve, comprise solenoid valve, valve body 7, guide pin bushing 8, valve rod 9, valve rod 9 is connected successively with guide pin bushing 8, valve body 7, the left side of valve rod 9 has left side push rod 10, is fixed with left side top stem casing 12 on left side push rod 10, and left side top stem casing 12 is fixed by elastic cylindrical pin 2 with left side push rod 10, and centre is provided with left side return spring 11, left side return spring 11 impels the initial position of left side top stem casing 12 in releasing state.The right side of valve rod 9 have right side push rod 3,, on right side push rod 3, be fixed with right side top stem casing 1, right side top stem casing 1 is fixed by elastic cylindrical pin 2 with right side push rod 3, and centre is provided with right side return spring 4, right side return spring 4 impels the initial position of right side top stem casing 1 in releasing state.
Guide pin bushing 8 seals by K shape circle 6 with valve rod 9, and the vent place of guide pin bushing 8 is provided with chamfering.During valve rod 9 work, can on guide pin bushing 8, slide, can make K shape circle 6 breakage that easily rubs at the vent place of guide pin bushing 8, should establish chamfering in this vent place at guide pin bushing 8, to alleviate wearing and tearing, increase working life.
The two ends, left and right of valve body 7 are also connected with side cover 5, and guide pin bushing 8 is fastening with valve body 7 location by side cover 5, has guaranteed stroke and the latus rectum requirement of valve rod 9.
This solenoid valve is two-position-five-way solenoid valve, and it has left side solenoid valve 13 and right side solenoid valve 14, and the coil alternate energisation of the coil of left side solenoid valve 13 and right side solenoid valve 14 is realized the motion of valve rod 9.On left side solenoid valve 13 and right side solenoid valve 14, air-filtering assembly 15 is all installed, it is for air-filtering.Air-filtering assembly 15 comprises gas port, filter element.Left side solenoid valve 13 has the first valve pocket Q1, and right side solenoid valve 14 has the second valve pocket Q2.In conjunction with Fig. 1 and Fig. 2, can see, valve body 7 bottoms have five ventilating holes, and it is respectively A gas port, B gas port, R gas port, P gas port, S gas port; In valve body 7, have five air cavitys, it is respectively A chamber, B chamber, R chamber, P chamber, S chamber.Wherein, P gas port is communicated with P chamber, and A gas port is communicated with A chamber, and B gas port is communicated with B chamber, and R gas port is communicated with R chamber, and S gas port is communicated with S chamber, and P gas port is inlet opening.A gas port, B gas port are delivery outlet, and R gas port, S gas port are relief opening, and P chamber is communicated with described the first valve pocket, the second valve pocket.
The impulse electromagnetic valve of this technological scheme, comprises solenoid valve, and solenoid valve is two-position-five-way solenoid valve, can be used for the contrary gas circuit switched system in the left and right sides; It also comprises valve body, guide pin bushing, valve rod, and valve rod is connected successively with guide pin bushing, valve body, and solenoid valve has left side solenoid valve and right side solenoid valve, and the coil alternate energisation of the coil of left side solenoid valve and right side solenoid valve is realized the motion of valve rod.Impulse electromagnetic valve is for rail vehicle parking brake system, simple in structure, is convenient to install and use.
The impulse electromagnetic valve of this technological scheme is dual coil electromagnetic valve arrangement, can either electric control operation, also can manually control, and its piston seal face adopts the sealing of K shape circle, can effectively reduce the frictional force of valve rod, increases the service life.In addition, this impulse electromagnetic valve fast response time, can switch on for a long time, has good waterproof and dustproof ability; Have endurance and high and low temperature resistance, long service life, can meet locomotive and use for a long time and under rugged environment.
In concrete enforcement, paired pulses solenoid valve carries out automatically controlled or manual mode operation, realizes its function.
Electric control operation process:
Give inlet opening P gas port air inlet, give left side solenoid valve 13 energisings, moving iron core, with static iron core adhesive, imports the first valve pocket Q1 by P chamber, inlet opening pressurized air.Simultaneously power-off right side solenoid valve 14, make the second valve pocket Q2 lead to atmosphere, and valve rod 9 is under the atmospheric pressure effect of the first valve pocket Q1, and overcome friction moves to the right, by the air of the second valve pocket Q2 discharged to atmosphere.Till valve rod 9 moves to and contacts with right side push rod 3.Now inlet opening P gas port and the cut-off of delivery outlet A gas port, delivery outlet A gas port and the conducting of relief opening R gas port, inlet opening P gas port and the conducting of delivery outlet B gas port, delivery outlet B gas port and the cut-off of relief opening S gas port.
Then moving to 14 energisings of right side solenoid valve again, iron core, with static iron core adhesive, imports the second valve pocket Q2 by the pressurized air of inlet opening P gas port end.Simultaneously power-off left side solenoid valve 13, makes the first valve pocket Q1 lead to atmosphere, and valve rod 9 is under the atmospheric pressure effect of the second valve pocket Q2, and overcome friction moves to the left, by the air of the first valve pocket Q1 discharged to atmosphere.Till valve rod 9 moves to and contacts with left side push rod 10.Now inlet opening P gas port and the conducting of delivery outlet A gas port, delivery outlet A gas port and the cut-off of exhaust R gas port, inlet opening P gas port and the cut-off of delivery outlet B gas port, delivery outlet B gas port and the conducting of relief opening S gas port.
Manually-operable (using under the solenoid valve power-off of the left and right sides) process:
Manually exert pressure to right side top stem casing 1, valve rod 9 is moved to the left, till contacting with left side push rod 10, stop being applied to the pressure of top stem casing 1, right side push rod 3 and right side top stem casing 1 return under the effect of right side return spring 4, now inlet opening P gas port and the conducting of delivery outlet A gas port, delivery outlet A gas port and the cut-off of exhaust R gas port, inlet opening P gas port and the cut-off of delivery outlet B gas port, delivery outlet B gas port and the conducting of relief opening S gas port.
Then to left side top stem casing 12, exert pressure again, till valve rod 9 being moved right to contact with right side push rod 3, stop being applied to the pressure of left side top stem casing 12, left side push rod 10 and left side top stem casing 12 return under the effect of left side return spring 11, now inlet opening P gas port and the cut-off of delivery outlet A gas port, delivery outlet A gas port and the conducting of relief opening R gas port, inlet opening P gas port and the conducting of delivery outlet B gas port, delivery outlet B gas port and the cut-off of relief opening S gas port.
The above is only that preferred implementation of the present utility model is described; not that scope of the present utility model is limited; do not departing under the prerequisite of the utility model design spirit; various distortion and improvement that the common engineers and technicians in related domain make the technical solution of the utility model, all should fall in the definite protection domain of claims of the present utility model.
Claims (26)
1. an impulse electromagnetic valve, comprise solenoid valve, valve body (7), guide pin bushing (8), valve rod (9), described valve rod (9) is connected successively with guide pin bushing (8), valve body (7), it is characterized in that: described solenoid valve is two-position-five-way solenoid valve, it has left side solenoid valve (13), right side solenoid valve (14); The electromagnetic valve coil alternate energisation of the electromagnetic valve coil of described left side solenoid valve (13) and right side solenoid valve (14) is realized the motion of valve rod (9).
2. impulse electromagnetic valve as claimed in claim 1, is characterized in that: the left side of described valve rod (9) has left side push rod (10).
3. impulse electromagnetic valve as claimed in claim 2, is characterized in that: on described left side push rod (10), be fixed with left side top stem casing (12).
4. impulse electromagnetic valve as claimed in claim 3, is characterized in that: described left side top stem casing (12) is fixed by elastic cylindrical pin (2) with described left side push rod (10), and centre is provided with left side return spring (11).
5. impulse electromagnetic valve as claimed in claim 1, is characterized in that: the right side of described valve rod (9) has right side push rod (3).
6. impulse electromagnetic valve as claimed in claim 5, is characterized in that: on described right side push rod (3), be fixed with right side top stem casing (1).
7. impulse electromagnetic valve as claimed in claim 6, is characterized in that: described right side top stem casing (1) is fixed by elastic cylindrical pin (2) with described right side push rod (3), and centre is provided with right side return spring (4).
8. impulse electromagnetic valve as claimed in claim 1, is characterized in that: described guide pin bushing (8) seals by K shape circle (6) with described valve rod (9).
9. the impulse electromagnetic valve as described in claim 1 or 8, is characterized in that: the vent place of described guide pin bushing (8) is provided with chamfering.
10. impulse electromagnetic valve as claimed in claim 1, is characterized in that: the two ends, left and right of described valve body (7) are also connected with side cover (5).
11. impulse electromagnetic valves as described in claim 1 or 8, is characterized in that: described guide pin bushing (8) is located fastening by side cover (5) and described valve body (7).
12. impulse electromagnetic valves as claimed in claim 1, is characterized in that: on described left side solenoid valve (13) and right side solenoid valve (14), air-filtering assembly (15) is all installed.
13. impulse electromagnetic valves as claimed in claim 12, is characterized in that: described air-filtering assembly (15) comprises gas port, filter element.
14. impulse electromagnetic valves as claimed in claim 1, is characterized in that: described left side solenoid valve (13) has the first valve pocket (Q1).
15. impulse electromagnetic valves as claimed in claim 1, is characterized in that: described right side solenoid valve (14) has the second valve pocket (Q2).
16. impulse electromagnetic valves as described in claim 1 or 10, is characterized in that: described valve body (7) bottom has five ventilating holes, and it is respectively A gas port (A), B gas port (B), R gas port (R), P gas port (P), S gas port (S).
17. impulse electromagnetic valves as described in claim 1 or 10, is characterized in that: in described valve body (7), have five air cavitys, it is respectively A chamber (a), B chamber (b), R chamber (r), P chamber (p), S chamber (s).
18. impulse electromagnetic valves as claimed in claim 16, is characterized in that: described P gas port (P) is communicated with P chamber (p).
19. impulse electromagnetic valves as claimed in claim 16, is characterized in that: described A gas port (A) is communicated with A chamber (a).
20. impulse electromagnetic valves as claimed in claim 16, is characterized in that: described B gas port (B) is communicated with B chamber (b).
21. impulse electromagnetic valves as claimed in claim 16, is characterized in that: described R gas port (R) is communicated with R chamber (r).
22. impulse electromagnetic valves as claimed in claim 16, is characterized in that: described S gas port (S) is communicated with S chamber (s).
23. impulse electromagnetic valves as claimed in claim 16, is characterized in that: described P gas port (P) is inlet opening.
24. impulse electromagnetic valves as claimed in claim 16, is characterized in that: described A gas port (A), B gas port (B) are delivery outlet.
25. impulse electromagnetic valves as claimed in claim 16, is characterized in that: described R gas port (R), S gas port (S) are relief opening.
26. impulse electromagnetic valves as claimed in claim 17, is characterized in that: described P chamber (p) is communicated with the first valve pocket (Q1), the second valve pocket (Q2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320546922.3U CN203532857U (en) | 2013-09-04 | 2013-09-04 | Pulse magnetic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320546922.3U CN203532857U (en) | 2013-09-04 | 2013-09-04 | Pulse magnetic valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203532857U true CN203532857U (en) | 2014-04-09 |
Family
ID=50419066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320546922.3U Expired - Fee Related CN203532857U (en) | 2013-09-04 | 2013-09-04 | Pulse magnetic valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203532857U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223837A (en) * | 2017-08-28 | 2018-06-29 | 河南航天液压气动技术有限公司 | A kind of solenoid valve |
| TWI652428B (en) | 2014-09-04 | 2019-03-01 | 日商Ｓｍｃ股份有限公司 | Dual four-port electromagnetic valve |
-
2013
- 2013-09-04 CN CN201320546922.3U patent/CN203532857U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI652428B (en) | 2014-09-04 | 2019-03-01 | 日商Ｓｍｃ股份有限公司 | Dual four-port electromagnetic valve |
| CN108223837A (en) * | 2017-08-28 | 2018-06-29 | 河南航天液压气动技术有限公司 | A kind of solenoid valve |
| CN108223837B (en) * | 2017-08-28 | 2019-11-08 | 河南航天液压气动技术有限公司 | A kind of solenoid valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203532857U (en) | Pulse magnetic valve | |
| CN100570185C (en) | The continuously adjustable solenoid valve of valve core movement | |
| CN203560560U (en) | Gas switch solenoid valve with flow having linear proportion characteristic | |
| CN203286008U (en) | Pressure balance type gas injection digital valve | |
| CN113833897B (en) | Switch electromagnetic valve for controlling gas circuit system | |
| CN202629271U (en) | Self-hold electromagnetic valve | |
| CN102563191A (en) | Control valve group for pneumatic positioner | |
| CN208651767U (en) | A kind of novel pneumatic solenoid valve | |
| CN203770781U (en) | Self-powered check valve | |
| CN110805540A (en) | Pure magnetic drive gas supercharger | |
| CN202531969U (en) | Control valve bank for pneumatic positioner | |
| CN215110538U (en) | Novel electromagnetic valve | |
| CN202217618U (en) | Permanent magnetic operating mechanism with auxiliary electromagnetic circuit | |
| CN208619824U (en) | Normal-open electromagnetic valve | |
| CN203067406U (en) | Pneumatic reversing return circuit with counting function | |
| CN211525653U (en) | Electromagnetic valve for refitted automobile | |
| CN108006302A (en) | A kind of solenoid valve based on the control of two-wire coil temperature rise | |
| CN208442326U (en) | Four double three-way magnetic valves | |
| CN201779336U (en) | Self-sustaining electromagnetic valve | |
| CN209414738U (en) | A kind of pneumatic high-frequency electromagnetic valve of cartridge multi-airway | |
| CN214699428U (en) | Infinite airflow inflation electromagnetic valve | |
| CN220792163U (en) | Three-way electromagnetic valve | |
| CN209587295U (en) | A kind of closed type high-speed switch valve | |
| CN215059744U (en) | Electromagnetic valve integrated block | |
| CN210769601U (en) | Speed reduction device and cylinder system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20140409 Termination date: 20190904 |