DK2484900T3 - Fremgangsmåde til smøring af mindst et vingepitchleje af en vindmølle - Google Patents
Fremgangsmåde til smøring af mindst et vingepitchleje af en vindmølle Download PDFInfo
- Publication number
- DK2484900T3 DK2484900T3 DK11153696.7T DK11153696T DK2484900T3 DK 2484900 T3 DK2484900 T3 DK 2484900T3 DK 11153696 T DK11153696 T DK 11153696T DK 2484900 T3 DK2484900 T3 DK 2484900T3
- Authority
- DK
- Denmark
- Prior art keywords
- lubrication
- pitch
- rotor
- blade
- rotor blade
- Prior art date
Links
- 230000001050 lubricating effect Effects 0.000 title claims description 50
- 238000000034 method Methods 0.000 title claims description 27
- 238000005461 lubrication Methods 0.000 claims description 117
- 239000000314 lubricant Substances 0.000 claims description 29
- 238000001514 detection method Methods 0.000 claims description 26
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000010720 hydraulic oil Substances 0.000 claims description 3
- 230000006870 function Effects 0.000 claims 8
- 235000014121 butter Nutrition 0.000 claims 1
- 238000005259 measurement Methods 0.000 description 10
- 239000002245 particle Substances 0.000 description 7
- 238000005096 rolling process Methods 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/70—Bearing or lubricating arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/022—Adjusting aerodynamic properties of the blades
- F03D7/0224—Adjusting blade pitch
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/52—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
- F16C33/6659—Details of supply of the liquid to the bearing, e.g. passages or nozzles
- F16C33/6674—Details of supply of the liquid to the bearing, e.g. passages or nozzles related to the amount supplied, e.g. gaps to restrict flow of the liquid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
- F16C41/008—Identification means, e.g. markings, RFID-tags; Data transfer means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/80—Diagnostics
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/98—Lubrication
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2233/00—Monitoring condition, e.g. temperature, load, vibration
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2360/00—Engines or pumps
- F16C2360/31—Wind motors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Claims (12)
1. Fremgangsmåde til smøring af mindst et vingepitchleje af en vindmølle, især en vindmølle med variabel-pitch, hvor vindmøllen omfatter et rotornav, der har et antal af rotorvinger, hvor hver rotorvinge er understøttet på rotornavet ved mindst et vingepitchleje, hvor mindst en rotorvinge kan pitches, og en rotorvingepitchstyreindretning, som er tilpasset til at styre pitching af den mindst ene rotorvinge, kendetegnet ved, at - smøringstilstanden af mindst et vingepitchleje bestemmes ved hjælp af en smøringsdetekteringsindretning, som genererer mindst et smøringsinformationssignal, der indikerer en smøringsgrad af det mindst ene vingepitchleje ved måling af den elektriske kapacitet og/eller modstand af det mindst ene vingepitchleje, og - en rotorvingesmøreindretning aktiveres for at udføre mindst en funktion for at smøre det mindst ene vingepitchleje, hvis smøringsinformationssignalet indikerer, at det mindst ene vingepitchleje ikke er tilstrækkeligt smurt, hvor smøringsinformationssignalet og/eller smøreparametrene vedr. mindst en tidligere drift af rotorvingesmøreindretningen er lagret i en hukommelsesenhed, hvor rotorvingesmøreindretningen i det mindste delvist tager hensyn til de data lagret i hukommelsesenheden til udførelse af den mindst ene funktion for at smøre det mindst ene vingepitchleje.
2. Fremgangsmåde ifølge krav 1, hvor bestemmelse af smøringstilstanden af det mindst ene vingepitchleje foretages ved bestemmelse af mængden af smøremiddel, især coatingtykkelsen af smøremidlet, mellem mindst to komponenter af det mindst ene vingepitchleje, hvilke komponenter bevæger sig i forhold til hinanden.
3. Fremgangsmåde ifølge krav 1 eller 2, hvor smøringsinformationssignalet behandles på en sådan måde, at det indikerer slitagegraden af det mindst ene vingepitchleje.
4. Fremgangsmåde ifølge et af de foregående krav, hvor rotorvingesmøreindretningen sprøjter yderligere smøremiddel ind i det mindst ene vingepitchleje og/eller aktiverer rotorvingepitchstyreindretningen for at ændre pitchvinklen af den mindst ene rotorvinge for at smøre det mindst ene vingepitchleje.
5. Fremgangsmåde ifølge et af de foregående krav, hvor rotorvingesmøreind-retningen tager hensyn til mindst en intern parameter og/eller mindst en ekstern parameter til udførelse af den mindst ene funktion for at smøre det mindst ene vingepitchleje.
6. Fremgangsmåde ifølge krav 5, hvor en temperatur og/eller et tryk af en hydraulikolie og/eller hastigheden af rotornavet og/eller hastigheden af rotoren af strømgenereringsenheden og/eller pitchvinkler og/eller genereret strøm af en strømgenereringsenhed af vindmøllen betragtes som en intern parameter, og vindhastighed og/eller omgivelsestemperatur og omgivelsestryk og/eller lufttæthed betragtes som en ekstern parameter.
7. Fremgangsmåde ifølge et af de foregående krav, hvor smøringsdetekteringsindretningen genererer mindst et advarselssignal, hvis det mindst ene smøringsinformationssignal indikerer, at smøringen af det mindst ene vingepitchleje ikke er tilstrækkelig, især når rotorvingesmøreindretningen allerede har udført mindst en funktion for at smøre det mindst ene vingepitchleje.
8. Fremgangsmåde ifølge et af de foregående krav, hvor smøringsdetekteringsindretningen genererer et stopsignal for at stoppe driften af vindmøllen, hvis det mindst ene smøringsinformationssignal indikerer, at smøringen af det mindst ene vingepitchleje ikke er tilstrækkelig, især når rotorvingesmøreindretningen allerede har udført mindst en funktion for at smøre det mindst ene vingepitchleje.
9. Vindmølle (1), især en vindmølle med variabel-pitch, tilpasset til at gennemføre fremgangsmåden ifølge et af de foregående krav, hvor vindmøllen (1) har et rotornav (2), der omfatter et antal af rotorvinger (4), hvor mindst en rotorvinge (4) er understøttet på rotornavet (2) ved mindst et vingepitchleje (5), og mindst en rotorvinge (4), som kan pitches rundt om en rotorvingemid-terakse, og en rotorvingepitchstyreindretning (6), der er tilpasset til at styre den respektive pitchvinkel af den mindst ene rotorvinge (4), og en smøringsdetekteringsindretning (7), som er tilpasset til at generere mindst et smøringsinformationssignal, der indikerer smøringsgraden af det mindst ene vin- gepitchleje (5) ved måling af den elektriske kapacitet og/eller modstand af det mindst ene vingepitchleje (5), hvor smøringsdetekteringsindretningen (7) er tilpasset til at aktivere rotorvingesmøreindretningen (8), som er tilpasset til at udføre mindst en funktion for at smøre det mindst ene vingepitchleje (5), når smøringsinformationssignalet indikerer, at det mindst ene vingepitchleje (5) ikke er tilstrækkeligt smurt, hvor rotorvingesmøreindretningen (8) og rotorvin-gepitchstyreindretningen (6) er tilpasset til at kommunikere med hinanden, hvor vindmøllen omfatter en hukommelsesenhed (10), der er tilpasset til at lagre smøringsinformationer og/eller driftsdata vedr. mindst en tidligere drift af rotorvingesmøreindretningen (8), hvor rotorvingesmøreindretningen (8) og hukommelsesenheden (10) er tilpasset til at kommunikere med hinanden.
10. Vindmølle ifølge krav 9, hvor rotorvingesmøreindretningen (8) er tilpasset til at sprøjte yderligere smøremiddel ind i det mindst ene vingepitchleje (5) og/eller aktivere rotorvingepitchstyreindretningen (6) for at ændre pitchvink-len af mindst en rotorvinge (4) for at smøre det mindst ene vingepitchleje (5).
11. Vindmølle ifølge krav 9 eller 10, hvor smøringsdetekteringsindretningen (7) er tilpasset til at generere mindst et advarselssignal, hvis det mindst ene smøringsinformationssignal indikerer, at smøringen af det mindst ene vingepitchleje (5) ikke er tilstrækkelig, især hvor rotorvingesmøreindretningen (8) allerede har udført mindst en funktion for at smøre det mindst ene vingepitchleje (5).
12. Vindmølle ifølge et af kravene 9 til 11, hvor smøringsdetekteringsindretningen (7) er tilpasset til at generere et stopsignal for at stoppe driften af vindmøllen (1), hvis det mindst ene smøringsinformationssignal indikerer, at smøringen af det mindst ene vingepitchleje (5) ikke er tilstrækkelig, især når rotorvingesmøreindretningen (8) allerede har udført mindst en funktion for at smøre det mindst ene vingepitchleje (5).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP11153696.7A EP2484900B1 (en) | 2011-02-08 | 2011-02-08 | Method for lubricating at least one blade pitch bearing of a wind turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DK2484900T3 true DK2484900T3 (da) | 2017-05-22 |
Family
ID=44224084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK11153696.7T DK2484900T3 (da) | 2011-02-08 | 2011-02-08 | Fremgangsmåde til smøring af mindst et vingepitchleje af en vindmølle |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US9133827B2 (da) |
| EP (1) | EP2484900B1 (da) |
| JP (1) | JP2012163101A (da) |
| KR (1) | KR20120090865A (da) |
| CN (1) | CN102635513A (da) |
| BR (1) | BR102012002796A2 (da) |
| CA (1) | CA2767022A1 (da) |
| DK (1) | DK2484900T3 (da) |
| NZ (1) | NZ597952A (da) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10089443B2 (en) | 2012-05-15 | 2018-10-02 | Baxter International Inc. | Home medical device systems and methods for therapy prescription and tracking, servicing and inventory |
| EP2708741B1 (en) * | 2012-09-12 | 2015-04-15 | Siemens Aktiengesellschaft | Method and arrangement to monitor a bearing of a wind turbine |
| CN103423087B (zh) * | 2013-08-28 | 2015-12-02 | 南车株洲电力机车研究所有限公司 | 一种兆瓦级风电机组变桨自动润滑系统的控制方法 |
| CN105508145A (zh) * | 2015-12-16 | 2016-04-20 | 太原重工股份有限公司 | 风电机组用试验装置 |
| US11002250B2 (en) | 2016-02-12 | 2021-05-11 | Vestas Wind Systems A/S | Controlling bearing wear |
| CN106015903B (zh) * | 2016-06-22 | 2018-07-03 | 沈阳华创风能有限公司 | 一种自动润滑注油控制方法及系统 |
| KR101824580B1 (ko) * | 2016-08-26 | 2018-02-01 | 하이윈 테크놀로지스 코포레이션 | 선형 이동 시스템의 윤활 작동 검출 방법 |
| EP3301297A1 (en) * | 2016-09-30 | 2018-04-04 | Siemens Aktiengesellschaft | Damage detection of a rotor blade of a wind turbine |
| WO2018128062A1 (ja) * | 2017-01-06 | 2018-07-12 | 日本精工株式会社 | 転動装置の診断方法 |
| DE102017212666B4 (de) * | 2017-07-24 | 2023-03-02 | Vdeh-Betriebsforschungsinstitut Gmbh | Verfahren und Vorrichtung zur Bestimmung des Zustands eines mechanischen Bauteils |
| US10837952B2 (en) * | 2017-12-18 | 2020-11-17 | Aktiebolaget Skf | Method and apparatus for detecting a bearing lubrication failure |
| CN108457818A (zh) * | 2018-02-28 | 2018-08-28 | 深圳市沃尔核材股份有限公司 | 一种风力发电机加润滑脂方法 |
| CN108869205B (zh) * | 2018-05-28 | 2020-05-26 | 国电联合动力技术有限公司 | 一种风电机组发电机轴承自动润滑智能控制系统及方法 |
| CN109185080B (zh) * | 2018-07-27 | 2019-11-22 | 北京金风科创风电设备有限公司 | 偏航加脂方法和装置、计算机可读存储介质 |
| DE102018131181B3 (de) * | 2018-12-06 | 2020-02-06 | Carl Freudenberg Kg | Lageranordnung |
| CN109899668A (zh) * | 2019-04-01 | 2019-06-18 | 国电联合动力技术有限公司 | 风电机组主轴轴承的润滑补偿方法及系统 |
| EP3828407A1 (en) * | 2019-11-28 | 2021-06-02 | Siemens Gamesa Renewable Energy A/S | Wind turbine and method |
| CN111765054A (zh) * | 2020-07-10 | 2020-10-13 | 三一重能有限公司 | 一种风电机组变桨轴承自动润滑方法和控制器 |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4345203A (en) * | 1980-06-25 | 1982-08-17 | Skf Industrial Trading & Development Company, B.V. | Device for measuring the lubrication of surfaces rolling or sliding relative to each other and lubricated with a lubricant |
| SE447010B (sv) * | 1984-05-07 | 1986-10-20 | Scaniainventor Ab | Sett och anordning for smorjfilmsovervakning i ett rullningslager |
| US5001435A (en) * | 1987-04-27 | 1991-03-19 | Honeywell Inc. | Lubrication film thickness measuring system and method |
| US6546785B1 (en) * | 1998-04-02 | 2003-04-15 | Rockwell Automation Technologies, Inc. | System and method for dynamic lubrication adjustment for a lubrication analysis system |
| GB9912112D0 (en) * | 1999-05-25 | 1999-07-28 | Rolls Royce Plc | Monitoring of bearing performance |
| JP2003156038A (ja) * | 2001-11-26 | 2003-05-30 | Nsk Ltd | 転がり軸受の運転状態監視装置 |
| NL1024450C2 (nl) * | 2003-10-03 | 2005-04-05 | Skf Ab | Werkwijze en inrichting voor het meten van de dikte van een smeerlaag tussen oppervlakken. |
| US7814787B2 (en) * | 2006-09-20 | 2010-10-19 | Itt Manufacturing Enterprises, Inc. | Combined oil level or condition sensor and sight oil level gage |
| EP2100037B1 (en) * | 2006-11-28 | 2014-04-16 | Alstom Renovables España, S.L. | A method for dynamically lubricating a wind turbine pitch blade bearing |
| US7811057B2 (en) * | 2007-01-03 | 2010-10-12 | General Electric Company | Methods and apparatus to facilitate lubrication of components |
| US20100119370A1 (en) * | 2009-11-17 | 2010-05-13 | Modi Vivendi As | Intelligent and optimized wind turbine system for harsh environmental conditions |
| US8043054B2 (en) * | 2010-08-25 | 2011-10-25 | General Electric Company | Method and system for monitoring wind turbine |
-
2011
- 2011-02-08 DK DK11153696.7T patent/DK2484900T3/da active
- 2011-02-08 EP EP11153696.7A patent/EP2484900B1/en not_active Not-in-force
-
2012
- 2012-02-01 NZ NZ59795212A patent/NZ597952A/xx not_active IP Right Cessation
- 2012-02-02 US US13/364,433 patent/US9133827B2/en not_active Expired - Fee Related
- 2012-02-06 CA CA 2767022 patent/CA2767022A1/en not_active Abandoned
- 2012-02-07 JP JP2012024085A patent/JP2012163101A/ja active Pending
- 2012-02-07 BR BRBR102012002796-8A patent/BR102012002796A2/pt not_active IP Right Cessation
- 2012-02-08 CN CN2012100271428A patent/CN102635513A/zh active Pending
- 2012-02-08 KR KR20120012911A patent/KR20120090865A/ko not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| BR102012002796A2 (pt) | 2013-10-29 |
| CA2767022A1 (en) | 2012-08-08 |
| KR20120090865A (ko) | 2012-08-17 |
| JP2012163101A (ja) | 2012-08-30 |
| CN102635513A (zh) | 2012-08-15 |
| US9133827B2 (en) | 2015-09-15 |
| NZ597952A (en) | 2012-12-21 |
| EP2484900A1 (en) | 2012-08-08 |
| EP2484900B1 (en) | 2017-03-29 |
| US20130034439A1 (en) | 2013-02-07 |
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