EP2669237A1 - Circuit de commande de freinage pour un frein actionné de manière électromagnétique et procédé sécurisé de mise hors tension d'un frein actionnable de manière électromagnétique - Google Patents

Circuit de commande de freinage pour un frein actionné de manière électromagnétique et procédé sécurisé de mise hors tension d'un frein actionnable de manière électromagnétique Download PDF

Info

Publication number
EP2669237A1
EP2669237A1 EP12004178.5A EP12004178A EP2669237A1 EP 2669237 A1 EP2669237 A1 EP 2669237A1 EP 12004178 A EP12004178 A EP 12004178A EP 2669237 A1 EP2669237 A1 EP 2669237A1
Authority
EP
European Patent Office
Prior art keywords
brake
voltage
electronic valve
electronic
driver stage
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.)
Withdrawn
Application number
EP12004178.5A
Other languages
German (de)
English (en)
Inventor
Bernd Schnauffer
Mathias Spannagel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ziehl Abegg SE
Original Assignee
Ziehl Abegg SE
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ziehl Abegg SE filed Critical Ziehl Abegg SE
Priority to EP12004178.5A priority Critical patent/EP2669237A1/fr
Publication of EP2669237A1 publication Critical patent/EP2669237A1/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/24—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration
    • B66B1/28—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical
    • B66B1/32—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical effective on braking devices, e.g. acting on electrically controlled brakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0006—Monitoring devices or performance analysers
    • B66B5/0018—Devices monitoring the operating condition of the elevator system
    • B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons

Definitions

  • the invention relates to a brake drive circuit for an electromagnetically actuated brake, in particular for a cable lift brake, with a first electronic valve, with which a connected or connectable first armature inductance of the brake between a current state and a de-energized state is switchable, and with a drive means, with the control device, a control input of the electronic valve is controlled.
  • the invention further relates to a method for safely switching off an electromagnetically actuated brake, in particular a cable lift brake, wherein when switching off the brake, a first armature inductance is switched with a first electronic valve from a powered to a de-energized state.
  • the electronic valves used in this case have the advantage over the otherwise usual contactors that the switching operations produce no noise.
  • electronic valves in elevator technology however, new ways must be found, as the safety requirements are to be realized.
  • the invention is therefore based on the object to provide a brake control circuit that is quiet during operation and with which safety requirements can be met.
  • the invention provides a brake input circuit of the type mentioned above, that a switching input for connecting a safety switch chain in particular an elevator is formed and that a monitoring device is configured to monitor a voltage at the switching input and that the driving means for switching off the first electronic valve is set below a threshold value at a detected with the monitoring device voltage drop of the voltage.
  • a safety switch chain is understood here in the elevator technology, an arrangement of switching elements, which are arranged at different points of an elevator and which are interconnected such that the opening of each of the switches of the safety switch chain causes an interruption of the safety switch chain.
  • the known safety switch can be easily connected to the brake drive circuit of the type described.
  • the advantage here is that no changes must be made to the safety switch chain to the brake control circuit described above, in which instead of the contactor a first electronic valve is formed at to use an elevator and in particular for the control of the cable lift brake of the elevator.
  • the first threshold value is lower than a supply voltage, for example so low that a voltage drop to zero can be detected and / or differentiated from fluctuations in the supply voltage.
  • the electronic valve is an insulated gate transistor and that the control input is connected to the gate electrode.
  • the electronic valve may in particular be an IGBT or a MOSFET. The advantage here is that with the first electronic valve large currents are switchable.
  • the drive means comprises a first driver stage of the first electronic valve.
  • the first driver stage can be set up to drive the mentioned gate electrode.
  • the advantage here is that a transistor with insulated gate electrode can be used as the first electronic valve.
  • Another advantage is that with the first driver stage an additional safety-related shutdown of the first electronic valve can be realized.
  • the first driver stage receives a supply voltage via the switching input.
  • the advantage here is that in an interruption of the safety switch chain not only active shutdown of the first electronic valve via the control device is effected, but that in addition the supply voltage for the first driver stage is turned off.
  • the first electronic valve is switched off when the safety switch chain is interrupted. Because the shutdown of the supply voltage of the first driver stage causes in any case that the first electronic valve is placed in a non-conductive state.
  • the control device has a microcontroller which is set up to control the first driver stage and is supplied independently of the switching state of the safety switch chain.
  • the advantage here is that the microcontroller of the drive device is still powered, even if the safety switch chain is interrupted.
  • the active shutdown of the first electronic valve at a voltage drop across the safety switch chain can therefore be done by the microcontroller regardless of a shutdown of the supply voltage for the first driver stage. There are thus formed two shutdown paths, whereby the achievable security level of the brake drive circuit is increased.
  • an electronic switch is formed, with which a low-impedance freewheeling path of the connected or connectable armature inductance can be separated.
  • the brakes in the elevator technology have an integrated freewheeling path for the respective armature inductance, with which the stored energy of the armature inductance can be rapidly degraded after a shutdown. This is to ensure that the brake is applied quickly.
  • the brake drive circuit has the advantageous embodiment
  • an additional freewheeling path which may be connected in parallel to the integrated freewheeling path of the brake and which may be formed low impedance compared to the integrated freewheeling path of the brake.
  • the connected or connectable armature inductance is essentially short-circuitable via the low-resistance freewheeling path.
  • This has the consequence that the stored energy of the armature inductance is reduced comparatively slowly.
  • this additional low-impedance freewheeling path can be separated, which can be determined with the electronic switch, whether the stored energy of the armature inductance is to be reduced rapidly, for example via an integrated freewheeling path, or slowly via the low-resistance freewheeling path.
  • the control device for disconnecting the electronic switch is set below a threshold value during a voltage drop of the voltage detected by the monitoring device.
  • control device comprises a driver stage of the electronic switch, which receives a supply voltage from the switching input.
  • the advantage here is that a shutdown or a separation of the electronic switch can be effected even if the control device fails when the safety switch chain is open and the electronic switch controls incorrectly.
  • the connected or connectable first armature inductance can be switched to the non-energized state with the electronic switch.
  • the advantage here is that an additional switch-off possibility of the connected or connectable first armature inductance can be realized.
  • a connected or connectable second armature inductance of the brake with the control device can be switched to a non-energized state via a second electronic valve when the voltage drop of the voltage below the threshold value is detected with the monitoring device.
  • the advantage here is that a second brake shoe of the brake can be controlled in order to achieve a collapse of the brake when opening the safety switch chain. This again increases the safety level of the brake drive circuit.
  • the drive means comprises a second driver stage of the second electronic valve, wherein the second driver stage receives a supply voltage from the switching input.
  • the connected or connectable second armature inductance can be switched to a de-energized state with the electronic switch.
  • the advantage here is that with the electronic switch two or both Ankerinduktterrorismen a connectable or connected brake can be switched off. In this case, it is particularly advantageous if a driver stage of the electronic switch obtains a supply voltage from the switching input.
  • a voltage applied across a safety switch chain voltage is monitored and that the first armature inductance is switched to the electronic valve in the de-energized state, when the voltage drops below a predetermined threshold or has fallen off.
  • the advantage here is that the safety-related information from the safety switch chain for use in electronic valves is provided.
  • electronic valves instead of hitherto conventional contactors for the control of brakes, which must meet safety requirements, usable.
  • a method for safe shutdown of an electromagnetically actuated brake in the elevator technology can be provided.
  • the advantage here is that electronic valves can be used, which have a low noise when switching.
  • a control input of the first electronic valve is driven with a first driver stage and that the first driver stage is supplied from the applied voltage across the safety switch chain.
  • the first driver stage is driven by a microcontroller and that the microcontroller is powered independently of a switching state of the safety chain.
  • the advantage here is that the microcontroller can trigger a shutdown of the first electronic valve even after switching off the safety switch chain at a detected voltage drop.
  • a low-impedance freewheeling path with which a stored in the first armature inductance energy is degraded is separated when the voltage applied across the safety chain voltage drops below the threshold or has dropped.
  • the advantage here is that a slower degradation of the stored energy Ankerinduktterrorism be prevented and thus a faster reduction of energy can be forced when the safety switch chain opens.
  • the internal resistance of the low-resistance freewheeling path can in this case be chosen to be significantly smaller than the internal resistance of a high-impedance freewheeling path integrated in the brake.
  • a driver stage of the electronic switch is supplied from the applied voltage across the safety switch chain.
  • the first armature inductance with the electronic Switch is switched to the de-energized state.
  • the advantage here is that with the electronic switch an additional switch-off possibility of the first armature inductance is provided. With the electronic switch thus a dual function can be realized. On the one hand, a rapid collapse of the connected brake can be forced and, on the other hand, the first armature inductance can be switched off independently of the functionality of the first electronic valve.
  • a second armature inductance of the brake is switched to a non-energized state when the voltage drop of the voltage below the threshold value detected by the monitoring device is applied via a second electronic valve.
  • the second armature inductance is switched to the electronic switch in a de-energized state when the voltage applied across the safety chain voltage drops below the threshold or has dropped.
  • the electronic Switch a rapid collapse of the first armature inductance and - with appropriate formation of a corresponding second low-resistance freewheeling path for the second armature inductance - force a rapid collapse of a second brake shoe of the brake, secondly, the electronic switch switches off the first armature inductance independent of the first electronic valve and third, the electronic switch shuts off the second armature inductance independently of the second electronic valve.
  • a large redundancy for switching off the armature inductances is formed.
  • Fig. 1 shows in a highly simplified manner a designated as a whole with 1 inventive brake drive circuit.
  • details of the wiring are omitted for simplicity, which are not immediately necessary to explain the method according to the invention.
  • Details of the electrical and electronic circuitry of the illustrated elements are carried out in a manner known per se.
  • a brake 2 can be activated with the brake drive circuit 1, which is connected to the brake drive circuit 1 for operation.
  • the brake 2 is in Fig. 1 indicated only with their necessary to explain the process of the invention components.
  • the brake 2 can be designed, for example, as an elevator brake, in particular as a cable lift brake.
  • the brake drive circuit 2 has a first electronic valve 3 (S5), with which a first armature inductance 4 of the brake 2 can be switched off, that is to say switchable between an energized state and a non-energized state.
  • the first armature inductor 4 is energized from a rectifier bridge 5 of the brake drive circuit 1.
  • the rectifier bridge 5 is fed from a network 6.
  • the brake drive circuit 1 has a driver 7 (N2). With the control device 7, a control input 8 of the first electronic valve 3 can be controlled in a conventional manner. The control device 7 is thus set up to switch off the first armature inductance 4 by means of the first electronic valve 3.
  • the brake control device 1 has a switching input 9, to which a safety switch chain 10 known per se from elevator technology can be connected and connected during operation of the brake drive circuit 1.
  • the safety switch chain 10 is also fed from the network 6.
  • a monitoring device 12 (N1) is connected via a transformer 11 (U1).
  • the voltage at the switching input 9 can be monitored.
  • the voltage at the switching input 9 drops below a predetermined threshold value.
  • the monitoring device 12 detects a voltage drop of this voltage.
  • the monitoring device 12 is in control connection with the control device 7. This control connection is set up such that, when the voltage at the switching input 9 detects a voltage drop, the control device 7 is triggered to switch off the first electronic valve 3.
  • opening the safety switch chain 10 causes the energization of the first armature inductor 4 is interrupted.
  • the first electronic valve 3 is formed in the described embodiment as an IGBT or MOSFET, and the control input 8 is the gate electrode of the first electronic valve.
  • the drive device 7 comprises a first driver stage 14 of the first electronic valve 3.
  • This first driver stage 14 is in Fig. 1 indicated only very schematically and in in a manner known per se, in order to provide a voltage which defines a switching state of the first electronic valve 3 at the control input 8.
  • the first driver stage 14 receives a supply voltage.
  • the brake drive circuit 1 is set up such that the first driver stage 14 obtains this supply voltage via the transformer 11 from the switching input 9.
  • the supply voltage for the first driver stage 14 also breaks down. Thus, it is forced that the first electronic valve 3, regardless of control commands of the driving device 7 goes to the open position. Thus, the energization of the first armature inductance is interrupted.
  • control device 7 To generate the control commands for the first electronic valve 3, the control device 7 additionally has a microcontroller 15.
  • the microcontroller 15 is set up in a manner known per se for generating the control commands of the first driver stage 14 and thus of the first electronic valve 3.
  • the microcontroller 15 is supplied directly from the network 6 via a voltage supply unit 16 (U2).
  • the supply of the microcontroller 15 is thus independent of the switching state of the safety switch chain 10th
  • the microcontroller 15 also works after switching off the safety switch chain 10 to the drive of the first electronic valve 3 according to the specifications of the monitoring device 12 execute.
  • the brake drive circuit 1 further has an electronic switch 17 (S2), with which a first low-impedance freewheeling path 18 for the first armature inductance 4 can be separated. Also, the electronic switch 17 is formed as an IBGT or as a MOSFET.
  • the first low-resistance free-wheeling path 18 has a low resistance compared to a first integrated free-wheeling path 19 of the brake 2.
  • the first brake shoe 13 of the brake 2 therefore falls relatively quickly, but relatively slowly when the electronic switch 17 is closed.
  • the control device 7 has a driver stage 21 of the electronic switch 17, with which a control input 22 of the electronic switch 17 can be controlled.
  • the driver stage 21 is also via the transformer 11 from the switching input 9 and thus from the above the safety switch chain 10 applied voltage supplied.
  • the electronic switch 17 is arranged in the brake drive circuit 1 between the rectifier bridge 5 and the connection points 23 in such a way that with the electronic switch 17, the first armature inductance 4 can be switched to the non-energized state.
  • the control device 7 is set up such that when the switch 12 is de-energized by the monitoring device 12, ie when the voltage at the switch input 9 has fallen below a predetermined threshold, the electronic switch 17 is actively cut.
  • the first armature inductor 4 is placed in the de-energized state independently of the first electronic valve 3.
  • the brake drive circuit 1 additionally has connection points 24, to which a second armature inductance 25 of the brake 2 can be connected and connected for operation.
  • the second armature inductor 25 is connected to a second electronic valve 26 (S4) between a non-energized state and a powered state.
  • the second electronic valve 26 is designed as an IGBT or as a MOSFET.
  • a second brake shoe 27 is the Brake 2 collapsed, in the energized state, this second brake shoe 27 is released.
  • the second electronic valve 26 has a control input 28, which is in control connection with the control device 7.
  • the control device 7 is set up so that the second electronic valve 26 is switched off via the control input 28 when the monitoring device 12 detects and signals a voltage drop at the switching input 9 below a predetermined threshold value.
  • the driving device 7 has a second driver stage 29 for the control input 28 of the second electronic valve 26.
  • This second driver stage 29 is also supplied from the voltage at the switching input 9.
  • opening the safety switch chain 10 causes the second electronic valve 26 to be switched off independently of the microcontroller 15 of the control device 7.
  • microcontroller 15 causes a control of the second driver stage 29, which has an opening of the electronic valve 26 by appropriate voltage supply to the control input 28 result.
  • the second electronic valve 26 is therefore switched off when opening the safety switch chain 10 via two paths: firstly via the microcontroller 15, which controls the second driver stage 29 accordingly, and on the other via a shutdown of the supply voltage for this second driver stage 29.
  • a second low-resistance free-wheeling path 30 is formed, with which the stored energy of the second armature inductor 25 is relatively slowly degradable, as long as the electronic switch 17 is closed.
  • a second integrated freewheeling path 31 of the brake 2 provides for a rapid energy reduction of the stored energy of the armature inductance 25 via a varistor 32 (R2) as soon as the electronic switch 17 is opened.
  • the integrated freewheeling path 3 is thus formed high impedance.
  • a diode 33 (D1) is arranged, and in the second low-resistance free-wheeling path 30, a diode 34 (D2) is arranged.
  • the second armature inductance 25 can be converted into the de-energized state.
  • the drive device 7 has a first enable input 35 and a second enable input 36.
  • a release of the first brake shoe 13 can thus be released via an enable signal at the release input 35, while releasing the second brake shoe 27 with a release signal at the release input 36 can be released.
  • the brake drive circuit 1 finally has a switching relay 37 (S1) with which the rectifier bridge 5 can be disconnected from the mains.
  • the switching relay 37 can by the driving device 7th additionally be controlled in order to switch off the supply of the armature inductances 4, 25 and thus to force a collapse of the brake 2.
  • This disconnection of the switching relay 37 can be triggered by the monitoring device 12 at a voltage drop at the switching input 9.
  • the voltage applied across the safety switch chain 10 voltage is monitored with the monitoring device 12 and the first electronic valve 3, the second electronic valve 26 and the electronic switch 17 and possibly the switching relay 37 is turned off when the on the Switch input 9 voltage drops below a predetermined threshold.
  • the brake drive circuit 1 is arranged in a housing 38.
  • connection points 23, 24, the release inputs 35, 36, the switching input 9 and / or the network connection points 39 is / are in this case designed as connection terminals on the housing 38.
  • the brake control circuit 1 is therefore designed as a compact brake module, to which the brake 2, the network 6, the safety switch chain 10 and optionally other elements for operation can be connected.
  • the brake drive circuit 1 for safe shutdown of an electromagnetically actuated brake 2 at which the shutdown by switching a first armature inductance 4 of the brake 2 in a de-energized state with a first electronic valve 3 is effected, it is proposed to set up a monitoring device 12 for monitoring a voltage applied to a switching input 9 for a safety switch chain 10 voltage and a driving device 7 for Switching off the first electronic valve 3 set up when a voltage drop of the voltage at the switching input 9 is detected below a predetermined threshold.

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Elevator Control (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
EP12004178.5A 2012-05-31 2012-05-31 Circuit de commande de freinage pour un frein actionné de manière électromagnétique et procédé sécurisé de mise hors tension d'un frein actionnable de manière électromagnétique Withdrawn EP2669237A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12004178.5A EP2669237A1 (fr) 2012-05-31 2012-05-31 Circuit de commande de freinage pour un frein actionné de manière électromagnétique et procédé sécurisé de mise hors tension d'un frein actionnable de manière électromagnétique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12004178.5A EP2669237A1 (fr) 2012-05-31 2012-05-31 Circuit de commande de freinage pour un frein actionné de manière électromagnétique et procédé sécurisé de mise hors tension d'un frein actionnable de manière électromagnétique

Publications (1)

Publication Number Publication Date
EP2669237A1 true EP2669237A1 (fr) 2013-12-04

Family

ID=46319503

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12004178.5A Withdrawn EP2669237A1 (fr) 2012-05-31 2012-05-31 Circuit de commande de freinage pour un frein actionné de manière électromagnétique et procédé sécurisé de mise hors tension d'un frein actionnable de manière électromagnétique

Country Status (1)

Country Link
EP (1) EP2669237A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015204400A1 (de) * 2014-12-09 2016-06-09 Thyssenkrupp Ag Ansteuereinrichtung für Bremsen

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5153389A (en) 1989-09-28 1992-10-06 Mitsubishi Denki Kabushiki Kaisha Two stage electromagnetic braking device for an elevator
US20110278099A1 (en) * 2009-03-05 2011-11-17 Ari Kattainen Elevator system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5153389A (en) 1989-09-28 1992-10-06 Mitsubishi Denki Kabushiki Kaisha Two stage electromagnetic braking device for an elevator
US20110278099A1 (en) * 2009-03-05 2011-11-17 Ari Kattainen Elevator system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015204400A1 (de) * 2014-12-09 2016-06-09 Thyssenkrupp Ag Ansteuereinrichtung für Bremsen

Similar Documents

Publication Publication Date Title
EP2845072B1 (fr) Appareil de commutation
DE102015005198B4 (de) Bremsantriebssteuervorrichtung mit Regelwidrigkeitsdetektion
DE102014204287A1 (de) Verfahren zum Betreiben einer Kraftfahrzeugbremseinrichtung sowie Steuergerät für eine Kraftfahrzeugbremseinrichtung
EP2208215B1 (fr) Dispositif de commutation et procédé de contrôle d'un relais électromagnétique
EP3513438B1 (fr) Module solaire et centrale de production d'énergie
DE102016216331B3 (de) Trennvorrichtung zur Stromunterbrechung, Schutzschalter mit einem Sensor und einer Trennvorrichtung sowie Verfahren zum Betrieb einer Trennvorrichtung
EP2826052A1 (fr) Circuit à relais de sécurité
EP2638438B1 (fr) Circuiterie équipée d'un interrupteur d'arrêt d'urgence d'un engin de levage
EP2607200B1 (fr) Agencement comprenant deux composants de véhicule, notamment une colonne de direction et un volant, et véhicule automobile doté d'un agencement
EP2412656A1 (fr) Dispositif de commande dýascenseur
DE102011002685B3 (de) Vorrichtung und Verfahren zum Steuern eines Schalterantrieb eines elektrischen Schalters
EP2669237A1 (fr) Circuit de commande de freinage pour un frein actionné de manière électromagnétique et procédé sécurisé de mise hors tension d'un frein actionnable de manière électromagnétique
DE102012102220A1 (de) Sicherheitsschaltung und Sicherheitsschaltgerät mit einer Sicherheitsschaltung
EP2215533B1 (fr) Dispositif de commande pour un système de commutation de sécurité à surveillance intégrée de la tension d'alimentation
EP2669233A1 (fr) Circuit de commande de freinage pour un frein actionné de manière électromagnétique et module d'entraînement
EP1758766B1 (fr) Dispositif d'alimentation en tension d'un appareil de commande
WO2017089549A1 (fr) Appareil de commutation et système de mise en circuit et hors circuit d'une charge électrique
DE102016010777B4 (de) Antrieb mit Sicherheitsschaltvorrichtung, System und Verfahren
DE102007045344A1 (de) Steuergerät zum Betrieb elektrischer Verbraucher eines Fahrzeugs
WO2007085372A1 (fr) Dispositif de commutation de sécurité et procédé d'arrêt sécurisé d'un récepteur électrique
DE102005043743B4 (de) Vorrichtung und Verfahren zur Freigabe und/oder Sperrung der Versorgung eines Elektromotors mit elektrischer Energie
DE10220349B4 (de) Verfahren und Vorrichtung zum Verbinden einer Versorgungsgleichspannung mit einer Last und zum Trennen der Versorgungsgleichspannung von der Last
EP2053624B1 (fr) Commutateur préfabriqué pour la commutation sécurisée et non sécurisée de sorties
DE102014208709A1 (de) Sicherheitseinrichtung
EP3268972A2 (fr) Coupure rapide, par un nombre réduit de composants, d'un contacteur à réglage électronique

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20140605