EP2842143B1 - Steuerung von feder(n) für einen hoch- oder mittelspannungsschutzschalter mit einer klinken-freilaufkopplungsvorrichtung - Google Patents

Steuerung von feder(n) für einen hoch- oder mittelspannungsschutzschalter mit einer klinken-freilaufkopplungsvorrichtung Download PDF

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Publication number
EP2842143B1
EP2842143B1 EP13717788.7A EP13717788A EP2842143B1 EP 2842143 B1 EP2842143 B1 EP 2842143B1 EP 13717788 A EP13717788 A EP 13717788A EP 2842143 B1 EP2842143 B1 EP 2842143B1
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EP
European Patent Office
Prior art keywords
spring
rotation
toothed wheel
arm
wheel
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Active
Application number
EP13717788.7A
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English (en)
French (fr)
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EP2842143A1 (de
Inventor
Peter Von Allmen
Roger BOITEUX
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GE Vernova GmbH
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General Electric Technology GmbH
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Publication of EP2842143A1 publication Critical patent/EP2842143A1/de
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H3/3005—Charging means
    • H01H3/3021—Charging means using unidirectional coupling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H2003/3084—Kinetic energy of moving parts recuperated by transformation into potential energy in closing or opening spring to be used in next operation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2235/00—Springs
    • H01H2235/016—Preloading
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/1987—Rotary bodies
    • Y10T74/19874—Mutilated

Definitions

  • the invention also relates to an actuator also referred to as a spring energy storage type control (s), commonly referred to as a spring drive (s), a switch comprising a freewheel coupling device.
  • a spring energy storage type control commonly referred to as a spring drive (s)
  • a switch comprising a freewheel coupling device.
  • freewheel coupling devices in particular those with ratchets which consist, in general, of a ratchet wheel provided with teeth inclined so that in one direction said teeth raise at least a pawl mounted on a driven member which can thus continue to rotate freely, while in the other direction the wheel is immobilized against the (s) pawl (s) and is thus coupled in rotation with the driven member.
  • the patent application DE3320242 which discloses such a ratchet freewheel coupling device for a timer.
  • the ratchet wheel 3 drives in a direction G a ring 1 arranged coaxially around the wheel and in the other direction V the ratchet wheel 3 does not drive the ring 1, c that is to say that it works in freewheel.
  • the ratchet wheel 3 comprises a central portion to which three identical flexible arms 4, 5, 6 are connected by being symmetrically arranged around. Each end of arms 4, 5, 6 is provided with a finger 7, 8, 9 in the form of an asymmetrical pointed tooth 13, 14 with respect to the radius of the wheel 3.
  • a pawl is thus formed both by an arm 4 , 5, 6 and its corresponding finger 7, 8, 9.
  • the dissymmetry of each finger 13, 14 in the form of a pointed tooth is such that one of its flanks 13 is parallel to an edge 2 'of each tooth 2 of the outer ring 1, whereas the other side 14 is inclined by an angle with respect to the edge 2 "of each tooth 2 of the ring 1.
  • spring type (s) controls of high voltage electrical switches such as circuit breakers, which include a freewheel coupling device.
  • the spring-type high or medium voltage switch typically include a hand crank or motor that can be used to charge, via a gear train, an opening or spring spring. closure whose release allows to bring or remove at least one moving contact to the other contact, and thus to open or close the switch.
  • the spring is arranged in the control, so that the release of the elastic energy that it has stored causes the opening or closing of the contacts of the switch.
  • the freewheel coupling device is thus provided for coupling a drive wheel of the gear train and the crank or motor so that the wheel reaches the speed of rotation of the engine or crank.
  • the crank or motor drives the drive wheel to the top dead center of the spring.
  • the spring drives the drive element further downstream at a much greater speed than that obtained by the motor drive or crank .
  • the crank or the motor is uncoupled from the gear train via the freewheel coupling device, firstly to protect the motor mechanically when this is used and the gear and on the other hand to reduce the inertia of the elements driven by the spring.
  • the large accelerations and speeds put into play through the gear train during closing may cause premature wear of at least some parts of the engine and the gear.
  • the direction of rotation of the most downstream driving element is always the same.
  • the motor can be started.
  • the downstream drive element has a higher rotation speed than when it is driven by the motor, the freewheel coupling device is uncoupled, the drive element the most downstream and the motor rotate freely.
  • the driving element has slowed down to a lower rotational speed than when it is controlled by the motor. But in this second phase, the freewheel coupling device mates and the motor controls the drive wheel for a complete reset of the closing spring.
  • the freewheel coupling devices are used in the high or medium voltage circuit breaker spring controls to allow the discharge of the spring (s) to open or close the circuit breaker contacts without have a torque applied to the crank or the motor.
  • These freewheel coupling devices are thus imperative first for reasons of safety: in fact, under no circumstances should an operator be injured by an inadvertent and uncontrolled rotation of a crank.
  • any opening and closing of the circuit breaker contacts could be delayed due to the rotational inertia of the crank and / or the motor during spring unloading.
  • the document EP 1 408 522 discloses a high voltage circuit breaker spring drive comprising a freewheel coupling device which consists of a conical clutch. Thanks to this conical clutch, there is transmission of a torque from a motor shaft to a rotary shaft in a predetermined direction of rotational movement between the two shafts and freewheeling operation of the rotary shaft in a direction opposite to the movement rotating between the two trees.
  • WO2008 / 117437 discloses a spring-loaded control for a high-voltage switchgear comprising a motor 3 for charging a spring of closing 22 (compression coil spring) to which it is coupled via a set of three wheels, namely an output gear wheel 16 of the engine, an intermediate gear 33, 43 in permanent engagement with the output wheel 16 and a primary gear 5 arranged coaxially with the drive shaft 1 of the movable switch contact and incorporating a freewheeling coupling device for disengagement with the intermediate wheel 33, 43 as explained below.
  • a spring of closing 22 compression coil spring
  • the primary wheel comprises a set of three pinions A, B, C arranged side by side and coaxially with the drive shaft 1 of the movable switch contact, in which the center pinion B is provided with teeth over its entire length.
  • external periphery while the two pinions A, C end are toothless on a circular peripheral zone, respectively 34a, 34b, the rest of their outer periphery being provided with teeth.
  • the pinion C end arranged closest to the switch is provided on its inner periphery two pawls 41a, 41b arranged diametrically opposite to each other and mounted to move in translation according to the diameter of the pinion C.
  • pawls are complementary shapes with the beveled teeth formed on the entire inner periphery 36 of the pinion A of the center.
  • the closing spring 22 is fixed directly to the pinion A via a pin 7 and an arm 8 forming the compression arm of the spring 22.
  • the circular zone 34 without teeth of the pinion A allows the uncoupling between the motor 3 and the pinion A itself secured to the closing spring 22, thereby preventing any damage to the motor 3 in case of sudden stop. It is the same with the gear C whose toothless circular area 34b with respect to the circular zone without teeth 34a of the pinion A also allows uncoupling with the engine 3.
  • pinion B continues to rotate. When loading the closing spring 22, the two pawls 41a, 41b of the pinion C are engaged in the internal teeth 36 of the pinion B. Consequently, the pinion B rotates simultaneously in the clockwise direction with the pinion C.
  • the major disadvantage of the closing spring control according to this application WO 2008/117437 is that the closing operation is slowed by the inertia of the rotating parts, namely the pinions A, B, C with the pawls 41a, 41b and the intermediate wheel 33 and the motor.
  • the coupling device disclosed according to this application WO 2008/117437 can not be implemented in a crank-loading control, because due to the continuous drive of the input wheel 16, there would necessarily be a risk of driving the crank.
  • the patent US4491709 discloses a spring loaded control for use in a circuit breaker for short-circuit currents from 85kA to 600V or from 100 to 150kA to 480V.
  • the spring-loaded control according to this patent makes it possible to load a closing spring 70 (compression coil spring) either by means of an actuating handle 98 or by means of a motor 180, the unloading of the spring making it possible to close the movable contact 26 on the fixed contact of the breaker.
  • This control comprises a set of ratchet wheels 178 including an annular ratchet wheel 188 with teeth 190 over its entire outer periphery and teeth 194 over its entire inner periphery.
  • This control also comprises two completely separate control mechanisms with the first comprising the actuating handle 98 for manually controlling the rotation of the ratchet wheel 188 and the second comprising the motor 180 for controlling the rotation of the ratchet wheel 188.
  • first mechanism comprises firstly a stop pawl (anti-return) 201 mounted at the peripheral proximity of the ratchet wheel 188 and whose function is to prevent it from rotating in a clockwise direction.
  • a push rod 182 is connected to another connecting rod 186 and can push another pawl 192 also mounted at the peripheral proximity of the ratchet wheel 188.
  • this other pawl 192 allows the rotation of the wheel ratchet 188 in a counterclockwise direction in front view of Figure 4G, when the connecting rod 186 is manually operated. Thanks to the non-return ratchet 201 the ratchet wheel 188 can not apply a torque to the connecting rod 186.
  • the second mechanism comprises three pawls 202 mounted at 120 ° to each other on the shaft 166 and in meshing with the teeth 194 at the inner periphery of the ratchet wheel 188.
  • On the shaft 166 is fixedly mounted a pinion 206 which is connected to a motor 180 by means of another pinion 210.
  • the motor pinion 206 rotates the three pawls 202 in a anti-clockwise in front view according to Figure 4J, so that they engage in the teeth 194 of the inner periphery of the ratchet wheel 188.
  • the rotational drive of the ratchet wheel 188 allows the rotation of the three pawls 202 counterclockwise ( Figure 4J) but does not cause the actuation of said pawl 192.
  • the pawl 192 does not mesh with the teeth 190 at the outer periphery of the ratchet wheel 188 while the three pawls 202 are in contact with each other. taken with the teeth 194 at the inner periphery of the ratchet wheel 188 and thus allow the rotation of the latter.
  • the three pawls 202 rotated by the motor 180 for the rotation of the ratchet wheel 188 do not generate a driving torque on the pawl 192 and therefore the connecting rod 186 connected to the handle 98.
  • the major disadvantage of the order according to the patent US 4491709 is its mechanical complexity with two separate mechanisms for hand loading by the handle 98 or motor 180.
  • the use of a large number of mechanical drive elements connecting the actuating handle 98 to the pawl 192, such as connecting rods 182, 186 and their hinge axes 184, 187 makes complex assembly and operation of the control.
  • the use of three different types of pawls 201, 192, 202 all arranged at peripheral proximity of the ratchet wheel 188 as a non-return ratchet makes it even more complex assembly and operation of the control.
  • the object of the invention is therefore to propose a new spring-type control unit equipped with a freewheel coupling device for discharging spring (s) for opening or closing contacts.
  • a freewheel coupling device for discharging spring (s) for opening or closing contacts.
  • a particular aim is therefore to propose a new command of this type which is simple to make and which does not interfere with the closing or opening operation of the contacts of the electrical equipment during the unloading of the spring (s).
  • the object of the invention is a spring-type control for a high-voltage or medium-voltage switch comprising at least one spring, a first gear gear adapted to be rotated with drive power, a shaft adapted to rotate a movable contact of the switch during an operation of the switch, an arm secured to the shaft and connected to the spring (s), a freewheel coupling device coupling the first gear and the drive shaft in order to transmitting the driving power to the spring and thereby charging and uncoupling it to transmit the loaded spring torque to the moving contact but not the driving power.
  • the invention consists in judiciously integrating a freewheel coupling device consisting of a toothed wheel and a pawl meshing with it during the loading of the spring to its top dead point of compression, in abutment against a release element to disengage from the meshing engagement once the top dead center is reached, which allows the freewheeling operation of the arm and therefore of the drive shaft relative to the toothed wheel during actuation of the release element.
  • Such a device is particularly simple to implement and its freewheel operation does not lead to other element (s) than the arm, which avoids having a rotational inertia of parts to bear and therefore it does not affect the operation of closing or opening the switch.
  • the control according to the invention may comprise a plurality of pawls adapted to all be in the same positions simultaneously.
  • the release element is a pivotally mounted lever to allow it to be moved away from the pawl.
  • the implementation of the release element is thus simple.
  • the invention also relates to a high or medium voltage electrical switchgear equipped with at least one switch, comprising a spring drive as described above.
  • the apparatus according to the invention may be gas-insulated, dead-tank type, or air-insulated, of the live-tank type. It can advantageously be a circuit breaker.
  • control comprises a single closing spring of the switch.
  • the spring drive according to the invention comprises a mechanical coupling device freewheel between a crank or a motor not shown (e) and the drive shaft 1 of a movable contact of the circuit breaker, the freewheel operation performing a mechanical uncoupling between the crank or the motor and the drive shaft 1 when unloading the closing spring 11.
  • control firstly comprises a first gear wheel, called the output wheel 10, which is directly or indirectly driven by a crank or by a motor.
  • This output gear wheel 10 is in permanent engagement with a straight toothing performed on the entire circumferential outer periphery 5 of a second gear 2 mounted on a bearing not shown. In other words, this output gear wheel 10 is permanently coupled to the toothed wheel 2.
  • the second toothed wheel 2 comprises on an inner periphery of the teeth 4 of beveled shape.
  • an arm 3 secured to the shaft 1 for rotating the movable contact of the circuit breaker via the cam 12 shown in more detail in FIG. figure 3A .
  • the arm 3 is fixed at the end of shaft 1 by screwing.
  • the drive shaft 1 and the arm 3 are adapted to be rotated simultaneously.
  • a pivot 6 which is itself connected to a helical compression spring 11 via a transmission system comprising a chain 13, a return pulley and rod 14 bearing against the end free of closing spring 11.
  • a pawl 7 is pivotally mounted about an axis 9 on the free end of the arm 3.
  • the pawl 7 meshes with the teeth 4 of the inner periphery of the second gear 2: there is therefore in this non-pivoted position a mechanical coupling between the latter and the arm 3 and therefore the drive shaft to which it is attached.
  • the pawl 7 is not meshing with the teeth 4: there is therefore in this pivoted position a mechanical disconnection between the toothed wheel 2 and the arm 3.
  • This trigger lever 8 is a lever pivoting about an axis 80 and arranged near the toothed wheel 2.
  • the closing spring control 11 finally comprises a non-return device, not shown, the function of which is to prevent either the output gearwheel 10 from rotating in the clockwise direction or the gearwheel 2 from rotating directly in the direction of rotation. the anti-clockwise direction in front view according to the figures.
  • the function of this non-return device will be explained below in relation to the operation of the control.
  • the arrangement of such a non-return device which can only be mechanical, can be easily achieved in the control by one skilled in the art without impairing the simplicity thereof.
  • the output gear wheel 10 When it is desired to load the closing spring 11, the output gear wheel 10 is driven by a crank or a motor in the counterclockwise direction as seen from the front in the figures.
  • the second gearwheel 2 is then rotated in the clockwise direction.
  • the pawl 7 is then engaged with the teeth 4 of the inner periphery of the toothed wheel and thus the arm 3 is coupled in rotation with the toothed wheel 2 in this clockwise direction: it can be seen in FIG. figure 4 especially the mating between the actual coupling part 70 of the ratchet 7 complementary with the teeth 4 of beveled shape.
  • the anti-return device if an operator, who turns the output gearwheel 10 by means of the crank during the loading of the spring 11, looses it inadvertently then the arm 3 can not cause the toothed wheel 2 counter-clockwise. In other words, the operator is not likely to be injured by the crank because it can not be rotated by the gears 10, 2 blocked by the anti-return device.
  • the trip lever 8 When the circuit breaker is to be closed to cut a current, the trip lever 8 is rotated clockwise as best shown with the arrow shown in FIG. figure 3B . Once the release lever 8 is no longer in mutual contact with the pawl 7, the rotational locking of the arm 3 in a clockwise direction in front of the figures is removed.
  • the pawl 7 is also already no longer engaged with the teeth 4 of the inner periphery of the toothed wheel 2, the arm 3 and the switch drive shaft 1 to which it is attached then turn clockwise. under the pulling force of the chain 13 generated by the unloading force of the closing spring 11. In other words, they operate in freewheel with the toothed gear 2 mechanically uncoupled which therefore remains motionless in rotation.
  • the drive shaft 1 therefore drives the moving contact of the circuit breaker via the cam 15.
  • the closing spring control 11 provided with the ratchet freewheel coupling device 7 is simple to implement and does not include a rotating component whose inertia would be detrimental to the closing operation of the circuit breaker during unloading. spring.
  • control according to the invention can also integrate several springs to compress.

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  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)

Claims (8)

  1. Steuerung vom Federtyp für einen Hochspannungs- oder Mittelspannungsschalter, umfassend wenigstens eine Feder (11), ein erstes Zahnrad (10), das dazu ausgelegt ist, mit einer Antriebsleistung zur Drehung angetrieben zu werden, eine Welle (1), die dazu ausgelegt ist, einen beweglichen Kontakt des Schalters während eines Betriebs des Schalters zur Drehung anzutreiben, einen Arm (3), der mit der Welle (1) verbunden und mit der Feder / den Federn (11) verbunden ist, eine Freilauf-Kopplungsvorrichtung, die das erste Zahnrad (10) und die Antriebswelle (1) miteinander koppelt, um die Antriebsleistung auf die Feder (11) zu übertragen und sie somit zu spannen, und sie zu entkoppeln, um das Moment der gespannten Feder auf den beweglichen Kontakt, jedoch nicht auf die Antriebsleistung zu übertragen, dadurch gekennzeichnet, dass die Freilauf-Kopplungsvorrichtung umfasst:
    - ein zweites Zahnrad (2), dessen gesamter Außenumfang (5) ausgestattet ist mit Zähnen in permanentem Eingriff mit dem ersten Zahnrad (10), und dessen gesamter Innenumfang (4) mit Zähnen ausgestattet ist,
    - ein Freisetzelement (8), das in der Umfangsnähe des zweiten Zahnrads (2) angeordnet ist;
    - wenigstens eine Klinke (7, 70), die schwenkbar an dem Arm (3) montiert und dazu ausgelegt ist, sich in den folgenden jeweiligen Positionen zu befinden:
    • in Eingriff mit den inneren Zähnen (4) des zweiten Zahnrads (2), um die Feder (11) zu spannen, solange sie nicht ihren oberen Kompressionstotpunkt durch Drehung in einer gegebenen Drehrichtung, des zweiten Zahnrads (2) und des somit in Eingriff mit selbigem befindlichen Arms (3) erreicht hat,
    • in gegenseitiger Anlage gegen das Freisetzelement (8), sobald die Feder (11) ihren oberen Kompressionstotpunkt überschreitet und somit außer Eingriff mit den inneren Zähnen (4) durch Schwenken an dem Arm in der Richtung entgegengesetzt zur Drehrichtung des zweiten Zahnrads gelangt, wobei der Arm (3) blockiert wird,
    • zur Beabstandung des Freisetzhebels (8) durch Einwirkung auf selbigen, um die Blockierung des Arms zu lösen und ihn unter der Entspannungskraft der Feder / der Federn (11) in der gleichen gegebenen Drehrichtung zur Drehung anzutreiben, wohingegen das zweite Zahnrad (2) unbeweglich bleibt.
  2. Federsteuerung nach Anspruch 1, dadurch gekennzeichnet, dass sie eine Mehrzahl von Klinken umfasst, die dazu ausgelegt sind, alle gleichzeitig in den gleichen Positionen zu sein.
  3. Federsteuerung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Freisetzelement ein Hebel (8) ist, der schwenkbar montiert ist, um seine Beabstandung von der Klinke (7) zu ermöglichen.
  4. Elektrisches Hoch- oder Mittelspannungsgerät, das mit wenigstens einem Schalter ausgestattet ist, umfassend eine Federsteuerung nach einem der Ansprüche 1 bis 3.
  5. Gerät nach Anspruch 4, dadurch gekennzeichnet, dass es eine Gasisolierung vom Typ dead-tank aufweist.
  6. Gerät nach Anspruch 4, dadurch gekennzeichnet, dass es eine Luftisolierung vom Typ live-tank aufweist.
  7. Gerät nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, dass der Schalter ein Sicherungsschalter ist.
  8. Gerät nach einem der Ansprüche 4 bis 7, dadurch gekennzeichnet, dass die Steuerung eine einzige Feder (11) zum Schließen des Schalters umfasst.
EP13717788.7A 2012-04-25 2013-04-23 Steuerung von feder(n) für einen hoch- oder mittelspannungsschutzschalter mit einer klinken-freilaufkopplungsvorrichtung Active EP2842143B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1253785A FR2990051B1 (fr) 2012-04-25 2012-04-25 Commande de type a ressort(s) d'un interrupteur a haute ou moyenne tension munie d'un dispositif d'accouplement a roue libre a cliquet
PCT/EP2013/058343 WO2013160272A1 (fr) 2012-04-25 2013-04-23 Commande de type a ressort(s) d'un interrupteur à haute ou moyenne tension munie d'un dispositif d'accouplement à roue libre à cliquet

Publications (2)

Publication Number Publication Date
EP2842143A1 EP2842143A1 (de) 2015-03-04
EP2842143B1 true EP2842143B1 (de) 2016-06-08

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EP13717788.7A Active EP2842143B1 (de) 2012-04-25 2013-04-23 Steuerung von feder(n) für einen hoch- oder mittelspannungsschutzschalter mit einer klinken-freilaufkopplungsvorrichtung

Country Status (6)

Country Link
US (1) US9583281B2 (de)
EP (1) EP2842143B1 (de)
CN (1) CN104350561B (de)
FR (1) FR2990051B1 (de)
IN (1) IN2014MN02136A (de)
WO (1) WO2013160272A1 (de)

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CN104299812B (zh) * 2014-06-27 2016-11-09 国家电网公司 集成拐臂及使用该集成拐臂的弹簧操动机构
EP3113200A1 (de) * 2015-07-03 2017-01-04 General Electric Technology GmbH Ansteuerungseinheit für einen mittelspannungs- oder hochspannungsleistungsschalter
EP3553804B1 (de) * 2018-04-10 2021-03-24 Rail Power Systems GmbH Hochspannungs - oder mittelspannungsanlage
FR3080663B1 (fr) * 2018-04-26 2020-05-22 Schneider Electric Industries Sas Module de transmission d'un effort
FR3089049B1 (fr) * 2018-11-26 2020-11-06 Schneider Electric Ind Sas Mécanisme pour la commande de fermeture et d’ouverture d’un dispositif de coupure de courant pour appareil électrique interrupteur
CN112713022B (zh) * 2020-12-16 2022-09-02 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） 一种大电流快速断路器的惯性减震装置

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WO2013160272A1 (fr) 2013-10-31
US20150107973A1 (en) 2015-04-23
FR2990051B1 (fr) 2014-05-30
EP2842143A1 (de) 2015-03-04
FR2990051A1 (fr) 2013-11-01
CN104350561B (zh) 2016-10-12
US9583281B2 (en) 2017-02-28
IN2014MN02136A (de) 2015-08-21
CN104350561A (zh) 2015-02-11

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