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EP2016601B1 - Power switch, especially high-current switch - Google Patents

Power switch, especially high-current switch Download PDF

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Publication number
EP2016601B1
EP2016601B1 EP07728946A EP07728946A EP2016601B1 EP 2016601 B1 EP2016601 B1 EP 2016601B1 EP 07728946 A EP07728946 A EP 07728946A EP 07728946 A EP07728946 A EP 07728946A EP 2016601 B1 EP2016601 B1 EP 2016601B1
Authority
EP
European Patent Office
Prior art keywords
pole
moving contact
welded
fixed contact
conductor rail
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.)
Active
Application number
EP07728946A
Other languages
German (de)
French (fr)
Other versions
EP2016601A1 (en
Inventor
Ralf-Peter Kurth
Clemens RÜTHNICK
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP2016601A1 publication Critical patent/EP2016601A1/en
Application granted granted Critical
Publication of EP2016601B1 publication Critical patent/EP2016601B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/6606—Terminal arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5822—Flexible connections between movable contact and terminal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H2001/5894—Electric connections to or between contacts; Terminals the extension of the contact being welded to a wire or a bus

Definitions

  • Object of the present invention is to develop a circuit breaker of the type mentioned, which has a higher current carrying capacity.
  • connection means are electron beam welded. Electron beam welding is particularly advantageous because the welds are executable in high precision.
  • FIG. 2 shows the solid contact 12 of the vacuum interrupter 5 in the form of a cylindrical bolt is connected to the first connection means 13 in the form of a copper-shaped plate having a bolt of the fixed contact 12 corresponding recess in the area 17 encircling electron beam welded, creating a non-positive and cohesive connection between the fixed contact 12 and the second connection means 13 is formed.
  • the second connection means 13 is also further electron beam welded to the first busbars 6 in the region 18.
  • To stabilize an aluminum spacer 19 is disposed between the busbars.
  • FIG. 3 shows a detailed view in the region of the moving contact of the vacuum interrupter 5 from the FIG. 1 ,
  • the moving contact 8 is electron beam welded at its tapered end 20 in the area 21 circumferentially with the second connection means 11 in the form of a copper-shaped plate with a corresponding recess of the bolt 20 of the moving contact 8 recess.
  • Flexible conductors 22 and 23 are also electron beam welded in the regions 24 to the second connection means 11 and electron beam welded at 26 and 27 to the second bus bar 7. Due to the non-positive and cohesive connection in the regions 21, 24, 25, 26 and 27, no further screw connections are required as fastening means in the region of the flexible current conductors 22 and 23 and the moving contact 8.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Linear Motors (AREA)

Abstract

A fixed contact (12) links to a first conductor rail (6) via a first means (13) of connection. A moving contact (8) links to a second conductor rail (7) on a pole unit via a second means (11) of connection. The first means of connection are welded to the first conductor rail and the fixed contact. The second means of connection are welded to the second conductor rail and the moving contact.

Description

Die Erfindung betrifft einen Leistungsschalter, insbesondere einen Hochstromschalter, mit mindestens einer Poleinheit mit einem Polkopf und einem Polträger und einer dazwischen angeordneten Vakuumschaltröhre mit einem Festkontakt und einem Bewegkontakt, wobei der Festkontakt über ein erstes Anschlussmittel mit einer ersten Stromschiene der Poleinheit und der Bewegkontakt über ein zweites Anschlussmittel mit einer zweiten Stromschiene der Poleinheit verbunden sind.The invention relates to a circuit breaker, in particular a high-current switch, with at least one pole unit having a pole head and a pole carrier and a vacuum interrupter arranged therebetween with a fixed contact and a moving contact, wherein the fixed contact via a first connection means with a first busbar of the pole unit and the moving contact via a second connection means are connected to a second busbar of the pole unit.

Ein derartiger Leistungsschalter ist beispielsweise aus der Siemens Druckschrift "Siemens HG 11.11, 1999" bekannt. Der dort offenbarte Hochstromschalter als Leistungsschalter umfasst drei Poleinheiten mit jeweils einem Polkopf und einem polträger sowie jeweils eine dazwischen angeordnete Vakuumschaltröhre. Ein Festkontakt und ein Bewegkontakt der Vakuumschaltröhre sind mit ersten und zweiten Stromschienen der poleinheit verbunden. Zur Verbindung der Kontakte mit den Stromschienen werden bei diesem vorbekannten Leistungsschalter Anschlussmittel einerseits an dem jeweiligen Kontakt und andererseits an der jeweiligen Stromschiene verschraubt.Such a circuit breaker is known for example from the Siemens publication "Siemens HG 11.11, 1999". The disclosed therein high-current switch as a circuit breaker comprises three pole units, each with a pole head and a pole carrier, and each one interposed vacuum interrupter. A fixed contact and a moving contact of the vacuum interrupter are connected to first and second bus bars of the pole unit. To connect the contacts with the busbars connecting means are screwed on the one hand to the respective contact and on the other hand to the respective busbar in this prior art circuit breaker.

Ein derartiger Leistungsschalter ist ebenfalls aus der EP 0 866 481 A2 bekannt.Such a circuit breaker is also from the EP 0 866 481 A2 known.

Aufgabe der vorliegenden Erfindung ist es, einen Leistungsschalter der eingangs erwähnten Art weiterzubilden, welcher über eine höhere Stromtragfähigkeit verfügt.Object of the present invention is to develop a circuit breaker of the type mentioned, which has a higher current carrying capacity.

Erfindungsgemäß wird diese Aufgabe bei einem Leistungsschalter der eingangs erwähnten Art dadurch, dass die ersten Anschlussmittel mit der ersten Stromschiene und dem Festkontakt sowie die zweiten Anschlussmittel mit der zweiten Stromschiene und dem Bewegkontakt verschweißt sind.This object is achieved in a circuit breaker of the type mentioned in the fact that the first connection means with the first busbar and the fixed contact and the second connection means with the second busbar and the moving contact are welded.

Durch die Schweißstellen zwischen dem ersten Anschlussmittel und der ersten Stromschiene sowie dem Festkontakt und zwischen dem zweiten Anschlussmittel und der zweiten Stromschiene und dem Bewegkontakt sind in vorteilhafterweise kraft- und stoffschlüssige Verbindungsbereiche ausgebildet. Durch diese kraft- und stoffschlüssigen Verbindungsbereiche weist der Strompfad von der ersten Stromschiene über die Vakuumschaltröhre zur zweiten Stromschiene eine ausreichende mechanische Stabilität auf und kommt insbesondere ohne Verschraubungen im Bereich der Anschlussmittel aus. Dies ist deswegen vorteilhaft, weil die Temperatur an den Verschraubungen nicht mehr als 65 bis 75 Grad Kelvin über der Umgebungstemperatur des Leistungsschalters liegen soll. Durch das Verschweißen entfällt diese Problematik, wodurch die Stromtragfähigkeit des gesamten Leistungsschalters deutlich erhöht ist.By the welds between the first connection means and the first busbar and the fixed contact and between the second connection means and the second busbar and the moving contact are formed in positive and cohesive connection areas. By virtue of these non-positive and cohesive connection regions, the current path from the first busbar via the vacuum interrupter to the second busbar has sufficient mechanical stability and, in particular, does not have any screw connections in the region of the connection means. This is advantageous because the temperature at the glands should not be more than 65 to 75 degrees Kelvin above the ambient temperature of the circuit breaker. By welding eliminates this problem, whereby the current carrying capacity of the entire circuit breaker is significantly increased.

In einer bevorzugten Ausgestaltung weist die zweite Stromschiene einen flexiblen Stromleiter auf und ist mit dem flexiblen Stromleiter und dem zweiten Anschlussmittel verschweißt.In a preferred embodiment, the second bus bar on a flexible conductor and is welded to the flexible conductor and the second connection means.

In einer besonders bevorzugten Ausführungsform sind die Anschlussmittel elektronenstrahlverschweißt. Elektronenstrahlverschweißungen sind besonders vorteilhaft, weil die Schweißnähte in hoher Präzision ausführbar sind.In a particularly preferred embodiment, the connection means are electron beam welded. Electron beam welding is particularly advantageous because the welds are executable in high precision.

Die Erfindung wird im Folgenden anhand der Zeichnung und eines Ausführungsbeispiels mit Bezug auf die beiliegenden Figuren näher erläutert. Es zeigen:

Figur 1
eine Querschnittsansicht eines erfindungsgemäßen Leistungsschalters;
Figur 2
eine Detailansicht im Bereich des Festkontaktes; und
Figur 3
eine Detailansicht im Bereich des Bewegkontaktes.
The invention will be explained in more detail below with reference to the drawing and an embodiment with reference to the accompanying figures. Show it:
FIG. 1
a cross-sectional view of a circuit breaker according to the invention;
FIG. 2
a detailed view in the area of the fixed contact; and
FIG. 3
a detailed view in the area of the moving contact.

Figur 1 zeigt einen Hochstromschalter als Leistungsschalter für Hochstromanwendungen in einer Querschnittsansicht. Der Leistungsschalter 1 umfasst drei Poleinheiten für die drei Phasen eines zu schaltenden Wechselstromes, von denen figürlich dargestellt nur eine Poleinheit mit 2 bezeichnet ist. Die Poleinheit 2 umfasst einen Polkopf 3 sowie einen Polträger 4, zwischen denen ein Kontaktsystem 5 in Form einer Vakuumschaltröhre 5 zum Schalten eines Stromes zwischen einer ersten Stromschiene 6 und einer zweiten Stromschiene 7 der Poleinheit 2 angeordnet ist. Ein Bewegkontakt 8 der Vakuumschaltröhre 5 ist über ein Antriebsgestänge 9 mit einer Antriebseinheit 10 des Leistungsschalters gekoppelt, wobei die Antriebseinheit 10 zum Einleiten einer Schaltbewegung in den Bewegkontakt 8 des Kontaktsystems 5 ausgebildet ist. Der Bewegkontakt 8 ist mittels zweiten Anschlussmitteln 11 mit der zweiten Stromschiene 7 verbunden. Ein Festkontakt 12 der Vakuumschaltröhre 5 ist über erste Anschlussmittel 13 mit der ersten Stromschiene 6 elektrisch leitend verbunden. Die Poleinheit ist mittels Stützeinrichtungen 14 und 15 an einer Haltewand 16 des Leistungsschalters 1 befestigt. FIG. 1 shows a high-current switch as a circuit breaker for high current applications in a cross-sectional view. The circuit breaker 1 comprises three pole units for the three phases of an alternating current to be switched, of which only one polar unit is shown in FIG. 2. The pole unit 2 comprises a pole head 3 and a pole carrier 4, between which a contact system 5 in the form of a vacuum interrupter 5 for switching a current between a first bus bar 6 and a second bus bar 7 of the pole unit 2 is arranged. A moving contact 8 of the vacuum interrupter 5 is coupled via a drive linkage 9 to a drive unit 10 of the circuit breaker, wherein the drive unit 10 is designed to initiate a switching movement in the moving contact 8 of the contact system 5. The moving contact 8 is connected by means of second connection means 11 to the second busbar 7. A fixed contact 12 of the vacuum interrupter 5 is electrically conductively connected via first connection means 13 to the first bus bar 6. The pole unit is fixed by means of support means 14 and 15 to a retaining wall 16 of the circuit breaker 1.

Figur 2 zeigt eine Querschnittsansicht einer Detaildarstellung im Bereich des Festkontaktes 12 der Vakuumschaltröhre 5. Der Festkontakt 12 der Vakuumschaltröhre 5 in Form eines zylindrischen Bolzens ist mit dem ersten Anschlussmittel 13 in Form einer kupferförmigen Platte, welche eine dem Bolzen des Festkontaktes 12 entsprechende Ausnehmung aufweist, im Bereich 17 umlaufend elektronenstrahlverschweißt, wodurch eine kraft- und stoffschlüssige Verbindung zwischen dem Festkontakt 12 und dem zweiten Anschlussmittel 13 ausgebildet ist. Das zweite Anschlussmittel 13 ist des Weiteren mit den ersten Stromschienen 6 im Bereich 18 ebenfalls elektronenstrahlverschweißt. Zur Stabilisierung ist zwischen den Stromschienen ein Aluminiumabstandshalter 19 angeordnet. FIG. 2 shows the solid contact 12 of the vacuum interrupter 5 in the form of a cylindrical bolt is connected to the first connection means 13 in the form of a copper-shaped plate having a bolt of the fixed contact 12 corresponding recess in the area 17 encircling electron beam welded, creating a non-positive and cohesive connection between the fixed contact 12 and the second connection means 13 is formed. The second connection means 13 is also further electron beam welded to the first busbars 6 in the region 18. To stabilize an aluminum spacer 19 is disposed between the busbars.

Figur 3 zeigt eine Detailansicht im Bereich des Bewegkontaktes der Vakuumschaltröhre 5 aus der Figur 1. Der Bewegkontakt 8 ist an seinem verjüngten Ende 20 im Bereich 21 umlaufend mit dem zweiten Anschlussmittel 11 in Form einer kupferförmigen Platte mit einer dem Bolzen 20 des Bewegkontaktes 8 entsprechenden Ausnehmung elektronenstrahlverschweißt. Flexible Stromleiter 22 und 23 sind in den Bereichen 24 mit dem zweiten Anschlussmittel 11 ebenfalls elektronenstrahlverschweißt und bei 26 und 27 mit der zweiten Stromschiene 7 elektronenstrahlverschweißt. Durch die kraft- und stoffschlüssige Verbindung in den Bereichen 21, 24, 25, 26 und 27 sind im Bereich der flexiblen Stromleiter 22 und 23 und des Bewegkontaktes 8 keine weiteren Verschraubungen als Befestigungsmittel notwendig. FIG. 3 shows a detailed view in the region of the moving contact of the vacuum interrupter 5 from the FIG. 1 , The moving contact 8 is electron beam welded at its tapered end 20 in the area 21 circumferentially with the second connection means 11 in the form of a copper-shaped plate with a corresponding recess of the bolt 20 of the moving contact 8 recess. Flexible conductors 22 and 23 are also electron beam welded in the regions 24 to the second connection means 11 and electron beam welded at 26 and 27 to the second bus bar 7. Due to the non-positive and cohesive connection in the regions 21, 24, 25, 26 and 27, no further screw connections are required as fastening means in the region of the flexible current conductors 22 and 23 and the moving contact 8.

Wie aus der Figur 1 ersichtlich, sind der Polkopf 3 und der Polträger 4 mit Kühlkörpern 3a bzw. 4a versehen, welche zur Abfuhr der durch die hohen Ströme im Bereich des Festkontaktes 12 bzw. des Bewegkontaktes 8 erzeugten Wärme dienen. Zum Anschluss des Hochstromschalters 1 sind an der ersten Stromschiene 6 Befestigungsmittel 28 und an der zweiten Stromschiene 7 Befestigungsmittel 29 vorgesehen, welche jeweils zur Verschraubung der ersten Stromschiene 6 und der zweiten Stromschiene 7 beispielsweise mit Sammelschienen einer Schaltanlage vorgesehen sind. Durch die Kühlkörper 3a und 4a wird die Temperatur der stromführenden Teile derartig abgesenkt, dass im Bereich der Verschraubungen 28 bzw. 29 die Temperatur im erforderlichen Bereich von weniger als 65 bis 75 Grad Kelvin über der Umgebungstemperatur liegt.Like from the FIG. 1 can be seen, the pole head 3 and the pole carrier 4 are provided with heat sinks 3a and 4a, respectively, which serve to dissipate the heat generated by the high currents in the region of the fixed contact 12 and the Bewegkontaktes 8. For connecting the high-current switch 1 fastening means 28 and the second busbar 7 fastening means 29 are provided on the first bus bar 7, which are respectively provided for screwing the first busbar 6 and the second busbar 7, for example with busbars of a switchgear. By the heat sinks 3a and 4a, the temperature of the current-carrying parts is lowered such that in the region of the screw 28 and 29, the Temperature is in the required range of less than 65 to 75 degrees Kelvin above ambient temperature.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Leistungsschalterbreakers
22
Poleinheitpole unit
33
Polkopfpole head
44
Polträgerpole carrier
55
VakuumschaltröhreVacuum interrupter
66
Erste StromschieneFirst busbar
77
Zweite StromschieneSecond busbar
88th
Bewegkontaktmoving contact
99
Antriebsgestängedrive linkage
1010
Antriebseinheitdrive unit
1111
Zweite AnschlussmittelSecond connection means
1212
Festkontaktfixed contact
1313
Erste AnschlussmittelFirst connection means
14, 1514, 15
Stützeinrichtungensupport devices
16,16
Haltewandretaining wall
17, 1817, 18
Verbindungsbereicheconnecting areas
1919
Stabilisierungselementstabilizing element
2020
BewegkontaktbolzenBewegkontaktbolzen
2121
Verbindungsbereicheconnecting areas
22, 2322, 23
Flexible StromleiterFlexible conductor
24, 25, 26, 2724, 25, 26, 27
Verbindungsbereicheconnecting areas
28, 2928, 29
Befestigungsmittelfastener
3a, 4a3a, 4a
Kühlkörperheatsink

Claims (3)

  1. Power switch, especially a high-current switch, comprising at least one pole unit (2) with a pole head (3) and a pole base (4) and a vacuum switching tube (5) interposed therebetween, said vacuum switching tube having a fixed contact (12) and a moving contact (8, 20), the fixed contact (12) being connected to a first conductor rail (6) of the pole unit (2) via a first connecting element (13) and the moving contact (8) being connected to a second conductor rail (7) of the pole unit (2) via a second connecting element (11), characterized in that the first connecting element (13) is welded to the first conductor rail (6) and the fixed contact (12), and the second connecting element (11) is welded to the second conductor rail (7) and the moving contact (8, 20).
  2. Power switch according to Claim 1, characterized in that the second conductor rail (7) has a flexible current conductor (22, 23) and is welded to the flexible current conductor (22, 23) and the second connecting element (11).
  3. Power switch according to Claim 1 or 2, characterized in that the connecting elements (11, 13) are electron beam welded.
EP07728946A 2006-05-10 2007-05-09 Power switch, especially high-current switch Active EP2016601B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202006007973U DE202006007973U1 (en) 2006-05-10 2006-05-10 Power circuit breaker to act as full-load switch has pole unit with pole head and pole carrier and vacuum switching tube in-between with fixed and moving contacts
PCT/EP2007/054494 WO2007128831A1 (en) 2006-05-10 2007-05-09 Power switch, especially high-current switch

Publications (2)

Publication Number Publication Date
EP2016601A1 EP2016601A1 (en) 2009-01-21
EP2016601B1 true EP2016601B1 (en) 2010-06-30

Family

ID=36848650

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07728946A Active EP2016601B1 (en) 2006-05-10 2007-05-09 Power switch, especially high-current switch

Country Status (10)

Country Link
US (1) US20100059479A1 (en)
EP (1) EP2016601B1 (en)
JP (1) JP2009536429A (en)
KR (1) KR20090014291A (en)
CN (2) CN201015105Y (en)
AT (1) ATE472811T1 (en)
CA (1) CA2652047A1 (en)
DE (2) DE202006007973U1 (en)
RU (1) RU2008148581A (en)
WO (1) WO2007128831A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE504931T1 (en) * 2007-12-07 2011-04-15 Abb Technology Ag TRANSMISSION ARRANGEMENT WITH LOW, MEDIUM OR HIGH VOLTAGE AND WITH AT LEAST ONE MOVING CONTACT
GB2511569B (en) 2013-03-08 2015-05-06 Christopher John Stanton Improved switch and associated methods
US9330867B2 (en) * 2014-05-13 2016-05-03 Eaton Corporation Vacuum switching apparatus, and electrode extension assembly and associated assembly method therefor
US9767978B1 (en) * 2016-05-17 2017-09-19 Eaton Corporation Medium voltage breaker conductor with an electrically efficient contour
DE102020210183A1 (en) * 2020-08-12 2022-02-17 Siemens Energy Global GmbH & Co. KG High voltage circuit breaker and method of making a high voltage circuit breaker
DE102020211516A1 (en) * 2020-09-14 2022-03-17 Siemens Energy Global GmbH & Co. KG High voltage circuit breaker with contact sleeve and method of manufacturing the high voltage circuit breaker
DE102020211514B4 (en) * 2020-09-14 2024-02-01 Siemens Energy Global GmbH & Co. KG High voltage circuit breaker with shrink connection and method of manufacturing the high voltage circuit breaker

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4153827A (en) * 1976-01-26 1979-05-08 Merlin Gerin Magnetic blow-out arc extinguishing device
FR2339243A1 (en) * 1976-01-26 1977-08-19 Merlin Gerin Arc extinguishing device using electromagnetic blowing - has two pairs of mechanically separable contacts and blowing coil
DE19636237A1 (en) * 1996-06-21 1998-01-02 Siemens Ag Low-voltage circuit-breaker switching contact system
DE19712182A1 (en) * 1997-03-22 1998-09-24 Abb Patent Gmbh Vacuum chamber
DE19819163A1 (en) * 1998-04-24 1999-10-28 Siemens Ag Switch contact system for LV load switch
US6444939B1 (en) * 2000-05-09 2002-09-03 Eaton Corporation Vacuum switch operating mechanism including laminated flexible shunt connector

Also Published As

Publication number Publication date
ATE472811T1 (en) 2010-07-15
DE202006007973U1 (en) 2006-08-03
JP2009536429A (en) 2009-10-08
KR20090014291A (en) 2009-02-09
WO2007128831A1 (en) 2007-11-15
CA2652047A1 (en) 2007-11-15
DE502007004262D1 (en) 2010-08-12
CN101432832A (en) 2009-05-13
EP2016601A1 (en) 2009-01-21
US20100059479A1 (en) 2010-03-11
RU2008148581A (en) 2010-06-20
CN201015105Y (en) 2008-01-30

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