DE102006006010A1 - Method for fixing the windings of a metal strip coil and device for lifting and transporting metal strip coils - Google Patents

Method for fixing the windings of a metal strip coil and device for lifting and transporting metal strip coils Download PDF

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Publication number
DE102006006010A1
DE102006006010A1 DE102006006010A DE102006006010A DE102006006010A1 DE 102006006010 A1 DE102006006010 A1 DE 102006006010A1 DE 102006006010 A DE102006006010 A DE 102006006010A DE 102006006010 A DE102006006010 A DE 102006006010A DE 102006006010 A1 DE102006006010 A1 DE 102006006010A1
Authority
DE
Germany
Prior art keywords
metal strip
lifting
windings
coil
transporting
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Withdrawn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
DE102006006010A
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German (de)
Inventor
Egon Evertz
Ralf Evertz
Stefan Evertz
Thomas Benner
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.)
Egon Evertz KG GmbH and Co
Original Assignee
Egon Evertz KG GmbH and Co
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 Egon Evertz KG GmbH and Co filed Critical Egon Evertz KG GmbH and Co
Priority to DE102006006010A priority Critical patent/DE102006006010A1/en
Priority to AT07711138T priority patent/ATE460237T1/en
Priority to DE502007003079T priority patent/DE502007003079D1/en
Priority to EP07711138A priority patent/EP1981661B1/en
Priority to PCT/DE2007/000042 priority patent/WO2007090360A1/en
Publication of DE102006006010A1 publication Critical patent/DE102006006010A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/24—Transferring coils to or from winding apparatus or to or from operative position therein; Preventing uncoiling during transfer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/04—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by magnetic means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/42—Gripping members engaging only the external or internal surfaces of the articles
    • B66C1/44—Gripping members engaging only the external or internal surfaces of the articles and applying frictional forces
    • B66C1/46—Gripping members engaging only the external or internal surfaces of the articles and applying frictional forces by inflatable elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/12—Platforms; Forks; Other load supporting or gripping members
    • B66F9/18—Load gripping or retaining means
    • B66F9/182—Load gripping or retaining means by magnetic means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/12—Platforms; Forks; Other load supporting or gripping members
    • B66F9/18—Load gripping or retaining means
    • B66F9/185—Load gripping or retaining means by internally expanding grippers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)

Abstract

The invention relates to a method of fixing the windings of a metal strip coil (10) during lifting or transporting and to a device for carrying out this method. According to the invention, in order to fix the central metal strip layers, an expanding device (13) is inserted into the central hole (11) before the lifting and is expanded in such a way that a pressure is exerted on the inner windings. The expanding device is preferably an inflatable body.

Description

Die Erfindung betrifft ein Verfahren zur Fixierung der Wicklungen eines Metallbandcoils während eines Anhebens oder Transportierens und eine Vorrichtung zum Heben und Transportieren von Metallbandcoils.The The invention relates to a method for fixing the windings of a Metal band coils during one Lifting or transporting and a device for lifting and Transporting metal strip coils.

Zum Transport von solchen Metallbandcoils aus ferromagnetischem Material werden Lasthebemagneten verwendet, die gegenüber einer Lastaufnahme mit Zangen den entscheidenden Vorteil besitzen, dass das aufzunehmende Werkstück ohne Beschädigung angehoben werden kann. Dies ist durch einen großflächigen Angriff von vorhandenen Magnetpolen möglich. Elektromagnete arbeiten auch verschleißfrei und wirtschaftlich und können über die einstellbaren Magnetkräfte eine große Arbeitssicherheit gewährleisten. Im Regelfall wird die Magnetkraft so ausgelegt, dass das Werkstück auch in ungünstigen Fällen, etwa bei Erschütterungen, auftretenden Querkräften oder ähnlichen Belastungen nicht vom Magneten abfallen kann.To the Transport of such metal coils of ferromagnetic material Lifting magnets are used with respect to a load bearing with Pliers have the distinct advantage that the male workpiece without damage can be raised. This is due to a large-scale attack from existing ones Magnetic poles possible. Electromagnets also work wear-free and economical and can over the adjustable magnetic forces a big Ensure occupational safety. As a rule, the magnetic force is designed so that the workpiece as well in unfavorable cases for example, with vibrations, occurring transverse forces or similar Loads can not fall off the magnet.

Das Anheben von Werkstücken mit einer flachen Oberfläche, auf die der Magnet großflächig aufgesetzt werden kann, ist relativ problemlos. Dies gilt auch für Feinblechcoils, sofern deren einzelne Wicklungen so fest aufeinander liegen, dass die beiden Stirnseiten der Coils als eben angesehen werden, so dass dort ein Lasthebemagnet aufgesetzt werden kann. Ein solcher Idealfall setzt jedoch voraus, dass die Wicklung des Coils sowie die Breite des gewickelten Metallbandes exakt ausgeführt sind, so dass die dünne Metallbandkante im gewickelten Coil in einer Ebene liegt. Häufig tritt in der Praxis der Fall auf, dass nach Aufsetzen und Einschalten des elektrischen Lasthebemagneten beim Anheben die in der Mitte befindlichen Wicklungen teleskopartig herausfallen, was dadurch erklärbar ist, dass bereits kleine Luftspalte zwischen den Stirnseiten der Wicklungen und den Polschuhen des Lasthebemagneten zu einer ungenügenden magnetischen Haftung führen, d. h. dass die Magnetkraft dort nicht ausreicht, um die Wicklungen zu halten. Hiergegen gibt es nach dem Stand der Technik verschiedene Lösungsvorschläge. So ist es beispielsweise möglich, die inneren Windungen an den Stirnflächen zu verschweißen. Ein anderer Weg besteht darin, im Mittelloch und an der Außenwand jeweils Spannvorrichtungen anzusetzen, welche für eine ausreichende Druckkraft zum Zusammenhalten des Coils dienen sollen. Schließlich besteht eine weitere Möglichkeit darin, beim Wickeln des Metallbandes nach einer Anzahl von mehreren Wicklungen ein weiteres Blech, das außen übersteht, einzulegen und diesen Vorgang ggf. mehrfach zu wiederholen. Nach Abschluss des Wickelns werden die überstehenden Blechenden an den Stirnseiten umgebogen, so dass auf diese Weise eine Art Paketbildung herbeigeführt wird. Alle vorgenannten Maßnahmen sind jedoch teilweise aufwendig, zum Teil wegen der Oberflächenbeschädigung der Coil-Stirnseite unerwünscht.The Lifting workpieces with a flat surface, placed on the magnet over a large area can be, is relatively easy. This also applies to thin sheet coils, provided that their individual windings are so close to each other, that the two end faces of the coils are considered flat, so that There, a lifting magnet can be placed there. Such an ideal case However, this assumes that the winding of the coil as well as the width the wound metal band are made exactly, so that the thin metal band edge lying in a coiled coil in a plane. Often occurs in practice the Case on that after putting on and switching on the electric lifting magnet when lifting the windings located in the middle telescopically fall out, which explains it is that even small air gaps between the end faces of the Windings and the pole pieces of the lifting magnet to an insufficient magnetic Lead liability, d. H. that the magnetic force is insufficient there to the windings to keep. Against this there are different according to the prior art Solutions. So is for example, it is possible to weld the inner turns at the end faces. Another Way is in the center hole and on the outer wall each clamping devices to set which for a sufficient pressure force to hold the coil together should. Finally exists one more way therein, when winding the metal strip after a number of multiple windings insert another sheet that protrudes outside and repeat this process several times if necessary. After graduation of the winding become the protruding ones Sheet metal ends bent at the front ends, so that way a kind of package formation brought about becomes. All the above measures However, they are sometimes expensive, partly because of the surface damage of the Coil front side undesirable.

Es ist daher Aufgabe der vorliegenden Erfindung ein Verfahren und eine Vorrichtung der eingangs genannten Art zu finden, mit der der Betriebsablauf so wenig wie möglich gestört und eine Beschädigung der Coiloberflächen vermieden wird.It is therefore an object of the present invention, a method and a To find device of the type mentioned, with the operation as little as possible disturbed and damage the coil surfaces is avoided.

Diese Aufgabe wird durch ein Verfahren nach Anspruch 1 oder 2 sowie eine Vorrichtung nach Anspruch 3 oder 4 gelöst.These The object is achieved by a method according to claim 1 or 2 and a Device according to claim 3 or 4 solved.

Erfindungsgemäß wird in das Mittelloch des Metallcoils aus ferromagnetischem Material eine Spreizvorrichtung eingeführt und so aufgespreizt, dass auf die inneren Wicklungen ein Druck ausgeübt wird. Vorzugsweise besteht die Spreizvorrichtung aus einem aufblasbaren Körper mit flexiblen Außenwänden, was auch solche Körper umfasst, die über einen Teil ihrer Außenfläche flexible Außenwände besitzen. Der ballonartige Körper, der vorzugsweise verwendet wird, muss sich nicht über die volle Höhe des Mittelloches erstrecken. Der Körper kann entweder nur im oberen Bereich, dort wo beispielsweise Lasthebemagnete ansetzen sollen oder nur in der Mitte des Wickelkörpers wirken. Durch die Aufspreizung wird bewirkt, dass die druckbeaufschlagten Windungen zu einer Flächenanlage kommen, so dass im Falle des Anhebens eines Coilkörpers mit vertikal gestellter Wickelachse die Reibschlüssigkeit der aneinander liegenden Wicklungen ausreicht, um den eingangs geschilderten Teleskopeffekt zu vermeiden.According to the invention is in the center hole of the metal coils of ferromagnetic material a spreading device introduced and spread so that a pressure is exerted on the inner windings. Preferably, the spreading device consists of an inflatable body with flexible outer walls, what also such bodies includes that over one Part of its outer surface flexible Own outer walls. The balloon-like body, which is preferably used, does not have the full height of the Center hole extend. The body can either only in the upper area, where, for example, lifting magnets should apply or only act in the middle of the bobbin. The spreading causes the pressurized windings to a surface investment come, so in case of lifting a coil body with vertical Asked winding axis the frictional engagement of the adjacent Windings sufficient to the initially described telescopic effect to avoid.

Vorzugsweise wird das Verfahren im Rahmen einer Vorrichtung angewendet, die einen Lasthebemagneten besitzt, so dass zusätzlich durch den in das Mittelloch des Metallbandcoils eingeführten aufblasbaren Körper sowie dessen Dilatation mittels Pressluft in Verbindung mit dem Lasthebemagnet eine einfach bedienbare und zuverlässige Hebe- und Transportvorrichtung geschaffen ist.Preferably the method is applied in the context of a device which has a Lifting magnet has, so in addition by the in the center hole of the metal band coil introduced inflatable body and its dilation by means of compressed air in conjunction with the Lifting magnet an easy-to-use and reliable lifting and transport device is provided.

Das erfindungsgemäße Verfahren sowie die Vorrichtung werden anhand von Zeichnungen im Weiteren näher erläutert. Es zeigen:The inventive method as well as the device will become apparent from drawings hereinafter explained in more detail. It demonstrate:

1a und 2 jeweils gewickelte Metallbandcoils in verschiedenen Ansichten mit eingeführter aufblasbarer Spreizvorrichtung. 1a and 2 each wound metal band coils in different views with inserted inflatable spreading device.

1b eine Prinzipskizze eines Teils des um ein Mittelloch 11 gewickeltes Metallbandes. 1b a schematic diagram of a part of a center hole 11 wrapped metal band.

Der Coil 10 besteht aus einem spiralförmig gewickelten Band 17, das an seinem Außendurchmesser über einzelne Spannbänder gehalten wird. Dieses Coil besitzt ein Mittelloch 11, das von der Innenfläche 12 begrenzt wird.The coil 10 consists of a spiral wound band 17 , which is held at its outer diameter via individual straps. This coil has a center hole 11 that of the In inner face 12 is limited.

1b zeigt 3 von mehreren Wicklungen des Metallbandes; diese 3 Wicklungen liegen um ein Mittelloch 11 und können bei Fertigungs- und Wickelfehlern dazu führen, dass sich zwischen den dargestellten Stirnseiten der Kanten und einem aufgesetzten Magnet-Polschuh ein Luftspalt bildet, der dann dazu führen kann, dass die inneren Wicklungen schwerkraftbedingt nach unten herausrutschen. Um dies zu verhindern wird erfindungsgemäß in dieses Mittelloch entsprechend der schematischen Darstellung ein schlauchartiger Körper 13 eingeführt, der aus einem aufblasbaren Material besteht. Über eine Zuleitung 14 wird Pressluft eingeblasen, welche zu einer radialen Expansion dieses schlauchartigen Körpers führt, so dass sich dessen Außenmantel an die Innenwandung 12 anlegt. Hierdurch werden die Metallbandwicklungen druckbeaufschlagt, was dazu führt, dass die einzelnen spiralartig aufeinander gewickelten Lagen aneinander gepresst werden. Die in 2 angedeutete Wickelachse 15 steht vertikal, so dass auf die stirnseitige Ringfläche 16 nunmehr ein Lasthebemagnet aufgesetzt und der Coil 10 angehoben werden kann. Die Spreizvorrichtung 13 kann auch als Teil eines Trägerkörpers ausgebildet sein, an dem Magnete befestigt sind. Mit dem Absenken des Trägerkörpers auf das Coil mit vertikal gestellter Wickelachse wird der Dorn in das Mittelloch eingefügt und gespreizt. 1b shows 3 of several windings of the metal strip; These 3 windings are around a center hole 11 and can lead to manufacturing and winding defects that forms an air gap between the illustrated end faces of the edges and an attached magnetic pole piece, which can then cause the inner windings slip out due to gravity down. To prevent this is inventively in this center hole according to the schematic representation of a hose-like body 13 introduced, which consists of an inflatable material. Via a supply line 14 compressed air is injected, which leads to a radial expansion of this hose-like body, so that its outer jacket to the inner wall 12 invests. As a result, the metal strip windings are pressurized, which results in that the individual spirally wound layers are pressed together. In the 2 indicated winding axis 15 is vertical, so that on the frontal ring surface 16 now put on a lifting magnet and the coil 10 can be raised. The spreading device 13 may also be formed as part of a carrier body, are attached to the magnets. With the lowering of the carrier body on the coil with vertical winding axis of the mandrel is inserted and spread in the center hole.

Claims (4)

Verfahren zur Fixierung der Wicklungen eines Metallbandcoils während eines Anhebens oder Transportierens, dadurch gekennzeichnet, dass in das Mittelloch (11) eine Spreizvorrichtung (13) eingeführt und so aufgespreizt wird, dass auf die inneren Wicklungen ein Druck ausgeübt wird.Method for fixing the windings of a metal strip coil during a lifting or transporting, characterized in that in the center hole ( 11 ) a spreading device ( 13 ) is introduced and spread so that a pressure is exerted on the inner windings. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Spreizvorrichtung (13) ein aufblasbarer Körper mit flexiblen Außenwänden ist.Method according to claim 1, characterized in that the spreading device ( 13 ) is an inflatable body with flexible outer walls. Vorrichtung zum Heben und Transportieren von Metallbandcoils, mit einem Lasthebemagnet, gekennzeichnet durch einen in das Mittelloch (11) eines Metallbandcoils (10) einführbaren aufblasbaren Körper (13).Device for lifting and transporting metal strip coils, with a lifting magnet, characterized by a in the center hole ( 11 ) of a metal strip coil ( 10 ) insertable inflatable body ( 13 ). Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass der aufblasbare Körper mittels Pressluft füllbar ist.Device according to claim 3, characterized in that that the inflatable body can be filled by means of compressed air is.
DE102006006010A 2006-02-08 2006-02-08 Method for fixing the windings of a metal strip coil and device for lifting and transporting metal strip coils Withdrawn DE102006006010A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE102006006010A DE102006006010A1 (en) 2006-02-08 2006-02-08 Method for fixing the windings of a metal strip coil and device for lifting and transporting metal strip coils
AT07711138T ATE460237T1 (en) 2006-02-08 2007-01-13 METHOD FOR FIXING THE WINDINGS OF A METAL TAPE COIL AND DEVICE FOR LIFTING AND TRANSPORTING METAL TAPE COILS
DE502007003079T DE502007003079D1 (en) 2006-02-08 2007-01-13 METHOD FOR FIXING THE WINDINGS OF A METAL BAND COIL AND DEVICE FOR LIFTING AND TRANSPORTING METAL BAND COILS
EP07711138A EP1981661B1 (en) 2006-02-08 2007-01-13 Method of fixing the windings of a metal strip coil and device for lifting and transporting metal strip coils
PCT/DE2007/000042 WO2007090360A1 (en) 2006-02-08 2007-01-13 Method of fixing the windings of a metal strip coil and device for lifting and transporting metal strip coils

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006006010A DE102006006010A1 (en) 2006-02-08 2006-02-08 Method for fixing the windings of a metal strip coil and device for lifting and transporting metal strip coils

Publications (1)

Publication Number Publication Date
DE102006006010A1 true DE102006006010A1 (en) 2007-08-09

Family

ID=37969661

Family Applications (2)

Application Number Title Priority Date Filing Date
DE102006006010A Withdrawn DE102006006010A1 (en) 2006-02-08 2006-02-08 Method for fixing the windings of a metal strip coil and device for lifting and transporting metal strip coils
DE502007003079T Active DE502007003079D1 (en) 2006-02-08 2007-01-13 METHOD FOR FIXING THE WINDINGS OF A METAL BAND COIL AND DEVICE FOR LIFTING AND TRANSPORTING METAL BAND COILS

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE502007003079T Active DE502007003079D1 (en) 2006-02-08 2007-01-13 METHOD FOR FIXING THE WINDINGS OF A METAL BAND COIL AND DEVICE FOR LIFTING AND TRANSPORTING METAL BAND COILS

Country Status (4)

Country Link
EP (1) EP1981661B1 (en)
AT (1) ATE460237T1 (en)
DE (2) DE102006006010A1 (en)
WO (1) WO2007090360A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2328296A1 (en) * 1972-06-03 1973-12-13 Lucas Electrical Co Ltd WORKPIECE HANDLING DEVICE
US4173368A (en) * 1978-05-01 1979-11-06 The Lodge & Shipley Company Apparatus for frictionally gripping the interior surface of a container during handling by an article transferring means
US4273505A (en) * 1978-09-22 1981-06-16 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Pneumatic inflatable end effector
DE19531513A1 (en) * 1995-08-26 1997-02-27 Betr Forsch Inst Angew Forsch Electric load lifting magnet e.g. for lifting rolled steel coils in iron and steel industry

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2752191A (en) * 1953-08-13 1956-06-26 Nat Standard Co Coil lifter
FR2671499B3 (en) * 1991-01-16 1992-12-31 Sollac DEVICE FOR EXTRACTING A HOLLOW MEMBER INSERTED IN A HOUSING.
DE19911897B4 (en) * 1999-03-17 2008-02-21 Woko Gmbh Load magnet
DE102005022058B4 (en) * 2004-06-14 2007-03-08 Eberhard, Manfred M. coil tongs

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2328296A1 (en) * 1972-06-03 1973-12-13 Lucas Electrical Co Ltd WORKPIECE HANDLING DEVICE
US4173368A (en) * 1978-05-01 1979-11-06 The Lodge & Shipley Company Apparatus for frictionally gripping the interior surface of a container during handling by an article transferring means
US4273505A (en) * 1978-09-22 1981-06-16 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Pneumatic inflatable end effector
DE19531513A1 (en) * 1995-08-26 1997-02-27 Betr Forsch Inst Angew Forsch Electric load lifting magnet e.g. for lifting rolled steel coils in iron and steel industry

Also Published As

Publication number Publication date
DE502007003079D1 (en) 2010-04-22
ATE460237T1 (en) 2010-03-15
EP1981661B1 (en) 2010-03-10
WO2007090360A1 (en) 2007-08-16
EP1981661A1 (en) 2008-10-22

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Effective date: 20110901