EP1904701B1 - Door handle and method for producing a door handle housing - Google Patents

Door handle and method for producing a door handle housing Download PDF

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Publication number
EP1904701B1
EP1904701B1 EP06764027A EP06764027A EP1904701B1 EP 1904701 B1 EP1904701 B1 EP 1904701B1 EP 06764027 A EP06764027 A EP 06764027A EP 06764027 A EP06764027 A EP 06764027A EP 1904701 B1 EP1904701 B1 EP 1904701B1
Authority
EP
European Patent Office
Prior art keywords
coating
door handle
antenna coil
break
housing
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.)
Not-in-force
Application number
EP06764027A
Other languages
German (de)
French (fr)
Other versions
EP1904701A1 (en
Inventor
Martin Witte
Stefan Neuhoff
Mirko Schindler
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.)
Huf Huelsbeck and Fuerst GmbH and Co KG
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Huf Huelsbeck and Fuerst GmbH and Co KG
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 Huf Huelsbeck and Fuerst GmbH and Co KG filed Critical Huf Huelsbeck and Fuerst GmbH and Co KG
Publication of EP1904701A1 publication Critical patent/EP1904701A1/en
Application granted granted Critical
Publication of EP1904701B1 publication Critical patent/EP1904701B1/en
Not-in-force legal-status Critical Current
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/32—Adaptation for use in or on road or rail vehicles
    • H01Q1/3208—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used
    • H01Q1/3233—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems
    • H01Q1/3241—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems particular used in keyless entry systems
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00—Power-actuated vehicle locks
    • E05B81/54—Electrical circuits
    • E05B81/64—Monitoring or sensing, e.g. by using switches or sensors
    • E05B81/76—Detection of handle operation; Detection of a user approaching a handle; Electrical switching actions performed by door handles
    • E05B81/78—Detection of handle operation; Detection of a user approaching a handle; Electrical switching actions performed by door handles as part of a hands-free locking or unlocking operation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/362—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith for broadside radiating helical antennas

Definitions

  • door handles for motor vehicles are mainly made of electrically non-conductive material, preferably made of plastic.
  • an antenna coil is integrated into the door handle for communication with an ID transmitter.
  • the modern trend of the automotive industry is to chrome again the door handles, as it was formerly common practice.
  • the invention has for its object to provide a way to still chrome door handles with integrated antenna coil.
  • the winding axis of the antenna coil can basically be oriented arbitrarily.
  • the antenna coil which preferably contains a ferrite core, aligned with its axis approximately in the longitudinal direction of the door handle, so that their winding planes are transverse to the longitudinal direction of the door handle.
  • the invention further provides a door handle housing of electrically non-conductive material, preferably of plastic, having a cavity for receiving an antenna coil and having an outer coating of electrically conductive material, wherein the coating has an interruption, the the formation of a closed, the antenna coil transverse to the winding axis rotating electrical Leitpfades prevented.

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Lock And Its Accessories (AREA)

Abstract

The invention relates to a door handle for motor vehicles, comprising a plastic housing and an antenna coil (3), arranged in the housing, for communicating with an ID transmitter. The door handle is provided with a chromium coating (1). Said coating (1) has at least one discontinuity (4) which prevents the formation of a closed electrically conducting path that extends around the antenna coil (3) at an angle to the coil axis.

Description

Die Erfindung betrifft einen Türgriff, vorzugsweise für Kraftfahrzeuge, sowie ein Verfahren zur Herstellung eines Türgriff-Gehäuses.The invention relates to a door handle, preferably for motor vehicles, and to a method for producing a door handle housing.

Heutzutage werden Türgriffe für Kraftfahrzeuge überwiegend aus elektrisch nicht leitendem Material, vorzugsweise aus Kunststoff gefertigt. Vielfach wird in den Türgriff eine Antennenspule zur Kommunikation mit einem ID-Geber integriert. Der moderne Trend der Kraftfahrzeugindustrie geht dahin, die Türgriffe wieder zu verchromen, wie es frührer allgemein üblich war.Nowadays door handles for motor vehicles are mainly made of electrically non-conductive material, preferably made of plastic. In many cases, an antenna coil is integrated into the door handle for communication with an ID transmitter. The modern trend of the automotive industry is to chrome again the door handles, as it was formerly common practice.

Da die Antennenspule mit einer Frequenz von größenordnungsmäßig 125 kHz, also langwellig arbeitet, hat sich bisher eine Verchromung verboten, da die elektrisch leitende Chrom-Beschichtung eine im wesentlichen vollständig geschlossene Hülle bildet, die die Antennenspule abschirmt.Since the antenna coil operates at a frequency of the order of 125 kHz, ie long-wave, chromium plating has hitherto been prohibited, since the electrically conductive chromium coating forms a substantially completely closed envelope which shields the antenna coil.

Der Erfindung liegt die Aufgabe zugrunde, eine Möglichkeit dafür zu schaffen, Türgriffe mit integrierter Antennenspule dennoch zu verchromen.The invention has for its object to provide a way to still chrome door handles with integrated antenna coil.

Zur Lösung dieser Aufgabe schafft die Erfindung einen Türgriff, vorzugsweise für Kraftfahrzeuge, mit einem Gehäuse aus elektrisch nicht leitendem Material, vorzugsweise aus Kunststoff, und mit einer in dem Gehäuse angeordneten Antennenspule zur Kommunikation mit einem ID-Geber oder dergleichen, wobei der Türgriff eine Beschichtung aus elektrisch leitendem Material trägt und wobei die Beschichtung mindestens eine Unterbrechung aufweist, die die Ausbildung eines geschlossenen, die Antennenspule quer zu deren Windungsachse umlaufenden elektrischen Leitpfades verhindert.To achieve this object, the invention provides a door handle, preferably for motor vehicles, with a housing made of electrically non-conductive material, preferably of plastic, and arranged in the housing antenna coil for communication with an ID transmitter or the like, wherein the door handle a coating of electrically conductive material and wherein the coating has at least one interruption, which prevents the formation of a closed, the antenna coil transverse to the coil axis of the electrical conduction path.

Die Unterbrechung der elektrisch leitfähigen Beschichtung hebt deren Abschirmwirkung gegenüber der Antennenspule auf. Die Kommunikation der Antennenspule mit dem ID-Geber wird also nicht mehr behindert.The interruption of the electrically conductive coating abolishes its shielding effect with respect to the antenna coil. The communication of the antenna coil with the ID transmitter is therefore no longer hindered.

Hauptanwendungsgebiet der Erfindung ist die Kraftfahrzeugindustrie. Allerdings kann die Erfindung allgemein überall dort Anwendung finden, wo eine langwellig arbeitende Antennenspule in ein Bauteil integriert wird, welches aus elektrisch nicht leitendem Material besteht und mit einer elektrisch leitenden Beschichtung versehen ist. Verwiesen sei beispielsweise auf Griffe von Garagentoren und dergleichen.Main field of application of the invention is the automotive industry. However, the invention can generally be found everywhere where a long-wave antenna coil is integrated into a component which consists of electrically non-conductive material and is provided with an electrically conductive coating. For example, reference is made to handles of garage doors and the like.

Aus optischen Gründen besteht die Beschichtung vorzugsweise aus Chrom. Allerdings kommen auch andere elektrisch leitende Materialien in Frage, beispielsweise glänzende Kupferlegierungen und dergleichen.For optical reasons, the coating is preferably made of chromium. However, other electrically conductive materials come into question, for example, shiny copper alloys and the like.

Bei einer Ausführungsform bildet die Unterbrechung eine Rinne mit einer Breite von vorzugsweise 0,3 mm bis 3 mm. Eine derartige Rinne kann sich unter Umständen negativ auf das Griffgefühl auswirken. Dem läßt sich dadurch begegnen, daß man die Beschichtung an den Rändern der Unterbrechung abflacht. Alternativ besteht die Möglichkeit, die Unterbrechung der Beschichtung mit elektrisch nicht leitendem Material auszufüllen. Ferner kommt auch eine Abdeckung der Rinne in Frage. Der Verlauf der Rinne ist grundsätzlich beliebig, vorzugsweise allerdings geradlinig.In one embodiment, the interruption forms a groove having a width of preferably 0.3 mm to 3 mm. Such a channel can possibly have a negative effect on the feel of the handle. This can be countered by flattening the coating at the edges of the interruption. Alternatively, it is possible to fill the interruption of the coating with electrically non-conductive material. Furthermore, a cover of the channel comes into question. The course of the channel is basically arbitrary, but preferably straight.

Die Windungsachse der Antennenspule kann grundsätzlich beliebig orientiert sein. Vorwiegend allerdings wird die Antennenspule, die vorzugsweise einen Ferritkern enthält, mit ihrer Achse etwa in Längsrichtung des Türgriffs ausgerichtet, so daß also ihre Windungsebenen quer zur Längsrichtung des Türgriffs liegen. Für diesen Fall wird in Weiterbildung der Erfindung vorgeschlagen, die Unterbrechung der Beschichtung in Längsrichtung des Türgriffs verlaufen zu lassen. Dabei kann es aus optischen und grifftechnischen Gründen vorteilhaft sein, daß die Unterbrechung der Beschichtung auf der Innenseite des Türgriffs verläuft.The winding axis of the antenna coil can basically be oriented arbitrarily. Mostly, however, the antenna coil, which preferably contains a ferrite core, aligned with its axis approximately in the longitudinal direction of the door handle, so that their winding planes are transverse to the longitudinal direction of the door handle. For this case, it is proposed in a further development of the invention to allow the interruption of the coating to extend in the longitudinal direction of the door handle. It may be advantageous for optical and handle technical reasons that the interruption of the coating extends on the inside of the door handle.

Die Erfindung schafft ferner ein Türgriff-Gehäuse aus elektrisch nicht leitendem Material, vorzugsweise aus Kunststoff, mit einem Hohlraum zur Aufnahme einer Antennenspule und mit einer äußeren Beschichtung aus elektrisch leitendem Material, wobei die Beschichtung eine Unterbrechung aufweist, die die Ausbildung eines geschlossenen, die Antennenspule quer zu deren Windungsachse umlaufenden elektrischen Leitpfades verhindert. Die mit der Erfindung erzielten Vorteile ergeben sich aus der vorstehenden Beschreibung.The invention further provides a door handle housing of electrically non-conductive material, preferably of plastic, having a cavity for receiving an antenna coil and having an outer coating of electrically conductive material, wherein the coating has an interruption, the the formation of a closed, the antenna coil transverse to the winding axis rotating electrical Leitpfades prevented. The advantages achieved by the invention will become apparent from the foregoing description.

Grundsätzlich kann die Unterbrechung der elektrisch leitenden Beschichtung nachträglich erzeugt werden, beispielsweise durch spanabhebende Bearbeitung oder durch Laserstrahlung. Vorteilhafter ist es unter Umständen, im Bereich der Unterbrechung das Entstehen der Beschichtung zu verhindern.In principle, the interruption of the electrically conductive coating can be subsequently produced, for example by machining or by laser radiation. Under certain circumstances, it may be more advantageous to prevent the formation of the coating in the region of the interruption.

Hierzu schafft die Erfindung in einer bevorzugten Ausführungsform ein Verfahren zum Aufbringen einer äußeren Beschichtung aus elektrisch leitendem Material auf ein Türgriff-Gehäuse aus elektrisch nicht leitendem Material, vorzugsweise aus Kunststoff, wobei das Gehäuse einen Hohlraum zur Aufnahme einer Antennenspule aufweist und wobei eine Leitschicht auf das Gehäuse aufgebracht und die Beschichtung elektrolytisch auf die Leitschicht aufgebracht wird, welches dadurch gekennzeichnet ist, daß die Leitschicht vor dem Aufbringen der Beschichtung mit einer Unterbrechung versehen wird, die die Ausbildung eines geschlossenen, die Antennenspule quer zu deren Windungsachse umlaufenden elektrischen Leitpfades verhindert.For this purpose, the invention provides in a preferred embodiment, a method for applying an outer coating of electrically conductive material on a door handle housing made of electrically non-conductive material, preferably made of plastic, wherein the housing has a cavity for receiving an antenna coil and wherein a conductive layer on the Housing applied and the coating is applied electrolytically to the conductive layer, which is characterized in that the conductive layer is provided prior to the application of the coating with a break, which prevents the formation of a closed, the antenna coil transverse to the coil axis of electrical conduction path.

Die Leitschicht bildet die Basis für den elektrolytischen Auftrag der wesentlich dickeren Beschichtung. Die Leitschicht besteht vorzugsweise aus Palladium und wird beispielsweise chemisch auf das Gehäuse aufgebracht. Andere Materialien, die neben ihrer elektrischen Leitfähigkeit entsprechende Haftungseigenschaften besitzen, kommen ebenfalls in Frage. Der Auftrag der Leitschicht muß nicht chemisch erfolgen. Auch mechanische Verfahren kommen in Frage, beispielsweise Sputtern oder Aufdampfen.The conductive layer forms the basis for the electrolytic application of the much thicker coating. The conductive layer is preferably made of palladium and is applied, for example chemically to the housing. Other materials which have corresponding adhesion properties in addition to their electrical conductivity are also suitable. The order of the conductive layer does not have to be chemical. Mechanical processes are also possible, for example sputtering or vapor deposition.

Die Unterbrechung der Leitschicht wird vorzugsweise durch Laserstrahlen oder aber auch spanabhebend erzeugt. Alternativ dazu besteht die Möglichkeit, die Leitschicht im Bereich der Unterbrechung mit einer Abdeckung, beispielsweise mit einem Abdecklack zu versehen, der das Aufwachsen der Beschichtung in diesem Bereich unterbindet. Nach dem Entfernen der Abdeckung kann die in der Unterbrechung verbliebene Leitschicht beispielsweise weggeätzt werden.The interruption of the conductive layer is preferably produced by laser beams or else by machining. Alternatively, it is possible to provide the conductive layer in the region of the interruption with a cover, for example with a covering paint, which prevents the growth of the coating in this area. After removing the cover For example, the conductive layer remaining in the interruption can be etched away.

Die Erfindung wird im folgenden anhand eines bevorzugten Ausführungsbeispiels im Zusammenhang mit der beiliegenden Zeichnung näher erläutert. Die Zeichnung zeigt in:

  • Figur 1 einen Türgriff für ein Kraftfahrzeug, gesehen von der Innenseite aus.
The invention will be explained in more detail below with reference to a preferred embodiment in conjunction with the accompanying drawings. The drawing shows in:
  • FIG. 1 a door handle for a motor vehicle, seen from the inside.

Der Türgriff weist ein Gehäuse aus Kunststoff auf, welches eine Chrom-Beschichtung trägt. Innerhalb des Gehäuses ist ein Hohlraum 2 vorgesehen, der eine Ferritkern-Antennenspule 3 enthält. Die Windungsachse der Antennenspule 3 liegt quer zur Längsrichtung des Türgriffs.The door handle has a plastic housing which carries a chrome coating. Within the housing, a cavity 2 is provided, which contains a ferrite core antenna coil 3. The winding axis of the antenna coil 3 is transverse to the longitudinal direction of the door handle.

Um einen geschlossenen elektrischen Leitpfad quer zur Windungsachse rund um die Antennenspule 3 zu verhindern, weist die Beschichtung 1 eine geradlinige Unterbrechung 4 auf, die sich in Längsrichtung des Türgriffs erstreckt.In order to prevent a closed electrical conduction path transverse to the winding axis around the antenna coil 3, the coating 1 has a rectilinear interruption 4 which extends in the longitudinal direction of the door handle.

Unterhalb der Chrom-Beschichtung befindet sich eine chemisch auf das Gehäuse aufgebracht Palladium-Schicht, die im Bereich der Unterbrechung 4 durch Laserstrahlen abgetragen worden ist, um im Bereich der Unterbrechung 4 das elektrolytische Aufwachsen der Chrom-Beschichtung 1 zu verhindern.Below the chromium coating, there is a palladium layer chemically deposited on the housing, which has been removed by laser beams in the region of the interruption 4, in order to prevent the electrolytic growth of the chromium coating 1 in the region of the interruption 4.

Im Rahmen der Erfindung sind durchaus Abwandlungsmöglichkeiten gegeben, und zwar sowohl bezüglich des Materials des Gehäuses als auch bezüglich des Materials der Beschichtung. Ferner muß die Beschichtung nicht unter Zwischenschaltung einer Palladium-Schicht aufgebracht werden. Auch kann die Unterbrechung der Beschichtung nachträglich durch spanabhebende Bearbeitung oder durch Laserstrahlen erzeugt werden. Die Unterbrechung, deren Breite im Falle des Ausführungsbeispiels 3 mm beträgt, kann mit elektrisch nicht leitendem Material ausgefüllt sein. Alternativ kann die Beschichtung an den Rändern der Unterbrechung abgeflacht sein.In the context of the invention are quite Abwandlungsmöglichkeiten given, both with respect to the material of the housing as well as with respect to the material of the coating. Furthermore, the coating does not have to be applied with the interposition of a palladium layer. Also, the interruption of the coating can be subsequently produced by machining or by laser beams. The interruption, whose width is 3 mm in the case of the embodiment, can be filled with electrically non-conductive material. Alternatively, the coating may be flattened at the edges of the break.

Claims (10)

  1. Door handle, preferably for motor vehicles, with a housing made from electrically non-conductive material, preferably from plastics materials, and with an antenna coil (3) disposed in the housing for communication with an ID transmitter or the like, characterised in that the door handle has a coating (1) made from electrically conductive material and that the coating (1) has at least one break (4) which prevents the formation of a closed electrical conductive path which runs around the antenna coil (3) transversely with respect to the winding axis thereof.
  2. Door handle as claimed in Claim 1, characterised in that the coating (1) is flattened at the edges of the break (4).
  3. Door handle as claimed in Claim 1, characterised in that the break (4) in the coating (1) is filled with electrically non-conductive material.
  4. Door handle as claimed in any one of Claims 1 to 3, characterised in that the winding axis of the antenna coil (3) lies in the longitudinal direction of the door handle and that the break (4) in the coating (1) extends in the longitudinal direction of the door handle.
  5. Door handle as claimed in Claim 4, characterised in that the break (4) in the coating (1) extends on the inner face of the door handle.
  6. Door handle housing made from electrically non-conductive material, preferably made from plastics material, with a cavity (2) to receive an antenna coil (3), characterised by an outer coating (1) made from electrically conductive material, wherein the coating (1) has a break (4) which prevents the formation of a closed electrical conductive path which runs around the antenna coil (3) transversely with respect to the winding axis thereof.
  7. Method of applying an outer coating (1) made from electrically conductive material to a door handle housing made from electrically non-conductive material, preferably made from plastics, material, wherein the housing has a cavity (2) to receive an antenna coil (3), wherein a conductive layer is applied to the housing and the coating (1) is applied electrolytically to the conductive layer, characterised in that the coating (1) is provided with a break which prevents the formation of a closed electrical conductive path which runs round the antenna coil (3) transversely with respect to the winding axis thereof.
  8. Method as claimed in Claim 7, characterised in that the conductive layer is removed in the region of the break before the application of the coating.
  9. Method as claimed in Claim 8, characterised in that the conductive layer is removed by laser beams in the region of the break.
  10. Method as claimed in Claim 7, characterised in that the conductive layer is covered in the region of the break during the application of the coating and is removed thereafter.
EP06764027A 2005-07-04 2006-07-03 Door handle and method for producing a door handle housing Not-in-force EP1904701B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005031453A DE102005031453A1 (en) 2005-07-04 2005-07-04 Door handle and method of making a door handle housing
PCT/EP2006/063817 WO2007003631A1 (en) 2005-07-04 2006-07-03 Door handle and method for producing a door handle housing

Publications (2)

Publication Number Publication Date
EP1904701A1 EP1904701A1 (en) 2008-04-02
EP1904701B1 true EP1904701B1 (en) 2009-01-07

Family

ID=37420840

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06764027A Not-in-force EP1904701B1 (en) 2005-07-04 2006-07-03 Door handle and method for producing a door handle housing

Country Status (5)

Country Link
EP (1) EP1904701B1 (en)
CN (1) CN101218403B (en)
AT (1) ATE420259T1 (en)
DE (2) DE102005031453A1 (en)
WO (1) WO2007003631A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013101994A1 (en) 2013-02-28 2014-08-28 Huf Hülsbeck & Fürst Gmbh & Co. Kg Motor vehicle door handle with antenna arrangement
DE102018221971A1 (en) * 2018-12-17 2020-06-18 Psa Automobiles Sa Motor vehicle transmitter and / or receiver unit

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3509790B2 (en) * 2000-08-09 2004-03-22 アイシン精機株式会社 Vehicle door lock device
DE10065156C1 (en) * 2000-12-23 2002-02-21 Huf Huelsbeck & Fuerst Gmbh Production of deluxe, metal-plated car door handles, comprises applying a series of metal layers by mixture of plasma coating and electroplating to a standard plastic molded door handle
DE10163778B4 (en) * 2001-06-27 2008-01-24 Witte-Velbert Gmbh & Co. Kg Handle with integrated antenna and sensor electrode
FR2830999B1 (en) * 2001-10-11 2004-11-05 Valeo Electronique HOUSING FOR CONTAINING A CAPACITIVE SENSOR AND MOTOR VEHICLE OPENING HANDLE
DE10212794A1 (en) * 2001-12-12 2003-06-26 Witte Velbert Gmbh & Co Kg Plastic injection molded component, e.g. a vehicle door handle, comprises a pre-finished module which holds electrical components and which is surrounded by a soft plastic mantle
JP4342207B2 (en) * 2003-04-22 2009-10-14 アイシン精機株式会社 Vehicle door handle device
DE102004061092A1 (en) * 2004-07-13 2006-02-09 Witte-Velbert Gmbh & Co. Kg Automobile door handle is of metal coated plastic coupled to an embedded antenna for use in transmission and reception of signals

Also Published As

Publication number Publication date
DE102005031453A1 (en) 2007-01-18
WO2007003631A1 (en) 2007-01-11
DE502006002602D1 (en) 2009-02-26
CN101218403A (en) 2008-07-09
EP1904701A1 (en) 2008-04-02
CN101218403B (en) 2011-09-07
ATE420259T1 (en) 2009-01-15

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