EP1304436B1 - Türschloss, insbesondere für Haushaltsgeräte - Google Patents

Türschloss, insbesondere für Haushaltsgeräte Download PDF

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Publication number
EP1304436B1
EP1304436B1 EP02023459A EP02023459A EP1304436B1 EP 1304436 B1 EP1304436 B1 EP 1304436B1 EP 02023459 A EP02023459 A EP 02023459A EP 02023459 A EP02023459 A EP 02023459A EP 1304436 B1 EP1304436 B1 EP 1304436B1
Authority
EP
European Patent Office
Prior art keywords
door
cam member
hook
support structure
lock
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.)
Expired - Fee Related
Application number
EP02023459A
Other languages
English (en)
French (fr)
Other versions
EP1304436A3 (de
EP1304436A2 (de
Inventor
Fabrizio Promutico
Gianni Scarsella
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.)
Bitron SpA
Original Assignee
Bitron SpA
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 Bitron SpA filed Critical Bitron SpA
Publication of EP1304436A2 publication Critical patent/EP1304436A2/de
Publication of EP1304436A3 publication Critical patent/EP1304436A3/de
Application granted granted Critical
Publication of EP1304436B1 publication Critical patent/EP1304436B1/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C3/00—Fastening devices with bolts moving pivotally or rotatively
    • E05C3/12—Fastening devices with bolts moving pivotally or rotatively with latching action
    • E05C3/16—Fastening devices with bolts moving pivotally or rotatively with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch
    • E05C3/22—Fastening devices with bolts moving pivotally or rotatively with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch the bolt being spring controlled
    • E05C3/24—Fastening devices with bolts moving pivotally or rotatively with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch the bolt being spring controlled in the form of a bifurcated member
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/42—Safety arrangements, e.g. for stopping rotation of the receptacle upon opening of the casing door
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/12—Casings; Tubs
    • D06F39/14—Doors or covers; Securing means therefor
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C5/00—Fastening devices with bolts moving otherwise than only rectilinearly and only pivotally or rotatively
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
    • E05B15/0086—Toggle levers
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00—Accessories in connection with locks
    • E05B17/0025—Devices for forcing the wing firmly against its seat or to initiate the opening of the wing

Definitions

  • the present invention relates to a door-lock device according to the preamble of claim 1, particularly for household appliances, such as washing machines and/or tumble-driers.
  • DE-A 19504796 discloses such a device including a toggle mechanism cooperating with a manually-operable handle.
  • the object of the present invention is to provide an improved door-lock which has a structure that is fairly simple and easy to produce and which is very reliable in operation.
  • the door-lock comprises a substantially box-shaped support structure 2 which is shown partially sectioned in Figure 1.
  • the support structure 2 has a side wall 2a in which there is formed an opening 3 which, as will become clear from the following description with reference to Figures 2 to 6, is intended to allow a hook 4 connected to a door 5 (shown only partially in Figures 2 to 6) of a household appliance to be inserted in the structure.
  • the door-lock 1 is intended to be mounted in the structure 6 of a household appliance with the opening 3 facing and aligned with a corresponding opening 7 of the structure ( Figures 2 et seq. ).
  • a locking device of a per se known type is connected to the outer face of the wall 2a of the structure 2.
  • This device comprises, in particular, a locking member 10 which is translatable (vertically as seen in Figures 2 et seq. ) and is aligned with the opening 8 in the wall 2a.
  • the member 10 can adopt a retracted, rest position ( Figures 2 to 4) in which it does not project beyond the wall 2a, and an extended, working or locking position ( Figures 5 and 6) in which it projects through and beyond the opening 8 in the wall 2a.
  • the support structure 2 comprises two further walls 2b, 2c, which face one another.
  • a substantially straight channel 11 is formed in the wall 2b, substantially parallel to the axis of the opening 3.
  • a further straight channel 12 is formed in the facing wall 2c, parallel to and facing the channel 11 ( Figure 1).
  • a pin which is mounted so as to be translatable along the channels 11 and 12 is indicated 13.
  • a cam member 14, as well as a first end of a lever 15 which forms part of a toggle mechanism generally indicated 16, are mounted rotatably on the pin.
  • the mechanism also comprises a slide member 17, articulated to the other end of the lever 15 at 18. This slide member 17 is translatable in the support structure 2 along a direction (horizontal as seen in Figures 2 to 6) substantially perpendicular to the direction of sliding of the pin 13.
  • the toggle mechanism 16 further comprises a connecting element or tie 19 having one end articulated pivotably on the pin 13, its other end being provided with a transverse element 19a mounted so as to be translatable in a central longitudinal slot 20 of the slide member 17 ( Figures 2 to 6).
  • the mechanism 16 also comprises a helical spring 21 housed in an outer shell portion of the slide member 17 and reacting, at one end, against the end of the slide member which is articulated to the lever 15 and, at the opposite end, against the transverse element 19a of the connecting member or tie 19.
  • the pin 18 of the articulation between the lever 15 and the connection element or tie 19 is surrounded by an idle wheel 22 ( Figures 2 et seq. ) which can run or roll on the flat end surface of an internal projection 23 of the wall 2a of the support structure 2.
  • the slide member 17 has an outer transverse projection 24 for cooperating with the movable member 10 of the locking device 9 in the manner which will be described below.
  • a fixed stop pin 25 extends in the support structure 2, between the walls 2b and 2c, adjacent the channels 11 and 12.
  • the stop pin 25 is intended to cooperate with the cam member 14 in the manner which will be described below.
  • the cam member 14 has a curved peripheral reaction profile 14a which, in the embodiment shown, has an angular amplitude of approximately 240°. This reaction profile extends between two recesses or notches of the cam member, indicated 14b and 14c, respectively.
  • the second notch 14c has a substantially radial wall, indicated 14d, adjacent the reaction profile 14a.
  • the notch 14b of the cam member 14 can house the distal portion 4a of the hook-shaped member 4 ( Figures 3 et seq. ).
  • the recess or notch 14c of the cam member 14, on the other hand, can house the stop pin 25, as can be seen, for example, in Figures 4 and 5.
  • a torsion spring 26, associated with the cam member 14, is arranged around the pin 13 and tends to keep the cam member 14 in the rest angular position shown in Figure 2.
  • FIG. 2 shows the door-lock 1 in the rest condition.
  • the cam member 14 is adjacent the opening 3 and its reaction profile 14a bears against the stop pin 25.
  • the notch 14b of the cam member has its radially outermost portion facing the opening 3 so that the notch can receive the end portion 4a of the hook-like member 4.
  • the lever 15 and the slide member 17 are arranged in an almost fully opened-out relative position.
  • the spring 21 helps to hold the cam member 14 against the stop pin 25.
  • the door 5 of the domestic appliance can still optionally be opened either from outside or from inside the domestic appliance (child safety).
  • the movable member 10 of the device When the door is closed, if the locking device 9 is activated (for example, by setting the domestic appliance in operation) the movable member 10 of the device can be brought to the extended position shown in Figures 5 and 6 in which it projects beyond the wall 2a of the support structure 2 of the door-lock, so as to be arranged on the return path of the projection 24 of the slide member 17. In this condition, except for possibly taking up the distance indicated d in Figure 5, the slide member 17 is prevented from returning towards the position which it occupies at rest, and the release of the hook 4 from the cam member 14 is thus prevented.
  • the door can be reopened only when the locking device has been deactivated (for example, upon completion of the operation of the domestic appliance) and the locking member 10 is returned in known manner towards its retracted position in which it does not obstruct the translation of the slide member 17.
  • a further advantageous characteristic of the device lies in the fact that a small force is sufficient to close the door.
  • a further advantage of the solution according to the invention lies in the fact that the intensity of the force necessary to open the door is substantially constant, that is, it varies very little in dependence on the opening travel. This characteristic is rendered possible by virtue of the toggle mechanism 16 and enables the force required to open the door from inside the domestic appliance to be kept at sufficiently low values, consistent with the values prescribed by the standards relating to so-called "child safety".
  • Figures 7 to 10 show a variant of the door-lock according to the invention.
  • the support structure 2 has a pair of twin arcuate walls which have their lower concave surfaces 125 facing towards the cam member 14. These walls are connected to the lower ends of the channels 11 and 12.
  • the cam member 14 has a follower pin 114a, preferably rotatable about its own axis (which is substantially parallel to that of the pin 13).
  • the pin 114a cooperates with the arcuate surfaces 125 of the support structure 2.
  • the cooperation between the pin 114a and the surfaces 125 is substantially equivalent, in its effects, to that between the arcuate profile 14a of the cam member 14 and the member 25 of the lock described above with reference to Figures 1-6.
  • toggle mechanism 16 is considerably simplified in comparison with that of Figures 1-6.
  • the lever 15 and the tie 19 are in fact eliminated and the cam member 14 bears with its convex arcuate surface 14d directly on a roller 22 mounted for rotating about a pin carried by an end of the slide member 17.
  • a tension spring 119 that is, a helical spring in the embodiment shown, is stretched between a pin 14e of the cam member 14 and a pin carried by the other end of the slide member 17.
  • the pins between which the spring 119 is stretched are substantially coplanar with the pin 13 of the cam member.
  • the cam member 14 initially rotates as a result of the interaction between its pin 114a and the surfaces 125.
  • the pin 13 of the cam member is brought clearly above the plane defined by the pins which stretch the spring 119 ( Figure 9).
  • This spring enables the torsion spring 26 of the device of Figures 1-6 to be omitted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)
  • Lock And Its Accessories (AREA)
  • Cookers (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)

Claims (10)

  1. Türverriegelungsvorrichtung (1), insbesondere für Haushaltsgeräte, umfassend:
    eine Stützstruktur (2), in welcher eine Öffnung (3) für das Einführen - in einer vorbestimmten Richtung - eines mit einer Tür (5) verbundenen, hakenartigen Glieds (4) definiert ist, und
    einen Nockenteil (14), der mit zumindest einer ersten Vertiefung oder Kerbe (14b) versehen ist,
    und der solcherart montiert ist, um in der Struktur (2) um einen Stift (13) drehbar zu sein, welcher entlang Führungsmitteln (11, 12) verschiebbar ist;
    wobei die Stützstruktur (2) und der Nockenteil (14) mit einem ersten Element (25; 125) bzw. einem zweiten Element (14a; 114a) versehen sind, welche in einer solchen Weise zusammenwirken, dass der Nockenteil (14) zu Folgendem fähig ist:
    eine Ruheposition einzunehmen, in welcher er an die Öffnung (3) angrenzt und dessen Element (14a; 114a) gegen das übereinstimmende Element (25; 125) der Stützstruktur (2) drückt und in welcher seine erste Kerbe (14b) der Öffnung (3) zugewandt und fähig ist, einen Endteil (4a) des hakenartigen Glieds (4) aufzunehmen, wenn das hakenartige Glied (4) in der Öffnung (3) eingeführt ist, und
    eine umkehrbare Dreh/Verschiebungsbewegung in Richtung einer Arbeitsposition auszuführen, und zwar infolge eines weiteren Einführens des hakenartigen Glieds (4) in die Struktur (2), in welcher Arbeitsposition das hakenartige Glied (14) an das Element (25; 125) der Stützstruktur (2) angrenzt und in der ersten Kerbe (14b) gehalten wird,
    wobei die Türverriegelung (1) weiters einen Kniehebelmechanismus (16) umfasst, welcher in der Struktur (2) montiert, mit dem Nockenteil (14) verbunden und fähig ist, eine erste Konfiguration und eine zweite Konfiguration einzunehmen, in welcher er dazu tendiert, den Nockenteil (14) in der Ruheposition bzw. in der Arbeitsposition zu halten;
    dadurch gekennzeichnet, dass
    der Stift (13) entlang der Führungsmittel (11, 12) in einer Richtung verschiebbar ist, die zur Richtung des Einführens des Hakens (4) in die Öffnung (3) im Wesentlichen parallel ist, und dass
    der Kniehebelmechanismus (16) einen Schiebeteil (17) umfasst, der dazu montiert ist, um in der Stützstruktur (2) entlang einer Achse zu gleiten, welche in einem Winkel zur Richtung des Einführens des hakenartigen Glieds (4) angeordnet ist;
    wobei die Türverriegelungsvorrichtung (1) weiters eine Verriegelungsvorrichtung (9) umfasst, die einen beweglichen Verriegelungsteil (10) inkludiert, welcher fähig ist, eine zurückgezogene Ruheposition und eine ausgefahrene Arbeitsposition einzunehmen, in welcher er dazu eingerichtet ist, den Schiebeteil (17) des Kniehebelmechanismus (16) zu behindern, um den Nockenteil (14) in der Arbeitsposition zu halten.
  2. Türverriegelung gemäß Anspruch 1, wobei das obenstehend erwähnte Element des Nockenteils (14) ein bogenförmiges peripheres Reaktionsprofil (14a) des Bauteils (14) ist und das zusammenwirkende Element der Stützstruktur (2) ein Anschlagteil (25) der Struktur (2) ist.
  3. Türverriegelung gemäß Anspruch 2, wobei der Nockenteil (14) eine zweite Vertiefung oder Kerbe (14c) aufweist und das bogenförmige Reaktionsprofil (14a) sich zwischen der ersten und der zweiten Vertiefung oder Kerbe (14b, 14c) des Nockenteils (14) erstreckt, wobei die zweite Vertiefung oder Kerbe (14c) dazu geeignet ist, in den Anschlagteil (25) der Stützstruktur (2) einzugreifen, wenn der Nockenteil (14) die Arbeitsposition einnimmt.
  4. Türverriegelung gemäß einem der vorhergehenden Ansprüche, wobei der Kniehebelmechanismus (16) Folgendes umfasst:
    einen Hebel (15) mit einem ersten Ende, das am Stift (13) des Nockenteils (14) schwenkbar ist, und wobei das andere oder zweite Ende mit dem Schiebeteil (17) gelenking verbunden ist,
    ein Verbindungselement oder Bindeglied (19), dessen erstes Ende mit dem Stift (13) gelenking verbunden ist und dessen anderes oder zweites Ende dazu montiert ist, um in der Struktur (2) entlang einer Achse zu gleiten, die zur Verschiebungsachse des Schiebeteils (17) im Wesentlichen parallel ist, und
    elastische Mittel, die zwischen dem Schiebeteil (17) und dem zweiten Ende des Verbindungselements oder Bindeglieds (19) eingeschoben sind und dazu tendieren, den Schiebeteil (17) und das zweite Ende des Verbindungselements oder Bindeglieds (19) in entgegengesetzte Richtungen zu treiben.
  5. Türverriegelung gemäß Anspruch 4, wobei das zweite Ende des Verbindungselements oder Bindeglieds (19) dazu montiert ist, um in einem Führungselement (20) des Schiebeteils (17) zu gleiten.
  6. Türverriegelung gemäß Anspruch 5, wobei die elastischen Mittel eine Schraubenfeder (21) umfassen.
  7. Türverriegelung gemäß Anspruch 1, wobei das Element des Nockenteils (14) ein Zubringerfortsatz (114a) des Bauteils ist und das zusammenwirkende Element der Stützstruktur (2) eine gebogene Fläche (125) ist.
  8. Türverriegelung gemäß Anspruch 7, wobei der Kniehebelmechanismus (16) weiters Folgendes umfasst:
    eine vom Schiebeteil (17) getragene Walze (22), die um eine Achse (18) drehbar ist, welche zur Drehachse des Nockenteils (14) im Wesentlichen parallel ist, und
    ein elastisches Element (119), dessen eines Ende mit dem Schiebeteil (17) verbunden ist und dessen anderes Ende mit dem Nockenteil (14) außermittig in einer solchen Weise verbunden ist, dass eine konvexe gebogene Fläche des Nockenteil (14) mit der Walze (22) in Kontakt gehalten wird.
  9. Türverriegelung gemäß Anspruch 8, wobei das elastische Element (119) eine Spannfeder ist.
  10. Türverriegelung gemäß einem der vorhergehenden Ansprüche, wobei der Kniehebelmechanismus (16) dazu eingerichtet ist, automatisch eine Bewegung des Nockenteils (14) in Richtung der Arbeitsposition hervorzurufen, sobald der Nockenteil (14) während des Schließens der Tür (5) über eine vorbestimmte Winkelposition hinausgeht.
EP02023459A 2001-10-22 2002-10-21 Türschloss, insbesondere für Haushaltsgeräte Expired - Fee Related EP1304436B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO20011003 2001-10-22
IT2001TO001003A ITTO20011003A1 (it) 2001-10-22 2001-10-22 Dispositivo blocca-porta, particolarmente per elettrodomestici.

Publications (3)

Publication Number Publication Date
EP1304436A2 EP1304436A2 (de) 2003-04-23
EP1304436A3 EP1304436A3 (de) 2004-12-08
EP1304436B1 true EP1304436B1 (de) 2007-01-24

Family

ID=11459273

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02023459A Expired - Fee Related EP1304436B1 (de) 2001-10-22 2002-10-21 Türschloss, insbesondere für Haushaltsgeräte

Country Status (4)

Country Link
EP (1) EP1304436B1 (de)
DE (1) DE60217790T2 (de)
ES (1) ES2281482T3 (de)
IT (1) ITTO20011003A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2370737B1 (de) 2008-12-30 2016-07-20 Arçelik Anonim Sirketi Ofen umfassend eine verriegelung
EP3859106A1 (de) 2020-01-31 2021-08-04 Bitron S.p.A. Türverriegelungsvorrichtung und mit solch einer türverriegelungsvorrichtung ausgestattetes haushaltsgerät

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4477957B2 (ja) * 2004-07-16 2010-06-09 株式会社ニフコ 開閉動作体の停止位置における引き込み係止機構
ITTO20050473A1 (it) * 2005-07-08 2007-01-09 Bitron Spa Dispositivo di ritenuta, particolarmente per una porta di un apparecchio elettrodomestico
EP2026689B1 (de) * 2006-06-03 2016-02-03 Marquardt GmbH Verschluss für ein hausgerät
US8246089B2 (en) 2006-10-28 2012-08-21 Marquardt Gmbh Lock for a household appliance
IT1396735B1 (it) * 2009-11-26 2012-12-14 Bitron Spa Dispositivo di chiusura porta per il portello di un elettrodomestico.
KR100980441B1 (ko) * 2010-02-25 2010-09-07 두얼메카닉스 주식회사 도어락 장치
IT1405177B1 (it) 2010-11-26 2013-12-20 Illinois Tool Works Dispositivo bloccaporta per un elettrodomestico, in particolare una lavastoviglie, ed elettrodomestico provvisto dello stesso
IT1404221B1 (it) * 2011-01-24 2013-11-15 Bitron Spa Dispositivo blocco-porta per un portello di un elettrodomestico
PL2893109T3 (pl) * 2012-09-10 2018-01-31 Illinois Tool Works Ściskająca uszczelkę zapadka ze zakumulowaną energią o zmniejszonym tarciu obrotowym
ITRM20120492A1 (it) * 2012-10-16 2014-04-17 Bitron Spa Dispositivo blocco-porta.
CN104337487B (zh) * 2013-07-31 2018-11-09 伊利诺斯工具制品有限公司 门锁和安装有门锁的洗碗机
ITTO20130691A1 (it) 2013-08-13 2015-02-14 Elbi Int Spa Apparecchiatura per controllare la chiusura di una porta di un elettrodomestico, in particolare per una macchina lavatrice, quale una macchina lavastoviglie.
WO2015189668A1 (en) * 2014-06-13 2015-12-17 Illinios Tool Works Inc. An electromagnetic door lock
US11272826B2 (en) * 2017-06-23 2022-03-15 Illinois Tool Works Inc. Appliance door latch system with pre-latching catch alignment system
IT202000012172A1 (it) * 2020-05-25 2021-11-25 Bitron Spa Dispositivo per la chiusura di un portello di un elettrodomestico
SE2150794A1 (en) * 2021-06-21 2022-10-04 Scanbox Thermoproducts Ab Locking arrangement for a food transport cart or food cabinet
CN113585888B (zh) * 2021-08-27 2022-05-06 广东美的厨房电器制造有限公司 门锁装置及烹饪器具

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Publication number Priority date Publication date Assignee Title
US2833578A (en) * 1956-11-14 1958-05-06 Nat Lock Co Refrigerator latch mechanism
US4142751A (en) * 1977-12-08 1979-03-06 Pullman Incorporated Door locking mechanisms for hoppers
DE3626956A1 (de) * 1986-08-08 1988-02-11 Bosch Siemens Hausgeraete Tuerverschluss fuer eine haushaltmaschine
DE19504796C2 (de) * 1995-02-14 1997-04-24 Ymos Ag Ind Produkte Schließvorrichtung für die Tür einer Spülmaschine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2370737B1 (de) 2008-12-30 2016-07-20 Arçelik Anonim Sirketi Ofen umfassend eine verriegelung
EP3859106A1 (de) 2020-01-31 2021-08-04 Bitron S.p.A. Türverriegelungsvorrichtung und mit solch einer türverriegelungsvorrichtung ausgestattetes haushaltsgerät

Also Published As

Publication number Publication date
ITTO20011003A1 (it) 2003-04-22
ES2281482T3 (es) 2007-10-01
DE60217790D1 (de) 2007-03-15
EP1304436A3 (de) 2004-12-08
DE60217790T2 (de) 2007-11-15
EP1304436A2 (de) 2003-04-23

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