EP1465294B1 - Verbindungsanordnung für Schalter - Google Patents

Verbindungsanordnung für Schalter Download PDF

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Publication number
EP1465294B1
EP1465294B1 EP04075991.2A EP04075991A EP1465294B1 EP 1465294 B1 EP1465294 B1 EP 1465294B1 EP 04075991 A EP04075991 A EP 04075991A EP 1465294 B1 EP1465294 B1 EP 1465294B1
Authority
EP
European Patent Office
Prior art keywords
modular unit
safety
seat
arm
protection
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 - Lifetime
Application number
EP04075991.2A
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English (en)
French (fr)
Other versions
EP1465294A2 (de
EP1465294A3 (de
Inventor
Alberto Antoniazzi
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ABB SpA
Original Assignee
ABB SpA
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Filing date
Publication date
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Publication of EP1465294A2 publication Critical patent/EP1465294A2/de
Publication of EP1465294A3 publication Critical patent/EP1465294A3/de
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Publication of EP1465294B1 publication Critical patent/EP1465294B1/de
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Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/514—Bases; Cases composed as a modular blocks or assembly, i.e. composed of co-operating parts provided with contact members or holding contact members between them
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/22—Bases, e.g. strip, block, panel
    • H01R9/24—Terminal blocks
    • H01R9/2425—Structural association with built-in components
    • H01R9/2433—Structural association with built-in components with built-in switch

Definitions

  • the present invention relates to a connection device for switches, and in particular to a blocking and safety device for assembly of modular units containing electrical devices designed, for example, for protecting electrical networks.
  • connections of the above type is provided, for instance, by protection devices associated to low-voltage electrical networks, i.e., with operating voltages of up to approximately 1000 V.
  • These systems usually comprise a first modular unit containing a differential block, or else another protection unit, capable of actuating, in the case of faulty operation of the electrical network, a circuit breaker contained in a second modular unit associated to the first one.
  • connection of modular units of the aforesaid type is regulated by precise standards and must hence meet certain safety requirements.
  • the current standard envisages that the assembly of said units must be non-removable and built in such a way that any attempt at tampering will leave evident traces and irreversible damage, where by "assembly" of the two parts is meant both the mechanical coupling and the electrical coupling.
  • a third requirement imposed further concerns the electrical connections of the two parts in contact, which must be protected and adequately insulated.
  • connection of the two parts is obtained by means of a transverse cover or lid fixed to one of the two units by means of pins, having fork-shaped ends.
  • the electrical connections between the two units are external to the units themselves and, for this reason, the cover is also designed to provide a guide and protection of said connections.
  • the engagement systems currently used for connection of the modular units do not always enable a secure engagement and, for this reason, they must often be integrated with anti-tampering systems designed to prevent any possible external tampering, anti-tampering systems being obtained, for example, by sealing means or use of covers similar to the one described above.
  • the primary task of the present invention is to provide a safety device for connection of modular units which will enable a secure engagement of the parts, in conformance with the requirements envisaged by current standards.
  • one of the purposes of the present invention is to provide a connection device on which any external tampering is prevented, but which, at the same time, can be applied to the aforesaid modules with extreme ease by technicians qualified to carry out assembly of said modular units.
  • Another purpose of the present invention is to provide a connection device which cannot be actuated accidentally prior to being set in place, for the purpose of preserving functionality of the device itself and of the modular unit to which it is associated.
  • a further task of the present invention is to provide modular units, for example, for protection of electrical networks, which will be easily coupled together.
  • one of the purposes of the present invention is to provide modular units, in which the constituent parts and the anchoring means associated thereto will have a shape that is relatively simple and hence easy to produce.
  • a further task of what forms the subject of the present invention is to provide a protection device for electrical networks formed by two or more modular units, coupling of which can be readily achieved and meets the standards in question.
  • Not the least important purpose of the present invention is to provide a safety device for connection of modular units containing electrical devices that will present high reliability, relative ease of construction, and competitive costs.
  • the blocking and safety device 1 comprises two distinct elements, which can be inserted within two modular units in a non-removable way.
  • a first element 20 can only be inserted within a first modular unit 21, whilst the second element 30 can be inserted both into said first modular unit 21 and into a second modular unit 31 associated to the former.
  • the first element 20 preferably has a substantially prismatic shape, preferably with a square base, as may be seen in Figures 1a and 2a .
  • Made in said first element 20 is a cavity 22, within which it is possible to insert at least one portion of the second element 30.
  • said cavity 22 has a substantially prismatic shape and dimensions such as to be able to house one end of the second element 30 (see Figure 2a ).
  • the first element 20 is advantageously provided with anti-extraction means designed to prevent extraction once insertion of the first element itself into the first modular unit 21 is completed.
  • said anti-extraction means are made, for example, through at least one tooth-like end 25 projecting from the central body of the element itself.
  • the first element 20 is, in an initial step, partially inserted into the first modular unit 21, whilst it is completely inserted inside it only subsequently, in a step coinciding with the final setting-in-place of the blocking and safety device 1.
  • said first element 20 is preferably equipped also with arrest means which prevent a relative movement of the first element 20 with respect to said modular unit 21 in the interval between the two insertion steps referred to above.
  • said arrest means can coincide with the tooth-like end 25, which, by co-operating with the elastic walls forming the seat in which the first element 20 is inserted, enables a position of stable equilibrium to be maintained between the two parts.
  • the tooth-like end 25 can be advantageously shaped so as to oppose itself to motion, thus rendering necessary an additional thrust to enable complete insertion of the first element 20 within the first modular unit 21.
  • the end 25 prevents movement of the element 20 in an opposite direction, through coupling with appropriate seats made in the first modular unit 21, as described in what follows.
  • the second component 30 has, instead, a structure from which there extend a first arm 33 and a second arm 34 in two directions considerably different from one another.
  • the first arm 33 extends in a direction substantially orthogonal to that in which the second arm 34 extends; in addition, with reference to what has been indicated above, the first arm 33, preferably in its end part 35, is inserted into the cavity 22 made on the first element 20.
  • the second element 30 comprises anti-extraction means, which prevent motion of the element itself in substantially the same direction as that of insertion but in the opposite sense.
  • the invention further envisages the presence of appropriate engagement means associated to said second element 30, which are capable of ensuring a stable connection of the element itself to both of the modular units.
  • said anti-extraction means belonging to the second element 30 comprise shaped tabs 36 projecting from the central part of said first arm 33, whilst said engagement means comprise, instead, a fork-shaped part 38 associated to the end of said first arm 33.
  • the two arms of the fork 38 have, in their terminal part, two tooth-like shapings 39, which enable engagement of the second element 30 to the first modular unit 21.
  • said engagement means also comprise a hook-shaped end 37 associated to the terminal part of the second arm 34, which enables connection of the second element 30 with the second modular unit 31.
  • the second element 30 is also provided with guide means designed to facilitate a correct and stable insertion of the element itself within the two modular units to which it is associated.
  • said guide means comprise a guide side wall 41, which is associated to said first arm 33 and has a shape such that at least one terminal portion also can be inserted into said cavity 22 made on the first element 20.
  • the shape of the components forming the blocking and safety device 1 appears very simple and hence of easy construction but, at the same time, is provided with all the means necessary for ensuring operation and safety of the device itself.
  • the present invention relates also to a modular unit 21, as may be seen in Figure 3a , which comprises: a front surface 51; a rear surface 52; two side surfaces 53 and 54; a top surface 55; and a bottom surface 56.
  • Said modular unit 21 is characterized in that it comprises one first seat 70, designed for insertion of said first element 20, and one second seat 80, designed for insertion of said second element 30.
  • the two seats 70 and 80 are in communication with one another, and, in particular, said first seat 70 is obtained in a position corresponding to one first surface belonging to the first modular unit 21, whilst the second seat 80 is obtained in a position corresponding to one second surface adjacent to said first surface.
  • said first surface coincides with the front surface 51
  • said second surface coincides with the top surface 55.
  • FIGS. 1b and 2b show, moreover, how the seats 70 and 80 are provided with means for positioning and anchorage of the aforementioned anti-extraction means and/or of the engagement means belonging to both of the elements 20 and 30 forming the blocking and safety device 1.
  • the above anchoring means preferably comprise internal projections and cavities appropriately shaped according to the type of anti-extraction and/or engagement means to be housed.
  • the tooth-shaped ends 39, belonging to the terminal fork-shaped part 38 are anchored to appropriate projections 81 and are then fixedly blocked.
  • the said projecting tabs 36 remain positioned behind corresponding projections 82, preventing in this way extraction of the second element 30.
  • the present invention also relates to a protection and safety device 2 for electrical networks, which comprises one first modular unit 21, as described above, that can be coupled to a second modular unit 31 and which is characterized in that it comprises the blocking and safety device 1 as defined previously.
  • a protection and safety device 2 made up in this way may, for example, comprise, inside said first modular unit 21, a protective electrical system of a differential type and, inside said second modular unit 31, a circuit-breaker system.
  • Figure 4a shows the first step of joining of the two modular units forming the protection and safety device 2.
  • the two elements 20 and 30 forming the blocking and safety device 1 are associated to the first modular unit and partially inserted therein through, respectively, the top surface 55 and the front surface 51, according to what has already been indicated above.
  • Figure 4b shows, instead, a second step of joining of the two modular units. It may be noted how said joining occurs through the contact of a side surface 54 belonging to the first modular unit 21 with a second side surface 91 belonging to the second modular unit 31.
  • the surfaces in contact are provided with mechanical and electrical coupling keys to enable mutual positioning and correct operation of the two parts.
  • these latter systems comprise, respectively, coupling pins 101 and actuating mechanisms 102.
  • Figure 4c shows the same step of joining of the two modular units as the one represented in Figure 4b according, however, to a different viewpoint which makes it possible to appreciate better the position of the two elements forming the blocking and safety device 1, as well as the position of the corresponding seats made in the two modular units.
  • Figure 4d shows, instead, the complete joining of the two modular units 21 and 31 through the blocking and safety device 1 according to the invention. It may be noted how, at the end of joining, both of the elements 20 and 30 making up the blocking and safety device 1 are completely inserted inside the two modular units 21 and 31 in a non-removable way on account of the engagement and/or anti-extraction means so as to rendering any attempt of external tampering rather evident.
  • the invention preferably envisages also that the two modular units 21 and 31 are coupled through a transverse element 200 preferably provided with electrical coupling keys.
  • said transverse element is stably engaged to the first modular unit 21 through the bottom surface 56 and is provided with electrical connections 103, which can be appropriately coupled, via the bottom surface 92, to the connection terminals belonging to the second modular unit 31.
  • the second modular unit 31 further comprises a third seat 100, which, as may be seen in Figure 4c , is made on a third surface 93 belonging to said second modular unit 31 and is substantially adjacent, according to a preferred embodiment previously indicated, to the top surface 55 of the first modular unit 21.
  • a third seat 100 which, as may be seen in Figure 4c , is made on a third surface 93 belonging to said second modular unit 31 and is substantially adjacent, according to a preferred embodiment previously indicated, to the top surface 55 of the first modular unit 21.
  • the second element 30, through the second transverse arm 34 enables a transverse connection of the two modular units 21 and 31 so ensuring mutual positioning thereof.
  • Figures 1b and 2b show precisely the position of the two elements 20 and 30 before and after the last step of insertion into the first modular unit.
  • first element 20 Only a vertical displacement of the first element 20 will enable horizontal displacement of the second element 30 and hence its complete insertion.
  • the second element 30 can be inserted right in, and hence blocked, within the corresponding seat 80 only when the first element 20 is completely inserted into the corresponding seat 70.
  • the technical solutions adopted for the blocking and safety device according to the invention enable the pre-set tasks and purposes to be fully achieved.
  • the blocking device is in conformance with the requirements imposed by the standards concerning safety.
  • the operating principle and the compulsory sequence of insertion of the two elements forming the device moreover afford a guarantee against any attempt at external tampering, as well as providing a tool for prevention against any possible losses of functionality deriving from accidental impact or falling of the modular units.
  • the simple shape of the constituent elements and of the corresponding coupling seats made enables limitation of production costs, at the same time guaranteeing a high degree of functionality of the device.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Push-Button Switches (AREA)

Claims (23)

  1. Sicherheits- und Blockiervorrichtung (1) zum Verbinden einer ersten modularen Einheit (21) und einer zweiten modularen Einheit (31), die elektrische Vorrichtungen mit zwei getrennten Elementen beinhaltet, die in einer nicht-entfernbaren Art in die modularen Einheiten eingefügt werden können, wobei das erste (20) der Elemente in die erste modulare Einheit (21) eingefügt werden kann, und das zweite (30) der Elemente in beide der modularen Einheiten (21, 31) eingefügt werden kann, dadurch gekennzeichnet, dass das erste Element (20) eine im Wesentlichen prismatische Form aufweist und eine Aushöhlung (22) aufweist, die zum Einfügen des zweiten Elements (30) ausgebildet ist.
  2. Sicherheits- und Blockiervorrichtung (1) nach Anspruch 1, dadurch gekennzeichnet, dass das erste Element (20) eine Antiextraktionseinrichtung, um eine Extraktion aus der ersten modularen Einheit (21) zu verhindern, und/oder eine Sperreinrichtung zum Beibehalten einer Position der teilweisen Einfügung des ersten Elements (20) in die erste modulare Einheit (21) aufweist.
  3. Sicherheits- und Blockiervorrichtung (1) nach Anspruch 2, dadurch gekennzeichnet, dass die Antiextraktionseinrichtung und die Sperreinrichtung zumindest ein zahnartiges Ende (25) aufweisen, das aus dem mittigen Körper des ersten Elements (20) herausragt.
  4. Sicherheits- und Blockiervorrichtung (1) nach einem der vorgenannten Ansprüche 2 bis 3, dadurch gekennzeichnet, dass das zweite Element (30) durch eine Struktur definiert ist, die einen ersten Arm (33) und einen zweiten Arm (34) aufweist, wobei der erste Arm (33) in die Aushöhlung (22) eingefügt werden kann, die auf dem ersten Element (20) ausgebildet ist.
  5. Sicherheits- und Blockiervorrichtung (1) nach Anspruch 4, dadurch gekennzeichnet, dass der zweite Arm (34) in einer Richtung verläuft, die im Wesentlichen rechtwinklig zu der ist, in der der erste Arm (33) verläuft.
  6. Sicherheits- und Blockiervorrichtung (1) nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass der erste Arm (33) eine Antiextraktionseinrichtung aufweist und der erste Arm (33) und der zweite Arm (34) eine Eingriffseinrichtung aufweisen.
  7. Sicherheits- und Blockiervorrichtung (1) nach Anspruch 6, dadurch gekennzeichnet, dass die Antiextraktionseimichtung geformte Streifen (36) aufweist, die aus dem ersten Arm (33) herausragt, und wobei die Eingriffseinrichtung einen gabelförmigen Teil (38), der dem Ende des ersten Arms (33) zugeordnet ist, und ein hakenförmiges Ende (37), das dem Anschlussteil des zweiten Arms (34) zugeordnet ist, aufweist, wobei der gabelförmige Teil in den zwei Verzweigungen der Gabel zahnförmige Formen (39) aufweist.
  8. Sicherheits- und Blockiervorrichtung (1) nach einem oder mehreren der vorgenannten Ansprüche, dadurch gekennzeichnet, dass das zweite Element (30) eine Führungseinrichtung für das Führen des Einfügens aufweist.
  9. Sicherheits- und Blockiervorrichtung (1) nach Anspruch 8, dadurch gekennzeichnet, dass die Führungseimichtung eine Seitenwand (41) aufweist, die dem ersten Arm (33) zugeordnet ist, wobei die Wand (41) an einem Ende derselben in die Aushöhlung (22), die sich auf dem ersten Element (20) befindet, eingefügt werden kann.
  10. Modulare Einheit (21) zum Schutz und Sicherheitsvorrichtungen für elektrische Netzwerke, aufweisend eine vordere Oberfläche (51), eine hintere Oberfläche (52), zwei seitliche Oberflächen (53, 54), eine obere Oberfläche (55), eine Bodenoberfläche (56), wobei die modulare Einheit (21) so ausgebildet ist, dass sie mit einer zweiten modularen Einheit (31) gekoppelt wird und dadurch gekennzeichnet ist, dass sie einen ersten Sitz (70) und einen zweiten Sitz (80) aufweist, um ein erstes Element (20) und ein zweites Element (30) einer Sicherheits- und Blockiervorrichtung (1) nach einem oder mehreren der vorgenannten Ansprüche einzufügen.
  11. Modulare Einheit (21) nach Anspruch 10, dadurch gekennzeichnet, dass der erste Sitz (70) mit dem zweiten Sitz (80) in Verbindung steht.
  12. Modulare Einheit (21) nach Anspruch 10 oder 11, dadurch gekennzeichnet, dass der erste Sitz (70) von einer ersten Oberfläche der ersten modularen Einheit erhalten wird und der zweite Sitz (80) von einer zweiten Oberfläche, die sich neben der ersten Oberfläche befindet, erhalten wird.
  13. Modulare Einheit (21) nach einem oder mehreren der Ansprüche 10 bis 12, dadurch gekennzeichnet, dass der erste Sitz (70) und der zweite Sitz (80) eine Einrichtung zum Positionieren und Verankern der Antiextraktionseinrichtung und/oder der Eingriffseinrichtung nach dem, was in Anspruch 7 und 8 definiert ist, aufweisen.
  14. Modulare Einheit (21) nach Anspruch 13, dadurch gekennzeichnet, dass die Systeme zum Positionieren und Verankern Vorsprünge (81) und innere Hohlräume (82) aufweisen, die geometrisch zu der Eingriffseinrichtung und/oder der Antiextraktionseinrichtung, die untergebracht werden sollen, passen.
  15. Schutz- und Sicherheitsvorrichtung (2) für elektrische Netzwerke, aufweisend eine erste modulare Einheit (21) nach einem oder mehreren der Ansprüche 10 bis 14, die mit einer zweiten modularen Einheit (31) gekoppelt werden kann und dadurch gekennzeichnet ist, dass sie eine Sicherheits- und Blockiervorrichtung (1) nach einem oder mehreren der Ansprüche 1 bis 9 aufweist.
  16. Schutz- und Sicherheitsvorrichtung (2) nach Anspruch 15, dadurch gekennzeichnet, dass das Koppeln der modularen Einheiten (21, 31) durch den Kontakt einer Seitenoberfläche (54) der ersten modularen Einheit (21) mit einer zweiten Oberfläche (91), die zu der zweiten modularen Einheit (31) gehört, durchgeführt wird, wobei die in Kontakt stehenden Oberflächen über mechanische und elektrische Kopplungsschlüssel verfügen.
  17. Schutz- und Sicherheitsvorrichtung (2) nach Anspruch 16, dadurch gekennzeichnet, dass die mechanischen und elektrischen Kopplungsschlüssel jeweils Verbindungsstifte (101) und Betätigungsmechanismen (102) aufweisen.
  18. Schutz- und Sicherheitsvorrichtung (2) nach den Ansprüchen 15 bis 17, dadurch gekennzeichnet, dass die modularen Einheiten (21, 31) durch ein transversales Element (200) gekoppelt sind, das vorzugsweise mit elektrischen Kopplungsschlüsseln versehen ist.
  19. Schutz- und Sicherheitsvorrichtung (2) nach Anspruch 18, dadurch gekennzeichnet, dass das transversale Element (200) mit der ersten modularen Einheit (21) durch das Bodenelement (56) stabil in Eingriff steht und mit elektrischen Verbindungen (103) versehen ist, die entsprechend mit entsprechenden Verbindungsanschlüssen verbunden werden können, die sich in der zweiten modularen Einheit (31) befinden.
  20. Schutz- und Sicherheitsvorrichtung (2) nach einem oder mehreren der Ansprüche 15 bis 19, dadurch gekennzeichnet, dass die zweite modulare Einheit (31) einen dritten Sitz (100) zum Einfügen des zweiten Elements (30) aufweist, wobei der dritte Sitz (100) auf einer dritten Oberfläche (92) ausgebildet ist, die zu der zweiten modularen Einheit (31) gehört und im Wesentlichen neben der zweiten Oberfläche (54) liegt.
  21. Schutz- und Sicherheitsvorrichtung (2) nach einem oder mehreren der Ansprüche 15 bis 20, dadurch gekennzeichnet, dass das Einfügen des ersten Elements (20) in den ersten Sitz (70) einem Einfügen des zweiten Elements (30) in den zweiten Sitz (80) und den dritten Sitz (100) vorangeht.
  22. Schutz- und Sicherheitsvorrichtung (2) nach den Ansprüchen 15 bis 21, dadurch gekennzeichnet, dass der dritte Sitz (100) geformte Aushöhlungen zum Verankern der hakenartigen Enden (37) des zweiten Arms (34) des zweiten Elements (30) aufweist.
  23. Schutz- und Sicherheitsvorrichtung (2) nach einem oder mehreren der Ansprüche 15 bis 22, dadurch gekennzeichnet, dass die erste modulare Einheit (21) ein elektrisches Differentialschutzsystem aufweist und die zweite modulare Einheit (31) einen elektrischen Hauptschalter aufweist.
EP04075991.2A 2003-04-04 2004-04-01 Verbindungsanordnung für Schalter Expired - Lifetime EP1465294B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBG20030024 ITBG20030024A1 (it) 2003-04-04 2003-04-04 Dispositivo di connessione per interruttori.
ITBG20030024 2003-04-04

Publications (3)

Publication Number Publication Date
EP1465294A2 EP1465294A2 (de) 2004-10-06
EP1465294A3 EP1465294A3 (de) 2008-11-26
EP1465294B1 true EP1465294B1 (de) 2016-06-01

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EP04075991.2A Expired - Lifetime EP1465294B1 (de) 2003-04-04 2004-04-01 Verbindungsanordnung für Schalter

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EP (1) EP1465294B1 (de)
IT (1) ITBG20030024A1 (de)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2640422B1 (fr) * 1988-12-14 1996-04-05 Merlin Gerin Dispositif d'assemblage modulaire d'un disjoncteur differentiel multipolaire
DE4403585A1 (de) * 1994-02-05 1995-08-10 Licentia Gmbh Kombination von zwei Schaltgeräten oder anderen elektrischen Reiheneinbaugeräten

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ITBG20030024A1 (it) 2004-10-05
EP1465294A2 (de) 2004-10-06
EP1465294A3 (de) 2008-11-26

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