EP2177668A2 - Einstiegsluke - Google Patents

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Publication number
EP2177668A2
EP2177668A2 EP09173064A EP09173064A EP2177668A2 EP 2177668 A2 EP2177668 A2 EP 2177668A2 EP 09173064 A EP09173064 A EP 09173064A EP 09173064 A EP09173064 A EP 09173064A EP 2177668 A2 EP2177668 A2 EP 2177668A2
Authority
EP
European Patent Office
Prior art keywords
well
module
module according
hole
presenting
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Withdrawn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
EP09173064A
Other languages
English (en)
French (fr)
Other versions
EP2177668A3 (de
Inventor
Ercole Forlivesi
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.)
Elettra Srl
Original Assignee
Elettra Srl
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 Elettra Srl filed Critical Elettra Srl
Publication of EP2177668A2 publication Critical patent/EP2177668A2/de
Publication of EP2177668A3 publication Critical patent/EP2177668A3/de
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/121—Manhole shafts; Other inspection or access chambers; Accessories therefor characterised by the connection between shaft elements, e.g. of rings forming said shaft
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/124—Shaft entirely made of synthetic material

Definitions

  • the present invention relates to a well for underground infrastructures. More in particular, the present invention relates to a modular well for underground infrastructures. More in particular, the present invention relates to a modular well, which can be used in underground infrastructures for cable telecommunications.
  • underground infrastructures In the telecommunication sector the production of underground infrastructures is well known to allow copper cables or optical fibre cables passing below the ground, for instance below sidewalks and/or the road surface.
  • These underground infrastructures comprise usually tubes, designed so as to house inside themselves bundles of telecommunication cables, and underground wells, interconnecting branches of these tubes at regular intervals.
  • these wells surface from the ground so as to allow access to the respective telecommunication network and to enable update or maintenance operations on this network, such as for example the introduction and/or the replacement of cables.
  • each of these wells comprises a hollow body, in concrete or other type of conglomerate, presenting a substantially parallelepipedal or cylindrical shape.
  • This hollow body presents at least a pair of holes, obtained in the respective lateral surface during the phase of installation of the well and dimensioned to house ends of respective tubes, in such a manner as to allow the introduction of a plurality of telecommunication cables in the well.
  • junction boxes i.e. connecting elements designed to receive at least two distinct cables and to connect the respective ends thereof electrically or optically.
  • each well presents a metal cover arranged, in use, above the concrete hollow body to limit the respective inner space at the top.
  • this cover can be selectively opened, through lifting or rotation relative to the concrete hollow body, so as to allow the operators to access the well for installation and/or maintenance operations on the telecommunication network.
  • each of these wells for telecommunications presents extremely significant dimensions and a weight in the order of many quintals. It is therefore clearly apparent that the installation of each well requires both the use of a special transport mean, for example a tractor or a truck, for transporting the well to the installation site, and the use of a truck-mounted crane or a self-propelled winch for the installation operations. Moreover, the side walls of the concrete body must be holed during the operation for installing the well, so as to allow the connection with respective tubes housing the telecommunication cables, which must be connected through the junction box housed, in use, inside the well.
  • a special transport mean for example a tractor or a truck
  • each operation for installing a telecommunication well is particularly onerous and requires long execution times.
  • the use of special means for installing the well furthermore entails high installation costs.
  • the execution times, and therefore the installation costs can significantly increase if the well must be installed in a highly urbanised area, for example below the surface of a road with a lot of traffic or in the centre of a town.
  • each installation of a well requires that the vehicular traffic is stopped or deviated for all the duration of the intervention, thus creating discomforts both for the road users and for the company, which desires to install the wells and which will be obliged to coordinate, for prolonged time periods, the operations of installations, with the aid of the vehicular traffic control entities.
  • the present invention relates to a well for underground infrastructures. More in particular, the present invention relates to a modular well for underground infrastructures. More in particular, the present invention relates to a modular well, which can be used in underground structures for telecommunications.
  • An object of the present invention is to provide a well designed to be integrated in underground infrastructures, preferably infrastructures for telecommunications, and suitable to solve the above mentioned disadvantages.
  • each well according to the present invention is suitable to satisfy a plurality of requirements that to date have still not been addressed, and therefore suitable to represent a new and original source of economic interest and capable of modifying the current market of the underground infrastructures for civil use.
  • a further object of the present invention is to provide a module, which can be validly used to produce a well designed to be integrated in underground infrastructures.
  • a module is provided, whose main characteristics will be described in at least one of the appended claims.
  • a further object of the present invention is to provide a method, validly usable to install manually a well for telecommunication in a fast and extremely simple manner.
  • number 1 indicates, in its entirety, a well, designed to be integrated in underground infrastructures and usable preferably for producing cable communication networks, but also for producing plumbing systems or plants for transporting gas, electricity or sewage.
  • each well comprises a hollow body 10, which presents a substantially annular shape and delimits laterally a respective inner space 5.
  • this body 10 is made of metal, preferably ductile cast iron.
  • each well 1 preferably comprises a base 18 coupled to the body 10 and a closing device 20 supported by the body 10 at opposite side from the base 18 and suitable to delimit superiorly the space 5.
  • the closing device 20 can be selectively opened so as to allow the access to the space 5.
  • the space 5 of the well 1 can be used to house portions of respective telecommunication cables and/or junction or branch boxes for these telecommunication cables.
  • each of these telecommunication cables can be produced in any way and can comprise, for example, a plurality of twisted-pair copper or optical fibre wires, without however limiting the generality of the present invention.
  • the well 1 presents a modular structure and the hollow body 10 comprises at least a module 11 comprising a respective second body, substantially annular, which, for the sake of simplicity, will be indicated with the same number 11.
  • the body 10 will comprise preferably a plurality of modules 11, whose number will depend both upon the depth of the seat, into which the respective well 1 shall be installed, and upon the number of junction boxes, and therefore of branches of cables, which the respective space 5 shall house in use.
  • Each module 11, as well as the base 18 and the closing device 20, is produced preferably in metal through melting and subsequent moulding, so as to minimise the costs for producing the well 1.
  • each module 11 substantially present the same plan conformation, in such a manner that they can be easily stacked along a given direction D, typically the vertical direction, to produce the respective hollow body 10. More in particular, each module 11 presents a respective first upper edge 11', shaped so as to shape-couple with a second lower edge 11" of a further module 11, so that the coupling between two adjacent modules 11 is stable and releasable only by acting along the given direction D.
  • each module 11 presents at least a first abutment element 17" carried projecting along the given direction D by a respective second upper edge 11", and at least a seat 17' obtained in a respective second lower edge 11" and shaped so as to house a respective abutment element 17" carried projecting by a further adjacent module 11.
  • this abutment element 17" can preferably comprise a linear projection 17" travelling peripherally the respective second edge 11" along the whole extension thereof.
  • the seat 17' will be shaped and dimensioned in a manner substantially complementary to the respective abutment element 17", so as to shape-couple with it and, with particular reference to the above mentioned example of a linear projection 17", it can preferably comprise a groove or rest step 17' obtained in the first edge 11' along the whole extension of the respective inner perimeter.
  • the base 18 can preferably comprise a seat 17' to house an abutment element 17", which projects inferiorly from the adjacent module 11.
  • each abutment element 17" and each respective seat 17' can be interpreted as a coupling group 17 suitable, in use, to maintain each module 11 stably aligned along the given direction D with further modules 11 or with a base 18 contiguous with it.
  • each well 1 is substantially parallelepipedal-shaped and therefore presents two pairs of respective first and second lateral walls A and B, facing two by two and integrally connected to each other.
  • the base 18 and each single module 11 present a substantially rectangular plan conformation; in particular, each module 11 will be delimited by respective third and fourth lateral walls A' and B', which, in use, represent portions of respective first and second walls A and B of the body 10. Therefore, hereunder reference will be made only to a well 1 of parallelepipedal shape, as shown in figures 1 and 2 , without however limiting the generality of the present invention, which can therefore relate to wells of any shape, for example to wells of cylindrical or prismatic shape.
  • each module 11 presents at least a pair of first through holes 12 obtained in the third and/or fourth lateral walls A' and/or B' and usable, in use, to connect tubes to the well 1 and therefore to introduce branches of telecommunication cables inside the space 5. More in particular, each module 11 preferably presents a pair of first holes 12 for each third or fourth walls A' or B1, so as to allow the insertion of a plurality of branches of telecommunication cables inside the respective well 1, which can therefore act as a concentrating knot of the respective infrastructure.
  • each first hole 12 can present an inner diameter comprised between 70 mm and 140 mm, so as to be dimensioned to coupled with respective tubes that generally present outer diameters of 63 mm or 125 mm, according to the standards currently in force in the construction practice of the underground infrastructures for telecommunications.
  • each first hole 12 is provided with a respective bush 12', preferably produced in thermoplastic material, for example rubber, and suitable to support stably a closing member 26 for closing the respective first hole 12.
  • Each closing member 26 can economically comprise a tap 26 in plastic material or, preferably, in metal, shaped to couple in a substantially matching manner with the respective bush 12' so as to close the respective first hole 12 substantially in a fluid tight manner. Therefore, the set of each bush 12' and of the respective closing member 26 can be interpreted as a closing group 25, which can be selectively opened/closed for a respective first hole 12.
  • each bush 12' is made preferably in thermoplastic material and therefore, during the installation of the well 1, it can be heated at a given temperature and therefore substantially welded to an end of a respective tube housing telecommunication cables. Therefore each bush 12' can be also interpreted as a support member 12' suitable, in use, to couple a respective tube with the well 1 in a stable and substantially fluid-tight manner.
  • each module 11 is provided with a plurality of first coupling members 16 carried by and projecting from, inside the space 5, the respective lateral surface.
  • These first coupling members 16 can preferably present an annular shape and be therefore provided with respective slots, so as to present a double use.
  • these first coupling members 16 can be used, during phases of installation of the well 1, so as to act as throughs for respective tie rods for installing each module 11 in the respective underground seat.
  • the first coupling members 16 can be used as fixing elements 16 for fixing bands that are suitable to maintain stably in a given position junction boxes and/or cables housed, in use, inside the space 5.
  • fixing bands pass in the slots of the first coupling members 16, for example plastic bands with adjustable extension commonly used by electricians and installers.
  • each module 11 presents stiffening elements 30 carried inside the space 5 by the respective lateral surface and arranged at each square angle delimited by a third wall A' and by a respective adjacent fourth wall B'. These stiffening elements 30 rigidly connect each third wall A' of a module 11 to the respective fourth wall B' adjacent thereto, so as to give stiffness to the structure of the module 11 and to prevent deformations thereof that could compromise the alignment of the various modules 11 and the stability of the body 10.
  • each stiffening element 30 can preferably comprise a bracket 31, rectilinear or substantially right triangle shaped; this bracket 31 is preferably produced in a single piece with the respective module 11 or, alternatively, it can be welded to each respective first and second surfaces A' and B'.
  • the well 1 comprises a first rest grille 15' arranged, in use, on the bottom of the space 5 to support branches or surplus of cable and/or each junction box housed inside the body 10 of the well 1.
  • this first grille 15 rests on the base 18 of the body 10 by means of respective rest tabs 15' shaped so as to maintain the grille 15 lifted from the base 18 in case rainwater, filtered through the closing device 20, accumulates on the bottom of the space 5.
  • the first rest grille 15 is holed so as to allow the rainwater to flow out.
  • the well 1 comprises a second grille 19 supported by the module 11 adjacent to the closing device 20 so as to delimit the space 5 at the top and to protect the content thereof against any infiltration of soil or powder during operations for laying the well 1 or installing and/or maintaining the respective network of telecommunication cables.
  • each second protective grille 19 is carried by the respective module 11 by means of the respective stiffening elements 30, which support stably feet 19' for resting the second grille 19.
  • the well 1 can also comprise an adjusting ring 33 for regulating the position of the closing device 20; this ring 33 is interposed between the closing device 20 and the module 11 adjacent thereto, and is dimensioned so as to allow, during phases of installation of the well 1, the alignment between a substantially planar closing member 21 associated to the closing device 20 and the road surface or the ground surrounding the well 1.
  • This adjusting ring 33 for regulating the position of the closing member 21 is particularly useful when, for example following the reconstruction of the road surface, it is necessary to change the position of the closing device 20 along the given direction D.
  • the adjusting ring 33 presents preferably a first abutment element 17" and a seat 17', so that it can be stacked with each respective module 11 in a stable manner by means of a respective coupling group 17.
  • the closing device 20 comprises at least one closing member 21, preferably shaped as a cover 21, and a support frame 22 for supporting this cover 21.
  • this frame 22 is stably supported by a respective module 11, through the interposition of an adjusting ring 33, as the case may be.
  • the frame 22 can be provided with a respective abutment element 17" so as to couple stably with a respective seat 17' carried at the top by the adjacent module 11 or by the adjusting ring 33.
  • the frame 22 presents respective second coupling means 23, which can be used as throughs for tie rods so as to facilitate operations for installing the well 1.
  • the cover 21 is shaped so as substantially to shape-couple with the respective frame 22 and presents respective ribs 27 suitable to give more stiffness to the cover 21.
  • the cover 21 can preferably present a cavity 21' arranged at opposite side from the frame 22, housing the stiffening ribs 27, and suitable, in use, to contain a portion of the same covering that covers the ground, the sidewalk or the road, below which the well 1 has been installed, so as to minimise undesired effects of discontinuity in this covering.
  • the stiffening ribs 27 can be arranged so as to generate a cell structure, preferably of square or rectangular shape, for example to support better a pavement made of cobblestones, tesseras or porphyry cobblestones.
  • the cover 21 can be hinged to the relative frame 22 so that it can be opened through rotation without the need of being lifted vertically.
  • the cover 21 can comprise, according to its dimensions, a plurality of complementary portions 21', each of which is hinged to the respective frame 22 and can be opened/closed independently of the other portions 21' forming the cover 21.
  • each portion 21' is preferably triangle-shaped, and that the hinges 28, connecting each portions 21' to the frame 22, are arranged exclusively along two first opposite sides a' of the frame 22 so that, in use, when the closing device 20 is open, the second side b' perpendicular to the first sides a' are free and can be used by the operators to access the space 5 in a practical and safe manner.
  • the stiffening ribs 27 will be carried inferiorly projecting by the cover 21/portion 21' so as to facilitate each operation of opening the closing device 20 through rotation.
  • the closing device 20 can be provided with a safety lock 29 suitable, in use, to constrain rigidly the cover 21 or each portion 21' to the respective frame 22.
  • the well 1 can comprise a further annular module 11 provided with at least a pair of second holes 13 obtained in the respective lateral surface and substantially aligned.
  • this module 11 can preferably contain more than one pair of second holes 13 aligned and obtained in the first or in the second surfaces A' or B'.
  • Each second hole 13 presents a respective aperture 14 obtained in the second lower edge 11" of the respective module 11 so as to allow a lateral access to the respective second hole 13.
  • each second hole 13 can be preferably shaped as a slot presenting a substantially U-shaped perimeter delimited inferiorly by a respective aperture 14 obtained in the second edge 11".
  • each second hole 13 also presents a width comprised between 70 mm and 140 mm so that it can house, in use, any tube presenting an outer diameter substantially standard in the sector of the production of underground infrastructures not only for telecommunications but also, for instance, for water, gas and electricity distribution. It is therefore clearly apparent that the use of the module 11 illustrated in figure 4 allows to install a well 1 without the need of interventions on the tubes of pre-existing underground infrastructures.
  • each module 11 provided with respective holes 13 can be arranged both below the base 18, thus acting as support module 11 for supporting the body 10, and above the base 18, thus acting as base module 11 of the hollow body 10.
  • each module 11 and the closing device 20 allows to obtain wells 1 of class D400, i.e. presenting a breaking load of at least 400kN.
  • This characteristic allows to use the wells 1 according to the present invention practically in any underground infrastructure for civil use and, in particular, it allows to satisfy the law requirements for the installation of wells below the road surface.
  • a well 1 provided with two mutually superimposed modules 11, as that illustrated in figure 1 can be validly used in applications requiring wells of class D400.
  • each module 11 preferably presents dimensions in the order of 76 x 40 x 20 cm so that the body 10, composed by two mutually superimposed modules 11, presents each transverse section according to a plan parallel to a second wall B of substantially square shape (40 x 40 cm), so as to maximise the ratio between the volume of the space 5 and the quantity of metal necessary to produce the body 10.
  • this method comprises first of all the phase of producing at least a module 11 through melting and preferably in ductile cast iron.
  • This phase of producing at least a module 11 is followed, in sequence, by the phases of lowering a base 18, at least a module 11 and a frame 22 in a respective seat provided for the well 1, and by a phase of coupling stably a closing member 21 to the respective frame 22.
  • the overall weight of each single component or module of the well 1 is not greater than 30 kg and therefore each of the phases of lowering a given component of the well 1 in the respective sat can be performed manually and safety also by a single operator.
  • phase of lowering a base 18 can be or preceded or followed by a phase of lowering a module 11 provided with respective second holes 13 in such a manner as to house a pre-existing tube inside at least a pair of these second holes 13 reciprocally aligned.
  • the method for installing the well 1 comprises at least a phase of coupling an end of a given tube to a respective first hole 12 by means of a respective bush 21' so as to allow the introduction of telecommunication cables inside the space 5.
  • the use of a metal body 10 allows to obtain a well 1 presenting the same mechanical properties of stress resistance, but dimensions and weight significantly lower than the prior art; this well 1 can be furthermore transported to the installation site by means of a common car and therefore without the need for special transport means.
  • the weight of a Class D400 well according to the prior art is comprised between 9 and 11 quintals, whilst the weight of an equivalent well 1 produced in metal according to the teachings of the present invention is of about 200 kg.
  • each component of the well 1 is produced in such a manner as to have a weight no greater than 30 kg, it is clearly apparent that it is possible to lower the well 1 in the seat without using a crane or a winch, but simply performing manual installation operations which can be even performed by a single operator without the risk of injuries due to the excessive weight of the components to be installed.
  • the metal modules 11 can be produced with a plurality of first and/or second adequately dimensioned holes 12 and 13, and therefore, contrary to the prior art, it is not necessary to hole concrete blocks during the operation for installing the well. Therefore the use of a well 1 produced substantially in metal allows not only to facilitate respective installation operation, but also to reduce the duration, and therefore the costs, of these operations.

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)
  • Eye Examination Apparatus (AREA)
  • Window Of Vehicle (AREA)
EP09173064A 2008-10-15 2009-10-14 Einstiegsluke Withdrawn EP2177668A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000029U ITRA20080029U1 (it) 2008-10-15 2008-10-15 Pozzetto

Publications (2)

Publication Number Publication Date
EP2177668A2 true EP2177668A2 (de) 2010-04-21
EP2177668A3 EP2177668A3 (de) 2010-12-01

Family

ID=41611189

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09173064A Withdrawn EP2177668A3 (de) 2008-10-15 2009-10-14 Einstiegsluke

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EP (1) EP2177668A3 (de)
IT (1) ITRA20080029U1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011116874A1 (de) * 2011-10-25 2013-04-25 Langmatz Gmbh Schacht
IT201600092634A1 (it) * 2016-09-14 2018-03-14 Cis Sud Srl Armadio di distribuzione di linee di telecomunicazione, alloggiato in pozzetto stradale.
US11338524B1 (en) 2018-10-26 2022-05-24 Afl Telecommunications Llc Method of forming a foldable or collapsible plastic and/or composite utility enclosure
US11349281B1 (en) 2018-10-26 2022-05-31 Afl Telecommunications Llc Foldable and/or collapsible plastic/composite utility enclosure
US11374386B2 (en) 2018-10-26 2022-06-28 Afl Telecommunications Llc Foldable and/or collapsible plastic/composite utility enclosure

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005056930A1 (en) 2003-12-09 2005-06-23 John Lunt Improvements in and relating to manholes
WO2008141370A1 (en) 2007-05-21 2008-11-27 Aco Polycrete Pty Ltd A pit cover

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW571015B (en) * 2001-01-23 2004-01-11 Hayakawa Rubber Company Ltd Manhole structures, cut-off flexible fittings for manhole structures and construction methods of manhole structures

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005056930A1 (en) 2003-12-09 2005-06-23 John Lunt Improvements in and relating to manholes
WO2008141370A1 (en) 2007-05-21 2008-11-27 Aco Polycrete Pty Ltd A pit cover

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011116874A1 (de) * 2011-10-25 2013-04-25 Langmatz Gmbh Schacht
DE102011116874B4 (de) * 2011-10-25 2019-03-14 Langmatz Gmbh Schacht
IT201600092634A1 (it) * 2016-09-14 2018-03-14 Cis Sud Srl Armadio di distribuzione di linee di telecomunicazione, alloggiato in pozzetto stradale.
US11338524B1 (en) 2018-10-26 2022-05-24 Afl Telecommunications Llc Method of forming a foldable or collapsible plastic and/or composite utility enclosure
US11349281B1 (en) 2018-10-26 2022-05-31 Afl Telecommunications Llc Foldable and/or collapsible plastic/composite utility enclosure
US11374386B2 (en) 2018-10-26 2022-06-28 Afl Telecommunications Llc Foldable and/or collapsible plastic/composite utility enclosure
US11670917B2 (en) 2018-10-26 2023-06-06 Afl Telecommunications Llc Foldable and/or collapsible plastic/composite utility enclosure
US11670918B2 (en) 2018-10-26 2023-06-06 Afl Telecommunications Llc Foldable and/or collapsible plastic/composite utility enclosure
US11766834B2 (en) 2018-10-26 2023-09-26 Afl Telecommunications Llc Method of forming a foldable or collapsible plastic/composite utility enclosure
US12388241B2 (en) 2018-10-26 2025-08-12 Afl Telecommunications Llc Foldable and/or collapsible plastic/composite utility enclosure

Also Published As

Publication number Publication date
EP2177668A3 (de) 2010-12-01
ITRA20080029U1 (it) 2010-04-16

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