EP1777068A2 - Entraînement direct d'une machine d'impression - Google Patents

Entraînement direct d'une machine d'impression Download PDF

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Publication number
EP1777068A2
EP1777068A2 EP06122396A EP06122396A EP1777068A2 EP 1777068 A2 EP1777068 A2 EP 1777068A2 EP 06122396 A EP06122396 A EP 06122396A EP 06122396 A EP06122396 A EP 06122396A EP 1777068 A2 EP1777068 A2 EP 1777068A2
Authority
EP
European Patent Office
Prior art keywords
cylinder
rotor
stator
bearing
electric motor
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.)
Granted
Application number
EP06122396A
Other languages
German (de)
English (en)
Other versions
EP1777068A3 (fr
EP1777068B1 (fr
Inventor
Günter Schmid
Thomas Dittenhöfer
Stephan Popp
Jürgen Weyh
Detlef Rode
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.)
Schaeffler Technologies AG and Co KG
Schaeffler Industrial Drives AG and Co KG
Original Assignee
INA Drives and Mechatronics GmbH and Co KG
Schaeffler 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 INA Drives and Mechatronics GmbH and Co KG, Schaeffler KG filed Critical INA Drives and Mechatronics GmbH and Co KG
Publication of EP1777068A2 publication Critical patent/EP1777068A2/fr
Publication of EP1777068A3 publication Critical patent/EP1777068A3/fr
Application granted granted Critical
Publication of EP1777068B1 publication Critical patent/EP1777068B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/004—Electric or hydraulic features of drives
    • B41F13/0045—Electric driving devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/20—Supports for bearings or supports for forme, offset, or impression cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2213/00—Arrangements for actuating or driving printing presses; Auxiliary devices or processes
    • B41P2213/10—Constitutive elements of driving devices
    • B41P2213/11—Motors
    • B41P2213/124—Electric motors
    • B41P2213/126—Rotary electric motors

Definitions

  • the invention relates to a device for driving a cylinder of a printing press, with an electric motor whose rotor is arranged coaxially to the cylinder of the printing press and rotatably connected thereto, and whose stator is held on a frame structure in which the cylinder is mounted axially displaceable.
  • a device for example from the DE 102 19 903 A1 known.
  • Another, from the EP 1 277 575 B1 known printing machine drive is part of an offset printing machine, which has at least one printing unit with at least one form and a transfer cylinder, wherein a lateral displacement of the forme cylinder can be provided. Since the rotor of the forme cylinder directly driving electric motor is rigidly connected to the forme cylinder and thus in its lateral, ie axial displacement is shifted with the stator of the motor is stationary, a change in the performance of the electric motor is to be assumed in an axial displacement of the forme cylinder.
  • the invention has for its object to provide an electric direct drive for a cylinder of a printing press, in which there is at most a slight dependence between the axial position of the cylinder and the properties of the electric drive.
  • this device is an electric direct drive with an electric motor
  • the rotor is arranged relative to the cylinder of the printing press not rotatable and coaxial therewith
  • the stator of the electric motor is held on a frame construction of the printing press, wherein the cylinder is mounted axially displaceable in the frame structure.
  • the gap space formed between the rotor and the stator is constant with respect to both the gap width and the length measured in the axial direction of the cylinder at each possible position of the cylinder during normal operation of the printing press.
  • stator and rotor This is achieved by the geometry of the stator and rotor and / or by the way the rotor is coupled to the cylinder and the stator to the frame construction.
  • a gap between the stator and rotor is generally understood that volume range between the stator and the rotor, in the exact radial direction, based on the axis of rotation of the cylinder of the printing press and the rotor, on the one hand by the rotor and on the other hand by the stator provided for direct electrical drive of the cylinder Motors is limited.
  • stator and rotor of the electric motor a different length measured in the axial direction, so that each axis of rotation of the cylinder intersecting, arranged perpendicular to this axis straight line which intersects the axially shorter of the two parts stator and rotor, in each operating state of the electric motor, ie in any possible axial positioning of the Cylinder, even in the axial direction longer of the parts stator and rotor cuts.
  • Other ways to keep the gap between the stator and rotor constant are by a variability of the axial position of the rotor or the stator relative to a rotor or the stator bearing member, ie relative to the rotatable cylinder or relative to the frame structure connected Housing of the electric motor, given.
  • the housing of the electric motor accommodating the stator is fastened to an outer ring of a roller bearing serving to mount the cylinder in the frame construction.
  • performance data of the electric direct drive such as torque and angular acceleration are not dependent on the displacement of the cylinder in the direction of its axis of rotation.
  • This also applies to designs in which the cylinder is displaceable by means of a linear guide perpendicular to its axis of rotation in the frame construction.
  • the rotor of the cylinder directly driving electric motor is guided axially displaceable relative to the cylinder of the printing press.
  • the stator is also fixedly arranged in the housing of the electric motor, which is connected directly or indirectly, in particular via a linear guide, which allows an adjustment of the cylinder perpendicular to its axis to the frame construction of the printing press.
  • the rotor of the electric motor in the radially inner region of a particular made of non-ferrous metal bushing, which is mounted axially displaceably on the cylinder or a pin fixedly connected thereto.
  • Such a bushing in particular non-ferrous metal bush, may also be provided in embodiments in which the rotor is held immovably on the cylinder or a component firmly connected thereto. Irrespective of the extent to which an axial displaceability of the rotor relative to the cylinder is provided is, the bearing of the rotor is designed such that no or only a negligible small rotation of the rotor relative to the cylinder is possible.
  • a roller bearing of the rotor is provided in an advantageous embodiment, as it can in principle also be used in conventional linear technology products.
  • a sliding bearing is feasible, which allows an adjustability of the rotor relative to the cylinder only in the axial direction.
  • a bearing is provided according to an advantageous development, which defines the axial position of the rotor relative to the housing of the electric motor, regardless of the axial positioning of the cylinder.
  • This bearing is preferably a deep groove ball bearing whose bearing rings are fixedly connected to the rotor or to the stator of the electric motor.
  • the rotor of the electric motor is connected by means of at least one axially compliant, at the same time rigid in the circumferential direction connecting element with the cylinder or a rigidly attached to this part.
  • the connecting element is in its, relative to the axis of rotation of the cylinder, axially outer region with the rotor and in the axially inner region with the cylinder or rigidly attached to this part, in particular pin connected.
  • the resilient connecting element between the cylinder and the rotor preferably has a spring action in the axial direction. The forces acting thereon in the axial direction on the rotor are less than the electromagnetic forces which likewise act in the axial direction and which occur during operation of the electric motor.
  • the rotor is centered at least approximately relative to the stator. Under no circumstances is the rotor displaceable beyond the stator in the axial direction.
  • the connecting element by laser welding to the rotor and / or with the cylinder or a rigidly attached to this part connected. Likewise, laser welding process can be used in the manufacture of the connecting element itself.
  • vibration-damping properties of the connecting element can be achieved by this is made of a composite material, in particular a sandwich composite of sheet metal and plastic.
  • a further embodiment of the invention provides that the stator is guided axially displaceable relative to a housing of the electric motor connected to the frame construction of the printing press.
  • the rotor is in this case rigidly connected to the cylinder of the printing press.
  • Between the end faces of the longitudinally displaceable in the housing of the electric motor mounted stator and these opposite inner faces of the housing are preferably elements with resilient properties, in particular in each case an O-ring arranged.
  • the stator always aligns so relative to the rotor that the geometry of the gap formed between the stator and rotor is independent of the axial position of the cylinder.
  • an axial bearing can be provided which keeps the stator always in an axially unchangeable position relative to the rotor, independently of the operation of the electric motor.
  • a particularly easy displacement of the stator in the longitudinal direction, i. in the axial direction, is given in the case of a rolling bearing of the stator in the housing of the electric motor.
  • Corresponding linear guide elements preferably have an adjustable bias, so that the compliance of the leadership of the stator can be minimized in the circumferential direction.
  • the electric direct drive of the printing machine cylinder has an intrinsically safe brake, ie, in the event of a power failure.
  • interacting Friction linings of this brake are fastened on the one hand to the rotor and on the other hand to the housing of the electric motor. If the brake, in particular by means of compressed air, solved, the rotor is moved in the housing of the electric motor in the axial direction. A displacement of the rotor in the opposite direction and thus a closing of the brake is preferably effected by means of spring force.
  • FIGs 1 to 9a, 9b each show a schematic view of various embodiments of an electric direct drive of a printing press.
  • This has a rotatable about an axis A cylinder 1, which is mounted in a frame structure 2 of the press not shown and directly driven by an electric motor 3.
  • the cylinder 1 is repeatedly stepped to the front side 4 with decreasing diameter, wherein a rotation about the axis A enabling rolling bearing 5 is arranged on an annular portion 6 of the cylinder 1.
  • the outer ring 7 of the rolling bearing 5, namely cylindrical roller bearing is not directly attached to the frame structure 2, but connected to this via a linear guide 8, which allows an adjustment of the cylinder 1 perpendicular to the axis of rotation A.
  • the housing 9 of the electric motor 3 is further attached. With each adjustment of the cylinder 1 perpendicular to the axis of rotation A thus the electric motor 3 is automatically adjusted with. Separate facilities for tracking the electric motor 3 are not required.
  • a pin 11 Adjacent to the end face 4 of the cylinder 1 is a pin 11, also referred to as a shaft journal extension, whose axis of rotation is identical to the axis A of the cylinder 1.
  • a pin 11 Adjacent to the end face 4 of the cylinder 1 is a pin 11, also referred to as a shaft journal extension, whose axis of rotation is identical to the axis A of the cylinder 1.
  • an edge 12 of the pin 11 engages around an annular portion 10 of the cylinder 1 bordering the end face 4.
  • the pin 11, which is fixed on the cylinder 1 by means of a tensioning device 13, carries the rotor 14 the electric motor 3.
  • stator 15 of the electric motor 3 designed as a torque motor is connected to the outer ring 7 of the roller bearing 5 via the housing 9.
  • the entire composite comprising the cylinder 1, the pin 11 and the rotor 14 is displaceable along the axis of rotation A.
  • This axial displacement is given by the nature of the rolling bearing 5.
  • the axial length L R of the rotor 14 is less than the length L S of the stator 15 measured in the same direction.
  • the lengths L R , L S of the parts 14, 15 of the electric motor 3 are dimensioned such that no possible operating state of the rotor 14 projects beyond the stator 15 in the axial direction.
  • a gap formed between the rotor 14 and stator 15 16 remains constant under all possible conditions of normal operation of the electric motor 1. All relevant characteristics of the electric motor 3, such as the speed-dependent relationship between power consumption and torque, are thus independent of the axial positioning of the cylinder 1.
  • the gap width of the gap space 16 is denoted by s; the length of the gap space 16 is identical to the length L R of the rotor 14.
  • the rotor 14 has an inner part 17 directly surrounding the pin 11 and an outer part 18, which are connected to one another by means of a tensioning device 19.
  • the tensioning device 19, which fixes the rotor 14 rigidly on the pin 11, comprises a number of screws 20 and wedges 21, wherein the screws 20 can be actuated through openings 22 of the housing 9.
  • the embodiment of Figure 2 also includes a permanent magnet excited synchronous motor as an electric motor 3.
  • the rotor 14 of this electric motor 3 is not fixed rigidly on the pin 11, but mounted displaceably by means of a guide 23 in the direction of the axis of rotation A.
  • the guide 23 comprises a fastened by means of a screw 24 on the pin 11 Sliding nut 25 on which a made of brass, a part of the rotor 14 forming bushing 26 slides.
  • the rotor 14 is thus rotationally fixed despite axial displacement on the pin 11, and thus also rotatably relative to the cylinder 1 gegla h rt.
  • Both in the embodiment of Figure 1 and in the embodiment of Figure 2 is an end face plate 27 of the housing 9 at the same time as an assembly aid in the assembly of the electric motor 3. If necessary, it is also possible to replace the stator 15 and / or the rotor 14 of the electric motor 3 Without completely removing the electric motor 3 from the printing press.
  • FIGS. 3 a and 3 b Details of the electric motor 3 of Figure 2, which are relevant to the assembly, are shown in Figures 3 a and 3 b.
  • An assembly pin 28 can be inserted through a bore 29 of the front plate 27 into a blind hole 30 of the rotor 14, so that the rotor 14 is positioned in the circumferential direction exactly relative to the pin 11.
  • the sliding block 25 of Figure 3 b is constructed in two parts, with two wedge pieces 31, 32 by means of a screw 33, which is actuated through a bore 34 in the front panel 27, against each other can be moved.
  • the game of the rotor 14 in the circumferential direction and the friction of the sliding block 25 in a groove 35 of the stator 14 is adjustable.
  • FIGS. 4 a and 4 b show a further developed variant of the bearing of the rotor 14 on the journal 11.
  • each of the wedge pieces 31, 32 of the sliding block 25 is equipped with rolling elements 36, namely needles, whereby a so-called needle shoe 37 is formed .
  • the sliding block 25 in the embodiment According to the figures 3 a, b and the needle shoe 37 is arbitrarily biased. Due to the rolling bearing of the rotor 14, both a clearance-free in the circumferential direction and a low-friction and hysteresis-free storage in the axial direction is given.
  • the rotor 14 is not held directly on the pin 11, but coupled thereto by means of a flexible connecting element 41, which is connected on the one hand with the rotor 14 and on the other hand with a hub fixedly arranged on the pin 11 hub 42.
  • the connecting element 41 comprises a plurality, in the axially front and in the axially rear region of the rotor 14 and the pin 11 held on the pin 11 by a play-free hub 42 arranged composite sheets 43.
  • Each composite sheet 43 is constructed as a sheet metal / plastic / sheet sandwich component and per Laser welding with both the rotor 14, which surrounds the connecting element 41, and with the hub 42, which is arranged radially within the connecting element 41, materially connected.
  • the connecting element 41 has elastically yielding properties exclusively in the direction of the axis of rotation A, so that the rotor 14 is rigidly mounted in the circumferential direction by means of the connecting element 41, but is resiliently mounted in the axial direction. Similar to the rotor 14 of FIG. 2 displaceably mounted by means of the bushing 26, the spring-mounted rotor 14 of FIG. 5 also positions itself automatically, solely on account of the electromagnetic forces occurring during operation of the electric motor 3, relative to the stator 15.
  • the embodiment of Figure 6 differs from the above-described embodiments substantially in that the stator 15 is mounted displaceably in the axial direction in the housing 9 of the electric motor 3, while the rotor 14 is rigidly connected to the pin 11 and thus also with the cylinder 1, for example, a plate, rubber, printing or transfer cylinder is connected.
  • an O-ring 45 is disposed on both end faces 44 of the stator 15, which abuts against an inner end face 46 of the housing 9.
  • a coil spring or a leaf spring may be provided.
  • the compliance of the O-rings 45 is sufficient to move in a side register adjustment, ie an axial displacement of the cylinder 1 and thus also of the rotor 14, the stator 15 by the electromagnetic forces occurring with.
  • a rotation of the stator 15 relative to the housing 9 is prevented by a screwed into the stator 15 pin 47, which dips into a bore 48 in the housing 9.
  • the stator length L S and the rotor length L R are identical, the gap space 16 between rotor 14 and stator 15 thus remains constant in each operating state in the exemplary embodiment according to FIG.
  • Figures 7 a and 7 b show a further development of the embodiment of Figure 6, wherein the stator 15 is guided longitudinally displaceable in the housing 9 by means of an adjustable needle shoe 49.
  • Comparable with the embodiment of Figure 4a, b also has the needle shoe 49 of Figure 7 a, b two mutually displaceable wedge pieces 50, 51, so that the game of the stator 15 is adjustable in the circumferential direction.
  • a bearing of the stator 15 is adjustable with bias.
  • the bias of the needle shoe 49 by means of a tool, not shown, changeable, which can be recognized through a bore 52 in the housing 9 to the needle shoe 49.
  • a bearing in particular a rolling bearing, be provided between the rotor 14 and the stator 15, by means of which, similar to the embodiment of Figure 4 a, the axial position of the stator 15 is fixed relative to the rotor 14 unchangeable.
  • a cooling medium in particular water
  • through-flowable cooling channels 63 which are directly adjacent to the housing 9, wherein seals 64 are provided to seal against the housing 9.
  • the cooling medium is passed through a bore 65 in the housing 9 into the cooling channels 63.
  • FIG. 8 shows a development of an electric direct drive in a printing machine, wherein an intrinsically safe brake 53 is integrated into the electric motor 3.
  • the rotor 14 of the electric motor 3 is similar to the embodiment of Figure 2 by means of a sliding bearing slidably mounted on the pin 11 connected to the cylinder 1.
  • a first brake pad 54 On the side facing away from the cylinder 1 front side of the rotor 14 is a first brake pad 54, which cooperates with a second, attached to the inside of the front panel 27 brake pad 55.
  • the brake pads 54, 55 are pressed together by means of a helical spring designed as a compression spring 56 which surrounds the pin 11.
  • the compression spring 56 may be formed, for example, as a plate spring.
  • one of the rotary decoupling rolling bearing 57 is disposed between the compression spring 56 and the rotor 14, wherein the arranged on the side of the compression spring 56 bearing ring 58th of the rolling bearing 57 is axially displaceable, but not rotatably mounted in the housing 9.
  • Another rolling bearing 59 transmits a force upon release of the brake 53 and is disposed between the front plate 27 of the housing 9 and the rotor 14.
  • arranged on the side of the front panel 27 bearing shell 60 of the rolling bearing 59 is not rigidly connected to the front panel 27, but coupled to a feed element 61 of an actuator 62 acting in the axial direction.
  • the actuator 62 is in the illustrated embodiment, a compressed air actuated actuator, but may for example be designed as an electrically actuated or hydraulic actuator. In any case, a release of the brake 53 is only possible when energized to the actuator 62.
  • Figures 9 a and 9 b show an electric direct drive of a printing press, wherein the stator 15 of the electric motor 3 is fixedly disposed in the housing 9, while the rotor 14 by means of a compensating coupling 66 rotatably, but axially displaceable on the connected to the cylinder 1 Pin 11 is guided.
  • a sliding bush 67 is provided for supporting the rotor 14 on the pin 11.
  • the axial position of the rotor 14 relative to the housing 9 is always constant even with an axial displacement, that is traversing movement of the pin 11.
  • the compensating coupling 66 is disposed between the rotor 14 and a clamping set 68 mounted on the pin 11.
  • the rotational movement of the pin 11 is transferred with decoupling of axial movement components to an angle encoder 70, which is arranged outside of the housing 9.
  • the angle sensor 70 is connected via a housing cap 71 with the rest of the housing 9.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Character Spaces And Line Spaces In Printers (AREA)
  • Control Of Electric Motors In General (AREA)
  • Rotary Presses (AREA)
EP06122396A 2005-10-20 2006-10-17 Entraînement direct d'une machine d'impression Not-in-force EP1777068B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005050651A DE102005050651A1 (de) 2005-10-20 2005-10-20 Direktantrieb einer Druckmaschine

Publications (3)

Publication Number Publication Date
EP1777068A2 true EP1777068A2 (fr) 2007-04-25
EP1777068A3 EP1777068A3 (fr) 2008-01-23
EP1777068B1 EP1777068B1 (fr) 2009-08-12

Family

ID=37781881

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06122396A Not-in-force EP1777068B1 (fr) 2005-10-20 2006-10-17 Entraînement direct d'une machine d'impression

Country Status (4)

Country Link
US (1) US7576464B2 (fr)
EP (1) EP1777068B1 (fr)
AT (1) ATE439237T1 (fr)
DE (2) DE102005050651A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111376729A (zh) * 2018-12-30 2020-07-07 江苏太航信息科技有限公司 一种提升电池续航能力的车辆系统
CN116404771A (zh) * 2023-04-23 2023-07-07 佛山市液艺科技有限公司 一种排水泵用电动机组合式定子

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005052497B4 (de) * 2005-10-31 2011-09-01 Koenig & Bauer Aktiengesellschaft Antrieb eines Zylinders einer Druckmaschine
JP6029854B2 (ja) * 2012-05-22 2016-11-24 ミネベア株式会社 振動子及び振動発生器
US20140015355A1 (en) * 2012-07-12 2014-01-16 Deere & Company Electric Machine Cooling Arrangement And Method

Citations (4)

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WO2003025406A1 (fr) 2001-09-14 2003-03-27 Ina-Schaeffler Kg Systeme de palier pour cylindres, rouleaux ou tambours
DE10219903A1 (de) 2002-05-03 2003-11-20 Roland Man Druckmasch Zylinder einer Rotationsdruckmaschine
EP1431034A2 (fr) 2002-12-21 2004-06-23 Koenig & Bauer Aktiengesellschaft Dispositif de réglage de position d'un corps rotatif à entraínement direct
EP1277575B1 (fr) 1994-08-30 2004-10-06 MAN Roland Druckmaschinen AG Presse d'impression offset

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DE4422097A1 (de) * 1994-06-24 1996-01-04 Roland Man Druckmasch Anordnung eines Elektromotors zum Antrieb eines Drehkörpers
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EP1377453B2 (fr) * 2001-04-09 2009-09-16 Koenig & Bauer Aktiengesellschaft Groupe d'impression d'une machine d'imprimerie
DE10255041A1 (de) * 2001-12-27 2003-07-17 Heidelberger Druckmasch Ag Antrieb für einen umlaufenden Zylinder einer drucktechnischen Maschine
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Publication number Priority date Publication date Assignee Title
EP1277575B1 (fr) 1994-08-30 2004-10-06 MAN Roland Druckmaschinen AG Presse d'impression offset
WO2003025406A1 (fr) 2001-09-14 2003-03-27 Ina-Schaeffler Kg Systeme de palier pour cylindres, rouleaux ou tambours
DE10219903A1 (de) 2002-05-03 2003-11-20 Roland Man Druckmasch Zylinder einer Rotationsdruckmaschine
EP1431034A2 (fr) 2002-12-21 2004-06-23 Koenig & Bauer Aktiengesellschaft Dispositif de réglage de position d'un corps rotatif à entraínement direct

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111376729A (zh) * 2018-12-30 2020-07-07 江苏太航信息科技有限公司 一种提升电池续航能力的车辆系统
CN111376729B (zh) * 2018-12-30 2021-08-31 江苏太航信息科技有限公司 一种提升电池续航能力的车辆系统
CN116404771A (zh) * 2023-04-23 2023-07-07 佛山市液艺科技有限公司 一种排水泵用电动机组合式定子
CN116404771B (zh) * 2023-04-23 2024-02-27 浙江硕驰泵业有限公司 一种排水泵用电动机组合式定子

Also Published As

Publication number Publication date
US20070090721A1 (en) 2007-04-26
US7576464B2 (en) 2009-08-18
EP1777068A3 (fr) 2008-01-23
EP1777068B1 (fr) 2009-08-12
DE102005050651A1 (de) 2007-04-26
DE502006004493D1 (de) 2009-09-24
ATE439237T1 (de) 2009-08-15

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