WO2009016211A1 - Transportation unit for a cable transportation system, and cable transportation system comprising such a unit - Google Patents

Transportation unit for a cable transportation system, and cable transportation system comprising such a unit Download PDF

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Publication number
WO2009016211A1
WO2009016211A1 PCT/EP2008/060029 EP2008060029W WO2009016211A1 WO 2009016211 A1 WO2009016211 A1 WO 2009016211A1 EP 2008060029 W EP2008060029 W EP 2008060029W WO 2009016211 A1 WO2009016211 A1 WO 2009016211A1
Authority
WO
WIPO (PCT)
Prior art keywords
transportation unit
chair
transportation
cable
trolley
Prior art date
Application number
PCT/EP2008/060029
Other languages
French (fr)
Inventor
Rudolf Beha
Original Assignee
Rolic Invest Sarl
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 Rolic Invest Sarl filed Critical Rolic Invest Sarl
Priority to EP08786655A priority Critical patent/EP2185397B1/en
Publication of WO2009016211A1 publication Critical patent/WO2009016211A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
    • B61B12/00—Component parts, details or accessories not provided for in groups B61B7/00 - B61B11/00
    • B61B12/04—Devices for damping vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
    • B61B12/00—Component parts, details or accessories not provided for in groups B61B7/00 - B61B11/00
    • B61B12/002—Cabins; Ski-lift seats

Definitions

  • the present invention relates to a transportation unit for a cable transportation system.
  • the present invention relates to a transportation unit which is moved in a travelling direction and comprises a suspension arm; a trolley connected to the suspension arm and which engages a rail at a turnaround station of the cable transportation system; and a chair connected to the suspension arm.
  • Transportation units of the above type are used for passenger transport, and the chair extends in width predominantly crosswise to the travelling direction.
  • transportation units now have a much larger capacity than in the past. More specifically, chair-lift chairs have gradually become wider and wider, to the point of now comprising eight seats in a row crosswise to the travelling direction.
  • This operating condition of the cable transportation system is acceptable up to a certain degree of tilt of the transportation unit, but becomes a problem when the transportation unit is detached from the cable, and the trolley engages a rail and is driven by an auxiliary drive device at the turnaround station.
  • the trolley engages the rail at relatively high speed, and, despite the lead-in of the rail, engagement produces a sharp change in the tilt angle of the transportation unit, including the chair, which is a major source of discomfort to passengers.
  • a transportation unit for a cable transportation system the transportation unit being moved in a travelling direction and comprising a suspension arm; a trolley connected to the suspension arm and which engages a rail at a turnaround station of the cable transportation system; and a chair connected to the suspension arm; the transportation unit being characterized by comprising an articulated joint assembly between the chair and the trolley.
  • the present invention also relates to a cable transportation system.
  • a cable transportation system comprising a cable extending along an endless path between two turnaround stations to move, in a travelling direction, a number of transportation units, each of which comprises a suspension arm; a trolley connected to the suspension arm and which engages a rail at a turnaround station of the cable transportation system; and a chair connected to the suspension arm; the cable transportation system being characterized in that each transportation unit comprises an articulated joint assembly between the chair and the trolley.
  • Figure 1 shows a partly sectioned front view, with parts removed for clarity, of a cable transportation system
  • Figures 2 and 3 show larger-scale, partly sectioned front views, with parts removed for clarity, of a detail of the cable transportation system at two different operating stages
  • Figure 4 shows a larger-scale, partly sectioned schematic of a lock device of the Figure 1 transportation unit
  • Figure 5 shows a schematic of a variation of the lock device
  • Figure 6 shows a schematic of a further variation of the lock device.
  • Number 1 in Figure 1 indicates as a whole a cable transportation system comprising a cable 2 extending along an endless path; a number of transportation units 3 (only one shown in Figure 1); and two turnaround stations 4 (only one shown in Figure 1) .
  • Turnaround station 4 comprises a rail 5 with three linear cams 6, 7, 8 extending along a given path; and a drive device (not shown) for driving transportation units 3 inside turnaround station 4.
  • Each transportation unit 3 is moved in a travelling direction Dl by cable 2 along the path portions between the two turnaround stations 4, and by the drive device
  • Each transportation unit 3 extends in width crosswise to travelling direction Dl.
  • transportation unit 3 is shown being detached from cable 2, and engages rail 5 at turnaround station 4.
  • Each transportation unit 3 comprises a suspension arm 9; a trolley 10 connected to suspension arm 9 and supporting a clamp 11 for selectively engaging cable 2 (as shown more clearly in Figures 2 and 3); a chair 12; and an articulated joint assembly 13 between chair 12 and trolley 10.
  • suspension arm 9 is connected rigidly to trolley 10, but is hinged to chair
  • Chair 12 comprises an inverted-U-shaped frame 14; a seat 15; a backrest 16; a safety bar 17 which rotates about an axis A2 ; and four footrest assemblies 18 fixed to safety bar 17.
  • chair 12 has eight seats in a row, and is substantially symmetrical with respect to a plane of symmetry P.
  • articulated joint assembly
  • Articulated joint assembly 13 comprises a pin 19 extending along axis Al; a flange 20 fixed to suspension arm 9; a flange 21 fixed to frame 14 of chair 12; a coil spring 22 between suspension arm 9 and frame 14 of chair 12; and a shock absorber 23 between suspension arm 9 and frame 14 of chair 12.
  • shock absorber 23 is located inside coil spring 22.
  • articulated joint assembly 13 can be locked selectively in a given position by means of a lock device 30. More specifically, shock absorber 23 between chair 12 and trolley 10 can be locked in a given position to lock articulated joint assembly 13 as a whole. As shown more clearly in Figure 4, shock absorber 23 is a fluid shock absorber comprising a cylinder 24; and a piston 25 which slides inside cylinder 24 and divides cylinder 24 into two chambers 26, 27 communicating via a connecting circuit 28 with a constriction 29.
  • lock device 30 selectively locks shock absorber 23 and communication between chambers 26 and 27, and comprises a two-way valve 31 maintained in a normally-open position by a spring 32; and a Bowden cable 33 for overcoming the force of spring 32 (as shown schematically in Figure 4) .
  • lock device 30 comprises a lever 34, which is connected to Bowden cable 33, is hinged to suspension arm 9, and is operated by a linear cam 35.
  • chair 12 moves into a horizontal position, and articulated joint assembly 13 is locked by lock device 30 to lock chair 12 with respect to suspension arm 9 in a substantially horizontal position, and keep chair 12 in this position, even after the passengers have boarded, along the rest of the path at turnaround station 4.
  • articulated joint assembly 13 is locked along the path portion at turnaround station 4 extending between the passenger-alighting portion and the exit of turnaround station 4.
  • the articulated joint assembly is locked before the passengers alight.
  • transportation unit 3 is equipped with a lock device 36, and moves along a cable system 1 in which linear cam 35 is replaced by an electrically conductive strip 37.
  • lock device 36 comprises a sliding electric contact 38, an electric cable 39, and a two-position, two-way, normally-open solenoid valve 40 respectively.
  • solenoid valve 40 is controlled by an electric signal transmitted via strip 37, sliding electric contact 38, and electric cable 39.
  • transportation unit 3 comprises, instead of shock absorber 23, a rubber silentblock-type shock absorber 41; and, instead of lock device 30, a lock device 42 comprising linear cam 35, lever 34, Bowden cable 33, a brake clamp 43 connected to the suspension arm, and a rod 44 connected to chair 12 - in the example shown, to frame 14 of chair 12 - and engaged by brake clamp 43.
  • Bowden cable 33 provides for closing the normally-open brake clamp 43, and for gripping rod 44 to lock chair 12 in a given position with respect to suspension arm 9.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Electric Cable Arrangement Between Relatively Moving Parts (AREA)
  • Seats For Vehicles (AREA)

Abstract

A transportation unit (3) for a cable transportation system (1) is moved in a travelling direction (D1) and has a suspension arm (9); a trolley (10) connected to the suspension arm (9) and which engages a rail (5) at a turnaround station (4) of the cable transportation system (1); a chair (12) connected to the suspension arm (9); and an articulated joint assembly (13) between the chair (12) and the trolley (10).

Description

TRANSPORTATION UNIT FOR A CABLE TRANSPORTATION SYSTEM, AND CABLE TRANSPORTATION SYSTEM COMPRISING SUCH A UNIT
TECHNICAL FIELD The present invention relates to a transportation unit for a cable transportation system.
More specifically, the present invention relates to a transportation unit which is moved in a travelling direction and comprises a suspension arm; a trolley connected to the suspension arm and which engages a rail at a turnaround station of the cable transportation system; and a chair connected to the suspension arm.
BACKGROUND ART
Transportation units of the above type are used for passenger transport, and the chair extends in width predominantly crosswise to the travelling direction. As a result of the tendency in the passenger cable transportation industry to increase passenger-carrying capacity per unit of time, transportation units now have a much larger capacity than in the past. More specifically, chair-lift chairs have gradually become wider and wider, to the point of now comprising eight seats in a row crosswise to the travelling direction.
While indeed increasing chair-lift carrying capacity, chairs with a large number of seats have the drawback that, when the chair is occupied only partly by a small number of passengers, and asymmetrically with respect to the cable, the entire transportation unit rotates about the cable into a tilted position.
This operating condition of the cable transportation system is acceptable up to a certain degree of tilt of the transportation unit, but becomes a problem when the transportation unit is detached from the cable, and the trolley engages a rail and is driven by an auxiliary drive device at the turnaround station.
The trolley engages the rail at relatively high speed, and, despite the lead-in of the rail, engagement produces a sharp change in the tilt angle of the transportation unit, including the chair, which is a major source of discomfort to passengers.
DISCLOSURE OF INVENTION
It is an object of the present invention to provide a transportation unit of the above type, designed to eliminate the drawbacks of the known art, and which, in particular, is cheap to produce.
According to the present invention, there is provided a transportation unit for a cable transportation system, the transportation unit being moved in a travelling direction and comprising a suspension arm; a trolley connected to the suspension arm and which engages a rail at a turnaround station of the cable transportation system; and a chair connected to the suspension arm; the transportation unit being characterized by comprising an articulated joint assembly between the chair and the trolley.
The shift in the position of the trolley from the ideal position with respect to the rail is thus reduced, thus reducing the intensity of any shock or sharp movements transmitted to the chair.
The present invention also relates to a cable transportation system.
According to the present invention, there is provided a cable transportation system comprising a cable extending along an endless path between two turnaround stations to move, in a travelling direction, a number of transportation units, each of which comprises a suspension arm; a trolley connected to the suspension arm and which engages a rail at a turnaround station of the cable transportation system; and a chair connected to the suspension arm; the cable transportation system being characterized in that each transportation unit comprises an articulated joint assembly between the chair and the trolley.
BRIEF DESCRIPTION OF THE DRAWINGS
A non-limiting embodiment of the present invention will be described by way of example with reference to the accompanying drawings, in which:
Figure 1 shows a partly sectioned front view, with parts removed for clarity, of a cable transportation system; Figures 2 and 3 show larger-scale, partly sectioned front views, with parts removed for clarity, of a detail of the cable transportation system at two different operating stages; Figure 4 shows a larger-scale, partly sectioned schematic of a lock device of the Figure 1 transportation unit;
Figure 5 shows a schematic of a variation of the lock device;
Figure 6 shows a schematic of a further variation of the lock device.
BEST MODE FOR CARRYING OUT THE INVENTION Number 1 in Figure 1 indicates as a whole a cable transportation system comprising a cable 2 extending along an endless path; a number of transportation units 3 (only one shown in Figure 1); and two turnaround stations 4 (only one shown in Figure 1) .
Turnaround station 4 comprises a rail 5 with three linear cams 6, 7, 8 extending along a given path; and a drive device (not shown) for driving transportation units 3 inside turnaround station 4.
Each transportation unit 3 is moved in a travelling direction Dl by cable 2 along the path portions between the two turnaround stations 4, and by the drive device
(not shown) along the path portions at turnaround stations 4.
Each transportation unit 3 extends in width crosswise to travelling direction Dl. In Figure 1, transportation unit 3 is shown being detached from cable 2, and engages rail 5 at turnaround station 4. Each transportation unit 3 comprises a suspension arm 9; a trolley 10 connected to suspension arm 9 and supporting a clamp 11 for selectively engaging cable 2 (as shown more clearly in Figures 2 and 3); a chair 12; and an articulated joint assembly 13 between chair 12 and trolley 10. In other words, suspension arm 9 is connected rigidly to trolley 10, but is hinged to chair
12 about an axis Al parallel to travelling direction Dl of transportation unit 3 and crosswise to the width of transportation unit 3.
Chair 12 comprises an inverted-U-shaped frame 14; a seat 15; a backrest 16; a safety bar 17 which rotates about an axis A2 ; and four footrest assemblies 18 fixed to safety bar 17. In the Figure 1 example, chair 12 has eight seats in a row, and is substantially symmetrical with respect to a plane of symmetry P. In the Figure 1 example, articulated joint assembly
13 is located between chair 12 and suspension arm 9, but may be located anywhere between chair 12 and trolley 10, e.g. between two portions of suspension arm 9.
Articulated joint assembly 13 comprises a pin 19 extending along axis Al; a flange 20 fixed to suspension arm 9; a flange 21 fixed to frame 14 of chair 12; a coil spring 22 between suspension arm 9 and frame 14 of chair 12; and a shock absorber 23 between suspension arm 9 and frame 14 of chair 12. In the Figure 1 example, shock absorber 23 is located inside coil spring 22.
In one embodiment of the present invention, articulated joint assembly 13 can be locked selectively in a given position by means of a lock device 30. More specifically, shock absorber 23 between chair 12 and trolley 10 can be locked in a given position to lock articulated joint assembly 13 as a whole. As shown more clearly in Figure 4, shock absorber 23 is a fluid shock absorber comprising a cylinder 24; and a piston 25 which slides inside cylinder 24 and divides cylinder 24 into two chambers 26, 27 communicating via a connecting circuit 28 with a constriction 29.
With reference to Figure 1, lock device 30 selectively locks shock absorber 23 and communication between chambers 26 and 27, and comprises a two-way valve 31 maintained in a normally-open position by a spring 32; and a Bowden cable 33 for overcoming the force of spring 32 (as shown schematically in Figure 4) .
As shown in Figure 1, lock device 30 comprises a lever 34, which is connected to Bowden cable 33, is hinged to suspension arm 9, and is operated by a linear cam 35.
In actual use, when occupied off-balance with respect to plane of symmetry P along the path portions between the two turnaround stations 4, chair 12 rotates about axis Al into a tilted position with respect to plane of symmetry P, so that suspension arm 9 and trolley 10 are shifted slightly with respect to the ideal position (Figure 1). As the off-balance transportation unit 3 enters turnaround station 4, trolley 10 engages rail 5 and produces shock, the degree of which depends on the deviation of trolley 10 from its ideal position, but which is anyway absorbed by suspension arm 9 and transmitted damped by articulated joint assembly 13 to prevent shock being transmitted to chair 12.
After the passengers alight and before other passengers board transportation unit 3 at turnaround station 4, chair 12 moves into a horizontal position, and articulated joint assembly 13 is locked by lock device 30 to lock chair 12 with respect to suspension arm 9 in a substantially horizontal position, and keep chair 12 in this position, even after the passengers have boarded, along the rest of the path at turnaround station 4.
In other words, articulated joint assembly 13 is locked along the path portion at turnaround station 4 extending between the passenger-alighting portion and the exit of turnaround station 4. Alternatively, the articulated joint assembly is locked before the passengers alight.
In the Figure 5 variation, transportation unit 3 is equipped with a lock device 36, and moves along a cable system 1 in which linear cam 35 is replaced by an electrically conductive strip 37. Instead of lever 34, Bowden cable 33, and valve 31, lock device 36 comprises a sliding electric contact 38, an electric cable 39, and a two-position, two-way, normally-open solenoid valve 40 respectively.
In this variation, solenoid valve 40 is controlled by an electric signal transmitted via strip 37, sliding electric contact 38, and electric cable 39. In the Figure 6 variation, transportation unit 3 comprises, instead of shock absorber 23, a rubber silentblock-type shock absorber 41; and, instead of lock device 30, a lock device 42 comprising linear cam 35, lever 34, Bowden cable 33, a brake clamp 43 connected to the suspension arm, and a rod 44 connected to chair 12 - in the example shown, to frame 14 of chair 12 - and engaged by brake clamp 43.
In this variation, Bowden cable 33 provides for closing the normally-open brake clamp 43, and for gripping rod 44 to lock chair 12 in a given position with respect to suspension arm 9.

Claims

1) A transportation unit for a cable transportation system (1) is moved in a travelling direction (Dl) and comprises a suspension arm (9); a trolley (10) connected to the suspension arm (9) and which engages a rail (5) at a turnaround station (4) of the cable transportation system (1); and a chair (12) connected to the suspension arm (9); the transportation unit (3) being characterized by comprising an articulated joint assembly (13) between the chair (12) and the trolley (10) .
2) A transportation unit as claimed in Claim 1, characterized in that the articulated joint assembly (13) comprises a hinge pin (19) substantially parallel to the travelling direction (Dl) .
3) A transportation unit as claimed in Claim 2, characterized in that the articulated joint assembly (13) comprises a first and a second flange (20, 21) connected to each other by the hinge pin (19) . 4) A transportation unit as claimed in any one of Claims 1 to 3, characterized in that the articulated joint assembly (13) comprises an elastic member (22) between the chair (12) and the trolley (10) .
5) A transportation unit as claimed in any one of the foregoing Claims, characterized by comprising a lock device (30; 36; 42) for locking the articulated joint assembly (13) and the chair (12) in a given position with respect to the trolley (10) . 6) A transportation unit as claimed in any one of the foregoing Claims, characterized by comprising a shock absorber (23) between the chair (12) and the trolley (10) . 7) A transportation unit as claimed in Claim 6, characterized in that the shock absorber (23) is a fluid shock absorber comprising a cylinder (24); and a piston (25) dividing the cylinder into two communicating chambers (26, 27) . 8) A transportation unit as claimed in Claim 7, characterized in that the shock absorber (23) comprises a circuit (28) connecting the communicating chambers (26, 27) of the cylinder (24); the transportation unit (3) comprising a lock device (30; 36) in turn comprising a valve (31; 40) located along the circuit (28) to selectively open and close the circuit (28).
9) A transportation unit as claimed in Claim 8, characterized in that the lock device (30; 36) comprises a spring (32) for keeping the valve (31; 40) open. 10) A transportation unit as claimed in Claim 9, characterized in that the lock device (30) comprises a lever (34), which is activated by a linear cam (8) at the turnaround station (4) and is connected to the valve (31) by a mechanical transmission (34) to selectively close the valve (31) and to lock the articulated joint assembly (13) in a given position.
11) A transportation unit as claimed in Claim 9, characterized in that said valve is a solenoid valve (40); the lock device (36) comprising an electric cable (39) connectable to a conductive strip (37) at the turnaround station (4) to transmit an opening signal to the solenoid valve (40) . 12) A transportation unit as claimed in Claim 5, characterized in that the lock device (42) comprises a brake clamp (43) which grips a rod (44) to lock said articulated joint assembly (13).
13) A cable transportation system (1) comprising a cable extending along an endless path between two turnaround stations (4) to move, in a travelling direction (Dl), a number of transportation units (3), each of which comprises a suspension arm (9); a trolley (10) connected to the suspension arm (9) and which engages a rail (5) at a turnaround station (4) of the cable transportation system (1); and a chair (12) connected to the suspension arm (9); the cable transportation system (1) being characterized in that each transportation unit (3) comprises an articulated joint assembly (13) between the chair (12) and the trolley (10) .
14) A system as claimed in Claim 13, characterized in that each transportation unit (3) comprises a lock device (30; 36; 42) for locking the chair (12) in a given position with respect to the trolley (10); said turnaround station (4) comprising actuating means (35; 37) for operating the lock device (30; 36; 42) .
PCT/EP2008/060029 2007-07-30 2008-07-30 Transportation unit for a cable transportation system, and cable transportation system comprising such a unit WO2009016211A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08786655A EP2185397B1 (en) 2007-07-30 2008-07-30 Transportation unit for a cable transportation system, and cable transportation system comprising such a unit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI20071556 ITMI20071556A1 (en) 2007-07-30 2007-07-30 TRANSPORT UNIT FOR ROPE TRANSPORTATION SYSTEM AND ROPE TRANSPORTATION SYSTEM INCLUDING SUCH TRANSPORTATION UNIT
ITMI2007A001556 2007-07-30

Publications (1)

Publication Number Publication Date
WO2009016211A1 true WO2009016211A1 (en) 2009-02-05

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ID=39952444

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/060029 WO2009016211A1 (en) 2007-07-30 2008-07-30 Transportation unit for a cable transportation system, and cable transportation system comprising such a unit

Country Status (3)

Country Link
EP (1) EP2185397B1 (en)
IT (1) ITMI20071556A1 (en)
WO (1) WO2009016211A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102501856A (en) * 2011-12-30 2012-06-20 北京起重运输机械设计研究院 Suspension carriage swing prevention device for aerial cableway
US11377127B2 (en) * 2017-04-03 2022-07-05 Leitner S.P.A. Station for a cable transportation system, cable transportation system comprising such station and method for operating such cable transportation system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3170412A (en) * 1963-05-06 1965-02-23 Ribiet Tramway Company Chair swing damper
FR2197363A5 (en) * 1972-08-25 1974-03-22 Montaz Mautino
EP1151903A2 (en) * 2000-04-25 2001-11-07 Innova Patent GmbH Chair for an aerial ropeway
EP1342635A1 (en) * 2002-03-07 2003-09-10 Innova Patent GmbH Movable operating unit for a cableway installation, comprising a damper against lateral oscillations
EP1640235A1 (en) * 2004-09-23 2006-03-29 Innova Patent GmbH Device for attaching a movable transport unit of a cableway installation to a suspension bar
WO2006077474A1 (en) * 2005-01-11 2006-07-27 High Technology Investments B.V. Aerial cableway means of transportation, particularly a chair of a chair lift

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3170412A (en) * 1963-05-06 1965-02-23 Ribiet Tramway Company Chair swing damper
FR2197363A5 (en) * 1972-08-25 1974-03-22 Montaz Mautino
EP1151903A2 (en) * 2000-04-25 2001-11-07 Innova Patent GmbH Chair for an aerial ropeway
EP1342635A1 (en) * 2002-03-07 2003-09-10 Innova Patent GmbH Movable operating unit for a cableway installation, comprising a damper against lateral oscillations
EP1640235A1 (en) * 2004-09-23 2006-03-29 Innova Patent GmbH Device for attaching a movable transport unit of a cableway installation to a suspension bar
WO2006077474A1 (en) * 2005-01-11 2006-07-27 High Technology Investments B.V. Aerial cableway means of transportation, particularly a chair of a chair lift

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102501856A (en) * 2011-12-30 2012-06-20 北京起重运输机械设计研究院 Suspension carriage swing prevention device for aerial cableway
US11377127B2 (en) * 2017-04-03 2022-07-05 Leitner S.P.A. Station for a cable transportation system, cable transportation system comprising such station and method for operating such cable transportation system

Also Published As

Publication number Publication date
ITMI20071556A1 (en) 2009-01-31
EP2185397A1 (en) 2010-05-19
EP2185397B1 (en) 2012-09-12

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