WO1998035102A1 - Vorrichtung zum bearbeiten von fahrbahnen, sowie vorrichtung zum erzeugen von schaumbitumen - Google Patents
Vorrichtung zum bearbeiten von fahrbahnen, sowie vorrichtung zum erzeugen von schaumbitumen Download PDFInfo
- Publication number
- WO1998035102A1 WO1998035102A1 PCT/EP1997/004143 EP9704143W WO9835102A1 WO 1998035102 A1 WO1998035102 A1 WO 1998035102A1 EP 9704143 W EP9704143 W EP 9704143W WO 9835102 A1 WO9835102 A1 WO 9835102A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bitumen
- nozzle
- water
- injection
- hot
- 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.)
- Ceased
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
- E01C23/065—Recycling in place or on the road, i.e. hot or cold reprocessing of paving in situ or on the traffic surface, with or without adding virgin material or lifting of salvaged material; Repairs or resurfacing involving at least partial reprocessing of the existing paving
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
- B05B15/52—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter for removal of clogging particles
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/12—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for distributing granular or liquid materials
- E01C19/16—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for distributing granular or liquid materials for applying or spreading liquid materials, e.g. bitumen slurries
- E01C19/17—Application by spraying or throwing
- E01C19/176—Spraying or throwing elements, e.g. nozzles; Arrangement thereof or supporting structures therefor, e.g. spray-bars
Definitions
- the invention relates to a device for processing roadways according to the preamble of claim 1, and a device for producing foamed bitumen for road construction machines according to the preamble of claim 2.
- Such devices are required for example in recycling machines for road construction.
- a road construction machine in which the invention can be used is described, for example, in WO 96/24725.
- a device for producing foamed bitumen for road construction machines, with at least one mixing device having an expansion chamber, in which hot bitumen can be brought together under pressure at a temperature of 180 ° C. and water via injection nozzles is known from WO 95/22661.
- the device has a heatable foam reactor and heatable feed and distribution lines, the lines being additionally insulated.
- Several nozzles are arranged side by side along a distribution line. This distribution line is over a pipeline network connected to a central foam reactor in which the bitumen foam is generated for all nozzles.
- An agitator is also arranged in this foam reactor.
- a disadvantage of the known device is that the bitumen foam has to travel a long way from the expansion chamber to the nozzles.
- the invention has for its object to provide a device for processing roadways, as well as a device for generating foamed bitumen for road construction machines, with which an exact dosage of the foamed bitumen is possible, and with which the cleaning and maintenance effort is reduced to a minimum.
- the invention advantageously provides that, in a device for processing roadways, a device for producing foamed bitumen with several mixing devices arranged next to one another with foam outlet nozzles is arranged on the hood of the work roll, so that the foamed bitumen emerging from the foam outlet nozzles is sprayed into the Working Chamber of the Ar beitswalze is directed and interferes with the granulated building material mixture from the work roll.
- the hot bitumen is mixed from a bitumen tank via supply lines and a bitumen injection nozzle with water supplied from a water tank via a water injection nozzle in an expansion chamber of the mixing device.
- Injecting the bitumen foam directly into the working chamber of the work roll has the advantage that the foamed bitumen can be mixed directly into the granulated building material mixture before the foam collapses.
- the foamed bitumen is only generated shortly before it exits the foam outlet nozzles in an expansion chamber of a mixing device provided separately for each foam outlet nozzle.
- the generation of the foamed bitumen shortly before it emerges from the foam outlet nozzle advantageously enables the foamed bitumen to be metered precisely.
- the injection nozzle for hot bitumen has a plunger for the nozzle opening which is adapted to the nozzle cross section and which can be driven by a controller for periodic cleaning or closing of the nozzle opening.
- the plunger is pushed through the nozzle 1 to 2 times per minute to clean the nozzle, so that the nozzle cross-section is always kept free. If the nozzle is to be closed, the plunger remains in the nozzle cross section.
- Each nozzle can be controlled individually so that the working width, e.g. is selectable when crossing a lane several times.
- a microprocessor control regulates the flow of hot bitumen and water depending on the speed of advance of the road construction machine. In this way it is ensured that the metering takes place with high accuracy and depending on the driving speed and that the ratio of foamed bitumen and granulated building material mixture is kept constant.
- the water tank is arranged on the chassis.
- a water tank arranged on the chassis has the advantage that no separate water supply is required.
- the water in the water tank can also be used for other tasks, e.g. can be used to moisten the soil when compacting a road.
- the expansion chamber is preferably circular in cross section, the butiumene injection nozzle being arranged coaxially with the expansion chamber.
- the injection or injection devices for the water and / or the air nozzles water or air radially or tangentially into the free jet of the hot air emerging from the bitumen injection nozzle. eat bitumen. This creates a strong swirl in the expansion chamber with which an optimal foam quality can be generated.
- the expansion chamber has an eccentrically arranged foam outlet nozzle.
- Such an eccentrically arranged nozzle increases the turbulence of the foam bitumen and enables a higher expansion number with a longer half-life of the foam.
- the mixing devices can be heated.
- the heating is carried out by thermostatically controlled heating devices that maintain the optimal operating temperature before and during use, even in the event of interruptions.
- a time-consuming rinsing of the mixing devices with the foam outlet nozzles can be omitted at the end of the work.
- the generator for generating the heating current generates the full heating voltage when the drive motor is idling and keeps it constant even at higher speeds of the drive motor.
- the generator has a hydraulic drive which can be set to a constant drive speed with the aid of a flow control valve.
- Fig. 1 a road construction machine
- Fig. 2 shows a schematic representation of the microprocessor control for the foam generation process
- Fig. 3 shows a flow diagram of the foamed bitumen components
- Fig. 4 the tappet control
- Fig. 5 a mixing device.
- Fig. 1 shows the device for processing roadways with a machine frame 1 carried by two trolleys 2 and a driving station 3 consisting of a driver's cab.
- the undercarriages 2 have two undercarriage axles which can be steered jointly or optionally individually at the front and rear ends of the machine frame 1.
- a work roll 4 is arranged under a hood 8, which limits the work chamber 6 of the work roll 4 upwards and to the sides.
- the hood 8 connected to the machine frame 1 has breaker bars 19 which can be pivoted about an axis parallel to the roll axis of the work roll 4.
- breaker bars 19 which can be pivoted about an axis parallel to the roll axis of the work roll 4.
- the hood 8 has a device 10 for producing foamed bitumen on its upper region.
- bitumen hot at around 180 ° C is mixed with cold water. This causes the bitumen to foam, with the original volume of the components being around that Increased 20 times.
- bitumen foam can be injected evenly into the working space 6 via a plurality of foam outlet nozzles 14 running parallel to the axis of the work roll 4 and thereby mixed into the granulated building material mixture.
- the device 10 for producing foamed bitumen consists in particular of, for example, 16 mixing devices 12 arranged next to one another, which are connected to one another by a common supply line 16, 42 for hot bitumen.
- the mixing devices 12 have a bitumen injection nozzle 18 which in the open state injects a bitumen free jet into an expansion chamber 26. Orthogonally to this free jet, water is injected radially or tangentially to the expansion chamber 26, which is circular in cross section, via a water injection nozzle 22 and air via an air injection device 24.
- a strong swirling of the expanding foam volume is achieved in the expansion chamber, as a result of which a high expansion number of the foam bitumen and a longer half-life can be achieved.
- the air is blown in at a pressure of 4 to 5 bar.
- the foam outlet nozzle 14 is arranged eccentrically to the expansion chamber 26 and to the bitumen injection nozzle 18, whereby the swirling in the expansion chamber 26 is further increased.
- the bitumen injection nozzle is periodically cleaned with the aid of a plunger 30, the plunger is driven microprocessor-controlled by a pneumatic drive device 32.
- the plunger 30 can also be used to close the bitumen injection nozzle 18 if, for example, the foamed bitumen is to be sprayed on in a reduced width. This is useful, for example, for multi-lane, overlapping work.
- Fig. 2 is a schematic representation of the microprocessor control for controlling the foam formation process and the addition amounts, as well as the dosage of the foam bitumen.
- the microprocessor 36 is connected to an electronic input / output unit 38 with a display 39.
- the bitumen addition in% by weight and the water addition for the foaming process in% of the amount of bitumen can be set on the input / output unit 38.
- the spray width can be set for overlapping work, ie individual foam outlet nozzles 14 can be switched off if desired. All operating and work data are shown on the display 39.
- the microprocessor 36 is also connected to a printer 40 which prints out the work data for the purpose of documentation. Via a wheel sensor 41, the microprocessor 36 receives a speed signal proportional to the speed of advance of the machine, so that the foam bitumen components can be dosed as a function of the driving speed.
- the microprocessor 36 generates a control signal for the drive motors 21, 23 for the bitumen suction pump for bitumen 20, and the water suction pump 24.
- the effective addition amounts of bitumen and water are reported back by the pumps 20 and 24 to the microprocessor for the purpose of regulation.
- the pulse-clocked nozzle cleaning in each mixing device 12 is also controlled via a signal line 28.
- a device for feeding in a water-cement suspension 46 can be provided, which can be arranged on the hood 8 parallel to the device for producing foamed bitumen 10.
- the drive motor 50 of a suction pump 52 of the injection device for the water-cement suspension 46 is controlled via a signal line 48.
- the connecting part 19 for the hot bitumen supply receives hot bitumen from the bitumen tank arranged on the chassis 2.
- the suction pump 20 for bitumen is controlled by the microprocessor 36.
- a temperature sensor 23 monitors the temperature of the hot bitumen in the feed line 16.
- the hot bitumen is filtered in a bitumen filter 25.
- a pressure sensor 27, which monitors the operating pressure, is arranged behind the bitumen filter 25.
- the feed line 16 opens into a distributor line 42, which can also be designed as a ring line, so that bitumen that is not required can be recirculated into the bitumen tank.
- the water pump 24 which draws water from a water tank located on the chassis 2, the water is fed to the water injection nozzles 22 via a water supply line 43 and a water valve 45 for two mixing devices 12. It can be provided that one water valve 45 in each case two non-adjacent mixing units directions 12 supplied.
- Compressed air is supplied via a compressor 28 via an air supply line 44 and the air injection devices 24 under a pressure of, for example, 4 to 5 bar.
- a separate mixing device 12 can be arranged at a lateral distance from the, for example, 16 mixing devices 12 arranged alongside one another along the distributor / ring line 42 for hot bitumen in such a way that it projects laterally beyond the work roll 4.
- This further mixing device is used as a test nozzle in order to be able to carry out a quality check with regard to the foam quality at the beginning or during operation.
- This test nozzle can be controlled manually separately.
- Compressed air for cleaning the bitumen injection nozzle is also branched off from the same air compressor 28 or a separate compressor.
- the compressed air is supplied to the pneumatic drive devices 32 for the plunger 30 via pneumatic valves 33.
- the bitumen injection nozzle 18 of the test nozzle is also cleaned in the same cycle.
- the bitumen suction pump 20, the feed lines 16, and the distribution and ring line 42, as well as the mixing devices themselves, in particular the bitumen injection nozzle 18, are provided with heating elements and temperature sensors.
- the temperature sensors give a temperature signal to the microprocessor 36 or to a thermostat control.
- the suction pump for bitumen, the feed lines 16, 42 and the mixing devices 12 are also insulated with thick walls in order to reduce heat losses and to optimize the maintenance of the optimal processing temperature.
- a power generator is powered by a hydraulic motor.
- the hydraulic motor for the generator receives its drive energy from a hydraulic pump, which is coupled to the internal combustion engine of the road construction machine.
- the hydraulic motor for the power generator already generates an energy necessary for heating the device 10 for producing foamed bitumen when the internal combustion engine is idling.
- the microprocessor-controlled device 10 for producing foamed bitumen allows the operation of all functions and the preselection of the addition quantities for hot bitumen, water and air, as well as the work-relevant parameters from the operator's station 3.
- the microprocessor control system also enables the addition quantities to be regulated in proportion to the speed of advance.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Road Paving Machines (AREA)
- Working-Up Tar And Pitch (AREA)
Abstract
Description
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/367,041 US6565281B2 (en) | 1997-02-08 | 1997-07-30 | Device for paving roadways and device for producing foamed bitumen |
| DE59706348T DE59706348D1 (de) | 1997-02-08 | 1997-07-30 | Vorrichtung zum bearbeiten von fahrbahnen |
| AU38501/97A AU3850197A (en) | 1997-02-08 | 1997-07-30 | Device for paving roadways and device for producing foamed bitumen |
| EP97935553A EP0960239B1 (de) | 1997-02-08 | 1997-07-30 | Vorrichtung zum bearbeiten von fahrbahnen |
| NO19993561A NO315007B1 (no) | 1997-02-08 | 1999-07-21 | Anordning for bearbeiding av veibaner |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29702162U DE29702162U1 (de) | 1997-02-08 | 1997-02-08 | Vorrichtung zum Bearbeiten von Fahrbahnen, sowie Vorrichtung zum Erzeugen von Schaumbitumen |
| DE29702162.1 | 1997-02-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1998035102A1 true WO1998035102A1 (de) | 1998-08-13 |
Family
ID=8035658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP1997/004143 Ceased WO1998035102A1 (de) | 1997-02-08 | 1997-07-30 | Vorrichtung zum bearbeiten von fahrbahnen, sowie vorrichtung zum erzeugen von schaumbitumen |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US6565281B2 (de) |
| EP (1) | EP0960239B1 (de) |
| AU (1) | AU3850197A (de) |
| DE (2) | DE29702162U1 (de) |
| NO (1) | NO315007B1 (de) |
| WO (1) | WO1998035102A1 (de) |
| ZA (1) | ZA98905B (de) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1052334A3 (de) * | 1999-05-12 | 2002-03-06 | MARINI S.p.A. | Mobiler Mixer für einen Kaltrecyclingzug für Asphaltstrassenbelag |
| US6887013B2 (en) * | 2002-09-05 | 2005-05-03 | Wirtgen Gmbh | Device for treating soils or road surfaces |
| JP2018193701A (ja) * | 2017-05-15 | 2018-12-06 | 常陸舗道有限会社 | アスファルトスプレイヤ |
| WO2021037961A1 (en) | 2019-08-28 | 2021-03-04 | Basf Se | Process for preparing foamed polymer-modified bitumen compositions |
| WO2025224579A1 (en) * | 2024-04-23 | 2025-10-30 | Simex Engineering S.R.L. | Control system for controlling a scarification and recycling assembly |
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| GB2356628B (en) * | 1999-11-29 | 2004-04-28 | Innovation Holdings | Improvements in and relating to concrete production |
| WO2002066744A1 (fr) * | 2001-02-21 | 2002-08-29 | Secmair | Procede et vehicule pour l'execution d'un enduit superficiel sur une chaussee |
| ATE319011T1 (de) * | 2001-12-16 | 2006-03-15 | Leutert Herbert | Verfahren zum befördern von fliessfähigen baustoffen |
| AU2002360973A1 (en) * | 2001-12-16 | 2003-06-30 | Leutert, Herbert | Method and device for transporting a flowable building material |
| DE10213017A1 (de) | 2002-03-22 | 2003-10-09 | Wirtgen Gmbh | Verfahren zum Optimieren eines Schneidprozesses bei Straßenfräsmaschinen, sowie Fräsmaschine zum Bearbeiten von Straßendecken |
| US7591607B2 (en) * | 2005-03-01 | 2009-09-22 | Hall David R | Asphalt recycling vehicle |
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| US7712996B2 (en) * | 2006-07-14 | 2010-05-11 | Hall David R | Fogging system for an asphalt recycling machine |
| DE102006062760A1 (de) * | 2006-08-31 | 2008-07-17 | Bundesland Mecklenburg-Vorpommern, vertreten durch den Betrieb für Bau und Liegenschaften M-V | Verfahren zur Sanierung einer Fahrbahn, vorzugsweise aus Beton |
| US7854566B2 (en) * | 2006-12-01 | 2010-12-21 | Hall David R | Nozzles incorporated into a milling machine |
| US8485756B2 (en) * | 2006-12-01 | 2013-07-16 | David R. Hall | Heated liquid nozzles incorporated into a moldboard |
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| DE102006062129B4 (de) | 2006-12-22 | 2010-08-05 | Wirtgen Gmbh | Straßenbaumaschine sowie Verfahren zur Messung der Frästiefe |
| US7927413B2 (en) * | 2007-04-17 | 2011-04-19 | Astec, Inc. | Method and apparatus for making asphalt concrete using foamed asphalt cement |
| US8177456B2 (en) * | 2007-12-21 | 2012-05-15 | Asphalt Zipper, Inc. | Pavement milling assembly |
| DE102010013982A1 (de) * | 2010-04-06 | 2011-10-06 | Bomag Gmbh | Vorrichtung zum Erzeugen von Schaumbitumen und Verfahren zu deren Wartung |
| DE102010014904A1 (de) * | 2010-04-14 | 2011-10-20 | Bomag Gmbh | Einsprüheinrichtung für eine Baumaschine und Verfahren zum Betrieb einer Einsprüheinrichtung |
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| DE102010035129A1 (de) | 2010-08-23 | 2012-02-23 | Bomag Gmbh | Einsprüheinrichtung für eine Baumascine zur Bodenbearbeitung, Baumaschine mit einer Einsprüheinrichtung und Verfahren zum Betrieb einer Einsprüheinrichtung |
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| US20120280558A1 (en) * | 2011-05-06 | 2012-11-08 | Hall David R | Foam Configured to Suppress Dust on a Surface to be Worked |
| DE102011115325A1 (de) * | 2011-10-07 | 2013-04-11 | Bomag Gmbh | Rotorgehäuse für eine Fräsvorrichtung zur Bodenbearbeitung, Fräsvorrichtung und Verfahren zur Reinigung eines Rotorgehäuses |
| CN103806363A (zh) * | 2012-11-09 | 2014-05-21 | 同济大学 | 一种高效泡沫沥青发泡装置 |
| DE102012221654A1 (de) * | 2012-11-27 | 2014-05-28 | Wirtgen Gmbh | Verfahren zum Behandeln von Schichten, sowie eine Baumaschine, insbesondere einen Bodenstabilisierer oder Recycler |
| CA2894602A1 (en) * | 2012-12-12 | 2014-06-19 | Ammann Schweiz Ag | Method and system for producing a binder foam for producing asphalt |
| DE102013013304A1 (de) | 2013-08-12 | 2015-02-12 | Wirtgen Gmbh | Selbstfahrende Baumaschine zum Bearbeiten von Fahrbahnen oder Bodenoberflächen und Verfahren zum Kühlen der Fräswerkzeuge einer Fräswalze einer selbstfahrenden Baumaschine |
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| US20170190618A1 (en) * | 2015-12-31 | 2017-07-06 | Honeywell International Inc. | Foamed asphalt compositions, recycled asphalt composition including the same, asphalt pavement including the same, and methods of forming asphalt pavement using the same |
| USD800796S1 (en) * | 2016-08-25 | 2017-10-24 | Bomag Gmbh | Recycler |
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- 1997-07-30 EP EP97935553A patent/EP0960239B1/de not_active Expired - Lifetime
- 1997-07-30 DE DE59706348T patent/DE59706348D1/de not_active Expired - Lifetime
- 1997-07-30 AU AU38501/97A patent/AU3850197A/en not_active Abandoned
- 1997-07-30 US US09/367,041 patent/US6565281B2/en not_active Expired - Lifetime
- 1997-07-30 WO PCT/EP1997/004143 patent/WO1998035102A1/de not_active Ceased
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1052334A3 (de) * | 1999-05-12 | 2002-03-06 | MARINI S.p.A. | Mobiler Mixer für einen Kaltrecyclingzug für Asphaltstrassenbelag |
| US6887013B2 (en) * | 2002-09-05 | 2005-05-03 | Wirtgen Gmbh | Device for treating soils or road surfaces |
| JP2018193701A (ja) * | 2017-05-15 | 2018-12-06 | 常陸舗道有限会社 | アスファルトスプレイヤ |
| WO2021037961A1 (en) | 2019-08-28 | 2021-03-04 | Basf Se | Process for preparing foamed polymer-modified bitumen compositions |
| US12600671B2 (en) | 2019-08-28 | 2026-04-14 | Basf Se | Process for preparing foamed polymer-modified bitumen compositions |
| WO2025224579A1 (en) * | 2024-04-23 | 2025-10-30 | Simex Engineering S.R.L. | Control system for controlling a scarification and recycling assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| AU3850197A (en) | 1998-08-26 |
| EP0960239A1 (de) | 1999-12-01 |
| NO315007B1 (no) | 2003-06-23 |
| DE29702162U1 (de) | 1998-06-10 |
| US6565281B2 (en) | 2003-05-20 |
| NO993561D0 (no) | 1999-07-21 |
| EP0960239B1 (de) | 2002-02-06 |
| US20010022919A1 (en) | 2001-09-20 |
| ZA98905B (en) | 1998-08-06 |
| NO993561L (no) | 1999-10-06 |
| DE59706348D1 (de) | 2002-03-21 |
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