EP0942883B1 - Dispositif de type canon a air comprime pour eviter la formation d'amas de materiau dans des produits en vrac situes dans des cuves de reaction et procede correspondant - Google Patents

Dispositif de type canon a air comprime pour eviter la formation d'amas de materiau dans des produits en vrac situes dans des cuves de reaction et procede correspondant Download PDF

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Publication number
EP0942883B1
EP0942883B1 EP98951489A EP98951489A EP0942883B1 EP 0942883 B1 EP0942883 B1 EP 0942883B1 EP 98951489 A EP98951489 A EP 98951489A EP 98951489 A EP98951489 A EP 98951489A EP 0942883 B1 EP0942883 B1 EP 0942883B1
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EP
European Patent Office
Prior art keywords
compressed air
storage container
piston
valve
control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP98951489A
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German (de)
English (en)
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EP0942883A1 (fr
Inventor
Udo Leibling
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.)
AGRICHEMA MATERIALFLUSSTECHNIK GMBH & CO. KG
Original Assignee
Agrichema Materialflusstechnik & Co KG GmbH
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Publication date
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Publication of EP0942883A1 publication Critical patent/EP0942883A1/fr
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Publication of EP0942883B1 publication Critical patent/EP0942883B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/54—Large containers characterised by means facilitating filling or emptying
    • B65D88/64—Large containers characterised by means facilitating filling or emptying preventing bridge formation
    • B65D88/70—Large containers characterised by means facilitating filling or emptying preventing bridge formation using fluid jets
    • B65D88/703—Air blowing devices, i.e. devices for the sudden introduction of compressed air into the container

Definitions

  • the invention relates to a device and a method according to the preamble of claim 1 or claim 11.
  • Air cannons which are capable of Blow out compressed air in a controlled manner in order to generate correspondingly strong impact forces are used to remove material build-up or material build-up of bulk goods in bunkers, silos and similar reaction vessels used.
  • air cannons are particularly numerous in the cement industry used.
  • These blow-off devices or air cannons are based on the principle that compressed air stored in a storage container suddenly is blown off via a blow-out opening.
  • the control of the blow-off process is usually done through a quick exhaust valve located inside the storage tank or can be arranged outside the storage container.
  • Quick exhaust valves have a piston guided in a cylinder, which closes the air cannon's exhaust opening in the closed position.
  • the object of the invention is therefore to provide a method and a device create, with which the compressed air used for the launches towards can optimize for a reduction in volume.
  • this object is achieved by positive-controlled closing the piston of the quick exhaust valve after removal of the air blast peak by at least one third of the maximum value generated when the device was fired the air force.
  • These pressure ratios are dependent on the size of the storage container used within a period of e.g. 50-150 msec. reached.
  • the residual pressure in the storage tank is then included a value of 4 - 6 bar, depending on the individually adapted positive control of the piston. This results in significant savings in compressed air.
  • the air cannon can be operated in comparatively short time units be shot several times, especially with stubborn material build-up is of considerable advantage.
  • Such a positive control of the piston of the quick exhaust valve leaves achieve according to the device according to claim 1 in that the piston vestibule of the quick exhaust valve from the compressed air supply to the storage tank is uncoupled, i.e. regardless of the compressed air supply to the storage tank is pressurized with compressed air.
  • the piston vestibule of the quick exhaust valve from the compressed air supply to the storage tank is uncoupled, i.e. regardless of the compressed air supply to the storage tank is pressurized with compressed air.
  • the compressed air for filling the storage tank decoupled from the piston vestibule feed a choke into the adapter housing and from there to the storage tank.
  • this has the advantage that at Switchover of the quick-way valve from the venting position for firing in the position for the supply of compressed air in the piston vestibule in the Initial phase only throttled compressed air is fed into the adapter housing, so the compressed air in the initial phase in the control line to the piston antechamber pending.
  • a 2-way valve can also be used instead of a throttle, which is closed in the initial phase and then opened, however the force-controlled piston movement of the quick exhaust valve the compressed air that is always supplied via the throttle is in no way taken into account of the large volume of the storage container.
  • Another The advantage of the invention is that the piston is already at a low differential pressure can be operated in the closed position, with a low differential pressure turn in very cheap for a sudden closing impact in the shortest possible time.
  • the lower pressure / liter volume can be significantly faster be vented via the quick exhaust valves than at full operating pressure it is possible.
  • distances between the protective box in which the 3/2-way valve for controlling the Piston vestibule of the air blast devices are protected and the Quick exhaust control valve on the adapter housing of more than 30 m without significant delays in the switching operations can be bridged.
  • FIG. 1 shows a compressed air storage container 1 in a purely schematic manner Representation, at the flange-like outlet 2 as a T-shaped pipe socket formed adapter housing 3 via a flange 4 and screw connections 5 is attached.
  • a generally designated 6 Quick exhaust valve added which is shown in Fig. 1 Functional position with its piston bottom 7 an annular blow-out opening 8 of the adapter housing closes, on which one is only schematic and Air nozzle 9 shown in dashed lines above screw connections and the like is attached.
  • the quick exhaust valve 6 is in the exemplary embodiment shown as an example formed from a two-part piston 10a and 10b by a central bolts clamped together to form a uniform piston 11 are within a cylinder tube arranged in the adapter housing 3 12 is recorded and guided.
  • the cylinder tube 12 is within the adapter housing 3 with one end in a bore 13 and with its other end fastened in a via ribs 14 to the adapter housing 3 Ring 15 added.
  • the end of the discharge opening 8 removed Adapter housing 3 is closed by a cover 16, which is by screws 17 screwed to the adapter housing 3 and with one into the cylinder tube 12 engaging damping ring 18 is provided, the return movement of the piston 11 dampens and limits.
  • cover 16 cylinder tube 12 and piston top 19 the piston antechamber 20 of the quick exhaust valve 6 is limited, in which control compressed air via a control line indicated only schematically 21 is supplied via the opening 22.
  • control line 21 which at 23 from the compressed air supply line 24 to the storage tank 1 branches, there is a check valve 25, which is only one Flow of control air in the direction of arrow of line 21 allows a storage pot 26 with a sufficiently dimensioned storage volume to provide a sufficient operating pressure to close the piston 11 of the quick exhaust valve 6, as well as a multi-way valve, here a 3/2-way solenoid valve 27, which in one position supplies compressed air via the control line 21 to the piston antechamber 20 and in a different switching position, that is the venting position, causes the piston antechamber 20 to be vented.
  • a check valve 25 which is only one Flow of control air in the direction of arrow of line 21 allows a storage pot 26 with a sufficiently dimensioned storage volume to provide a sufficient operating pressure to close the piston 11 of the quick exhaust valve 6, as well as a multi-way valve, here a 3/2-way solenoid valve 27, which in one position supplies compressed air via the control line 21 to the piston antechamber 20 and in a different switching
  • the compressed air is from a suitable compressed air reservoir, not shown via a 3/2-way ball valve 28 to the storage tank 1 via a throttle 29 supplied in the illustrated embodiment by a in the adapter housing 3 introduced hole is formed and from there passes around the cylinder 12 of the quick exhaust valve 6 around the outlet 2 in the compressed air storage container 1.
  • the compressed air is supplied to the storage tank 1 through the opening 22 so that the piston vestibule 20 under operating pressure set and thus the piston 11 in the closed position shown in Fig. 1 is moved down to the blow-out opening 8.
  • the solenoid valve 27 switched to the venting position so that the vestibule 20 is vented. This prevents that provided in line 30 but not shown here Check valve an outflow of compressed air from the storage tank 1 via the opening 22.
  • the solenoid valve 27 is switched so that compressed air enters the piston antechamber 20 is supplied. Only then is the piston 11 closed possible if the storage container 1 is essentially empty, otherwise over the effective piston ring surface 31 is at a corresponding force that the Piston 11 presses upwards against the damping ring 18. This is because because because the compressed air supplied to the vestibule 20 has the path of least resistance searches and via the branch 30 in the direction of the storage container 1 flows so that the pressure in the antechamber 20 is insufficient, which is beyond the effective To overcome the piston surface 31 force applied via the storage container, to bring the piston 11 into the closed position. That is, only after extensive The piston 11 can be emptied into its closed position when the storage container 1 is emptied 1 are brought.
  • the piston antechamber 20 is entirely decoupled from the compressed air loading of the storage container 1, since the Compressed air for filling the storage container 1 via the compressed air line 24 and the throttle 29 is supplied separately from the piston antechamber 20, which in turn separate from the compressed air supply to the storage tank 1 control air via the Control line 21 and the opening 22 is supplied.
  • Fig. 2 shows the venting position of the device, for clarification the compressed air flows to the blow-out opening 8 are marked with an arrow. If the solenoid valve 27 is now switched over in this position, the full one is in position Operating pressure in the piston antechamber 20 from the storage pot 26, since an overflow the pressure from the piston antechamber 20 via the conventional line 30 to storage tank 1 is not possible. At the same time is through the throttle 29th ensures that the compressed air flow is the path of least resistance goes, first fully in the direction of the piston vestibule 20 via the control line 21 acts and only throttled overflow through the throttle 29 in the direction the storage container 1 takes place.
  • the positively controlled piston 11 according to the device according to the invention can this regardless of whether the storage container 1 is completely emptied is or not, be brought into the closed position, i.e. after 50-150 msec. and not only after 300 - 400 msec. if the storage container 1 largely is emptied.
  • FIG. 7 depends the course of the air blast force from different volumes of the storage container over time during device firing.
  • the curves has in common that the maximum air force at the start of the launch Device is present, and the air impulse force after approx. 20 - 25 msec. degrades, So the actual air blast is accomplished in the initial phase of the launching process becomes.
  • the positively controlled piston it is now possible to use the piston of the quick exhaust valve after this effective phase and not to wait until the storage tank is completely empty, so that when closing the piston after the initial phase of 50 - 150 msec. just a fraction of compressed air must be supplied to the container 1 until it for the Launch process is ready again.
  • the force-controlled Piston the phase of closing the piston of the quick exhaust valve determine chosen, so that expediently Solenoid valve 27 is provided with an electrical clock control, which one Closing or switching of the valve in a clock cycle of 50 msec. up to 1 sec variably enabled.
  • the storage pot 26 provided in the control line 21 has the advantage that the full operating pressure in the piston vestibule 20 even when it is in the Compressed air supply line 24 to pressure fluctuations or malfunctions, what reliable operation is very important.
  • a 2-way valve could also be provided, which the supply of compressed air via the compressed air supply line 24 into the adapter housing 3 closes briefly, so that the pressure in the control line 21 Piston antechamber 20 for the purpose of transferring the piston 11 into the closed position is built up, and then opens with a time delay and finally compressed air leads to storage tank 1.
  • FIG 3 shows the operating position of the device in the container forced ventilation, in which the ball valve 28 is switched to the venting position, whereby the compressed air supply is interrupted or blocked and at the same time the compressed air in the container 1 is discharged to the outside via the throttle 29 can be.
  • Fig. 4 shows a system with a series of devices for the sudden blowing out of compressed air, also called air cannons, which are designated in Fig. 4 with SB1, SB2, SB3, SB4, etc. and can be fired one after the other.
  • the compressed air supply P V takes place at 40 from the network, the compressed air being supplied to a control unit, generally designated 41, which is shown in more detail with reference to FIG. 5.
  • the pressure P V is applied via a ring line 41 and is conducted via branch lines 42 to the individual air cannons SB1 etc. and at 43 into the adapter housing for filling the storage containers. 6, the line leading to the choke 29 being designated by 43.
  • Fig. 5 shows that the compressed air via the central line 40 via a check valve 44 to a 3/2-way ball valve 45 and from there via a filter regulator 46 is led to line 41, the compressed air flow of Pollutants are cleaned from the air and the condensed water is also removed becomes.
  • the line 41 then leads to the individual air cannons SB1-SB4 etc.
  • air is transferred via the T-piece 47 into a control line 48
  • Check valve 54 branched off and fed to a common storage pot 49, from where the control air is preferably via an additional filter regulator 50 and a control line 48 is routed to the solenoid valves located in a solenoid valve cabinet 51 (Fig. 4) are arranged.
  • the common storage pot 49 occurs the location of individual control pots 26 of FIGS. 1 and 2, the T-piece 47 with the branch point 23, the check valve 54 with the check valve 25, the common storage pot 49 with the storage pot 26 and the solenoid valves 51 in the protective housing with the quick exhaust control valve 53 with the solenoid valve 27 of the embodiment according to FIGS. 1 and 2 are comparable.
  • the common storage pot 49 here is analogous to the storage pot 26 in FIG 1 and 2 regardless of fluctuations or disturbances in the compressed air network sufficient compressed air to control the piston chambers of the air cannons ready.
  • This system can also cover long distances of up to 30 or 50 m can be bridged to the air cannons without affecting the operation of the air cannons.
  • Air cannon difficulties can occur when multiple devices are short shoot in a row. These difficulties arise because the Air cannons all over the main compressed air network in the manner of communicating tubes are connected. If there are several air cannons in a row shot down, they get from the compressed air network not enough compressed air supplied.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Air Transport Of Granular Materials (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Crushing And Grinding (AREA)

Claims (11)

  1. Dispositif de soufflage intermittent d'air comprimé, afin d'empêcher le collage ou l'accumulation de matière de produits en vrac contenus dans des réservoirs, des trémies, des silos ou analogues de la technologie des procédés industriels, comprenant un réservoir de stockage d'air comprimé (1), alimenté en air comprimé à partir d'un réservoir par l'intermédiaire d'une canalisation d'introduction (24), un orifice de soufflage (8), pour le soufflage intermittent d'air comprimé à partir du réservoir de stockage (1), et une soupape d'échappement rapide (6), qui est disposée sur le réservoir de stockage (1) et présente un piston (11) logé dans un cylindre (12), piston qui est pressé contre l'orifice de soufflage (8) et ferme celui-ci lors de l'établissement d'une pression appropriée dans une antichambre de piston (20) et qui est soulevé de l'orifice de soufflage (8) de façon intermittente lors de la mise à l'air de l'antichambre de piston (20), de sorte que l'air comprimé contenu dans le réservoir de stockage (1) sort de façon intermittente par l'intermédiaire de l'orifice de soufflage (8), l'antichambre de piston (20) de la soupape d'échappement rapide (6) pouvant être alimentée en air comprimé séparément de l'introduction d'air comprimé vers le réservoir de stockage (1), caractérisé en ce que le dispositif est configuré d'une manière telle que la fermeture du piston (11) de la soupape d'échappement rapide (6) peut se dérouler, en particulier, plusieurs fois avant de vider complètement le réservoir de stockage d'air comprimé (1), par commande pneumatique.
  2. Dispositif selon la revendication 1, dans lequel, en particulier, la soupape d'échappement rapide (6) est disposée à l'extérieur du réservoir de stockage d'air comprimé (1) dans un logement d'adaptateur (3) relié à une sortie (2) du réservoir de stockage (1), caractérisé en ce que l'air comprimé est introduit dans l'antichambre de piston (20) par l'intermédiaire d'une vanne multivoie (27) dans une ligne de commande (21), séparément de la canalisation d'introduction d'air comprimé (24) vers le réservoir de stockage (1), la canalisation d'introduction (24) vers le réservoir de stockage (1) étant découplée de l'antichambre de piston (20) et débouchant dans le logement d'adaptateur (3) à l'extérieur du cylindre (12) de la soupape d'échappement rapide (6), et se trouvant, indépendamment de la position du piston (11) de la soupape d'échappement rapide (6), en communication fluide directe avec la sortie (2) du réservoir de stockage (1).
  3. Dispositif selon la revendication 1 ou 2,
    caractérisé en ce que, dans la ligne de commande (21) vers l'antichambre de piston (20), un ballon de stockage (26) est disposé avant la vanne multivoie (27), lequel est destiné à maintenir une pression de service prédéterminée pour la fermeture du piston (11) de la soupape d'échappement rapide (6) et qui est isolé de la canalisation d'introduction d'air comprimé (24) par un clapet anti-retour.
  4. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la canalisation d'introduction d'air comprimé (24) vers le réservoir de stockage (1) aboutit par l'intermédiaire d'un étranglement (29) ou d'une vanne multivoie dans le logement d'adaptation (3).
  5. Dispositif selon la revendication 4, caractérisé en ce que l'étranglement (29) est formé d'un trou dans le logement d'adaptateur d'environ 6 à 8 mm de diamètre pour une pression de système d'environ 8 à 10 bars.
  6. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une vanne multivoie (24) est prévue avec une position de mise à l'air dans la canalisation d'introduction d'air comprimé (24) afin de commander une mise à l'air du réservoir.
  7. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la fermeture du piston (11) de la soupape d'échappement rapide (6) se produit à une pression dans la gamme allant d'environ 4 à 6 bars dans le réservoir de stockage (1).
  8. Dispositif selon la revendication 7, caractérisé en ce que la fermeture du piston (11) de la soupape d'échappement rapide (6) se produit par l'intermédiaire d'une commande de cycle, que l'on peut régler de façon variable entre 50 ms et 1 seconde.
  9. Dispositif selon l'une quelconque des revendications précédentes, dans lequel le dispositif fait partie d'un certain nombre de dispositifs selon l'une quelconque des revendications 1 à 8, qui sont alimentés par l'intermédiaire d'une canalisation d'introduction d'air comprimé commune (41), caractérisé en ce que l'air comprimé est introduit par une unité de commande (41), dans laquelle l'air de commande pour les antichambres de pistons des dispositifs est détournée par l'intermédiaire d'un clapet anti-retour (54) et introduit dans le dispositif par l'intermédiaire d'un ballon de stockage commun (49) vers les vannes multivoies individuelles (51, 53) pour commander les antichambres de piston, qui, de préférence sont logées dans une armoire (51) à partir de laquelle les lignes de commande (52) conduisent aux dispositifs individuels.
  10. Dispositif selon la revendication 9, caractérisé en ce qu'un régulateur de pression variable doté éventuellement d'un élément de filtre est disposé entre le ballon de stockage (49) et l'armoire (51) à électrovannes afin de réduire la pression de commande.
  11. Procédé de soufflage intermittent d'air comprimé pour lutter contre le collage et l'accumulation de matière de produits en vrac dans des réservoirs, des trémies, des silos et analogues, dans lequel on peut souffler de l'air comprimé à partir d'un réservoir de stockage d'air comprimé (1) par l'intermédiaire d'un orifice de soufflage (8), qui est ouvert par déplacement d'un piston (11) logé dans un cylindre d'une soupape d'échappement rapide (6), caractérisé par la fermeture commandée du piston (11) de la soupape d'échappement rapide après une diminution du pic de la force de propulsion d'air à au moins 60%, de préférence à au moins environ 50% de la valeur maximale de la force de propulsion d'air obtenue lors d'un soufflage.
EP98951489A 1997-10-02 1998-10-02 Dispositif de type canon a air comprime pour eviter la formation d'amas de materiau dans des produits en vrac situes dans des cuves de reaction et procede correspondant Expired - Lifetime EP0942883B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19743789A DE19743789B4 (de) 1997-10-02 1997-10-02 Vorrichtung zum stoßartigen Ausblasen von Druckluft zur Beseitigung von Materialanbackungen von Schüttgütern in Reaktionsbehältern
DE19743789 1997-10-02
PCT/EP1998/006285 WO1999018012A1 (fr) 1997-10-02 1998-10-02 Dispositif de type canon a air comprime pour eviter la formation d'amas de materiau dans des produits en vrac situes dans des cuves de reaction et procede correspondant

Publications (2)

Publication Number Publication Date
EP0942883A1 EP0942883A1 (fr) 1999-09-22
EP0942883B1 true EP0942883B1 (fr) 2003-05-21

Family

ID=7844524

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98951489A Expired - Lifetime EP0942883B1 (fr) 1997-10-02 1998-10-02 Dispositif de type canon a air comprime pour eviter la formation d'amas de materiau dans des produits en vrac situes dans des cuves de reaction et procede correspondant

Country Status (7)

Country Link
EP (1) EP0942883B1 (fr)
AT (1) ATE240888T1 (fr)
DE (2) DE19743789B4 (fr)
DK (1) DK0942883T3 (fr)
ES (1) ES2196612T3 (fr)
PT (1) PT942883E (fr)
WO (1) WO1999018012A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4386332A1 (fr) * 2022-12-16 2024-06-19 National Institute for Research Development and Testing in Electrical Engineering - ICMET Craiova Procédé et système prédictif pour déterminer l'état de fonctionnement dans des canons à air de gros calibre et des micro-cannons

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10101041B4 (de) * 2001-01-11 2014-09-18 Agrilux Beteiligungs Gmbh Ventileinheit für eine Vorrichtung zum stoßartigen Ausblasen von Druckluft aus einem Druckluftspeicherbehälter zur Beseitigung von Materialanbackungen und -aufstauungen
ITBG20010037A1 (it) * 2001-10-19 2003-04-19 Larix Srl Valvola di sparo o scarico istantaneo di grande portate di aereiformi, per fluidificazione di materiali granulari e/o polverulenti.
DE202006016627U1 (de) * 2006-10-30 2006-12-21 Agrilux Beteiligungs Gmbh System von Luftstoßgeräten
ITBG20080028A1 (it) * 2008-05-05 2009-11-06 Larix Srl Sistema di attivazione e fluidificazione per silos o contenitori di materiali granulari.

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2429952A1 (fr) * 1978-06-27 1980-01-25 Simoens Herve Valve d'alimentation puis de decharge brutale d'une capacite
NL8501483A (nl) * 1985-05-24 1986-12-16 Tech Bureau Knol B V Luchtstootapparaat.
DE3616990C1 (de) * 1986-05-21 1987-12-17 Agrichema Materialflusstechnik Luftstossgeraet zur Aufloesung von Materialaufstauungen in Lagersilos fuer Schuettgut
DE3742489C2 (de) * 1987-12-15 1998-04-09 Agrichema Materialflusstechnik Luftstoßgerät
DE3800114A1 (de) * 1988-01-05 1989-07-13 Agrichema Materialflusstechnik Luftstossgeraet zum beseitigen von materialaufstauungen von schuettguetern in bunkern u. dgl.
DE4236896A1 (de) * 1992-10-31 1994-05-05 Maury Hans Dietmar Luftkanone zur Beseitigung von Schüttgutanbackungen und -stauungen
DE29608534U1 (de) * 1996-05-10 1996-08-08 Agrichema Materialflußtechnik GmbH, 55257 Budenheim Blasvorrichtung mit außenliegender Ventileinheit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4386332A1 (fr) * 2022-12-16 2024-06-19 National Institute for Research Development and Testing in Electrical Engineering - ICMET Craiova Procédé et système prédictif pour déterminer l'état de fonctionnement dans des canons à air de gros calibre et des micro-cannons

Also Published As

Publication number Publication date
DE59808451D1 (de) 2003-06-26
WO1999018012A1 (fr) 1999-04-15
PT942883E (pt) 2003-09-30
ES2196612T3 (es) 2003-12-16
DK0942883T3 (da) 2003-09-15
DE19743789A1 (de) 1999-04-08
DE19743789B4 (de) 2005-10-06
EP0942883A1 (fr) 1999-09-22
ATE240888T1 (de) 2003-06-15

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