EP1097668B1 - Dispositif de régulation de la quantité de sel de régénération provenant de réservoir de l'adoucisseur d'une machine à laver - Google Patents

Dispositif de régulation de la quantité de sel de régénération provenant de réservoir de l'adoucisseur d'une machine à laver Download PDF

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Publication number
EP1097668B1
EP1097668B1 EP00120150A EP00120150A EP1097668B1 EP 1097668 B1 EP1097668 B1 EP 1097668B1 EP 00120150 A EP00120150 A EP 00120150A EP 00120150 A EP00120150 A EP 00120150A EP 1097668 B1 EP1097668 B1 EP 1097668B1
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EP
European Patent Office
Prior art keywords
assembly according
salt
regeneration
rod
gate valve
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Expired - Lifetime
Application number
EP00120150A
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German (de)
English (en)
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EP1097668A3 (fr
EP1097668A2 (fr
Inventor
Giuseppe Borroni
Carlo Carli
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T&P SpA
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T&P SpA
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Publication of EP1097668A3 publication Critical patent/EP1097668A3/fr
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Publication of EP1097668B1 publication Critical patent/EP1097668B1/fr
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4229—Water softening arrangements

Definitions

  • the present invention relates to an assembly for the regulation of the quantity of regeneration salt to be taken from the salt tank of the decalcifier of a washing machine.
  • a decalcifier for washing machines of the known type comprises a tank for the ion exchanging resins for softening the washing water and a tank for the salt for regenerating the ion exchanging resins, communicating through the opening of a regeneration solenoid valve.
  • the salt is removed at opening of the regeneration solenoid valve by regeneration water taken from the water supplying the washing tub and accumulated in a special dispenser receptacle.
  • the regeneration water is distributed between two or more conduits inside the salt tank and outflowing at a predetermined distance from the inlet section of the resins tank, so that for greater distances the regeneration water succeeds in removing increasing quantities of salt.
  • the removal of the salt can be controlled by sending only a part of the regeneration water for removal from the salt tank, while the remaining part is channelled directly towards the resins tank and is used for diluting the brine removed from the salt tank.
  • the regeneration water is distributed via a distribution part formed by a small vertical rotating rod whose lower shaped end forms on the bottom of the salt tank a gate valve which intercepts and conveys the regeneration water towards the conduit selected.
  • the upper end of the small rod, situated in the area enclosed by the salt filler, is formed by an indicator plate provided with a notch for inserting the tip of a screwdriver or the like, capable of orientating the indicator plate itself in the various angular positions corresponding to the opening of each of the exit ways of the gate valve.
  • a disadvantage which occurs in traditional systems consists in the fact that the diameter of the rod must by very limited in order not to obstruct the operation of filling the salt through the relative filler (see EP-A-0 433 676 for example).
  • the indicator plate arranged horizontally, must also necessarily be small, therefore becoming accessible with difficulty for the operations both of simple reading and selection by the user.
  • the need for reduced transverse overall dimensions for the distribution part does not allow a free choice of the dimension and number of outflow apertures of the gate valve, reducing versatility of the distribution system.
  • the gate valve Since the gate valve is immersed in the brine on the base of the salt tank, it is usually necessary to provide the distribution part with a small rubber part which creates a perfect seal between the gate valve and the conduits supplied thereby.
  • the rubber seal part increases the complexity of the system and has a significant effect on its overall cost as regards the distribution part.
  • the welding of the two half parts forming the decalcifier is in general also used to restrain the rod in the correct position inside the salt tank.
  • the object of the present invention is that of providing an assembly for the regulation of the quantity of regeneration salt to be taken from the salt tank of the decalcifier of a washing machine which avoids the disadvantages suffered in a traditional system.
  • one object of the present invention is that of providing an assembly for regulation of the quantity of regeneration salt to be taken from the salt tank of the decalcifier of a washing machine which is easily accessible and visible from outside the decalcifier without obstructing loading of the salt from the filler of the relative tank.
  • Another object of the present invention is that of providing an assembly for the regulation of the quantity of regeneration salt to be removed from the salt tank of the decalcifier of a washing machine formed by a small number of parts so as to be simple and inexpensive.
  • Yet another object of the present invention is that of providing an assembly for the regulation of the quantity of regeneration salt to be removed from the salt tank of the decalcifier of a washing machine which can be adapted with flexibility to various working conditions.
  • Another object again of the present invention is that of providing an assembly for the regulation of the quantity of regeneration salt to be removed from the salt tank of the decalcifier of a washing machine which can be positioned in the decalcifier with care and without complicating assembling of the same decalcifier.
  • an assembly for the regulation of the quantity of regeneration salt to be removed via regeneration water from the salt tank of the decalcifier of a washing machine for the regeneration of the ion exchanging resins contained in the resins tank of the decalcifier comprising a part for the distribution of regeneration water between at least a first and a second conduit of the decalcifier, of which conduits at least one leads to removal of the regeneration salt, said distribution part comprising a rotating gate valve capable of adjusting the apertures for outflow of said regeneration water towards said conduits, a rod for driving rotation of the gate valve, and a selector of the required distribution of regeneration water attached to the end of the drive rod opposite the gate valve, characterised in that said distribution part is arranged horizontally in the salt tank with the rod provided at the internal side of the upper covering wall of the salt tank and with the selector provided at the internal side wall of the salt tank filler.
  • the horizontal orientation of the distribution part advantageously allows the possibility of placing the drive rod of the gate valve outside of the space of the salt tank underneath the relative filler in such a way that there are no obstacles to loading the salt.
  • the drive rod and the gate valve which can be actuated thereby can consequently be dimensioned as required in such a way as to achieve regulation which can be set with versatility for several conditions of salt removal.
  • the selector is preferably formed by a wheel coaxial to the rod so as to have a large diameter without penalising the passage of the salt from the filler towards the base of the relative tank.
  • the selection wheel is thus fully visible and provides a clearly legible indication from the outside of the decalcifier to the user who has removed the plug from the filler of the salt tank, at the same time offering the further advantage of being able to be actuated directly by hand.
  • the distribution part is inserted in the upper part of the salt tank, where the regeneration water still has such a head as to guide it vertically downwards through the gate valve without axial overflows, and therefore makes the use of a rubber seal part on the body of the gate valve superfluous.
  • the decalcifier 1 of a washing machine is composed of an ions exchanging resins tank 3 and of a salt tank 5 communicating via a regeneration solenoid valve (not shown).
  • a regeneration dispenser receptacle 11 On the decalcifier 1 a regeneration dispenser receptacle 11 is positioned whose base has a special mouth 2 for the inflow of water coming from an external water supply source. Part of this water is intended to be sent directly towards the resins tank 3 so as to be softened before being fed into the washing tub, while the remaining part is accumulated temporarily in a special compartment of the dispenser receptacle 11 in such a way as to be able to be fed, following energisation of the regeneration solenoid valve, towards the salt tank 5 for removal of the regeneration salt.
  • the resins tank 3 has, on the upper covering part, a mouth 7 which can be coupled to a pin 7', mounted on the base of the regeneration dispenser receptacle 11, wherefrom it receives the washing water to be softened, and on the lower part a mouth (not shown) which feeds the softened washing water into the washing tub.
  • the salt tank 5 has, on the upper covering part, a mouth 9 which can be coupled to a pin 9', mounted on the base of the regeneration dispenser receptacle 11, wherefrom it receives the regeneration water temporarily accumulated in the dispenser receptacle 11 itself, and a filler 13 fitted with a plug 15 for loading the salt.
  • a part 17 is provided which is attached at the upper covering wall of the salt tank 5 and which distributes the regeneration water between two conduits whose inlet section alone is shown in Fig. 5 with the reference numerals 19 and 21 respectively.
  • conduit 19 carries the regeneration water which traverses it for removal of the salt contained in the salt tank 5, while the other conduit 21 returns the regeneration water which traverses it to the resins tank 3 so as to dilute the brine removed by the regeneration water which has traversed the conduit 19.
  • both conduits carry the regeneration water which traverses them for removal of the salt, and in this case the point of outflow of the two conduits on the base of the salt tank 5 should occur at a distance different from the inlet section of the resins tank 3.
  • the body of the rod 25 is formed by axial ribs 26 capable of opposing the deforming stresses of a thermal origin which intervene during the process of moulding, while at the rear base of the rod 25 a first solid disk 50 is formed and wherefrom the gate valve 23 extends axially and is in turn formed by two baffles 29 and 31 orientated perpendicularly one in relation to the other and joined by the interposition of a second disk 33 of identical shape and size to the first disk 50.
  • the first disk 50 is centred on the rear base of the rod 25 and in relation thereto has a slightly larger diameter.
  • the first baffle 29 projects axially from a section of the first disk 50 formed by imagining intersecting said disk 50 with two parallel planes perpendicular thereto, one of which planes passes from a diameter thereof.
  • the second baffle 31 projects axially from a section of the second disk 33 formed by imagining intersecting said disk 33 with two parallel planes perpendicular thereto, one of which planes passes from a diameter thereof.
  • the two disks 33 and 50 have the main task of preventing the regeneration water which traverses the gate valve 23 vertically from succeeding in overflowing axially.
  • each baffle 29 and 31 Perpendicularly to the lateral edge of each baffle 29 and 31 respectively a slot 35 and 37 respectively is formed which, as we will see, forms a section for controlled passage of the regeneration water.
  • the selector 27 is formed by a selection wheel 39 mounted coaxially on the other end of the rod 25.
  • an arched track 41 is formed, having an angular opening of 90°.
  • the track 41 passes through the thickness of the wheel 39 and its radially external edge forms four notches 43, angularly equidistant, to each of which a numerical impression 45, in a diametrically opposed point of the wheel 39, corresponds.
  • the distribution part 17 is inserted in a special seat formed on the internal side of the upper covering wall of the salt tank 5.
  • the distribution part 17 is supported by a U-shaped bracket 59 attached vertically near the internal side wall of the salt filler 13 so as to support, with its internal arched part 61, the front end of the rod 25, and by a seat 47 for engaging the gate valve 23 co-operating with the bracket 59 so as to support the distribution part 17 in a horizontal position.
  • the wheel can be provided with a large diameter, 5 cm here, without obstructing loading of the salt and at the same time being accessible and fully visible from outside the salt tank 5.
  • the engaging seat 47 also prolonging from the internal side of the upper wall of the salt tank 5, comprises an upper wall 49, a front wall 51 and a lower wall 53.
  • the seat 47 is shaped internally in such a way as to allow axial engaging and support during rotation of the gate valve 23 and therefore has a circular front aperture with diameter equal to the diameter of the disks 33 and 50.
  • the external side of the upper wall 49 opens upwards so as to form the mouth 9 for feeding the regeneration water to the gate valve 23, while in the lower wall 53 two openings 55 and 57 respectively, vertically aligned with a corresponding interception element 29 and 31 respectively, are capable of receiving the regeneration water from the outflow apertures of the gate valve 23 in such a way as to feed the inlet sections of the conduits 19 and 21 respectively.
  • the front wall 51 forms instead a striking surface for the rear base of the second baffle 31 of the gate valve 23.
  • the front surface of the arched part 61 of the bracket 59 is provided with an element which can be engaged with the distribution part 17 itself.
  • the selection wheel 27 is thus blocked in the groove 67 defined by the small tooth 63 and the axial translation of the distribution part 17 is prevented.
  • the rotation of the distribution part 17 is however permitted by the sliding of the small tooth 63 along the track 41.
  • the small tooth 63 also serves to indicate the obtaining of a selection set by the user, achieved when it reaches one of the angular positions of the track 41 occupied by the notches 43.
  • the distribution part 17 is already supported in the correct working position by the upper cover of the decalcifier before the two half parts of the decalcifier are thermally welded one to the other.
  • Thermal welding of the decalcifier does not play an active role in positioning of the distribution part 17 and can therefore be performed in an extremely random manner.
  • the selection wheel 39 drives the drive rod 25 which in turn rotates the gate valve 23 supported rotatingly in its engaging seat 47, while the small tooth 63 traverses the track 41 until it stops on the notch 43 corresponding to the numerical impression of the required selection.
  • the operating conditions permitted in the present preferred embodiment are four.
  • the baffle 29 is in a horizontal position while the baffle 31 is in a vertical position.
  • the regeneration solenoid valve On opening of the regeneration solenoid valve the regeneration water which, from the mouth 9, enters the salt tank 5 and finds the baffle 31 in the position which allows maximum outflow of water towards the underlying conduit 21, while the baffle 29 completely blocks the passage of the regeneration water towards the underlying conduit 19, with the exception of the slot 35 which allows a controlled passage of regeneration water.
  • the rate of flow of regeneration water through the controlled passage is defined with extreme precision by the dimensions of the slot.
  • the controlled passage has an area of 4.5 mm 2 compared to an area of 100 mm 2 approximately of the relative baffles 19 and 21.
  • This setting of the selector 39 is very suitable for the case of regeneration of resins for very low hardness of the washing water, given that it performs minimum withdrawal of salt from the salt tank 5, diverting most of the regeneration water towards the resins tank 3 for the dilution of the salt removed from the salt tank 5.
  • This setting of the selector 39 is very suitable for the case of regeneration of resins for very high hardness of the washing water, given that it performs maximum withdrawal of salt from the salt tank 5, diverting the minimum part of regeneration water towards the resins tank 3 for dilution of the salt removed from the salt tank 5.
  • the settings "2" and “3" of the selection wheel 39 refer to an intermediate operating condition between the two now shown for regeneration with average hardness values of the washing water.
  • the slant of the two baffles 29 and 31 regulates the amplitude of the passage apertures of the gate valve 23 in such a way that at setting "2" a greater quantity of regeneration water reaches the conduit 21, and at setting "3" a greater quantity of regeneration water reaches the conduit 19.
  • the distribution part due to the very fact of being positioned in such a way as not to interfere substantially with the salt tank filler, can provide a gate valve formed by a higher number of interception elements than that illustrated hitherto for feeding a corresponding higher number of conduits of the decalcifier and obtaining distribution of regeneration water which is even more flexibly adaptable to the various working conditions.

Landscapes

  • Treatment Of Water By Ion Exchange (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Claims (20)

  1. Un dispositif pour le réglage de la quantité de sel de régénération à enlever au moyen de l'eau de régénération du réservoir de sel (5) de l'adoucisseur (1) d'une machine à laver pour la régénération des résines pour l'échange des ions contenues dans le réservoir des résines (3) de l'adoucisseur (1), comprenant une partie (17) pour la distribution de l'eau de régénération entre un premier (19) et au moins un second (21) conduit de l'adoucisseur (1), conduits (19, 21) dont au moins un (19) provoque l'enlèvement du sel de régénération, ladite partie de distribution (17) comprenant une vanne pivotante à obturateur (23) capable d'ajuster les ouvertures du flux de sortie de ladite eau de régénération vers lesdits conduits (19, 21), et une tige (25) pour entraîner la rotation de la vanne à obturateur (23) ladite vanne à obturateur (23) s'étendant dans l'axe d'un bout de ladite tige d'entraînement (25), et un sélecteur (27) pour régler la distribution désirée d'eau de régénération attaché à l'autre bout de la tige d'entraînement (25), caractérisé par le fait que ladite partie de distribution (17) est disposé horizontalement dans ledit réservoir de sel (5) avec ladite tige (25) procurée sur la partie intérieure de la paroi supérieure de couverture du réservoir de sel (5) et avec le sélecteur (27) procuré sur la paroi latérale interne du remplisseur du réservoir de sel (13).
  2. Un dispositif selon la revendication 1, caractérisé par le fait que ledit sélecteur (27) est en forme de roulette de sélection (39) montée dans l'axe de la tige d'entraînement (25).
  3. Un dispositif selon n'importe quelle des revendications qui précèdent, caractérisé par le fait que la vanne à obturateur (23) comprend en succession axiale un premier (29) et respectivement au moins un second (31) élément pour l'interception de l'eau de régénération associée au dit premier (19) et respectivement au moins à un second (21) conduit de l'adoucisseur (1) et pivotant autour de l'axe de la tige (25) dans un angle prédéterminé l'un par rapport à l'autre.
  4. Un dispositif selon la revendication qui précède, caractérisé par le fait que les éléments d'interception adjacents (29, 31) sont sous forme de déflecteurs plats (29, 31) joints par l'interposition d'un élément de séparation correspondant (50, 33) de manière à empêcher que l'eau de régénération ne déborde dans l'axe de l'un à l'autre.
  5. Un dispositif selon n'importe quelle des revendications précédentes, caractérisé par le fait que ladite tige (25) a un plan circulaire et est formée de nervures axiales (26) capables de s'opposer à des contraintes déformantes d'origine thermique qui se produisent durant le processus de moulage de la tige (25).
  6. Un dispositif selon la revendication précédente, caractérisé par le fait que la base arrière de la tige (25) et l'élément d'interception (29) qui y est adjacent sont joints par l'interposition d'un élément de séparation correspondant (50) de manière à empêcher que l'eau de régénération ne déborde dans l'axe de la vanne à obturateur (23) vers la tige (25).
  7. Un dispositif selon n'importe quelle des revendications de 4 à 6, caractérisé par le fait que chacun desdits éléments de séparation (50, 33) a la forme d'un disque plein avec un diamètre non inférieur au diamètre de la tige (25) et coaxial à la tige (25), tandis que chacun desdits déflecteurs d'interception (29, 31) projette dans l'axe d'une section dudit disque (50, 33) formé par le croisement dudit disque (50, 33) avec deux plans parallèles perpendiculaires à celui-ci, un desquels passe à travers un de ses diamètres.
  8. Un dispositif selon n'importe quelle des revendications de 4 à 7, caractérisé par le fait que ledit premier et au moins un second élément d'interception (29, 31) sont orientés perpendiculairement l'un par rapport à l'autre.
  9. Un dispositif selon n'importe quelle des revendications de 4 à 8, caractérisé par le fait qu'une ouverture est procurée à travers l'épaisseur de chacun desdits éléments d'interception (29, 31) de manière à permettre un passage contrôlé de l'eau de régénération.
  10. Un dispositif selon la revendication qui précède, caractérisé par le fait que ladite ouverture a la forme d'une rainure (35, 37) formée perpendiculairement par rapport au bord du côté de l'élément d'interception.
  11. Un dispositif selon n'importe quelle des revendications qui précèdent, dans lequel le réservoir de sel (5) comprend un remplisseur (13) pour charger le sel et une bouche pour alimenter l'eau de régénération, caractérisé par le fait qu'il est prévue un premier moyen pour soutenir l'élément de distribution (17) sur le côté interne de la paroi supérieure de couverture du réservoir de sel (5) aligné verticalement sous la bouche pour alimenter l'eau de régénération, et un second moyen pour soutenir l'élément de distribution (17) sur la cloison interne du remplisseur (13) du réservoir de sel (5).
  12. Un dispositif selon la revendication précédente, caractérisé par le fait que ledit premier moyen comprend une fixation verticale en forme de U (59) attachée en console à la paroi interne du remplisseur (13) dudit réservoir de sel (5) en sorte de soutenir avec sa partie arquée le bout de la tige (25) du côté du sélecteur (27).
  13. Un dispositif selon n'importe quelle revendication 11 et 12, caractérisé par le fait que le second moyen de support est en forme de siège (47) pour l'engagement axial de la vanne à obturateur (23).
  14. Un dispositif selon n'importe quelle des revendications qui précèdent, caractérisé par le fait que ledit siège d'engagement axial (47) définit à l'intérieur une zone d'engagement circulaire ayant un diamètre égal au diamètre desdits éléments de séparation (50, 33).
  15. Un dispositif selon n'importe quelle revendication 13 ou 14, caractérisé par le fait que ledit siège d'engagement (47) comprend une paroi supérieure (49) formée par ladite bouche d'alimentation de l'eau de régénération dans le réservoir de sel (5), communiquant avec la vanne à obturateur (23), une paroi arrière (51) qui sert de surface d'arrêt pour la vanne à obturateur (23) dans la position d'engagement dans le siège afférent (47), et une cloison inférieure (53) procurée avec une première (55) et au moins une seconde (57) ouverture alignée verticalement à une ouverture correspondante dans lesdits éléments d'interception (29, 31) de manière à envoyer l'eau reçue de la vanne à obturateur (23) vers une correspondante dans lesdits conduits (19, 21) de l'adoucisseur (1).
  16. Un dispositif selon n'importe quelle des revendications de 11 à 15, caractérisé par le fait que lesdits moyens de support et ledit sélecteur comprennent des moyens qui peuvent s'engager réciproquement pour bloquer le glissement axial de la tige (25) sans empêcher sa rotation.
  17. Un dispositif selon la revendication qui précède, caractérisé par le fait que lesdits moyens d'engagement réciproque sont sous forme d'une petite dent (63) sortant de la surface avant de la fixation en forme de U (59) et d'une trace arquée (41) formée dans l'épaisseur du sélecteur (27), ladite dent (63) dessinant une rainure qui peut être encliquetée en glissant sur un bord arqué de ladite trace (41).
  18. Un dispositif selon la revendication qui précède, dans lequel la surface avant de la roulette de sélection (39) procure une série d'impressions espacées en angle (43), chacune desquelles correspondant à une condition de travail qui peut être sélectionnée par l'utilisateur, caractérisé par le fait que la condition de travail est choisie lorsque la dent (63) atteint une position diamétralement opposée à l'impression (43) correspondant à la condition de travail choisie.
  19. Un dispositif selon n'importe quelle des revendications de 8 à 18, caractérisé par le fait que quatre conditions de travail différentes sont procurées qui peuvent être obtenues en tournant le sélecteur (27) par crans de 30°, avec la première condition de travail correspondant à un arrangement vertical d'un élément d'interception (31) et horizontal de l'autre élément d'interception (29).
  20. Un dispositif selon n'importe quelle des revendications qui précèdent, caractérisé par le fait que le sélecteur (27) peut être activé manuellement par l'utilisateur.
EP00120150A 1999-09-30 2000-09-21 Dispositif de régulation de la quantité de sel de régénération provenant de réservoir de l'adoucisseur d'une machine à laver Expired - Lifetime EP1097668B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI992033 1999-09-30
IT1999MI002033A IT1313649B1 (it) 1999-09-30 1999-09-30 Complesso per la regolazione del quantitativo di sale di rigenera daprelevare dal serbatoio del sale del decalcificatore di una macchina

Publications (3)

Publication Number Publication Date
EP1097668A2 EP1097668A2 (fr) 2001-05-09
EP1097668A3 EP1097668A3 (fr) 2002-10-23
EP1097668B1 true EP1097668B1 (fr) 2008-04-30

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EP00120150A Expired - Lifetime EP1097668B1 (fr) 1999-09-30 2000-09-21 Dispositif de régulation de la quantité de sel de régénération provenant de réservoir de l'adoucisseur d'une machine à laver

Country Status (4)

Country Link
EP (1) EP1097668B1 (fr)
AT (1) ATE393595T1 (fr)
DE (1) DE60038718T2 (fr)
IT (1) IT1313649B1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3205357A1 (fr) * 2016-11-04 2017-08-16 MELAG Medizintechnik oHG Appareil de nettoyage et de désinfection

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1187299B (it) * 1985-09-26 1987-12-23 Zanussi Elettrodomestici Lavastoviglie con addolcitore d'acqua e dispositivo di rigenerazione dello stesso
IT1237277B (it) * 1989-11-21 1993-05-27 Merloni Elettrodomestici Spa Perfezionamenti al sistema di addolcimento dell'acqua in una macchina di lavaggio

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Publication number Publication date
DE60038718T2 (de) 2009-07-02
EP1097668A3 (fr) 2002-10-23
IT1313649B1 (it) 2002-09-09
EP1097668A2 (fr) 2001-05-09
ITMI992033A1 (it) 2001-03-30
ITMI992033A0 (it) 1999-09-30
ATE393595T1 (de) 2008-05-15
DE60038718D1 (de) 2008-06-12

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