EP1344572A2 - Lackieranlage zum Aufbringen von flüssigem Beschichtungsmaterial auf Werkstücke - Google Patents
Lackieranlage zum Aufbringen von flüssigem Beschichtungsmaterial auf Werkstücke Download PDFInfo
- Publication number
- EP1344572A2 EP1344572A2 EP03001483A EP03001483A EP1344572A2 EP 1344572 A2 EP1344572 A2 EP 1344572A2 EP 03001483 A EP03001483 A EP 03001483A EP 03001483 A EP03001483 A EP 03001483A EP 1344572 A2 EP1344572 A2 EP 1344572A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- line
- coating material
- valves
- shut
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000011248 coating agent Substances 0.000 title claims description 33
- 238000000576 coating method Methods 0.000 title claims description 33
- 238000010422 painting Methods 0.000 title claims description 14
- 238000009434 installation Methods 0.000 title claims description 7
- 239000011344 liquid material Substances 0.000 title 1
- 239000000463 material Substances 0.000 claims description 30
- 239000003973 paint Substances 0.000 claims description 17
- 238000011010 flushing procedure Methods 0.000 claims description 15
- 238000000926 separation method Methods 0.000 claims description 14
- 239000012777 electrically insulating material Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims 6
- 238000004140 cleaning Methods 0.000 abstract 1
- 238000002955 isolation Methods 0.000 description 11
- 239000003599 detergent Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000003825 pressing Methods 0.000 description 5
- 238000010926 purge Methods 0.000 description 5
- 239000003086 colorant Substances 0.000 description 3
- 238000009503 electrostatic coating Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/14—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet
- B05B12/1481—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet comprising pigs, i.e. movable elements sealingly received in supply pipes, for separating different fluids, e.g. liquid coating materials from solvent or air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
- B05B5/16—Arrangements for supplying liquids or other fluent material
- B05B5/1608—Arrangements for supplying liquids or other fluent material the liquid or other fluent material being electrically conductive
Definitions
- the invention relates to a painting system for applying liquid Coating material on workpieces with an automatic controllable color changer, one that can be connected to high voltage Atomizer, one between the color changer and the atomizer running supply line made of electrically insulating material, through which a pig can be moved back and forth, and with one with the Supply line connected potential isolation device for electrostatically isolating at least one to the feed line connected storage container for the coating material and of the atomizer versus the color changer.
- Such a painting system for electrostatic coating is used in particular by motor vehicle bodies, is from DE 199 61 270 A1 known.
- the feed lines are in use one pig each can be emptied and then form one Isolation path that a voltage flashover from the first Storage container to the color changer or from the second storage container to the first reservoir prevented.
- the known system can be operated so that continuously from the second high-voltage reservoir coated can be what a metering conveyor in the form of a Gear pump is provided while the first reservoir in Alternation in high voltage and in earth potential is placed so that it alternately filled from the outside during the coating operation and can be emptied into the second reservoir.
- the Loss is essentially limited to a paint volume that corresponds to the Contents of the single insulating section of the feed line corresponds.
- a color changer 1 is connected to a ring line system 2 connected, from which different shades a - n are fed to him can be.
- Each individual ring line is a color valve 3a in the color changer 1 assigned to 3n, through which the respective color within the Color changer 1 is released.
- detergent valves 4a - 4n for detergent and purge air valves 5a - 5n arranged for purge air.
- the released is released via a release valve 6 Hue fed into a feed line 7, which differs from Color changer 1 extends to an atomizer 8.
- a first or front one Pig park station 9 which seen in the paint flow direction represents a or front end of a pig running track, which with the Feed line 7 is identical. That seen in the paint flow direction other, second end of the pig running track is also as Pig parking station 10 and is located directly on or in Atomizer 8. If coating material from the color changer 1 in fed the feed line 7, pushes the coating material a pig 11 initially located in the pig parking station 9 until it arrives at the pig parking station 10.
- the Pig parking station 10 is designed so that the coating material can flow past or around the pig 11 and over it the atomizer valve 12 can emerge from the atomizer 8.
- a release valve 13 and a Outlet valve 14 opened at the end of supply line 7.
- a sensor 15 that the arrival of the pig 11 and thus recognizes the end of the pressing process.
- the duration of the Pressing process also by measuring the amount of paint fed in or the pressing time can be controlled.
- the atomizer 8 is one as intended High voltage potential electrostatic atomizers is and the coating material is an electrical conductive paint, e.g. B. a so-called water-based paint, must take care to be worn so that it does not have any conductivity during operation Paint-filled paint supply line 7 comes to a short circuit.
- an electrical conductive paint e.g. B. a so-called water-based paint
- the potential separation device 16 contains essential components a first potential isolation valve 17 and a second potential isolation valve 18 and a first storage cylinder 19 and a second Storage cylinder 20 for the coating material, both with work with a piston.
- a gear metering pump can act.
- a pneumatically remote controlled paint pressure regulator LDR
- LDR paint pressure regulator
- the potential separation device 16 is via a front connecting line 40 and a rear connecting line 41, each with a Shut-off valve 22 and 23 are provided to the supply line 7 connected.
- the shut-off valves 22 and 23 are in immediate vicinity of the supply line 7.
- the in the Feed line 7 coating material can thus be also into the potential separation device 16 and its storage cylinder 19 and feed 20.
- To the rear connecting line 41 is immediately in front the shut-off valve 23 has a drain line with a drain valve 24 connected.
- the Shut-off valves 22 and 23 of the connecting lines 40 and 41 as long opened until the potential separation device 16 is filled.
- the dosage the filling quantity can be made with the aid of the metering element 21 become.
- the drain valve 24 After the potential separation device 16 has been completely filled closes the drain valve 24.
- shutoff valves 26 and 27 are front Shut-off valve 26 and a rear shut-off valve 27, which the Limit insulation section 25 and into the supply line 7 installed and designed as piggable ball valves. This means that the inside diameter of the two ball valves is exactly that Correspond to the inner diameter of the feed line 7 and thus the The pig can pass through the open shut-off valves 26 and 27.
- the Isolation section 25 between the two shut-off valves 26 and 27 forms a bypass to the potential isolation device 16.
- the shut-off valves are used to flush the insulating section 25 26 and 27 closed.
- a drain valve 28 just before the rear Shut-off valve 27 is opened and via a release valve 29 immediately after the front shut-off valve 26 purge air and Detergent via a detergent valve 30 and a purge air valve 31 in the Insulated section 25 blown.
- the release valve 29 and that Drain valve 28 are arranged so that in the insulating section 25th coating material is rinsed out without residue.
- the coating material has been completely rinsed out of the Isolating section 25 is then blown dry by compressed air, so that it is reliably non-conductive.
- the length of the insulation section 25 is chosen as short as possible, so that by flushing resulting paint loss is kept as low as possible. However, must the insulating section 25 be sufficiently long so that the Atomizer 8 applied high voltage reliably against earth potential is isolated.
- the atomizer valve 12 is closed and the High voltage switched off.
- the check valve 23 of the rear Connection line 41, the rear shut-off valve 27, the release valve 29 and the drain valve 32 are opened.
- Dosing member 21 between the shut-off valves 22 and 23 in the Potential separation device 16 included coating amount closed shut-off valve 22 and open release valve 37 see above fed as far as possible into the empty insulating section that comes with it completely filled with coating material.
- an on Atomizer 8 arranged detergent valve 34 in alternation with the The sliding air valve 33 also located there is opened. Thereby the paint residues remaining in the feed line 7 over a on the color changer 1 arranged drain valve 36 rinsed.
- the system After completing these flushing processes, the system is ready for Feeding a new color from the color changer 1.
- the required flushing time can be significantly reduced if for the Rinsing the individual pipe sections with heated detergent is used.
Landscapes
- Electrostatic Spraying Apparatus (AREA)
- Spray Control Apparatus (AREA)
- Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
Abstract
Description
Claims (11)
- Lackieranlage zum Aufbringen von flüssigem Beschichtungsmaterial auf Werkstücke mit einem automatisch ansteuerbaren Farbwechsler (1), einem an Hochspannung anlegbaren Zerstäuber (8), einer zwischen dem Farbwechsler (1) und dem Zerstäuber (8) verlaufenden Zuführungsleitung (7) aus elektrisch isolierendem Werkstoff, durch die ein Molch (11) vorund zurückbewegbar ist, und mit einer mit der Zuführungsleitung (7) verbundenen Potenzialtrenneinrichtung (16) zum elektrostatischen Isolieren wenigstens eines an die Zuführungsleitung (7) angeschlossenen Vorratsbehälters (19, 20) für das Beschichtungsmaterial und des Zerstäubers (8) gegenüber dem Farbwechsler (1), dadurch gekennzeichnet,daß die Zuführungsleitung (7) einen von Absperrventilen (26, 27) begrenzten Isolierabschnitt (25) von durchschlagverhindernder Länge aufweist, der bei geschlossenen Absperrventilen (26, 27) mittels einer Einrichtung (28 - 32) entleerbar und von Beschichtungsmaterialresten freispülbar ist,daß die Potenzialtrenneinrichtung (16) parallel zum Isolierabschnitt (25) an die Zuführungsleitung (7) angeschlossen istund daß das außerhalb des Isolierabschnitts (25) in der Zuführungsleitung (7) vorhandene Beschichtungsmaterial unter Einsatz des Molchs (11) in den Farbwechsler (1) zurückdrückbar ist, wozu die beiden den Isolierabschnitt begrenzenden Absperrventile (26, 27) in Offenstellung vom Molch (11) passierbar sind.
- Lackieranlage nach Anspruch 1, dadurch gekennzeichnet, daß das beim Farbwechsel in der Potenzialtrenneinrichtung (16) noch vorhandene Restbeschichtungsmaterial in einen leeren Isolierabschnitt (25) der Zuführungsleitung (7) verlagerbar ist.
- Lackieranlage nach Anspruch 1 und 2, dadurch gekennzeichnet, daß die Potenzialtrenneinrichtung (16) zerstäuberseitig eine Dosiereinrichtung (21) für das Beschichtungsmaterial aufweist, mit der auch das Restbeschichtungsmaterial in den Isolierabschnitt (25) förderbar ist.
- Lackieranlage nach Anspruch 3, dadurch gekennzeichnet, daß die Dosiereinrichtung (21) eine Zahnradpumpe ist.
- Lackieranlage nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die den Isolierabschnitt (25) begrenzenden Absperrventile (26, 27) Kugelventile sind, deren Durchgangsöffnung einen Durchmesser aufweist, der dem Innendurchmesser der Lackzuführungsleitung (7) entspricht.
- Lackieranlage nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß an den Isolierabschnitt (25) der Zuführungsleitung (7) in unmittelbarer Nachbarschaft zu den beiden Absperrventilen (26, 27) ein Ablaßventil (32) beziehungsweise ein Freigabeventil (29) totraumfrei angeschlossen sind.
- Lackieranlage nach Anspruch 6, dadurch gekennzeichnet, daß an das Freigabeventil (29) eine Spülmittelleitung mit einem Spülmittelventil (30) und eine Spülluftleitung mit einem Spülluftventil (31) angeschlossen sind.
- Lackieranlage nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die beiden Anschlußleitungen (40, 41) zum Anschließen der Potenzialtrenneinrichtung (16) an die Zuführungsleitung (7) in unmittelbarer Nachbarschaft zur Zuführungsleitung (7) mit Absperrventilen (22, 23) sowie totraumfrei zu diesen mit einem Ablaßventil (24) bzw. einem Freigabeventil (37) versehen sind.
- Lackieranlage nach Anspruch (8), dadurch gekennzeichnet, daß an das Freigabeventil (37) eine Spülmittelleitung mit einem Spülmittelventil (38) und eine Spülluftleitung mit einem Spülluftventil (39) angeschlossen sind.
- Lachieranlage nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß an den Enden der Zuführungsleitung (7) außerhalb einer ersten Molchparkstation (9) und einer zweiten Molchparkstation (10) ein Ablaßventil (36) bzw. ein Freigabeventil (13) angeschlossen sind.
- Lackieranlage nach Anspruch 10, dadurch gekennzeichnet, daß an das Freigabeventil 13 eine Spülmittelleitung mit einem Spülmittelventil (38) und eine Spülluftleitung mit einem Spülluftventil (39) angeschlossen sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10211244 | 2002-03-13 | ||
DE10211244A DE10211244A1 (de) | 2002-03-13 | 2002-03-13 | Lackieranlage zum Aufbringen von flüssigem Beschichtungsmaterial |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1344572A2 true EP1344572A2 (de) | 2003-09-17 |
EP1344572A3 EP1344572A3 (de) | 2006-03-22 |
EP1344572B1 EP1344572B1 (de) | 2007-03-28 |
Family
ID=27762915
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03001483A Expired - Lifetime EP1344572B1 (de) | 2002-03-13 | 2003-01-23 | Lackieranlage zum Aufbringen von flüssigem Beschichtungsmaterial auf Werkstücke |
Country Status (3)
Country | Link |
---|---|
US (1) | US6849129B2 (de) |
EP (1) | EP1344572B1 (de) |
DE (2) | DE10211244A1 (de) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004082847A1 (ja) * | 2003-03-18 | 2004-09-30 | Honda Motor Co., Ltd. | 静電塗装方法および静電塗装装置 |
DE10335358A1 (de) * | 2003-08-01 | 2005-03-10 | Duerr Systems Gmbh | Beschichtungsmittelwechsler |
JP5110881B2 (ja) | 2004-02-20 | 2012-12-26 | ユニバーシティ オブ フロリダ リサーチ ファウンデーション,インコーポレイティド | 軟組織を同時に画像化しながら等角放射線治療を送達するためのシステム |
DE102005001765B4 (de) * | 2005-01-13 | 2008-02-28 | Eisenmann Anlagenbau Gmbh & Co. Kg | Elektrische Trenneinheit für eine Fluid-Förderleitung |
JP4301212B2 (ja) * | 2005-06-03 | 2009-07-22 | 日産自動車株式会社 | 車両の制御装置 |
US10561861B2 (en) | 2012-05-02 | 2020-02-18 | Viewray Technologies, Inc. | Videographic display of real-time medical treatment |
CA2888993A1 (en) | 2012-10-26 | 2014-05-01 | Viewray Incorporated | Assessment and improvement of treatment using imaging of physiological responses to radiation therapy |
US9446263B2 (en) | 2013-03-15 | 2016-09-20 | Viewray Technologies, Inc. | Systems and methods for linear accelerator radiotherapy with magnetic resonance imaging |
US10413751B2 (en) | 2016-03-02 | 2019-09-17 | Viewray Technologies, Inc. | Particle therapy with magnetic resonance imaging |
CN115407252A (zh) | 2016-06-22 | 2022-11-29 | 优瑞技术公司 | 低场强磁共振成像 |
CN118141398A (zh) | 2016-12-13 | 2024-06-07 | 优瑞技术公司 | 放射治疗系统和方法 |
WO2019017214A1 (ja) * | 2017-07-18 | 2019-01-24 | Abb株式会社 | 塗装装置 |
CN116036499A (zh) | 2017-12-06 | 2023-05-02 | 优瑞技术公司 | 多模态放射疗法的优化 |
US11209509B2 (en) | 2018-05-16 | 2021-12-28 | Viewray Technologies, Inc. | Resistive electromagnet systems and methods |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19961270A1 (de) | 1999-12-18 | 2001-07-05 | Inlac Ind Lackieranlagen Gmbh | Lackieranlage |
Family Cites Families (31)
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NL187613C (nl) | 1978-01-11 | 1991-12-02 | Akzo Nv | Inrichting voor het elektrostatisch verspuiten van elektrisch geleidende lak. |
US4313475B1 (en) | 1980-06-26 | 1994-07-12 | Nordson Corp | Voltage block system for electrostatic coating with conductive materials |
SE449451B (sv) | 1986-03-24 | 1987-05-04 | Leif Tilly | Sett och anordning att tillfora ett elektriskt ledande, flytande medium fran ett forradssystem till en forbrukningsstation |
DE3725172A1 (de) * | 1987-05-27 | 1989-02-09 | Behr Industrieanlagen | Verfahren und anlage zum elektrostatischen beschichten mit leitfaehigem material |
DE3914327C1 (de) * | 1989-04-29 | 1990-09-06 | M H A. Zentgraf. Merziger Hochdruck-Armaturen Gmbh & Co, 6640 Merzig, De | |
FR2656460B1 (fr) | 1989-12-22 | 1994-02-11 | Sames Sa | Dispositif d'isolation electrique formant element de conduit et installation comportant un tel dispositif. |
US5197676A (en) | 1990-07-18 | 1993-03-30 | Nordson Corporation | Apparatus for dispensing conductive coating materials |
FR2678345B1 (fr) | 1991-06-27 | 1993-10-29 | Fmc Europe | Vanne raclable a troies voies, du type a papillon. |
US5221047A (en) | 1991-08-13 | 1993-06-22 | Gmfanuc Robotics Corporation | Method and system for cleaning a paint supply line and changing paint colors in production paint operations |
US5192595A (en) | 1991-08-13 | 1993-03-09 | Gmfanuc Robotics Corporation | Method for the productive utilization of paint in a paint supply line utilizing a cleaning slug in production paint operations |
US5288525A (en) | 1992-03-24 | 1994-02-22 | Binks Manufacturing Company | Method of and system for delivering conductive coating material to electrostatic spraying apparatus |
FR2695327B1 (fr) | 1992-09-09 | 1995-07-07 | Sames Sa | Dispositif de projection électrostatique de produit de revêtement électriquement conducteur, muni d'un réservoir isolé adapté à contenir un tel produit. |
US5326031A (en) | 1992-10-15 | 1994-07-05 | Nordson Corporation | Apparatus for dispensing conductive coating materials including color changing capability |
US5364035A (en) | 1993-12-20 | 1994-11-15 | Graco Inc. | High voltage sealing and isolation via dynamic seals |
US5746831A (en) | 1994-07-12 | 1998-05-05 | Ransburg Corporation | Voltage block |
US5647542A (en) * | 1995-01-24 | 1997-07-15 | Binks Manufacturing Company | System for electrostatic application of conductive coating liquid |
DE19620577A1 (de) | 1996-05-22 | 1997-11-27 | Abb Research Ltd | Kolbenventil |
DE19709988C2 (de) * | 1997-03-11 | 2002-01-24 | Inlac Ind Lackieranlagen Gmbh | Lackiereinrichtung mit mehreren kreisförmig geführten Farbleitungen |
DE19728155A1 (de) | 1997-07-03 | 1999-01-07 | Lactec Gmbh | Verfahren und Vorrichtung zum Lackieren |
DE19817377B4 (de) | 1998-04-18 | 2013-01-03 | Lactec Gmbh | Verfahren und Vorrichtung zum Zuführen von Lack zu mindestens zwei Zerstäubern |
DE19742588B4 (de) * | 1997-09-26 | 2009-02-19 | Dürr Systems GmbH | Verfahren zum serienweisen Beschichten von Werkstücken |
DE19756488A1 (de) * | 1997-12-18 | 1999-07-01 | Lactec Gmbh | Verfahren und Vorrichtung zum Isolieren eines elektrisch leitenden Strömungsmediums |
DE19805938A1 (de) | 1998-02-13 | 1999-08-19 | Lactec Gmbh | Verfahren und Vorrichtung zum Beschichten von Teilen |
DE19937474C2 (de) * | 1999-08-07 | 2001-08-02 | Eisenmann Lacktechnik Kg | Lackiervorrichtung mit einer Pistoleneinheit, einer Farbwechseleinrichtung und einer molchbaren Verbindungseinrichtung |
DE19937426A1 (de) * | 1999-08-07 | 2001-03-15 | Eisenmann Lacktechnik Kg | Lackiervorrichtung |
DE10064065B4 (de) | 1999-12-22 | 2006-07-27 | Dürr Systems GmbH | Beschichtungssystem für die automatisierte Beschichtungstechnik |
DE10006310A1 (de) | 2000-02-12 | 2001-08-16 | Lactec Gmbh | Verfahren und Vorrichtung zum Beschichten |
DE10033987A1 (de) * | 2000-07-13 | 2002-01-24 | Duerr Systems Gmbh | Verfahren zur Versorgung eines Beschichtungsorgans für die elektrostatische Serienbeschichtung von Werkstücken und Versorgungssystem hierfür |
DE10059041C2 (de) | 2000-11-28 | 2002-11-14 | Lactec Ges Fuer Moderne Lackte | Verfahren und Vorrichtung zum Fördern von elektrisch leitfähigen Lacken zwischen unterschiedlichen Spannungspotenzialen |
DE10131562A1 (de) * | 2001-06-29 | 2003-01-16 | Duerr Systems Gmbh | Verfahren und System zur Versorgung einer Beschichtungsvorrichtung |
DE10157966A1 (de) * | 2001-11-27 | 2003-06-05 | Duerr Systems Gmbh | Verfahren und Versorgungssystem zur dosierten Materialversorgung einer Beschichtungsvorrichtung |
-
2002
- 2002-03-13 DE DE10211244A patent/DE10211244A1/de not_active Withdrawn
-
2003
- 2003-01-23 EP EP03001483A patent/EP1344572B1/de not_active Expired - Lifetime
- 2003-01-23 DE DE50306886T patent/DE50306886D1/de not_active Expired - Lifetime
- 2003-03-12 US US10/388,377 patent/US6849129B2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19961270A1 (de) | 1999-12-18 | 2001-07-05 | Inlac Ind Lackieranlagen Gmbh | Lackieranlage |
Also Published As
Publication number | Publication date |
---|---|
EP1344572B1 (de) | 2007-03-28 |
US6849129B2 (en) | 2005-02-01 |
EP1344572A3 (de) | 2006-03-22 |
DE10211244A1 (de) | 2003-10-23 |
DE50306886D1 (de) | 2007-05-10 |
US20040020428A1 (en) | 2004-02-05 |
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