EP1329993A2 - Verfahren zur Herstellung eines Gleitkontaktstücks für mittlere bis hohe Stromdichten - Google Patents
Verfahren zur Herstellung eines Gleitkontaktstücks für mittlere bis hohe Stromdichten Download PDFInfo
- Publication number
- EP1329993A2 EP1329993A2 EP02026559A EP02026559A EP1329993A2 EP 1329993 A2 EP1329993 A2 EP 1329993A2 EP 02026559 A EP02026559 A EP 02026559A EP 02026559 A EP02026559 A EP 02026559A EP 1329993 A2 EP1329993 A2 EP 1329993A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- sliding contact
- contact piece
- copper
- graphite
- main mixture
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/18—Contacts for co-operation with commutator or slip-ring, e.g. contact brush
- H01R39/20—Contacts for co-operation with commutator or slip-ring, e.g. contact brush characterised by the material thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/12—Manufacture of brushes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49009—Dynamoelectric machine
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49119—Brush
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/5313—Means to assemble electrical device
- Y10T29/53143—Motor or generator
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12014—All metal or with adjacent metals having metal particles
- Y10T428/12028—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, etc.]
- Y10T428/12146—Nonmetal particles in a component
Definitions
- the invention relates to a method for producing a sliding contact piece for medium to high current densities according to the preamble of the claims 1,2,4-7.
- the sliding contact pieces produced thereafter are in particular carbon brushes for electrical machines, especially in motor vehicles, high Current densities occur especially with starters.
- additions of lead or antimony contain the usual sliding contact pieces and have a good cleaning effect, cooling of the sliding contact piece during operation and good sliding properties on a mating contact piece, but toxic or harmful to the environment are to be avoided (EP 0525 222 A1).
- Tin in particular serves as lead substitute or admixture and / or zinc or their alloys.
- the present invention has for its object methods of manufacture to propose sliding contact pieces, which thereafter are not environmentally harmful Contain additions of lead or antimony and nevertheless the favorable operating properties of sliding contact pieces with these environmentally harmful If possible, show substances to an increased extent.
- This object is achieved according to the principle that in the Manufacturing process either by premixing a copper free matrix or subsequently when mixing a copper-containing matrix as Main mixture is a substitute based on a metal from the group Zinc, tin, bismuth or their alloys is added. After the subsequent one Pressing the sliding contact piece becomes a sintering or subjected to temperature treatment. This essentially occurs selective alloy formation with copper not in all production variants one, but this is given with the below Features advantageously achieved, thereby the stability of the sliding contact piece can be further increased significantly.
- the added as a substitute Metal predominantly in the graphite / plastic mixture so built in that a shield to the copper, which later added is carried out and alloy formation with the copper is omitted.
- the addition of the substitute can instead also be carried out subsequently Claim 2 carried out in the mixing of the main mixture with copper become. Only as much substitute is preferably added that not all of the copper or copper matrix is converted into a brass alloy is, but that only so-called brass islands are formed. As a result, there is an advantageous punctual increase in hardness Copper and, for example, tin, which are the stability of the sliding contact piece can increase. However, if such a selective increase in hardness is not desired, it can be minimized by the addition of friction be compensated.
- the main mixture can according to claim 3 fine copper powder can be added directly with copper.
- the subsequent temperature treatment of the sliding contact piece can Temperature be kept so low that the brass powder with the Copper has no alloy.
- the graphite can be premixed with a plastic binder an oxide of the metal from the aforementioned group zinc, tin, bismuth or whose alloys are added.
- a basic carbonate a metal from the group mentioned zinc, tin, bismuth or their alloys added is particularly preferred because it has particularly favorable properties the sliding contact piece, especially the stability.
- the basic carbonates added in fine form promote the formation of alloys in which following the preparation of the main mixture Sintering process or with temperature treatment with the result a particularly long service life of the sliding contact pieces.
- the sintering and temperature treatment of the pressed material takes place as a substitute Sliding contact pieces advantageously with the steps according to claim 10, in a first step, the sliding contact pieces at a temperature in the range 150 to 250 ° C are sintered in a nitrogen atmosphere, in a second step further sintering at an elevated temperature of 300 to 450 ° C is continued, in a third step the sintering Add hydrogen to the sintering atmosphere at a temperature above 450 ° C and finally an alloy formation depending on the time at a temperature above 300 ° C.
- the sliding contact piece with its advantageous properties, in particular stability, according to one of the invention Process manufactured.
- the main mixture is mixed with the zinc carbonate in a very fine grain, which is the first stage 5 ZnO.2 CO2.4 H2O represents.
- the first step is a conversion to a second stage 2 ZN CO3.3 ZNO.
- the third stage occurs: 5 ZNO.
- Molecular hydrogen is then added to the sintering atmosphere at a temperature of at least 450 ° C. up to a final temperature of 600 ° C., decomposition of the zinc oxide in a fourth stage Zn entry. Then, depending on the time and temperature from 300 ° C, the zinc with the copper content forms a brass alloy through the fusion, ie without a melting phase.
- zinc can also be added when the step 4 should be generated.
- the addition of the basic zinc carbonate can be modified of the example above to a copper-free matrix in the premix take place, the same procedures as described above, but without final alloy formation. Alloy formation is, however, to achieve the high stability of the sliding contact pieces, as mentioned above, particularly advantageous. Otherwise, you can however, the desired lead and antimony replacing effects of the additive in all the conditions described above including alloy formation can be achieved.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Powder Metallurgy (AREA)
- Contacts (AREA)
- Motor Or Generator Current Collectors (AREA)
- Manufacturing Of Electrical Connectors (AREA)
- Sliding-Contact Bearings (AREA)
- Conductive Materials (AREA)
- Lubricants (AREA)
Abstract
Description
Nach Verpressung des Gleitkontaktstücks erfolgt bei dessen Sinterung in Stickstoffatmosphäre und in einem Temperaturbereich von 150 bis 250 °C, insbesondere 180 °C, als erstes eine Umwandlung zu einer zweiten Stufe
Claims (11)
- Verfahren zur Herstellung eines Gleitkontaktstücks für mittlere bis hohe Stromdichten, bei dem Graphit mit einem Kunststoffbinder warm vorgemischt wird, dann die daraus entstandene Vormischung kalt mit Kupfer gemischt wird, sodann die damit hergestellte Hauptmischung zu dem Gleitkontaktstück verpreßt wird, welches schließlich gesintert wird,
dadurch gekennzeichnet, daß bei dem Vormischen des Graphits und Kunststoffbinders ein Metall aus der Gruppe Zink, Zinn, Wismut oder deren Legierungen zugesetzt wird. - Verfahren zur Herstellung eines Gleitkontaktstücks für mittlere bis hohe Stromdichten, bei dem Graphit mit einem Kunststoffbinder warm vorgemischt wird, dann die daraus entstandene Vormischung kalt mit Kupfer gemischt wird, sodann die damit hergestellte Hauptmischung zu dem Gleitkontaktstück verpreßt wird, welches schließlich gesintert wird,
dadurch gekennzeichnet, daß bei dem Mischen der Hauptmischung mit Kupfer ein Metall aus der Gruppe Zink, Zinn, Wismut oder deren Legierungen zugesetzt wird. - Verfahren nach Anspruch 2,
dadurch gekennzeichnet, daß bei dem Mischen der Hauptmischung mit Kupfer Messingpulver zugesetzt wird. - Verfahren zur Herstellung eines Gleitkontaktstücks für mittlere bis hohe Stromdichten, bei dem Graphit mit einem Kunststoffbinder warm vorgemischt wird, dann die daraus entstandene Vormischung kalt mit Kupfer gemischt wird, sodann die damit hergestellte Hauptmischung zu dem Gleitkontaktstück verpreßt wird, welches schließlich gesintert wird,
dadurch gekennzeichnet, daß bei dem Vormischen von Graphit und Kunststoffbinder ein Oxid eines Metalls aus der Gruppe Zink, Zinn, Wismut oder deren Legierungen zugesetzt wird. - Verfahren zur Herstellung eines Gleitkontaktstücks für mittlere bis hohe Stromdichten, bei dem Graphit mit einem Kunststoffbinder warm vorgemischt wird, dann die daraus entstandene Vormischung kalt mit Kupfer gemischt wird, sodann die damit hergestellte Hauptmischung zu dem Gleitkontaktstück verpreßt wird, welches schließlich gesintert wird,
dadurch gekennzeichnet, daß bei dem Mischen der Hauptmischung ein Oxid eines Metalls aus der Gruppe Zink, Zinn, Wismut oder deren Legierungen zugesetzt wird. - Verfahren zur Herstellung eines Gleitkontaktstücks für mittlere bis hohe Stromdichten, bei dem Graphit mit einem Kunststoffbinder warm vorgemischt wird, dann die daraus entstandene Vormischung kalt mit Kupfer gemischt wird, sodann die damit hergestellte Hauptmischung zu dem Gleitkontaktstück verpreßt wird, welches schließlich gesintert wird,
dadurch gekennzeichnet, daß bei dem Vormischen von Graphit und Kunststoffbinder ein basisches Carbonat eines Metalls aus der Gruppe Zink, Zinn, Wismut oder deren Legierungen zugesetzt wird. - Verfahren zur Herstellung eines Gleitkontaktstücks für mittlere bis hohe Stromdichten, bei dem Graphit mit einem Kunststoffbinder warm vorgemischt wird, dann die daraus entstandene Vormischung kalt mit Kupfer gemischt wird, sodann die damit hergestellte Hauptmischung zu dem Gleitkontaktstück verpreßt wird, welches schließlich gesintert wird,
dadurch gekennzeichnet, daß bei dem Mischen der Hauptmischung ein basisches Carbonat eines Metalls aus der Gruppe Zink, Zinn, Wismut oder deren Legierungen zugesetzt wird. - Verfahren nach Anspruch 6 oder 7,
gekennzeichnet durch
Zinkcarbonat als basisches Carbonat. - Verfahren nach Anspruch 8,
dadurch gekennzeichnet, daß ca. 2 bis 5 Gewichtsprozent Zinkhydroxidcarbonat zu ca. 30 bis 70 Gewichtsprozent Kupfermatrix in der Hauptmischung zugegeben werden. - Verfahren nach einem der vorangehenden Ansprüche, insbesondere der Ansprüche 6 bis 9,
dadurch gekennzeichnet, daß die Gleitkontaktstücke in einem ersten Schritt bei einer Temperatur in dem Bereich 150 bis 250 °C in Stickstoffatmosphäre gesintert werden, daß in einem zweiten Schritt die Sinterung weiter bei erhöhter Temperatur von 300 bis 450 °C fortgesetzt wird, daß in einem dritten Schritt die Sinterung unter Zugabe von Wasserstoff zur Sinteratmosphäre bei einer Temperatur über 450 °C bis zu einer Endtemperatur von 600 °C fortgesetzt wird und schließlich als vierter Schritt eine Legierungsbildung zeitabhängig bei einer Temperatur über 300 °C erfolgt. - Gleitkontaktstück für mittlere bis hohe Stromdichten auf
Kupfer-/Kohlenstoffbasis mit einer Beimengung eines Metalls,
dadurch gekennzeichnet, daß es nach einem Verfahren gemäß wenigstens einem der Ansprüche 1 bis 9 hergestellt ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10201923 | 2002-01-19 | ||
DE10201923A DE10201923B4 (de) | 2002-01-19 | 2002-01-19 | Verfahren zur Herstellung eines Gleitkontaktstücks für mittlere bis hohe Stromdichten |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1329993A2 true EP1329993A2 (de) | 2003-07-23 |
EP1329993A3 EP1329993A3 (de) | 2005-12-21 |
EP1329993B1 EP1329993B1 (de) | 2008-01-02 |
Family
ID=7712536
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02026559A Expired - Lifetime EP1329993B1 (de) | 2002-01-19 | 2002-11-28 | Verfahren zur Herstellung eines Gleitkontaktstücks für mittlere bis hohe Stromdichten |
Country Status (5)
Country | Link |
---|---|
US (2) | US7449144B2 (de) |
EP (1) | EP1329993B1 (de) |
JP (1) | JP4073319B2 (de) |
AT (1) | ATE382969T1 (de) |
DE (2) | DE10201923B4 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3168944A1 (de) * | 2015-11-11 | 2017-05-17 | Schunk Gerhard Carbon Technology GmbH | Schleifkontakt |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2865858B1 (fr) * | 2004-02-04 | 2016-10-07 | Carbone Lorraine Applications Electriques | Balais pour moteurs electriques fonctionnant a haute temperature |
JP2008118831A (ja) | 2006-11-08 | 2008-05-22 | Mabuchi Motor Co Ltd | 金属黒鉛質ブラシ |
PL223163B1 (pl) | 2012-10-04 | 2016-10-31 | Gdański Univ Medyczny | Zestaw sond i starterów do wykrywania bakterii z gatunku Acinetobacter baumannii, sposób oraz zestaw do analizy próbek medycznych i środowiskowych |
CN103972758A (zh) * | 2014-03-05 | 2014-08-06 | 台州昊泽碳制品有限公司 | 一种低噪音的电机电刷组合物 |
RU2602569C1 (ru) * | 2015-04-23 | 2016-11-20 | федеральное государственное автономное образовательное учреждение высшего образования "Южно-Уральский государственный университет (национальный исследовательский университет)" (ФГАОУ ВО "ЮУрГУ" (НИУ)") | Способ изготовления электроугольных изделий |
RU2613245C1 (ru) * | 2015-10-27 | 2017-03-15 | федеральное государственное автономное образовательное учреждение высшего образования "Южно-Уральский государственный университет" (национальный исследовательский университет)" (ФГАОУ ВО "ЮУрГУ" (НИУ)") | Способ изготовления графитопластовых изделий |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
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DE154287C (de) * | ||||
DE289101C (de) * | ||||
DE182445C (de) * | 1905-10-01 | 1907-02-04 | Geb Siemens & Co | Verfahren zur Herstellung von Schleif- und Druckkontakten, die aus Metallegierungen und Kohle bestehen. |
CH82327A (de) * | 1919-01-28 | 1919-09-16 | Siemens & Co Geb | Verfahren zur Herstellung von Schleif- und Druckkontakten, die aus Metall und Kohlenstoff bestehen |
DE845977C (de) * | 1942-11-13 | 1952-08-07 | Lorraine Carbone | Verfahren zur Herstellung von Buersten fuer elektrische Maschinen |
DE1273054B (de) * | 1963-05-01 | 1968-07-18 | Morganite Carbon Ltd | Kontaktbuerste fuer elektrische Maschinen und Verfahren zu ihrer Herstellung |
DE4024021A1 (de) * | 1990-07-28 | 1992-01-30 | Ringsdorff Werke Gmbh | Kohlenstoffhaltiges gleitstueck |
US5227689A (en) * | 1989-08-11 | 1993-07-13 | Mabuchi Motor Co., Ltd. | Metal-filled graphite for miniature motors and method of making same |
US5270504A (en) * | 1991-07-22 | 1993-12-14 | Deutsche Carbone Aktiengesellschaft | Sliding contact member for high currrent densities |
Family Cites Families (13)
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US1067003A (en) * | 1909-08-16 | 1913-07-08 | Nat Carbon Co | Process of making electrical conductors. |
US2252277A (en) * | 1939-04-20 | 1941-08-12 | James R Tate | Molded porous electrical brush and the like |
US2411060A (en) * | 1943-05-13 | 1946-11-12 | Gen Electric | Contact element |
US2581301A (en) * | 1948-07-20 | 1952-01-01 | Saywell Associates | Antifriction composition |
US3067319A (en) * | 1959-11-10 | 1962-12-04 | Air Reduction | Metal-graphite brush with welded shunt |
JPS556695B2 (de) * | 1974-12-28 | 1980-02-19 | ||
GB1568403A (en) * | 1976-03-20 | 1980-05-29 | Lucas Industries Ltd | Method of producing a sintered composition |
JPS5514513A (en) * | 1978-07-14 | 1980-02-01 | Sony Corp | Recording and reproducing unit for digital signal |
DE4343736A1 (de) * | 1993-12-21 | 1995-06-22 | Mando Machine Co Ltd | Verfahren zur Herstellung einer Metallgraphitbürste |
JP3782446B2 (ja) * | 1994-04-28 | 2006-06-07 | 新日本製鐵株式会社 | 高強度高温用自己潤滑性複合材料およびその製造方法 |
US6222298B1 (en) * | 1997-06-08 | 2001-04-24 | Mitsuba Corporation | Carbon commutator and method for producing the same |
US6132487A (en) * | 1998-11-11 | 2000-10-17 | Nikko Materials Company, Limited | Mixed powder for powder metallurgy, sintered compact of powder metallurgy, and methods for the manufacturing thereof |
AUPP773998A0 (en) * | 1998-12-16 | 1999-01-21 | Public Transport Corporation of Victoria | Low resistivity materials with improved wear performance for electrical current transfer and methods for preparing same |
-
2002
- 2002-01-19 DE DE10201923A patent/DE10201923B4/de not_active Expired - Fee Related
- 2002-11-28 DE DE50211452T patent/DE50211452D1/de not_active Expired - Lifetime
- 2002-11-28 EP EP02026559A patent/EP1329993B1/de not_active Expired - Lifetime
- 2002-11-28 AT AT02026559T patent/ATE382969T1/de active
-
2003
- 2003-01-17 US US10/346,824 patent/US7449144B2/en not_active Expired - Fee Related
- 2003-01-17 JP JP2003009275A patent/JP4073319B2/ja not_active Expired - Fee Related
-
2008
- 2008-09-18 US US12/284,081 patent/US20090029184A1/en not_active Abandoned
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE154287C (de) * | ||||
DE289101C (de) * | ||||
DE182445C (de) * | 1905-10-01 | 1907-02-04 | Geb Siemens & Co | Verfahren zur Herstellung von Schleif- und Druckkontakten, die aus Metallegierungen und Kohle bestehen. |
CH82327A (de) * | 1919-01-28 | 1919-09-16 | Siemens & Co Geb | Verfahren zur Herstellung von Schleif- und Druckkontakten, die aus Metall und Kohlenstoff bestehen |
DE845977C (de) * | 1942-11-13 | 1952-08-07 | Lorraine Carbone | Verfahren zur Herstellung von Buersten fuer elektrische Maschinen |
DE1273054B (de) * | 1963-05-01 | 1968-07-18 | Morganite Carbon Ltd | Kontaktbuerste fuer elektrische Maschinen und Verfahren zu ihrer Herstellung |
US5227689A (en) * | 1989-08-11 | 1993-07-13 | Mabuchi Motor Co., Ltd. | Metal-filled graphite for miniature motors and method of making same |
DE4024021A1 (de) * | 1990-07-28 | 1992-01-30 | Ringsdorff Werke Gmbh | Kohlenstoffhaltiges gleitstueck |
US5270504A (en) * | 1991-07-22 | 1993-12-14 | Deutsche Carbone Aktiengesellschaft | Sliding contact member for high currrent densities |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3168944A1 (de) * | 2015-11-11 | 2017-05-17 | Schunk Gerhard Carbon Technology GmbH | Schleifkontakt |
Also Published As
Publication number | Publication date |
---|---|
JP2003272795A (ja) | 2003-09-26 |
EP1329993B1 (de) | 2008-01-02 |
US20090029184A1 (en) | 2009-01-29 |
DE50211452D1 (de) | 2008-02-14 |
DE10201923A1 (de) | 2003-08-07 |
US7449144B2 (en) | 2008-11-11 |
DE10201923B4 (de) | 2006-05-24 |
EP1329993A3 (de) | 2005-12-21 |
JP4073319B2 (ja) | 2008-04-09 |
ATE382969T1 (de) | 2008-01-15 |
US20030135993A1 (en) | 2003-07-24 |
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