DE10001109A1 - Gekühlte Schaufel für eine Gasturbine - Google Patents
Gekühlte Schaufel für eine GasturbineInfo
- Publication number
- DE10001109A1 DE10001109A1 DE10001109A DE10001109A DE10001109A1 DE 10001109 A1 DE10001109 A1 DE 10001109A1 DE 10001109 A DE10001109 A DE 10001109A DE 10001109 A DE10001109 A DE 10001109A DE 10001109 A1 DE10001109 A1 DE 10001109A1
- Authority
- DE
- Germany
- Prior art keywords
- cooling
- channels
- internal
- film
- blade
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/14—Form or construction
- F01D5/18—Hollow blades, i.e. blades with cooling or heating channels or cavities; Heating, heat-insulating or cooling means on blades
- F01D5/187—Convection cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/14—Form or construction
- F01D5/18—Hollow blades, i.e. blades with cooling or heating channels or cavities; Heating, heat-insulating or cooling means on blades
- F01D5/186—Film cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2250/00—Geometry
- F05D2250/30—Arrangement of components
- F05D2250/34—Arrangement of components translated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/20—Heat transfer, e.g. cooling
- F05D2260/202—Heat transfer, e.g. cooling by film cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/20—Heat transfer, e.g. cooling
- F05D2260/221—Improvement of heat transfer
- F05D2260/2214—Improvement of heat transfer by increasing the heat transfer surface
- F05D2260/22141—Improvement of heat transfer by increasing the heat transfer surface using fins or ribs
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
44, . ., 46 Kühleinrichtung
141, . ., 143 Innenkühlungskanal
161, . ., 163 Filmkühlungsbohrung
D Dicke (Wand)
Claims (16)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10001109A DE10001109B4 (de) | 2000-01-13 | 2000-01-13 | Gekühlte Schaufel für eine Gasturbine |
| GB0100586A GB2358226B (en) | 2000-01-13 | 2001-01-09 | Cooled blade for gas turbine |
| US09/758,188 US6379118B2 (en) | 2000-01-13 | 2001-01-12 | Cooled blade for a gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10001109A DE10001109B4 (de) | 2000-01-13 | 2000-01-13 | Gekühlte Schaufel für eine Gasturbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE10001109A1 true DE10001109A1 (de) | 2001-07-19 |
| DE10001109B4 DE10001109B4 (de) | 2012-01-19 |
Family
ID=7627366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE10001109A Expired - Fee Related DE10001109B4 (de) | 2000-01-13 | 2000-01-13 | Gekühlte Schaufel für eine Gasturbine |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US6379118B2 (de) |
| DE (1) | DE10001109B4 (de) |
| GB (1) | GB2358226B (de) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009033753A1 (de) * | 2009-07-17 | 2011-01-27 | Rolls-Royce Deutschland Ltd & Co Kg | Verfahren und Anordnung zur Filmkühlung von Turbinenschaufeln |
| CN108331617A (zh) * | 2017-01-03 | 2018-07-27 | 通用电气公司 | 用于冲击冷却的部件及包括所述部件的旋转机械 |
| WO2022002755A1 (de) * | 2020-07-02 | 2022-01-06 | Siemens Aktiengesellschaft | HEIßGASBAUTEIL EINER GASTURBINE |
| EP2388437B2 (de) † | 2007-01-11 | 2023-04-26 | Raytheon Technologies Corporation | Kühlkreis-Durchflussweg für ein Turbinensektionsprofil |
Families Citing this family (85)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6951193B1 (en) | 2002-03-01 | 2005-10-04 | Draper Samuel D | Film-cooled internal combustion engine |
| US7137776B2 (en) * | 2002-06-19 | 2006-11-21 | United Technologies Corporation | Film cooling for microcircuits |
| US6869268B2 (en) | 2002-09-05 | 2005-03-22 | Siemens Westinghouse Power Corporation | Combustion turbine with airfoil having enhanced leading edge diffusion holes and related methods |
| US6981846B2 (en) * | 2003-03-12 | 2006-01-03 | Florida Turbine Technologies, Inc. | Vortex cooling of turbine blades |
| US7011502B2 (en) * | 2004-04-15 | 2006-03-14 | General Electric Company | Thermal shield turbine airfoil |
| US7118326B2 (en) * | 2004-06-17 | 2006-10-10 | Siemens Power Generation, Inc. | Cooled gas turbine vane |
| US7114923B2 (en) * | 2004-06-17 | 2006-10-03 | Siemens Power Generation, Inc. | Cooling system for a showerhead of a turbine blade |
| GB0424593D0 (en) * | 2004-11-06 | 2004-12-08 | Rolls Royce Plc | A component having a film cooling arrangement |
| US7217095B2 (en) * | 2004-11-09 | 2007-05-15 | United Technologies Corporation | Heat transferring cooling features for an airfoil |
| US7744347B2 (en) * | 2005-11-08 | 2010-06-29 | United Technologies Corporation | Peripheral microcircuit serpentine cooling for turbine airfoils |
| US7364405B2 (en) * | 2005-11-23 | 2008-04-29 | United Technologies Corporation | Microcircuit cooling for vanes |
| CA2642505C (en) * | 2006-02-14 | 2013-06-18 | Ihi Corporation | Cooling structure |
| US7690893B2 (en) * | 2006-07-25 | 2010-04-06 | United Technologies Corporation | Leading edge cooling with microcircuit anti-coriolis device |
| US7686582B2 (en) * | 2006-07-28 | 2010-03-30 | United Technologies Corporation | Radial split serpentine microcircuits |
| US7527474B1 (en) * | 2006-08-11 | 2009-05-05 | Florida Turbine Technologies, Inc. | Turbine airfoil with mini-serpentine cooling passages |
| US7520725B1 (en) | 2006-08-11 | 2009-04-21 | Florida Turbine Technologies, Inc. | Turbine airfoil with near-wall leading edge multi-holes cooling |
| US7866948B1 (en) | 2006-08-16 | 2011-01-11 | Florida Turbine Technologies, Inc. | Turbine airfoil with near-wall impingement and vortex cooling |
| US8197184B2 (en) * | 2006-10-18 | 2012-06-12 | United Technologies Corporation | Vane with enhanced heat transfer |
| US7753650B1 (en) | 2006-12-20 | 2010-07-13 | Florida Turbine Technologies, Inc. | Thin turbine rotor blade with sinusoidal flow cooling channels |
| US7927073B2 (en) * | 2007-01-04 | 2011-04-19 | Siemens Energy, Inc. | Advanced cooling method for combustion turbine airfoil fillets |
| US7717677B1 (en) | 2007-01-31 | 2010-05-18 | Florida Turbine Technologies, Inc. | Multi-metering and diffusion transpiration cooled airfoil |
| RU2346164C2 (ru) * | 2007-02-28 | 2009-02-10 | Открытое акционерное общество "Авиадвигатель" | Рабочая лопатка турбины |
| US7775768B2 (en) * | 2007-03-06 | 2010-08-17 | United Technologies Corporation | Turbine component with axially spaced radially flowing microcircuit cooling channels |
| US7766617B1 (en) | 2007-03-06 | 2010-08-03 | Florida Turbine Technologies, Inc. | Transpiration cooled turbine airfoil |
| US7967566B2 (en) | 2007-03-08 | 2011-06-28 | Siemens Energy, Inc. | Thermally balanced near wall cooling for a turbine blade |
| US7785070B2 (en) * | 2007-03-27 | 2010-08-31 | Siemens Energy, Inc. | Wavy flow cooling concept for turbine airfoils |
| US7967567B2 (en) * | 2007-03-27 | 2011-06-28 | Siemens Energy, Inc. | Multi-pass cooling for turbine airfoils |
| US7717675B1 (en) * | 2007-05-24 | 2010-05-18 | Florida Turbine Technologies, Inc. | Turbine airfoil with a near wall mini serpentine cooling circuit |
| US7857589B1 (en) * | 2007-09-21 | 2010-12-28 | Florida Turbine Technologies, Inc. | Turbine airfoil with near-wall cooling |
| US8047788B1 (en) | 2007-10-19 | 2011-11-01 | Florida Turbine Technologies, Inc. | Turbine airfoil with near-wall serpentine cooling |
| US8052390B1 (en) | 2007-10-19 | 2011-11-08 | Florida Turbine Technologies, Inc. | Turbine airfoil with showerhead cooling |
| ES2427616T3 (es) * | 2008-06-12 | 2013-10-31 | Alstom Technology Ltd | Procedimiento para la fabricación técnica por fundición de una pala para una turbina de gas así como útil para la fabricación de un núcleo de fundición para la fabricación técnica por fundición de la pala |
| US8210814B2 (en) | 2008-06-18 | 2012-07-03 | General Electric Company | Crossflow turbine airfoil |
| US7985050B1 (en) * | 2008-12-15 | 2011-07-26 | Florida Turbine Technologies, Inc. | Turbine blade with trailing edge cooling |
| US8167559B2 (en) * | 2009-03-03 | 2012-05-01 | Siemens Energy, Inc. | Turbine vane for a gas turbine engine having serpentine cooling channels within the outer wall |
| WO2011050025A2 (en) * | 2009-10-20 | 2011-04-28 | Siemens Energy, Inc. | Airfoil incorporating tapered cooling structures defining cooling passageways |
| US9528382B2 (en) * | 2009-11-10 | 2016-12-27 | General Electric Company | Airfoil heat shield |
| US8511994B2 (en) * | 2009-11-23 | 2013-08-20 | United Technologies Corporation | Serpentine cored airfoil with body microcircuits |
| US8894363B2 (en) | 2011-02-09 | 2014-11-25 | Siemens Energy, Inc. | Cooling module design and method for cooling components of a gas turbine system |
| US9017027B2 (en) | 2011-01-06 | 2015-04-28 | Siemens Energy, Inc. | Component having cooling channel with hourglass cross section |
| US8764394B2 (en) | 2011-01-06 | 2014-07-01 | Siemens Energy, Inc. | Component cooling channel |
| US9011077B2 (en) | 2011-04-20 | 2015-04-21 | Siemens Energy, Inc. | Cooled airfoil in a turbine engine |
| US9216491B2 (en) * | 2011-06-24 | 2015-12-22 | General Electric Company | Components with cooling channels and methods of manufacture |
| CH705185A1 (de) | 2011-06-29 | 2012-12-31 | Alstom Technology Ltd | Schaufel für eine Gasturbine sowie Verfahren zum Herstellen einer solchen Schaufel. |
| US20130052037A1 (en) * | 2011-08-31 | 2013-02-28 | William Abdel-Messeh | Airfoil with nonlinear cooling passage |
| US8414263B1 (en) * | 2012-03-22 | 2013-04-09 | Florida Turbine Technologies, Inc. | Turbine stator vane with near wall integrated micro cooling channels |
| EP2828484B2 (de) | 2012-03-22 | 2024-10-09 | Ansaldo Energia IP UK Limited | Turbinenschaufel |
| US9879546B2 (en) | 2012-06-21 | 2018-01-30 | United Technologies Corporation | Airfoil cooling circuits |
| EP2693121B1 (de) | 2012-07-31 | 2018-04-25 | Ansaldo Energia Switzerland AG | Rauheit nahe der Wand für Dämpfungsvorrichtungen zur Verringerung von Druckschwankungen in Verbrennungssystemen |
| WO2014029728A1 (en) | 2012-08-20 | 2014-02-27 | Alstom Technology Ltd | Internally cooled airfoil for a rotary machine |
| CA2884477A1 (en) * | 2012-09-14 | 2014-03-20 | Purdue Research Foundation | Interwoven channels for internal cooling of airfoil |
| EP2738469B1 (de) | 2012-11-30 | 2019-04-17 | Ansaldo Energia IP UK Limited | Verbrennungskammerteil einer Gasturbine mit wandnaher Kühlanordnung |
| EP2964891B1 (de) | 2013-03-05 | 2019-06-12 | Rolls-Royce North American Technologies, Inc. | Komponentenanordnung eines gasturbinenmotors |
| US9874110B2 (en) | 2013-03-07 | 2018-01-23 | Rolls-Royce North American Technologies Inc. | Cooled gas turbine engine component |
| US9638057B2 (en) | 2013-03-14 | 2017-05-02 | Rolls-Royce North American Technologies, Inc. | Augmented cooling system |
| EP3019704B1 (de) * | 2013-07-12 | 2020-11-25 | United Technologies Corporation | Kühlung von gasturbinenmotorkomponenten mit kühlkanalrückführung |
| JP6239938B2 (ja) | 2013-11-05 | 2017-11-29 | 三菱日立パワーシステムズ株式会社 | ガスタービン燃焼器 |
| US10364684B2 (en) | 2014-05-29 | 2019-07-30 | General Electric Company | Fastback vorticor pin |
| EP3149279A1 (de) | 2014-05-29 | 2017-04-05 | General Electric Company | Fastback-turbulator |
| US10280785B2 (en) | 2014-10-31 | 2019-05-07 | General Electric Company | Shroud assembly for a turbine engine |
| US10233775B2 (en) | 2014-10-31 | 2019-03-19 | General Electric Company | Engine component for a gas turbine engine |
| US20160201476A1 (en) * | 2014-10-31 | 2016-07-14 | General Electric Company | Airfoil for a turbine engine |
| EP3124745B1 (de) * | 2015-07-29 | 2018-03-28 | Ansaldo Energia IP UK Limited | Turbomaschinenkomponente mit filmgekühlter wand |
| EP3124746B1 (de) | 2015-07-29 | 2018-12-26 | Ansaldo Energia IP UK Limited | Verfahren zur kühlung einer turbomaschinenkomponente und turbomaschinenkomponente |
| US10871075B2 (en) | 2015-10-27 | 2020-12-22 | Pratt & Whitney Canada Corp. | Cooling passages in a turbine component |
| US10533749B2 (en) * | 2015-10-27 | 2020-01-14 | Pratt & Whitney Cananda Corp. | Effusion cooling holes |
| US10815827B2 (en) * | 2016-01-25 | 2020-10-27 | Raytheon Technologies Corporation | Variable thickness core for gas turbine engine component |
| US10704395B2 (en) * | 2016-05-10 | 2020-07-07 | General Electric Company | Airfoil with cooling circuit |
| US11162370B2 (en) * | 2016-05-19 | 2021-11-02 | Rolls-Royce Corporation | Actively cooled component |
| JP6631822B2 (ja) * | 2017-02-08 | 2020-01-15 | 株式会社Ihi | ファンブレード |
| US11098595B2 (en) * | 2017-05-02 | 2021-08-24 | Raytheon Technologies Corporation | Airfoil for gas turbine engine |
| US10808571B2 (en) * | 2017-06-22 | 2020-10-20 | Raytheon Technologies Corporation | Gaspath component including minicore plenums |
| US10526898B2 (en) * | 2017-10-24 | 2020-01-07 | United Technologies Corporation | Airfoil cooling circuit |
| US10563519B2 (en) * | 2018-02-19 | 2020-02-18 | General Electric Company | Engine component with cooling hole |
| US10767492B2 (en) | 2018-12-18 | 2020-09-08 | General Electric Company | Turbine engine airfoil |
| US11352889B2 (en) | 2018-12-18 | 2022-06-07 | General Electric Company | Airfoil tip rail and method of cooling |
| US11566527B2 (en) | 2018-12-18 | 2023-01-31 | General Electric Company | Turbine engine airfoil and method of cooling |
| US11174736B2 (en) | 2018-12-18 | 2021-11-16 | General Electric Company | Method of forming an additively manufactured component |
| US11499433B2 (en) | 2018-12-18 | 2022-11-15 | General Electric Company | Turbine engine component and method of cooling |
| US10844728B2 (en) | 2019-04-17 | 2020-11-24 | General Electric Company | Turbine engine airfoil with a trailing edge |
| US20200348023A1 (en) * | 2019-05-03 | 2020-11-05 | United Technologies Corporation | Combustor liner panel with micro-circuit core cooling |
| KR102294770B1 (ko) * | 2020-03-13 | 2021-08-27 | 두산중공업 주식회사 | 터빈기관용 터빈 날개의 내부냉각용 미터링 플레이트 |
| CN114109515B (zh) * | 2021-11-12 | 2024-01-30 | 中国航发沈阳发动机研究所 | 一种涡轮叶片吸力面冷却结构 |
| KR20250100203A (ko) * | 2023-12-26 | 2025-07-03 | 두산에너빌리티 주식회사 | 에어포일 및 이를 포함하는 가스 터빈 |
| GB2639585A (en) | 2024-03-18 | 2025-10-01 | Siemens Energy Global Gmbh & Co Kg | A wall section of a hot gas path part for a gas turbine and a method of additive manufacturing of a wall section |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2061729B2 (de) * | 1969-12-16 | 1974-02-28 | Secretary Of State For Defence Of The United Kingdom Of Great Britain And Northern Ireland, London | Gekühlte Turbinenhohlschaufel |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4384823A (en) | 1980-10-27 | 1983-05-24 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Curved film cooling admission tube |
| GB2283538B (en) * | 1984-12-01 | 1995-09-13 | Rolls Royce | Air cooled gas turbine aerofoil |
| US4669957A (en) | 1985-12-23 | 1987-06-02 | United Technologies Corporation | Film coolant passage with swirl diffuser |
| US4770608A (en) * | 1985-12-23 | 1988-09-13 | United Technologies Corporation | Film cooled vanes and turbines |
| US5720431A (en) * | 1988-08-24 | 1998-02-24 | United Technologies Corporation | Cooled blades for a gas turbine engine |
| US5667359A (en) * | 1988-08-24 | 1997-09-16 | United Technologies Corp. | Clearance control for the turbine of a gas turbine engine |
| US5383766A (en) * | 1990-07-09 | 1995-01-24 | United Technologies Corporation | Cooled vane |
| US5405242A (en) * | 1990-07-09 | 1995-04-11 | United Technologies Corporation | Cooled vane |
| US5370499A (en) * | 1992-02-03 | 1994-12-06 | General Electric Company | Film cooling of turbine airfoil wall using mesh cooling hole arrangement |
| US5651662A (en) * | 1992-10-29 | 1997-07-29 | General Electric Company | Film cooled wall |
| US5419681A (en) * | 1993-01-25 | 1995-05-30 | General Electric Company | Film cooled wall |
| US5702232A (en) * | 1994-12-13 | 1997-12-30 | United Technologies Corporation | Cooled airfoils for a gas turbine engine |
| EP0742347A3 (de) * | 1995-05-10 | 1998-04-01 | Allison Engine Company, Inc. | Turbinenschaufelkühlung |
| US5752801A (en) * | 1997-02-20 | 1998-05-19 | Westinghouse Electric Corporation | Apparatus for cooling a gas turbine airfoil and method of making same |
| DE59804336D1 (de) * | 1997-07-29 | 2002-07-11 | Siemens Ag | Turbinenschaufel sowie verfahren zur herstellung einer turbinenschaufel |
| US5931638A (en) * | 1997-08-07 | 1999-08-03 | United Technologies Corporation | Turbomachinery airfoil with optimized heat transfer |
| US6247896B1 (en) * | 1999-06-23 | 2001-06-19 | United Technologies Corporation | Method and apparatus for cooling an airfoil |
| US6254334B1 (en) * | 1999-10-05 | 2001-07-03 | United Technologies Corporation | Method and apparatus for cooling a wall within a gas turbine engine |
-
2000
- 2000-01-13 DE DE10001109A patent/DE10001109B4/de not_active Expired - Fee Related
-
2001
- 2001-01-09 GB GB0100586A patent/GB2358226B/en not_active Expired - Lifetime
- 2001-01-12 US US09/758,188 patent/US6379118B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2061729B2 (de) * | 1969-12-16 | 1974-02-28 | Secretary Of State For Defence Of The United Kingdom Of Great Britain And Northern Ireland, London | Gekühlte Turbinenhohlschaufel |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2388437B2 (de) † | 2007-01-11 | 2023-04-26 | Raytheon Technologies Corporation | Kühlkreis-Durchflussweg für ein Turbinensektionsprofil |
| DE102009033753A1 (de) * | 2009-07-17 | 2011-01-27 | Rolls-Royce Deutschland Ltd & Co Kg | Verfahren und Anordnung zur Filmkühlung von Turbinenschaufeln |
| CN108331617A (zh) * | 2017-01-03 | 2018-07-27 | 通用电气公司 | 用于冲击冷却的部件及包括所述部件的旋转机械 |
| WO2022002755A1 (de) * | 2020-07-02 | 2022-01-06 | Siemens Aktiengesellschaft | HEIßGASBAUTEIL EINER GASTURBINE |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0100586D0 (en) | 2001-02-21 |
| GB2358226A (en) | 2001-07-18 |
| US6379118B2 (en) | 2002-04-30 |
| US20010016162A1 (en) | 2001-08-23 |
| DE10001109B4 (de) | 2012-01-19 |
| GB2358226B (en) | 2003-09-24 |
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