CN1276469A - Exhaust-gas turbo charger with failure fuel tank - Google Patents
Exhaust-gas turbo charger with failure fuel tank Download PDFInfo
- Publication number
- CN1276469A CN1276469A CN00118017A CN00118017A CN1276469A CN 1276469 A CN1276469 A CN 1276469A CN 00118017 A CN00118017 A CN 00118017A CN 00118017 A CN00118017 A CN 00118017A CN 1276469 A CN1276469 A CN 1276469A
- Authority
- CN
- China
- Prior art keywords
- exhaust
- gas turbocharger
- oil
- bearing housing
- supplying device
- 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
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Classifications
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- 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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/18—Lubricating arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
- F02B39/14—Lubrication of pumps; Safety measures therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/12—Closed-circuit lubricating systems not provided for in groups F01M1/02 - F01M1/10
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
- F01M11/02—Arrangements of lubricant conduits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas- turbine plants for special use
- F02C6/04—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output
- F02C6/10—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output supplying working fluid to a user, e.g. a chemical process, which returns working fluid to a turbine of the plant
- F02C6/12—Turbochargers, i.e. plants for augmenting mechanical power output of internal-combustion piston engines by increase of charge pressure
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- 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
- F05D2220/00—Application
- F05D2220/40—Application in turbochargers
Abstract
The object of the invention is to provide an emergency oil tank which is arranged in the bearing housing of an exhaust-gas turbocharger and has a simple and cost-effective feed arrangement for the lubricating oil. To this end, the oil feed (8) connected to a lubricating-oil reservoir (10) via a feed line (9) is arranged in the interior of the bearing housing (5) and is connected to the feed line (9) below the shaft axis (3).
Description
The present invention relates to a kind of emergency oil tank of using as claim 1 exhaust-gas turbocharger as described in the preamble.
The lubricating point of exhaust-gas turbocharger is supplied to the lubricant oil of the internal-combustion engine that is attached thereto usually.For avoiding when the internal combustion (IC) engine lubricating oil supply was lost efficacy, damaging exhaust-gas turbocharger, must at first supply the lubricant oil of certain hour to the exhaust-gas turbocharger that remains in operation at a high speed.For this reason on the housing of exhaust-gas turbocharger or in have an emergency oil tank, itself or be arranged in the main flow or be arranged in the by-pass flow, arrange with the lubricating point serial or parallel connection of exhaust-gas turbocharger in other words.
At (the Mitsubishi Heavy Industries of heavy duty industrial company of Mitsubishi, Ltd.) the publication MET 83SD Turbocharger Overhaul Procedure of company, Januar 1996, the 4th page, disclose a kind of like this exhaust-gas turbocharger, it has an emergency oil tank that is arranged in the bearing housing.This emergency oil tank is arranged in main flow and oily by an one-way valve and the oil supplying device that is connected with a pipeline supply that is connected on the emergency oil tank.Oil supplying device but also can when exhaust-gas turbocharger is installed, install not only at the pipeline of the outside side of bearing housing.Require the respective support on exhaust-gas turbocharger for this reason.Bearing housing must be free approaching at this position on the other hand, so that measure and supervision.Because exhaust-gas turbocharger must be isolated with its environment in working order the time, so the support of pipeline and accessibility all have to realize with bigger technical fee.Also make the corresponding increase of structure space thus except making the cost raising, this finally causes the competitive capacity of exhaust-gas turbocharger to be subjected to negative effect.
The present invention attempts to avoid above-mentioned all shortcomings.Its purpose is, a kind of interior emergency oil tank of bearing housing that is arranged in exhaust-gas turbocharger is provided, and this fuel tank has simple and economic oil feeding device.
Since one is made in bearing housing like this toward the oil supplying device of accident fuel tank and below axis with being connected of supply line, do not require the structure space that is used for this oil supplying device at the upper area of exhaust-gas turbocharger, correspondingly do not need its support yet.Owing to do not need to support, so needn't interrupt isolation layer, the mounting cost of exhaust-gas turbocharger can obviously reduce thus in addition.The measurement joint that is arranged in the bearing housing position equally can not covered by oil supplying device, and this has improved the accessibility of measuring and monitoring.
Oil supplying device has a filler opening that is positioned at the axis below to enter bearing housing.A return opening is formed at the bottom at bearing housing, and wherein filler opening preferably is located immediately at the top of return opening.Can realize that thus filler opening is connected with the simple of lubricant oil container that is positioned at the exhaust-gas turbocharger outside with return opening.It is easier that this connection is not only installed, and obviously more stable than two discrete pipelines.Oil supplying device or be made of a pipe that is cast in the bearing housing perhaps is made of a passage that gets out in bearing housing.Thereby guaranteed simple economic manufacturing in this way.Be preferably in second oil supplying device and being connected with emergency oil tank equally is set in the bearing housing.Second oil supplying device has second filler opening.Be furnished with an oil supplying device in the axle both sides of exhaust-gas turbocharger for this reason.Form second return opening in the bottom of bearing housing, wherein second filler opening is located immediately at the top of second return opening.But emergency oil tank always only is connected with the lubricant oil container with the oil feed line that is connected on thereafter by one in two oil supplying devices.
By second oil supplying device and by layout of the present invention, make exhaust-gas turbocharger to be connected on the lubricant oil container according to specific circumstances or with the one side or with its opposite side.
Especially preferably, on each oil supplying device or in an one-way valve is set.Thereby such one-way valve is always arranged in the on-stream oil supplying device.In this way, because the fault that the transformation from passive fuel feeding to the active fuel feeding causes does not take place in one-way valve can avoid.
At last, use the lubricating oil tank of the internal-combustion engine that links to each other with exhaust-gas turbocharger to have more advantage than the lubricant oil container that is arranged in the exhaust-gas turbocharger outside.
Show two embodiments of the present invention by the exhaust-gas turbocharger that links to each other with internal-combustion engine in the accompanying drawing.
Be illustrated as:
Fig. 1 is the schematic representation of the exhaust-gas turbocharger that links to each other with internal-combustion engine in the prior art;
Fig. 2 is the cross-sectional view that has the exhaust-gas turbocharger bearing housing of pipeline of the present invention;
Fig. 3 is the view with Fig. 2, but is in second embodiment.
Only show among the figure understanding the more important part of the present invention.For example the compressor of exhaust-gas turbocharger and turbo machine do not illustrate.The flow direction of working medium illustrates with arrow.
Exhaust-gas turbocharger 1 mainly is made up of a unshowned compressor and a same unshowned turbo machine that is supported by common shaft 2, and they are installed in respectively in the housing.Axis 3 levels are passed axle 2.The supporting of axle 2 relates to a so-called inboard bearing, and position axle 2 supports that increase in other words between compressor and the turbo machine increase on the corresponding bearing 4.Axle 2 positions between compressor and turbo machine, block bearing 4 are surrounded by bearing housing 5, and bearing housing 5 not only links to each other with compressor housing, and links to each other with turbine cylinder.
Fig. 1 has illustrated the exhaust-gas turbocharger 1 that links to each other with internal-combustion engine 6 of the prior art with schematic representation, and wherein the ratio between two machines is not corresponding with reality.In bearing housing 5 inside, an emergency oil tank 7 is installed in the zone at an upper portion thereof.This emergency oil tank 7 is received the lubricant oil container 10 that is designed to oil storage of internal-combustion engine 6 by oil supplying device 8 and the supply pipeline 9 that is attached thereto.Oil supplying device 8 was realized with being connected by flange 11 of supply pipeline 9 like this, realized with being connected by case lid 12 of emergency oil tank 7.A supply pump 13 is set in supply pipeline 9, increases an one-way valve 14 is set in the oil supplying device 8.Between bearing 4 and emergency oil tank 7, form supply passage 15.The foot of this external bearing housing 5, the both sides of axle 2 are provided with a return opening 16,16 ' respectively.But only a return opening 16 is connected with the lubricant oil container 10 of internal-combustion engine 6 by return line 17.Second return opening 16 ' is by 18 sealings of a lid.Be provided with ventilation flue 19 in bearing housing 5, its end in reaching emergency oil tank 7 has throttling arrangement 20, and its other end flows in the free space 21 of bearing housing 5.
When internal-combustion engine 6 runnings, high-temp waste gas enters turbo machine and drives it.This turbo machine drives the compressor that links to each other by axle 2 with it again.Compressed gas arrives internal-combustion engine 6 and in this supercharging, is used to improve power in other words by unshowned supply pipeline in compressor.In this process, axle 2 and all components thereof reach very high peripheral velocity.In order further to make the friction that is attached thereto be kept to minimum, in this process, continue to axle 2 supplying lubricating oils 22.Lubricant oil 22 enters in the emergency oil tank 7 through supply pipeline 9 and oil supplying device 8 by the lubricant oil container 10 of supply pump 13 from internal-combustion engine 6 for this reason, from then on sets out then, passes to bearing 4 through supply passage 15.Emergency oil tank 7 is arranged in main flow like this, thereby continues to be under the pressure.Lubricant oil 22 is then got back to the lubricant oil container 10 of internal-combustion engine 6 through return opening 16 and return line 17 from bearing 4.
Break down if the lubricant oil of internal-combustion engine 6 is supplied with, then the pasta level in the emergency oil tank 7 descends.In this case, the d/d space of emergency oil tank 7 is full of from the air in the bearing housing 5 by ventilation flue 19 and throttling arrangement 20, and oil supplying device 8 guarantees that by one-way valve 14 lubricant oil 22 does not reflux.Therefore the supply at the bearing place of exhaust-gas turbocharger 1 can guarantee that still the lubricant oil 22 in emergency oil tank 7 exhausts.Can or turn off exhaust-gas turbocharger 1 this moment, perhaps recovers the supply of lubricant oil again.And owing to lack the damage that exhaust-gas turbocharger 1 appears in lubricant oil 22 and avoided.
In first embodiment of the present invention, oil supplying device 8 is opposite with described layout of the prior art, is not the outside that is arranged in bearing housing 5, but is connected with supply pipeline 9 in the inside of bearing housing 5 and below axis 3.In ready-made bearing housing 5, get out corresponding passage 23 for this reason.Oil supplying device 8 has a filler opening 24 that is positioned at below the axis 3 in bearing housing 5, supply pipeline 9 is received on this filler opening.Here filler opening 24 is located immediately at the top (Fig. 2) of the return opening 16 that is formed at bearing housing 5 foots.
Another kind of design proposal and power supply thereof are similar to above-mentioned prior art substantially.Because the oil supplying device 8 that is made of one in bearing housing 5, the adjacent domain in exhaust-gas turbocharger 1 outside does not need to leave structure space for oil supplying device 8 at all.Therefore, neither need the support of oil supplying device 8, also do not need to interrupt the unshowned isolation layer of exhaust-gas turbocharger 1.
In the second embodiment of the present invention, in bearing housing 5, except first oil supplying device 8, also be provided with second oil supplying device 8 '.Each oil supplying device 8 is fixed with an one-way valve 14,14 ' at emergency oil tank 7 positions and is used for its oil supplying device 8.Two oil supplying devices 8 constitute by being cast in bearing housing 5 pipes 25 interior, corresponding shaping.Second oil supplying device 8 is connected with emergency oil tank 7 equally, and is equipped with second filler opening 24 ' (Fig. 3).
Here two oil supplying devices 8,8 ' are arranged in the both sides of the axle 2 of exhaust-gas turbocharger 1.Foot at bearing housing 5 has second return opening 16 '.Second filler opening 24 ' is located immediately at the top of second return opening 16 '.Emergency oil tank 7 only is connected with the lubricant oil container 10 of internal-combustion engine 6 with the supply pipeline 9 that is connected on thereafter by second oil supplying device 8 '.Therefore design big lid 18 ' among ratio first embodiment, not only seal first return opening 16 ' but also seal first filler opening 24 '.
Fuel feeding to bearing 4 is similar to first embodiment substantially, and the oil supplying device 8 that wherein is not connected on the lubricant oil container 10 of internal-combustion engine 6 cuts out by one-way valve 14 relative emergency oil tanks 7.If the lubricant oil container 10 of internal-combustion engine 6 must be received the opposite side of bearing housing 5 according to concrete condition of contact, lid 18 ' correspondingly closes second return opening 16 ' and second filler opening 24 ', then can realize fuel feeding by first oil supplying device 8 and first filler opening 24.Under this unshowned situation, the lubricant oil 22 that flows out from bearing 4 is back to the lubricant oil container 10 through first return opening 16.
Certain two oil supplying devices 8,8 ' can get out in bearing housing 5 as oil supplying device 8 as shown in first embodiment.Oil supplying device 8 also can be made of the pipe that is cast in the bearing housing 5 in the commutation joint in first embodiment.Same emergency oil tank not only can be arranged in the main flow, also can be arranged in (not shown) in the by-pass flow.
Claims (8)
1, the exhaust-gas turbocharger of band emergency oil tank, this emergency oil tank is arranged in bearing housing (5) inside of exhaust-gas turbocharger (1), axis (3) top of exhaust-gas turbocharger (1), the lubricant oil container (10) outside with being positioned at exhaust-gas turbocharger (1) by supply pipeline (9) links to each other, wherein between supply pipeline (9) and emergency oil tank (7), form an oil supplying device (8), it is characterized in that, this oil supplying device (8) is positioned at bearing housing (5) inside, and is connected with supply pipeline (9) in axis (3) below.
2, exhaust-gas turbocharger according to claim 1 is characterized in that, supply pipeline (9) and oil supplying device (8) interconnect by a filler opening (24) that is positioned at bearing housing (5).
3, exhaust-gas turbocharger according to claim 2 is characterized in that, at a foot formation return opening (16) of bearing housing (5), filler opening (24) is located immediately at the top of this return opening (16).
4, exhaust-gas turbocharger according to claim 3 is characterized in that, oil supplying device (8) is constituted or is made of the passage (23) that gets out in bearing housing (5) by a pipe (25) that is cast in the bearing housing (5).
5, exhaust-gas turbocharger according to claim 4 is characterized in that, second oil supplying device (8 ') is set in bearing housing (5), is connected with emergency oil tank (7) and is equipped with second filler opening (24 '), and wherein emergency oil tank (7) but always only passes through; One of two oil supplying devices (8,8 ') link to each other with supply pipeline (9).
6, exhaust-gas turbocharger according to claim 5, it is characterized in that, axle (2) both sides distribution at exhaust-gas turbocharger (1) is provided with an oil supplying device (8,8 '), foot at bearing housing (5) forms second return opening (16 '), and second filler opening (24 ') is located immediately at second return opening (16 ') top.
7, exhaust-gas turbocharger according to claim 6 is characterized in that, each oil supplying device (8,8 ') go up or in an one-way valve (14,14 ') is set.
8, according to each described exhaust-gas turbocharger in the claim 1 to 7, it is characterized in that, be positioned at the oil storage that the outside lubricant oil container (10) of exhaust-gas turbocharger (1) adopts the internal-combustion engine (6) that links to each other with exhaust-gas turbocharger (1).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19925779.5 | 1999-06-05 | ||
| DE19925779.5A DE19925779B4 (en) | 1999-06-05 | 1999-06-05 | Exhaust gas turbocharger with a emergency oil tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1276469A true CN1276469A (en) | 2000-12-13 |
| CN1165672C CN1165672C (en) | 2004-09-08 |
Family
ID=7910345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001180177A Expired - Lifetime CN1165672C (en) | 1999-06-05 | 2000-06-05 | Exhaust-gas turbo charger with failure fuel tank |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP2001020749A (en) |
| KR (1) | KR100641621B1 (en) |
| CN (1) | CN1165672C (en) |
| DE (1) | DE19925779B4 (en) |
| TW (1) | TW528833B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101506491B (en) * | 2006-08-24 | 2011-01-26 | Abb涡轮系统有限公司 | Emergency oil tank |
| CN104185729A (en) * | 2012-03-27 | 2014-12-03 | 博格华纳公司 | Turbocharger bearing housing with cast-in pipes |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19925779B4 (en) * | 1999-06-05 | 2014-01-23 | Abb Turbo Systems Ag | Exhaust gas turbocharger with a emergency oil tank |
| US6793042B2 (en) | 2002-07-24 | 2004-09-21 | Pratt & Whitney Canada Corp. | Dual independent tank and oil system with single port filling |
| DE10324986B4 (en) * | 2003-06-03 | 2005-11-10 | Man B & W Diesel Ag | Device for emergency lubrication |
| EP1848883B1 (en) * | 2005-01-06 | 2015-09-16 | Mahindra & Mahindra Ltd. | System for providing continuous lubrication to engine turbocharger shaft and bearing arrangement |
| DE102008016046A1 (en) * | 2008-03-28 | 2009-10-01 | Bosch Mahle Turbo Systems Gmbh & Co. Kg | Loading device, particularly supercharger for motor vehicle with internal combustion engine, has shaft stored in housing and carries turbine wheel at turbine side and compressor wheel at compressor side |
| KR101880165B1 (en) * | 2011-04-13 | 2018-07-19 | 보르그워너 인코퍼레이티드 | Exhaust-gas turbocharger |
| IN2014DN07369A (en) | 2012-02-17 | 2015-04-24 | Borgwarner Inc | |
| JP6518282B2 (en) * | 2017-03-28 | 2019-05-22 | 株式会社Ｓｕｂａｒｕ | Oil supply device |
| DE102017114609A1 (en) * | 2017-06-30 | 2019-01-03 | Man Diesel & Turbo Se | Exhaust gas turbocharger with chambered oil distribution chamber |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4157744A (en) * | 1977-07-18 | 1979-06-12 | Capriotti Lawrence J | Lubricating and cooling engine system component |
| DE2846975A1 (en) * | 1978-10-28 | 1980-05-08 | Ernst Dipl Ing Mueller | Turbocharger after-lubrication equipment - has spring loaded piston discharging from vessel on drop in oil pressure |
| CS208523B1 (en) * | 1979-06-01 | 1981-09-15 | Jan Tauchen | Lubricating device of the supercharged combustion engine |
| US4363214A (en) * | 1980-07-07 | 1982-12-14 | Kiser Robert W | Turbo-lubrication system |
| JPS6027730A (en) * | 1983-07-27 | 1985-02-12 | Taiho Kogyo Co Ltd | Turbocharger lubricating apparatus |
| JPS6027731A (en) * | 1983-07-27 | 1985-02-12 | Taiho Kogyo Co Ltd | Oil supplying apparatus for vehicle |
| JPS6184140U (en) * | 1984-11-09 | 1986-06-03 | ||
| JPS6234128U (en) * | 1985-08-16 | 1987-02-28 | ||
| JPH0652053B2 (en) * | 1985-10-30 | 1994-07-06 | 三菱重工業株式会社 | Exhaust gas turbine supercharger structure |
| JPS62114141U (en) * | 1986-01-10 | 1987-07-20 | ||
| JPH04121431U (en) * | 1991-04-15 | 1992-10-29 | 三菱重工業株式会社 | Head tank structure of exhaust gas turbine turbocharger |
| JPH09190853A (en) * | 1995-11-14 | 1997-07-22 | Whitaker Corp:The | Electric connector |
| KR19980027897A (en) * | 1996-10-18 | 1998-07-15 | 박병재 | Oil supply device to prevent seizure of turbocharger |
| DE19925779B4 (en) * | 1999-06-05 | 2014-01-23 | Abb Turbo Systems Ag | Exhaust gas turbocharger with a emergency oil tank |
-
1999
- 1999-06-05 DE DE19925779.5A patent/DE19925779B4/en not_active Expired - Lifetime
-
2000
- 2000-05-30 KR KR1020000029276A patent/KR100641621B1/en active IP Right Grant
- 2000-06-01 JP JP2000164481A patent/JP2001020749A/en active Pending
- 2000-06-05 TW TW089110962A patent/TW528833B/en not_active IP Right Cessation
- 2000-06-05 CN CNB001180177A patent/CN1165672C/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101506491B (en) * | 2006-08-24 | 2011-01-26 | Abb涡轮系统有限公司 | Emergency oil tank |
| CN104185729A (en) * | 2012-03-27 | 2014-12-03 | 博格华纳公司 | Turbocharger bearing housing with cast-in pipes |
| US10006468B2 (en) | 2012-03-27 | 2018-06-26 | Borgwarner Inc. | Turbocharger bearing housing with cast-in pipes |
Also Published As
| Publication number | Publication date |
|---|---|
| TW528833B (en) | 2003-04-21 |
| DE19925779B4 (en) | 2014-01-23 |
| DE19925779A1 (en) | 2000-12-07 |
| KR20010007143A (en) | 2001-01-26 |
| JP2001020749A (en) | 2001-01-23 |
| KR100641621B1 (en) | 2006-11-02 |
| CN1165672C (en) | 2004-09-08 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ABB SWITZERLAND CO., LTD. Free format text: FORMER OWNER: ABB SWITZERLAND HOLDINGS CO., LTD. Effective date: 20050218 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20050218 Address after: Baden, Switzerland Patentee after: ABB Schweiz AG Address before: Baden, Switzerland Patentee before: Asea Brown Boveri AB |
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| CX01 | Expiry of patent term |
Granted publication date: 20040908 |
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| CX01 | Expiry of patent term |