CN1080368A - Filter silencer - Google Patents
Filter silencer Download PDFInfo
- Publication number
- CN1080368A CN1080368A CN93106977A CN93106977A CN1080368A CN 1080368 A CN1080368 A CN 1080368A CN 93106977 A CN93106977 A CN 93106977A CN 93106977 A CN93106977 A CN 93106977A CN 1080368 A CN1080368 A CN 1080368A
- Authority
- CN
- China
- Prior art keywords
- filter
- noise reduction
- parts
- reduction parts
- silencer
- 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
- 230000003584 silencer Effects 0.000 title claims description 18
- 230000030279 gene silencing Effects 0.000 claims abstract description 16
- 238000005266 casting Methods 0.000 claims abstract description 7
- 230000002093 peripheral effect Effects 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 11
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 230000005284 excitation Effects 0.000 abstract description 2
- 230000035939 shock Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000001138 tear Anatomy 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
- F02M35/1205—Flow throttling or guiding
- F02M35/1211—Flow throttling or guiding by using inserts in the air intake flow path, e.g. baffles, throttles or orifices; Flow guides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
- F02M35/1205—Flow throttling or guiding
- F02M35/1227—Flow throttling or guiding by using multiple air intake flow paths, e.g. bypass, honeycomb or pipes opening into an expansion chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/14—Combined air cleaners and silencers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
Abstract
Make a slip of the tongue in the filter baffler having a plurality of annular noise reduction parts of forming by the silencing block that is arranged on the peripheral direction (2) and compressor air suction (2a), its agent structure is an one piece casting, silencing block is fixed on the support member by the trough of belt rib of radially casting, and filter frame is formed with the interconnected detachable porous slab of link by a porous slab or by polylith.Advantage of the present invention is that mainly assembling is simplified, parts reduce, cost reduces except that others, even and under the situation of higher frequency excitation, the erasure effect of improvement is also arranged.
Description
The present invention relates to the filter silencer of compressor air suction mouth, it has a plurality of annular noise reduction parts, and curved guide parts all can be synthesized in the interior edge of each parts.
This type of baffler is known, is used to eliminate the sound wave that produces during the compressor operation of devices such as exhaust turbine supercharger or gas turbine.For this purpose, they have many noise reduction parts baffler inner space that is arranged in spaced a certain distance.The noise reduction parts generally are made up of a support member and a noise reduction part of being made by quieter material.
The filter of inhaled air through being installed on the baffler periphery flows into the baffler inner space, enters compressor through the noise reduction part again, produces the sound wave opposite with airflow direction by compressor, thereby pressure maximum and pressure minimum occur.Under the situation of pressure maximum, the air stream warp also is forced in the quieter material, and under the situation of pressure minimum, air sucking-off from these materials again, thus erasure effect guaranteed.So the noise reduction part plays the buffer effect, has compensated the pressure difference between pressure maximum and the pressure minimum to a certain extent, thereby has reduced the amplitude of sound wave.
A kind of discoidal noise reduction parts have been described among the patent specification CH593426, it by a support member, be installed in the noise reduction part of support member both sides and form by the fixing grid part of rivet.The noise reduction part is clipped between the grid part, and support member has a continuous core, and recessed gradually on both sides.Disc noise reduction parts interior along can synthetic curved guide parts (also shown in patent specification CH594139), thus the air flow deflector that radially enters is flowed to predetermined outlet, avoided the loss that causes because of eddy current with this.
The noise reduction parts of being made up of the many fritters that are arranged on the peripheral direction also are known.These noise reduction parts support with a root system bar, are fixed together by means of distance bushing, and are fixed in the silencer casing.
All there are some shortcomings in these designs.Vibrating under the very strong situation, finding that above-mentioned baffler becomes a time-dependent system when being subjected to the higher frequency excitation, thereby can not unrestrictedly use.Because of this class baffler is made up of many single parts, so its assembling requires height.In addition, the noise reduction part also can become flexible and weares and teares owing to compression shock and thermal shock.
The present invention attempts to avoid all these shortcomings.So the objective of the invention is to create a kind of baffler that starts said the sort of type at this paper, even this baffler also forms a stable system under the situation of judder, it is characterized in that cost of production is low for known baffler, and improved the baffler function.In addition, it is also based on another purpose, and promptly the design of baffler makes that not dismantling filter frame just can carry out the filter cleaning easily.
According to the present invention, this realizes with the following method: the main body of filter silencer is that cast inblock forms; Silencing block adopts the radially casting rib of trough of belt to be fixed on the support member; Filter frame is formed by a dismountable porous slab or with the detachable porous slab of the interconnective polylith of connected element, can prevent from like this to come off.
As seen advantage of the present invention mainly is to have simplified assembling, reduced component number except that others, even and the erasure effect of improvement arranged also when the compressor high speed rotating.Orifice plate breaks into circular hole, and silencing block with clamping bolt or clip as connected element, also convenient especially.
Two outside baffler parts are installed on casing wall are made other baffler parts of wall ratio thin, and each baffler parts is made up of a plurality of (preferred 4) silencing block, these also all are favourable.Silencing block is preferably made discoid, but also can do tapered or dish-shaped.Crooked guide element is preferably joined in the interior edge of inner noise reduction parts.At last, preferably adopt the filter material of plastics.
One embodiment of the present of invention as shown in the figure, wherein
Fig. 1 represents to have the part longitudinal section of the filter silencer of disc baffler parts.
Fig. 2 represents part plane view (no filter frame).
Fig. 3 is illustrated near the part viewgraph of cross-section that passes through baffler on the plane of baffler parts front, and arrow marks installation direction.
Fig. 4 represents part plane view (band filter frame).
Only draw among the figure to understanding parts essential to the invention.
In filter silencer shown in Figure 1, main body is made of an one piece casting.It uses the chill casting manufactured.
Baffler is by being connected such as the silencer casing on the compressor of air-discharging and supercharging device 1 securely, being essentially the discoidal filter 5 that is installed in baffler parts 2 and the 2a in shell 1 inner space and is installed on shell 1 periphery and forming.Baffler parts 2 edge within it form crooked guide element 4, thereby have avoided the eddy current loss of new appearance shunting to a great extent.Be positioned at the outside baffler parts of disc 2a on the casing wall and have only half of baffler parts 2 axial depth usually, and do not have guide element 4.
Baffler parts 2 and 2a form by 4 silencing blocks 3, and this can be as can be seen from Figure 3.Silencing block 3 is made by two blocks of porous slabs of splitting that support quieter material.
The assembling of silencing block 3 is very simple, and can be as can be seen from Figure 3.Silencing block 3 is from radially advancing main body, and fixing with the groove 6 of radially arranging.Filter 5 is radially clamping and fixing silencing block 3.With prior art relatively, needn't be with the fixing silencing block of rivet, thus reduced matching requirements.
In addition, no longer need to clamp silencing block 3 with tie-rod, because main body has only parts, even vibrating under the very strong situation, baffler totally also is a very stable system.Necessary keeping by means of the interval axle sleeve according to prior art at interval between the baffler parts 2 is so matching requirements reduce once more.
The filter frame design also brings further advantage.This is formed by a round-meshed porous slab 7, in another embodiment according to Fig. 4, is to be formed by the round-meshed porous slab 7 of polylith perhaps, and these porous slabs link together with clamping bolt 8.Pull down grid 9, filter material can be taken out, and need not to dismantle filter frame and can easily clean.Than previously used delthyrium porous slab, the circular hole of porous slab 7 makes that the crosspassage area is bigger, thereby has reduced the pressure loss on the filter.
As filter material, by grid 9 it is compressed into filter frame with plastics from the outside.Under the situation of the original copper material that adopts usually, filter material often ruptures when judder, causes bigger foreign material to enter compressor and makes it to suffer damage.Then can avoid this situation with plastics.
The reference symbol table
1. silencer casing
2. muffler parts
3. silencing block
4. guiding parts
5. filter
6. groove
7. porous slab
8. connected element
9. grid
Claims (9)
1, the filter silencer of compressor air suction mouth, described baffler has a plurality of annular noise reduction parts (2) and (2a), these parts each interval constant distances also are made up of a plurality of piece spares of arranging along peripheral direction (3), and the filter (5) that is arranged in the baffler periphery arranged, it is characterized in that: its agent structure is an one piece casting, silencing block (3) is fixed on the support member with the radially casting rib that has groove (6), and filter frame is formed by a detachable porous slab (7) or by the detachable porous slab of polylith (7) of using connected element (8) to connect each other.
2, according to the filter silencer of claim 1, it is characterized in that: porous slab (7) has circular hole.
3, according to the filter silencer of claim 1, it is characterized in that: connected element (8) is clip or screw type link or clamping bolt.
4, according to the filter silencer of claim 1, it is characterized in that: filter material is made of plastics.
5, according to the filter silencer of claim 1, it is characterized in that: noise reduction parts (2) interior along can synthetic guide element (4), the axial depth of two the outside noise reduction parts (2a) on shell body wall (1) less than other noise reduction parts (2) and in it edge can not synthesize guide element (4).
6, according to the filter silencer of claim 6, it is characterized in that: each noise reduction parts (2) and (2a) form by 4 silencing blocks (3).
7, according to the filter silencer of claim 1, it is characterized in that: noise reduction parts (2) are discoidal.
8, according to the filter silencer of claim 1, it is characterized in that: noise reduction parts (2) are tapers.
9, according to the filter silencer of claim 1, it is characterized in that: noise reduction parts (2) are dish-shaped.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP92110222A EP0574605B1 (en) | 1992-06-17 | 1992-06-17 | Filter-silencer |
| EP92110222.4 | 1992-06-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1080368A true CN1080368A (en) | 1994-01-05 |
| CN1031011C CN1031011C (en) | 1996-02-14 |
Family
ID=8209718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93106977A Expired - Lifetime CN1031011C (en) | 1992-06-17 | 1993-06-17 | Filter silencer |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0574605B1 (en) |
| JP (1) | JP3428684B2 (en) |
| KR (1) | KR100266913B1 (en) |
| CN (1) | CN1031011C (en) |
| DE (1) | DE59207544D1 (en) |
| PL (1) | PL171061B1 (en) |
| RU (1) | RU2106539C1 (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427748C (en) * | 2006-12-18 | 2008-10-22 | 南阳市宜和发电设备有限公司 | Environment-friendly tank-mounted energy-saving device for engine |
| CN101063458B (en) * | 2006-04-28 | 2010-09-01 | 曼柴油机欧洲股份公司 | Filtering silencer |
| CN102221019A (en) * | 2011-08-02 | 2011-10-19 | 无锡杰尔压缩机有限公司 | Hollow cavity structure of filter silencer sound elimination device |
| CN101506531B (en) * | 2006-08-24 | 2012-07-18 | Abb涡轮系统有限公司 | Fixing mechanism of filter muffler |
| CN104033425A (en) * | 2013-03-06 | 2014-09-10 | Abb涡轮系统有限公司 | Sound attenuator of an exhaust-gas turbocharger |
| CN104169562A (en) * | 2012-02-20 | 2014-11-26 | 三菱重工业株式会社 | Silencer for supercharger |
| CN105089786A (en) * | 2015-08-26 | 2015-11-25 | 成都博世德能源科技股份有限公司 | Novel efficient air intake system of gas turbine |
| CN105089793A (en) * | 2015-08-21 | 2015-11-25 | 成都博世德能源科技股份有限公司 | Efficient silencing air filter cylinder for gas turbine |
| CN105089811A (en) * | 2015-08-26 | 2015-11-25 | 成都博世德能源科技股份有限公司 | Three-grade efficient noise reducing air filter system for gas turbine |
| CN105089804A (en) * | 2015-08-21 | 2015-11-25 | 成都博世德能源科技股份有限公司 | Efficient silencing barrel type air filter used for combustion gas turbine |
| CN105298934A (en) * | 2015-10-30 | 2016-02-03 | 山东超越数控电子有限公司 | Device for achieving noise reduction of fan |
| CN115388037A (en) * | 2022-08-02 | 2022-11-25 | 哈尔滨工程大学 | Supercharger air inlet rectification structure with broadband noise reduction effect |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4438556A1 (en) * | 1994-10-28 | 1996-05-02 | Mann & Hummel Filter | Filters, in particular for filtering the intake air of an internal combustion engine |
| DE19514990B4 (en) * | 1995-04-24 | 2005-06-30 | Abb Turbo Systems Ag | filter silencer |
| US5979595A (en) | 1996-10-18 | 1999-11-09 | New Philadelphia Fan Company | Fan inlet flow controller |
| DE10022240A1 (en) * | 2000-05-08 | 2001-11-15 | Abb Turbo Systems Ag Baden | Filter silencer for induction side of compressor has at least one damping element in form of sound damper block |
| DE50013694D1 (en) * | 2000-09-08 | 2006-12-14 | Abb Turbo Systems Ag | Fastening device for a filter silencer at the compressor inlet of a turbocharger |
| KR100659517B1 (en) * | 2005-12-06 | 2006-12-20 | 양해숙 | Noise reducing apparatus of compressor |
| DE102010028763B4 (en) | 2010-05-07 | 2015-04-02 | Man Diesel & Turbo Se | Silencer for a turbocompressor and method for laying a silencer |
| JP6097188B2 (en) * | 2013-09-25 | 2017-03-15 | 三菱重工業株式会社 | Turbocharger |
| JP6211029B2 (en) * | 2015-03-26 | 2017-10-11 | 三菱重工業株式会社 | Silencer for turbocharger and turbocharger |
| CN108708808A (en) * | 2018-05-31 | 2018-10-26 | 安徽江淮汽车集团股份有限公司 | Air filter assembly |
| DE102019102245A1 (en) | 2019-01-30 | 2020-07-30 | Man Energy Solutions Se | Intake silencer for turbochargers |
| EP3926155A1 (en) * | 2020-06-16 | 2021-12-22 | ABB Schweiz AG | Intake device for a compressor |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1403576A1 (en) * | 1961-07-12 | 1968-11-07 | Maschf Augsburg Nuernberg Ag | Intake silencer |
| CH603208A5 (en) * | 1975-10-02 | 1978-08-15 | Bbc Brown Boveri & Cie | |
| US4204586A (en) * | 1975-12-11 | 1980-05-27 | Bbc Brown Boveri & Company Limited | Silencer on the intake side of a compressor with assembly of axially spaced annular sound-damping elements |
| CH593426A5 (en) * | 1975-12-18 | 1977-11-30 | Bbc Brown Boveri & Cie | |
| DE2729513A1 (en) * | 1977-06-30 | 1979-01-04 | Luefa Werke Gmbh | Plate type intake silencer for large fans - has segmented coaxial tapered plates and circumferential inlet gaps between plates |
-
1992
- 1992-06-17 DE DE59207544T patent/DE59207544D1/en not_active Expired - Fee Related
- 1992-06-17 EP EP92110222A patent/EP0574605B1/en not_active Expired - Lifetime
-
1993
- 1993-06-15 PL PL93299311A patent/PL171061B1/en unknown
- 1993-06-15 JP JP14338693A patent/JP3428684B2/en not_active Expired - Lifetime
- 1993-06-16 KR KR1019930011004A patent/KR100266913B1/en not_active IP Right Cessation
- 1993-06-16 RU RU93049106A patent/RU2106539C1/en active
- 1993-06-17 CN CN93106977A patent/CN1031011C/en not_active Expired - Lifetime
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101063458B (en) * | 2006-04-28 | 2010-09-01 | 曼柴油机欧洲股份公司 | Filtering silencer |
| CN101506531B (en) * | 2006-08-24 | 2012-07-18 | Abb涡轮系统有限公司 | Fixing mechanism of filter muffler |
| CN100427748C (en) * | 2006-12-18 | 2008-10-22 | 南阳市宜和发电设备有限公司 | Environment-friendly tank-mounted energy-saving device for engine |
| CN102221019A (en) * | 2011-08-02 | 2011-10-19 | 无锡杰尔压缩机有限公司 | Hollow cavity structure of filter silencer sound elimination device |
| CN104169562A (en) * | 2012-02-20 | 2014-11-26 | 三菱重工业株式会社 | Silencer for supercharger |
| CN104169562B (en) * | 2012-02-20 | 2017-02-22 | 三菱重工业株式会社 | Pressurized machine silencing apparatus |
| CN104033425A (en) * | 2013-03-06 | 2014-09-10 | Abb涡轮系统有限公司 | Sound attenuator of an exhaust-gas turbocharger |
| CN104033425B (en) * | 2013-03-06 | 2018-01-12 | Abb涡轮系统有限公司 | The silencer of exhaust-driven turbo-charger exhaust-gas turbo charger |
| CN105089804A (en) * | 2015-08-21 | 2015-11-25 | 成都博世德能源科技股份有限公司 | Efficient silencing barrel type air filter used for combustion gas turbine |
| CN105089793A (en) * | 2015-08-21 | 2015-11-25 | 成都博世德能源科技股份有限公司 | Efficient silencing air filter cylinder for gas turbine |
| CN105089811A (en) * | 2015-08-26 | 2015-11-25 | 成都博世德能源科技股份有限公司 | Three-grade efficient noise reducing air filter system for gas turbine |
| CN105089786A (en) * | 2015-08-26 | 2015-11-25 | 成都博世德能源科技股份有限公司 | Novel efficient air intake system of gas turbine |
| CN105298934A (en) * | 2015-10-30 | 2016-02-03 | 山东超越数控电子有限公司 | Device for achieving noise reduction of fan |
| CN115388037A (en) * | 2022-08-02 | 2022-11-25 | 哈尔滨工程大学 | Supercharger air inlet rectification structure with broadband noise reduction effect |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0574605A1 (en) | 1993-12-22 |
| EP0574605B1 (en) | 1996-11-20 |
| KR940000758A (en) | 1994-01-10 |
| DE59207544D1 (en) | 1997-01-02 |
| JPH0658298A (en) | 1994-03-01 |
| PL299311A1 (en) | 1994-01-24 |
| KR100266913B1 (en) | 2000-09-15 |
| PL171061B1 (en) | 1997-02-28 |
| CN1031011C (en) | 1996-02-14 |
| JP3428684B2 (en) | 2003-07-22 |
| RU2106539C1 (en) | 1998-03-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ABB SWITZERLAND HOLDINGS CO., LTD. Free format text: FORMER NAME OR ADDRESS: YA RUIYA BOLANGBOWLIC CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Patentee after: Asea Brown Boveri AB Patentee before: Asea Brown Boveri Ltd. |
|
| 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: 20050325 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20050325 Address after: Baden, Switzerland Patentee after: ABB Schweiz AG Address before: Baden, Switzerland Patentee before: Asea Brown Boveri AB |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130617 Granted publication date: 19960214 |