EP0955466B1 - Spaltringdichtung - Google Patents
Spaltringdichtung Download PDFInfo
- Publication number
- EP0955466B1 EP0955466B1 EP98106690A EP98106690A EP0955466B1 EP 0955466 B1 EP0955466 B1 EP 0955466B1 EP 98106690 A EP98106690 A EP 98106690A EP 98106690 A EP98106690 A EP 98106690A EP 0955466 B1 EP0955466 B1 EP 0955466B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- compartment
- machine according
- sealing
- stage
- 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.)
- Expired - Lifetime
Links
- 238000007789 sealing Methods 0.000 claims abstract description 31
- 239000000463 material Substances 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 12
- 239000007791 liquid phase Substances 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 239000012071 phase Substances 0.000 claims description 2
- 239000012530 fluid Substances 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- -1 hard chrome plating Chemical class 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 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
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
- F04C15/0034—Sealing arrangements in rotary-piston machines or pumps for other than the working fluid, i.e. the sealing arrangements are not between working chambers of the machine
- F04C15/0038—Shaft sealings specially adapted for rotary-piston machines or pumps
Definitions
- the invention relates to a fluid-carrying machine, in particular Pump, with one in a stationary housing part inside an annular gap rotating component, the stationary Housing part with a higher product pressure interior separates from a lower pressure outside space, in which the rotating component is stored in an external bearing is sealed from the interior via a sealing system is.
- the invention relates to a screw pump with at least one feed screw, which was enclosed by a housing is that at least one suction nozzle and at least has a pressure port, the suction port with one of the Conveyor screw upstream suction chamber and the pressure nozzle with a pressure chamber downstream of the screw stand, the facilities for separating the respective liquid phase from the gas phase of the emerging from the screw Medium flow and a lower section for recording of at least a subset of the separated liquid phase has, at this lower pressure chamber section a liquid short-circuit line is connected with communicates with the suction chamber and together with the conveyor elements a closed circuit for permanent sealing forms the required amount of liquid.
- a liquid short-circuit line is connected with communicates with the suction chamber and together with the conveyor elements a closed circuit for permanent sealing forms the required amount of liquid.
- the invention has for its object a machine of the beginning described design with an improved sealing system to develop for the rotating component.
- a two-stage sealing system is thus provided.
- the first stage is used to reduce pressure and is used of the principle of action of a radial plain bearing with the construction of a hydrodynamic lubricating wedge.
- the plain bearing shells can solid industrial ceramics (e.g. based on aluminum oxide or Zirconium oxide base), made of solid hard metals (e.g. based on silicon carbide) or tungsten carbide base) or from coated Metals (e.g. hard chrome plating, tungsten carbide or chromium oxide coating) consist.
- This first sealing stage has the advantage that on the one hand from the liquid of the medium built an effective hydrodynamic lubricating wedge is that, on the other hand, however, any penetrated into the annular gap Particles due to the extreme hardness and wear resistance the plain bearing shells simply grated between them become.
- the feedback of the leakage of the first sealing stage can e.g. B. due to a suitable pressure drop between the outlet and inlet side the machine (with sealing arrangement on the outlet side) or z. B. by external tools such. B. a pump (at the inlet side Arrangement of the seal).
- the second sealing stage provided according to the invention is minimized to protect the environment or mechanical functional elements Leakage at the lowest differential pressures.
- the second Sealing level as a simple sealing system in the form of a lip seal or a single-acting mechanical seal be trained.
- the second Sealing stage also as a multiple circuit of sealing systems more conventional Be designed z. B. as a lip seal downstream mechanical seal or as a V-ring with downstream lip seal and downstream mechanical seal.
- FIG. 1 shows a previously known (see DE 43 16 735 C2) screw pump, the two contactless intermeshing conveying elements, has opposite pairs of conveyor screws, the one right-hand screw 1 and one left-hand screw Include feed screw 2.
- the interlocking conveyor screws form together with the enclosing housing 3 individually closed delivery chambers.
- the torque transmission from the drive to the driven shaft is done by a Gear transmission 4 arranged outside the pump housing 3.
- the pump housing 3 has a suction nozzle 5 and a pressure nozzle 6 on. That flowing to the pump through the suction nozzle 5
- Medium 9 is in the pump housing 3 in two partial flows each central suction chamber 10 supplied to the associated feed screw 1 or 2 is connected upstream.
- This screw downstream is a pressure chamber 11, which is axially outward is completed by a shaft seal 12 each serves to seal an outer bearing 13.
- a liquid short-circuit line 14 connected to the suction chamber 10 in connection stands.
- the pressure side from the pumped liquid-gas mixture separated and dosed back into the suction area Partial liquid volume flow is marked with arrow 15 and is used as a liquid recirculation from the suction chamber 10 promoted in the pressure chamber 11.
- the liquid level in the pump housing 3 or pressure chamber 11 can are usually below the waves 7, 8.
- FIG. 2 shows an embodiment of the invention.
- one stationary housing part 16 rotates within an annular gap 17 is a component which is the shaft 8 of the figure 1 acts.
- the stationary housing part 16 separates a higher one Product pressure interior, which is the Pressure chamber 11 of Figure 1 is a lower one Pressure-bearing outer space 18, in which the shaft 8 in a External bearing 13 is mounted, which is opposite the pressure chamber 11 is sealed by the following sealing system:
- the annular gap 17 is between two extremely hard, wear-resistant Materials existing slide bearing shells 19 formed, to compensate for misalignments in radial Direction with the help of O-rings 20 are mounted elastically.
- For the leakage flowing through the annular gap 17 is that caused by the Slide bearing shells 19 formed the first pressure reduction stage in the axial Directed a feedback device 21, the this leakage from the first sealing stage in the conveying process of the turbomachine, for which purpose a separate pump 23 can be provided.
- a separate pump 23 can be provided.
- the feedback device 21 is seen in the axial direction second sealing stage 22 downstream, as a simple seal z. B. can be formed in the form of a lip seal.
- FIG 3 shows a screw pump according to Figure 1 with a sealing system according to the invention, only indicated schematically according to Figure 2 and an inventive, additionally provided Pressure equalization device 24.
- the latter is in the installation space the outer bearing 13 connecting the suction chamber 10 Line 25 switched and can through a membrane or be formed by a bladder accumulator.
- the pressure compensation device 24 ensures that in the installation space mentioned the same pressure level prevails as in the suction chamber 10. This Arrangement is special with changing pressures in the suction space 10 advantageous, so the pressure differences at the second Minimize seal level 22.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Rotary Pumps (AREA)
- Medicines Containing Plant Substances (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Liquid Crystal Substances (AREA)
- Sealing With Elastic Sealing Lips (AREA)
- Mechanical Sealing (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Prostheses (AREA)
Description
- Figur 1
- als Stand der Technik eine Schraubenspindelpumpe im Längsschnitt;
- Figur 2
- in gegenüber Figur 1 vergrößertem Maßstab ein erfindungsgemäßes Abdichtsystem im - bezogen auf Figur 1 - rechten Lagerbereich einer Förderschraube und
- Figur 3
- Die Schraubenspindelpumpe gemäß Figur 1 mit einer erfindungsgemäßen Druckausgleichseinrichtung.
Claims (10)
- Fluidführende Maschine, insbesondere Pumpe, mit einem in einem stillstehenden Gehäuseteil (16) innerhalb eines Ringspaltes (17) rotierenden Bauteil (8), wobei das stillstehende Gehäuseteil (16) einen höheren Produktdruck aufweisenden Innenraum (11) von einem einen niedrigeren Druck aufweisenden Außenraum (18) trennt, in dem das rotierende Bauteil (8) in einer Außenlagerung (13) gelagert ist, die gegenüber dem Innenraum (11) über ein Dichtungssystem (17, 19, 22) abgedichtet ist, dadurch gekennzeichnet, daß der Ringspalt (17) zwischen zwei aus extrem harten, verschleißfesten Werkstoffen bestehenden Gleitlagerschalen (19) gebildet ist, die nach dem Wirkprinzip eines Radial-Gleitlagers eine erste Druckabbaustufe bilden, der in axialer Richtung eine die Leckage aus dieser ersten Dichtungsstufe in den Förderprozeß der Maschine zurückführende Rückführeinrichtung (21) nachgeschaltet ist, der in axialer Richtung eine zweite Dichtungsstufe (22) nachgeordnet ist, die als einfache Dichtung in Form eines Lippendichtringes und/oder einer einfachen Gleitringdichtung ausgebildet ist.
- Maschine nach Anspruch 1, dadurch gekennzeichnet, daß die Gleitlagerschalen (19) zum Ausgleich von Fluchtungsfehlern in radialer Richtung elastisch gelagert sind.
- Maschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Spaltdicke des zwischen den Gleitlagerschalen (19) gebildeten Ringspaltes (17) etwa 0,3 bis 1,5 % des Gleitflächendurchmessers beträgt.
- Maschine nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß die Länge der Gleitlagerschalen (19) etwa 20 bis 60 % des Gleitflächendurchmessers beträgt.
- Maschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die zweite Dichtungsstufe (22) als Mehrfachschaltung von Dichtungen ausgebildet ist, die einen V-Ring, einen Lippendichtring sowie eine Gleitringdichtung umfaßt.
- Schraubenspindelpumpe mit zumindest einer Förderschraube (1, 2), die von einem Gehäuse (3) umschlossen ist, das zumindest einen Saugstutzen (5) und zumindest einen Druckstutzen (6) aufweist, wobei der Saugstutzen (5) mit einem der Förderschraube (1, 2) vorgeschalteten Saugraum (10) und der Druckstutzen (6) mit einem der Förderschraube (1, 2) nachgeordneten Druckraum (11) in Verbindung stehen, der Einrichtungen zur Separierung der jeweiligen Flüssigkeitsphase von der Gasphase des aus der Förderschraube (1, 2) austretenden Mediumstromes sowie einen unteren Abschnitt zur Aufnahme von zumindest einer Teilmenge der separierten Flüssigkeitsphase aufweist, wobei an diesem unteren Druckraumabschnitt eine Flüssigkeits-Kurzschlußleitung (14) angeschlossen ist, die mit dem Saugraum (10) in Verbindung steht und zusammen mit den Förderelementen einen geschlossenen Umlauf für eine zur permanenten Abdichtung erforderlichen Flüssigkeitsmenge bildet, nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Rückführeinrichtung (21) an die Flüssigkeits-Kurzschlußleitung (14) angeschlossen ist.
- Maschine nach Anspruch 6, dadurch gekennzeichnet, daß zwischen dem Einbauraum der Außenlagerung (13) und dem Saugraum (10) eine das gleiche Druckniveau herstellende Druckausgleichseinrichtung (24) vorgesehen ist.
- Maschine nach Anspruch 7, dadurch gekennzeichnet, daß die Druckausgleichseinrichtung (24) durch eine Membrane gebildet ist.
- Maschine nach Anspruch 7, dadurch gekennzeichnet, daß die Druckausgleichseinrichtung (24) durch einen Blasenspeicher gebildet ist.
- Maschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Rückführeinrichtung (21) eine separate Pumpe (23) aufweist.
Priority Applications (13)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE59806719T DE59806719D1 (de) | 1998-04-11 | 1998-04-11 | Spaltringdichtung |
EP98106690A EP0955466B1 (de) | 1998-04-11 | 1998-04-11 | Spaltringdichtung |
DK98106690T DK0955466T3 (da) | 1998-04-11 | 1998-04-11 | Tætning til ringformet spalte |
ES98106690T ES2187848T3 (es) | 1998-04-11 | 1998-04-11 | Maquina que conduce fluidos. |
AT98106690T ATE230070T1 (de) | 1998-04-11 | 1998-04-11 | Spaltringdichtung |
RU98123617/06A RU2218480C2 (ru) | 1998-04-11 | 1998-12-28 | Машина для перемещения текучих сред (варианты) |
JP00493399A JP4152513B2 (ja) | 1998-04-11 | 1999-01-12 | 液体送り装置 |
NO19990860A NO323251B1 (no) | 1998-04-11 | 1999-02-23 | Spalteringtetning |
CA002262849A CA2262849C (en) | 1998-04-11 | 1999-02-23 | Improved sealing system for rotating component of a pump |
KR10-1999-0008053A KR100527525B1 (ko) | 1998-04-11 | 1999-03-11 | 환상 틈새형 밀봉 구조를 갖는 스크류 펌프 |
US09/272,167 US6129533A (en) | 1998-04-11 | 1999-03-18 | Sealing system for rotating component of a pump |
CN99105562A CN1131377C (zh) | 1998-04-11 | 1999-04-12 | 缝隙环密封 |
BR9902040-8A BR9902040A (pt) | 1998-04-11 | 1999-04-12 | Máquina condutora de fluido. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98106690A EP0955466B1 (de) | 1998-04-11 | 1998-04-11 | Spaltringdichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0955466A1 EP0955466A1 (de) | 1999-11-10 |
EP0955466B1 true EP0955466B1 (de) | 2002-12-18 |
Family
ID=8231756
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98106690A Expired - Lifetime EP0955466B1 (de) | 1998-04-11 | 1998-04-11 | Spaltringdichtung |
Country Status (13)
Country | Link |
---|---|
US (1) | US6129533A (de) |
EP (1) | EP0955466B1 (de) |
JP (1) | JP4152513B2 (de) |
KR (1) | KR100527525B1 (de) |
CN (1) | CN1131377C (de) |
AT (1) | ATE230070T1 (de) |
BR (1) | BR9902040A (de) |
CA (1) | CA2262849C (de) |
DE (1) | DE59806719D1 (de) |
DK (1) | DK0955466T3 (de) |
ES (1) | ES2187848T3 (de) |
NO (1) | NO323251B1 (de) |
RU (1) | RU2218480C2 (de) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002033262A1 (en) | 2000-10-18 | 2002-04-25 | Leybold Vakuum Gmbh | Multi-stage helical screw rotor |
GB2371838B (en) * | 2001-02-02 | 2004-07-21 | Federal Mogul Rpb Ltd | Thrust Bearing Arrangement |
US20080169157A1 (en) * | 2002-12-02 | 2008-07-17 | Wyker Christopher A | Lip seal lubrication reservoir and method of level control |
CN1536801B (zh) * | 2003-04-07 | 2010-04-28 | 华为技术有限公司 | 一种网络侧以及用户侧的媒质接入控制层处理单元 |
ZA200507096B (en) | 2004-09-07 | 2006-06-28 | Crane John Inc | Sealing system for slurry pump |
WO2007000815A1 (ja) * | 2005-06-29 | 2007-01-04 | Mayekawa Mfg. Co., Ltd | 二段スクリュー圧縮機の給油方法、装置及び冷凍装置の運転方法 |
US20080003099A1 (en) * | 2006-06-30 | 2008-01-03 | Honeywell International, Inc. | Closed bias air film riding seal in event of housing breach for shared engine lubrication accessory gearboxes |
DE202007004292U1 (de) * | 2007-03-23 | 2008-07-31 | Ghh-Rand Schraubenkompressoren Gmbh | Dichtung für Wellenabdichtungen |
US8342156B2 (en) * | 2009-08-27 | 2013-01-01 | O'shea Fergal Michael | Bearing arrangement for a pump |
US20120306156A1 (en) * | 2011-06-01 | 2012-12-06 | Alma Products Company | Compressor seal |
DE102012001700B4 (de) * | 2012-01-31 | 2013-09-12 | Jung & Co. Gerätebau GmbH | Zweispindelige Schraubenspindelpumpe in einflutiger Bauweise |
USD749138S1 (en) | 2014-12-19 | 2016-02-09 | Q-Pumps S.A. de C.V. | Twin screw pump |
CN106481558B (zh) * | 2015-08-27 | 2018-11-16 | 上海伊莱茨真空技术有限公司 | 一种用于罗茨真空泵的三唇封油密封系统 |
DE202017107379U1 (de) | 2017-12-04 | 2017-12-18 | SKF Lubrication System Germany GmbH | Schmierfettpumpe |
DE102017221847A1 (de) | 2017-12-04 | 2019-06-06 | Skf Lubrication Systems Germany Gmbh | Schmierfettpumpe und Verfahren zur Verwertung von Leckagefett einer Schmierfettpumpe |
DE102020124392A1 (de) * | 2020-09-18 | 2022-03-24 | Itt Bornemann Gmbh | Abstandseinstellung für doppelschneckenpumpen |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1673259A (en) * | 1926-03-11 | 1928-06-12 | Stacold Corp | Pump |
US2549633A (en) * | 1945-12-22 | 1951-04-17 | Metals & Controls Corp | Gas burner ignition and safety control system |
US2758548A (en) * | 1950-08-24 | 1956-08-14 | Edward A Rockwell | Rotary fluid displacement device and mechanism therefor |
US2710581A (en) * | 1951-10-26 | 1955-06-14 | New York Air Brake Co | Rotary pump |
US3527507A (en) * | 1968-02-12 | 1970-09-08 | Garlock Inc | Unitary bearing element with improved,integral scraper-sealing lip |
US3575426A (en) * | 1968-06-24 | 1971-04-20 | Caterpillar Tractor Co | Pressurized sealing arrangement |
NL162721C (nl) * | 1969-02-12 | 1980-06-16 | Cerpelli Orazio | Schroefpomp. |
US3589843A (en) * | 1969-02-14 | 1971-06-29 | Warren Pumps Inc | Rotary pump with intermeshing helical ribs |
GB1317435A (en) * | 1969-06-05 | 1973-05-16 | Turnbull Marine Design | Ship propeller shaft stern bearing arrangements |
GB1570512A (en) * | 1976-09-04 | 1980-07-02 | Howden Compressors Ltd | Meshing-screw gas-compressing apparatus |
JPS5951190A (ja) * | 1982-09-17 | 1984-03-24 | Hitachi Ltd | オイルフリ−スクリユ−圧縮機の油切り装置 |
DE3312868C2 (de) * | 1983-04-09 | 1986-03-20 | Glyco-Antriebstechnik Gmbh, 6200 Wiesbaden | Hydropumpe |
GB2165890B (en) * | 1984-10-24 | 1988-08-17 | Stothert & Pitt Plc | Improvements in pumps |
GB2182393A (en) * | 1985-11-04 | 1987-05-13 | Ngk Insulators Ltd | Intermeshing screw pump |
JPS631772A (ja) * | 1986-06-20 | 1988-01-06 | Kobe Steel Ltd | 真空ポンプとその運転方法 |
JP2515831B2 (ja) * | 1987-12-18 | 1996-07-10 | 株式会社日立製作所 | スクリユ―真空ポンプ |
JPH03110138A (ja) * | 1989-09-25 | 1991-05-10 | Kobe Steel Ltd | タイヤユニフォミティマシンにおけるリムチエンジャ装置 |
DE4316735C2 (de) * | 1993-05-19 | 1996-01-18 | Bornemann J H Gmbh & Co | Pumpverfahren zum Betreiben einer Multiphasen-Schraubenspindelpumpe und Pumpe |
JP3344825B2 (ja) * | 1994-05-24 | 2002-11-18 | 栃木富士産業株式会社 | スクリュー式過給機のシール装置 |
-
1998
- 1998-04-11 ES ES98106690T patent/ES2187848T3/es not_active Expired - Lifetime
- 1998-04-11 AT AT98106690T patent/ATE230070T1/de active
- 1998-04-11 DK DK98106690T patent/DK0955466T3/da active
- 1998-04-11 DE DE59806719T patent/DE59806719D1/de not_active Expired - Lifetime
- 1998-04-11 EP EP98106690A patent/EP0955466B1/de not_active Expired - Lifetime
- 1998-12-28 RU RU98123617/06A patent/RU2218480C2/ru not_active IP Right Cessation
-
1999
- 1999-01-12 JP JP00493399A patent/JP4152513B2/ja not_active Expired - Fee Related
- 1999-02-23 NO NO19990860A patent/NO323251B1/no not_active IP Right Cessation
- 1999-02-23 CA CA002262849A patent/CA2262849C/en not_active Expired - Fee Related
- 1999-03-11 KR KR10-1999-0008053A patent/KR100527525B1/ko not_active IP Right Cessation
- 1999-03-18 US US09/272,167 patent/US6129533A/en not_active Expired - Fee Related
- 1999-04-12 CN CN99105562A patent/CN1131377C/zh not_active Expired - Fee Related
- 1999-04-12 BR BR9902040-8A patent/BR9902040A/pt not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CA2262849C (en) | 2004-11-30 |
KR19990082721A (ko) | 1999-11-25 |
ES2187848T3 (es) | 2003-06-16 |
CN1232142A (zh) | 1999-10-20 |
BR9902040A (pt) | 2000-02-22 |
DK0955466T3 (da) | 2003-03-03 |
JP4152513B2 (ja) | 2008-09-17 |
CA2262849A1 (en) | 1999-10-11 |
NO990860D0 (no) | 1999-02-23 |
NO323251B1 (no) | 2007-02-12 |
NO990860L (no) | 1999-10-12 |
CN1131377C (zh) | 2003-12-17 |
US6129533A (en) | 2000-10-10 |
JPH11303772A (ja) | 1999-11-02 |
DE59806719D1 (de) | 2003-01-30 |
RU2218480C2 (ru) | 2003-12-10 |
KR100527525B1 (ko) | 2005-11-09 |
EP0955466A1 (de) | 1999-11-10 |
ATE230070T1 (de) | 2003-01-15 |
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