EP0486463B2 - Casting mold for cylinder block of a V-type internal combustion engine - Google Patents
Casting mold for cylinder block of a V-type internal combustion engine Download PDFInfo
- Publication number
- EP0486463B2 EP0486463B2 EP91890272A EP91890272A EP0486463B2 EP 0486463 B2 EP0486463 B2 EP 0486463B2 EP 91890272 A EP91890272 A EP 91890272A EP 91890272 A EP91890272 A EP 91890272A EP 0486463 B2 EP0486463 B2 EP 0486463B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- cylinder
- cores
- casting mold
- core
- cylinder bore
- 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
- 238000005266 casting Methods 0.000 title claims description 11
- 238000002485 combustion reaction Methods 0.000 title claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000000465 moulding Methods 0.000 claims 1
- 239000003921 oil Substances 0.000 description 13
- 241000237858 Gastropoda Species 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C13/00—Moulding machines for making moulds or cores of particular shapes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
- B22C9/103—Multipart cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
Definitions
- the invention relates to a mold for the Cylinder block of an internal combustion engine with two in V-shaped rows of cylinders with cores for Shaping the crank chamber and the cylinder bores, see for example DE-C-35 43 194.
- Known molds for the cylinder block V-engines consist of a bottom box shape and an upper box shape, which essentially define the outer contour, and a variety of Cores, the crankcase, the cylinder bores as well as the water and oil spaces.
- the cores are in these known molds for each crankcase section separately executed. This means that for every two Cylinder a crankcase core, two cylinder bore cores as well as various water jacket and oil chamber cores are to be provided. Because of this large number The effort involved in core assembly becomes a matter of cores increased, making this particular by anchoring the individual cores through Core supports, core nails is difficult. Furthermore are the casting tolerances by adding the individual games between the cores increased so that the required wall thicknesses larger than required must be chosen in order to worst case, the required minimum wall thickness not to fall below.
- AT-PS 387 164 is a casting mold for Series internal combustion engines known to the above avoids disadvantages. Doing so proposed, because basic core with the water jacket cores train in one piece.
- the object of the present invention is to create a mold that has these disadvantages do not occur and the simple one enables very precise manufacture of the cylinder block, through minimal casting tolerances minimal wall thicknesses can also be achieved.
- a single base core on which a single unitary cylinder bore core group is attachable.
- the cylinder bore core group from a plurality of cylinder bore cores consists of webs on Foot of the cylinders are interconnected.
- they appear in the main warehouse walls at least two additional recesses that be caused by the webs and it will at the same time achieved that the clearances of the honing tool or the crankshaft counterweights are guaranteed in any case.
- will through the webs a solid connection of the individual Cylinder bore cores reached.
- the parts of the Cylinder bore core group for the two rows of cylinders are over in the middle plane of the engine Oil guide channel cores connected to each other.
- the invention provides that on the cylinder bore core groups Extensions are arranged, which are essentially parallel to the cylinder axes run and form oil return channels that in stiffening ribs are arranged, the slugs for the cylinder head bolts with the main bearings connect.
- the design-related openings in the main bearing walls reduced rigidity of the cylinder block compensated.
- the special box shape of the stiffening ribs achieved a favorable force introduction, which is too low Deformation of the cylinder block during operation the internal combustion engine leads. At the same time the oil circulation is improved.
- a particularly simple core arrangement is achieved in that a single for each row of cylinders Water jacket core is provided.
- the mold according to the invention has the following Cores: the base core 1, the cylinder bore core group 2, the left water jacket core 3, the right water jacket core 4 and the well-known So executed and not shown V-core for the end in the cylinder head area.
- the cores to be provided on a case-by-case basis namely the front and rear core to the both axial ends of the motor, is in the embodiment only the core 5 for the suction side the water pump.
- the cores in the figures provided several times with the same reference numerals, although they are only one piece represent trained part.
- the cylinder bore core group 2 consists of individual cylinder bore cores 2a, each for a row of cylinders with each other via webs 2b are connected. These webs 2b are supported in a corresponding recess on the base core 1 from.
- the cylinder core group also has 2 oil return cores 2c, which are also on Support base core 1.
- On the outside of the rows of cylinders and parallel to the axes of the cylinders the cylinder bore core group has 2 extensions 2d that the oil return channels within Stiffening ribs that form the slugs for the cylinder head bolts with the main bearings connect.
- the core 2e for the main oil drilling connects the cylinder bore cores via oil channel cores 2f 2a for the left and for the right Row of cylinders. It is again pointed out that the entire cylinder bore core group 2 is formed in one piece.
- a separate water jacket core is known 5 for the suction side of the water pump intended.
- the flange 10 can be seen for the oil pan, furthermore the main bearing 11 with the bores 12 for the main bearing bolts. So are the cylinders 13 and oil spaces 14 can be seen. Essential are the oil return openings 15 and 16 laterally Main bearing, which the cores 2c and 2d Correspond to cylinder bore core group 2.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Description
Die Erfindung betrifft eine Gußform für den Zylinderblock einer Brennkraftmaschine mit zwei in VForm angeordneten Zylinderreihen mit Kernen zur Formung des Kurbelraumes und der Zylinderbohrungen, siehe beispielsweise DE-C-35 43 194.The invention relates to a mold for the Cylinder block of an internal combustion engine with two in V-shaped rows of cylinders with cores for Shaping the crank chamber and the cylinder bores, see for example DE-C-35 43 194.
Bekannte Gießformen für den Zylinderblock von V-Motoren bestehen aus einer Unterkastenform und einer Oberkastenform, welche im wesentlichen die Außenkontur festlegen, und einer Vielzahl von Kernen, die das Kurbelgehäuse, die Zylinderbohrungen sowie die Wasser- und Ölräume formen. Die Kerne sind bei diesen bekannten Gießformen für jeden einzelnen Kurbelraumabschnitt getrennt ausgeführt. Dies bedeutet, daß für jeweils zwei Zylinder ein Kurbelraumkern, zwei Zylinderbohrungskerne sowie diverse Wassermantel- und Ölraumkerne vorzusehen sind. Durch diese große Anzahl von Kernen wird der Aufwand bei der Kernmontage erhöht, wodurch diese insbesondere durch die Verankerung der einzelnen Kerne durch Kernstützen, Kernnägel erschwert wird. Außerdem werden die Gußtoleranzen durch die Addition der einzelnen Spiele zwischen den Kernen erhöht, sodaß die erforderlichen Wandstärken größer als erforderlich gewählt werden müssen, um auch im ungünstigsten Fall die erforderliche Mindestwandstärke nicht zu unterschreiten.Known molds for the cylinder block V-engines consist of a bottom box shape and an upper box shape, which essentially define the outer contour, and a variety of Cores, the crankcase, the cylinder bores as well as the water and oil spaces. The cores are in these known molds for each crankcase section separately executed. This means that for every two Cylinder a crankcase core, two cylinder bore cores as well as various water jacket and oil chamber cores are to be provided. Because of this large number The effort involved in core assembly becomes a matter of cores increased, making this particular by anchoring the individual cores through Core supports, core nails is difficult. Furthermore are the casting tolerances by adding the individual games between the cores increased so that the required wall thicknesses larger than required must be chosen in order to worst case, the required minimum wall thickness not to fall below.
Ein weiteres Problem bei den bekannten Gießformen besteht darin, daß die Hauptlagerwände einerseits den Freigang der Kurbelwellengegengewichte gewährleisten müssen, andererseits aber auch den Freilauf des Honwerkzeuges sicherstellen müssen. Um die aus gußtechnischen Gründen erforderliche minimale Wandstärke nicht zu unterschreiten, sind hier, speziell bei langhubigen Motoren, schwierige konstruktive Probleme zu lösen.Another problem with the known molds consists of the main bearing walls on the one hand, the clearance of the crankshaft counterweights must guarantee, on the other hand also ensure that the honing tool is free-running have to. To the necessary for casting reasons not to fall below the minimum wall thickness, are here, especially for long-stroke engines, to solve difficult constructive problems.
Aus der AT-PS 387 164 ist eine Gießform für Reihenbrennkraftmaschinen bekannt, die die oben beschriebenenn Nachteile vermeidet. Dabei wird vorgeschlagen, denn Basiskern mit den Wassermantelkernen einstückig auszubilden.AT-PS 387 164 is a casting mold for Series internal combustion engines known to the above avoids disadvantages. Doing so proposed, because basic core with the water jacket cores train in one piece.
Ein solches Konzept ist aber für V-Motoren nicht praktisch anwendbar, da ein solcher Kern durch die teilweise Überdeckung der Zylinderbohrung mit der Hauptlagerwand nicht herstellbar ist.However, such a concept is for V engines not practical because of such a core due to the partial overlap of the cylinder bore cannot be produced with the main bearing wall.
Aufgabe der vorliegenden Erfindung ist es, eine Gießform zu schaffen, bei der diese Nachteile nicht auftreten und die auf einfache Weise eine sehr genaue Herstellung des Zylinderblockes ermöglicht, sodaß durch minimale Gußtoleranzen auch minimale Wandstärken erzielbar sind.The object of the present invention is to create a mold that has these disadvantages do not occur and the simple one enables very precise manufacture of the cylinder block, through minimal casting tolerances minimal wall thicknesses can also be achieved.
Erfindungsgemäß ist ein einziger Basiskern vorgesehen, auf dem eine einzige einstückig ausgeführte Zylinderbohrungskerngruppe aufsetzbar ist.According to the invention provided a single base core on which a single unitary cylinder bore core group is attachable.
Bei der Ausführung mit einem Basiskern und einer einzigen Zylinderbohrungskerngruppe ist der Guß genauer und die Kernmontage einfacher.When running with a base core and a single cylinder bore core group the casting is more precise and the core assembly easier.
Wesentlich dabei ist, daß die Kurbelräume und Zylinderbohrungen des gesamten Motors mit nur zwei Kernen hergestellt werden. Insgesamt sind für einen typischen Motor nur sieben bzw. acht Kerne erforderlich, nämlich:
- Der Basiskern,
- eine Zylinderbohrungskerngruppe,
- je ein Wassermantelkern für jede Zylinderreihe,
- ein V-Kern für den Abschluß im Zylinderkopfbereich, sowie gegebenenfalls
- ein vorderer und ein hinterer Kern.
- The basic core,
- a cylinder bore core group,
- one water jacket core for each row of cylinders,
- a V-core for the end in the cylinder head area, and if necessary
- a front and a back core.
Auf diese Weise werden minimale Toleranzen gewährleistet, sodaß ein genauer Guß und damit eine sehr leichte Bauweise des Zylinderblocks erreicht wird.This way there are minimal tolerances guaranteed so that an accurate casting and thus achieved a very light construction of the cylinder block becomes.
Besonders vorteilhaft ist es, wenn die Zylinderbohrungskerngruppe aus einer Mehrzahl von Zylinderbohrungskernen besteht, die über Stege am Fuß der Zylinder miteinander verbunden sind. Auf diese Weise entstehen in den Hauptlagerwänden mindestens zwei zusätzliche Ausnehmungen, die durch die Stege hervorgerufen werden und es wird gleichzeitig erreicht, daß die Freigänge des Honwerkzeuges bzw. der Kurbelwellengegengewichte in jedem Fall gewährleistet sind. Außerdem wird durch die Stege eine solide Verbindung der einzelnen Zylinderbohrungskerne erreicht. Die Teile der Zylinderbohrungskerngruppe für die beiden Zylinderreihen sind in der Mittelebene des Motors über Ölführungskanalkerne miteinander verbunden.It is particularly advantageous if the cylinder bore core group from a plurality of cylinder bore cores consists of webs on Foot of the cylinders are interconnected. On this is how they appear in the main warehouse walls at least two additional recesses that be caused by the webs and it will at the same time achieved that the clearances of the honing tool or the crankshaft counterweights are guaranteed in any case. Besides, will through the webs a solid connection of the individual Cylinder bore cores reached. The parts of the Cylinder bore core group for the two rows of cylinders are over in the middle plane of the engine Oil guide channel cores connected to each other.
In einer besonders bevorzugten Weiterbildung der Erfindung ist vorgesehen, daß an den Zylinderbohrungskerngruppen Fortsätze angeordnet sind, die im wesentlichen parallel zu den Zylinderachsen verlaufen und Ölrücklaufkanäle formen, die in Versteifungsrippen angeordnet sind, die die Butzen für die Zylinderkopfschrauben mit den Hauptlagern verbinden. Auf diese Weise wird die durch die konstruktiv bedingten Durchbrechungen der Hauptlagerwände verminderte Steifheit des Zylinderblocks kompensiert. Im Gegenteil wird sogar durch die besondere Kastenform der Versteifungsrippen eine günstige Krafteinleitung erreicht, was zu geringen Deformationen des Zylinderblocks beim Betrieb der Brennkraftmaschine führt. Gleichzeitig wird der Ölumlauf verbessert.In a particularly preferred further training the invention provides that on the cylinder bore core groups Extensions are arranged, which are essentially parallel to the cylinder axes run and form oil return channels that in stiffening ribs are arranged, the slugs for the cylinder head bolts with the main bearings connect. In this way, the design-related openings in the main bearing walls reduced rigidity of the cylinder block compensated. On the contrary, even through the special box shape of the stiffening ribs achieved a favorable force introduction, which is too low Deformation of the cylinder block during operation the internal combustion engine leads. At the same time the oil circulation is improved.
Eine besonders einfache Kernanordnung wird dadurch erzielt, daß für jede Zylinderreihe ein einziger Wassermantelkern vorgesehen ist.A particularly simple core arrangement is achieved in that a single for each row of cylinders Water jacket core is provided.
Im folgenden wird die Erfindung anhand der in den Zeichnungen dargestellten Ausführungsbeispiele näher erläutert. Es zeigen:
- Fig. 1
- die Kerne der erfindungsgemäßen Gußform in gesprungenem Schnitt durch die Mitte Zylinder und durch die Mitte Hauptlager nach Linie I-I in Fig. 2,
- Fig. 2
- einen horizontalen Schnitt durch die Mitte der Hauptölbohrung nach der Linie II-II in Fig. 1,
- Fig. 3
- einen Schnitt nach Linie III-III in Fig. 1,
- Fig. 4
- einen Längsschnittt durch die Mitte der Hauptölbohrung nach Linie IV-IV in Fig. 1,
- Fig. 5
- eine Ansicht eines mit der erfindungsgemäßen Gußform hergestellten Zylinderblocks von unten
- Fig. 1
- the cores of the mold according to the invention in a cracked section through the center cylinder and through the center of the main bearing according to line II in Fig. 2,
- Fig. 2
- a horizontal section through the center of the main oil bore along the line II-II in Fig. 1,
- Fig. 3
- 2 shows a section along line III-III in FIG. 1,
- Fig. 4
- a longitudinal section through the center of the main oil bore along line IV-IV in Fig. 1,
- Fig. 5
- a view of a cylinder block produced with the mold according to the invention from below
Die erfindungsgemäße Gußform besitzt folgende
Kerne: den Basiskern 1, die Zylinderbohrungskerngruppe
2, den linken Wassermantelkern 3, den
rechten Wassermantelkern 4 sowie den in bekannter
Weise ausgeführten und nicht näher dargestellten
V-Kern für den Abschluß im Zylinderkopfbereich.
Von den fallweise vorzusehenden Kernen,
nämlich dem Vorderen und hinteren Kern an den
beiden axialen Enden des motors, ist in dem Ausführungsbeispiel
nur der Kern 5 für die Saugseite
der Wasserpumpe vorgesehen. Um das Verständnis
zu erleichtern, sind in den Fig. einzelne Kerne
mehrfach mit den gleichen Bezugszeichen versehen,
obgleich sie nur einen einzigen einstückig
ausgebildeten Teil darstellen.The mold according to the invention has the following
Cores: the base core 1, the cylinder bore
Die Zylinderbohrungskerngruppe 2 besteht aus
einzelnen Zylinderbohrungskernen 2a, die für jeweils
eine Zylinderreihe über Stege 2b miteinander
verbunden sind. Diese Stege 2b stützen sich in
einer entsprechenden Ausnehmung am Basiskern 1
ab. Weiters besitzt die Zylinderbohrungskerngruppe
2 Ölrücklaufkerne 2c, die sich ebenfalls am
Basiskern 1 abstützen. An der Außenseite der Zylinderreihen
und parallel zu den Achsen der Zylinder
besitzt die Zylinderbohrungskerngruppe 2 Fortsätze
2d, die die Ölrücklaufkanäle innerhalb von
Versteifungsrippen formen, welche die Butzen für
die Zylinderkopfschrauben mit den Hauptlagern
verbinden. Der Kern 2e für die Hauptölbohrung
verbindet über Ölkanalkerne 2f die Zylinderbohrungskerne
2a für die linke und für die rechte
Zylinderreihe. Es wird nochmals darauf hingewiesen,
daß die gesamte Zylinderbohrungskerngruppe
2 einstückig geformt ist. The cylinder bore
In bekannter Weise ist ein separater Wassermantelkern 5 für die Saugseite der Wasserpumpe vorgesehen.A separate water jacket core is known 5 for the suction side of the water pump intended.
In der Darstellung des Zylinderblock in Fig. 5
ist der Flansch 10 für die Ölwanne zu erkennen,
weiters die Hauptlager 11 mit den Bohrungen 12
für die Hauptlagerschrauben. Ebenso sind die Zylinder
13 sowie Ölräume 14 erkennbar. Wesentlich
sind die Ölrücklauföffnungen 15 und 16 seitlich der
Hauptlager, welche den Kernen 2c bzw. 2d der
Zylinderbohrungskerngruppe 2 entsprechen.In the representation of the cylinder block in FIG. 5
the
Claims (4)
- Casting mold for the cylinder block of an internal combustion engine with two cylinder banks in V-type arrangement, with cores (1, 2) for the molding of the crankcase and the cylinder bores, wherein a single base core (1) is provided, on which is placed one single group of cylinder bore cores (2) configured in one piece.
- Casting mold according to claim 1, wherein the groups of cylinder bore cores (2) comprises a number of cylinder bore cores (2a) linked with one another by webs (2b) at the bottom of the cylinders.
- Casting mold according to any of claims 1 to 2, wherein the groups of cylinder bore cores (2) are provided with projections (2d) running essentially parallel to the cylinder axes and forming passages for the return flow of the oil, which are located in stiffening ribs connecting the pockets for the cylinder head studs with the main bearings.
- Casting mold according to any of claims 1 to 2, wherein a single water jacket core (3, 4) is provided for each cylinder bank.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT2325/90 | 1990-11-16 | ||
| AT232590 | 1990-11-16 |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| EP0486463A2 EP0486463A2 (en) | 1992-05-20 |
| EP0486463A3 EP0486463A3 (en) | 1993-03-24 |
| EP0486463B1 EP0486463B1 (en) | 1995-08-02 |
| EP0486463B2 true EP0486463B2 (en) | 1998-08-05 |
Family
ID=3532266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91890272A Expired - Lifetime EP0486463B2 (en) | 1990-11-16 | 1991-11-11 | Casting mold for cylinder block of a V-type internal combustion engine |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0486463B2 (en) |
| KR (1) | KR950014483B1 (en) |
| DE (1) | DE59106144D1 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4324609C2 (en) * | 1993-07-22 | 1997-10-16 | Avl Verbrennungskraft Messtech | Crankcase for internal combustion engines |
| DE4326157C1 (en) * | 1993-08-04 | 1994-05-05 | Daimler Benz Ag | Mould for a V-form piston engine cylinder crankcase - with cores for water entry and oil cooler spaces joined to the cylinder space cores by means of connector cores |
| FR2751251B1 (en) * | 1996-07-19 | 1998-08-21 | Renault | PROCESS AND CORE FOR MOLDING A CYLINDER HEAD OF AN INTERNAL COMBUSTION ENGINE |
| US5752564A (en) * | 1997-01-08 | 1998-05-19 | Amsted Industries Incorporated | Railway truck castings and method and cores for making castings |
| DE10019310C1 (en) * | 2000-04-19 | 2001-10-25 | Vaw Mandl & Berger Gmbh Linz | Casting mold, comprising outer molded parts and molded material cores inserted therein |
| US6458462B1 (en) | 2000-12-13 | 2002-10-01 | 3M Innovative Properties Company | Sporting goods having a ceramer coating |
| FR2841163B1 (en) * | 2002-06-21 | 2005-01-28 | Montupet Sa | METHOD FOR MOLDING FOUNDRY PARTS, IN PARTICULAR BLOCK-MOTORS, IN LIGHT ALLOY |
| FR2878457B1 (en) * | 2004-11-29 | 2008-05-30 | Renault Sas | METHOD FOR PRODUCING AN OIL RAMP IN A CYLINDER CASTER OF AN INTERNAL COMBUSTION ENGINE FOR A MOTOR VEHICLE, MOLDING CORE FOR IMPLEMENTING SUCH A METHOD, CYLINDER HOUSING AND MOTOR THUS OBTAINED |
| US7814879B2 (en) | 2008-04-23 | 2010-10-19 | Techtronic Outdoor Products Technology Limited | Monolithic block and valve train for a four-stroke engine |
| US8533946B2 (en) * | 2011-12-14 | 2013-09-17 | GM Global Technology Operations LLC | Method of manufacturing a crankshaft |
| US9403209B2 (en) | 2013-01-22 | 2016-08-02 | GM Global Technology Operations LLC | Methods for sand core gas evacuation and related systems and apparatus |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3264693A (en) * | 1963-12-18 | 1966-08-09 | Gen Motors Corp | Molding assembly for internal combustion engine blocks |
| DE3543194C1 (en) * | 1985-12-06 | 1986-11-20 | Mtu Motoren- Und Turbinen-Union Friedrichshafen Gmbh, 7990 Friedrichshafen | Apparatus for the casting of cylinder block and crankcase units |
| AT387164B (en) * | 1987-02-25 | 1988-12-12 | Avl Verbrennungskraft Messtech | MOLDING FOR A CRANKCASE |
-
1991
- 1991-11-11 EP EP91890272A patent/EP0486463B2/en not_active Expired - Lifetime
- 1991-11-11 DE DE59106144T patent/DE59106144D1/en not_active Expired - Lifetime
- 1991-11-15 KR KR1019910020374A patent/KR950014483B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR950014483B1 (en) | 1995-12-02 |
| KR920009478A (en) | 1992-06-25 |
| DE59106144D1 (en) | 1995-09-07 |
| EP0486463B1 (en) | 1995-08-02 |
| EP0486463A2 (en) | 1992-05-20 |
| EP0486463A3 (en) | 1993-03-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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