EP0679460B1 - Regulierbare elektromagnetische Stranggiesskokille - Google Patents

Regulierbare elektromagnetische Stranggiesskokille Download PDF

Info

Publication number
EP0679460B1
EP0679460B1 EP95810201A EP95810201A EP0679460B1 EP 0679460 B1 EP0679460 B1 EP 0679460B1 EP 95810201 A EP95810201 A EP 95810201A EP 95810201 A EP95810201 A EP 95810201A EP 0679460 B1 EP0679460 B1 EP 0679460B1
Authority
EP
European Patent Office
Prior art keywords
mould
continuous casting
walls
mold
end wall
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
Application number
EP95810201A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0679460A1 (de
Inventor
Bertrand Carrupt
Georges Berclaz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3A Composites International AG
Original Assignee
Alusuisse Lonza Services Ltd
Alusuisse Technology and Management Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Alusuisse Lonza Services Ltd, Alusuisse Technology and Management Ltd filed Critical Alusuisse Lonza Services Ltd
Publication of EP0679460A1 publication Critical patent/EP0679460A1/de
Application granted granted Critical
Publication of EP0679460B1 publication Critical patent/EP0679460B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/05—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds into moulds having adjustable walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/01—Continuous casting of metals, i.e. casting in indefinite lengths without moulds, e.g. on molten surfaces
    • B22D11/015—Continuous casting of metals, i.e. casting in indefinite lengths without moulds, e.g. on molten surfaces using magnetic field for conformation, i.e. the metal is not in contact with a mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/16—Controlling or regulating processes or operations

Definitions

  • the invention relates to an adjustable electromagnetic continuous casting mold for production of continuous cast ingots of different dimensions, in which an electromagnetic Inductor determines the cross-sectional dimensions of the molten metal strand and the mold has a lowerable bottom and a mold frame with a pair of opposing ones stationary side walls and a pair of opposite, in their Includes adjustable end walls, with the side and end walls together form the mold opening, and the walls each consist of an inductor part with an induction loop and a shield.
  • the invention further relates to a method for Implementation of the continuous casting process with the electromagnetic regulator that can be regulated according to the invention Mold.
  • Continuous casting molds are used to pour liquid metal from a ladle or the like in a mold, producing workpieces with a full or hollow cross-section to let.
  • Conventional casting devices for the continuous casting of metals for Manufacture of bars or bolts as primary material for their further processing for example, extrusion presses or rollers consist of a water-cooled mold, i.e. a mold usually open at the top, with parallel walls and initially tightly closing, but lowerable bottom, the mold walls usually are hollow and are cooled with water. If the metal melt in the When the mold is poured in, this melt solidifies rapidly on the walls and bottom of the mold, so that a bowl, the contents of which are still liquid, forms.
  • the mold bottom is then lowered and at the same time there is always so much molten metal refilled into the mold that the level of the melt in the mold remains constant. In this way, the strand or ingot grows down, taking this sprayed on all sides with a coolant, such as usually water, and thus checked is cooled.
  • a coolant such as usually water
  • the grain structure of the solidified metal melt depends, among other things. on the cooling rate , so that during continuous casting, depending on the type of cooling process, in the edge zone and in the core of the ingot sets a different grain structure, whereby for the production of extruded and rolled products fine-grained alloys are advantageous.
  • the conventional Continuous casting of aluminum bars with conventional molds for example usually a 2 to 5 mm wide coarse-grained edge zone is formed.
  • EMC molds electromagnetic continuous casting molds
  • a conductor loop to which a constant high-frequency AC voltage is applied, which produces a corresponding electrical conductor current.
  • This conductor current generates a magnetic field with a magnetic field strength, the vertical component H y , ie the component in the direction of the mold axis, in the metal melt which passes through the cavity of the inductor during the casting process induces an eddy current which flows in the opposite direction to the conductor current in the inductor.
  • the principle of the continuous electromagnetic casting mold is based on the fact that a strong one current flowing through the conductor loop of the inductor generates a strong magnetic field, which in turn causes eddy currents in the melt, so that through the interaction the melt is held together between the magnetic field and eddy currents becomes.
  • molten metal is included predetermined speed to within a loop-shaped electrical Cast-in approach floor.
  • the approach floor is at one of the pouring rates adjusted speed reduced.
  • High-frequency alternating current generated in the inductor an electromagnetic force field, which the introduced molten metal within of the inductor horizontally limited in a shape that is essentially by the inner contours the inductor loop is determined.
  • the structure of a conventional continuous casting mold is fundamentally different that of an electromagnetic continuous casting mold.
  • the mold in conventional Fall serves to dissipate the heat of fusion by contact with the melt. In the further it forms the vessel wall for the melt and must therefore be used in its entirety be tight.
  • the electromagnetic mold does not come into contact with the melt. It is used to conduct electricity in a defined manner and usually contains Devices for additional influencing of the magnetic field.
  • EMC molds differentiate different from the conventional ones so that no transmission options of the individual features of one mold structure assure on the other.
  • the solution proposed in DE-OS 28 48 808 makes use of the consideration that the shape and dimension of the melt during continuous casting in the alternating electromagnetic field - in addition to the shape of the outline of the inductor used - essentially from the vertical component H y of the in depends on the melt prevailing magnetic field strength, which according to DE-OS 28 48 808 can be brought about by locally lowering the current density in the inductor, ie preferably in the middle of its side faces.
  • EP 0 109 357 describes an electromagnetic continuous casting mold with a changeable Cast section describes which special locking elements for the optional positioning and attachment of the end walls to the side walls.
  • One on the end walls arranged special clamping device connects the respective inductor loops and shielding the individual walls from each other, so that inside the mold closed loops are created.
  • This clamping device has a camshaft when rotating, pistons connect special contact elements.
  • This clamping device must be used for each of the two-sided connections between the side and Front wall can be set separately. The contact pressure for the contact elements depends solely on the rotation of the camshaft.
  • EP 0 156 764 describes an electromagnetic continuous casting mold in which an end wall slidably attached to the side walls via releasable locking bolts is, while the respective inductor loops and shields via a clamping device are connected to closed loops with pistons located in cylinder chambers.
  • the cylinder rooms are in a pressure chamber via branch lines or channels Connection, wherein the pressure chamber is filled with a pressure medium which by a Main piston is pressurizable.
  • the inventor set himself the goal of using an electromagnetic continuous casting mold create, which avoids the disadvantages described above and a change in resulting casting cross-section without a prior to the continuous casting process allows manual positioning of the front or side walls.
  • the object of the present invention is therefore to create an electromagnetic continuous casting mold, involved in the manufacture of continuous cast ingots of different dimensions one and the same mold and without one previously necessary for the continuous casting process manual adjustment of the mold opening allowed.
  • the lowerable floor has fixed dimensions has, on the mold frame at least one end wall on the adjacent side walls is slidably mounted, the position of the slidable end walls to each The timing of each position can be determined by means of a position measuring device in the course of the continuous casting process movable end wall by means of a Control unit adjustable drive takes place, and the induction loops as well as the shields of the individual walls connected via flexible electrical conductors to form closed loops are.
  • the opposite ones are used stationary side walls, which expediently with the end walls enclose an approximately right angle and together with these end walls the mold opening form, for example segmented according to EP 0 109 357 and / or with a Inductor provided, for example, according to DE-OS 28 48 808 on the side edge and in the Side center has different vertical dimensions.
  • the bar width can be adjusted by program-controlled regulation the mold opening or the end wall distance can be set, this by the Positioning either only one end wall or, for example, by counter-rotating Shifting of both end walls can happen.
  • the following description will therefore assumed the setting of a single end wall per mold, although for certain mold designs are symmetrical and symmetrical with respect to the center of the mold simultaneous adjustment of both end walls can be advantageous.
  • the subject of the invention includes the regulation of the mold opening by adjustment from only one end wall as well as by simultaneously adjusting both themselves opposite end walls.
  • the end wall distance can be in one area vary appropriately from 10 to 1000 mm and in particular from 100 to 500 mm.
  • the flexible electrical conductors are used to connect the induction loops and shields of the individual walls, so that a closed induction loop and an electrical closed electromagnetic shielding is formed.
  • the flexible electrical conductor preferably have a high electrical conductivity and are of such length trained that they do not restrict the movements of the end walls.
  • be Conductors of the appropriate length made of copper strips or copper strands are preferably used.
  • the flexible electrical conductors at least partially as coolant-carrying ladder formed, for example in the form of flexible hoses, on their wrapping -- for example separated by an insulator - the electrical conductor is applied.
  • each movable front wall is positioned and fixed over at least an axle shaft, for example, lying parallel to the direction of movement of the end wall, these being designed as a solid or hollow profile, or as a piston-shaped element can.
  • Each movable end wall is, for example, according to at least one axle shaft positioned in a given program.
  • the axle shaft is expediently fixed in the center of the front wall.
  • a synchronous movement is required of all axle shafts involved in the movement of the bulkhead.
  • the thrust required for positioning and fixing the end wall is expediently carried out by a drive shaft driven by a motor, the Rotary movement of the drive shaft in the direction of an axial thrust by means of a gear the axle shaft can be transferred.
  • a drive shaft driven by a motor the Rotary movement of the drive shaft in the direction of an axial thrust by means of a gear the axle shaft can be transferred.
  • Gearwheels in the form of single or multi-stage gearwheels are preferred used. These allow the rotational movement of the Drive shaft on the axle shaft / s in a defined transmission ratio.
  • cylindrical spur gears bevel or are suitable as gear drives Worm gears.
  • the cylindrical gears can be straight, oblique, arrow-shaped (Arrow gears), or helical (helical gears) as well as internal or external teeth be.
  • Bevel gears have a conical circumferential surface with straight, helical or curved teeth on.
  • the displacement of the end wall required for setting the mold opening can be done, for example, by an axle shaft that is firmly connected to the end wall, the other end of the axle shaft is designed as a rack, in which - - possibly via a transmission gear - one that is firmly connected to the drive shaft Gear engages.
  • axle shaft (s) can be fixed on the end wall, for example by screwing, Jamming, riveting or welding happen.
  • --zum are preferred Purposes of easier interchangeability with mold elements subject to wear - Detachable connections used.
  • Another way to transfer the rotary motion of the drive shaft into one Axial displacement of the end wall lies, for example, in the transmission of the rotary movement the drive shaft to the axle shaft / s by torque transmission using a Gear such as a gear transmission, the drive and axle shafts each have a gear firmly connected to their axes.
  • the rotary motion of the axle shaft / n can then, for example, by means of a spindle gear, i.e. one in the front wall or in a molding of the end wall existing threaded hole, in which the on their Threaded shaft shaft (spindle) engages in an axial Movement of the end wall can be transferred.
  • the EMC mold designed according to the present invention enables the stepless Setting of the bar dimensions, while with the previously known EMC molds with adjustable end walls usually only between 3 and 5 positions Definition of the end walls are available.
  • the EMC mold according to the invention is suitable for the continuous casting of bars of metal, expediently made of light metal and in particular for the production of continuous cast ingots made of aluminum and its alloys.
  • the invention also relates to a method for the continuous casting of metal bars by means of a electromagnetic continuous casting mold according to the present invention.
  • the distance between the mold end walls is initially set in such a way that that through the mold walls, resp. the force field resulting from the inductor Defined initial cross section of the melt column essentially that of the inner contours of the lowerable mold base corresponds to the defined cross-section, and the distance of the mold end walls in the course of the continuous casting process by means of the Control unit adjustable drive in cooperation with the lowering of the mold bottom is controlled program-controlled such that the cross-sectional dimensions of the resulting molten metal strand continuously or gradually to the dimensions of the desired continuous cast ingot.
  • the metal melt is caused by the electromagnetic
  • the spatial extent of the force field is limited to the interior of the inductor, so that the method according to the invention at no time, and in particular not to Beginning of the continuous casting process, a tight seal between the mold frame and the mold bottom requires.
  • the regulation of the end wall distance effected by the control unit is preferred according to a predefined program, a so-called setpoint curve, time-dependent controlled.
  • the distance between the end walls is regulated in a further preferred manner in such a way that that the positioning of each movable end wall caused by the control unit according to the difference from the measured time-dependent position of the concerned End wall and a time-dependent position value defined in a program (Setpoint curve) happens.
  • the cross section of the melt column can be at the beginning of the method according to the invention be chosen larger or smaller than the cross section of the ingot to be produced.
  • the mold opening can then progressively follow the course of the lowering of the mold base or continuously changed so that the cooled ingot the desired Cross-section, whereby a conical at the beginning of the continuous casting process Part or more of the following conical parts are gradually created.
  • the simple or step-shaped conical parts can, for example, be truncated pyramids or have a frustoconical shape.
  • the shape of the conical billet parts essentially results from the speed the change in distance of the end walls in interaction with the speed the mold bottom lowering.
  • the process is preferably controlled in such a way that the Surface normal of the resulting conical billet parts with a minimal billet axis includes an acute angle of 25 °, i.e. the corresponding angle of the truncated cone or. pyramid-shaped bar parts is between 25 and 90 °.
  • the maximum lowering depth of the mold bottom until the constant is reached and melting column cross-section necessary for the desired ingot cross-sectional dimensions i.e. the height of the truncated pyramid or truncated cone part, expediently less than 50 cm and in particular less than 30 cm.
  • FIG. 1 shows a system of adjustable electromagnetic molds, - of the better clarity because - two corresponding molds 60 are shown as an example are.
  • Each mold 60 has a mold frame 62 containing a pair of opposed ones Side walls 20 and a pair of opposite movable end walls 10, which together form the mold opening 12.
  • the side and end walls are made each consisting of an inductor part with an induction loop and a shield 28 the connection 18 becomes the induction loop 70 of the side wall 20 with a - - Not shown - induction loop of the end wall electrically connected.
  • the electrical Connection of the shield 28 attached to the side wall 20 with that on an end wall attached shielding is done through connection 19.
  • the electrical connections 18 and 19 are made of flexible electrical conductors with high electrical conductivity educated.
  • Copper tapes or copper strands are expediently used for this purpose.
  • the side walls 20 of each mold 60 are spaced apart by profiles 25 rigidly connected.
  • the end walls 10 are by means of sliding shoes 15 which Have recesses in which fastened on the surface 21 of the side walls 20 Guide rails 16 engage, are slidably mounted and are supported by axle shafts 30 driven.
  • the axle shafts are common with a gearbox 32 for a series drive shaft 34 connected by continuous casting molds 60 operating in parallel.
  • the drive shaft 34 is driven by an electric motor 40, the control of the electric motor by means of a control unit (not shown) according to a predetermined program in accordance with the determined with the position measuring device 50 Position of the end wall 10 happens.
  • Figure 2 shows a perspective view of a movably mounted on a side wall and by means of a spindle gear adjustable end wall, the mold bottom is not shown.
  • Figure 2 thus shows an example of the principle of an end wall drive.
  • On the end wall 10 is a slide shoe 15 by means of screws or rivets, for example attached.
  • the sliding shoe 15 has at least one recess in which one the surface 21 of the side wall 20 attached guide rail 16 engages so that the End wall 10 is slidably mounted on the side wall 20.
  • the position of the bulkhead 10 is determined by the axle shaft 30.
  • the slide shoe 15 has another Recess in the form of a threaded bore, which is from a threaded rod or spindle 36 is penetrated, so that one of the drive shaft 34 via the gear transmission 32 transmitted to the axle shaft, which is at least partially designed as a spindle 36 Rotational movement in cooperation with the threaded bore in the slide shoe 15 to one slip-free displacement of the end wall 10 leads.
  • a side wall 20 of the mold 60 has a mold frame 62 which is fixed with screws 66 an insulation body 64. This is one of screws 68 stopped induction loop 70, which cools a cooling channel 72. On the mold frame 62 an electromagnetic shield 28 is attached with further screws 74, which leaves a gap 76 to the induction loop 70, from which a cooling jet from a water chamber 80 via a channel 82 to the surface of a cast - shown in dashed lines in Figure 1 - Barrens 54 hits.
  • the end walls 10 have otherwise a similar structure to the side walls 20th
  • the program-controlled Position the end walls according to the mold opening Set the desired dimensions of the continuous cast ingot to be produced continuously, see above that continuous cast ingots of any dimensions can be manufactured inexpensively.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • General Induction Heating (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Electromagnets (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
EP95810201A 1994-04-06 1995-03-24 Regulierbare elektromagnetische Stranggiesskokille Expired - Lifetime EP0679460B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH997/94 1994-04-06
CH99794 1994-04-06
CH00997/94A CH688991A5 (de) 1994-04-06 1994-04-06 Regulierbare elektromagnetische Stranggiesskokille.

Publications (2)

Publication Number Publication Date
EP0679460A1 EP0679460A1 (de) 1995-11-02
EP0679460B1 true EP0679460B1 (de) 1999-08-18

Family

ID=4200047

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95810201A Expired - Lifetime EP0679460B1 (de) 1994-04-06 1995-03-24 Regulierbare elektromagnetische Stranggiesskokille

Country Status (8)

Country Link
EP (1) EP0679460B1 (es)
AT (1) ATE183419T1 (es)
CA (1) CA2146078A1 (es)
CH (1) CH688991A5 (es)
DE (1) DE59506622D1 (es)
ES (1) ES2136822T3 (es)
FI (1) FI951632A (es)
NO (1) NO951296L (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0812638A1 (de) * 1996-06-14 1997-12-17 Alusuisse Technology & Management AG Regulierbare Stranggiesskokille
US20090050290A1 (en) * 2007-08-23 2009-02-26 Anderson Michael K Automated variable dimension mold and bottom block system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57171554A (en) * 1981-04-14 1982-10-22 Kawasaki Steel Corp Automatic controller for short side of mold
FR2547220B3 (fr) * 1983-06-08 1986-02-21 Usinor Procede pour modifier la largeur d'une brame de coulee continue sans interrompre la coulee
DE3335762A1 (de) * 1983-10-01 1985-04-25 Benteler-Werke AG, 4790 Paderborn Verstellbare stranggiesskokillenanordnung
DE3406699C1 (de) * 1984-02-22 1985-01-10 Schweizerische Aluminium Ag, Chippis Elektromagnetische Stranggiesskokille
US5249622A (en) * 1992-04-13 1993-10-05 Stelco Inc. Retrofitted width adjusting mechanism for continuous casting

Also Published As

Publication number Publication date
CH688991A5 (de) 1998-07-15
NO951296D0 (no) 1995-04-04
FI951632A0 (fi) 1995-04-05
NO951296L (no) 1995-10-09
CA2146078A1 (en) 1995-10-07
ATE183419T1 (de) 1999-09-15
DE59506622D1 (de) 1999-09-23
ES2136822T3 (es) 1999-12-01
FI951632A (fi) 1995-10-07
EP0679460A1 (de) 1995-11-02

Similar Documents

Publication Publication Date Title
DE3205480C2 (es)
AT391432B (de) Vorrichtung zum horizontalen stranggiessen
DE2906261A1 (de) Verfahren und vorrichtung fuer den direkten kokillenguss von nichteisenmetallen durch eine offene form
DE60107690T2 (de) Verfahren und vorrichtung zur herstellung von metall-legierungs-gussteilen
DE2414514A1 (de) Stranggiessverfahren
EP3515634B1 (de) Regelung der schmalseitenkonizität einer stranggusskokille : verfahren und vorrichtung
CH639297A5 (de) Zum einstellen auf unterschiedliche strangquerschnittsformate geeignete stranggiesskokille.
DE3142099A1 (de) Verfahren und vorrichtung zum stranggiessen von metall unter gesteuerter belastung
EP3993921B1 (de) Schmelzezuführung für bandgussanlagen
DE3440236C2 (es)
DE4238654A1 (es)
EP0679460B1 (de) Regulierbare elektromagnetische Stranggiesskokille
DE19639299C2 (de) Vorrichtung zur Herstellung eines Vielkant- oder Profil-Formats in einer Stranggießanlage
DE1508965B1 (de) Verfahren und Vorrichtung zum Stranggiessen von Aluminium und Aluminiumlegierungen
DE2853868C2 (de) Verfahren zum Stranggießen von Stahl sowie dementsprechend hergestellter Stahlstrang
DE4234135C2 (de) Verfahren und Vorrichtung für das Horizontal-Stranggießen
EP1050355B1 (de) Verfahren zum Herstellen von stranggegossenen Stahlerzeugnissen
DE3440235C2 (de) Verfahren und Vorrichtung zum Bandstranggießen von Metallen, insbesondere von Stahl
DE60205168T2 (de) Verfahren und Vorrichtung zum vertikal Giessen von Rohblöcken und so hergestellter Rohblock
EP0812638A1 (de) Regulierbare Stranggiesskokille
DE2406252C3 (de) Verfahren und Vorrichtung zum Stranggießen und Weiterverarbeiten des gegossenen Strangs
DE2923110A1 (de) Verfahren zum anfahren einer stranggiessanlage
DE19710887C2 (de) Verwendung einer Kokille zum Herstellen von Barren aus Leichtmetall oder einer Leichtmetallegierung, insbesondere aus Magnesium oder einer Magnesiumlegierung
DE2063545C3 (de) Viereckige Stranggießkokille
EP0156764A1 (de) Elektromagnetische Stranggiesskokille

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

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE ES FR GB IT LI NL PT SE

17P Request for examination filed

Effective date: 19960502

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ALUSUISSE TECHNOLOGY & MANAGEMENT AG

17Q First examination report despatched

Effective date: 19980806

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

ITF It: translation for a ep patent filed

Owner name: DE DOMINICIS & MAYER S.R.L.

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES FR GB IT LI NL PT SE

REF Corresponds to:

Ref document number: 183419

Country of ref document: AT

Date of ref document: 19990915

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19990818

REF Corresponds to:

Ref document number: 59506622

Country of ref document: DE

Date of ref document: 19990923

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2136822

Country of ref document: ES

Kind code of ref document: T3

ET Fr: translation filed
REG Reference to a national code

Ref country code: PT

Ref legal event code: SC4A

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 19991019

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000324

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000325

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 20000325

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001001

EUG Se: european patent has lapsed

Ref document number: 95810201.4

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20000324

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20001001

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010103

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010531

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010930

REG Reference to a national code

Ref country code: PT

Ref legal event code: MM4A

Free format text: LAPSE DUE TO NON-PAYMENT OF FEES

Effective date: 20010930

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20020325

Year of fee payment: 8

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20020204

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20020404

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20020405

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030324

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030331

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030331

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030331

BERE Be: lapsed

Owner name: *ALUSUISSE TECHNOLOGY & MANAGEMENT A.G.

Effective date: 20030331

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050324

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000324

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000331