EP0287503B1 - Verfahren und Druckkühlaggregat zum Kühlen eines durchlaufenden Produktes - Google Patents

Verfahren und Druckkühlaggregat zum Kühlen eines durchlaufenden Produktes Download PDF

Info

Publication number
EP0287503B1
EP0287503B1 EP88730063A EP88730063A EP0287503B1 EP 0287503 B1 EP0287503 B1 EP 0287503B1 EP 88730063 A EP88730063 A EP 88730063A EP 88730063 A EP88730063 A EP 88730063A EP 0287503 B1 EP0287503 B1 EP 0287503B1
Authority
EP
European Patent Office
Prior art keywords
cooling
pressure
presswater
chamber
rolling stock
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
EP88730063A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0287503A3 (en
EP0287503A2 (de
Inventor
Walter Dipl.-Ing. Krenn
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.)
KRENN, WALTER, DIPL.-ING.
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0287503A2 publication Critical patent/EP0287503A2/de
Publication of EP0287503A3 publication Critical patent/EP0287503A3/de
Application granted granted Critical
Publication of EP0287503B1 publication Critical patent/EP0287503B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0224—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for wire, rods, rounds, bars
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/62—Quenching devices
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/573—Continuous furnaces for strip or wire with cooling

Definitions

  • the invention relates to a method for cooling hot rolled rolling stock, with / without direct patenting, in which pressurized water is pressed onto the hot rolling surface of the rolling stock within a pressure chamber between accumulation edges, the cooling unit being acted upon with a lot of pressurized water, preferably with the amount of heat to be extracted from the rolling stock is in equilibrium with the desired cooling temperature of the rolling stock with the heat removal by heating the pressurized water in the pressure chamber of a convection cooling part, and the heat removal by the evaporation heat given off to a pressurized water / steam mixture in the pressurized chamber of an evaporative cooling part, preferably up to the boiling point of the pressurized water is achieved and the cooling in pressurized water and in the pressurized water-steam mixture is controllable.
  • the invention also relates to a cooling unit for carrying out the method for cooling hot rolled rolling stock, with / without direct patenting, in which pressurized water is pressed within a pressure space between accumulation edges onto the hot rolling surface of the rolling stock, the cooling unit coming from the pressure space of a convection cooling part, the convection pressure space between the Accumulation edges, in which heat is withdrawn from the hot rolled rolling stock, primarily by convection, from inflowing pressure water that is pressed onto the hot rolling surface, preferably up to the boiling point of the pressurized water, and from the pressure chamber of an evaporative cooling part, the evaporation pressure chamber between the accumulation edges, 9); 8, in which the rolling stock Heat is further extracted primarily by the heat of vaporization, from the pressure water / steam mixture flowing through and pressed onto the surface of the rolling stock and produced in the convection pressure chamber. See EP-A 0 266 302 not previously published and falling under Art. 54 (3).
  • the cooling of shaped, hot, continuous production goods has a significant influence on the quality and manufacturing costs of finished products made of steel and metal.
  • the final rolling speed in the production of hot wide strip has increased to 2.5 times, the coil weight to 45 t and the capacity to 6 million t / year, with wire rod, the final rolling speed has increased to 120 m / s and the coil weight to 3000 kg and the monthly production on 30,000 t / rolling core (Mommertz, KH: " Stahl u. Eisen” 106 (1968) No. 6, pp. 255/62).
  • cooling water quantities of the order of 10,000 m3 / h and more are used today.
  • the cooling in pressure cooling units should be run as deeply as possible so that the shortage from cooling with blower air can be reduced.
  • the method described in EP-A 0 266 302 with a pressure cooling unit it is possible to drive a cooling temperature which may already be closer to the quality-dependent martensite line in the ZTU diagram.
  • the invention has for its object to develop a method with a pressure cooling unit with which the heat removal during the cooling shaped, hot, continuous production goods made of steel and metal in pressurized water within a pressure cooling unit can be performed so that the majority of the production goods made of steel and metal can be cooled with increased metallurgical and temperature accuracy, greater uniformity across the width and length of the items to be cooled and better economy.
  • the object is achieved, on the one hand, in that for cooling hot rolled rolling stock, with / without direct patenting, in the pressurized water within a pressure space between accumulation edges is pressed onto the hot rolled rolling stock surface, the cooling unit being pressurized with a quantity of pressurized water, preferably with that
  • the amount of heat to be removed from the rolling stock is in equilibrium with the heat removal by heating the pressurized water in the pressure chamber of a convection cooling part and the heat removal by the evaporation heat given off to a pressurized water / steam mixture in the pressure chamber of an evaporative cooling part (2), preferably to the boiling point of the pressurized water, the desired cooling temperature of the rolling stock is reached and the cooling in pressurized water and in the pressurized water-steam mixture can be controlled.
  • the call is also resolved by a cooling unit for carrying out the method according to claim 1 for cooling hot rolled rolling stock, with / without direct patenting, in which pressurized water within a pressure chamber is pressed between the accumulation edges onto the rolling roll surface, the cooling unit coming from the pressure chamber of a convection cooling part, the convection pressure space between the accumulation edges, in which heat is withdrawn from the hot rolled material, primarily by convection, from inflowing pressure water pressed into the rolled material surface, preferably up to the boiling point of the pressure water, and from the pressure space of an evaporative cooling part, the evaporation -Pressure space (2) between the accumulation edges in the rolling stock, primarily by the evaporation heat, from the flowing through and pressed onto the rolling stock surface, generated in the convection pressure chamber, heat-steam mixture, and besides the cooling- and guide pressurized water inflow into the convection cooling section in the evaporative cooling section, further guide pressurized water inflows and condensation pressurized water inflows
  • the part of the pressure chamber in the pressure cooling unit in which the cooling pressurized water and the guide pressurized water flow in and extract heat from the production goods is referred to as the convection cooling part.
  • the evaporative cooling part is the part of the pressure chamber in the pressure cooling unit in which the pressurized water flowing in from the convection cooling part, as a hot water-steam mixture, conducted with the condensed pressurized water, further extracts heat from the product.
  • Cooling pressurized water is specified pressurized water that serves as the base load for heat extraction.
  • Leading pressurized water is regulated pressurized water that is used to guide the removal of heat and the removal of heat until the pressurized water is heated to the boiling point.
  • Condensed pressurized water is metered pressurized water that serves to control the degree of evaporation (the proportion of steam in the hot water / steam mixture).
  • the part of the pressure chamber into which the main amount of the pressurized water flows usually the middle part, is referred to as the convection pressure chamber, even if the pressure cooling unit has only a single part of the pressure chamber.
  • the evaporation pressure chamber All other parts of the pressure chamber are referred to as the evaporation pressure chamber, irrespective of whether the heat is extracted therein mainly by evaporation or by convection.
  • the water accumulation edge is the accumulation edge of a pressure chamber through which the product to be produced flows into the individual pressure chambers.
  • the inflow dam edge is the storage edge of a pressure chamber through which the pressurized water / hot water / steam mixture flows into the individual pressure chambers.
  • the advantages achieved by the invention are, in particular, that with the method according to the invention with a pressure cooling unit, a large part of the shaped, hot, continuous production goods can be cooled at all in a guided manner, so that the desired consequences of cooling intensity in accordance with the product, dimensions, quality and timing are comparatively very low Temperature range can be driven so that no undesirable structural components can form in the finished product and that only a comparatively small amount of pressurized water is required for this.
  • the measurement records in Fig. 5-6 and Fig. 7-8 show that the cooling temperature becomes stable to the extent that the amount of pressure water flowing through increases in relation to the length of the pressure chamber. In other words, the cooling temperature becomes stable to the extent that, in relation to the amount of pressurized water flowing through, the distance between the damming edges decreases and the pressure chamber becomes shorter.
  • the measurement records in the sequence Fig. 7 - Fig. 6, with the pressure chamber lengths 3 - 1, with the pressurized water quantities 10 11 (may be considered as apply equally) confirm this conclusion.
  • the numbers for the length of the pressure chamber and the amount of pressure water are ratio numbers.
  • the cooled product would have a cooling temperature of around 350 ° C in the order of magnitude the condensation water flowing in according to the invention does not limit the cooling intensity in the evaporation pressure spaces to, for example, 550 ° C.
  • the inflowing amount of pressurized water would be reduced in order not to have to limit the effect of heat removal by the heat of evaporation by a higher amount of condensed pressurized water.
  • FIG. 9 For the representation of the heat transfer coefficient ⁇ , the generally known diagram, FIG. 9, of the dependencies during container boiling, is used as a representation aid.
  • the measurement records in Fig. 6 show a heat removal at an ⁇ value of 100400 kJ / m3.h. ° C (point X).
  • point X the maximum of point Z.
  • the addition of cold condensed pressurized water in the evaporative cooling section of the pressurized cooling unit increases the density of the hot water -Vapor mixture increased, whereby the ⁇ value is stopped, stabilized or reduced in a guided manner on its self-propelled increase.
  • the ⁇ value is increased again by reducing the amount of condensed water under pressure in the same way.
  • the heat removal up to the ⁇ value X is primarily carried out with the guide pressure water and stabilized at this value with the condensation pressure water and held at this value when the input values change, so that it is possible for everyone to physically in Pressure water, product, dimension and quality-related cooling process, with molded, hot, continuous production goods, with a comparatively small cooling temperature range and a small amount of pressurized water.
  • the accumulation edges (3) and (4) also called the inlet and outlet stowage edge
  • the cooling flows through the inflows (5) and (6) - And guide pressurized water via the valves with actuator (13) and (14), from the pressurized water supply lines (10) and (11) into the pressure chamber (2).
  • the cooling and guiding pressurized water is preferably heated to its boiling temperature, which flows as a hot water-steam mixture in the evaporative cooling part (9), in which the pressure through the inflow (7) into the pressure chamber (2 ), via the valve with actuator (15), from the pressurized water supply line (12), inflowing condensed pressurized water the increasing, self-propelled evaporation (SV), through the metered inflowing condensed pressurized water, into a guided evaporation (GV) on the product -, dimension and quality-based evaporation guide point (VF) is converted.
  • a guided evaporation GV
  • a water hammer protection device (19) which is usefully coupled to a water suction device, is arranged in each pressure chamber, which is arranged during the breaks and sucks water up to the point in time at which the beginning of the production goods which have passed through has reached the outlet stowage edge of the pressure chamber in question.
  • a hot water / steam mixture extraction device (20) is arranged in individual pressure rooms. If two or more pressure cooling units are arranged one behind the other, the air should be admitted to the one to be cooled Product surface between these are prevented, so this space is covered with a sliding water dam (21).
  • Fig. 3 In the pressure cooling unit (1) flows into the convection pressure chamber (8.1), with the accumulation edges (3) and (4), through the inflow (16), the cooling and guiding pressure water together with the valve Stellglid (18), from the pressurized water supply line (17), is preferably heated there to its boiling point and flows as a hot water / steam mixture over the accumulation edges (3) and (4) into the evaporation pressure chambers (9.1) and (9.2) and flows from there, extracting heat from the production goods through the heat of vaporization, through the accumulation edges (3.1) and (4.1) from the pressure cooling unit.
  • the process of cooling medium-sized production goods starting with the second cooling process: at the moment of the discharge of the previously passed production goods, the inflow of the cooling and guide pressurized water is caused by the inflows (5) and (6) or (16) and by (6.1) and (6.2) reduced to a minimum value and the water suction device of the combined water hammer protection with water suction device (19), (19.1) and (19.2) switched on in a pulse-controlled manner, so that the water in the pressure chambers is depressurized and suctioned off.
  • the production goods run into the pressure cooling unit. If the water pressure currently occurring in a pressure room exceeds a certain level, the water hammer protection devices (19.1), (19) and (19.2) respond as soon as the beginning of the production goods reaches the respective outlet storage rim (3), ( 4) and (4.1) of the pressure chambers (9.1), (8.1) and (9.2), the respective water hammer protection and water suction device (19.1), (19) and (19.2) switches off, at the same time the inflows (7.1), ( 6.1), (5), (4) or (16), (6.2) and (7.2) with the relevant target pressure water quantity, product, dimension and quality related.
  • the target pressure water quantity specified in the recipe is applied to the shaped, hot, continuous surface of the production goods in a split second and extracts heat from it. If the cooling temperature measured after the pressure cooling unit is too high, the inflows (5) or (16), (6.1) and (6.2) are preferably increased in sequence until the target cooling temperature is reached. At this moment, the condensed pressure water flowing in through the inflows (7.1) and (7.2) is already leading the degree of evaporation of the hot water-steam mixture at the evaporation guide point VF, which would otherwise reach the outflow dam edges (3.1) and ( 4.1) would drive self-driving to the arbitrary point SV, so that the desired target cooling temperature is applied to the recorder.
  • baffle edges (3.1), (3), (4) and (4.1 ) In order to keep the wear of the baffle edges low, it is useful to increase the pressure of the pressurized water when the production goods that are getting heavier cool and to lengthen the constrictions in the baffle edges so that the baffle edges (3.1), (3), (4) and (4.1 ) also act as a water-lubricated plain bearing.
  • Fig. 4 The pressure cooling unit (1) functionally shown in Fig. 4, with the convection pressure chamber (8.1) and four evaporation pressure chambers (9.1 - 9.4), is both for cooling with a maximum of heat extraction achievable in such a pressure cooling unit as well suitable for cooling with minimally durable heat removal.
  • the procedure differs only in that the heat transfer value .alpha. Is driven at the quality-related maximum value in one process of heat extraction and at its minimum value in the other process at its pressure cooling unit.
  • the length of the pressure cooling unit is of the order of 1 m to 20 m and more. If the pressure cooling unit is used after shaping, if it is used within the deformation process, the lengths must adapt to the deformation conditions and be shortened to a fraction of a meter. Existing short pressure cooling units can also be functionally coupled to longer ones with the help of the water retention socket (21).
EP88730063A 1987-03-13 1988-03-14 Verfahren und Druckkühlaggregat zum Kühlen eines durchlaufenden Produktes Expired - Lifetime EP0287503B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3708128 1987-03-13
DE19873708128 DE3708128A1 (de) 1987-03-13 1987-03-13 Verfahren und druckkuehlaggregat zum gefuehrten abkuehlen geformten, schweren bis leichten, heissen, durchlaufenden produktionsguts aus stahl und metall in druckwasser

Publications (3)

Publication Number Publication Date
EP0287503A2 EP0287503A2 (de) 1988-10-19
EP0287503A3 EP0287503A3 (en) 1989-02-08
EP0287503B1 true EP0287503B1 (de) 1993-07-28

Family

ID=6322959

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88730063A Expired - Lifetime EP0287503B1 (de) 1987-03-13 1988-03-14 Verfahren und Druckkühlaggregat zum Kühlen eines durchlaufenden Produktes

Country Status (4)

Country Link
EP (1) EP0287503B1 (es)
AT (1) AT391880B (es)
DE (2) DE3708128A1 (es)
ES (1) ES2043880T3 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19718530A1 (de) * 1997-05-02 1998-11-12 Schloemann Siemag Ag Verfahren und Kühlaggregat zum Kühlen von walzwarmem Walzgut, insbesondere von Warmbreitband

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4009228A1 (de) * 1990-03-22 1991-09-26 Krenn Walter Verfahren und druckkuehlaggregat zum gleichzeitig unterschiedlichen abkuehlen ausgewaehlter bereiche durchlaufenden produktionsguts, mit flach- oder profilquerschnitt, aus stahl und anderem
DE4429203C2 (de) * 1994-08-18 1997-05-28 Krenn Walter Verfahren und Druckkühlaggregat zum Abkühlen eines durchlaufenden Produktionsgut aus Stahl oder anderem

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1925416C3 (de) * 1968-03-12 1979-08-02 Walter 4330 Muelheim Krenn Kühlstrecke für Walzdraht oder Stabmaterial
DE3043117A1 (de) * 1968-03-12 1982-07-01 Walter 4330 Mülheim Krenn Kuehlstrecke fuer walzdraht oder stabmaterial
DE1608327C3 (de) * 1968-03-12 1973-10-31 Walter 4330 Muelheim Krenn Kuhlstrecke fur Walzdraht oder Stabmatenal
DD110774A1 (es) * 1974-04-10 1975-01-12
DD147506A1 (de) * 1979-11-29 1981-04-08 Bernhard Hoericke Druckkuehlrohr zum direkten kuehlen von waermgut,vorzugsweise walzmaterial
DE3266328D1 (en) * 1981-05-13 1985-10-24 Florin Stahl Walzwerk Pressurised cooling pipe for the direct intensive cooling of rolling mill products
AU559731B2 (en) * 1981-11-19 1987-03-19 Kawasaki Steel Corp. Continuously quenching steel plates
DE3626741A1 (de) * 1986-08-07 1988-02-18 Krenn Walter Kuehlaggregat und verfahren zum abkuehlen walzwarmen walzguts, mit/ohne direktpatentieren, in druckkuehlwasser

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19718530A1 (de) * 1997-05-02 1998-11-12 Schloemann Siemag Ag Verfahren und Kühlaggregat zum Kühlen von walzwarmem Walzgut, insbesondere von Warmbreitband
DE19718530B4 (de) * 1997-05-02 2005-02-03 Sms Demag Ag Verfahren zum Kühlen von walzwarmem Walzgut und Vorrichtung zur Durchführung des Verfahrens und Verwendung der Vorrichtung

Also Published As

Publication number Publication date
DE3708128A1 (de) 1988-09-22
EP0287503A3 (en) 1989-02-08
AT391880B (de) 1990-12-10
EP0287503A2 (de) 1988-10-19
ATA60088A (de) 1990-06-15
DE3882569D1 (en) 1993-09-02
ES2043880T3 (es) 1994-01-01

Similar Documents

Publication Publication Date Title
DE1752549A1 (de) Verfahren und Vorrichtung zum Kuehlen von gewalzten Metallstreifen
EP1232808A2 (de) Verfahren zum Kaltwalzen von nahtlosen Kupferrohren
EP0287503B1 (de) Verfahren und Druckkühlaggregat zum Kühlen eines durchlaufenden Produktes
DE2733977C2 (es)
EP0987064A2 (de) Kontinuierliche Feinstahl- oder Drahtstrasse
DE3518925A1 (de) Verfahren zum kontrollierten stab- und drahtwalzen legierter staehle
DE102013212951A1 (de) Gießwalzanlage und Verfahren zum Herstellen von metallischem Walzgut
EP1463591B1 (de) Verfahren und walzanlage zum herstellen von draht, stäben oder nahtlosen rohren
DE4308449A1 (de) Walzblock zum Walzen von metallischen Stäben oder Draht
DE2522070A1 (de) Walzgutfuehrung fuer ein walzgeruest
DE1427875A1 (de) Walzwerk zum Walzen und Verfahren zum Herstellen von Profilen,wie Doppel-T-Traegern od.dgl. mit duennen Wandstaerken
DE1934302C3 (de) Verfahren und Vorrichtung zum Warmwalzen von Metallbrammen
EP0998993A2 (de) Verfahren und Vorrichtung zum Kühlen von walzwarmem Walzgut, insbesondere Warmbreitband
AT390273B (de) Kuehlaggregat und verfahren zum abkuehlen walzwarmen walzguts
DE2440415A1 (de) Verfahren und vorrichtung zur gesteuerten abkuehlung von walzgut, insbesondere von stabmaterial
DE102009048567B4 (de) Verfahren und Anordnung zum Kühlen eines Gießstrangs in einer Stranggießanlage
EP3941655B1 (de) Anlage und verfahren zur herstellung von metallischem warmband
DE2545935A1 (de) Verfahren und walzwerk zum auswalzen einer bramme, vorzugsweise einer stranggussbramme, zu einem knueppel mit quadratischem oder annaehernd quadratischem querschnitt
AT409463B (de) Walzwerksanlage
EP1038600B1 (de) Anordnung des mehrgerüstigen Fertigblocks und des, diesem nachgeordneten mehrgerüstigen Nachblocks in einadrigen Drahtwalzstrassen
DE2528850C3 (de) Pilgerschrittwalzwerk zum Rohrkaltwalzen
DE10261632A1 (de) Verfahren und Walzanlage zum Herstellen von Draht, Stäben oder nahtlosen Rohren
EP0845310A1 (de) Drahtkühlung
DD286706A7 (de) Kuehlrohr fuer walzadern
EP0743109A1 (de) Verfahren und Vorrichtung zum bündigen Abbremsen des Restendes einer Walzlänge beim Transport auf ein Kühlbett

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: A2

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

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

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

17P Request for examination filed

Effective date: 19890807

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

Owner name: KRENN, WALTER, DIPL.-ING.

RIN1 Information on inventor provided before grant (corrected)

Inventor name: KRENN, WALTER, DIPL.-ING.

17Q First examination report despatched

Effective date: 19901016

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE CH DE ES FR GB IT LI LU SE

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

Ref country code: SE

Effective date: 19930728

REF Corresponds to:

Ref document number: 3882569

Country of ref document: DE

Date of ref document: 19930902

ITF It: translation for a ep patent filed

Owner name: SANDRA BASEVI

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

Effective date: 19931029

ET Fr: translation filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2043880

Country of ref document: ES

Kind code of ref document: T3

ITTA It: last paid annual fee
EPTA Lu: last paid annual fee
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
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19970320

Year of fee payment: 10

Ref country code: ES

Payment date: 19970320

Year of fee payment: 10

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

Ref country code: FR

Payment date: 19980304

Year of fee payment: 11

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

Ref country code: DE

Payment date: 19980310

Year of fee payment: 11

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

Ref country code: LU

Payment date: 19980311

Year of fee payment: 11

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

Ref country code: CH

Payment date: 19980312

Year of fee payment: 11

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: 19980314

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

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 19980316

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

Ref country code: BE

Payment date: 19980326

Year of fee payment: 11

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

Effective date: 19980314

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

Ref country code: LU

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

Effective date: 19990314

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: 19990331

Ref country code: CH

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

Effective date: 19990331

Ref country code: BE

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

Effective date: 19990331

BERE Be: lapsed

Owner name: KRENN WALTER

Effective date: 19990331

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: FR

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

Effective date: 19991130

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: DE

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

Effective date: 20000101

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20000601

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: 20050314