EP0340504B1 - Dispositif pour plier et balancer des cylindres décalables axialement d'une cage de laminoir - Google Patents

Dispositif pour plier et balancer des cylindres décalables axialement d'une cage de laminoir Download PDF

Info

Publication number
EP0340504B1
EP0340504B1 EP89106674A EP89106674A EP0340504B1 EP 0340504 B1 EP0340504 B1 EP 0340504B1 EP 89106674 A EP89106674 A EP 89106674A EP 89106674 A EP89106674 A EP 89106674A EP 0340504 B1 EP0340504 B1 EP 0340504B1
Authority
EP
European Patent Office
Prior art keywords
bending
housing
roll
guide block
lifting housing
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
EP89106674A
Other languages
German (de)
English (en)
Other versions
EP0340504A2 (fr
EP0340504A3 (en
Inventor
Heinrich Bohnenkamp
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.)
SMS Siemag AG
Original Assignee
SMS Schloemann Siemag AG
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 SMS Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Priority to AT89106674T priority Critical patent/ATE85912T1/de
Publication of EP0340504A2 publication Critical patent/EP0340504A2/fr
Publication of EP0340504A3 publication Critical patent/EP0340504A3/de
Application granted granted Critical
Publication of EP0340504B1 publication Critical patent/EP0340504B1/fr
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
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/18—Adjusting or positioning rolls by moving rolls axially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B29/00—Counter-pressure devices acting on rolls to inhibit deflection of same under load, e.g. backing rolls ; Roll bending devices, e.g. hydraulic actuators acting on roll shaft ends
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B21B31/203—Balancing rolls

Definitions

  • the invention relates to a bending and balancing device for axially displaceable rolls of a roll stand, in particular for the work rolls of a four-high roll stand, a guide block being arranged on both sides in the window of each roll stand stand and the roll chocks on both sides on an upper or respectively vertically guided guide block the lower lifting housing is supported in a horizontally sliding manner and the roll bending forces are transmitted from bending cylinders to the roll chocks.
  • a bending and balancing device of the type mentioned is known from DE-OS 36 27 690.
  • this bending and balancing device two bending cylinders act on each lifting housing that horizontally guides the roller chocks, which are arranged such that the respective upper lifting housing receives the cylinder piston, while the piston rod is connected to the lower lifting housing.
  • the cylinder pistons arranged in the upper lifting housing are pressurized on the outside of the piston, as a result of which compressive forces are exerted on the piston rods act on the lower lift housing.
  • upward forces are transmitted from the upper lift case to the slide surfaces of the chocks, and downward forces are transmitted from the lower lift case to the slide surfaces of the lower slide.
  • the arrangement of the lifting housing and bending cylinder can be easily replaced for maintenance purposes, which means that shorter downtimes of the roll stand can be achieved; this applies all the more if the hydraulic device for axial work roll displacement is also connected to the lifting housing.
  • a four-high rolling stand in which the chocks engage positively and non-positively in a horizontal guide groove of lifting housings, in which bending cylinders are arranged, which in turn are supported on the stand.
  • a tensioning cylinder is also arranged in a lifting housing, which is operatively connected to the bending cylinder and whose piston shaft is also supported on the scaffolding stand.
  • the object of the present invention is to improve the known bending and balancing device and to apply pressure forces to each individual lifting housing as separately as possible in order to be able to influence the roll bending even better and to be able to adjust the balancing of the rolls with the chocks even more precisely in order to be able to do so to avoid uncontrolled forces and moments on the highly loaded roller bearings.
  • At least one preferably hydraulically acting bending cylinder acts on each upper and lower lifting housing and is supported on the guide block fixed to the stand, the guide block in its central region having a web projecting into the stand window of the roll stand, on its upper and lower Web surface of the bending cylinder is supported and wherein the lifting housing for supporting the roll chock has an upper shoulder, in which the slide for the horizontal support surface of the roll chock is embedded such that the center of the bending cylinder and the center of the support surface lie in a vertical plane.
  • the bending forces advantageously act on each individual lifting housing and thus separately on the chocks of the upper and lower work rolls. Reactions of the bending forces as a result of reaction forces on the upper and lower work roll are avoided, since the reaction forces are absorbed by the roll stands. As a result, the bending forces can be applied to each individual roller more precisely and more effectively.
  • the support on the web surfaces of the guide block enables good guidance during the vertical movement of the lifting housing; due to the perfect guidance of the lifting housing, an excellent sealing of the housing against sinter, dust or other harmful influences from the rolling mill operation is guaranteed; In particular, the alignment of the bending cylinder and the support surface in a vertical plane avoids additional frictional forces on the support surfaces, since no moment can occur between the support of the work roll chocks and the bending cylinder.
  • An embodiment of the invention is characterized in that the bending cylinder is arranged at least partially in the lifting housing, the cylinder piston being guided in a corresponding bore in the lifting housing and the piston shaft being connected to the web of the guide block.
  • Another embodiment of the invention is concerned with the measure that the guide block has a central projection adapted to the vertical extent of the lifting housing, which engages in a correspondingly designed recess in the central lifting housing and that at least on the vertical contact surfaces of the lifting housing with the guide block and the roller chock partially sliding surfaces are arranged. This ensures that each lifting housing is as long as possible on the guide block is guided in the middle, the frictional forces counteracting the displacement being limited to the design-related minimum dimension.
  • a device for axially displacing the rolls, in particular the work rolls is connected to the lifting housing and is connected to the roll chock with the aid of at least one driver element.
  • the work rolls 1, 2 are mounted in chocks 4, 5 in the stand 3 of the roll stand (not shown); the upper work roll 1 in the upper roll chock 4 and the lower work roll 2 in the lower roll chock 5.
  • Each roll chock is slid horizontally on both sides on the shoulder 9 of a lift housing 6, 7.
  • the roller chock is provided with a support surface 8 and a slide 10 is embedded in the load-bearing shoulder 9 of the lifting housing.
  • the lifting housing 6, 7 is guided in a vertically sliding manner on a common guide block 11.
  • the guide block 11 is firmly connected to the roll stand.
  • the guide block has a central projection 12 which is approximately matched to the vertical extent of the lifting housing 6, 7 and which engages in a correspondingly designed recess 13 in the central longitudinal region of the lifting housing.
  • the vertical contact surfaces of the lifting housing with the guide block 11 and the roller chock 4, 5 are provided with the sliding surfaces 14, 15 (FIG. 2).
  • the bending and balancing cylinders 16, 17 are in the Lift housing 6, 7 arranged such that the cylinder piston 18 is guided in a corresponding bore 19 in the lifting housing and that the piston shaft 20 is supported on a web 21 of the guide block 11 which projects into the stator window 28.
  • Fig. 2 shows a partial section of the scaffold stand 3, not shown, with which the guide block 11 is firmly connected.
  • the central projection 12 of the guide block, which engages in the corresponding recess 13 of the upper lifting housing 6, is clearly recognizable.
  • the bores 19 shown in dashed lines for receiving the cylinder pistons 18 of the bending cylinders 16 can be seen in the lifting housing.
  • the vertical contact surfaces of the lifting housing to the guide block 11 and to the roller chock 4 contain the sliding surfaces 14, 15.
  • a device 24 for axially displacing the work roller 1 is connected to the lifting housing 6 and is connected to the roller chock 4 by means of a driver element 25.
  • the driver element consists, for example, of two pinions 26 which are mounted on the one hand on the thrust housing 27 of the displacement device and on the other hand mesh with a toothed rack (not shown in more detail) which is arranged on the roller chock 4.
  • the bending cylinders 16, 17 arranged in the lifting housings 6, 7 are pressurized on the outside of the piston with a hydraulic medium, each bending cylinder being supported on the upper web surface 22 and the lower web surface 23 of the guide block 11 fixed to the stand.
  • the pressure forces generated are transferred from the bending cylinder to the lifting housing transferred and passed from there into the roll chocks 4, 5.
  • each lifting housing has its own bending cylinder, which is supported separately on the guide block 11, it is possible to apply exactly predetermined bending forces to each lifting housing and thus into each side of the roll chock or to ensure a balanced balance of the roll chocks, so that predetermined bending forces ensure the desired preload of the work rolls and, on the other hand, adverse moments on the roll bearings are avoided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Press Drives And Press Lines (AREA)
  • Presses And Accessory Devices Thereof (AREA)
  • Warping, Beaming, Or Leasing (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Claims (4)

  1. Dispositif pour plier et balancer des cylindres (1,2) décalables axialement d'une cage de laminoir, notamment les cylindres de travail d'une cage quarto, dans lequel la fenêtre des chaque montant (3) de cage comporte, des deux côtés, un bloc de guidage (11) solidaire du montant et dans lequel les empoises (4, 5) des cylindres prennent appui des des côtés, de manière à pouvoir glisser horizontalement, sur une enveloppe de levage supérieure ou inférieure guidée verticalement dans le bloc de guidage (11), les efforts de flexion des vérins de cintrage (16, 17) étant transmis aux empoises (4, 5) des cylindres, caractérisé en ce que chacune des enveloppes de levage (6, 7) supérieure ou inférieure est soumise à l'action d'au moins un vérin de cintrage, de préférence hydraulique, qui prend appui sur le bloc de guidage (11) solidaire du montant, ce bloc de guidage (11) comportant, dans la zone médiane, une partie saillante (21) qui s'engage en porte-à-faux dans la fenètre (28) du montant (3) de la cage de laminoir et dont les surfaces supérieure et inférieure (22,  23) servent d'appui au vérin de cintrage (16, 17), l'enveloppe de levage (6, 7) comportant, pour l'appui de l'empoise (4, 5) du cylindre, une partie supérieure (9) dans laquelle la pièce de glissement (10) associée à la surface d'appui horizontale (8) de l'empoise (4,  5) du cylindre pénètre de telle manière que le milieu du vérin de cintrage (16, 17) et le milieu de la surface d'appui (8) se trouvent dans un même plan vertical.
  2. Dispositif pour plier et balancer des cylindres selon la revendication 1, caractérisé en ce que le vérin de cintrage (16, 17) est situé au moins en partie dans l'enveloppe de levage (6, 7), le piston (18) du vérin étant guidé dans un alésage correspondant (19) de l'enveloppe de levage (6, 7) et la tige de piston (20) étant reliée à la partie saillante (21) du bloc de guidage (11).
  3. Dispositif pour plier et balancer des cylindres selon l'une des revendications 1 ou 2, caractérisé en ce que le bloc de guidage (11) comporte une partie saillante médiane (12) qui est adaptée à l'extension verticale de l'enveloppe de levage (6, 7) et qui est prise dans un évidement de forme correspondante (13) ménagé dans la zone médiane de l'enveloppe de levage et en ce qu'au niveau des surfaces de contact verticales de l'enveloppe de levage (6, 7) avec le bloc de guidage (11) et l'empoise (4, 5) du cylindre le dispositif comporte au moins en partie des surfaces de glissement (14, 15).
  4. Dispositif pour plier et balancer des cylindres selon au moins une des revendications 1 à 3, caractérisé en ce que l'enveloppe de levage (6, 7) est reliée au dispositif (24) qui assure le déplacement axial des cylindes (1, 2), notamment des cylindres de travail, et qui, à l'aide d'au moins d'un élément d'entraînement (25), est relié à l'empoise (4, 5) des cylindres.
EP89106674A 1988-05-06 1989-04-14 Dispositif pour plier et balancer des cylindres décalables axialement d'une cage de laminoir Expired - Lifetime EP0340504B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89106674T ATE85912T1 (de) 1988-05-06 1989-04-14 Biege- und ausbalanciervorrichtung fuer axial verschiebbare walzen eines walzgeruestes.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3815454 1988-05-06
DE3815454A DE3815454A1 (de) 1988-05-06 1988-05-06 Biege- und ausbalanciervorrichtung fuer axial verschiebbare walzen eines walzgeruestes

Publications (3)

Publication Number Publication Date
EP0340504A2 EP0340504A2 (fr) 1989-11-08
EP0340504A3 EP0340504A3 (en) 1990-06-06
EP0340504B1 true EP0340504B1 (fr) 1993-02-24

Family

ID=6353777

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89106674A Expired - Lifetime EP0340504B1 (fr) 1988-05-06 1989-04-14 Dispositif pour plier et balancer des cylindres décalables axialement d'une cage de laminoir

Country Status (5)

Country Link
US (1) US4967582A (fr)
EP (1) EP0340504B1 (fr)
AT (1) ATE85912T1 (fr)
DE (2) DE3815454A1 (fr)
ES (1) ES2038798T3 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4034436A1 (de) * 1990-10-29 1992-04-30 Schloemann Siemag Ag Walzgeruest mit anordnung zur distanzierten abstuetzung der oberen arbeitswalze
DE4244524A1 (de) * 1992-12-30 1994-07-07 Schloemann Siemag Ag Anstellvorrichtung für die Bürstenwalze in einem Walzgerüst
DE4314472A1 (de) * 1993-05-03 1994-11-10 Schloemann Siemag Ag Biegeblock zum Biegen der Walzen von Mehrwalzen-Walzgerüsten
US5524470A (en) * 1994-03-24 1996-06-11 Italimplanti Of America, Inc. Plug mill bottom roll adjustment
FR2733171B1 (fr) * 1995-04-19 1997-07-04 Clecim Sa Laminoir a grande ouverture
DE10334682A1 (de) * 2003-07-30 2005-02-17 Sms Demag Ag Walzvorrichtung
EP1772203A1 (fr) * 2005-10-10 2007-04-11 VAI Industries (UK) Limited Dispositif pour le cintrage de cylindres
DE102008035702A1 (de) * 2008-07-30 2010-02-04 Sms Siemag Aktiengesellschaft Walzvorrichtung
DE102008049179A1 (de) 2008-09-26 2010-04-01 Sms Siemag Aktiengesellschaft Walzvorrichtung
DE102009058876A1 (de) * 2009-01-23 2010-07-29 Sms Siemag Ag Biege- und Ausbalanciervorrichtung für axial verschiebbare Arbeitswalzen eines Walzgerüstes
DE102009060641A1 (de) * 2009-07-07 2011-01-13 Sms Siemag Ag Vorrichtung zur Arretierung des Einbaustückes und des Axiallagergehäuse eines Walzensatzes sowie des Walzenwechselwagen
US9120134B2 (en) * 2011-10-26 2015-09-01 I2S, Llc Methods of shifting and bending rolls in a rolling mill
ITMI20120598A1 (it) * 2012-04-12 2013-10-13 Danieli Off Mecc Sistema integrato di piegatura e di bilanciamento per gabbie di laminazione
CN103801561B (zh) * 2014-01-18 2016-04-20 肇庆宏旺金属实业有限公司 工作辊定位装置
IT201900000713A1 (it) * 2019-01-17 2020-07-17 Danieli Off Mecc Sistema di bending e shifting per gabbie di laminazione
CN111054760B (zh) * 2019-12-09 2021-11-23 安徽工业大学 一种轧机抑振装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0512385B2 (fr) * 1985-10-25 1993-02-17 Sekisui Plastics

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1289811B (de) * 1963-07-29 1969-02-27 Achenbach Soehne Gmbh Einrichtung zum Ausbalancieren und Durchbiegen der Arbeitswalzen eines Quartogeruestes
DE2027350A1 (de) * 1970-06-04 1971-12-16 Achenbach Buschhutten GmbH, 5910 Kreuz tal Vorrichtung zum Auswechseln der Arbeits walzen und deren Einbaustucke in Walzge rüsten
DE3261730D1 (en) * 1981-02-28 1985-02-14 Schloemann Siemag Ag Roll stand
BR8300010A (pt) * 1982-01-06 1983-08-30 Hitachi Ltd Laminador
JPS59191507A (ja) * 1983-04-15 1984-10-30 Hitachi Ltd 圧延機
JPS61129208A (ja) * 1984-11-28 1986-06-17 Hitachi Ltd 圧延機のロ−ル軸受箱クランプ装置
FR2594359B1 (fr) * 1986-02-14 1988-06-10 Clecim Sa Procede de reglage du profil de cylindres deplacables dans un laminoir et laminoir perfectionne pour la mise en oeuvre du procede
DE3627692A1 (de) * 1986-08-14 1988-02-25 Schloemann Siemag Ag Biege- und ausbalanciervorrichtung fuer axial verschiebbare arbeitswalzen eines quartowalzgeruestes
DE3627690A1 (de) * 1986-08-14 1988-02-25 Schloemann Siemag Ag Biege- und ausbalanciervorrichtung fuer axial verschiebbare arbeitswalzen eines quartowalzgeruestes

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0512385B2 (fr) * 1985-10-25 1993-02-17 Sekisui Plastics

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1o. no.320 (M-530)(2376), 30 October01986 ; & JP-A-61129208 (HITACHI). *

Also Published As

Publication number Publication date
EP0340504A2 (fr) 1989-11-08
ATE85912T1 (de) 1993-03-15
DE3815454A1 (de) 1989-11-16
DE58903588D1 (de) 1993-04-01
EP0340504A3 (en) 1990-06-06
ES2038798T3 (es) 1993-08-01
US4967582A (en) 1990-11-06

Similar Documents

Publication Publication Date Title
EP0340504B1 (fr) Dispositif pour plier et balancer des cylindres décalables axialement d'une cage de laminoir
EP0235332B1 (fr) Cage de laminoir
EP2342026B1 (fr) Dispositif de laminage
DE4215807C2 (de) Rohrbiegepresse
EP1436104B1 (fr) Dispositif de laminage
EP1181114B1 (fr) Dispositif de pliage pour les cylindres de travail d'une cage de laminoir a chaud
DE3627692A1 (de) Biege- und ausbalanciervorrichtung fuer axial verschiebbare arbeitswalzen eines quartowalzgeruestes
DE10116988A1 (de) Walzgerüst
DE3113753C2 (de) Dreiwalzenbiegemaschine für Blech
DE1427788C3 (de) Quartoreversierwalzwerk
EP0768125B1 (fr) Dispositif de guidage pour une cage de laminoir à quatre cylindres ou plus
DE2138894A1 (de) Walzgeruest mit arbeits- und stuetzwalzen, insbesondere quartowalzgeruest zum walzen von grobblechen
AT390741B (de) Walzwerk, insbesondere kaltwalzwerk
EP4096849B1 (fr) Dispositif de laminage
DE3811875A1 (de) Fuehrungsvorrichtung
WO2002002254A1 (fr) Cage de laminoir, en particulier cage duo ou quarto de laminoir, comportant des dispositifs de flexion et d"equilibrage pour des cylindres pouvant coulisser axialement
EP0484781B1 (fr) Presse à refouler de brames pour laminoirs à chaud à larges bandes
EP3930934B1 (fr) Cage de laminoir pour le laminage de matériaux métalliques
DE1270519C2 (de) Vorrichtung zur Balligkeitssteuerung der Stuetzwalzen in einem Mehrwalzengeruest
DE2129376A1 (de) Walzwerk
DE4447382C2 (de) Walzgerüst zum Walzen von Blechen und Bändern
DE3807628C2 (de) Walzgerüst mit Verschiebeeinrichtung
DE1936769A1 (de) Vorrichtung zur Balligkeitssteuerung der Arbeitswalzen in einem Duo-Metallwalzwerk
DE2245831C3 (de) Walzgerüst für ein Blechwalzwerk
DE2231719C3 (de) Walzgerüst für Rohrkaltwalzwerke

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

17P Request for examination filed

Effective date: 19890502

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE DE ES FR GB IT

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 DE ES FR GB IT

17Q First examination report despatched

Effective date: 19910531

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE DE ES FR GB IT

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

Ref country code: GB

Effective date: 19930224

REF Corresponds to:

Ref document number: 85912

Country of ref document: AT

Date of ref document: 19930315

Kind code of ref document: T

REF Corresponds to:

Ref document number: 58903588

Country of ref document: DE

Date of ref document: 19930401

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

Ref country code: AT

Effective date: 19930414

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 NON-PAYMENT OF DUE FEES

Effective date: 19930415

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

Ref country code: FR

Payment date: 19930421

Year of fee payment: 5

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

Ref country code: BE

Payment date: 19930430

Year of fee payment: 5

ITF It: translation for a ep patent filed

Owner name: STUDIO JAUMANN

ET Fr: translation filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2038798

Country of ref document: ES

Kind code of ref document: T3

GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 19930224

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: BE

Effective date: 19940430

BERE Be: lapsed

Owner name: SCHLOEMANN-SIEMAG A.G. SMS

Effective date: 19940430

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

Ref country code: FR

Effective date: 19941229

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 19990405

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

Ref country code: DE

Payment date: 20030331

Year of fee payment: 15

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: 20041103

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

Effective date: 20050414