EP0976465A1 - Verfahren und system zum Steuern eines Ziehverfahrens durch Volumenmessung - Google Patents

Verfahren und system zum Steuern eines Ziehverfahrens durch Volumenmessung Download PDF

Info

Publication number
EP0976465A1
EP0976465A1 EP98113975A EP98113975A EP0976465A1 EP 0976465 A1 EP0976465 A1 EP 0976465A1 EP 98113975 A EP98113975 A EP 98113975A EP 98113975 A EP98113975 A EP 98113975A EP 0976465 A1 EP0976465 A1 EP 0976465A1
Authority
EP
European Patent Office
Prior art keywords
capstan
section
upstream
reduction
piece
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.)
Granted
Application number
EP98113975A
Other languages
English (en)
French (fr)
Other versions
EP0976465B1 (de
Inventor
Sergio Piacentini
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.)
Team Meccanica Srl
Original Assignee
Team Meccanica Srl
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 Team Meccanica Srl filed Critical Team Meccanica Srl
Priority to DE69802675T priority Critical patent/DE69802675T2/de
Priority to ES98113975T priority patent/ES2168708T3/es
Priority to DK98113975T priority patent/DK0976465T3/da
Priority to EP98113975A priority patent/EP0976465B1/de
Priority to PT98113975T priority patent/PT976465E/pt
Priority to AT98113975T priority patent/ATE209540T1/de
Publication of EP0976465A1 publication Critical patent/EP0976465A1/de
Application granted granted Critical
Publication of EP0976465B1 publication Critical patent/EP0976465B1/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
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, wire, rods, tubes or like semi-manufactured products by drawing
    • B21C1/02—Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums
    • B21C1/12—Regulating or controlling speed of drawing drums, e.g. to influence tension; Drives; Stop or relief mechanisms

Definitions

  • the invention refers to systems and procedures for processing of material without removal of the same and involving a cross-sectional reduction.
  • reference will be made more in particular to a drawbench system.
  • a metal wire is reduced in diameter by passing through one or more consecutive die plates.
  • the metal wire is drawn through the die plates by tensile force applied by rollers or capstans set between the die plates, in particular after each die plate.
  • the last capstan downstream dictates what should be the speed of the capstan or capstans upstream.
  • the control of speed of the capstans is generally entrusted, in known systems, to a sensing device referred to as "dandy roll", which detects the slack in the wire at a location between one capstan and another.
  • the "dandy roll” device comprises a feeler, generally a roller feeler, which is pushed against the wire or sheet material of the drawing line (or generally reduced-cross section plastic processing line). By detecting the variation in position of the feeler, which depends upon the slack of the material, a correction is made in the speed of the capstan or capstans upstream according to the variation detected.
  • This type of regulation may present some drawbacks; for example, an instability of correction or hunting, which may even, in the case of wire, cause breaking of the wire.
  • An aim of the present invention is to overcome these drawbacks of the prior art.
  • a further aim is to achieve a system for controlling speed of the capstans in a material-processing line with reduction of cross section and without removal of material, in which there is an improved stability and/or in which it is possible to exploit a greater filling width of the capstans.
  • a volume per unit time of material undergoing processing is used as the control quantity to carry out regulation of capstan speed.
  • a volume of material per unit time that passes in a given point or location upstream of a capstan, the speed of which it is intended to control is measured, and the volume per unit time that passes in a given point or location upstream of a reference capstan (set downstream of the capstan being controlled), and a comparison value or error signal thus obtained is used to regulate the rotational speed of the controlled capstan.
  • the regulation of the speed is obtained generally using a feedback control loop of the PID (proportional-integral-differential) type.
  • a drawing line or system is designated by the generic reference 10 and is illustrated as comprising a first die plate 12, upstream, a second die plate 14, downstream, a first capstan 16, downstream of the first die plate, and a second capstan 18, downstream of the second die plate.
  • Capstan 16 is upstream of capstan 18.
  • a wire being formed on the drawing line is indicated by the letter F.
  • F' is a larger-section wire entering die plate 12
  • F'' is a wire with intermediate cross-section between die plate 12 and die plate 14
  • F'''' is a reduced cross-section wire downstream of die plate 14.
  • the volume per unit time of wire F that passes through each of the said sections is monitored.
  • Reference 31 is a measuring apparatus in P 1
  • reference 32 is a measuring apparatus in P 2 .
  • the comparison is used to regulate the speed of motor 22 driving the capstan 16, preferably through a feedback loop control (not illustrated herein) of the PID type.
  • reference 20 is a differential error amplifier
  • reference 21 is a driving circuit for motor 22.
  • the volume V u passing per unit time in a given section may be measured in various ways.
  • a marking is provided at intervals along the wire, obtained by visual means (for example, paint marks sprayed on), or electrical means, such as magnetization.
  • the system illustrated in Fig. 1 is particularly suited for marking by paint-spraying, the paint being applied at a location M upstream of the die plate 12.
  • a marking is also obtained, at different regular intervals, of the wire F'' upstream of the die plate 14.
  • Counting the number of stretches of wire passing per unit time at location P 1 and the number of stretches of wire passing per unit time at location P 2 gives the values of volume per unit time V u1 and V u2 .
  • Counting can be done using known means; for example, 31 and 32 may be counters of electric pulses coming from optical (or magnetic) sensors which detect the passage of the marks (stored in memory) on the wire.
  • Fig. 1 is particularly suitable when there is a paint-type marking.
  • Figure 2 illustrates a system tat is particularly suited for operating with a magnetic-type marking.
  • marking is made at a location M downstream of the first die plate 12, and the first reading of volume per unit time is made at a location P 1 downstream of the first die plate and of the marking, and upstream of the first capstan 16.
  • the location P 2 of the second reading of unit volume is set downstream of the controlled capstan 16, i.e., upstream of the die plate 14, as in the previous drawing line.
  • the marking and/or marking-detection devices As far as the application of the marking and/or marking-detection devices is concerned, it may be pointed out that it makes no difference whether they are set at the entry point or at the exit point of the die plates, provided that they are set in the immediate vicinity of the die plates. This possibility exists in so far as the volume of the material coming into the die plate is exactly the same as the outgoing material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Metal Extraction Processes (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Preparing Plates And Mask In Photomechanical Process (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
EP98113975A 1998-07-27 1998-07-27 Verfahren und System zum Steuern eines Ziehverfahrens durch Volumenmessung Expired - Lifetime EP0976465B1 (de)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DE69802675T DE69802675T2 (de) 1998-07-27 1998-07-27 Verfahren und System zum Steuern eines Ziehverfahrens durch Volumenmessung
ES98113975T ES2168708T3 (es) 1998-07-27 1998-07-27 Procedimiento de regulacion por control de volumen en el proceso de material en estado plastico, mediante reduccion de la seccion transversal y sistema para el mismo.
DK98113975T DK0976465T3 (da) 1998-07-27 1998-07-27 Fremgangsmåde og system til plastforarbejdning af materiale ved tværsnitsreduktion
EP98113975A EP0976465B1 (de) 1998-07-27 1998-07-27 Verfahren und System zum Steuern eines Ziehverfahrens durch Volumenmessung
PT98113975T PT976465E (pt) 1998-07-27 1998-07-27 Processo de regulacao de controlo de volume para processamento de material plastico por meio de reducao da seccao transversal e sistema para a sua execucao
AT98113975T ATE209540T1 (de) 1998-07-27 1998-07-27 Verfahren und system zum steuern eines ziehverfahrens durch volumenmessung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98113975A EP0976465B1 (de) 1998-07-27 1998-07-27 Verfahren und System zum Steuern eines Ziehverfahrens durch Volumenmessung

Publications (2)

Publication Number Publication Date
EP0976465A1 true EP0976465A1 (de) 2000-02-02
EP0976465B1 EP0976465B1 (de) 2001-11-28

Family

ID=8232348

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98113975A Expired - Lifetime EP0976465B1 (de) 1998-07-27 1998-07-27 Verfahren und System zum Steuern eines Ziehverfahrens durch Volumenmessung

Country Status (6)

Country Link
EP (1) EP0976465B1 (de)
AT (1) ATE209540T1 (de)
DE (1) DE69802675T2 (de)
DK (1) DK0976465T3 (de)
ES (1) ES2168708T3 (de)
PT (1) PT976465E (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007019289A1 (de) 2007-04-24 2008-10-30 Maschinenfabrik Niehoff Gmbh & Co. Kg Vorrichtung und Verfahren zum Ziehen von Draht
ITMI20101043A1 (it) * 2010-06-10 2011-12-11 Trafilerie Brambilla S P A Metodo ed impianto per la produzione di barre di acciaio inossidabile e/o di leghe inossidabili trafilate a freddo.
CN114210750A (zh) * 2021-11-05 2022-03-22 浙江三行电气科技有限公司 自平衡式拉丝机

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1296207A (fr) * 1961-07-26 1962-06-15 Davy & United Eng Co Ltd Procédé et appareil pour la mesure de l'allongement des feuillards et similaires
US3688532A (en) * 1970-11-24 1972-09-05 Antonio Vicente Silva Control system for tandem rolling mill based on the constant volume principle
JPS5311057A (en) * 1976-07-19 1978-02-01 Nippon Steel Corp Wire diameter measuring method and apparatus of drawing wire
DE3009779A1 (de) * 1979-05-10 1980-11-20 Thaelmann Schwermaschbau Veb Verfahren zur antriebsregelung fuer geradeausziehmaschinen
JPS5653817A (en) * 1979-10-08 1981-05-13 Toshiba Corp Multistage wire drawing method
JPS61159217A (ja) * 1984-12-29 1986-07-18 Asahi Chem Ind Co Ltd 線材の高速伸線設備
EP0524351A1 (de) * 1991-07-22 1993-01-27 N.V. Bekaert S.A. Drahtziehmaschine mit System zum Prüfen des Durchmessers

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1296207A (fr) * 1961-07-26 1962-06-15 Davy & United Eng Co Ltd Procédé et appareil pour la mesure de l'allongement des feuillards et similaires
US3688532A (en) * 1970-11-24 1972-09-05 Antonio Vicente Silva Control system for tandem rolling mill based on the constant volume principle
JPS5311057A (en) * 1976-07-19 1978-02-01 Nippon Steel Corp Wire diameter measuring method and apparatus of drawing wire
DE3009779A1 (de) * 1979-05-10 1980-11-20 Thaelmann Schwermaschbau Veb Verfahren zur antriebsregelung fuer geradeausziehmaschinen
JPS5653817A (en) * 1979-10-08 1981-05-13 Toshiba Corp Multistage wire drawing method
JPS61159217A (ja) * 1984-12-29 1986-07-18 Asahi Chem Ind Co Ltd 線材の高速伸線設備
EP0524351A1 (de) * 1991-07-22 1993-01-27 N.V. Bekaert S.A. Drahtziehmaschine mit System zum Prüfen des Durchmessers

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 002, no. 049 (E - 025) 6 April 1978 (1978-04-06) *
PATENT ABSTRACTS OF JAPAN vol. 005, no. 112 (M - 079) 21 July 1981 (1981-07-21) *
PATENT ABSTRACTS OF JAPAN vol. 010, no. 365 (M - 542) 6 December 1986 (1986-12-06) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007019289A1 (de) 2007-04-24 2008-10-30 Maschinenfabrik Niehoff Gmbh & Co. Kg Vorrichtung und Verfahren zum Ziehen von Draht
ITMI20101043A1 (it) * 2010-06-10 2011-12-11 Trafilerie Brambilla S P A Metodo ed impianto per la produzione di barre di acciaio inossidabile e/o di leghe inossidabili trafilate a freddo.
CN114210750A (zh) * 2021-11-05 2022-03-22 浙江三行电气科技有限公司 自平衡式拉丝机
CN114210750B (zh) * 2021-11-05 2024-02-09 浙江三行电气科技有限公司 自平衡式拉丝机

Also Published As

Publication number Publication date
EP0976465B1 (de) 2001-11-28
ATE209540T1 (de) 2001-12-15
DE69802675D1 (de) 2002-01-10
DE69802675T2 (de) 2002-09-12
PT976465E (pt) 2002-05-31
ES2168708T3 (es) 2002-06-16
DK0976465T3 (da) 2002-03-25

Similar Documents

Publication Publication Date Title
EP2218669B1 (de) Bahnträger, bahntragverfahren und bahnwagensteuerprogramm
CN108975041B (zh) 卷材收卷张力实时检测调节系统
US3568904A (en) Sample data web and strip guide control system
KR101203346B1 (ko) 위치 센서를 이용한 웨브 장력의 실시간 결정 및 제어
SE467665B (sv) Foerfarande och anordning foer bestaemning och reglering av toejningen i en loepande bana
WO2015101174A1 (zh) 纸币暂存模块和其卷筒转速控制方法以及自动柜员机
EP0976465A1 (de) Verfahren und system zum Steuern eines Ziehverfahrens durch Volumenmessung
RU2208489C2 (ru) Способ регулирования скорости вращения управляемого барабана на основании скорости вращения опорного барабана в системе непрерывной обработки материала давлением путем уменьшения поперечного сечения, система обработки материала давлением путем уменьшения поперечного сечения
US9289971B2 (en) System and method for measuring untensioned product length of a web during production
EP2801479B1 (de) Geschlossener Regelkreis für ungespannte Produktlänge auf einer Rollenmaschine
JP3320974B2 (ja) 可逆式圧延機の板厚制御装置
JP2000051925A (ja) 材料の断面積を減少させる塑性処理の体積コントロール調整方法および塑性処理システム
KR20000010122A (ko) 단면축소에 의한 재료의 가소성 처리를 위한 체적제어 조정방법및 그 시스템
JPH08122046A (ja) 連続伸線機のダイス径測定方法およびダイス径測定装置
JP2503822B2 (ja) 走行ウェブ制御装置
JP2010058149A (ja) 金属帯巻取り張力の低下検出方法および装置
JPS629711A (ja) 薄板熱間圧延ラインの板幅制御方法
JP2560940B2 (ja) ウェブ追従制御装置
SU876226A1 (ru) Устройство дл управлени установкой направл ющих линеек
JP3586374B2 (ja) 板厚制御装置
JPS62124011A (ja) 自動板厚制御装置
KR20220051849A (ko) 탠덤 냉간 압연기의 제어 시스템
JP2024007528A (ja) ミルスリップ防止方法、金属板圧延方法、金属板製造方法、ミルスリップ防止装置及び金属板圧延装置
ITMI971427A1 (it) Regolazione a controllo di volume per processi di lavorazione plastica di materiale mediante riduzione di sezione e impianto
JPH09278240A (ja) 巻出または巻取ロールの初期径を求める方法および装置

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 DK ES FI FR GB GR IE IT LI LU NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20000512

AKX Designation fees paid

Free format text: AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE

17Q First examination report despatched

Effective date: 20001208

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

RTI1 Title (correction)

Free format text: A VOLUME-CONTROL REGULATION PROCEDURE FOR PLASTIC PROCESSING OF MATERIAL BY CROSS-SECTIONAL REDUCTION, AND SYSTEM THEREFOR.

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

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 DK ES FI FR GB GR IE IT LI LU NL PT SE

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;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.SCRIBED TIME-LIMIT

Effective date: 20011128

REF Corresponds to:

Ref document number: 209540

Country of ref document: AT

Date of ref document: 20011215

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

REF Corresponds to:

Ref document number: 69802675

Country of ref document: DE

Date of ref document: 20020110

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: A. BRAUN, BRAUN, HERITIER, ESCHMANN AG PATENTANWAE

REG Reference to a national code

Ref country code: DK

Ref legal event code: 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: 20020215

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2168708

Country of ref document: ES

Kind code of ref document: T3

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

Ref country code: PT

Payment date: 20020705

Year of fee payment: 5

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

Ref country code: ES

Payment date: 20020709

Year of fee payment: 5

Ref country code: IE

Payment date: 20020709

Year of fee payment: 5

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

Ref country code: GR

Payment date: 20020710

Year of fee payment: 5

Ref country code: FI

Payment date: 20020710

Year of fee payment: 5

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

Ref country code: FR

Payment date: 20020715

Year of fee payment: 5

Ref country code: SE

Payment date: 20020715

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: 20020718

Year of fee payment: 5

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

Ref country code: GB

Payment date: 20020724

Year of fee payment: 5

Ref country code: NL

Payment date: 20020724

Year of fee payment: 5

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

Ref country code: CH

Payment date: 20020725

Year of fee payment: 5

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

Ref country code: AT

Payment date: 20020729

Year of fee payment: 5

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

Ref country code: LU

Payment date: 20020730

Year of fee payment: 5

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

Ref country code: DK

Payment date: 20020731

Year of fee payment: 5

REG Reference to a national code

Ref country code: GR

Ref legal event code: EP

Ref document number: 20020400824

Country of ref document: GR

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

Ref country code: DE

Payment date: 20020829

Year of fee payment: 5

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: LU

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

Effective date: 20030727

Ref country code: GB

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

Effective date: 20030727

Ref country code: FI

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

Effective date: 20030727

Ref country code: AT

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

Effective date: 20030727

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: 20030728

Ref country code: IE

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

Effective date: 20030728

Ref country code: ES

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

Effective date: 20030728

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: 20030731

Ref country code: DK

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

Effective date: 20030731

Ref country code: CH

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

Effective date: 20030731

Ref country code: BE

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

Effective date: 20030731

BERE Be: lapsed

Owner name: *TEAM MECCANICA S.R.L.

Effective date: 20030731

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: 20040131

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: 20040201

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: 20040203

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

Ref country code: GR

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

Effective date: 20040205

EUG Se: european patent has lapsed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Effective date: 20030727

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

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: 20040331

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

Effective date: 20040201

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Ref country code: PT

Ref legal event code: MM4A

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

Effective date: 20040131

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20030728