EP0101846A2 - Verfahren und Vorrichtung zum Steuern der Bewegung einer Einfülleitung und deren Anwendung für eine Beladevorrichtung eines Schachtofens - Google Patents

Verfahren und Vorrichtung zum Steuern der Bewegung einer Einfülleitung und deren Anwendung für eine Beladevorrichtung eines Schachtofens Download PDF

Info

Publication number
EP0101846A2
EP0101846A2 EP83106698A EP83106698A EP0101846A2 EP 0101846 A2 EP0101846 A2 EP 0101846A2 EP 83106698 A EP83106698 A EP 83106698A EP 83106698 A EP83106698 A EP 83106698A EP 0101846 A2 EP0101846 A2 EP 0101846A2
Authority
EP
European Patent Office
Prior art keywords
angular
chute
angular speed
speed
movement
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
EP83106698A
Other languages
English (en)
French (fr)
Other versions
EP0101846B1 (de
EP0101846A3 (en
Inventor
Edouard Legille
Guy Thillen
Emile Lonardi
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.)
Paul Wurth SA
Original Assignee
Paul Wurth SA
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 Paul Wurth SA filed Critical Paul Wurth SA
Priority to AT83106698T priority Critical patent/ATE22723T1/de
Publication of EP0101846A2 publication Critical patent/EP0101846A2/de
Publication of EP0101846A3 publication Critical patent/EP0101846A3/fr
Application granted granted Critical
Publication of EP0101846B1 publication Critical patent/EP0101846B1/de
Expired legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/18—Bell-and-hopper arrangements
    • C21B7/20—Bell-and-hopper arrangements with appliances for distributing the burden
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B1/00—Shaft or like vertical or substantially vertical furnaces
    • F27B1/10—Details, accessories or equipment specially adapted for furnaces of these types
    • F27B1/20—Arrangements of devices for charging
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/10—Charging directly from hoppers or shoots
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D19/00—Arrangements of controlling devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D2003/0001—Positioning the charge
    • F27D2003/0006—Particulate materials
    • F27D2003/0007—Circular distribution

Definitions

  • the present invention relates to a method of controlling the movement of an oscillating chute which can pivot around two orthogonal axes and actuated, for this purpose, by two drive means independent of each other to move the end of the chute following concentric circles or a spiral around a vertical axis.
  • the invention also relates to a device for implementing this method as well as an installation for loading a shaft furnace equipped with such a device and implementing this method.
  • the object of the present invention is to provide a new method for controlling the movement of an oscillating chute making it possible to eliminate, if not to attenuate, this irregularity by compensation.
  • An auxiliary object of the invention is to provide a device for the implementation, as well as its application to a loading installation of a shaft furnace.
  • the invention provides a method of controlling the movement of the chute, which is characterized in that the angular speed of rotation of the chute is modified around the vertical axis as a function of the angular position of the chute.
  • the angular positions of the chute in which the pivots which cause the deposit irregularities occur can be determined experimentally or by calculation. Knowing these angular positions, the invention therefore proposes to increase the angular speed of rotation of the chute at the places where the thickness of the deposited layer tends to increase, and to reduce the angular speed where the thickness has tendency to decrease.
  • the angular speed of the chute movement is regulated according to a preferred embodiment, according to the formula
  • the procedure is as follows by iteration:
  • FIGs 1 and 2 show an oscillating distribution chute 10 in a well-defined angular position, in which it occupies an inclination A (see Figure 2) relative to a vertical axis 0 and an angular position r ( Figure 1) relative to a horizontal reference axis, for example, the X axis.
  • the chute, in this inclination ⁇ is animated by a gyratory movement, in the clockwise direction, around the axis 0 with a angular speed ⁇ for annular deposition of the loading material on the melting bed, the relation being therefore
  • the reference 12 designates an annular deposit of material when the chute 10 rotates around the axis 0 with an inclination ⁇ .
  • the reference 14 designates the horizontal projection of the circular path of the lower end of the chute 10.
  • This loading material spilled by the gou monkfish therefore has a fall trajectory 16 with a vertical component and an angular component due to ⁇ .
  • the loading material does not fall to the point targeted by the chute at the precise moment when the material leaves this chute. This is illustrated in Figure 1.
  • This angular offset ⁇ is not only a function of the particle size of the material, but also of its falling speed, that is to say that depending on its falling speed, the particle reaches faster or slower the melting bed and its drop point will be located before or beyond the position ⁇ .
  • the offset ⁇ decreases up to, for example ⁇ - ⁇ , which tends to cause an increase in the thickness of the deposit at a location being offset by an angle ⁇ - ⁇ from the position angular of the chute where this pivoting occurred.
  • the offset ⁇ becomes ⁇ + ⁇ , which causes a decrease in the thickness of the deposit of the material. This slowdown occurs at the end of the pivotal phase ment and the reduction in thickness is, therefore, offset by an angle / ⁇ + ⁇ from the angular position in which the pivoting of the chute ends.
  • FIG. 3 shows, in polar coordinates, the thickness of an annular layer of material poured onto the fusion bed, this thickness being proportional to their distance to the origin.
  • the curve e m represents the optimum average thickness that can be calculated for example from the content of a storage tank and the surface area of the melting bed. This thickness being uniform, the curve representing e m is necessarily a circle.
  • the curve represented by e r is the actual thickness of a layer deposited by an oscillating chute animated by a gyratory movement at constant angular speed ⁇ o and affected by the irregularities described above.
  • the thickness for each angular position ⁇ is represented by the length of the vector e.
  • the curve e r whose outline has been deliberately exaggerated, allows two positions of maximum thickness to be recognized at the points E r-max located at the angular positions of 0 ° and 180 °, as well as two positions with minimum thickness at the points E r- min located respectively at the angular positions of 90 ° and 270 °.
  • Figure 4 is a polar diagram similar to that of Figure 3, but for the representation of the angular velocities ⁇ .
  • ⁇ o is the constant angular velocity for the deposition of the real irregular layer e r of FIG. 3.
  • the curve ⁇ is a curve of compensated speeds obtained by the modification of the curve ⁇ o according to the formula
  • the angular velocity for each angular position ⁇ is represented by the length ⁇ .
  • the purpose of the angular speed compensation is that the phenomena due to the pivoting of the chute and those due to the variation of the angular speed compensate each other to obtain a uniform deposited layer.
  • the curve e c in FIG. 3 corresponds to the curve ⁇ c in FIG. 3, that is to say the thickness of the layer deposited by modifying the angular speed according to the formula. above.
  • the curve e is of course offset by an angle ⁇ relative to the curve ⁇ c to take account of the fall time.
  • this angular speed compensation according to FIG. 4 is that the layer e r is modified so as to produce a curve e approaching the ideal circular curve e, that is to say by causing m chute faster at the angular positions corresponding to increases in the thickness of the deposit along the curve e r and more slowly at the angular positions corresponding to smaller thicknesses of the deposit in the curve e r , there is a tendency to reduce the irregularities in thickness of the deposited layer.
  • the compensated thickness approaches the ideal uniform thickness e.
  • ⁇ 1 , ⁇ 2 , ... is carried out either by tests or by calculation, because the parameters involved in this determination can be measured or calculated.
  • the compensated angular velocities ⁇ 1 , ⁇ 2 , ... can be determined for different inclinations and for different grain sizes.
  • compensated angular speed can be stored in a microcomputer which can calculate, at any time, by linear interpolations the exact value of the compensated angular speed of the chute.
  • FIG. 5 represents a block diagram of an embodiment of a control circuit for the compensation of the angular speed of the chute.
  • the microcomputer of which question above, is represented by the reference 10. This microcomputer receives information concerning the inclination ⁇ and the nature of the loading material for the calculation of the compensated angular velocities.
  • a motor 12 for driving the chute is subject to the control signals of an angular speed variator 14 comprising, inter alia, a comparator integrated.
  • Reference 16 designates the mechanical part of a pulse transmitter
  • references 18 and 20 respectively designate an angular speed detector and a position detector, these two detectors can however be combined, since
  • the angular speed detector 18 generates at each instant signals corresponding to the real speed 0 r and sends these signals to the variable speed drive 14. Likewise, the position detector generates, at every instant, signals corresponding to the angular position ⁇ of the distribution chute and sends these signals to the microcomputer 10.
  • This microcomputer 10 calculates, at each instant, on the basis of the information received, that is to say ⁇ , ⁇ and the parameters corresponding to the nature of the loading material, the compensated angular speed ⁇ c , thanks to the above formulas. Signals corresponding to the angular speed ⁇ c calculated by the microcomputer 10 are sent to the angular speed variator 14.
  • the integrated comparator thereof compares at all times the compensated angular speed ⁇ c with the actual angular speed ⁇ r from which it receives information from the detector 18 and, depending on the result of this comparison, the drive motor 12 will be accelerated or slowed down.
  • the method for correcting the angular speed of the chute is particularly suitable for a drive device of the kind proposed in the aforementioned Luxembourg patent application No. 83.280 because of the fact that the gyratory movement of this oscillating chute is caused by a circular motion drive device. It should however be noted that the correction device proposed is also suitable for other devices for driving an oscillating chute with cardan suspension, for example that driven by a pair of hydraulic cylinders.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Blast Furnaces (AREA)
  • Chutes (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Auxiliary Methods And Devices For Loading And Unloading (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Making Paper Articles (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Cartons (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Heat Treatment Of Articles (AREA)
  • Vehicle Body Suspensions (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Arc Welding In General (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Stacking Of Articles And Auxiliary Devices (AREA)
  • Jigging Conveyors (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
EP83106698A 1982-07-28 1983-07-08 Verfahren und Vorrichtung zum Steuern der Bewegung einer Einfülleitung und deren Anwendung für eine Beladevorrichtung eines Schachtofens Expired EP0101846B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83106698T ATE22723T1 (de) 1982-07-28 1983-07-08 Verfahren und vorrichtung zum steuern der bewegung einer einfuelleitung und deren anwendung fuer eine beladevorrichtung eines schachtofens.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU84303A LU84303A1 (fr) 1982-07-28 1982-07-28 Procede et dispositif de commande du mouvement d'une goulotte oscillante et application a une installation de chargement d'un four a cuve
LU84303 1982-07-28

Publications (3)

Publication Number Publication Date
EP0101846A2 true EP0101846A2 (de) 1984-03-07
EP0101846A3 EP0101846A3 (en) 1984-05-23
EP0101846B1 EP0101846B1 (de) 1986-10-08

Family

ID=19729928

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83106698A Expired EP0101846B1 (de) 1982-07-28 1983-07-08 Verfahren und Vorrichtung zum Steuern der Bewegung einer Einfülleitung und deren Anwendung für eine Beladevorrichtung eines Schachtofens

Country Status (17)

Country Link
US (1) US4575790A (de)
EP (1) EP0101846B1 (de)
JP (1) JPS5941405A (de)
KR (1) KR920006585B1 (de)
AT (1) ATE22723T1 (de)
AU (1) AU563801B2 (de)
BR (1) BR8304098A (de)
CA (1) CA1203308A (de)
CS (1) CS254321B2 (de)
DE (1) DE3366729D1 (de)
ES (1) ES8500663A1 (de)
IN (1) IN158936B (de)
LU (1) LU84303A1 (de)
PL (1) PL140295B1 (de)
SU (1) SU1143316A3 (de)
UA (1) UA7055A1 (de)
ZA (1) ZA835074B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989004446A1 (fr) * 1987-11-12 1989-05-18 Voest-Alpine Industrieanlagenbau Gesellschaft M.B. Agencement de transport de quantites dosees de matieres en vrac
CN101580886B (zh) * 2008-05-13 2010-09-22 中冶赛迪工程技术股份有限公司 一种散装物料布料器
EP1833999B2 (de) † 2004-11-26 2012-08-22 Siemens VAI Metals Technologies Ltd. Vorrichtung zur verteilung von material in einem ofen

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU86822A1 (fr) * 1987-03-24 1988-11-17 Wurth Paul Sa Procede et dispositif de correction de la trajectoire de chute dans une installation de chargement d'un four a cuve
JPH0541046Y2 (de) * 1988-06-07 1993-10-18
USD332955S (en) 1990-01-11 1993-02-02 Hull Herman E Pivotal chute
LU87938A1 (fr) * 1991-05-15 1992-12-15 Wurth Paul Sa Installation de chargement d'un four a cuve
DE10240219A1 (de) * 2002-08-28 2004-03-11 Claas Selbstfahrende Erntemaschinen Gmbh Vorrichtung zur Steuerung einer Überladeeinrichtung
AT502479B1 (de) * 2005-10-24 2007-04-15 Voest Alpine Ind Anlagen Verfahren und vorrichtung zum chargieren von einsatzstoffen
EP2955236A1 (de) * 2014-06-13 2015-12-16 Siemens VAI Metals Technologies GmbH Verfahren zur Regelung der Füllhöhe eines Rohmaterials in einem Hochofen sowie deren Vorrichtung

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB782486A (en) * 1955-03-11 1957-09-04 United States Steel Corp Swinging spout and drive therefor applicable to the travelling grates of sintering apparatus
US3362585A (en) * 1965-12-23 1968-01-09 Fischer & Porter Co Dry chemical feeder
US3581070A (en) * 1968-11-01 1971-05-25 Nippon Steel Corp Apparatus for operating a shaft furnace by detecting the falling speed of the charge
US3929240A (en) * 1972-07-05 1975-12-30 Wurth Anciens Ets Paul Shaft furnace charging process
LU65660A1 (de) * 1972-07-05 1972-10-30
JPS5222802B2 (de) * 1973-10-12 1977-06-20
LU70952A1 (de) * 1974-09-20 1975-03-06
LU77547A1 (de) * 1977-06-16 1977-09-19
NL7707178A (en) * 1977-06-29 1979-01-03 Hoogovens Ijmuiden Bv Device for determining charge distribution in blast furnace - consists of two radar antennae mounted on ball joints, a transmitter and a receiver
DE2927316B1 (de) * 1979-07-06 1980-02-21 Demag Ag Mannesmann Verteilvorrichtung fuer Gichtverschluesse von Schachtoefen,insbesondere fuer Hochofen-Gichtverschluesse
LU83280A1 (fr) * 1981-04-03 1983-03-24 Wurth Paul Sa Procede pour actionner une goulotte oscillante dans une enceinte sous pression,dispositif pour la mise en oeuvre de ce procede et installation de chargement d'un four a cuve equipe d'un tel dispositif
LU83370A1 (fr) * 1981-05-18 1983-03-24 Wurth Paul Sa Dispositif de commande du mouvement d'une goulotte oscillante et installation de chargement d'un four a cuve equipe d'un tel dispositif
LU84521A1 (fr) * 1982-12-10 1984-10-22 Wurth Paul Sa Dispositif de refroidissement d'une installation de chargement d'un four a cuve

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989004446A1 (fr) * 1987-11-12 1989-05-18 Voest-Alpine Industrieanlagenbau Gesellschaft M.B. Agencement de transport de quantites dosees de matieres en vrac
EP1833999B2 (de) † 2004-11-26 2012-08-22 Siemens VAI Metals Technologies Ltd. Vorrichtung zur verteilung von material in einem ofen
US8419336B2 (en) 2004-11-26 2013-04-16 Vai Industries (Uk) Limited Device for distributing material into an enclosure
CN101580886B (zh) * 2008-05-13 2010-09-22 中冶赛迪工程技术股份有限公司 一种散装物料布料器

Also Published As

Publication number Publication date
UA7055A1 (uk) 1995-03-31
JPH0336889B2 (de) 1991-06-03
JPS5941405A (ja) 1984-03-07
ES524421A0 (es) 1984-11-16
SU1143316A3 (ru) 1985-02-28
IN158936B (de) 1987-02-21
PL140295B1 (en) 1987-04-30
PL243129A1 (en) 1984-03-12
AU563801B2 (en) 1987-07-23
CS254321B2 (en) 1988-01-15
KR840005570A (ko) 1984-11-14
CA1203308A (en) 1986-04-15
LU84303A1 (fr) 1984-03-22
BR8304098A (pt) 1984-03-07
ES8500663A1 (es) 1984-11-16
CS545883A2 (en) 1987-06-11
AU1661683A (en) 1984-02-02
EP0101846B1 (de) 1986-10-08
KR920006585B1 (ko) 1992-08-10
ATE22723T1 (de) 1986-10-15
ZA835074B (en) 1984-03-28
EP0101846A3 (en) 1984-05-23
DE3366729D1 (en) 1986-11-13
US4575790A (en) 1986-03-11

Similar Documents

Publication Publication Date Title
EP0101846B1 (de) Verfahren und Vorrichtung zum Steuern der Bewegung einer Einfülleitung und deren Anwendung für eine Beladevorrichtung eines Schachtofens
EP0724528B2 (de) Verfahren zur füllung eines behälters mit einem referenznettogewicht
EP3449029B1 (de) Vorrichtung zur kontinuierlichen heisstauchbeschichtung eines metallbandes und zugehöriges verfahren
EP3449030B2 (de) Vorrichtung zur kontinuierlichen schmelztauchbeschichtung eines metallbandes und zugehöriges verfahren
FR2764165A1 (fr) Procede de reglage d'un epandeur centrifuge
FR2797825A1 (fr) Appareil de mise a niveau de phares d'un vehicule
FR2740395A1 (fr) Dispositif pour commander un train roulant a courbe caracteristique variable dans un vehicule
EP2080430B1 (de) Verfahren zum Einstellen eines landwirtschaftlichen Zentrifugalstreuers, entsprechende Einstellvorrichtung, landwirtschaftlicher Zentrifugalstreuer und entsprechendes Computerprogramm
EP0682857B1 (de) Verfahren um die Streubreite für einen Granulatstreuer zu regeln
EP0270870B1 (de) Mechanismus zum Betätigen eines Klappenverschlusses
EP0033258B1 (de) Windkraftmaschine mit einstellbarer Orientierung der Radwelle
EP1310768B1 (de) Verfahren und Vorrichtung zur Anzeige des Geschwindigkeitsvektors eines Flugzeugs
EP0269930A1 (de) Mechanismus zum Betätigen eines Klappenverschlusses
EP3956640B1 (de) Vorrichtung zum messen einer masse eines körpers und zugehörige verfahren
EP0716889A2 (de) Verfahren und Vorrichtung zum Spritzen von Beschichtungsprodukten
EP2627983B1 (de) Fallschutzvorrichtung für ein zweirädriges fahrzeug
FR2488861A1 (fr) Perfectionnement aux dispositifs de centrage de produits granuleux ou pulverulents deverses en tete de transporteur a bande, notamment, sur un autre transporteur
FR2460740A1 (fr) Procede et dispositif de rechargement pour le depot d'une couche superficielle de materiau de soudage de composition variable, et produits traites conformement audit procede
BE876794R (fr) Appareil de commande automatique pour machine a scier les diamants
EP0012676A1 (de) Maschine zum äusserlichen Überziehen, insbesondere mit Beton, von Gegenständen wie Rohren
EP0435800A1 (de) Verfahren zum Einleiten von flüssigem Metall auf eine Walze beim Strangguss und Verfahren zu seiner Durchführung
EP3221271A1 (de) Vorrichtung zur handhabung der kante eines floatglasbandes mit rad mit geneigter achse und installation mit einer derartigen vorrichtung

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

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

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

17P Request for examination filed

Effective date: 19840210

AK Designated contracting states

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

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 FR GB IT NL SE

REF Corresponds to:

Ref document number: 22723

Country of ref document: AT

Date of ref document: 19861015

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3366729

Country of ref document: DE

Date of ref document: 19861113

ITF It: translation for a ep patent filed
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
ITTA It: last paid annual fee
EAL Se: european patent in force in sweden

Ref document number: 83106698.0

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

Ref country code: FR

Payment date: 19960703

Year of fee payment: 14

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

Ref country code: NL

Payment date: 19960729

Year of fee payment: 14

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

Ref country code: AT

Payment date: 19960731

Year of fee payment: 14

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

Ref country code: BE

Payment date: 19960802

Year of fee payment: 14

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: 19970708

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

Ref country code: BE

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

Effective date: 19970731

BERE Be: lapsed

Owner name: PAUL WURTH S.A.

Effective date: 19970731

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: 19980201

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: 19980331

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

Effective date: 19980201

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

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

Ref country code: SE

Payment date: 19980717

Year of fee payment: 16

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

Ref country code: SE

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

Effective date: 19990709

EUG Se: european patent has lapsed

Ref document number: 83106698.0

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

Ref country code: DE

Payment date: 20000610

Year of fee payment: 18

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

Ref country code: GB

Payment date: 20000614

Year of fee payment: 18

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: 20010708

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

Effective date: 20010708

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: 20020501