EP0363576B1 - Dispositif d'injection d'air préchauffé dans un four à cuve - Google Patents

Dispositif d'injection d'air préchauffé dans un four à cuve Download PDF

Info

Publication number
EP0363576B1
EP0363576B1 EP89112514A EP89112514A EP0363576B1 EP 0363576 B1 EP0363576 B1 EP 0363576B1 EP 89112514 A EP89112514 A EP 89112514A EP 89112514 A EP89112514 A EP 89112514A EP 0363576 B1 EP0363576 B1 EP 0363576B1
Authority
EP
European Patent Office
Prior art keywords
articulation
connection piece
ties
curvature
ball
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
EP89112514A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0363576A1 (fr
Inventor
Pierre Mailliet
Emile Lonardi
Georges Wahl
Gustave Hoelpes
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
Priority claimed from LU87283A external-priority patent/LU87283A1/fr
Priority claimed from LU87505A external-priority patent/LU87505A1/fr
Application filed by Paul Wurth SA filed Critical Paul Wurth SA
Priority to AT89112514T priority Critical patent/ATE93547T1/de
Publication of EP0363576A1 publication Critical patent/EP0363576A1/fr
Application granted granted Critical
Publication of EP0363576B1 publication Critical patent/EP0363576B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/16—Tuyéres
    • C21B7/163—Blowpipe assembly

Definitions

  • the present invention relates to a device for injecting preheated air into a shaft furnace, consisting of several separate elements consisting of an outer shield and an inner refractory lining and comprising at least one central tubular element connected, on one side, by a first ball joint and a first compensator to a first tube integral with a circular duct for supplying preheated air surrounding the oven and, on the opposite side, by a second ball joint and a second compensator to a second tube which is extended by an elbow and a nozzle, the latter being articulated by a third articulation with a spherical joint with respect to the wall of the furnace and further comprising at least one pair of tie rods connecting, by articulated means, the first tubing to the second tube and in which said first articulation is oriented so that its center of co urbure is located on the axis of said first pipe inside thereof.
  • wind carrier is exposed to mobility and leakage problems. Indeed, due to the high temperature of the preheated air (temperature of 1,200 ° C or more) and the high temperature inside the oven, the wall of the oven, as well as the circular duct and the blower are exposed to thermal expansions and deformations causing significant relative movements between the circular pipe and the oven wall. It is therefore necessary that the wind carrier is able to compensate for these relative displacements while avoiding leaks of gas or preheated air.
  • US Patent No. 3,766,868 provides a wind carrier of the kind described in the preamble.
  • This wind carrier was subsequently perfected by the design of universal joints with spherical joints of the kind described in document DE-C2-2218331.
  • the three articulations of this wind carrier allow the compensation of all relative movements between the circular duct and the wall of the oven. Sealing at the joints is ensured by bellows compensators, while mechanical stability is ensured by cardanic links associated at the level of the first and second joints with spherical joints at the two opposite ends of the tubular element. central.
  • the object of the present invention is to provide an injection device of the kind described in the preamble which allows a better compromise between these contrary requirements.
  • the device proposed by the present invention in claim 1 is essentially characterized in that the second articulation is oriented in the opposite direction relative to the first articulation and in that its center of curvature is on the axis of the second tube, inside the latter or the elbow.
  • the tie rods are connected to the two tubes by joints, the centers of which are respectively in two diametrical planes of the tubes, each containing the center of curvature of one of said first or second spherical articulation.
  • each of the tie rods is connected to a flange of said said first or second tubing by a pair of washers with adjacent spherical sliding surfaces, the center of curvature of which is situated beyond the end of the tie rod in a diametral plane of the tubing containing the center of curvature of said first or second articulation spherical.
  • the central tubular element is connected to the tie rods by a device for guiding and supporting the central element.
  • the known wind carrier shown in Figure 1 by the reference 20 connects a main circular pipe 22, arranged around a blast furnace, to the wall 24 thereof.
  • This blower 20 has a rectilinear oblique section consisting of a central tubular element 26 articulated by its upper end on a tube 28 secured to the circular pipe 22 and by its lower end on a tube 30 which is clamped on an elbow 32.
  • This elbow 32 is extended by a nozzle 34 whose end is articulated on a nozzle 36 fixed in the wall 24 from the oven.
  • the upper articulation 38 and the lower articulation 40 of the element 26 are spherical joint joints whose centers of curvature are identified by X and Y.
  • the articulation between the nozzle 34 and the nozzle 36 is a joint 42 with a spherical joint whose center of curvature is represented by Z.
  • the three points X, Y and Z therefore constitute a three-point articulation in space which allows sufficient angular displacements of the nozzle 34 and of the central element 26 to compensate for all the relative movements between the circular pipe 22 and the wall 24 of the oven.
  • the distance between the centers of curvature X and Y of the joints 38 and 40 is represented by 1 in FIG. 1.
  • the amplitudes of the angular displacements of the central element 26 and, consequently, the stresses of the compensators 44 and 46 will be as much smaller as this distance 1 is greater.
  • lengthening the length 1 increases the dimensions of the wind carrier.
  • the lower articulation of the central tubular element is turned over so that the two upper and lower ends of this central element become concave, while the corresponding adjacent ends of the pipes of the circular pipe and that of the elbow become convex.
  • This windshield proposed by the present invention is shown in Figure 2 and the elements corresponding to those of Figure 1 bear the similar references of the 100 series.
  • the centers of curvature X and Y of the ball joints 138 and 140 are separated by a distance l ′ which, in the example shown, is equal to the distance l in FIG. 1.
  • the total length of the central element 126 has been considerably reduced, the difference in length being illustrated by the distance between the axis O ′ of the circular pipe of FIG.
  • Figures 3 and 4 show in more detail the two joints 138 and 140 on either side of the central tubular element 126.
  • the radii of curvature R1 and R2 of the two spherical joints 138 and 140 are preferably equal.
  • the present invention also proposes the elimination of the cardan joints 48 and 50 of FIG. 1.
  • a pair of tie rods has been provided diametrically opposite to each other and connecting the upper tube 128 to the lower tube 130.
  • these tie rods 152, 154 are simply engaged on pivots 156 integral with the pipes 128 and 130.
  • the tie rods 152, 154 must be engaged on the pivots 156 with sufficient clearance.
  • the axis of the two pivots 156 of the tubing 128 passes through the center of curvature X of the upper articulation 138.
  • the lower pivots 156 must be fixed on the tubing 130 so that their axes also pass through the center of curvature Y of the lower joint 140.
  • FIG. 5 illustrates, for example, a relative lateral offset, of an amplitude s between the upper tube 128 and the lower tube 130.
  • Such an offset can, for example, be caused by a horizontal displacement of the circular pipe 122 relative to in the oven or a rotation of this pipe with respect to the oven.
  • the axes of the pipes 128 and 130 remain parallel to each other while the central element 126 compensates for this offset by positioning itself so that its axis passes through the centers of curvatures X and Y of the two joints 138 and 140. This movement causes, on one side, a compression of the corrugations of the compensators 144 and 146 and a relaxation of the undulations of these compensators on the opposite side.
  • FIGS. 6 and 7 show flexions, respectively in one direction and in the opposite direction of the wind carrier at the level of the central element 126.
  • the axis of the lower tube 130 is inclined at an angle by relative to the axis of the upper tube 128.
  • This bending is compensated by the central element 126 which is automatically positioned so that its axis passes through the centers of curvature X and Y of the two joints, that is to say that its axis forms an angle ⁇ / 2 with the axis of the upper tube 128 and an angle ⁇ / 2 with the axis of the lower tube 130.
  • the positions of FIGS. 6 and 7 result essentially from a relative vertical movement between the circular pipe 122 and the wall 124 of the oven.
  • Figure 8 shows a lateral offset between the upper and lower pipes 128 and 130 similar to that of Figure 5, but in a direction perpendicular to the movements of Figure 5, that is to say the offset of Figure 8 is located in the plane of Figure 2.
  • Figures 5 to 8 show, by way of illustration, elementary movements, but in practice, the movements of the blower are more complex, it is that is, the offsets and inclinations shown in Figures 5 to 8 can occur at the same time.
  • Figure 9 shows an advantageous embodiment which allows a shortening of the tie rods of the embodiment of Figure 3.
  • the two pipes 228 and 230 respectively have a circular flange 258 and 260 which are attached to the compensators 244, 246 and which are crossed by tie rods 252, 254.
  • the connection between the ends of the tie rods 252, 254 and the flanges 258 and 260 is illustrated in detail in FIG. 9a and with reference to the connection between the tie rod 254 and the flange 258, the three other connections being identical to that of the figure. 9a.
  • the flange 258 has a passage opening 262 of the tie rod 258 which is wide enough to allow a certain inclination of the tie rod 254 relative to the flange 258 as a result of the movements illustrated in FIGS. 5 to 8.
  • the tie rods are maintained by nuts 264 screwed onto the ends of the tie rods, outside the flanges 258, 260.
  • each nut 264 and the corresponding flange 258 or 260 are two washers 266, 268 whose adjacent surfaces slide one over the other by following the inclination of the tie rod relative to the flange.
  • the adjacent sliding surfaces of the washers 266, 268 have spherical curvatures whose center of curvature is located beyond the flanges 258, 260 on the axis of the tie rods 252, 254 or on the extension of these axes.
  • the center of curvature of the washers 266, 268 must also be located in a diametral plane of the tube 228 containing the center of curvature X of the spherical joint 238 between this tube 228 and the central element 226. note that the two washers 266 and 268 can be replaced respectively by a seat secured to the flange 258 and a curved surface of the nut 264.
  • the advantage of the design according to FIGS. 9 and 9a is that one can either bring each of the flanges 258, 260 closer to the central element 226 by a distance R corresponding to the radius of curvature of the washers 266, 268 and reduce by 2R the length of each tie rod 252, 254, or increase the radii of curvature of the two spherical joints 238, 240 and thus lengthen the distance between their center of curvature X and Y.
  • Figures 5 to 8 have shown that the compensation of the different relative movements between the upper and lower tubing is achieved by aligning the axis of the central element on the centers of curvature X and Y of the two spherical joints. It is proposed, in the embodiment of FIGS. 10 to 17, to assist the optimal positioning of the central element 226 to avoid any random movements and superfluous friction at the joints of the joints.
  • Figures 10 and 11 show side views of the central tubular element 326 provided on either side with its compensators 344, 346 surrounding the spherical seals 338 and 340, not visible in these figures.
  • a frame 352 eg square or, preferably, in the form of a ring, is arranged around the central element 326 to which it is articulated by two pivots 354 and 356, diametrically opposite, eg housed in openings passage of the ring 352 and the shielding of the central element 326.
  • the ring 352 can therefore perform a pivoting movement relative to the common axis O of the two pivots 354, 356 and vice versa.
  • the ring 352 further comprises, offset by 90 ° relative to the pivots 354, 356, two diametrically opposite articulations, connecting it to two tie rods 358, 360.
  • articulations can be formed, in the simplest way, by two pairs of forks 362 and 364 welded externally to the ring 352 and in the rounded hollow of which is engaged a cross-piece 366, 368 with round section, integral with the tie rods 358, 360.
  • the axes of the cross-pieces 366, 368 therefore form two pivot axes between the ring 352, on the one hand, and the tie rods 358, 360, on the other hand, and vice versa, these two axes being both parallel to the pivot axis O described above.
  • Each of the two tie rods, 358, 360 is, moreover, articulated by its upper and lower ends respectively to the upper tubes 328 and lower 330.
  • Each of these articulations can be constituted by a simple hinge 370 comprising a pivoting hub 372 engaged through a double eyelet secured to the tubing concerned and an opening at the end of the tie rod 358 or 360.
  • the passage openings at the ends of the tie rods 358, 360 are made in oblong holes and preferably have rounded bearing surfaces in order to allow also pivoting of the tie rods 358, 360 in the plane of FIG. 11.
  • the hinges 372 can also be replaced by more sophisticated articulations, eg ball joints to make an arrangement in accordance with FIG. 9.
  • the tie rods 358 and 360 therefore maintain a constant and predetermined distance between the pipes 328 and 330, while they carry, by means of the ring 352, the central element 326 floating between the pipes 328 and 330.
  • FIGS. 12 to 17 illustrate different possibilities of relative movements and pivotings between the pipes 328 and 330 and the manner in which these movements are compensated by a corresponding positioning of the central element 326.
  • the transverse deformations relative to the plane of FIGS. 12 to 14 and illustrated by FIGS. 15 to 17 stress the articulations at the level of the ring 352.
  • the displacements in this plane cause a parallel deformation between the tie rods 358, 360 and the ring 352 by pivoting of the latter around the axis O relative to the central element 326 and by relative pivoting between the ring 352 and the tie rods 358, 360.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Joints Allowing Movement (AREA)
  • Blast Furnaces (AREA)
  • Pipe Accessories (AREA)
  • Duct Arrangements (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
EP89112514A 1988-07-19 1989-07-08 Dispositif d'injection d'air préchauffé dans un four à cuve Expired - Lifetime EP0363576B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89112514T ATE93547T1 (de) 1988-07-19 1989-07-08 Vorrichtung zum einblasen vorgewaermter luft in einen schachtofen.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
LU87283 1988-07-19
LU87283A LU87283A1 (fr) 1988-07-19 1988-07-19 Dispositif d'injection d'air prechauffe dans un four a cuve
LU87505A LU87505A1 (fr) 1989-04-21 1989-04-21 Dispositif d'injection d'air prechauffe dans un four a cuve
LU87505 1989-04-21

Publications (2)

Publication Number Publication Date
EP0363576A1 EP0363576A1 (fr) 1990-04-18
EP0363576B1 true EP0363576B1 (fr) 1993-08-25

Family

ID=26640330

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89112514A Expired - Lifetime EP0363576B1 (fr) 1988-07-19 1989-07-08 Dispositif d'injection d'air préchauffé dans un four à cuve

Country Status (16)

Country Link
US (1) US4987838A (es)
EP (1) EP0363576B1 (es)
JP (1) JP2840763B2 (es)
KR (1) KR0133671B1 (es)
CN (1) CN1019818B (es)
AU (1) AU608987B2 (es)
BR (1) BR8903613A (es)
CA (1) CA1335328C (es)
CZ (1) CZ279945B6 (es)
DE (1) DE3920221C2 (es)
ES (1) ES2043975T3 (es)
FR (1) FR2634543B1 (es)
GB (1) GB2221023B (es)
PL (1) PL162875B1 (es)
SK (1) SK278767B6 (es)
TR (1) TR24989A (es)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU87730A1 (fr) * 1990-04-27 1991-11-15 Wurth Paul Sa Dispositif d'injection d'air prechauffe dans un four a cuve
LU87838A1 (fr) * 1990-11-09 1992-08-25 Wurth Paul Sa Dispositif d'injection d'air prechauffe dans un four a cuve et procede de fabrication de rotules convexes d'articulations spheriques
US5209657A (en) * 1990-11-09 1993-05-11 Paul Wurth S.A. Device for injecting preheated air into a shaft furnace and process of manufacturing ball-and-socket joints
ZA918261B (en) * 1990-11-09 1992-09-30 Wurth Paul Sa Device for injecting preheated air into a shaft furnace and process for manufacturing ball-and-socket joints
JPH065531A (ja) * 1992-06-22 1994-01-14 Tokyo Electron Tohoku Ltd 熱処理装置の配管連結装置
NL9201838A (nl) * 1992-10-23 1994-05-16 Hoogovens Groep Bv Hetewindleiding.
US6176526B1 (en) 1999-01-04 2001-01-23 Lever Brother Company Division Of Conopco Expansion joint
KR100804813B1 (ko) * 2003-08-11 2008-02-20 (주) 대진스폐샬옵텍스 자외선 측정기
DE102010015842A1 (de) * 2010-03-05 2011-09-08 Z & J Technologies Gmbh Heißwinddüsenstock für einen Schachtofen, insbesondere Hochofen
CN102914144B (zh) * 2011-08-01 2016-04-27 Sab有限公司 鼓风口弯头
LU91921B1 (en) * 2011-12-19 2013-06-20 Wurth Paul Sa Compensation joint for a fluid conduit
LU102097B1 (en) 2020-09-28 2022-03-29 Wurth Paul Sa Reducing gas injection System

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE35369C (de) * BOCHUMER EISENHÜTTE, HEINTZMANN & DREYER in Bochum Neuerung an Düsenstöcken
US1866080A (en) * 1931-06-30 1932-07-05 Edgar E Brosius Tuyere structure and method of changing the same
DE584146C (de) * 1931-07-30 1933-09-15 Edgar E Brosius Verfahren und Vorrichtung zum Auswechseln von Hochofenwindformen
US3166621A (en) * 1961-03-16 1965-01-19 Colorado Fuel & Iron Corp Burner tuyere arrangement for a blast furnace
BE748939A (es) * 1969-04-21 1970-09-16 Wurth Anciens Ets Paul
LU63079A1 (es) * 1971-04-29 1971-08-27
US3766868A (en) * 1972-02-22 1973-10-23 Anciens Etablissements P Warth Tuyere stock for furnaces
DE7325087U (de) * 1973-07-07 1973-11-08 Steinfurter Eisenwerk Gmbh Düsenstock
FR2404674A1 (fr) * 1977-09-30 1979-04-27 Usinor Dispositif de support d'une descente de vent de haut-fourneau
DE3221070C1 (de) * 1982-06-04 1983-08-25 Hawiko Kompensatoren- und Apparatebau GmbH & Co KG, 5830 Schwelm Duesenstock fuer Schachtoefen,insbesondere Hochoefen

Also Published As

Publication number Publication date
KR0133671B1 (ko) 1998-07-01
JP2840763B2 (ja) 1998-12-24
FR2634543A1 (fr) 1990-01-26
PL280660A1 (en) 1990-02-05
AU608987B2 (en) 1991-04-18
US4987838A (en) 1991-01-29
PL162875B1 (pl) 1994-01-31
CN1019818B (zh) 1992-12-30
CN1039445A (zh) 1990-02-07
CZ441189A3 (en) 1995-04-12
KR900001864A (ko) 1990-02-27
BR8903613A (pt) 1990-03-13
EP0363576A1 (fr) 1990-04-18
SK441189A3 (en) 1998-02-04
DE3920221C2 (de) 1998-05-14
CZ279945B6 (cs) 1995-09-13
CA1335328C (en) 1995-04-25
GB8914973D0 (en) 1989-08-23
GB2221023B (en) 1991-12-04
FR2634543B1 (fr) 1992-02-07
GB2221023A (en) 1990-01-24
ES2043975T3 (es) 1994-01-01
SK278767B6 (sk) 1998-02-04
JPH0273909A (ja) 1990-03-13
DE3920221A1 (de) 1990-01-25
TR24989A (tr) 1992-08-17
AU3659289A (en) 1990-01-25

Similar Documents

Publication Publication Date Title
EP0363576B1 (fr) Dispositif d'injection d'air préchauffé dans un four à cuve
EP1273814B1 (fr) Dispositif pour améliorer le graissage de roulements équipant notamment des éoliennes
FR2577005A1 (fr) Manchon-raccord a la cardan pour des systemes de canalisations
EP0742840B1 (fr) Dispositif de repartition de matieres en vrac
CA2806661C (fr) Dispositif de commande d'aubes pivotantes de turbomachine
FR2616858A1 (fr) Element a raideur variable pour pied de colonne de transfert
FR2888825A1 (fr) Gaine pour le guidage d'un fil
FR2657922A1 (fr) Dispositif d'etancheite pour tuyere d'echappement et tuyere ainsi obtenue.
EP0453739B1 (fr) Dispositif d'injection d'air préchauffé dans un four à cuve
FR2746869A1 (fr) Agencement de montage pour des elements rotatifs, en particulier les satellites d'un train planetaire
FR2800818A1 (fr) Dispositif protecteur pour un train d'entrainement comprenant un joint a croisillon double
LU88241A1 (fr) Dispositif d'injection d'air préchauffé dans un four à cuve
EP1053065B1 (fr) Procede de realisation de tuyaux a raccorder dans une canalisation a double paroi et machine pour sa mise en oeuvre
EP1046806B1 (fr) Tuyère d'éjection de turboréacteur à système d'orientation du type cardan
EP0068987B1 (fr) Dispositif de jonction entre le conduit de refoulement d'une pompe primaire et un conduit solidaire du support de coeur d'un réacteur nucléaire à neutrons rapides
LU87505A1 (fr) Dispositif d'injection d'air prechauffe dans un four a cuve
LU87283A1 (fr) Dispositif d'injection d'air prechauffe dans un four a cuve
LU87504A1 (fr) Dispositif d'injection d'air prechauffe dans un four a cuve
LU88494A1 (fr) Dispositif de chargement à goulotte rotative pour un four à cuve
FR2716521A1 (fr) Raccord angulaire.
EP0376839A1 (fr) Compensateur de dilatation monté entre deux tuyauteries
WO2000045040A1 (fr) Systeme d'activation de tuyere orientable par anneau elastique pour propulseur a reaction
FR2545406A1 (fr) Colonne support telescopique pour bras de manipulateur
FR2528160A1 (fr) Canne porte-buse pour four a cuve, en particulier haut fourneau
EP0484720B1 (fr) Dispositif d'injection d'air préchauffé dans un four à cuve et procédé de fabrication de rotules convexes d'articulations sphériques

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 ES IT NL

17P Request for examination filed

Effective date: 19900626

17Q First examination report despatched

Effective date: 19920330

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE ES IT NL

REF Corresponds to:

Ref document number: 93547

Country of ref document: AT

Date of ref document: 19930915

Kind code of ref document: T

ITF It: translation for a ep patent filed

Owner name: ING. A. GIAMBROCONO & C

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2043975

Country of ref document: ES

Kind code of ref document: T3

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: NL

Payment date: 20010619

Year of fee payment: 13

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

Ref country code: BE

Payment date: 20020717

Year of fee payment: 14

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: 20030201

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

Effective date: 20030201

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: 20030731

BERE Be: lapsed

Owner name: S.A. PAUL *WURTH

Effective date: 20030731

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

Ref country code: ES

Payment date: 20070726

Year of fee payment: 19

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

Ref country code: AT

Payment date: 20070618

Year of fee payment: 19

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

Ref country code: IT

Payment date: 20070725

Year of fee payment: 19

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: 20080708

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: 20080708

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20080709

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: 20080709