EP1053401A1 - Systeme de bifurcation tubulaire pour pompe a liquides epais a deux cylindres - Google Patents

Systeme de bifurcation tubulaire pour pompe a liquides epais a deux cylindres

Info

Publication number
EP1053401A1
EP1053401A1 EP99908801A EP99908801A EP1053401A1 EP 1053401 A1 EP1053401 A1 EP 1053401A1 EP 99908801 A EP99908801 A EP 99908801A EP 99908801 A EP99908801 A EP 99908801A EP 1053401 A1 EP1053401 A1 EP 1053401A1
Authority
EP
European Patent Office
Prior art keywords
ring
wear
swivel tube
cylinder
rubber
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
EP99908801A
Other languages
German (de)
English (en)
Other versions
EP1053401B1 (fr
Inventor
Hellmut Hurr
Hartmut Benckert
Karl Schlecht
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.)
Putzmeister Concrete Pumps GmbH
Original Assignee
Putzmeister 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
Priority claimed from DE19860185A external-priority patent/DE19860185A1/de
Application filed by Putzmeister AG filed Critical Putzmeister AG
Publication of EP1053401A1 publication Critical patent/EP1053401A1/fr
Application granted granted Critical
Publication of EP1053401B1 publication Critical patent/EP1053401B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/0084—Component parts or details specially adapted therefor
    • F04B7/0088—Sealing arrangements between the distribution members and the housing
    • F04B7/0096—Sealing arrangements between the distribution members and the housing for pipe-type distribution members

Definitions

  • the invention relates to a pipe switch for two-cylinder thick matter pumps with a swivel tube pivotable in front of a cylinder-side wear plate provided with two openings, with a axially displaceable to a limited extent on the cylinder-side end of the swivel tube, under the action of the hydrostatic internal pressure prevailing in the swivel tube in the edge region of the openings against the Wear plate which can be pressed on and which has a centering part guided on an axially parallel centering surface of the swivel tube and a sealing part which bears against the wear plate with an end face on the cylinder side, the swivel tube and the sealing part having mutually facing annular surfaces which are axially separated from one another by an annular space open to the inside of the tube, and with an at least partially made of rubber-elastic material, the axially bridging the annular space, with their end faces against one of the ring surfaces preferably u Ring arrangement under pre-tension.
  • Pipe switches of this type which carry an automatically hydrostatically adjusting wear ring, are known (DE-A 26 14 895, EP-B 0 656 995).
  • a rubber-elastic ring which is intended to seal the gap formed between the centering section and the centering surface and which also has a spring function when the sealing section is pressed on - 2 -
  • the invention has for its object to improve the known pipe switch of the type mentioned in that the rubber-elastic material of the ring assembly is not exposed to excessive wear.
  • the solution according to the invention is based on the idea that the rubber-elastic material is protected from the wear effect of the cement with suitable measures.
  • the ring arrangement at least on its end face facing the centering part of the wear ring, has an axial ring support made of stiffer compared to the rubber-elastic material, - 3 -
  • the ring support advantageously consists of metal, of a metal or textile fabric, of plastic or of hard rubber.
  • the ring support can be glued or vulcanized onto the rubber-elastic material.
  • the ring arrangement has at least two rings made of rubber-elastic material which are separated from one another by a hard intermediate ring.
  • the intermediate ring is expediently designed as a metallic ring disk which has the same inside and outside diameter as the rubber-elastic rings.
  • the intermediate ring can be placed loosely between the rubber-elastic rings in the annular space and can be provided with a plurality of openings arranged at an angular distance from one another.
  • the rubber-elastic rings are advantageously connected to one another by a plurality of axially parallel pins which are arranged at an angular distance from one another and which pass through openings in the intermediate ring.
  • the rubber-elastic rings are vulcanized with their respective end faces onto the intermediate ring.
  • the ring arrangement is formed by a rubber-elastic ring with a coaxially vulcanized spiral spring.
  • the helical spring expediently consists of spring steel and can be - 4 -
  • the ring surface adjacent to the centering part has, in a manner known per se, an indentation formed by an indentation pointing in the direction of the centering part and undercut with respect to the tube interior, and that in the ring step a part separated from the ring arrangement Sealing ring made of elastomeric material is used.
  • the purpose of the sealing ring is to prevent material from passing through the centering gap and thereby to minimize the cement deposits on the ring surface facing the centering gap.
  • the sealing ring expediently has an oversize in relation to the ring step, which is to be dimensioned such that the sealing ring is pressed into the ring step under the pretension of the ring arrangement.
  • the sealing ring can have either a rectangular, in particular square, cross-section or a round or oval cross-section. Since it is fully encased within the ring step, a soft, elastic material without stiffening can be used.
  • the ring arrangement can consist of a one-piece elastomer ring with a stiffening insert, for example a metal ring. - 5 -
  • annular groove arranged in the centering surface of the swivel tube or in the centering part of the wear ring can be provided for receiving a sealing ring bridging the annular gap between the centering surface and the centering part.
  • a tensioning mechanism arranged between the swivel tube and the wear ring is proposed according to a further advantageous or alternative embodiment of the invention, with which the preload of the ring arrangement can be adjusted.
  • the tensioning mechanism expediently has at least two, preferably three tensioning screws which are arranged distributed over the circumference of the swivel tube and can be displaced axially parallel with respect to the swivel tube and engage in an axially parallel thread of the wear ring.
  • the clamping screws which are preferably designed as cap screws, are each guided with their shafts in an axial guide of the swivel tube that is open at the edge and can be supported with their heads against a shoulder delimiting the axial guide.
  • FIG. 1 shows a thick matter pump with a C-shaped swivel tube in a partially sectioned diagrammatic representation
  • Figure 2 is an enlarged section of the pipe switch with wear ring centered inside in a sectional view.
  • FIG. 3 shows a modified example of a pipe switch with an externally centered wear ring in the untensioned (above) and prestressed (below) state of the rubber-elastic ring arrangement in a sectional view;
  • Fig. 4 a modified compared to Fig. 2 and Fig. 3
  • Fig. 5 shows another modified embodiment of a diverter with a tensioning mechanism for the
  • the thick matter pump shown in FIG. 1 essentially consists of two delivery cylinders 10, the end openings 12 of which open into a material feed container 14 and can be connected alternately during the pressure stroke (arrow 16) via a pipe switch 18 to a delivery line 20 and during the suction stroke (arrow 22) are open towards the material feed container 14 while sucking in material.
  • the feed cylinders 10 are driven by hydraulic - 7 -
  • the delivery pistons 26 are connected to the piston 30 of the drive cylinders 24 via a common piston rod 28.
  • a water box 32 In the area between the feed cylinders 10 and the drive cylinders 24 there is a water box 32 through which the piston rods 28 extend.
  • the end openings 12 of the feed cylinder 10 are covered by an eyeglass-shaped wear plate 34.
  • the swivel tube 36 which is C-shaped in the exemplary embodiment shown, of the tube switch 18 with its end face carrying a wear ring 38 is arranged so that it can be pivoted back and forth about a horizontal axis in front of the wear plate 34 in such a way that its cylinder side Opening 40 passes alternately in front of one or the other opening 12 of the conveying cylinder 10 and the other opening 12 opens up to the inside of the material feed container 14.
  • the wear ring 38 with its centering part 46 is mounted axially displaceably on a cylindrical centering surface 42 of the swivel tube 36.
  • the swivel tube 36 is actuated via a switch 50 which can be controlled by hydraulic means 48.
  • the wear ring 38 has, in addition to the centering section 46, a sealing section 54 which rests with its cylinder-side end face 52 against the wear plate 34.
  • the swivel tube 36 and the sealing section 54 of the wear ring 38 are external - 8th -
  • annular space 59 open to the inside of the tube.
  • the annular space 59 is axially bridged by an annular arrangement 60, which bears with its end faces 62, 64 against one of the annular surfaces 56, 58 under prestress.
  • an axial ring support 80 is vulcanized onto the ring arrangement 60, which consists of a wear-resistant material, such as metal, textile fabric, plastic or hard rubber, which is stiffer than the rubber-elastic material.
  • the stop 82 on the wear ring 38 limits the axial movement of the wear ring 38 on the swivel tube 36.
  • the ring arrangement 60 comprises three rubber-elastic rings 66, 68, 70, which are separated from one another in pairs by loosely inserted metallic intermediate rings 72, 74 and can be connected to one another by pins 76 arranged at an angular distance from one another.
  • the intermediate rings 72, 74 have openings 78 which are arranged at an angular distance from one another and through which a portion of the pins 76 extend.
  • the axial ring support 80 is arranged on the end face of the rubber-elastic ring 66 facing the centering section 46 of the wear ring 38.
  • the ring arrangement 60 is formed by a one-piece rubber-elastic ring 84, into which a coil spring 86 made of spring steel is coaxially vulcanized.
  • the wear ring 38 is guided with its centering section 46 on an outer centering surface 42 of the swivel tube 36.
  • the wear-resistant axial ring support 80 is in this case on the end face 64 of the ring arrangement 60 facing the ring surface 58.
  • the wear ring 38 is tensioned against the wear plate 34 via the swivel tube 36 such that the gap width X between the wear ring 38 and the swivel tube 36 in the area of the stop 82 is reduced from 4 mm to 0.5 to 1 mm.
  • the prestressing path of 3 to 3.5 mm is converted into a transverse expansion of the rubber-elastic components of the ring arrangement 60 towards the inside of the tube, which is indicated in the lower part of FIG. 3 by a curvature.
  • the exemplary embodiment according to FIG. 4 differs from the exemplary embodiment according to FIG. 2 primarily in that the ring surface 56 adjacent to the centering section 46 is formed with respect to the tube interior by a recess pointing in the direction of the centering section 46 - 10 -
  • the sealing ring 90 has undercut ring step 88, into which a sealing ring 90, 90 'made of elastomeric material is inserted, separated from ring arrangement 60.
  • the sealing ring 90 has a rectangular cross section, while the sealing ring 90 'is designed as an O-ring in the lower part of FIG. 4.
  • the sealing ring 90, 90 ' has such an oversize in relation to the axial extent of the ring step 88 that it is completely pressed into the ring step 88 under the prestress of the ring arrangement 60.
  • the unpressed state with a gap width X of 3 mm is shown and in the lower part the pressed state with a gap width X of 0.5 to 1 mm.
  • the preload path is available as an adjustment path if the sealing part 54 of the wear ring 38 and the wear plate 34 wear.
  • a wear-reducing ring support 80 is provided on the end face 62 of the ring arrangement 60 facing the centering section 46, but is not absolutely necessary because of the additional sealing ring 90, 90 '.
  • the ring arrangement 60 comprises two rubber-elastic rings 66, 68, between which a metallic intermediate ring 73 designed as an annular disk is arranged.
  • the rubber-elastic rings 66, 68 are vulcanized onto the intermediate ring 73 with their end faces facing the intermediate ring 73.
  • the metallic intermediate ring 73 and the adjacent rubber-elastic rings 66, 68 have the same inner and outer radius.
  • a tensioning mechanism 96 arranged between the pivot tube 36 and the wear ring 38 is additionally provided.
  • the tensioning mechanism 96 has a plurality, preferably three tensioning screws 98 arranged distributed over the circumference of the swivel tube, which engage with their tip 100 in an axially parallel thread 102 of the wear ring and engage with their shaft 104 through an axial guide 106 of the swivel tube 36 which is open at the edge and rest with their head 108, which is accessible from the outside, against a shoulder 110 fixed to the swivel tube, which limits the radial guide 106.
  • the tensioning mechanism 98 a minimal pre-tensioning of the ring arrangement can be set, so that no material to be conveyed can penetrate into the annular space 59 from the inside of the pipe.
  • the sealing ring 94 ensures that the annular space 59 is also adequately sealed from the external material feed container.
  • the invention relates to a pipe switch for two-cylinder thick matter pumps.
  • the tube switch has a swivel tube 36 which can be pivoted in front of an eyeglass-shaped wear plate 34 on the cylinder side and a swivel tube 36 - 12 -
  • Soapy end of the swivel tube 36 limits axially displaceable wear ring 38 which can be pressed against the wear plate 34 under the action of the hydrostatic internal pressure prevailing in the swivel tube.
  • the wear ring 38 in turn has a centering section 46 which is guided on an axially parallel centering surface 42 of the swivel tube 36 and a sealing section 54 which bears against the wear plate 34 with a cylinder-side end face 52.
  • the swivel tube 36 and the sealing section 54 of the wear ring 38 have mutually facing annular surfaces 56, 58 which are axially separated from one another by an annular space 59 which is open to the interior of the tube.
  • an at least partially rubber-elastic ring arrangement 60 which bridges the annular space 59 axially, with its end faces 62, 64 against each of the ring faces 56, 58 under prestress.
  • the ring arrangement 60 has, on its end face 62 facing the centering portion 46 of the wear ring 38, an axial ring support 80 made of wear-resistant material which is stiffer than the rubber-elastic material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Sealing Devices (AREA)
  • Reciprocating Pumps (AREA)
  • Joints Allowing Movement (AREA)
  • Details Of Reciprocating Pumps (AREA)

Abstract

L'invention concerne un système de bifurcation tubulaire pour pompes à liquides épais à deux cylindres. Ce système de bifurcation présente un tube articulé (36) pivotant, devant une plaque d'usure (34) sous forme de lunette, située côté cylindre, ainsi qu'une bague d'usure (38) déplaçable de manière limitée dans le sens axial au niveau de l'extrémité du tube articulé (36), côté cylindre, ladite bague pouvant être comprimée contre la plaque d'usure (34), sous l'effet de la pression hydrostatique régnant à l'intérieur du tube articulé. La bague d'usure (38) présente quant à elle une partie de centrage (46) guidée sur une surface de centrage (42) du tube articulé (36), qui est parallèle à l'axe, ainsi qu'une partie d'étanchéité (54) reposant contre la plaque d'usure (34), par une face d'about (52) côté cylindre. Le tube articulé (36) et la partie d'étanchéité (54) de la bague d'étanchéité (38) comportent des surfaces annulaires (56, 58) qui se font face et sont séparées dans le sens axial les unes de autres par un espace annulaire (59) ouvert en direction de l'intérieur du tuyau. En outre, il est prévu un système annulaire (60) à élasticité au moins en partie caoutchoutique, qui enjambe l'espace annulaire (59) dans le sens axial et repose par ses faces d'about (62, 64) contre chacune des surfaces annulaires (56, 58), par précontrainte. Afin de permettre un rajustage automatique à effet anti-usure de la bague d'usure, le système annulaire (60) présente sur sa face d'about (62) qui fait face à la partie de centrage (46) de la bague d'usure (38), un appui annulaire (80) axial consistant en un matériau anti-usure, plus rigide que le matériau à élasticité caoutchoutique.
EP99908801A 1998-02-04 1999-01-19 Systeme de bifurcation tubulaire pour pompe a liquides epais a deux cylindres Expired - Lifetime EP1053401B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19804072 1998-02-04
DE19804072 1998-02-04
DE19860185 1998-12-24
DE19860185A DE19860185A1 (de) 1998-02-04 1998-12-24 Rohrweiche für Zweizylinder-Dickstoffpumpe
PCT/EP1999/000301 WO1999040320A1 (fr) 1998-02-04 1999-01-19 Systeme de bifurcation tubulaire pour pompe a liquides epais a deux cylindres

Publications (2)

Publication Number Publication Date
EP1053401A1 true EP1053401A1 (fr) 2000-11-22
EP1053401B1 EP1053401B1 (fr) 2003-04-09

Family

ID=26043546

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99908801A Expired - Lifetime EP1053401B1 (fr) 1998-02-04 1999-01-19 Systeme de bifurcation tubulaire pour pompe a liquides epais a deux cylindres

Country Status (6)

Country Link
US (1) US6338615B1 (fr)
EP (1) EP1053401B1 (fr)
JP (1) JP2002502939A (fr)
ES (1) ES2194445T3 (fr)
PT (1) PT1053401E (fr)
WO (1) WO1999040320A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7407022B2 (en) 2004-07-27 2008-08-05 Clarke Uk, Ltd. Apparatus for pumping drill cuttings and dual cylinder positive displacement pump for moving drill cuttings and method of use

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6857861B2 (en) * 2002-05-15 2005-02-22 Kennametal Inc. Ring for concrete pump
US7462020B2 (en) * 2004-05-28 2008-12-09 Reinert Manufacturing Inc. Concrete pump with pivotable hopper asssembly
US7513758B2 (en) 2005-11-08 2009-04-07 Good Earth Tools, Inc. Sealing rings for abrasive slurry pumps
CN109612861B (zh) * 2018-12-06 2021-06-15 祝汪林 一种纺织布料耐磨性测试机
DE102024107814A1 (de) * 2024-03-19 2025-09-25 Schwing Gmbh Rohrweiche und Axial-Dichtring für eine Zweizylinder-Dickstoffpumpe, und Zweizylinder-Dickstoffpumpe

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2614895C3 (de) 1976-04-07 1987-01-22 Karl Dipl.-Ing. 7000 Stuttgart Schlecht Betonpumpen-Rohrweiche
US4198193A (en) * 1978-05-12 1980-04-15 Walters James F Automatic wear compensation apparatus for concrete pumping hopper apparatus
DE3042930A1 (de) * 1980-11-14 1982-07-08 Stetter Gmbh, 8940 Memmingen Rohrweiche fuer betonpumpen
DE3103321C2 (de) * 1981-01-31 1987-05-07 Friedrich Wilh. Schwing Gmbh, 4690 Herne Zweizylinder-Dickstoffpumpe
DE3113787C2 (de) * 1981-04-04 1985-08-22 Friedrich Wilh. Schwing Gmbh, 4690 Herne Rohrweiche für Beton- oder Dickstoffkolbenpumpen
US5037275A (en) * 1987-06-27 1991-08-06 Karl Schlecht Pipe junction switch for two-cylinder thick-material pump
DE3905355C2 (de) * 1989-02-22 1994-06-23 Schlecht Karl Rohrweiche für Zweizylinder-Dickstoffpumpen
US5302094A (en) * 1988-07-19 1994-04-12 Putzmeister-Werk Maschinenfabrik Gmbh Tube switch for a double-cylinder sludge pump
DE3904862C2 (de) * 1989-02-17 1996-01-18 Schlecht Karl Rohrweiche für Zweizylinder-Dickstoffpumpen
DE19528288C1 (de) * 1995-08-02 1996-02-29 Putzmeister Maschf Zweizylinder-Dickstoffpumpe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9940320A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7407022B2 (en) 2004-07-27 2008-08-05 Clarke Uk, Ltd. Apparatus for pumping drill cuttings and dual cylinder positive displacement pump for moving drill cuttings and method of use

Also Published As

Publication number Publication date
PT1053401E (pt) 2003-08-29
ES2194445T3 (es) 2003-11-16
JP2002502939A (ja) 2002-01-29
US6338615B1 (en) 2002-01-15
EP1053401B1 (fr) 2003-04-09
WO1999040320A1 (fr) 1999-08-12

Similar Documents

Publication Publication Date Title
DE3611952C2 (de) Kolbenpumpe mit verbesserter Abdichtung
EP0096303B1 (fr) Limiteur de pression
DE3601149A1 (de) Dichtung sowie stuetzringanordnung hierfuer
EP0057288A1 (fr) Pompe à deux cylindres pour matières pâteuses notamment pompe à béton comportant un organe de commande qui pivote devant une plaque aux lunettes à côté des cylindres
DE2211178A1 (de) Dichtungssatz und diesen enthaltende Dichtungsgruppe für Hochdruckpumpen od. dgl
DE2903749A1 (de) Zweizylinder-pumpe mit hydrostatisch dichtender s-rohrweiche
WO1998031936A1 (fr) Compresseur a piston alternatif
EP0052192A1 (fr) Dispositif pour pompes à béton
DE4213798A1 (de) Radialkolbenpumpe, insbesondere Kraftstoffpumpe für Verbrennungsmotoren
DE3113787C2 (de) Rohrweiche für Beton- oder Dickstoffkolbenpumpen
EP1110017B1 (fr) ELEMENT D'ETANCHEITE A FAIBLE FROTTEMENT et cylindre hydraulique
EP1053401B1 (fr) Systeme de bifurcation tubulaire pour pompe a liquides epais a deux cylindres
DE69303376T2 (de) Rohrweiche für eine zweizylinder dickstoffpumpe
DE8915484U1 (de) Kolben-Zylinder-Einheit mit gegen Verdrehung gesicherter Kolbenstange
DE69210696T2 (de) Ringventilplatteanordnung für eine Fluidverdrängerpumpe
DE102018100637B3 (de) Dichtung und Beschichtungsmittelpumpe mit einer solchen Dichtung
DE19860185A1 (de) Rohrweiche für Zweizylinder-Dickstoffpumpe
DE2842016A1 (de) Pumpenkolben-dichtung
DE102012211280A1 (de) Kolbenpumpe zum Fördern von dickstoffartigem Fördergut
DE19611673A1 (de) Kolbenstangendichtung
DE3824466A1 (de) Mehrzylinder-dickstoffpumpe
DE1918156A1 (de) Kolbenringpaar sowie Kolbenaggregat
EP0849469B1 (fr) Pompe à deux cylindres pour liquide épais avec distributeur à tube pivotant
DE102007031252A1 (de) Rohrweiche für Zweizylinder-Dickstoffpumpen
DE19802463B4 (de) Dichtungsring

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: 20000707

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE ES FR GB IT NL PT

RBV Designated contracting states (corrected)

Designated state(s): DE ES FR GB IT NL PT

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 20020214

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

Designated state(s): DE ES FR GB IT NL PT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2194445

Country of ref document: ES

Kind code of ref document: T3

ET Fr: translation 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

Effective date: 20040112

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

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050119

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

Ref country code: NL

Payment date: 20051214

Year of fee payment: 8

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

Ref country code: PT

Payment date: 20051230

Year of fee payment: 8

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: 20070719

REG Reference to a national code

Ref country code: PT

Ref legal event code: MM4A

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

Effective date: 20070719

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

Effective date: 20070801

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: 20070801

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

Ref country code: ES

Payment date: 20080212

Year of fee payment: 10

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

Ref country code: GB

Payment date: 20080118

Year of fee payment: 10

Ref country code: DE

Payment date: 20080124

Year of fee payment: 10

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

Ref country code: FR

Payment date: 20080114

Year of fee payment: 10

REG Reference to a national code

Ref country code: FR

Ref legal event code: CJ

Ref country code: FR

Ref legal event code: CD

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

Effective date: 20090119

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: 20090801

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20091030

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: 20090119

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20090120

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: 20090202

Ref country code: ES

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

Effective date: 20090120

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

Ref country code: IT

Payment date: 20080122

Year of fee payment: 10

PGRI Patent reinstated in contracting state [announced from national office to epo]

Ref country code: IT

Effective date: 20091201

PGRI Patent reinstated in contracting state [announced from national office to epo]

Ref country code: IT

Effective date: 20091201