EP0712963B1 - Vorrichtung und Verfahren zum Wegnehmen von Baggergut - Google Patents

Vorrichtung und Verfahren zum Wegnehmen von Baggergut Download PDF

Info

Publication number
EP0712963B1
EP0712963B1 EP19950203198 EP95203198A EP0712963B1 EP 0712963 B1 EP0712963 B1 EP 0712963B1 EP 19950203198 EP19950203198 EP 19950203198 EP 95203198 A EP95203198 A EP 95203198A EP 0712963 B1 EP0712963 B1 EP 0712963B1
Authority
EP
European Patent Office
Prior art keywords
bucket
housing
cutting
dredging material
cutting head
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
EP19950203198
Other languages
English (en)
French (fr)
Other versions
EP0712963A3 (de
EP0712963A2 (de
Inventor
Lijzia Bol
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.)
Ballast Nedam Baggeren BV
Original Assignee
Ballast Nedam Baggeren BV
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 Ballast Nedam Baggeren BV filed Critical Ballast Nedam Baggeren BV
Publication of EP0712963A2 publication Critical patent/EP0712963A2/de
Publication of EP0712963A3 publication Critical patent/EP0712963A3/de
Application granted granted Critical
Publication of EP0712963B1 publication Critical patent/EP0712963B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
    • E02F3/92—Digging elements, e.g. suction heads
    • E02F3/9212—Mechanical digging means, e.g. suction wheels, i.e. wheel with a suction inlet attached behind the wheel
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
    • E02F3/43—Control of dipper or bucket position; Control of sequence of drive operations
    • E02F3/435—Control of dipper or bucket position; Control of sequence of drive operations for dipper-arms, backhoes or the like
    • E02F3/436—Control of dipper or bucket position; Control of sequence of drive operations for dipper-arms, backhoes or the like for keeping the dipper in the horizontal position, e.g. self-levelling
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
    • E02F3/907—Measuring or control devices, e.g. control units, detection means or sensors

Definitions

  • the invention relates to a device for removing dredging material from a water bed, comprising a rotatable cutting head, accomodated in a housing, for cutting away the dredging material, which housing is connected to a pump for discharging the dredging material cut away.
  • Such a device is known from JP-A-2243829. It comprises a housing with a cutting head at the bottom end face, and also a pump which sucks up and pumps out the material cut away.
  • a pump which sucks up and pumps out the material cut away.
  • it is easy to use at locations where little or no space is available.
  • An example given is use in construction pits into which foundation piles have already been driven. After the piles have been inserted, the top layer still has to be removed, for which purpose the abovementioned device is used, since it can be placed between the piles.
  • the known device has the disadvantage that manoeuvring with it is not easy. This gives rise to the risk that it will knock against the piles, thereby causing damage.
  • the cutting head spreads part of the material cut away through the water in the construction pit, which is a disadvantage if underwater concrete has to be poured.
  • the object of the invention is therefore to provide a device of the type described in the preamble which does not have these disadvantages. That is achieved through the fact that the housing is a bucket and said bucket has at least one straight wall.
  • the material cut away is pressed directly into the bucket by the cutting head, with the result that it has hardly any chance of spreading through the water.
  • the material is extracted directly from the enclosed space into the inside of the bucket, with the result that the risk of spreading is further reduced.
  • the bottom right wall bears a cutting edge, and in operation forms the bottom boundary of the bucket. This means that the material to be removed can be cut away in such a way that a flat surface is produced.
  • the cutting edge is preferably a greater distance from the bottom than the other walls of the bucket.
  • the wall with cutting edge designed in this way projects relative to the other walls. In operation, it acts as a support for the bucket, as a result of which the cutting head itself does not have to rest on the material to be removed, and a uniformly worked bottom surface is obtained.
  • the bucket can be designed in all kinds of ways.
  • the bucket can have a square or rectangular bottom, surrounded by four walls.
  • the bucket can have a trapezoidal bottom; further variants, for example with curved walls, are also conceivable.
  • two cutting heads can be accommodated next to each other in the bucket.
  • two of such cutting heads can be provided.
  • This variant can be used, for example, for excavating or cleaning ditches and the like.
  • the upright walls, in the case of a trapezoidal bucket the slanting walls, can in this case also have a cutting edge.
  • the cutting head preferably has at least two blades, which are disposed essentially helically, while each blade can bear at least one cutting tooth on its front side, viewed in the direction of rotation.
  • the bucket has a base which at one side has a casing projecting relative to the base, and the centre line of the cutting head runs crosswise to the base.
  • the bucket can have an essentially square or rectangular base, in which case the casing consists of four panels, one of which is designed with a cutting edge.
  • the bucket can be forced with the cutting edge into the dredging material, so that an accurately determined and flat bottom surface remains. Due to the fact that the cutting head projects partially beyond the casing, it can easily reach the dredging material. The cutting head digs in as a result of the helical arrangement of the cutting blades, and in the process pulls the cutting edge and the remainder of the bucket firmly against the dredging material to be removed.
  • the advantage thereof is that during manoeuvring of the device it can be held in the correct position with limited external forces.
  • the result is that the device can be positioned accurately, which means that the risk of collisions with other objects, for example foundation piles, is considerably reduced.
  • the rear side of the cutters is situated directly in front of the suction mouth, so that the latter is constantly being wiped clean, and clogging is virtually ruled out.
  • Fixed cutters can also be provided on the bottom of the bucket directly opposite the rotating cutters. Such an arrangement of the cutters ensures that sticky clay does not clog the bucket.
  • the pump is accommodated in a housing, while the outside of the base of the bucket faces the housing, and the panel with the cutting edge faces away from the housing.
  • a housing Such an embodiment is suitable in particular for fitting on the articulated arm of a hydraulic crane; for this purpose, at one of its end faces the housing has coupling means for fixing to a crane arm.
  • suction side of the pump is fitted centrally in the other end face of the housing, and is connected to the bucket by way of an elbow.
  • both the bucket and the elbow are connectable at different positions in the peripheral direction of the housing to said housing and the suction side of the pump respectively.
  • the housing can have a cylindrical shell, and the bucket can bear a correspondingly curved fixing flange which is fixed to the housing.
  • the device depending on the position of the bucket, can operate in different directions relative to the hydraulic crane, such as towards said crane, sideways, or away from said crane.
  • Sensor means can also be provided for measuring the angular position of the bucket relative to the horizontal. With the aid of said sensor means, the correct position of the device can be maintained during the dredging, even when the device is under water.
  • the invention also relates to a method for operating the device described above, comprising fitting the bucket with its open side facing the surface or the front of the dredging material to be removed, setting in rotation the cutting head for cutting away the dredging material, and sucking up the dredging material cut away out of the bucket.
  • the bucket of the device is placed with its open side facing downward on the material to be dredged away.
  • the cutting head then digs in, and the device is manoeuvred in such a way that it tilts through 90 degrees, in which case the opening of the bucket is then directed sideways.
  • the device In that position a trench is then dredged. If in the direction of advance the panel with cutting edge is held at an angle of minus five degrees relative to the horizontal, the device can be prevented from slowly creeping upwards as the trench progresses.
  • Figure 1 shows a view in perspective of the device according to the invention.
  • Figure 2 shows a side view of the device according to Figure 1.
  • Figure 3 shows the device fitted on the arm of a hydraulic crane, in the initial position.
  • Figure 4 shows the device in the dug-in position.
  • Figure 5 shows an alternative embodiment
  • the device shown in Figure 1 for removing dredging material comprises a bucket, indicated in its entirety by 1, in which a cutting head 2 is rotatably suspended.
  • the bucket 1 is fixed by means of support 3 to the cylindrical housing 4, in which a pump unit 5 is situated.
  • suspension eyes 6, Fitted at the top side of the housing 4 are suspension eyes 6, which can be gripped by a correspondingly designed coupling piece on a hydraulic crane arm. Eyes 7 are also provided, for the purpose of lifting the device with cables.
  • a suction pipe 8 At the bottom side of the housing 4 runs a suction pipe 8, which at one side is connected to the pump 5 and at the other side opens by way of hole 9 in the bottom 10 into bucket 1.
  • the bucket 1 also has a bottom wall 27, provided at the front side with a cutting edge 11.
  • the bucket 1 has a top wall 26, which is shorter than the bottom wall 27, and has two side walls 12 running between them.
  • the cutting head 2 in the exemplary embodiment shown has three blades 13, running helically and each provided with 2 cutting teeth 14.
  • the cutting head 2 also has a centring element 15.
  • the cutting head 2 is mounted on a hydraulic motor with reduction gearbox 16, which is driven by hydraulic lines which otherwise are not shown.
  • the bucket is also provided with four nozzles 17, which are supplied by pressure lines 18.
  • the L-shaped suction pipe is provided with a flange 19, while the supporting means bear a fixing flange 20 which is curved in a manner corresponding to the cylinder 4.
  • the two flanges 19, 20 and the supports 21 are fixed by means of bolts to the cylindrical housing 4.
  • the position of bucket 1 and suction line 8 in this case can be varied along the periphery of the cylindrical housing 4 through the fact that fixing holes 22 for flange 20 are provided at regular intervals.
  • the flange 19 and the supports 21 can also be fixed at corresponding points.
  • the device For operation of the device according to the invention, it is coupled first of all to the arm of a hydraulic crane. The device is then rotated in such a way that the cylindrical housing 4 lies horizontally, and the bucket 2 has its opening facing the surface to be worked: see Figure 3.
  • the device in this case is suspended from the coupling piece 23, which is situated on the end of the arm 25 of a hydraulic crane.
  • the cutting head 2 and the pump 5 are then put into operation, and the dredging material is removed, and the situation shown in Figure 3 is ultimately obtained.
  • the device in this case is tilted through 90°; the dredging can then be continued in the position of the device shown in Figure 4, in which the device in its entirety is moved in the same position to the right in Figure 4 and makes a trench in the process.
  • the embodiment shown in Figure 5 has a trapezoidal bottom 30, surrounded by bottom wall 31 and side walls 32, all provided with a cutting edge, and top wall 33.
  • Two cutting heads 34 are accommodated in the bucket.
  • Nozzles 35 are also provided.
  • a ditch for example, can be excavated with such a device.

Claims (22)

  1. Vorrichtung zum Räumen von Baggergut aus einem Gewässerbett, mit einem in einem Gehäuse (1) untergebrachten, drehbaren Fräskopf (2) zum Abtragen des Baggergutes, wobei das Gehäuse mit einer Pumpe (5) zum Austragen des abgetragenen Baggergutes verbunden ist, dadurch gekennzeichnet, daß das Gehäuse ein Eimer ist, und der Eimer mindestens eine gerade Wand aufweist.
  2. Vorrichtung nach Anspruch 1, bei der die gerade Wand (27) eine Schneidkante (11) trägt und im Betrieb die untere Begrenzung des Eimers bildet.
  3. Vorrichtung nach Anspruch 2, bei der die Schneidkante (11) sich in einem größeren Abstand vom Boden (10) befindet als die anderen Wände des Eimers.
  4. Vorrichtung nach Anspruch 1, 2 oder 3, bei der die Mittellinie des Fräskopfes quer zum Boden (10) des Eimers verläuft.
  5. Vorrichtung nach Anspruch 4, bei der der Eimer einen im wesentlichen quadratischen oder rechteckigen Boden (10) aufweist.
  6. Vorrichtung nach Anspruch 1, 2 oder 3, bei der der Eimer einen trapezförmigen Boden (10) aufweist.
  7. Vorrichtung nach Anspruch 6, bei der im Betrieb die Wand an der kürzesten parallelen Trapezseite die untere Begrenzung des Eimers bildet.
  8. Vorrichtung nach einem der Ansprüche 1-7, bei der der Fräskopf (2) mindestens zwei Schaufeln (13) aufweist, die im wesentlichen helixförmig angeordnet sind.
  9. Vorrichtung nach Anspruch 8, bei der jede Schaufel (13) an ihrer vorderen Seite, gesehen entlang der Richtung der Drehung, mindestens einen Schneidzahn (14) trägt.
  10. Vorrichtung nach einem der vorhergehenden Ansprüche, bei der der Fräskopf (2) teilweise über die Wände des Eimers (1) hinausragt.
  11. Vorrichtung nach einem der vorhergehenden Ansprüche, bei der der Sauganschluß der Pumpe (5) in den Boden (10) des Eimers (1) einmündet.
  12. Vorrichtung nach Anspruch 11, bei der der Sauganschluß (9) sich in dem Teil des Bodens nahe an der Wand befindet, die mit der Schneidkante (11) ausgebildet ist.
  13. Vorrichtung nach Anspruch 12, bei der die Pumpe (5) in einem Gehäuse (4) untergebracht ist, die Außenseite des Bodens des Eimers dem Gehäuse zugekehrt ist, und die Wand mit der Schneidkante (11) vom Gehäuse abgekehrt ist.
  14. Vorrichtung nach Anspruch 13, bei der die Ansaugseite der Pumpe (5) zentral in eine Stirnfläche des Gehäuses (4) eingesetzt und über ein Winkelrohr (8) mit dem Eimer (1) verbunden ist.
  15. Vorrichtung nach Anspruch 14, bei der der Eimer (1) und das Winkelrohr (8) beide an verschiedenen Stellen entlang der Umfangsrichtung des Gehäuses mit dem Gehäuse (4) bzw. der Ansaugseite der Pumpe (5) verbindbar sind.
  16. Vorrichtung nach Anspruch 15, bei der das Gehäuse (4) einen zylinderförmigen Mantel aufweist und der Eimer einen entsprechend gekrümmten Befestigungsflansch trägt, der am Gehäuse befestigt ist.
  17. Vorrichtung nach Anspruch 14, 15 oder 16, bei der das Gehäuse an der anderen Stirnfläche Einrichtungen (6) für die Befestigung an einen Kranarm trägt.
  18. Vorrichtung nach Anspruch 13, 14, 15, 16 oder 17, bei der Sensoreinrichtungen zum Messen der Winkelstellung des Eimers (1) relativ zur Horizontalen und/oder der Höhe des Eimers vorgesehen sind.
  19. Verfahren zum Betätigen einer Vorrichtung gemäß einem der vorhergehenden Ansprüche, welches das Anbringen des Eimers (1) mit seiner offenen Seite der Oberfläche oder der Stirnseite des zu räumenden Baggergutes zugekehrt, das Drehen des Fräskopfes (2) zum Abtragen des Baggergutes, und das Absaugen des abgetragenen Baggergutes aus dem Eimer umfaßt.
  20. Verfahren nach Anspruch 19 zum Betätigen der Vorrichtung gemäß einem der Ansprüche 13-18, welches das Ausrichten des Eimers (1) in der Weise, daß die Schneidkante (11) sich unterhalb des Fräskopfes befindet, umfaßt.
  21. Verfahren nach Anspruch 20, bei dem der Eimer mit der Schneidkante (11) gegen eine Stirnseite des Baggergutes gehalten und zum Teil durch die helixförmige Bewegung des Fräskopfes (2) vorgeschoben wird, während er gleichzeitig das Baggergut abträgt.
  22. Verfahren nach Anspruch 21, bei dem entlang der Vorschubrichtung das Paneel mit der Schneidkante (11) in einem Winkel von minus fünf Grad gegenüber der Horizontalen gehalten wird.
EP19950203198 1994-11-21 1995-11-21 Vorrichtung und Verfahren zum Wegnehmen von Baggergut Expired - Lifetime EP0712963B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9401939 1994-11-21
NL9401939A NL9401939A (nl) 1994-11-21 1994-11-21 Inrichting voor het verwijderen van baggermateriaal, alsmede werkwijze voor het bedrijven daarvan.

Publications (3)

Publication Number Publication Date
EP0712963A2 EP0712963A2 (de) 1996-05-22
EP0712963A3 EP0712963A3 (de) 1996-05-29
EP0712963B1 true EP0712963B1 (de) 1998-08-26

Family

ID=19864916

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19950203198 Expired - Lifetime EP0712963B1 (de) 1994-11-21 1995-11-21 Vorrichtung und Verfahren zum Wegnehmen von Baggergut

Country Status (3)

Country Link
EP (1) EP0712963B1 (de)
DE (1) DE69504279T2 (de)
NL (1) NL9401939A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1017525A3 (nl) * 2007-03-23 2008-11-04 Schots Roeland Inrichting voor het ruimen van grachten.
BE1017636A3 (nl) * 2007-06-08 2009-02-03 Schots Roeland Inrichting voor het ruimen van grachten.
EP1978161A3 (de) * 2007-03-23 2010-03-31 Roeland Schots Vorrichtung zur Reinigung und/oder Ausgrabung von Schlitzwänden.

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5232819B2 (ja) * 2010-02-26 2013-07-10 株式会社ハマダ 浚渫装置
NL2012302C2 (en) * 2014-02-21 2015-08-25 Ihc Holland Ie Bv Bottom leveller system.

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1484761A1 (de) * 1963-04-09 1969-04-30 Wilhelm Riedemann Kombinierter Saug- und Spuelbagger
US4052801A (en) * 1976-04-28 1977-10-11 Smith Leward N Dredging system and methods of dredging
NL169765C (nl) * 1978-12-06 1982-08-16 Konijn Machinebouw Nv Inrichting voor het losmaken en afvoeren van grond, in het bijzonder onder water.
JPS61261533A (ja) * 1985-05-13 1986-11-19 Penta Ocean Constr Co Ltd 後進浚渫可能な浚渫装置
DE3710283C2 (de) * 1987-03-28 1998-04-16 Zueblin Ag Einrichtung zum Abbau und Abtransport von kontaminiertem Erdreich
FR2635346B1 (fr) * 1988-08-12 1992-04-10 Provence Amenagement Region Pr Procede et dispositif immerge de curage de canaux en eau
JPH02243829A (ja) * 1989-03-17 1990-09-27 Toa Harbor Works Co Ltd 浚渫装置
NL9200368A (nl) * 1992-02-28 1993-09-16 Ihc Holland Nv Cutter-samenstel zoals voor montage aan de ladder van een baggerzuiger.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1017525A3 (nl) * 2007-03-23 2008-11-04 Schots Roeland Inrichting voor het ruimen van grachten.
EP1978161A3 (de) * 2007-03-23 2010-03-31 Roeland Schots Vorrichtung zur Reinigung und/oder Ausgrabung von Schlitzwänden.
BE1017636A3 (nl) * 2007-06-08 2009-02-03 Schots Roeland Inrichting voor het ruimen van grachten.

Also Published As

Publication number Publication date
NL9401939A (nl) 1996-07-01
DE69504279D1 (de) 1998-10-01
EP0712963A3 (de) 1996-05-29
DE69504279T2 (de) 1999-04-22
EP0712963A2 (de) 1996-05-22

Similar Documents

Publication Publication Date Title
EP1972724B1 (de) Kanalprofilierungs-Vorrichtung.
KR100813595B1 (ko) 콘크리트파일용 두부절단장치
EP0712963B1 (de) Vorrichtung und Verfahren zum Wegnehmen von Baggergut
JPS6110696A (ja) 井戸掘削装置と方法
WO1987005649A1 (en) Dredger
JP2615096B2 (ja) 掘孔方法
KR102231198B1 (ko) 흡입 이동식 준설장치
CN212534274U (zh) 一种环保绞吸挖泥船刮铲式清淤机具
CN212427305U (zh) 一种淤泥挖掘装置
CN210507587U (zh) 一种履带式竖井垂直挖泥系统
JPH09195269A (ja) 壁面ハツリ機
CN213571941U (zh) 一种道路桥梁施工基坑修补装置
JP2640419B2 (ja) 杭頭処理装置
JPH08120671A (ja) 地中杭の除去装置
CN219157677U (zh) 一种清底设备
JP2521275B2 (ja) 地中水平掘削・運搬装置
KR100481135B1 (ko) 강관 말뚝 내부 토사 제거 장치
JP7224933B2 (ja) 浚渫装置および浚渫方法
JP2872503B2 (ja) 浚渫装置
JPS62284818A (ja) 鋼管杭の打設工法
JPH0316925Y2 (de)
JPS5919207B2 (ja) 連続地中壁掘削工法及び装置
JP2798163B2 (ja) 浚渫装置
JP2856668B2 (ja) 高濃度浚渫装置
JPH09328984A (ja) 排土機構を備えたオーガ杭打機

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

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): BE DE GB NL

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): BE DE GB NL

17P Request for examination filed

Effective date: 19961016

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

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

17Q First examination report despatched

Effective date: 19970804

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): BE DE GB NL

REF Corresponds to:

Ref document number: 69504279

Country of ref document: DE

Date of ref document: 19981001

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: DE

Payment date: 20011129

Year of fee payment: 7

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

Ref country code: NL

Payment date: 20011130

Year of fee payment: 7

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

Ref country code: BE

Payment date: 20011203

Year of fee payment: 7

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

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

Ref country code: GB

Payment date: 20021101

Year of fee payment: 8

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: 20021130

BERE Be: lapsed

Owner name: *BALLAST NEDAM BAGGEREN B.V.

Effective date: 20021130

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: 20030601

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: 20030603

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

Effective date: 20030601

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: 20031121

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

Effective date: 20031121