EP0305415B1 - Mobile pumpanlage - Google Patents

Mobile pumpanlage Download PDF

Info

Publication number
EP0305415B1
EP0305415B1 EP88901558A EP88901558A EP0305415B1 EP 0305415 B1 EP0305415 B1 EP 0305415B1 EP 88901558 A EP88901558 A EP 88901558A EP 88901558 A EP88901558 A EP 88901558A EP 0305415 B1 EP0305415 B1 EP 0305415B1
Authority
EP
European Patent Office
Prior art keywords
screw conveyor
arrangement according
arrangement
loading shovel
sludge
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
EP88901558A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0305415A1 (de
Inventor
Johannes Kleer
Klaas Ten Hove
Wilhelm Beyer
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.)
Saarbergwerke AG
Original Assignee
Saarbergwerke 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
Application filed by Saarbergwerke AG filed Critical Saarbergwerke AG
Priority to AT88901558T priority Critical patent/ATE63350T1/de
Publication of EP0305415A1 publication Critical patent/EP0305415A1/de
Application granted granted Critical
Publication of EP0305415B1 publication Critical patent/EP0305415B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
    • E21D9/13—Devices for removing or hauling away excavated material or spoil; Working or loading platforms using hydraulic or pneumatic conveying means
    • 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
    • E02F3/34—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 with bucket-arms, i.e. a pair of arms, e.g. manufacturing processes, form, geometry, material of bucket-arms directly pivoted on the frames of tractors or self-propelled machines
    • E02F3/3405—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 with bucket-arms, i.e. a pair of arms, e.g. manufacturing processes, form, geometry, material of bucket-arms directly pivoted on the frames of tractors or self-propelled machines and comprising an additional linkage mechanism
    • 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
    • E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
    • E02F3/407—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with ejecting or other unloading device
    • 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

Definitions

  • the invention relates to a device for conveying sludge, in particular for cleaning the swamp areas of underground mining, i.e. for picking up the sludge from the bottom and for intermediate transport underground, with a moving device with a clearing blade and a pump which is connected to a delivery line.
  • the wastewater generated in a shaft system is collected in a swamp section.
  • Such swamp areas are excavated in the area or below the deepest bottom and serve only to collect the pit water, which is pumped from here to the surface with the help of pumps.
  • the heavy parts collect in the swamp area (s), i.e. the sludge on the floor, so that after pumping out such a sump line, the sludge accumulated is sucked off the bottom and then usually brought to the surface via trolleys.
  • a device is known from the works newspaper of Ruhrkohle Aktiengesellschaft 2/85 (BAG Niederrhein) with which the sludge is pushed together under water and then pumped out.
  • the dozer blade is assigned to a mobile bridge and is pivotally mounted on it, whereby an eccentric screw pump hangs in front of the dozer blade, which sucks off the collected sludge and, after further treatment, ie dewatering, e.g. by centrifuging, transfers large trolleys, via which the material is brought to the surface.
  • dewatering e.g. by centrifuging
  • the disadvantage of this known device is first of all that it is arranged in a stationary manner in such a swamp section, ie it is not available for other work, for example another swamp section.
  • Another disadvantage is the large amount of work involved in the machine, and because of the relatively thin material, it is necessary to add a full-shell screw centrifuge. Only the treatment in this sling enables the subsequent one Transport in open 3000 l trolleys
  • the invention has for its object to provide a mobile sludge pick-up and transport device with which sludge with a high solids content can be manipulated.
  • the moving device is designed as a mobile unit and has a lifting and lowering loading shovel, on the rear wall of which a transversal transport screw is arranged on the inside, whose end of delivery is the opening of the suction pipe of the pump designed as a high-pressure piston pump, and that above the Transport screw a ramming device acting on the sludge in the screw and having a tamper is provided.
  • Such a pumping system or device can be used in many ways because it represents a mobile unit, that is to say it can be used both in the proposed swamp section and in other swamp sections or in other areas.
  • the lifting and lowering loading shovel enables the sludge to be picked up safely and fed via the screw conveyor on the rear wall to the high-pressure piston pump with controlled valves, via which the sludge is then fed directly to the trolley via the delivery line.
  • the ramming unit ensures that optimum mixing of residual water and solid remaining in the solid is achieved and the formation of bridges is prevented. As a result, a sludge with a high solids content reaches the high-pressure piston pump and then the conveyor car.
  • the screw conveyor also ensures that the high-pressure piston pump is evenly supplied with sludge, so that a uniform uninterrupted Volume flow and thus an even load on the pump is ensured.
  • the controlled valves of the high-pressure piston pump ensure high performance and smooth operation.
  • this device also has the advantage that it represents a compact overall size, which can therefore also be used in swamp sections of different dimensions.
  • such a device can also be used, for example, to transport sewage sludge above ground. It is generally not necessary to dilute the sludge with the addition of water, since the material that is specifically fed to the pump is safely removed.
  • the loading shovel is rotatably arranged on the free end of a support arm, which in turn is pivotally mounted on the displacement device. In this way, the loading shovel can be brought into a position where it can safely absorb the mud lying on the track sole, regardless of how thick the layer is. The loading shovel lies effectively on the track bottom and thus pushes safely into or under the mud layer.
  • the sludge is picked up particularly evenly and, on the other hand, very securely because, according to the invention, the loading shovel is held via a link mechanism formed by the support arm and supporting ropes, the supporting ropes of the loading shovel being attached with a variable inclination by means of turnbuckles.
  • the tip of the loading shovel automatically hits the track bottom, the sludge layer then being pressed into the shovel by moving the moving device forward. Since the loading shovel is suspended from the support cables, it can advantageously avoid a resistance or work on uneven ground.
  • the loading shovel is held optimally in each case via the handlebar gear so that the sludge is safely taken up and pushed through to the screw conveyor in order to be grasped and transported by it.
  • the link mechanism is completed to a four-bar linkage in that the support cables run above the support arm and are articulated accordingly above its pivot points on the moving device and on the loading shovel.
  • the loading shovel thus forms, on the one hand, and, on the other hand, the spacer between the pivot points which are associated with the processing device, the four-bar joint together with the support arm and support cable.
  • Such a four-bar linkage is stable and precisely adjustable, so that overall a very advantageous device is created.
  • the support ropes are connected to the moving device via fixed tabs. You can safely record any "blows” that occur during commuting or seesawing.
  • a screw conveyor with a high conveying capacity is created in that the rear wall of the loading shovel and the loading surface are formed to form a tube receiving the screw conveyor, the tube having a wide longitudinal slot provided towards the open side of the loading shovel.
  • the sludge is pushed into the pipe or into the transport screw via the longitudinal slot, captured by it and transported further, the optimum mixing of water and solids being guaranteed via the individual rammers of the ramming unit and, at the same time, a high degree of filling for the transport screw.
  • the longitudinal slot is in the area of the suction opening interrupted, ie the pipe is closed here in order not to hinder the suction power of the pumps. For the same reason, the screw conveyor has no helix in this area.
  • the special shape of the casing of the screw conveyor is achieved on the one hand by the design of the rear wall and on the other hand that a wedge-shaped attachment is arranged on the loading surface in front of the screw conveyor, the rear wall of the screw conveyor being bent accordingly.
  • the suction pipe is arranged with its opening in the middle of the loading shovel and that the transport screw is equipped on both sides with oppositely working coils.
  • the screw conveyor is driven by a drive arranged on one side.
  • the sludge is advantageously mixed and made flowable by the movement in the screw conveyor, so that it can then be advantageously transported further via the pump.
  • rammers are, as already mentioned above, distributed over the length of the screw conveyor. These fulfill their function in that they are semicircularly curved and are assigned to a shaft designed as a crankshaft with a connecting rod, which runs above the rear wall and the tamper foot is configured in the longitudinal slot to reach close to the transport screw. It may be advantageous if the shaft is connected to the drive of the screw conveyor, preferably via a second outlet.
  • the transport screw is assigned an additional nozzle, preferably in the form of a tube equipped with openings and nozzles, which runs above the longitudinal slot. This makes it possible to specifically dilute the sludge so that it reaches the pump with an approximately 75% concentration.
  • the device according to the invention obtains mobility particularly when the traversing device is a crawler track. It is similarly mobile and location-independent if the moving device is formed by transport trolleys which can be moved on an EMS carrier, the sludge pick-up and sludge transport device being attached to the actual moving device in both cases.
  • the traversing device can be moved freely on the track floor and can therefore also be used at any other location, while the cats that can be moved on the EMS rail must be taken into account on routes where appropriate rails are or can be laid .
  • the device is therefore very versatile and, as already mentioned, can be used advantageously not only underground but also in the surface area.
  • the invention is characterized in particular by the fact that a device is created with which it is possible to safely take up the sludge deposited in the bottom sections, to feed it to a pump with a high solids concentration and well mixed, and to transfer it from this pump to the trolley or to the shaft to bring from where the sludge is then transported on trolleys. It is particularly advantageous that such a device allows a swamp section to be cleared and cleaned in a very short time without further treatment.
  • the sludge material has a solids content of up to 75%, so that the sludge even is ultimately transportable on conveyor belts.
  • the pump system (1) shown in FIGS. 1 and 2 consists of the displacement device (2), here a crawler track (3), which can be moved on the track base (5) connected to a delivery line (4).
  • the delivery line (4) is led up behind the moving device (2), for example, to a rigid delivery line installed at the top of the line and is attached there via a connection piece.
  • the delivery line (4) itself is, for example, a flexible hose.
  • a loading shovel (7) is connected to the crawler chassis (3) or the displacement device (2) via a support arm (6), the support arm (6) simultaneously carrying a pump (8), via which the in the loading shovel (7) collected goods are sucked through the suction pipe (9) and then pressed into the delivery line (4).
  • This material is sludge with solid particles of different sizes.
  • the suction pipe (9) ends in the area of the transport screw (10), which is arranged lying in the loading shovel (7) along its longitudinal axis. At the funding endpoint (11) the suction pipe end (12) is arranged with its opening (13), so that the material brought in by the screw conveyor (10) is advantageously mixed and mixed into the pump (8) designed as a high-pressure piston pump. Because of this even mixture, there is even and high promotion.
  • the screw conveyor (10) is rotated by the drive (15), the screw conveyor (10) rotating in a tube (18) formed by the rear wall (16) and the loading surface (17) of the loading shovel (7).
  • This tube (18) has a longitudinal slot (19) through which the sludge enters the tube (18) in order to then be moved forward by the screw conveyor (10) in the direction of the conveyor end point (11) and thus the suction tube (9).
  • a ramming unit (20) which has several rammers (21) distributed over the length of the loading shovel (7), acts in the longitudinal slots (19).
  • This tamper (21) are rotatably connected to a shaft (22 ') designed as a crankshaft (22') with a connecting rod (22 ⁇ ) and arranged above the rear wall (16).
  • the shaft (22) can be connected to the drive (15) via the second output (23) in such a way that the rammers (21) are raised and lowered one after the other.
  • an optimal mixing of water and solids is achieved.
  • an additional nozzle (25) can be switched on, which runs above the longitudinal slot (19) in the form of a water pipe, in which holes, not shown here, are formed with nozzles.
  • Fig. 3 illustrates that the tubular rear wall (16) and a wedge-shaped attachment (30) on the loading surface (17) through its curved rear wall (31) create an advantageous cladding tube (18) for the screw conveyor (10) .
  • the wedge-shaped attachment (30) can optionally be moved slightly on the loading surface (17) so that the volume of the sludge to be transported by the screw conveyor (10) can be changed slightly, depending on its solids concentration. It is easier to adjust the speed of the screw conveyor.
  • the inclination of the loading shovel (7) can be changed in a simple and expedient manner via the support cables (33, 34) or turnbuckles arranged therein. These support ropes run essentially parallel to the support arm (6) and are also articulated to the moving device (2) and the loading shovel (7). Together with the loading shovel on the one hand and the moving device (2) on the other hand, they thus form a four-bar linkage via which a very stable holder for the loading shovel (7) is created.
  • the pivot points (35) of the support ropes (33, 34) lie above the pivot points (36 and 37) of the support arm (6) and at a distance therefrom, with fixed tabs (38) on the crawler track (3) or the displacement device (2) , 39) are provided, on which the end of the support cables (33, 34) are attached.
  • the inclination of the loading shovel (7) can be varied by operating the turnbuckles.
  • Fig. 1 illustrates the rest by the dash-dotted line, which position the loading shovel (7) assumes when the track sole (5) is swinging.
  • the support arm (6) is pivoted or supported at the same time via the hydraulic cylinder (40) which is pivotably articulated both on the crawler track (3) and on the support arm (6).
  • 2 shows the path of the sludge picked up by the loading shovel (7) by means of arrows (43, 44, 45). 2 shows the arrangement of the various tamper (21, 41, 42) with their tamper feet (26) each of the same design. It is clear here that the tamper feet (26, 26 ', 26 ⁇ ) overall can largely cover or influence the longitudinal slot (19), so that bridging is reliably prevented.
  • a shut-off valve (47) is provided in the suction pipe (9) in front of the pump (8) and a fresh water valve (46) is provided on the pump (8). These are indicated accordingly in FIG. 1. With the shut-off valve (47) closed, the pump (8) and the downstream delivery line can be rinsed and cleaned with fresh water before a break in operation. It is also advantageous to fill the pump (8) with fresh water before starting again in order to facilitate the starting of the pump (8).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Treatment Of Sludge (AREA)
  • Screw Conveyors (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
EP88901558A 1987-02-21 1988-02-17 Mobile pumpanlage Expired - Lifetime EP0305415B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88901558T ATE63350T1 (de) 1987-02-21 1988-02-17 Mobile pumpanlage.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873705598 DE3705598A1 (de) 1987-02-21 1987-02-21 Mobile pumpanlage
DE3705598 1987-02-21

Publications (2)

Publication Number Publication Date
EP0305415A1 EP0305415A1 (de) 1989-03-08
EP0305415B1 true EP0305415B1 (de) 1991-05-08

Family

ID=6321484

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88901558A Expired - Lifetime EP0305415B1 (de) 1987-02-21 1988-02-17 Mobile pumpanlage

Country Status (6)

Country Link
US (1) US4934874A (enrdf_load_stackoverflow)
EP (1) EP0305415B1 (enrdf_load_stackoverflow)
JP (1) JPH01502439A (enrdf_load_stackoverflow)
DE (2) DE3705598A1 (enrdf_load_stackoverflow)
RU (1) RU1782258C (enrdf_load_stackoverflow)
WO (1) WO1988006211A1 (enrdf_load_stackoverflow)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5146699A (en) * 1991-12-05 1992-09-15 Ellicott Machine Corporation Auger dredge specially adapted to removal of toxic sediment
US6635176B1 (en) * 2001-10-29 2003-10-21 Gabriel L. Lorente Water conservation apparatus
CN100510321C (zh) * 2005-04-15 2009-07-08 中国矿业大学 矿井水仓细煤泥自动清挖处理方法及设备
EP1884601A1 (en) * 2006-08-04 2008-02-06 Lucio Paolo Emilio Oggiano Apparatus for beach feeding
BE1017516A3 (nl) * 2007-03-20 2008-11-04 Boxel Nv Van Verbeterde inrichting voor het profileren van grachten.
CN103382853B (zh) * 2013-07-30 2015-07-15 西南交通大学 用于解决隧道局部突发涌水的缓冲系统及控制方法
CN108517909B (zh) * 2018-03-22 2019-09-10 湖北亘华工科有限公司 用于人工顶管后的渣土自动转运系统及方法
CN109736885B (zh) * 2019-03-14 2024-04-02 中铁六局集团有限公司 隧道用抽水装置
CN113236358A (zh) * 2021-04-24 2021-08-10 中国煤炭科工集团太原研究院有限公司 一种矿用自动排水机器人
CN113898401B (zh) * 2021-09-09 2024-01-26 上海申传电气股份有限公司 一种井下电机车用云-车-轨协同的智能管控系统

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2952083A (en) * 1956-07-27 1960-09-13 John H Forkner Dredge construction
US3122398A (en) * 1961-12-06 1964-02-25 Augustine J Tucker Material handling apparatus
US3362752A (en) * 1965-08-17 1968-01-09 Joy Mfg Co Mining apparatus and method
SE343275B (enrdf_load_stackoverflow) * 1966-01-14 1972-03-06 Tokyo Pulp Co Ltd
DE2432286C3 (de) * 1974-07-05 1978-04-06 Karl-Friedrich 4006 Erkrath Schweitzer Saugkopf für das Saugrohr eines Saugbaggers
US3959897A (en) * 1974-12-09 1976-06-01 May William P Combination vibrating cutter head and crusher
FR2399373A1 (fr) * 1977-08-03 1979-03-02 Emily Sa Ets Dispositif a benne de chargement et distribution de produits ensiles, adaptable sur un tracteur agricole
NL168578C (nl) * 1978-03-02 1982-04-16 Ihc Holland Nv Sleepkop voor een zuigbaggerinrichting.
DE3402269C2 (de) * 1984-01-24 1986-07-31 Gewerkschaft Uchte -Torfwerke-, 3079 Uchte Vorrichtung zur Gewinnung von unter Druck formbaren Materialien
US4631844A (en) * 1985-07-15 1986-12-30 Deal Troy M Hydraulic shovel dredge system
DE3605448A1 (de) * 1986-02-20 1987-08-27 Ruhrkohle Ag Vorrichtung zur hereingewinnung und abfoerderung geologischer formationen im untertagebetrieb
US4785560A (en) * 1987-01-16 1988-11-22 R. A. Hanson Company, Inc. Continuous excavating apparatus

Also Published As

Publication number Publication date
DE3862718D1 (de) 1991-06-13
JPH01502439A (ja) 1989-08-24
DE3705598C2 (enrdf_load_stackoverflow) 1989-09-28
DE3705598A1 (de) 1988-10-20
RU1782258C (ru) 1992-12-15
US4934874A (en) 1990-06-19
WO1988006211A1 (fr) 1988-08-25
EP0305415A1 (de) 1989-03-08

Similar Documents

Publication Publication Date Title
EP0305415B1 (de) Mobile pumpanlage
DE2417689A1 (de) Verfahren und anlage zur kontinuierlichen und regelbaren schlammabsaugung aus einem klaerbecken
EP0815912B1 (de) Verfahren zum Abräumen von Schwimmstoffen und Räumvorrichtung
EP0052270A1 (de) Vorrichtung zur Reinigung eines Siels mit geschlossenem Kanalquerschnitt von nicht schwebefähigen Ablagerungen
DE2331487C2 (de) Gerät für das Baggern von Erzknollen auf dem Meeresboden
DE3233597A1 (de) Eimerradbagger
DE29719508U1 (de) Anbau-Kehrvorrichtung mit Aufnahmeeinrichtung
DE3524463A1 (de) Fahrbare lademaschine
EP0988450B1 (de) Zweizylinderdickstoffpumpe
DE2355831C3 (de) Saugbaggervorrichtung zum Fördern von Schüttgütern
DE3011578C2 (de) Einrichtung zum maschinellen Abteufen von seigeren Schächten
DE2430459C3 (de) Gewinnungs- und Lademaschine für den Tunnel- und Streckenvortrieb u.dgl., insbesondere für Rohrvorpreßbetriebe
DE3621058C2 (enrdf_load_stackoverflow)
DE19621136B4 (de) Hebevorrichtung für Restmaterial wie Restbeton o. dgl.
DE2645400A1 (de) Vorrichtung zum aufbringen von strassenbelag
DE2800628A1 (de) Laengsraeumer fuer langsandfaenge von klaeranlagen
DE3203939A1 (de) Uebergabevorrichtung an teilschnittmaschinen
DE1634721A1 (de) Bagger
DE2840280B2 (de) Einrichtung zum trockenen Auffahren von Tunneln im Rohrvorpreßverfahren
DE1634722C3 (de) Bagger zum Abtragen von Material von einer Böschung
DE19715816C1 (de) Vorrichtung zum Aufnehmen und Behandeln eines Schmutzsubstrats
DE19852624A1 (de) Fördervorrichtung und Mischfahrzeug mit einer Fördervorrichtung
DE9419910U1 (de) Anordnung für oder an einem Kabelpflug
DE397193C (de) Abfoerderung des im Grubenbetriebe gewonnenen Haufwerks
DE3934079A1 (de) Pumpendruckleitung fuer sumpfraeumgeraete

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: 19881006

AK Designated contracting states

Kind code of ref document: A1

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

17Q First examination report despatched

Effective date: 19900628

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

REF Corresponds to:

Ref document number: 63350

Country of ref document: AT

Date of ref document: 19910515

Kind code of ref document: T

ITF It: translation for a ep patent filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
ET Fr: translation filed
REF Corresponds to:

Ref document number: 3862718

Country of ref document: DE

Date of ref document: 19910613

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: GB

Payment date: 19941205

Year of fee payment: 8

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

Ref country code: AT

Payment date: 19950131

Year of fee payment: 8

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

Ref country code: FR

Payment date: 19950221

Year of fee payment: 8

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

Ref country code: NL

Payment date: 19950228

Year of fee payment: 8

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

Ref country code: BE

Payment date: 19950301

Year of fee payment: 8

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

Ref country code: GB

Effective date: 19960217

Ref country code: AT

Effective date: 19960217

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

Ref country code: BE

Effective date: 19960228

BERE Be: lapsed

Owner name: SAARBERGWERKE A.G.

Effective date: 19960228

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

Ref country code: NL

Effective date: 19960901

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

Effective date: 19960217

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

Ref country code: FR

Effective date: 19961031

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

Effective date: 19960901

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: DE

Payment date: 19970419

Year of fee payment: 10

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: 19981103

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: 20050217