EP0688956A1 - Device for a siphon for sewers - Google Patents

Device for a siphon for sewers Download PDF

Info

Publication number
EP0688956A1
EP0688956A1 EP95100334A EP95100334A EP0688956A1 EP 0688956 A1 EP0688956 A1 EP 0688956A1 EP 95100334 A EP95100334 A EP 95100334A EP 95100334 A EP95100334 A EP 95100334A EP 0688956 A1 EP0688956 A1 EP 0688956A1
Authority
EP
European Patent Office
Prior art keywords
vacuum container
air
pump
siphon
lifting
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
EP95100334A
Other languages
German (de)
French (fr)
Other versions
EP0688956B1 (en
Inventor
Peter Pommerenke
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.)
Individual
Original Assignee
Individual
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6521409&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0688956(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Publication of EP0688956A1 publication Critical patent/EP0688956A1/en
Application granted granted Critical
Publication of EP0688956B1 publication Critical patent/EP0688956B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04FPUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F10/00Siphons
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/20Siphon pipes or inverted siphons
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/02Stopping, starting, unloading or idling control
    • F04B49/025Stopping, starting, unloading or idling control by means of floats

Definitions

  • the invention relates to a device for siphon pipes for lifting wastewater above its level by air pressure, which are arranged as a bypass for sewer pipes to be renovated and cause a continuous energy-free conveying.
  • the object of the invention is to improve an arrangement of the generic type and to separate the air which arises, to ensure removal and to enable proper operation.
  • the siphon line is arranged in the region of its highest point with a vacuum container for collecting air from the wastewater, which is connected to a pump for extracting the absorbed air is, the pump can be controlled by sensors according to the collected air depending on the water level.
  • the vacuum container is connected to the lifting line via a connecting piece that narrows conically in the direction of the vacuum container.
  • a simple control is made possible in that the sensors for controlling the pump for the negative pressure are formed by two spaced-apart immersion electrodes.
  • a sewage pipe 1 to be renovated is arranged with a siphon pipe 2 as a bypass.
  • a vacuum container 3 is connected via a connecting piece 4.
  • the connecting piece 4 narrows conically in the direction of the vacuum container 3 and is connected via an interposed shut-off valve 5 to the vacuum container 3, which widens conically in this inlet area 11.
  • the vacuum container 3 is connected via a suction line 6 to a pump 7 for generating a vacuum.
  • tank electrodes 8, 9 are arranged in the vacuum tank 3, which detect a minimum and maximum fill level of the waste water and control the pump 7 for generating vacuum via an assigned control 10.
  • the air disturbing in the wastewater is fed to the vacuum tank 3 due to the ascending properties, whereby the wastewater collected in the vacuum tank 3 by vacuum is displaced.
  • the pump 7 is put into operation via the tank electrode 9, the air is removed and the maximum fill level is set again via the electrode 8 in the vacuum container 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Sewage (AREA)
  • Refuse Collection And Transfer (AREA)

Abstract

The siphon pipe (2) is connected at its highest point to an vacuum container (3) for the collection of air from the waste water. The container is connected to a pump (7) for air suction. The pump is controlled (10) via immersed level detecting electrodes (8,9), dependant upon the collected air. The container is connected to the siphon pipe via a connection part (4), which decreases in size. The sensors are formed by two dipped electrodes. <IMAGE>

Description

Die Erfindung bezieht sich auf eine Vorrichtung für Heberleitungen zum Heben von Abwasser über ihren Spiegel durch Luftdruck, die als Bypass für zu sanierende Sielleitungen angeordnet sind und eine kontinuierliche energielose Förderung bewirken.The invention relates to a device for siphon pipes for lifting wastewater above its level by air pressure, which are arranged as a bypass for sewer pipes to be renovated and cause a continuous energy-free conveying.

Anordnungen dieser Art sind für diesen Einsatzzweck bekannt. Es hat sich aber gezeigt, daß in der Praxis durch die mitgeführte Luft, insbesondere bei geringer Strömung, es zum Abriß der Förderung kommt. Hierbei sammeln sich in der Heberleitung Luftblasen, die den Hebereffekt unterbrechen. In diesem Fall wird dann über ein erneutes Ansaugen des Abwassers durch entsprechende Aggregate der Hebervorgang relativ aufwendig wieder in Betrieb gesetzt.Arrangements of this type are known for this purpose. It has been shown, however, that in practice, the air entrained, in particular when the flow is low, leads to a break in the delivery. Here, air bubbles collect in the lifter line, interrupting the lifter effect. In this case, the lifting process is then put back into operation in a relatively complex manner by means of appropriate aggregates by sucking in the waste water again.

Die Aufgabe der Erfindung ist es, eine gattungsgemäße Anordnung zu verbessern und die anfallende Luft zu separieren sowie eine Abführung zu gewährleisten und einen ordnungsgemäßen Betrieb zu ermöglichen.The object of the invention is to improve an arrangement of the generic type and to separate the air which arises, to ensure removal and to enable proper operation.

Die Lösung dieser Aufgabe erfolgt erfindungsgemäß dadurch, daß die Heberleitung im Bereich ihres höchsten Punktes mit einen Unterdruckbehälter zum Sammeln von Luft aus dem Abwasser angeordnet ist, der mit einer Pumpe zum Absaugen der aufgenommenen Luft verbunden ist, wobei die Pumpe über Sensoren entsprechend der gesammelten Luft wasserstandsabhängig steuerbar ist.This object is achieved according to the invention in that the siphon line is arranged in the region of its highest point with a vacuum container for collecting air from the wastewater, which is connected to a pump for extracting the absorbed air is, the pump can be controlled by sensors according to the collected air depending on the water level.

Hierdurch ist es möglich, energiearm die anfallende Luft zu separieren und eine kontinuierliche Abwasserförderung zu ermöglichen.This makes it possible to separate the resulting air with little energy and to enable continuous wastewater production.

Um einen Selbstreinigungsvorgang zu verbessern, ist vorgesehen, daß der Unterdruckbehälter über eine konisch in Richtung des Unterdruckbehälters sich verengendes Verbindungsstück mit der Heberleitung verbunden ist.In order to improve a self-cleaning process, it is provided that the vacuum container is connected to the lifting line via a connecting piece that narrows conically in the direction of the vacuum container.

Weiterhin wird vorgeschlagen, daß der Eintrittsbereich des Unterdruckbehälters nach dem Verbindungsstück sich in Richtung des Unterdruckbehälters erweitert.It is further proposed that the entry area of the vacuum container after the connecting piece widens in the direction of the vacuum container.

Eine einfache Steuerung wird dadurch ermöglicht, daß die Sensoren zur Steuerung der Pumpe für den Unterdruck durch zwei beabstandete Tauchelektroden gebildet sind.A simple control is made possible in that the sensors for controlling the pump for the negative pressure are formed by two spaced-apart immersion electrodes.

In der Zeichnung ist ein Ausführungsbeispiel einer Heberanlage für eine zu sanierende Abwasserleitung schematisch dargestellt.In the drawing, an embodiment of a lifting system for a sewage pipe to be renovated is shown schematically.

Hierbei ist eine zu sanierende Abwasserleitung 1 mit einer Heberleitung 2 als Bypass angeordnet. Es ist im Bereich des höchsten Punktes der Heberleitung 2 über ein Verbindungsstück 4 ein Unterdruckbehälter 3 angeschlossen.Here, a sewage pipe 1 to be renovated is arranged with a siphon pipe 2 as a bypass. In the area of the highest point of the lifting line 2, a vacuum container 3 is connected via a connecting piece 4.

Das Verbindungsstück 4 verengt sich konisch in Richtung des Unterdruckbehälters 3 und ist über ein zwischengeschaltetes Absperrventil 5 mit dem Unterdruckbehälter 3 verbunden, der sich in diesem Eintrittsbereich 11 konisch erweitert.The connecting piece 4 narrows conically in the direction of the vacuum container 3 and is connected via an interposed shut-off valve 5 to the vacuum container 3, which widens conically in this inlet area 11.

Der Unterdruckbehälter 3 ist über eine Absaugleitung 6 mit einer Pumpe 7 zur Erzeugung eines Unterdruckes verbunden. Zusätzlich sind Tankelektroden 8,9 im Unterdruckbehälter 3 angeordnet, die eine Minimal- und Maximalfüllhöhe des Abwassers erfassen und über eine zugeordnete Steuerung 10 die Pumpe 7 zur Unterdruckerzeugung ansteuern.The vacuum container 3 is connected via a suction line 6 to a pump 7 for generating a vacuum. In addition, tank electrodes 8, 9 are arranged in the vacuum tank 3, which detect a minimum and maximum fill level of the waste water and control the pump 7 for generating vacuum via an assigned control 10.

Die im Abwasser störende Luft wird durch die Aufstiegseigenschaften dem Unterdruckbehälter 3 zugeführt, wodurch das im Unterdruckbehälter 3 durch Unterdruck gesammelte Abwasser verdrängt wird. Nach Unterschreiten der Minimalfüllhöhe wird über die Tankelektrode 9 die Pumpe 7 in Betrieb gesetzt, die Luft abgeführt und die Maximalfüllhöhe über die Elektrode 8 im Unterdruckbehälter 3 wieder eingestellt. Hierdurch wird durch Abführung der Luft eine zuverlässige Förderung des Abwassers nach den Hebereffekt energiearm gewährleistet.The air disturbing in the wastewater is fed to the vacuum tank 3 due to the ascending properties, whereby the wastewater collected in the vacuum tank 3 by vacuum is displaced. After falling below the minimum fill level, the pump 7 is put into operation via the tank electrode 9, the air is removed and the maximum fill level is set again via the electrode 8 in the vacuum container 3. As a result, reliable discharge of the waste water after the lifting effect is ensured with low energy by removing the air.

Claims (4)

Vorrichtung für Heberleitungen zum Heben von Abwasser über ihren Spiegel durch Luftdruck, die als Bypass für zu sanierende Sielleitungen angeordnet sind und eine kontinuierliche energielose Förderung bewirken, dadurch gekennzeichnet, daß die Heberleitung (2) im Bereich ihres höchsten Punktes mit einen Unterdruckbehälter (3) zum Sammeln von Luft aus dem Abwasser angeordnet ist, der mit einer Pumpe (7) zum Absaugen der aufgenommenen Luft verbunden ist, wobei die Pumpe (7) über Sensoren (8,9) entsprechend der gesammelten Luft wasserstandsabhängig steuerbar ist.Device for lifting lines for lifting waste water above their level by air pressure, which are arranged as a bypass for sewer lines to be renovated and cause continuous energy-free conveying, characterized in that the lifting line (2) in the region of its highest point with a vacuum container (3) for Collecting air from the wastewater is arranged, which is connected to a pump (7) for extracting the absorbed air, the pump (7) being controllable in dependence on the water level via sensors (8, 9) according to the collected air. Vorrichtung für Heberleitungen nach Anspruch 1, dadurch gekennzeichnet, daß der Unterdruckbehälter (3) über eine konisch in Richtung des Unterdruckbehälters (3) sich verengendes Verbindungsstück (4) mit der Heberleitung (2) verbunden ist.Device for siphon lines according to claim 1, characterized in that the vacuum container (3) is connected to the siphon line (2) via a connecting piece (4) which narrows conically in the direction of the vacuum container (3). Vorrichtung für Heberleitungen nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Eintrittsbereich (11) des Unterdruckbehälters (3) nach dem Verbindungsstück (4) sich in Richtung des Unterdruckbehälters (3) erweitert.Device for siphon lines according to claim 1 or 2, characterized in that the inlet area (11) of the vacuum container (3) after the connecting piece (4) widens in the direction of the vacuum container (3). Vorrichtung für Heberleitungen nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Sensoren (8,9) zur Steuerung der Pumpe (7) für den Unterdruck durch zwei beabstandete Tauchelektroden gebildet sind.Device for siphon lines according to one of claims 1 to 3, characterized in that the sensors (8, 9) for controlling the pump (7) for the negative pressure are formed by two spaced-apart immersion electrodes.
EP95100334A 1994-06-24 1995-01-12 Device for a siphon for sewers Expired - Lifetime EP0688956B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4422127 1994-06-24
DE4422127A DE4422127C2 (en) 1994-06-24 1994-06-24 Lifter line

Publications (2)

Publication Number Publication Date
EP0688956A1 true EP0688956A1 (en) 1995-12-27
EP0688956B1 EP0688956B1 (en) 1998-09-09

Family

ID=6521409

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95100334A Expired - Lifetime EP0688956B1 (en) 1994-06-24 1995-01-12 Device for a siphon for sewers

Country Status (3)

Country Link
EP (1) EP0688956B1 (en)
AT (1) ATE170954T1 (en)
DE (2) DE4422127C2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108644158A (en) * 2018-04-09 2018-10-12 中建三局第建设工程有限责任公司 Automatic exhaust siphoning installation
CN111200931A (en) * 2017-10-20 2020-05-26 鲁冰机械制造露维贝宁有限公司 Automatically balanced poultry water distribution system
CN113530892A (en) * 2021-06-07 2021-10-22 新疆河润尚源科技有限公司 Siphon group and water purification equipment who constitutes thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19652585C2 (en) * 1996-12-17 2000-04-13 Bernhard Schmidt Device for venting a siphon line carrying a liquid

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60209700A (en) * 1984-04-03 1985-10-22 Maoka Sekkei:Kk Venting of gas in siphon pipeline in siphon type liquid take-out device
GB2239269A (en) * 1989-12-22 1991-06-26 North West Water Ltd Syphon arrangement suitable for dosing a filter in a sewage treatment plant

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE169886C (en) *

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60209700A (en) * 1984-04-03 1985-10-22 Maoka Sekkei:Kk Venting of gas in siphon pipeline in siphon type liquid take-out device
GB2239269A (en) * 1989-12-22 1991-06-26 North West Water Ltd Syphon arrangement suitable for dosing a filter in a sewage treatment plant

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 010, no. 066 (M - 461) 15 March 1986 (1986-03-15) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111200931A (en) * 2017-10-20 2020-05-26 鲁冰机械制造露维贝宁有限公司 Automatically balanced poultry water distribution system
CN108644158A (en) * 2018-04-09 2018-10-12 中建三局第建设工程有限责任公司 Automatic exhaust siphoning installation
CN113530892A (en) * 2021-06-07 2021-10-22 新疆河润尚源科技有限公司 Siphon group and water purification equipment who constitutes thereof

Also Published As

Publication number Publication date
ATE170954T1 (en) 1998-09-15
DE4422127A1 (en) 1996-01-11
EP0688956B1 (en) 1998-09-09
DE59503501D1 (en) 1998-10-15
DE4422127C2 (en) 1996-05-09

Similar Documents

Publication Publication Date Title
CN208883626U (en) A kind of oil field produced water treatment facilities
EP2660208B1 (en) Sewage treatment plant with siphon overflow
DE3412217C2 (en)
DE2456011A1 (en) DEVICE AND METHOD FOR MONITORING AND CONTROLLING THE FREEDOM OF HUGE MATERIAL FROM PELVIS OVERFLOW IN MECHANICAL SEPARATION PROCESSES FOR LIQUID-SOLID PHASES
CN101301584A (en) Tube-type sewage water micro-filter processing equipment
EP0688956A1 (en) Device for a siphon for sewers
CN208267068U (en) A kind of initial rainwater collection device
DE9208900U1 (en) Arrangement for cleaning waste water
JPH0773649B2 (en) Device for filtering liquid containing suspended particles
DE4114384C1 (en)
CN2194357Y (en) Waste water comprehensive purifying treatment equipment
CN108928948B (en) Filter cleaning system
CN208161184U (en) Water return filter and the sewage disposal system for using the device
DE3842860C2 (en) Process for treating waste water laden with emulsified light liquids with an additional intermediate stage
DE9410228U1 (en) Device for siphon pipes
CN201223773Y (en) Tube-type sewage water micro-filter processing equipment
DE19606577A1 (en) Service water system for multiple use of drinking water
DE19718499B4 (en) Device for solids and sludge removal in sedimentation basins
CN108298659A (en) The processing system and technique of oilfield filter backwash sewage and sludge condensation supernatant
CN108993019A (en) A kind of waste water environmental protection collection system
CN209367828U (en) A kind of sewage-treatment plant of PLC control
KR200299789Y1 (en) a purification device of washing water
DE69803559T2 (en) DEVICE FOR REGULATING A FLUID FLOW
DE3719068C2 (en) Device for pumping waste water
DE230585C (en)

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 CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

17P Request for examination filed

Effective date: 19951124

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: 19980225

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): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;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.SCRIBED TIME-LIMIT

Effective date: 19980909

Ref country code: GR

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

Effective date: 19980909

Ref country code: ES

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

Effective date: 19980909

REF Corresponds to:

Ref document number: 170954

Country of ref document: AT

Date of ref document: 19980915

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 59503501

Country of ref document: DE

Date of ref document: 19981015

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: GERMAN

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

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19981209

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19981209

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19981214

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19981119

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

Ref country code: LU

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

Effective date: 19990112

ET Fr: translation filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

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

Effective date: 19990131

Ref country code: CH

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

Effective date: 19990131

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

Ref country code: IE

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

Effective date: 19990504

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

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

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

Ref country code: MC

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

Effective date: 19990731

26N No opposition filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: DE

Payment date: 20001124

Year of fee payment: 7

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

Ref country code: FR

Payment date: 20001218

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: 20010103

Year of fee payment: 7

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

Ref country code: GB

Payment date: 20010104

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: 20010129

Year of fee payment: 7

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

Ref country code: AT

Payment date: 20010131

Year of fee payment: 7

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

Ref country code: DE

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

Effective date: 20010329

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

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: 20020112

Ref country code: AT

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

Effective date: 20020112

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: 20020131

BERE Be: lapsed

Owner name: POMMERENKE PETER

Effective date: 20020131

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: 20020801

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

Effective date: 20020112

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: 20020930

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

Effective date: 20020801

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST