EP0061756A1 - Dispositif pour le traitement de surface de constructions et de navires - Google Patents

Dispositif pour le traitement de surface de constructions et de navires Download PDF

Info

Publication number
EP0061756A1
EP0061756A1 EP82102621A EP82102621A EP0061756A1 EP 0061756 A1 EP0061756 A1 EP 0061756A1 EP 82102621 A EP82102621 A EP 82102621A EP 82102621 A EP82102621 A EP 82102621A EP 0061756 A1 EP0061756 A1 EP 0061756A1
Authority
EP
European Patent Office
Prior art keywords
nozzle
pressure
shunt
outlet nozzle
compressed gas
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
EP82102621A
Other languages
German (de)
English (en)
Other versions
EP0061756B1 (fr
Inventor
Uwe Richter
Hans Kellershofen
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.)
GKSS Forshungszentrum Geesthacht GmbH
Lorenz GmbH
H LORENZ GmbH
Original Assignee
GKSS Forshungszentrum Geesthacht GmbH
Lorenz GmbH
H LORENZ GmbH
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 GKSS Forshungszentrum Geesthacht GmbH, Lorenz GmbH, H LORENZ GmbH filed Critical GKSS Forshungszentrum Geesthacht GmbH
Priority to AT82102621T priority Critical patent/ATE11233T1/de
Publication of EP0061756A1 publication Critical patent/EP0061756A1/fr
Application granted granted Critical
Publication of EP0061756B1 publication Critical patent/EP0061756B1/fr
Expired legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B59/00—Hull protection specially adapted for vessels; Cleaning devices specially adapted for vessels
    • B63B59/06—Cleaning devices for hulls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
    • B05B7/1481—Spray pistols or apparatus for discharging particulate material
    • B05B7/1486—Spray pistols or apparatus for discharging particulate material for spraying particulate material in dry state
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
    • B24C7/0046—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier
    • B24C7/0069—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier with means for preventing clogging of the equipment or for preventing abrasive entering the airway

Definitions

  • the invention relates to a device for the surface treatment of structures and ships, which can also be carried out under water, with a cleaning, preserving or coating blasting agent which is blasted onto the surface to be treated with a compressed gas stream via an at least partially flexible line leading to the workplace and provided with an outlet nozzle.
  • Compressed air blasting as free blasting is a proven method for surface treatment of the blasting material.
  • the method requires a compressor as a compressed air source, a compressed air dryer, a compressed air filter, a blasting agent container for metering in the blasting agent and a hose line with a nozzle, which is usually a Laval nozzle.
  • the performance of the process is determined by the parameter field air Delivery quantity of the compressor depending on the required final pressure, abrasive throughput, hose length, pressure in front of the nozzle and nozzle size.
  • typical working values under normal conditions are: 8 mm nozzle diameter, 25o mm distance from the surface of the blasting material and 8o mm blasting spot diameter, corresponding to about 5ooo mm 2 Beam area.
  • the abrasive throughput depends on the required surface quality. Understandably, less abrasive is required for cleaning than to achieve a bare metal surface with a certain roughness depth.
  • the object of the invention is to provide an improved device which, based on the prior art described above, gives the possibility of using such blasting methods with higher efficiency.
  • the outlet nozzle which is designed in a manner known per se as a Laval nozzle, has a funnel-shaped, an elongated paraboloid-shaped interior space surrounding nozzle attachment is provided.
  • the shunt provided according to the invention can be regulated so that the line leading to the underwater work station and the nozzle can be kept dry and free of water even in times without blasting agent supply.
  • a relatively low excess pressure is sufficient for the compressed gas passed through the shunt, which ensures that the compressed gas bubbles out at all times at the free end of the outlet nozzle and thereby prevents water from entering.
  • the blasting system shown in Fig. 1 contains a large part of conventional components. These conventional components include a compressor 1, which feeds the compressed air supply line 4 via a water separator 2 and an air filter 3.
  • a pressure measuring point 5 Between the compressor 1 and the water separator 2 there is a pressure measuring point 5 and a shut-off valve 6.
  • the blasting agent container 2o containing the blasting agent with a closable refill opening 21, a line 22 which pressurizes the blasting agent container and is provided with a control valve, which leads to the Supply line 4 is connected and also a pressure relief valve 23.
  • the refill opening 21 When the refill opening 21 is open, the blasting agent to be used for cleaning, preserving or coating can be refilled from a storage container 24 via a feed line 25 or a funnel.
  • the blasting agent container 24 contains quartz sand, corundum, copper slag, natural or artificial mineral granules, cork or the like.
  • blasting agents can also be used that have recently been used because of the danger to the respiratory tract of the worker operating the device may no longer be used or may only be used under special protective conditions.
  • connection of the compressed air supply 4 to a blasting hose 8 leading to the work station, which ends at an outlet nozzle 9, which is preferably designed as a Laval nozzle, is also conventional.
  • a nozzle attachment 12 is attached to the Laval nozzle 9 connected.
  • a sleeve 10 which overlaps the free end of the nozzle and is held releasably and interchangeably with screws 11 is used to fasten the nozzle attachment 12.
  • the funnel-shaped nozzle extension 12 encloses an elongated paraboloid-shaped interior and has a length which is essentially the required working distance between Laval nozzle 9 and the corresponding surface 5o corresponds. For a nozzle attachment with a 5o mm outlet diameter, for example, this length is approximately 25o mm.
  • a shunt control 3o is provided according to the invention.
  • This shunt control 3o is connected on the inlet side via a line 31 to the outlet of the air filter 3 and on the outlet side via a control valve 32 to a part of the supply line 4 located downstream of the blasting agent container.
  • the line system 31-3o-32 thus bridges the part of the supply line 4 in which the blasting agent is fed into the supply line 4 via a discharge valve 26.
  • the compressed gas - preferably air - discharged into the blasting hose 8 via the shunt must have a pressure which is slightly above the water pressure at the place of use 41.
  • a control line 36 leads from the shunt 3o to the underwater work station.
  • the pressure detected in the shunt 3o at a pressure measuring point 38 directly influences a control valve 35 of the shunt and adjusts it so that compressed air is constantly emitted in small quantities at the jet nozzle attachment 12.
  • additional pressure gauges 33 and 34 can be provided in the shunt control arranged above water in order to be able to read the normal working pressure and the reduced pressure in the shunt.
  • the blasting device can be switched on and off in the simplest possible manner by the diver at the underwater work station 41, there is a button 51 next to the blasting nozzle 9, with which a signal line 52 detects a water-borne nozzle Control unit 53 can be operated.
  • the control unit 53 is used to switch on the blasting agent supply, ie the control unit 53 acts directly on the metering valve 26 of the blasting agent container 20 or, if this is permanently set, on the main shut-off valve 7 of the compressed air supply line 4. It is also possible to act on the shunt 3o with the control unit 53. As a rule, however, the shunt is left open, so that water cannot penetrate at the jet nozzle attachment when the blasting agent addition is switched on and off.
  • the device according to the invention leads to a safe and economical above- and underwater working method for standard-compliant surface treatment with a high degree of purity and required surface roughness while at the same time substantially increasing the area coverage and reducing the abrasive consumption.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Nozzles (AREA)
  • Prevention Of Fouling (AREA)
  • Steroid Compounds (AREA)
  • Special Spraying Apparatus (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
EP82102621A 1981-04-01 1982-03-29 Dispositif pour le traitement de surface de constructions et de navires Expired EP0061756B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82102621T ATE11233T1 (de) 1981-04-01 1982-03-29 Vorrichtung zur oberflaechenbehandlung von bauwerken und schiffen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3113028A DE3113028C2 (de) 1981-04-01 1981-04-01 Vorrichtung zur Oberflächenbehandlung von Unterwasserbauwerken und Schiffen
DE3113028 1981-04-01

Publications (2)

Publication Number Publication Date
EP0061756A1 true EP0061756A1 (fr) 1982-10-06
EP0061756B1 EP0061756B1 (fr) 1985-01-16

Family

ID=6128991

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82102621A Expired EP0061756B1 (fr) 1981-04-01 1982-03-29 Dispositif pour le traitement de surface de constructions et de navires

Country Status (9)

Country Link
US (1) US4545317A (fr)
EP (1) EP0061756B1 (fr)
JP (1) JPS58500438A (fr)
AT (1) ATE11233T1 (fr)
CA (1) CA1182632A (fr)
DE (2) DE3113028C2 (fr)
DK (1) DK149425C (fr)
ES (1) ES511025A0 (fr)
WO (1) WO1982003346A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989008007A1 (fr) * 1988-03-02 1989-09-08 Cleaning Technology Limited Nettoyage ou decoupage par abrasion
EP0694367A1 (fr) * 1994-07-26 1996-01-31 KEGLER Maurice, GARAGE ET SABLAGE INDUSTRIEL Machine de sablage à commande à distance
FR2723871A1 (fr) * 1994-08-25 1996-03-01 Busch Hubert Recipient pour produit de sablage, pour procedes de sablage par voie seche et humide.

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5200230A (en) * 1987-06-29 1993-04-06 Dunfries Investments Limited Laser coating process
US4830280A (en) * 1988-03-21 1989-05-16 Yankoff Gerald K Nozzle
US5484325A (en) * 1993-10-07 1996-01-16 Church & Dwight Co., Inc. Blast nozzle containing water atomizer for dust control
US5647201A (en) * 1995-08-02 1997-07-15 Trw Inc. Cavitating venturi for low reynolds number flows
WO1998006514A1 (fr) * 1996-08-09 1998-02-19 Alfred Kärcher GmbH & Co. Appareil de nettoyage haute pression
JPH1112721A (ja) * 1997-06-25 1999-01-19 Sony Corp ガス導入管及びこれを用いた磁気記録媒体の製造方法
AU3657497A (en) * 1997-07-11 1999-02-08 Waterjet International, Inc. Method and apparatus for producing a high-velocity particle stream
EA003436B1 (ru) 1997-07-11 2003-04-24 Уотерджет Текнолоджи, Инк. Способ получения высокоскоростного потока частиц и устройство для его осуществления
KR100504629B1 (ko) 1997-07-11 2005-08-03 워터제트 테크놀로지 인코퍼레이티드 고속 입자 스트림을 생성하기 위한 방법 및 장치
RU2123957C1 (ru) * 1998-06-18 1998-12-27 Макитрук Александр Александрович Способ подводной гидродинамической очистки корпусов судов и устройство для его осуществления
FR2783735B1 (fr) * 1998-09-29 2000-12-15 Patrick Loubeyre Dispositif pour la decontamination des surfaces au moyen d'un jet compose d'air, d'une matiere de projection a grains fins et d'un liquide
US6350185B1 (en) * 2000-02-09 2002-02-26 Space Systems/Loral, Inc. Grit blast nozzle for surface preparation of tube
RU2163877C1 (ru) * 2000-07-12 2001-03-10 Игнатьев Александр Викторович Инструмент для подводной очистки поверхности и сопло для инструмента
GB2372718B (en) * 2001-01-04 2004-07-14 Workinter Ltd Nozzle intended for the concentrated distribution of a fluid for scouring of surfaces
US6626738B1 (en) * 2002-05-28 2003-09-30 Shank Manufacturing Performance fan nozzle
US20030236489A1 (en) 2002-06-21 2003-12-25 Baxter International, Inc. Method and apparatus for closed-loop flow control system
EP2780117A2 (fr) * 2011-11-18 2014-09-24 Arizona Board of Regents, a Body Corporate of the State of Arizona acting for and on behalf of Arizona State University Système et procédé de distribution de jet liquide continu à l'échelle micrométrique
US10086497B1 (en) * 2012-04-27 2018-10-02 Chukar Waterjet, Inc. Submersible liquid jet apparatus
US9132529B2 (en) * 2012-12-07 2015-09-15 United Technologies Corporation Media blast nozzle with non-metallic threads
KR101305256B1 (ko) * 2012-12-18 2013-09-06 포항공과대학교 산학협력단 초고속 균일 나노 입자 생성 노즐, 생성 장치 및 생성 방법
US10081091B2 (en) * 2015-06-12 2018-09-25 Postech Academy-Industry Foundation Nozzle, device, and method for high-speed generation of uniform nanoparticles
CN113042295B (zh) * 2021-03-18 2022-12-06 中建三局绿色产业投资有限公司 一种水利水下补漆设备
EP4205905A1 (fr) * 2021-12-30 2023-07-05 SR Robotics Sp. z.o.o. Dispositif de coupe sous haute pression, sous-marin et commandé à distance, utilisant un produit abrasif, et un procédé de coupage et d'alimentation en matériau abrasif

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB392826A (en) * 1932-10-25 1933-05-25 Ronald Alfred Gilbert Improvements in or relating to blasting nozzles for surface treating plant
US3256642A (en) * 1963-11-07 1966-06-21 Rocco P Fonti Underwater sandblasting gun
FR2288564A1 (fr) * 1974-10-24 1976-05-21 Woma Maasberg Co Gmbh W Dispositif destine au traitement et notamment au nettoyage de surfaces
US4209952A (en) * 1977-09-12 1980-07-01 F. A. Hughes And Company Limited Underwater jet blasting apparatus

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR960172A (fr) * 1950-04-14
US2583726A (en) * 1948-01-26 1952-01-29 Chalom Joseph Aaron Nozzle
US2666279A (en) * 1949-01-17 1954-01-19 Chalom Joseph Aron Nozzle for expansion and compression of gases
US3070924A (en) * 1958-02-04 1963-01-01 Hastrup Herman Remote control system for fluid actuated mechanism
US3323257A (en) * 1964-08-20 1967-06-06 Rocco P Fonti Systems for underwater sandblasting
JPS4411597Y1 (fr) * 1965-09-30 1969-05-14
DE1804860A1 (de) * 1968-10-24 1970-05-06 Paul Hammelmann Presswasserbetriebene,selbsthaftende Reinigungsvorrichtung sowie Verfahren zur Flaechenreinigung
JPS5310023A (en) * 1976-07-14 1978-01-30 Honda Motor Co Ltd Ac generator
DE2848436C2 (de) * 1978-11-08 1982-05-06 Paul 4740 Oelde Hammelmann Vorrichtung zum Reinigen des Schiffbodens beim Eindocken eines Schiffes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB392826A (en) * 1932-10-25 1933-05-25 Ronald Alfred Gilbert Improvements in or relating to blasting nozzles for surface treating plant
US3256642A (en) * 1963-11-07 1966-06-21 Rocco P Fonti Underwater sandblasting gun
FR2288564A1 (fr) * 1974-10-24 1976-05-21 Woma Maasberg Co Gmbh W Dispositif destine au traitement et notamment au nettoyage de surfaces
US4209952A (en) * 1977-09-12 1980-07-01 F. A. Hughes And Company Limited Underwater jet blasting apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989008007A1 (fr) * 1988-03-02 1989-09-08 Cleaning Technology Limited Nettoyage ou decoupage par abrasion
EP0335503A3 (fr) * 1988-03-02 1990-01-31 Cleaning Technology Limited Nettoyage ou coupage par projection de particules abrasives
EP0694367A1 (fr) * 1994-07-26 1996-01-31 KEGLER Maurice, GARAGE ET SABLAGE INDUSTRIEL Machine de sablage à commande à distance
FR2723020A1 (fr) * 1994-07-26 1996-02-02 Kegler Maurice Machine de sablage a commande a distance
FR2723871A1 (fr) * 1994-08-25 1996-03-01 Busch Hubert Recipient pour produit de sablage, pour procedes de sablage par voie seche et humide.

Also Published As

Publication number Publication date
WO1982003346A1 (fr) 1982-10-14
DE3261903D1 (en) 1985-02-28
CA1182632A (fr) 1985-02-19
JPS58500438A (ja) 1983-03-24
US4545317A (en) 1985-10-08
DE3113028C2 (de) 1983-10-13
EP0061756B1 (fr) 1985-01-16
ATE11233T1 (de) 1985-02-15
DE3113028A1 (de) 1982-10-28
DK149425B (da) 1986-06-09
DK149425C (da) 1986-11-17
ES8303217A1 (es) 1983-02-01
DK427382A (da) 1982-10-14
ES511025A0 (es) 1983-02-01

Similar Documents

Publication Publication Date Title
EP0061756B1 (fr) Dispositif pour le traitement de surface de constructions et de navires
EP0582191B1 (fr) Dispositif et procédé pour le traitement de surfaces sensibles, notamment de sculptures
EP0171448B1 (fr) Dispositif et procédé pour le nettoyage de surfaces métalliques et en pierre
DE2724318A1 (de) Verfahren und anlage zum druckluftstrahlen
EP2151300A1 (fr) Dispositif et procédé de nettoyage d'objets à l'aide de neige carbonique
DE3527923C2 (fr)
EP0316264A2 (fr) Procédé et dispositif pour le dévernissage et l'enlèvement de couches de surfaces
DE1809677A1 (de) Strahlduese fuer Hochdruck-Strahleinrichtungen
DE102004023246B3 (de) Strahlverfahren
DE102006002653B4 (de) Trockeneisstrahlverfahren
DE3413576A1 (de) Verfahren und geraet zum abstrahlen von werkstuecken, bauwerken u.dgl. mittels eines mit einem koernigen strahlmittel beladenen traegerluftstromes
WO2018184798A1 (fr) Dispositif et procédé de découpage au jet de fluide haute pression
EP2785494B1 (fr) Procede de sablage humide de produits a sabler
DE3204861A1 (de) Verfahren und vorrichtung zum reinigen von fassaden oder dgl.
DE4201860C1 (fr)
DE3326602A1 (de) Vorrichtung zum druckluftstrahlen
DE19844668A1 (de) Bearbeitung von mittels thermischen Spritzens zu beschichtender Oberflächen
DE19909377C2 (de) Verfahren und Vorrichtung zum Schneiden und Abtragen von Hindernissen und Ablagerungen in nichtbegehbaren und begehbaren Rohren oder Kanälen
DE8109719U1 (de) Vorrichtung zur oberflaechenbehandlung von unterwasserbauwerken und schiffen
DE102014114868A1 (de) Vorrichtung und Verfahren zum Abstrahlen eines Reinigungsmediums auf eine zu reinigende Fläche
DE2433774A1 (de) Verfahren zur innenbeschichtung von bereits verlegten rohrleitungen aus stahl oder guss mittels kunststoff
DE19636304A1 (de) Verfahren und Vorrichtung zur Bearbeitung von mit Lacken beschichteten Holzoberflächen
DE19738572A1 (de) Dosierventil, insbesondere für ein Druckstrahlgerät, Druckstrahlgerät sowie Verfahren zum Betrieb eines Druckstrahlgeräts
DE8620851U1 (de) Vorrichtung zur Vorbehandlung von Gußwerkstücken
EP2397256B1 (fr) Dispositif et procédé destinés au découpage d'une pièce usinée revêtue

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

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

17P Request for examination filed

Effective date: 19821105

ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

REF Corresponds to:

Ref document number: 11233

Country of ref document: AT

Date of ref document: 19850215

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3261903

Country of ref document: DE

Date of ref document: 19850228

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: 19850331

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

Ref country code: LU

Payment date: 19860115

Year of fee payment: 5

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

Ref country code: AT

Payment date: 19870303

Year of fee payment: 6

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

Ref country code: NL

Payment date: 19870331

Year of fee payment: 6

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

Ref country code: AT

Effective date: 19880329

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

Ref country code: LI

Effective date: 19880331

Ref country code: CH

Effective date: 19880331

BERE Be: lapsed

Owner name: H. LORENZ G.M.B.H.

Effective date: 19880331

Owner name: GKSS-FORSCHUNGSZENTRUM GEESTHACHT G.M.B.H.

Effective date: 19880331

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: GB

Effective date: 19890329

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

Ref country code: SE

Effective date: 19890330

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

Ref country code: BE

Effective date: 19890331

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

Ref country code: NL

Effective date: 19891001

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
GBPC Gb: european patent ceased through non-payment of renewal fee
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: 19891130

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: 19930528

Year of fee payment: 12

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

Ref country code: DE

Effective date: 19941201

EUG Se: european patent has lapsed

Ref document number: 82102621.8

Effective date: 19900124