EP0260403A1 - Spacer with strips of a tube spacing grid - Google Patents

Spacer with strips of a tube spacing grid Download PDF

Info

Publication number
EP0260403A1
EP0260403A1 EP87110263A EP87110263A EP0260403A1 EP 0260403 A1 EP0260403 A1 EP 0260403A1 EP 87110263 A EP87110263 A EP 87110263A EP 87110263 A EP87110263 A EP 87110263A EP 0260403 A1 EP0260403 A1 EP 0260403A1
Authority
EP
European Patent Office
Prior art keywords
bars
spacer
lattice
frame
grid
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
EP87110263A
Other languages
German (de)
French (fr)
Other versions
EP0260403B1 (en
Inventor
Ulrich Engel
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.)
MAN Gutehoffnungshutte GmbH
Original Assignee
MAN Gutehoffnungshutte 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 MAN Gutehoffnungshutte GmbH filed Critical MAN Gutehoffnungshutte GmbH
Publication of EP0260403A1 publication Critical patent/EP0260403A1/en
Application granted granted Critical
Publication of EP0260403B1 publication Critical patent/EP0260403B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/007—Auxiliary supports for elements
    • F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
    • F28F9/0135—Auxiliary supports for elements for tubes or tube-assemblies formed by grids having only one tube per closed grid opening
    • F28F9/0136—Auxiliary supports for elements for tubes or tube-assemblies formed by grids having only one tube per closed grid opening formed by intersecting strips
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/10—Water tubes; Accessories therefor
    • F22B37/20—Supporting arrangements, e.g. for securing water-tube sets
    • F22B37/205—Supporting and spacing arrangements for tubes of a tube bundle
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S165/00—Heat exchange
    • Y10S165/355—Heat exchange having separate flow passage for two distinct fluids
    • Y10S165/40—Shell enclosed conduit assembly
    • Y10S165/401—Shell enclosed conduit assembly including tube support or shell-side flow director
    • Y10S165/416—Extending transverse of shell, e.g. fin, baffle
    • Y10S165/423—Bar
    • Y10S165/424—Bar forming grid structure

Definitions

  • the lattice bars are fastened in the frame in different ways.
  • the bars are rigidly connected to the frame.
  • spacers are provided which allow a certain freedom of movement for the grille, which enables thermal compensation. This compensation option is important if the grating and frame are made of different materials.
  • a cross slot (5) in the spacer bolt (1) extends over the lattice bar (3) and positions it in the lattice frame (2).
  • the spacer pin engages in a recess (7) in the lattice bar (3) and thus prevents the lattice bar (3) from being pulled out of the lattice frame (2).
  • a paste-like plastic (9) can be inserted between the bolt slots (5) and tubular bars (3) through a longitudinal hole (8) after the lattice frame (2) has been fitted with bars (3) and spacer bolts (1). After the plastic (9) has hardened, a non-positive connection is made between the spacer bolts (1) and the lattice bars (3), so that the pipe spacing grid remains positioned and fixed in the lattice frame (2) for the subsequent operations.

Abstract

Die Erfindung betrifft ein Rohrabstandsgitter zum Führen von Rohren in Wärmetauschern, beispielsweise Dampferzeugern, wobei das Gitter aus sich kreuzenden, in mehr als einer Ebene angeordneten Gitterstäben gebildet und von einem Rahmen umgeben ist. Der Rahmen weist innenseitig umlaufende Nuten zur Aufnahme der Enden der Gitterstäbe auf. Die gegenseitige Abstandsfestlegung der Gitterstäbe (3) im Rahmen (2) erfolgt durch Distanzbolzen (1). Die Distanzbolzen (1) weisen einen Querschlitz (5) auf zur Aufnahme des Gitterstabes (3), ferner einen Vorsprung (6) im Querschlitz (5), der in eine entsprechende Ausnehmung (7) des Gitterstabes (3) eingreift. Die Distanzbolzen (1) sind durch einen umlaufenden Abdeckring (4) gegen Herausfallen gesichert. In eine Längsbohrung (8) des Distanzbolzens (1) kann pasteuser Kunststoff eingebracht werden, der nach Aushärtung das Gitter fixiert.The invention relates to a pipe spacing grid for guiding pipes in heat exchangers, for example steam generators, the grid being formed from intersecting grid bars arranged in more than one plane and surrounded by a frame. The frame has circumferential grooves on the inside for receiving the ends of the bars. The mutual spacing of the bars (3) in the frame (2) is carried out using spacers (1). The spacer bolts (1) have a transverse slot (5) for receiving the lattice rod (3), furthermore a projection (6) in the transverse slot (5) which engages in a corresponding recess (7) in the lattice rod (3). The spacer bolts (1) are secured against falling out by a circumferential cover ring (4). Paste-usable plastic can be introduced into a longitudinal bore (8) of the spacer bolt (1), which fixes the grid after curing.

Description

Die Erfindung betrifft einen Abstandshalter für Gitterstäbe eines Rohrabstandsgitters zum Führen von Rohren beispielsweise bei Dampferzeugern, wobei das Gitter aus sich kreuzenden, in mehr als einer Ebene angeordneten Gitterstäben gebildet und von einem Rahmen umgeben ist, der innenseitig umlaufende Nuten zur Aufnahme der Enden der Gitterstäbe aufweist.The invention relates to a spacer for bars of a pipe spacer for guiding pipes, for example in steam generators, the grid being formed from crossing bars arranged in more than one plane and being surrounded by a frame which has circumferential grooves on the inside for receiving the ends of the bars .

Zum Berohren von Wärmetauschern ist es notwendig, daß ein genau definierter Abstand der Rohrgitterstäbe eingehalten wird. Das Einhalten der geometrischen Gitterstruktur wird insbesondere durch die Befestigung der Gitterstabenden in der Rahmenkonstruktion des Gitterrostes erreicht.To touch heat exchangers, it is necessary to maintain a precisely defined distance between the pipe bars. Adherence to the geometric lattice structure is achieved in particular by fastening the ends of the lattice bars in the frame structure of the grating.

Nach dem Stand der Technik geschieht die Befestigung der Gitterstäbe im Rahmen auf unterschiedliche Weise. Bei einigen Ausführungen sind die Gitterstäbe mit dem Rahmen starr verbunden. Bei anderen Ausführungen sind Abstandshalter vorgesehen, die einen gewissen Bewegungsspielraum für das Gitter zulassen, der einen thermischen Ausgleich ermöglicht. Diese Ausgleichsmöglichkeit ist wichtig, wenn Gitterrost und Rahmen aus unterschiedlichen Werkstoffen bestehen.According to the prior art, the lattice bars are fastened in the frame in different ways. In some versions, the bars are rigidly connected to the frame. In other designs, spacers are provided which allow a certain freedom of movement for the grille, which enables thermal compensation. This compensation option is important if the grating and frame are made of different materials.

Aufgabe der Erfindung ist es, für ein Rohrabstandsgitter zur Führung der Rohrbündel von Wärmetauschern, insbesondere Dampferzeugern, eine Abstandshalterung im umlaufenden Gitterrostrahmen zu schaffen, die zum einen eine sichere Fixierung der Gitterstäbe für die Berohrung und die Montage gewährleistet, zum anderen darf aber im Betriebszustand des Wärmetauschers diese Fixierung nicht formschlüssig sein, weil unterschiedliche Wärmedehnungen zwischen Gitterstäben und Rahmen infolge der Materialunterschiede bei Stäben und Rahmen aufgefangen werden müssen.The object of the invention is to provide a spacer in the circumferential grating frame for a pipe spacing grid for guiding the tube bundle of heat exchangers, in particular steam generators, which on the one hand ensures a secure fixation of the grating bars for the tubing and the assembly, but on the other hand may in the operating state of the Heat exchanger this fixation should not be positive, because different thermal expansions between the bars and frame due to Material differences in bars and frames must be compensated.

Die Erfindung löst diese Aufgabe in der Weise, wie es in den Patentansprüchen angegeben ist.The invention solves this problem in the manner as specified in the claims.

Distanzbolzen bieten die Möglichkeit der Verwendung eines einteiligen Gitterrahmens mit möglichst geringem Profilquerschnitt und gewährleisten eine genaue Positionierung im Gitterrahmen.Spacer bolts offer the possibility of using a one-piece lattice frame with the smallest possible profile cross-section and ensure precise positioning in the lattice frame.

Nachdem die Abstandsfestlegung der Gitterstäbe im Gitterrahmen durch Aufsetzen der Distanzbolzen erfolgt ist, wird durch eine Längsbohrung im Distanzbolzen ein pasteuser Kunststoff zwischen Bolzenschlitz und Gitterstab eingebracht, der nach Aushärtung eine kraftschlüssige Verbindung von Bolzen und Gitterstab herstellt. Dieser eingebrachte Kunststoff wird, wenn sich der Wärmetauscher in Betrieb befindet, flüssig und durch das die Halterung mit bestimmter Temperatur umspülende Medium ausgespült, so daß temperaturbedingte Ausdehnungen innerhalb der Konstruktion Gitterstab - Rahmen stattfinden können.After the spacing of the lattice bars in the lattice frame has been established by attaching the spacer bolts, a paste-like plastic is inserted between the bolt slot and the lattice rod through a longitudinal hole in the spacer bolt, which creates a non-positive connection between the bolt and the lattice rod after curing. When the heat exchanger is in operation, this introduced plastic becomes liquid and is rinsed out through the medium, which is flushing around the holder with a certain temperature, so that temperature-related expansions can take place within the construction of the lattice bar frame.

Ein Ausführungsbeispiel der Erfindung wird nachstehend anhand der Zeichnung näher erläutert.An embodiment of the invention is explained below with reference to the drawing.

Es zeigen:

  • Fig. 1 ein Rohrabstandsgitter in der Draufsicht,
  • Fig. 2 einen Schnitt längs der Linie A-A gem. Fig. 1
  • Fig. 3 eine Teildraufsicht mit Ausbrüchen,
  • Fig. 4 eine Vorderansicht des Distanzbolzens,
  • Fig. 5 einen Schnitt längs der Linie B-B gem. Fig. 4,
  • Fig. 6 eine Draufsicht des Distanzbolzens.
Show it:
  • 1 is a pipe spacing grid in plan view,
  • Fig. 2 shows a section along the line AA according to. Fig. 1
  • 3 is a partial top view with breakouts,
  • 4 is a front view of the spacer bolt,
  • Fig. 5 shows a section along the line BB acc. Fig. 4,
  • Fig. 6 is a plan view of the spacer bolt.

Nach den Figuren wird ein Distanzbolzen (1) in eine Bohrung des Gitterrahmens (2) eingesetzt und durch einen aufliegenden Abdeckring (4) gesichert.According to the figures, a spacer bolt (1) is inserted into a hole in the lattice frame (2) and secured by an overlying cover ring (4).

Ein Querschlitz (5) im Distanzbolzen (1) greift über den Gitterstab (3) und positioniert diesen im Gitterrahmen (2).A cross slot (5) in the spacer bolt (1) extends over the lattice bar (3) and positions it in the lattice frame (2).

Mit einer im Querschlitz (5) liegenden Nase (6) greift der Distanzbolzen in eine Ausnehmung (7) des Gitterstabes (3) ein und verhindert damit ein Herausziehen des Gitterstabes (3) aus dem Gitterrahmen (2).With a nose (6) lying in the transverse slot (5), the spacer pin engages in a recess (7) in the lattice bar (3) and thus prevents the lattice bar (3) from being pulled out of the lattice frame (2).

Durch eine Längsbohrung (8) kann nach dem Bestücken des Gitterrahmens (2) mit Gitterstäben (3) und Distanzbolzen (1) ein pasteuser Kunststoff (9) zwischen die Bolzenschlitze (5) und Rohrgitterstäbe (3) eingebracht werd en. Nach Aushärtung des Kunststoffes (9) ist eine kraftschlüssige Verbindung zwischen den Distanzbolzen (1) und den Gitterstäben (3) hergestellt, so daß für die nachfolgenden Arbeitsgänge das Rohrabstandsgitter im Gitterrahmen (2) positioniert und fixiert bleibt.A paste-like plastic (9) can be inserted between the bolt slots (5) and tubular bars (3) through a longitudinal hole (8) after the lattice frame (2) has been fitted with bars (3) and spacer bolts (1). After the plastic (9) has hardened, a non-positive connection is made between the spacer bolts (1) and the lattice bars (3), so that the pipe spacing grid remains positioned and fixed in the lattice frame (2) for the subsequent operations.

Während des Betriebes wird der Kunststoff (9) durch das ihn umspielende Medium bei einer bestimmten Temperatur ausgespült und gibt somit den Gitterstab (3) für temperaturbedingte Längenausdehnungen frei. During operation, the plastic (9) is rinsed out by the medium surrounding it at a certain temperature and thus releases the lattice rod (3) for temperature-related linear expansion.

Claims (3)

1. Abstandshalter für Gitterstäbe eines Rohrabstandsgitters zum Führen von Rohren beispielsweise bei Dampferzeugern, wobei das Gitter aus sich kreuzenden, in mehr als einer Ebene angeordneten Gitterstäben gebildet und von einem Rahmen umgeben ist, der innenseitig umlaufende Nuten zur Aufnahme der Enden der Gitterstäbe aufweist,
dadurch gekennzeichnet,
daß die gegenseitige Abstandsfestlegung der Gitterstäbe (3) im Rahmen (2) durch Distanzbolzen (1) erfolgt, die einen Querschlitz (5) zur Aufnahme des Gitterstabes (3) aufweisen, ferner einen Vorsprung (6) im Querschlitz (5), der in eine entsprechende Ausnehmung (7) des Gitterstabes (3) eingreift.1. Spacers for lattice bars of a pipe spacer lattice for guiding pipes, for example in steam generators, the lattice being formed from crossing lattice bars arranged in more than one plane and being surrounded by a frame which has circumferential grooves on the inside for receiving the ends of the lattice bars,
characterized,
that the mutual spacing of the bars (3) in the frame (2) by spacers (1), which have a transverse slot (5) for receiving the bars (3), and a projection (6) in the transverse slot (5), which in a corresponding recess (7) of the lattice bar (3) engages. 2. Abstandshalter für Gitterstäbe nach Anspruch 1,
dadurch gekennzeichnet,
daß die Distanzbolzen (1) durch einen umlaufenden Abdeckring (4) gesichert sind.2. spacer for bars according to claim 1,
characterized,
that the spacer bolts (1) are secured by a circumferential cover ring (4). 3. Abstandshalter für Gitterstäbe nach Anspruch 1,
dadurch gekennzeichnet,
daß der Distanzbolzen (1) mit einer Längsbohrung (8), ausgeführt als Durchgangs- oder Sacklochbohrung, versehen ist.3. spacer for bars according to claim 1,
characterized,
that the spacer bolt (1) is provided with a longitudinal bore (8), designed as a through or blind hole.
EP87110263A 1986-09-19 1987-07-16 Spacer with strips of a tube spacing grid Expired - Lifetime EP0260403B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3631886 1986-09-19
DE19863631886 DE3631886A1 (en) 1986-09-19 1986-09-19 SPACER FOR GRID ROD OF A PIPE GRID IN HEAT EXCHANGERS

Publications (2)

Publication Number Publication Date
EP0260403A1 true EP0260403A1 (en) 1988-03-23
EP0260403B1 EP0260403B1 (en) 1991-05-15

Family

ID=6309923

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87110263A Expired - Lifetime EP0260403B1 (en) 1986-09-19 1987-07-16 Spacer with strips of a tube spacing grid

Country Status (6)

Country Link
US (1) US4784220A (en)
EP (1) EP0260403B1 (en)
KR (1) KR880004288A (en)
DE (2) DE3631886A1 (en)
ES (1) ES2022219B3 (en)
IN (1) IN170068B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4038813C2 (en) * 1990-12-05 1998-01-29 Siemens Ag Boiler arrangement
US5388638A (en) * 1993-12-28 1995-02-14 Phillips Petroleum Company Rod baffle heat exchanger
US5527865A (en) * 1995-03-24 1996-06-18 The University Of North Carolina At Chapel Hill Multi-phase polymerization process
DE19511265A1 (en) * 1995-03-27 1996-10-02 Siemens Ag Lattice spacer

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2262621A1 (en) * 1972-12-21 1974-07-11 Gutehoffnungshuette Sterkrade PIPE APPARATUS, IN PARTICULAR STEAM GENERATORS
FR2223650A1 (en) * 1973-03-30 1974-10-25 Siemens Ag
DE2541986A1 (en) * 1975-06-09 1976-12-16 Breda Termomeccanica Spa PROCESS FOR MANUFACTURING A GRATING COMPOSED OF TWO DIFFERENT MATERIALS, WHICH CAN REMAIN INITIALLY STIFF AND ALLOWS DIFFERENT THERMAL EXPANSIONS AFTER COMMISSIONING

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3575236A (en) * 1969-08-13 1971-04-20 Combustion Eng Formed plate tube spacer structure
IT1065374B (en) * 1976-12-21 1985-02-25 Breda Termomeccanica Spa SUPPORT GRID FOR TUBES AND ITS ASSEMBLY IN A STEAM GENERATOR OR SIMILAR
IT1096096B (en) * 1978-05-17 1985-08-17 Soligno Vincenzo GUIDE-SUPPORT OF THE GRID TYPE FOR PIPES FOR STEAM GENERATORS
US4570883A (en) * 1983-04-29 1986-02-18 Westinghouse Electric Corp. Tube support grid

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2262621A1 (en) * 1972-12-21 1974-07-11 Gutehoffnungshuette Sterkrade PIPE APPARATUS, IN PARTICULAR STEAM GENERATORS
FR2223650A1 (en) * 1973-03-30 1974-10-25 Siemens Ag
DE2541986A1 (en) * 1975-06-09 1976-12-16 Breda Termomeccanica Spa PROCESS FOR MANUFACTURING A GRATING COMPOSED OF TWO DIFFERENT MATERIALS, WHICH CAN REMAIN INITIALLY STIFF AND ALLOWS DIFFERENT THERMAL EXPANSIONS AFTER COMMISSIONING

Also Published As

Publication number Publication date
US4784220A (en) 1988-11-15
DE3770090D1 (en) 1991-06-20
EP0260403B1 (en) 1991-05-15
IN170068B (en) 1992-02-01
DE3631886A1 (en) 1988-03-31
ES2022219B3 (en) 1991-12-01
KR880004288A (en) 1988-06-03

Similar Documents

Publication Publication Date Title
DE1439936A1 (en) Fuel element for heterogeneous nuclear reactors
DE1763241B2 (en)
DE1944932A1 (en) Fuel element holder for nuclear reactors
CH671429A5 (en)
DE3821666C2 (en)
EP0527244B1 (en) Spacer grid for fuel elements with curved attached springs
DE2162381A1 (en) CORNER CONNECTOR FOR DOUBLE HOLLOW PROFILE STRUTS
EP0260403A1 (en) Spacer with strips of a tube spacing grid
DE2238477C3 (en) Fuel arrangement for an atomic nuclear reactor
DE2313438B2 (en) Tubular apparatus, in particular steam generators
DE3630502A1 (en) PIPE GRID FOR GUIDING THE TUBES OF EXAMPLE STEAM GENERATORS
DE2840146C2 (en)
EP0433493B1 (en) Nuclear reactor fuel assembly comprising spacergrids and method for their fabrication
EP0647744B1 (en) Reinforcement for concrete constructions at a constructional joint
DE19526623C2 (en) heat exchangers
DE3148777C2 (en) Grid ceiling, in particular strip grid ceiling
DE20105913U1 (en) Nuclear reactor fuel assembly
DE2106218C3 (en) Reinforcement element for concrete or the like
DE3911792C2 (en) Heat exchangers, in particular coolers for a motor vehicle
DE10010229C1 (en) Holding device, for fixing at least one field pipe to pipe rack of scaffolding, comprises at least one spring element connected to at least one arm
DE3710681C1 (en) Lagging mat for mine support
DE2142621A1 (en) CONNECTION OF RECTANGULAR PROFILES
DE1564434C3 (en) Spacers for fuel assemblies with a wide variety of fuel rods
DE19951913A1 (en) Spacer for two shells of cavity wall has associated coupling device to couple to transport anchor and/or to reinforcement stay for cavity wall
EP0224668A1 (en) Tube support grid for, e.g., steam generators

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): BE CH DE ES FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19880525

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: MAN GUTEHOFFNUNGSHUETTE AKTIENGESELLSCHAFT

17Q First examination report despatched

Effective date: 19900213

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

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

ET Fr: translation filed
REF Corresponds to:

Ref document number: 3770090

Country of ref document: DE

Date of ref document: 19910620

ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO MILANO S.P.A.

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

Payment date: 19930610

Year of fee payment: 7

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

Ref country code: SE

Payment date: 19930614

Year of fee payment: 7

Ref country code: DE

Payment date: 19930614

Year of fee payment: 7

Ref country code: CH

Payment date: 19930614

Year of fee payment: 7

Ref country code: BE

Payment date: 19930614

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: 19930616

Year of fee payment: 7

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

Ref country code: ES

Payment date: 19930719

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: 19930731

Year of fee payment: 7

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

Ref country code: GB

Effective date: 19940716

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

Ref country code: SE

Effective date: 19940717

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

Ref country code: ES

Free format text: LAPSE BECAUSE OF THE APPLICANT RENOUNCES

Effective date: 19940718

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

Ref country code: LI

Effective date: 19940731

Ref country code: CH

Effective date: 19940731

Ref country code: BE

Effective date: 19940731

BERE Be: lapsed

Owner name: MAN GUTEHOFFNUNGSHUTTE A.G.

Effective date: 19940731

EUG Se: european patent has lapsed

Ref document number: 87110263.8

Effective date: 19950210

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

Ref country code: NL

Effective date: 19950201

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

Effective date: 19940716

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19950331

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: DE

Effective date: 19950401

EUG Se: european patent has lapsed

Ref document number: 87110263.8

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 19991007

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: 20050716