EP0174501B1 - Method for bending section bars of metal, in particular of aluminium, with non supported webs, lips or the like - Google Patents
Method for bending section bars of metal, in particular of aluminium, with non supported webs, lips or the like Download PDFInfo
- Publication number
- EP0174501B1 EP0174501B1 EP85110004A EP85110004A EP0174501B1 EP 0174501 B1 EP0174501 B1 EP 0174501B1 EP 85110004 A EP85110004 A EP 85110004A EP 85110004 A EP85110004 A EP 85110004A EP 0174501 B1 EP0174501 B1 EP 0174501B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- profile
- bending
- guide element
- bar
- rollers
- 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
Links
- 238000005452 bending Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims description 10
- 229910052782 aluminium Inorganic materials 0.000 title claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims description 7
- 229910052751 metal Inorganic materials 0.000 title claims description 4
- 239000002184 metal Substances 0.000 title claims description 4
- 239000004411 aluminium Substances 0.000 title claims description 3
- 239000000463 material Substances 0.000 abstract description 3
- 230000007935 neutral effect Effects 0.000 abstract description 3
- 238000005096 rolling process Methods 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/08—Bending rods, profiles, or tubes by passing between rollers or through a curved die
Definitions
- the invention relates to a method for bending a profile bar made of metal, in particular aluminum, the profile of which has at least one profile leg transversely to the bending plane, the profile bar being guided between at least three bending rollers arranged at an adjustable distance from one another, of which the middle bending roller relates to the profile bar two is opposite outer bending rollers, and wherein at least the one transverse to the bending plane profile leg of the profile rod is guided relative to the central bending roller by means of a guide element.
- the profile leg of a profile rod which is located in the bending direction, is supported in a tensile zone on its inside facing the bending axis by guide rollers, whereas the profile leg, which presses against the middle bending roller, is pressed on - Its outside does not receive any support, which can lead to undesirable deformations in this pressure zone.
- the area of the profile rod between the outer and the inner profile leg is not supported so as not to impede the rotation of the guide rollers, so that there is also a risk of deformation in this area, in particular with small bending radii and complicated profile cross sections.
- the object of the invention is to provide a method for bending a profile bar made of metal, in particular aluminum, which allows the bending of profile bars with a comparatively complicated profile without undesired deformation of the profile shape and allows small bending radii.
- the profile shape of the guide element is complementarily adapted to the profile shape of the profile rod on its side carrying the profile leg, and in that the profile rod is guided between the guide element and a support disk of the middle bending roller leading the profile rod on the side facing the guide element.
- the profile is supported on both sides by the guide element and the central bending roller and thus the support disk, and an inadmissible deformation of the profile is thereby prevented.
- roller 1 consists of the two outer rollers 1 and the middle roller 3. Both the distance of the two rollers 1 and 2 from each other and the distance of the axis 6 or roller 3 from which the axes 4, 5 of the straight lines connecting rollers 1, 2 are adjustable. If a workpiece or a profile rod 7 is now introduced in the direction X into the opening between a complementarily adapted (profile-specific) guide element 10 and support disks of the roller 3, respectively. pushed between the support disks of rollers 1, 2 and then moved in the direction of arrows X, its radius of curvature is reduced. If this operation is repeated several times, the roller 3 being displaced in the direction of the arrow Y after each passage of the workpiece 7, the radius of curvature is further reduced.
- FIG. 2 illustrates the device with the angular support 8, which is firmly connected to a slide on which the deliverable roller 3 and the rigid bracket 9 sit, which serve as supports for the profile-specific guide element 10.
- the workpiece 7 is guided between the guide element 10 and support disks of the roller 3, the guide element 10 being able to be prestressed in the Y direction by means of locking screws in slots 11 with the feed screw 12.
- Fig. 3 is a sectional view of the device with a different type of workpiece or a profile rod 13 is shown. Without the complementary (profile-specific) guide element 14 adapted to the profile rod 13, the wall on the outside of the arch would be pulled inwards during bending.
- the method according to the invention is the adaptation of the guide elements in shape and material to the respective profile shapes and materials.
- the method allows workpieces of relatively large width or rather high free-standing walls, respectively. to bend with free-standing formations into arches or rings and to carry out the bending process continuously.
- the device can be attached to any suitable bend resp.
- Rolling machine can be attached.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Adornments (AREA)
- Wire Processing (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Biegen einer Profilstange aus Metall, insbesondere Aluminium, deren Profil quer zur Biegeebene wenigstens einen Profilschenkel hat, wobei die Profilstange zwischen wenigstens drei mit einstellbarem Abstand voneinander angeordneten Biegerollen hindurchgeführt wird, von denen die mittlere Biegerolle bezogen auf die Profilstange zwei äußeren Biegerollen gegenüberliegt, und wobei wenigstens der eine quer zur Biegeebene verlaufende Profilschenkel der Profilstange mittels eines Führungselements relativ zu der mittleren Biegerolle geführt wird.The invention relates to a method for bending a profile bar made of metal, in particular aluminum, the profile of which has at least one profile leg transversely to the bending plane, the profile bar being guided between at least three bending rollers arranged at an adjustable distance from one another, of which the middle bending roller relates to the profile bar two is opposite outer bending rollers, and wherein at least the one transverse to the bending plane profile leg of the profile rod is guided relative to the central bending roller by means of a guide element.
Es ist allgemein bekannt, Profilstangen, welche sowohl Voll- oder Hohlprofile sein können, insbesondere solche aus Stahl oder Aluminium, die beispielsweise zu halbkreisförmigen Segmenten oder zu Ringen geformt werden sollen, zwischen mindestens drei drehenden Walzen bzw. Biegerollen hindurchzuführen, von denen vorzugsweise mindestens eine angetrieben ist. Wenn die mittlere Walze sukzessive zwischen die beiden äußeren Walzen gebracht wird, so wird auf das zu biegende Werkstück ein Druck ausgeübt, der beim Hindurchführen des Werkstückes zwischen den.Walzen dieses rundet.It is generally known to pass profile rods, which can be both solid or hollow profiles, in particular those made of steel or aluminum, which are to be formed, for example, into semicircular segments or rings, between at least three rotating rollers or bending rollers, of which preferably at least one is driven. If the middle roller is successively brought between the two outer rollers, pressure is exerted on the workpiece to be bent, which rounds the workpiece between the rollers as it is passed through.
Dieses Verfahren stellt keinerlei Probleme, wenn das zu biegende Werkstück in der Biegerichtung nicht zu breit ist oder der Biegeradius nicht zu klein ist. Wenn aber Werkstücke gebogen werden sollen, die in der Biegerichtung größere Breiten aufweisen oder kleine Biegeradien erzielt werden müssen, so wird der an der Innenseite angreifende Druck so groß, daß dort unzulässige Verformungen oder gar Zerstörung auftreten.This method poses no problems if the workpiece to be bent is not too wide in the bending direction or the bending radius is not too small. If, however, workpieces are to be bent that have larger widths in the bending direction or small bending radii have to be achieved, the pressure acting on the inside becomes so great that inadmissible deformations or even destruction occur there.
Bei dem aus der DE-U-1 335 539 bekannten Verfahren der eingangs genannten Art wird der in Biegerichtung außenliegende Profilschenkel einer Profilstange in einer Zugzone an seiner der Biegeachse zugewandten Innenseite durch Führungsrollen gestützt, wohingegen der innenliegende, an die mittlere Biegerolle andrückende Profilschenkel -an- seiner Außenseite keine Unterstützung erfährt, was zu unerwünschten Verformungen in dieser Druckzone führen kann. Der Bereich der Profilstange zwischen dem äußeren und dem inneren Profilschenkel ist nicht unterstützt, um die Drehung der Führungsrollen nicht zu behindern, so daß auch in diesem Bereich eine Verformungsgefahr besteht, insbesondere bei kleinen Biegeradien und komplizierten Profilquerschnitten.In the method of the type mentioned at the outset of DE-U-1 335 539, the profile leg of a profile rod, which is located in the bending direction, is supported in a tensile zone on its inside facing the bending axis by guide rollers, whereas the profile leg, which presses against the middle bending roller, is pressed on - Its outside does not receive any support, which can lead to undesirable deformations in this pressure zone. The area of the profile rod between the outer and the inner profile leg is not supported so as not to impede the rotation of the guide rollers, so that there is also a risk of deformation in this area, in particular with small bending radii and complicated profile cross sections.
Aufgabe der Erfindung ist es, ein Verfahren zum Biegen einer Profilstange aus Metall, insbesondere Aluminium, anzugeben, welches das Biegen von Profilstangen mit vergleichsweise kompliziertem Profil ohne unerwünschte Deformierung der Profilform erlaubt und kleine Biegeradien zuläßt.The object of the invention is to provide a method for bending a profile bar made of metal, in particular aluminum, which allows the bending of profile bars with a comparatively complicated profile without undesired deformation of the profile shape and allows small bending radii.
Die Aufgabe wird dadurch gelöst, daß die Profilform des Führungselements der profilform der Profilstange auf deren den Profilschenkel tragenden Seite komplementär angepaßt wird und daß die Profilstange zwischen dem Führungselement und einer die Profilstange auf der dem Führungselement wandten Seite führenden Stützscheibe der mittleren Biegerolle hindurchgeführt wird.The object is achieved in that the profile shape of the guide element is complementarily adapted to the profile shape of the profile rod on its side carrying the profile leg, and in that the profile rod is guided between the guide element and a support disk of the middle bending roller leading the profile rod on the side facing the guide element.
Hierdurch wird erreicht, daß das Profil von dem Führungselement und der mittleren Biegerolle und somit der Stützscheibe beidseitig gestützt wird und dadurch eine unzulässige Verformung des Profils verhindert wird.It is hereby achieved that the profile is supported on both sides by the guide element and the central bending roller and thus the support disk, and an inadmissible deformation of the profile is thereby prevented.
In den Zeichnungen ist eine Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens dargestellt.In the drawings, an apparatus for performing the method according to the invention is shown.
In den Zeichnungen zeigt:
- Fig. 1 eine Draufsicht auf eine aus drei Walzen und einem Winkelträger bestehende Anordnung mit Konsole für ein flaches Profil aus Aluminium,
- Fig. 2 ein Schnittbild,
- Fig. 3 ein Schnittbild mit einem anders gearteten Profil.
- 1 is a plan view of an arrangement consisting of three rollers and an angle bracket with a bracket for a flat profile made of aluminum,
- 2 is a sectional view,
- Fig. 3 is a sectional view with a different type of profile.
Das in Fig. 1 gezeigte Walzaggregat bzw. die Biegevorrichtung besteht aus den beiden Außenwalzen 1, und aus der mittelwalze 3. Sowohl die Entfernung der beiden Walzen 1 und 2 voneinander als auch der Abstand der Achse 6 oder Walze 3 von der die Achsen 4, 5 der Walzen 1, 2 verbindenden Geraden sind einstellbar. Wird nun ein Werkstück bzw. eine Profilstange 7 in Richtung X in die Öffnung zwischen einem der Profilstange 7 komplementär angepaßten (profilspezifischen) Führungselement 10 und Stützscheiben der Walze 3 eingebracht, resp. zwischen die Stützscheiben der Walzen 1, 2 geschoben und dann in Richtung der Pfeile X bewegt, so verkleinert sich sein Krümmungsradius. Bei mehrmaliger Wiederholung dieses Arbeitsganges, wobei nach jedem Durchgang des Werkstückes 7 die Walze 3 in Richtung des Pfeiles Y verschoben wird, verkleinert sich der Krümmungsradius weiter. Ohne das Führungselement 10 würde die in Richtung Y wirkende Druckkraft auf das profil dieses an der Innenkante deformieren oder gar zerstören. Durch die Aufteilung dieser Druckkraft in eine Zug- und eine Druckkomponente, welche dank dem profilspezifischen Führungselement 10 nahe der neutralen Zone angreift, kann das Profil weitergehend gebogen werden.1 consists of the two
Der in Fig. 2 gezeigte Schnitt veranschaulicht die Vorrichtung mit dem Winkelträger 8, welcher fest mit einem Schlitten verbunden ist, auf welchem die zustellbare Walze 3 und die starre Konsole 9 sitzen, welche als Träger für das profilspezifische Führungselement 10 dienen. Das Werkstück 7 ist zwischen dem Führungselement 10 und Stützscheiben der Walze 3 geführt, wobei das Führungselement 10 durch Feststellschrauben in Schlitzen 11 in Richtung Y mit der Zustellschraube 12 vorgespannt werden kann.The section shown in FIG. 2 illustrates the device with the
Dadurch kann der.Angriffspunkt in die neutrale Zone des Werkstücks gebracht werden.This allows the point of attack to be brought into the neutral zone of the workpiece.
In Fig. 3 ist ein Schnittbild der Vorrichtung mit einem andersartigen Werkstück bzw. einer Profilstange 13 dargestellt. Ohne das der Profilstange 13 komplementär angepaßte (profilspezifische) Führungselement 14 würde die Wandung an der Bogenaußenseite beim Biegen gegen innen gezogen werden.In Fig. 3 is a sectional view of the device with a different type of workpiece or a
Wesentlich für das Arbeiten mit dem erfindungsgemäßen Verfahren ist die Anpassung der Führungselemente in Form und Material an die jeweiligen Profilformen und -materialien.Essential for working with the erfin The method according to the invention is the adaptation of the guide elements in shape and material to the respective profile shapes and materials.
Das Verfahren erlaubt es, Werkstücke auch relativ großer Breite oder ziemlich hoher freistehender Wandungen resp. mit freistehenden Ausformungen zu Bögen oder Ringen zu biegen und den Biegeprozeß kontinuierlich durchzuführen.The method allows workpieces of relatively large width or rather high free-standing walls, respectively. to bend with free-standing formations into arches or rings and to carry out the bending process continuously.
Die Vorrichtung kann an jeder geeigneten Biege
resp.The device can be attached to any suitable bend
resp.
Walzmaschine angebracht werden.Rolling machine can be attached.
Claims (1)
- A method of bending a bar (7; 13) of metal, in particular of aluminium, the profile of which has at least one profile shank disposed transversely across the bending plane, in which respect the bar is guided between at least three bending rollers (1, 2, 3), arranged at an adjustable distance from one another, of which the middle bending roller (3) relative to the bar (7; 13) is disposed opposite two outer bending rollers (1, 2), and whereby at least the one profile shank, disposed transversely to the bending plane, is guided by means of a guide element (10; 14) relative to the middle bending roller (3), characterised in that the profile shape of the guide element (10; 14) is complementarily matched with the profile form of the bar (7; 13) on the side thereof supporting the profile shank, and that the bar (7; 13) is guided between the guide element (10; 14) and a guiding support disc of the middle bending roller (3), which disc is at that side of the bar (7; 13) which the guide element (10; 14) faces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT85110004T ATE58314T1 (en) | 1984-09-12 | 1985-08-08 | PROCESS FOR ROUNDING METAL PROFILE BARS, ESPECIALLY ALUMINUM WITH UNSUPPORTED BARS, LIPS OR SIMILAR FORMATIONS. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH4346/84A CH664101A5 (en) | 1984-09-12 | 1984-09-12 | METHOD AND DEVICE FOR ROUNDING METAL PROFILE BARS, ESPECIALLY ALUMINUM. |
| CH4346/84 | 1984-09-12 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0174501A2 EP0174501A2 (en) | 1986-03-19 |
| EP0174501A3 EP0174501A3 (en) | 1986-11-12 |
| EP0174501B1 true EP0174501B1 (en) | 1990-11-14 |
Family
ID=4274380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP85110004A Expired - Lifetime EP0174501B1 (en) | 1984-09-12 | 1985-08-08 | Method for bending section bars of metal, in particular of aluminium, with non supported webs, lips or the like |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0174501B1 (en) |
| AT (1) | ATE58314T1 (en) |
| CH (1) | CH664101A5 (en) |
| DE (1) | DE3580553D1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102189160B (en) * | 2011-04-02 | 2016-07-06 | 长治钢铁（集团）锻压机械制造有限公司 | The channel steel lateral bending device of type bender |
| CN102974665A (en) * | 2012-10-16 | 2013-03-20 | 江苏华阳金属管件有限公司 | Elbow forming device |
| CN105251831B (en) * | 2015-09-21 | 2017-05-03 | 江苏大学 | Adjustable deformation preventing device for angle iron bending |
| CN106424361B (en) * | 2016-10-19 | 2018-05-18 | 中国人民解放军63926部队 | A kind of aluminium alloy bone row and the bending machine die and its bending method of edge sealing |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1335539U (en) * | ||||
| CH613883A5 (en) * | 1977-04-29 | 1979-10-31 | Haeusler Christian Ag | Multi-roll machine for bending sectional bars and a method for its operation |
| US4117702A (en) * | 1977-06-06 | 1978-10-03 | The Boeing Company | Rolling machines for contouring tapered structural members |
-
1984
- 1984-09-12 CH CH4346/84A patent/CH664101A5/en not_active IP Right Cessation
-
1985
- 1985-08-08 AT AT85110004T patent/ATE58314T1/en not_active IP Right Cessation
- 1985-08-08 EP EP85110004A patent/EP0174501B1/en not_active Expired - Lifetime
- 1985-08-08 DE DE8585110004T patent/DE3580553D1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| ATE58314T1 (en) | 1990-11-15 |
| DE3580553D1 (en) | 1990-12-20 |
| EP0174501A3 (en) | 1986-11-12 |
| CH664101A5 (en) | 1988-02-15 |
| EP0174501A2 (en) | 1986-03-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE2813636C3 (en) | Process and device for the production of profiles made of metal, primarily steel profiles | |
| EP0706843B1 (en) | Method and device for the production of curved workpieces | |
| EP1456421B1 (en) | Method and device for controlled straightening and cooling of a wide metal strip, especially a steel strip or sheet metal, running out of a hot rolled strip rolling mill | |
| EP2585236A1 (en) | Stretch-bending straightener | |
| DE1940341B2 (en) | Method and device for producing metal strips, in particular tubular welding electrodes, from a rod material | |
| DE2708458C2 (en) | Device for joint extrusion of at least two composite profiles | |
| EP0174501B1 (en) | Method for bending section bars of metal, in particular of aluminium, with non supported webs, lips or the like | |
| EP1371430B1 (en) | Method and apparatus for the manufacturing of a hollow profile | |
| EP1372877B1 (en) | Method for extrusion and extrusion plant, in particular for production of bent extruded products | |
| DE1016675B (en) | Device for rounding sheet metal strips for the production of welded pipes with longitudinal seams, especially those of larger diameter | |
| DE2528850C3 (en) | Pilgrim step mill for pipe cold rolling | |
| DE102007050721B4 (en) | Straightening machine for straightening profiles | |
| EP0685610B1 (en) | Girder made of metal, in particular of steel, manufactured from a web and at least one flange, by welding them together using radiant energy and a method of manufacturing the same | |
| EP0474625B1 (en) | Method of dressing in particular endless bands | |
| DE3039237C2 (en) | Device for forming a round wire into a metal band | |
| DE19857626C2 (en) | Method and device for surface treatment of elongated profiles and their use | |
| EP0362122A1 (en) | Method of heat-straightening steel tubes | |
| DE102020133419B4 (en) | Arrangement, method and straightening unit for bending the end area with the two ends of pointed-bent tubes with a 3-roll bending machine | |
| EP0306672B1 (en) | Method and apparatus for helically coiling metal strip on tubes | |
| DE10239149B4 (en) | Device for producing a straight-line groove in a workpiece made of metal, in particular steel, and use of the device | |
| EP2233224B1 (en) | Method for cold forming metal tubes | |
| DE69327045T2 (en) | METHOD FOR PRODUCING WELDED TUBES AND MOLDING DEVICE THEREFOR | |
| DE19602920A1 (en) | Process and device for the production of pipes according to the UOE process | |
| DE3887326T2 (en) | Anchor bolt. | |
| EP0671983A1 (en) | Process and linear shaping machine for truing rod-like material. |
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: A2 Designated state(s): AT DE FR GB IT SE |
|
| PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
| AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT DE FR GB IT SE |
|
| 17P | Request for examination filed |
Effective date: 19870429 |
|
| 17Q | First examination report despatched |
Effective date: 19880408 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT DE FR GB IT SE |
|
| REF | Corresponds to: |
Ref document number: 58314 Country of ref document: AT Date of ref document: 19901115 Kind code of ref document: T |
|
| ITF | It: translation for a ep patent filed | ||
| ET | Fr: translation filed | ||
| REF | Corresponds to: |
Ref document number: 3580553 Country of ref document: DE Date of ref document: 19901220 |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) | ||
| ITTA | It: last paid annual fee | ||
| 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 | ||
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: 732E |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: TP |
|
| ITPR | It: changes in ownership of a european patent |
Owner name: CESSIONE;WALBA MACHINERY LTD |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 19940623 Year of fee payment: 10 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19940729 Year of fee payment: 10 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19940802 Year of fee payment: 10 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 19940824 Year of fee payment: 10 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19940829 Year of fee payment: 10 |
|
| EAL | Se: european patent in force in sweden |
Ref document number: 85110004.0 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Effective date: 19950808 Ref country code: AT Effective date: 19950808 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Effective date: 19950809 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 19950808 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Effective date: 19960430 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19960501 |
|
| EUG | Se: european patent has lapsed |
Ref document number: 85110004.0 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |