EP0551658B2 - Méthode pour le dressage des tôles - Google Patents

Méthode pour le dressage des tôles Download PDF

Info

Publication number
EP0551658B2
EP0551658B2 EP92122121A EP92122121A EP0551658B2 EP 0551658 B2 EP0551658 B2 EP 0551658B2 EP 92122121 A EP92122121 A EP 92122121A EP 92122121 A EP92122121 A EP 92122121A EP 0551658 B2 EP0551658 B2 EP 0551658B2
Authority
EP
European Patent Office
Prior art keywords
straightening
roll
sheet metal
raised
lowered
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP92122121A
Other languages
German (de)
English (en)
Other versions
EP0551658A1 (fr
EP0551658B1 (fr
Inventor
Willi Benz
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.)
SMS Siemag AG
Original Assignee
SMS Demag AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6449586&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0551658(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by SMS Demag AG filed Critical SMS Demag AG
Publication of EP0551658A1 publication Critical patent/EP0551658A1/fr
Publication of EP0551658B1 publication Critical patent/EP0551658B1/fr
Application granted granted Critical
Publication of EP0551658B2 publication Critical patent/EP0551658B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
    • B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers

Definitions

  • the invention relates to a method for straightening of sheet metal in which the sheet metal is passed through by several individually adjustable upper and lower Straightening rollers formed, according to the sheet cross-section and the nominal sheet strength Straightening columns promoted and after initial Maximum deformation below with decreasing Deformation degree bent several times alternately being the straightening area of a straightening machine towards thicker sheets using a going beyond the nominal plate thickness of the straightening area Sheet thicknesses smaller number engaged existing straightening roles and thus larger Straightening role division is expanded.
  • the invention is based on the object To create procedures that improve operation enable a roller leveler.
  • the invention lies in the following partly through experience, partly through experimentation Understandings and considerations: It can be assumed that the design the residual stress state and the corresponding internal moment history the most important Influences the target quality. It is the type of role employment of crucial Importance. With e.g. Profile roll straightener falls especially that they have relatively few straightening roles - about seven to nine - are equipped. The reason lies in the individual employability of the lower ones Roll. The first one becomes extremely strong and the following ones are, however, employed very weakly. The Straightening quality to be achieved is quite good.
  • Sheet metal straightening can be done in this way with just a few straightening rollers with the least effort perform deformation energy and forces, according to the current state of knowledge the following exaggerations on the individual Roles are to be chosen.
  • the rolling stock or incoming Sheet metal is heavily plasticized on the inlet side, so that across the width of the straight roll which also serves as a tool, a uniform one and stable yield stress condition in the sheet sets.
  • metal sheets are above the nominal sheet thickness fewer rolls and less hyperextension, because by lowering or raising Straightening rollers quasi enlarged and the maximum roller straightening force is significantly reduced becomes. While with the known roller straightening machines due to the leverage ratio hardly any maximum straightening force on the second roll can come, as with the third role, can be the leverage ratios in the extended straightening system by lowering or raising the this purpose preferably individually adjustable upper and lower straightening rolls z. B. change so that the greatest force is on the inlet side second role occurs.
  • the hyperextension roughly in proportion to reduce the sheet thickness increase what experience has shown that it is sufficient. So that can compensate for an increase in the drive shaft torques. Instead of reducing hyperextension, let alternatively, the maximum straightening yield point because of the quadratic influence.
  • the third and fourth, sixth and seventh as well as ninth and tenth Roll as well as with a fourteen and fifteen roll straightener the third and fourth, sixth and seventh, ninth and tenth as well twelfth and thirteenth roles lowered or raised etc.
  • the third and fourth, sixth and seventh, ninth and tenth as well twelfth and thirteenth roles lowered or raised etc.
  • a roller leveler 1 With a roller leveler 1, the frame by two stands anchored to the foundation 2, 3 formed by an upper and a lower Traverse 4, 5 are rigidly connected. On the top Traverse 4 is an upper roller mill 6 through not cylinder shown held; a lower roller mill 7 can be moved on the lower crossmember 5 arranged. On the lower roller mill 7 are Control wedges 8 stored, each by a pressure cylinder 9 are displaceable. On every rule wedge 8 is a bearing bracket 11 for lower straightening rollers 12 and associated support rollers 13 supported; are between the support rollers 13, respectively Support bearing 14 arranged. Furthermore, there are several upper straightening rollers 15 through between support bearings 16 arranged support rollers 17 supported on their bales.
  • Both the lower and the upper Straightening rollers 12 and 15 are not shown by means Adjusting devices arranged individually adjustable, i.e. the upper straightening rollers 15 can be raised and the lower straightening rollers 12 lowered become.
  • the upper straightening rollers 15 and support rollers 17 are mounted on a bearing bracket 18.
  • everyone the adjacent bearing bracket 18 is on a control wedge 21 supported, the other side at the top Roller mill 6 is applied.
  • the control wedges 21 are displaceable by one pressure medium cylinder 22 each.
  • the upper and lower straightening rollers 15, 12 are individually driven and with cardan shafts 23 connected to a drive, not shown.
  • the residual stress state is at Fifteen, twelve and nine roller straighteners with hyperextension data with internal torque balance shown and that the invention Adjustment system (see below the center of the sheet 19) compared to conventional roller straightening machines, where all roles against that Sheet metal are employed (cf. above the sheet metal center 19).
  • the nine to fifteen Ownership of roles is likely due to the invention advanced adjustment system, in which the largest Role number can be introduced, essentially the to cover the entire range in question be, with a roller leveler with nine Rolling is preferred
  • It results from the determined hyperextension distribution in conventional Employment a roughly serrated residual stress state towards the center of the sheet and one finely toothed residual stress state to the Sheet metal edges.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Claims (8)

  1. Procédé pour le dressage de tôles dans lequel la tôle est alimentée à travers des fentes de dressage qui sont formées par plusieurs rouleaux à dresser supérieurs et inférieure, réglables individuellement, et qui sont réglées en fonction de la section de la tôle et de la résistance nominale de la tôle et dans lequel la tôle est pliée, après une déformation maximale de départ, plusieurs fois et alternativement avec un taux de déformation décroissant, la plage de dressage d'une machine de dressage étant élargie, pour des tôles plus épaisses, par un plus petit nombre de rouleaux de dressage qui interagissent lorsque les épaisseurs des tôles sont supérieures à l'épaisseur nominale de tôle de la plage de dressage et l'écartement des rouleaux étant par conséquent agrandi, caractérisé en ce qu'en levant des rouleaux de dressage supérieurs réglables individuellement ou en abaissant des rouleaux de dressage inférieurs réglables individuellement, on règle des écartements différents pour autant que les distances entre les rouleaux de dressage qui interagissent, dans un réglage de la machine de dressage, ne sont pas tous identiques.
  2. Procédé selon la revendication 2, caractérisé en ce que l'allongement est réduit dans le rapport de l'augmentation de l'épaisseur de la tôle.
  3. Procédé selon l'une ou plusieurs des revendications 1 à 2, caractérisé en ce que dans une machine de dressage à six rouleaux, on lève ou on abaisse respectivement le troisième et quatrième rouleau, vus dans le sens allant du côté entrée vers le côté sortie.
  4. Procédé selon l'une ou plusieurs des revendications 1 à 2, caractérisé en ce que dans une machine de dressage à huit rouleaux et une machine à neuf rouleaux, on lève ou on abaisse respectivement le troisième et le quatrième rouleau ainsi que le sixième et le septième rouleau, vus dans le sens allant du côté entrée vers le côté sortie.
  5. Procédé selon l'une ou plusieurs des revendications 1 à 2, caractérisé en ce que dans une machine de dressage à dix rouleaux, on lève ou on abaisse respectivement le troisième et le quatrième rouleau ainsi que le septième et le huitième rouleau, vus dans le sens allant du côté entrée vers le côté sortie.
  6. Procédé selon l'une ou plusieurs des revendications 1 à 2, caractérisé en ce que dans une machine de dressage à onze rouleaux et une machine à douze rouleaux, on lève ou on abaisse respectivement le troisième et le quatrième rouleau, le sixième et le septième rouleau ainsi que le neuvième et le dixième rouleau, vus dans le sens allant du côté entrée vers le côté sortie.
  7. Procédé selon l'une ou plusieurs des revendications 1 à 2, caractérisé en ce que dans une machine de dressage à treize rouleaux, on lève ou on abaisse respectivement le troisième et le quatrième rouleau, le septième et le huitième rouleaux ainsi que le onzième et le douzième rouleau, vus dans le sens allant du côté entrée vers le côté sortie.
  8. Procédé selon l'une ou plusieurs des revendications 1 à 2, caractérisé en ce que dans une machine de dressage à quatorze rouleaux et une machine à quinze rouleaux, on lève ou on abaisse respectivement le troisième et le quatrième rouleau, le sixième et le septième rouleau, le neuvième et le dixième rouleau ainsi que le douzième et le treizième rouleau, vus dans le sens allant du côté entrée vers le côté sortie.
EP92122121A 1992-01-16 1992-12-30 Méthode pour le dressage des tôles Expired - Lifetime EP0551658B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4200922A DE4200922A1 (de) 1992-01-16 1992-01-16 Verfahren und vorrichtung zum richten von blech
DE4200922 1992-01-16

Publications (3)

Publication Number Publication Date
EP0551658A1 EP0551658A1 (fr) 1993-07-21
EP0551658B1 EP0551658B1 (fr) 1995-06-21
EP0551658B2 true EP0551658B2 (fr) 2001-07-18

Family

ID=6449586

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92122121A Expired - Lifetime EP0551658B2 (fr) 1992-01-16 1992-12-30 Méthode pour le dressage des tôles

Country Status (5)

Country Link
US (1) US5412968A (fr)
EP (1) EP0551658B2 (fr)
AT (1) ATE123977T1 (fr)
DE (2) DE4200922A1 (fr)
ES (1) ES2073853T5 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4415048A1 (de) * 1994-04-29 1995-11-02 Schloemann Siemag Ag Richtmaschine zum Richten von Blechen und Bändern
JP3427863B2 (ja) * 1994-12-27 2003-07-22 住友金属鉱山株式会社 電解用種板の歪み矯正方法
DE19506224C2 (de) * 1995-02-22 1998-09-24 Schleicher Gmbh & Co Hermann Walzenrichtmaschine zum Richten von Blechen
US6148644A (en) * 1995-03-06 2000-11-21 Lever Brothers Company, Division Of Conopco, Inc. Dry cleaning system using densified carbon dioxide and a surfactant adjunct
DE19705457B4 (de) * 1997-02-13 2006-01-12 Sms Demag Ag Blechrichtmaschine
US6598445B2 (en) 2001-04-16 2003-07-29 Automatic Feed Company Leveling machine and method
ITMI20051413A1 (it) * 2005-07-22 2007-01-23 Danieli Off Mecc Dispositivo di azionamento rulli di macchine per la lavorazione di prodotti metallici
CN100354055C (zh) * 2005-09-05 2007-12-12 张挺胜 辊式板材矫正机
US7637132B2 (en) * 2006-02-06 2009-12-29 Butech Bliss Work roll scraper for roller levelers
WO2011092754A1 (fr) 2010-01-29 2011-08-04 スチールプランテック株式会社 Egalisateur à rouleaux
CN102672005B (zh) * 2012-06-07 2014-07-30 常州市中安机械制造有限公司 液压式精密矫平机
AT512898B1 (de) * 2012-08-03 2013-12-15 Evg Entwicklung Verwert Ges Richtrolleneinheit
DE102016121448B4 (de) 2016-11-09 2018-08-30 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh Verfahren und Vorrichtung zum Streckbiegerichten eines Metallbandes
DE102018203734A1 (de) * 2017-03-13 2018-09-13 Sms Group Gmbh Richtstrategien zum Betreiben einer Rollenrichtmaschine und Rollenrichtmaschine
CN110418683B (zh) 2017-03-13 2021-01-15 Sms集团有限公司 用于运行辊式矫直机的方法以及辊式矫直机

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2592948A (en) * 1947-11-26 1952-04-15 Birdsboro Steel Foundry & Mach Roller leveler
US2720243A (en) * 1951-06-20 1955-10-11 Continental Foundry & Machine Bar and tube straightening machine
US2852065A (en) * 1954-08-23 1958-09-16 Birdsboro Steel Foundry & Mach Roller leveller having means to move individual rolls into and out of work engagement
DE2103892A1 (en) * 1971-01-28 1972-08-24 Schloemann AG, 4000 Düsseldorf Sheet metal straightening - partic cold plate by a reverse bending method
US3765210A (en) * 1972-02-22 1973-10-16 Mesta Machine Co Frameless roll leveler, straightener and the like
CA982459A (en) * 1972-11-14 1976-01-27 William T. Arnold Apparatus for straightening and cutting reinforcing bar
DE3308616C2 (de) * 1983-03-11 1993-11-25 Schloemann Siemag Ag Verfahren und Maschine zum Richten von Blech
DE3337957A1 (de) * 1983-10-19 1985-05-02 SMS Schloemann-Siemag AG, 4000 Düsseldorf Blechrichtmaschine
JPS61245917A (ja) * 1985-04-24 1986-11-01 Mitsubishi Heavy Ind Ltd ロ−ラレベラ
JPS62203616A (ja) * 1986-03-03 1987-09-08 Mitsubishi Heavy Ind Ltd ロ−ラレベラ−装置

Also Published As

Publication number Publication date
ES2073853T5 (es) 2001-11-16
US5412968A (en) 1995-05-09
DE59202621D1 (de) 1995-07-27
EP0551658A1 (fr) 1993-07-21
ES2073853T3 (es) 1995-08-16
ATE123977T1 (de) 1995-07-15
EP0551658B1 (fr) 1995-06-21
DE4200922A1 (de) 1993-07-22

Similar Documents

Publication Publication Date Title
EP0551658B2 (fr) Méthode pour le dressage des tôles
DE3241995C2 (fr)
DE102012217493A1 (de) Richtmaschine
DE3529160A1 (de) Formwalzvorrichtung
DE69009362T2 (de) Walzwerk und Walzverfahren.
DE1809638A1 (de) Vorrichtung zum Bearbeiten von Blech- oder Bandmaterial
EP0274722B1 (fr) Planeuse pour tôle et bandes
EP0570770A1 (fr) Procédé et machine de dressage pour dresser des tôles et bandes
EP0371280B1 (fr) Procédé de dressage de tôles, bandes, plaques, profilés, poutres etc.
DE102010049908B4 (de) Vielwalzen-Walzwerk vom Cluster-Typ
DE69209632T2 (de) Verfahren und Vorrichtung zum Walzen von Metallen zur Herstellung von rundem Stabmaterial oder Walzdraht aus rundem Stab- oder Drahtmaterial mit grösserem Durchmesser
DE29980239U1 (de) Walzwerk mit zweidimensional gesteuerter Walzendurchbiegung
EP0679454B1 (fr) Machine de dressage pour dresser des tÔles et des bandes
EP1197272B1 (fr) Machine à cintrer à deux rouleaux ainsi que procédé pour cintrer des tôles
DE3308616C2 (de) Verfahren und Maschine zum Richten von Blech
EP1491270A1 (fr) Machine à dresser
DE19506224C2 (de) Walzenrichtmaschine zum Richten von Blechen
DE29780451U1 (de) Hochgenaues Walzwerk mit zweidimensionaler Biegungssteuerung
AT397624B (de) Vorrichtung zum biegen von kanten
DE69612225T2 (de) Verfahren und Vorrichtung zum Richten von flachen metallischen Produkten sowie Blechen, Metallbanden
DE538630C (de) Fuehrungseinrichtung fuer die einzelnen Staender von kontinuierlichen Blech- und Streifenwalzwerken
DE69310586T2 (de) Verfahren und Anlage zum Walzen einer Metallplatte
DE2416148A1 (de) Rollenrichtmaschine fuer stahlprofile
DE2456782A1 (de) Verfahren und vorrichtung zum richten von profilstahl
DE1452834A1 (de) Vorrichtung zum Abflachen und Einrollen von Metallstreifen

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 DE ES FR GB IT LU NL SE

17P Request for examination filed

Effective date: 19930729

17Q First examination report despatched

Effective date: 19940601

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

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

REF Corresponds to:

Ref document number: 123977

Country of ref document: AT

Date of ref document: 19950715

Kind code of ref document: T

REF Corresponds to:

Ref document number: 59202621

Country of ref document: DE

Date of ref document: 19950727

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2073853

Country of ref document: ES

Kind code of ref document: T3

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

Effective date: 19950925

PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

26 Opposition filed

Opponent name: CLECIM

Effective date: 19960321

NLR1 Nl: opposition has been filed with the epo

Opponent name: CLECIM

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

RDAH Patent revoked

Free format text: ORIGINAL CODE: EPIDOS REVO

APAC Appeal dossier modified

Free format text: ORIGINAL CODE: EPIDOS NOAPO

APAE Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOS REFNO

APAC Appeal dossier modified

Free format text: ORIGINAL CODE: EPIDOS NOAPO

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: SMS DEMAG AG

NLT2 Nl: modifications (of names), taken from the european patent patent bulletin

Owner name: SMS DEMAG AG

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

Ref country code: NL

Payment date: 20001121

Year of fee payment: 9

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

Ref country code: LU

Payment date: 20001128

Year of fee payment: 9

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

Ref country code: ES

Payment date: 20001218

Year of fee payment: 9

APAC Appeal dossier modified

Free format text: ORIGINAL CODE: EPIDOS NOAPO

PLAW Interlocutory decision in opposition

Free format text: ORIGINAL CODE: EPIDOS IDOP

PUAH Patent maintained in amended form

Free format text: ORIGINAL CODE: 0009272

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: PATENT MAINTAINED AS AMENDED

27A Patent maintained in amended form

Effective date: 20010718

AK Designated contracting states

Kind code of ref document: B2

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

NLR2 Nl: decision of opposition
ITF It: translation for a ep patent filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: DC2A

Kind code of ref document: T5

Effective date: 20010926

GBTA Gb: translation of amended ep patent filed (gb section 77(6)(b)/1977)
NLR3 Nl: receipt of modified translations in the netherlands language after an opposition procedure
ET3 Fr: translation filed ** decision concerning opposition
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: 20011230

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: NL

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

Effective date: 20020701

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

Effective date: 20020701

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 NON-PAYMENT OF DUE FEES

Effective date: 20021231

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20030113

APAH Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNO

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

Ref country code: GB

Payment date: 20110520

Year of fee payment: 19

Ref country code: AT

Payment date: 20110512

Year of fee payment: 19

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

Ref country code: FR

Payment date: 20120105

Year of fee payment: 20

Ref country code: SE

Payment date: 20111223

Year of fee payment: 20

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

Ref country code: BE

Payment date: 20111229

Year of fee payment: 20

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

Ref country code: DE

Payment date: 20111222

Year of fee payment: 20

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

Ref country code: IT

Payment date: 20111229

Year of fee payment: 20

BE20 Be: patent expired

Owner name: SCHLOEMANN-SIEMAG A.G. *SMS

Effective date: 20121230

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59202621

Country of ref document: DE

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20121229

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

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 EXPIRATION OF PROTECTION

Effective date: 20121229

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK07

Ref document number: 123977

Country of ref document: AT

Kind code of ref document: T

Effective date: 20121230

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

Ref country code: DE

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20130101