EP2148752A1 - Procédé de fabrication d'élément de base d'arbre creux et élément de base d'arbre creux fabriqué selon ce procédé - Google Patents

Procédé de fabrication d'élément de base d'arbre creux et élément de base d'arbre creux fabriqué selon ce procédé

Info

Publication number
EP2148752A1
EP2148752A1 EP08758076A EP08758076A EP2148752A1 EP 2148752 A1 EP2148752 A1 EP 2148752A1 EP 08758076 A EP08758076 A EP 08758076A EP 08758076 A EP08758076 A EP 08758076A EP 2148752 A1 EP2148752 A1 EP 2148752A1
Authority
EP
European Patent Office
Prior art keywords
hollow shaft
preform
particular according
forming
bore
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
EP08758076A
Other languages
German (de)
English (en)
Other versions
EP2148752B1 (fr
Inventor
Matthias Derse
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.)
Neumayer Tekfor Holding GmbH
Original Assignee
Neumayer Tekfor Holding 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 Neumayer Tekfor Holding GmbH filed Critical Neumayer Tekfor Holding GmbH
Publication of EP2148752A1 publication Critical patent/EP2148752A1/fr
Application granted granted Critical
Publication of EP2148752B1 publication Critical patent/EP2148752B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/06—Making machine elements axles or shafts
    • B21K1/10—Making machine elements axles or shafts of cylindrical form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/10—Piercing billets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/06—Making machine elements axles or shafts
    • B21K1/063—Making machine elements axles or shafts hollow

Definitions

  • EP 1 745 870 A1 has disclosed a method for producing hollow shaft main bodies, this method being characterized in that, in a first step, the outer surface of a cylindrical starting material is machined by forming to at least a predetermined diameter transition in the longitudinal direction of a base body to obtain. During this first step, namely by means of a cross wedge rolling process, a hole should also be formed by means of one or two mandrels. Thereafter, in a further method step, namely by incremental forming, the outer and / or inner surface of the base body is produced.
  • the method for producing hollow-shaft basic bodies according to the invention provided with at least one bore is now characterized in that, in a first step, in which both the outer surface of a cylindrical starting material and the bore are formed by forming a preform or a blank is processed, at least a predetermined diameter transition in the longitudinal direction of the preform is generated, and
  • the preform is incrementally formed by reshaping the outer and / or inner surface of the main body to form the hollow shaft
  • Body is reshaped.
  • the blanks By producing a preform or a blank by forming, which is particularly suitable for the vast majority of applications, a forging process, the blanks can be made in simple tools and also provided with a hole and then serve as a raw material for the next step.
  • the bore can either only partially be introduced into the body or be continuous. Even with continuous drilling only a small amount of waste is present through the appropriately for forging process belonging punching the Butzens.
  • Forging tools By the use of forging tools a particularly favorable mass production is possible.
  • the previously mentioned punching the Butzens can also be done in a separate operation in a tool outside of a forging tool.
  • the forming into a preform can also be done in a forming process, the half-warm or - z. B. depending on the required degree of deformation or application - is carried out cold.
  • the preform thus produced is further reshaped, namely the inner and / or outer surface is reshaped, is suitable in particularly favorable manner the so-called rotary swaging, which may be application or product-related cold or Halbwarmrundkneten.
  • rotary swaging which may be application or product-related cold or Halbwarmrundkneten.
  • the invention further relates to hollow shafts, z.
  • transmission shafts which are produced by the inventive combination of at least one of the cited in the claims and protectable process steps, wherein the shaft has a continuous or only partially introduced bore.
  • the preform 1a has a shank portion 2a and a flange portion 3a and a through bore 4a.
  • the shaft region as well as the bore may be cylindrical or conical.
  • the preform 1a is made by a forging process, which is performed in a multi-stage mold.
  • One of the consequences of the bore 4a is introduced to a slug 5.
  • This slug is either punched out in a next station or can be punched out in a tool outside the forging tool.
  • the preform 1a is converted into the hollow shaft main body 1b, in particular incrementally, in particular by swaging, while the flange region 3a can be largely retained and the incremental deformation carried out in the region adjoining the region 3b.
  • a cylindrical or profiled mandrel can be inserted in sections from the side facing away from the flange region 3a by corresponding preforming of the region 2b and 2b ' .
  • FIG. 2 shows a further embodiment according to the invention, wherein the upper region 11 a of FIG. 2 represents the preform and the lower region in turn represents the hollow shaft main body 11 b.
  • the introduced in the forging process bore 12a extends only partially through the blank 11a, the area generated by incremental forming is denoted by 13.
  • the forging preform 21a is provided with an undercut 22 which, like the blank 21a, is made by forging.
  • the hollow shaft main body 21b shown in the lower part of Figure 3 is formed in the region 23 by swaging.
  • the region 23 may be supported by a mandrel during the forming process depending on the desired inner shape.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
EP08758076A 2007-05-26 2008-05-15 Procédé de fabrication d'élément de base d'arbre creux Not-in-force EP2148752B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007024743 2007-05-26
PCT/DE2008/000833 WO2008145092A1 (fr) 2007-05-26 2008-05-15 Procédé de fabrication d'éléments de base d'arbre creux et éléments de base d'arbre creux fabriqués selon ce procédé

Publications (2)

Publication Number Publication Date
EP2148752A1 true EP2148752A1 (fr) 2010-02-03
EP2148752B1 EP2148752B1 (fr) 2012-04-18

Family

ID=39773115

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08758076A Not-in-force EP2148752B1 (fr) 2007-05-26 2008-05-15 Procédé de fabrication d'élément de base d'arbre creux

Country Status (4)

Country Link
EP (1) EP2148752B1 (fr)
AT (1) ATE553867T1 (fr)
DE (2) DE102008023696A1 (fr)
WO (1) WO2008145092A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102319854A (zh) * 2011-08-18 2012-01-18 贵州航天新力铸锻有限责任公司 超临界汽水分离器侧封头的锻制方法
DE102012106585A1 (de) * 2012-07-20 2014-01-23 Benteler Automobiltechnik Gmbh Verfahren zur Herstellung einer Hochdruckkraftstoffleitung
DE102015221842A1 (de) 2015-11-06 2017-05-11 Volkswagen Aktiengesellschaft Verfahren zur Herstellung einer Getriebewelle
DE102017212989A1 (de) * 2017-07-27 2019-01-31 Volkswagen Aktiengesellschaft Herstellung einer Hohlwelle durch Radialumformen eines kurzen Rohlings
DE102019111048A1 (de) * 2019-04-29 2020-10-29 Volkswagen Aktiengesellschaft Verfahren zum Herstellen einer Hohlwelle

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19705279A1 (de) * 1997-02-12 1997-11-20 Daimler Benz Ag Verfahren zum Herstellen von Rohlingen für hohle Getriebewellen
JP2005040842A (ja) * 2003-07-24 2005-02-17 Uk:Kk 中空段付軸の成形方法
DE102006019234A1 (de) * 2005-06-14 2006-12-28 IFUTEC Ingenieurbüro für Umformtechnik GmbH Verfahren zur Umformung eines Massivelements
EP1745870A1 (fr) * 2005-07-22 2007-01-24 Johann Hay GmbH & Co. KG, Automobiltechnik Méthode de fabrication des corps de base des axes creuses

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008145092A1 *

Also Published As

Publication number Publication date
DE102008023696A1 (de) 2008-12-24
EP2148752B1 (fr) 2012-04-18
ATE553867T1 (de) 2012-05-15
WO2008145092A1 (fr) 2008-12-04
DE112008002036A5 (de) 2010-04-29

Similar Documents

Publication Publication Date Title
DE102008036226B4 (de) Verfahren zur Herstellung einer Hohlwelle
DE69106760T2 (de) Verfahren zum Herstellen eines Reibringes.
EP2440341B1 (fr) Procédé et dispositif de fabrication de pièces allongées en métal pourvues de rainures hélicoïdales, en particulier des forets hélicoïdaux ou des vis sans fin
DE102013226929B4 (de) Verfahren zur umformenden Herstellung einer Hohlwelle
EP2641673B1 (fr) Procédé et dispositif de fabrication d'une section de raccordement comme élément d'un outil
DE102012005106A1 (de) Verfahren zur Herstellung einer Hohlwelle und Vorrichtung hierfür
EP2344288A2 (fr) Procédé et dispositif pour réaliser un filetage extérieur sans enlèvement de matière sur des pièces creuses en métal
DE3235115A1 (de) Schmiedeverfahren zum herstellen einer flanschwelle
EP2484462A2 (fr) Utilisation d'un procédé de refoulement chaud, utilisation d'un outil de déformage, procédé de production d'une préforme forgée et dispositif de déformage ou dispositif de refoulement chaud
EP0313985B1 (fr) Procédé de fabrication d'un arbre à cames
EP2148752B1 (fr) Procédé de fabrication d'élément de base d'arbre creux
EP2458131B1 (fr) Procédé pour la fabrication de l'extrémité enfichable d'un foret
EP1689556A2 (fr) Procede de formage a froid pour produire des pivots spheriques
EP1252947B1 (fr) Procédé de fabrication d'un élément d'essieu pour un véhicule automobile
EP1551577B1 (fr) Procede et dispositif pour produire une jante pour pneumatiques
EP1024913B1 (fr) Procede et dispositif pour produire un arbre a partir d'un element tubulaire
EP3221068B1 (fr) Procédé de fabrication d'un élément moulé à symétrie de révolution
EP1745870A1 (fr) Méthode de fabrication des corps de base des axes creuses
EP3737514B1 (fr) Procédé et dispositif servant à fabriquer des soupapes creuses refroidies à l'intérieur
DE102021203015B4 (de) Verfahren zum Herstellen eines Bauteils mit mindestens einem Vorsprung sowie damit hergestelltes Bauteil
DE3101123A1 (de) Verfahren und einrichtung zum verformen eines metallstabes in ein tulpenfoermiges teil durch fliesspressen in einer geschlossenen kammer
DE102008053474B4 (de) Verfahren zum Formen eines Nockenvorsprungs
EP3585986B1 (fr) Procédé de fabrication d'une soupape à refroidissement intérieur dotée d'une structure de refroidissement et soupape fabriquée au moyen dudit procédé
DE102007005886B4 (de) Verfahren zur Herstellung eines Nutzfahrzeug-Achsschenkels
DE29921590U1 (de) Drückrolle und Drückwalzmaschine zum Formen eines scheibenförmigen Teiles mit Nabe

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

17P Request for examination filed

Effective date: 20091030

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA MK RS

17Q First examination report despatched

Effective date: 20100317

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RTI1 Title (correction)

Free format text: METHOD FOR PRODUCING HOLLOW SHAFT BASE BODIES

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 553867

Country of ref document: AT

Kind code of ref document: T

Effective date: 20120515

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502008006983

Country of ref document: DE

Effective date: 20120614

REG Reference to a national code

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20120418

LTIE Lt: invalidation of european patent or patent extension

Effective date: 20120418

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

Ref country code: IS

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

Effective date: 20120818

Ref country code: LT

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

Effective date: 20120418

Ref country code: SE

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

Effective date: 20120418

Ref country code: CY

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

Effective date: 20120418

Ref country code: FI

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

Effective date: 20120418

Ref country code: PL

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

Effective date: 20120418

Ref country code: NO

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

Effective date: 20120718

BERE Be: lapsed

Owner name: NEUMAYER TEKFOR HOLDING G.M.B.H.

Effective date: 20120531

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

Ref country code: SI

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

Effective date: 20120418

Ref country code: LV

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

Effective date: 20120418

Ref country code: PT

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

Effective date: 20120820

Ref country code: HR

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

Effective date: 20120418

Ref country code: GR

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

Effective date: 20120719

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

Ref country code: MC

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

Effective date: 20120531

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: CH

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

Effective date: 20120531

Ref country code: EE

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

Effective date: 20120418

Ref country code: LI

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

Effective date: 20120531

Ref country code: CZ

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

Effective date: 20120418

Ref country code: SK

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

Effective date: 20120418

Ref country code: RO

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

Effective date: 20120418

Ref country code: NL

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

Effective date: 20120418

Ref country code: DK

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

Effective date: 20120418

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

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

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

Ref country code: BE

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

Effective date: 20120531

26N No opposition filed

Effective date: 20130121

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

Ref country code: IE

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

Effective date: 20120515

Ref country code: ES

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

Effective date: 20120729

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502008006983

Country of ref document: DE

Effective date: 20130121

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

Ref country code: MT

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

Effective date: 20120418

Ref country code: BG

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

Effective date: 20120718

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

Ref country code: GB

Payment date: 20130531

Year of fee payment: 6

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

Ref country code: FR

Payment date: 20130621

Year of fee payment: 6

Ref country code: IT

Payment date: 20130527

Year of fee payment: 6

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

Ref country code: DE

Payment date: 20130731

Year of fee payment: 6

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

Ref country code: TR

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

Effective date: 20120418

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: 20120515

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 553867

Country of ref document: AT

Kind code of ref document: T

Effective date: 20130515

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

Ref country code: HU

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

Effective date: 20080515

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

Ref country code: AT

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

Effective date: 20130515

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502008006983

Country of ref document: DE

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

Effective date: 20140515

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502008006983

Country of ref document: DE

Effective date: 20141202

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20150130

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 NON-PAYMENT OF DUE FEES

Effective date: 20141202

Ref country code: IT

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

Effective date: 20140515

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: 20140602

Ref country code: GB

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

Effective date: 20140515