EP0474591A2 - Tige encastrée avec prise centrale d'un foret - Google Patents

Tige encastrée avec prise centrale d'un foret Download PDF

Info

Publication number
EP0474591A2
EP0474591A2 EP91810638A EP91810638A EP0474591A2 EP 0474591 A2 EP0474591 A2 EP 0474591A2 EP 91810638 A EP91810638 A EP 91810638A EP 91810638 A EP91810638 A EP 91810638A EP 0474591 A2 EP0474591 A2 EP 0474591A2
Authority
EP
European Patent Office
Prior art keywords
opening
tool
locking element
central opening
tool according
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
EP91810638A
Other languages
German (de)
English (en)
Other versions
EP0474591B1 (fr
EP0474591A3 (en
Inventor
Werner Bogner
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.)
Hilti AG
Original Assignee
Hilti 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
Application filed by Hilti AG filed Critical Hilti AG
Publication of EP0474591A2 publication Critical patent/EP0474591A2/fr
Publication of EP0474591A3 publication Critical patent/EP0474591A3/de
Application granted granted Critical
Publication of EP0474591B1 publication Critical patent/EP0474591B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/14—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by boring or drilling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/08—Means for retaining and guiding the tool bit, e.g. chucks allowing axial oscillation of the tool bit
    • B25D17/084—Rotating chucks or sockets
    • B25D17/088—Rotating chucks or sockets with radial movable locking elements co-operating with bit shafts specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
    • B28D1/041—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs with cylinder saws, e.g. trepanning; saw cylinders, e.g. having their cutting rim equipped with abrasive particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D2217/003—Details relating to chucks with radially movable locking elements
    • B25D2217/0038—Locking members of special shape
    • B25D2217/0042—Ball-shaped locking members
    • 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
    • Y10S279/00—Chucks or sockets
    • Y10S279/904—Quick change socket
    • Y10S279/905—Quick change socket with ball detent
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00—Chucks or sockets
    • Y10T279/17—Socket type
    • Y10T279/17128—Self-grasping
    • Y10T279/17136—Yielding grasping jaws
    • Y10T279/17145—Ball or roller
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00—Chucks or sockets
    • Y10T279/17—Socket type
    • Y10T279/17761—Side detent
    • Y10T279/17786—Spring
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/89—Tool or Tool with support
    • Y10T408/895—Having axial, core-receiving central portion
    • Y10T408/8957—Having axial, core-receiving central portion and having stepped cutting edges
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/94—Tool-support
    • Y10T408/95—Tool-support with tool-retaining means
    • Y10T408/953—Clamping jaws

Definitions

  • the invention relates to a tool with an insertion shaft for tool holders of drilling and chiseling devices, an annular groove for engaging tangentially extending, cylindrical locking elements of the tool holder being provided on the insertion shaft.
  • the tool is automatically centered without play when supported by the conical receiving opening when inserted from the wall of the receiving opening.
  • the tools are rotated by means of driver strips on the tool holder, which engage in grooves on the tool side.
  • the tools are axially held by essentially radially displaceable pins which are arranged tangentially to the receiving opening and which engage in corresponding recesses, in particular in an annular groove of the tool.
  • Appropriate openings must be made in the walls, mainly for electrical or sanitary installations in buildings. This can be done through holes e.g. for pipes or corresponding recesses in walls in which e.g. Flush-mounted boxes for switches or sockets can be attached.
  • Such works are essentially openings that have a larger diameter.
  • larger drilling rigs are used for such work.
  • These devices are attached to the component using a base plate, vacuum or anchor fixings. The actual device is fastened to the base plate with the drill bit.
  • the difficulty with the use of a hand-held drill is the running of the drill bit when it is placed on a component. Precise positioning with such a drill bit cannot be achieved.
  • the prior art known from DE-A-30 29 101 relates to a hollow core bit with a center drill, the core bit having diamond grinding segments on the end face.
  • the center drill is clamped in a rear extension of the carrier body within a hole by means of a clamping screw.
  • the spiral part of the center drill extends at least over the entire length of the drill body of the hollow drill bit.
  • the center drill always remains clamped in the tool during the entire drilling process.
  • the disadvantage is that abrupt torques of different sizes can act on the center drill.
  • a screw pressing radially on the smooth, cylindrical shaft of the center drill With a screw pressing radially on the smooth, cylindrical shaft of the center drill, a secure, non-slip clamping of the center drill in the carrier body cannot be guaranteed. If the drill slides, no further immersion can take place in the component to be machined.
  • the invention has for its object to provide a way to quickly and easily attach and remove a drill used for centering the tool in the shank area of the tool in order to achieve a precise placement of a hand-held drill bit.
  • the object is achieved in that the insertion shaft has a central opening that is open in the direction of drilling and has an opening that is open from the annular groove to the central opening, wherein an essentially radially displaceable locking element is mounted in the opening, the radial extension of which exceeds the wall thickness in the opening area .
  • the opening of the opening towards the central opening advantageously has a smaller cross section than the radial projection of the locking element.
  • the opening can be largely cylindrical over its entire length, having a conical narrowing.
  • the narrowing of the opening has the task of preventing the locking element from falling out of the opening into the central opening.
  • the locking element can have different shapes.
  • the cross section of the locking element can be polygonal or rounded.
  • a locking element in the form of a ball is preferably used.
  • a spring element is expediently provided, which serves to prevent the locking element from falling out in the opposite direction to the central opening.
  • This element can e.g. consist of metal, plastic or rubber and can be designed as a compression or leaf spring.
  • a spring element is used, which is designed as an elastic ring.
  • This elastic ring can be made of metal, plastic or rubber.
  • the cross section can have different shapes, e.g. round or polygonal.
  • One or more driver strips for rotary driving are advantageously arranged in the central recess.
  • the planks of the driver strips are designed radially and protrude into the central recess.
  • a further advantageous embodiment of the invention is that the locking elements are held in the position protruding into the central opening by the locking elements which are inserted into the annular groove.
  • the tool can be designed, for example, in two parts, a hollow cylinder being connected to the insert shaft by means of a releasable connection, in particular a thread.
  • This has the advantage that the insertion shaft can be used as an adapter on which hollow cylinders can be fastened with drill bits of different diameters.
  • the hollow cylinder can have the external thread and the drill bit the matching thread.
  • Another embodiment is the arrangement of the external thread on the hollow cylinder and an adapter with the appropriate internal thread. It is now possible to drill a center hole on the component without the hollow cylinder with drill bit being arranged on the adapter. Depending on the application, the tool can be put together appropriately.
  • FIG. 1 shows a tool 1 with a drill bit 15 having diamond grains.
  • An insertion shaft 2 is connected at the end to a hollow cylinder (14) provided with thread 10.
  • the insertion shank 2 essentially has a conical contour corresponding to the receiving opening of a suitable tool holder known per se and therefore not shown, with a control angle A, which is preferably designed at 25 °.
  • a cylindrical, free end section 12 of the insertion shaft 2 corresponds in diameter E to a bore section, also not shown, in the receiving sleeve of a tool holder.
  • an annular groove 3 is provided in the region of the tapered contour of the insertion shaft 2, the base of which is formed by a flank B on the insertion side and a flank C opposite this.
  • the flank B is inclined at an angle D of 30 ° to the tool axis, while the opposite flank C is essentially perpendicular to the tool axis.
  • the insertion shaft 2 has a central opening 4 which is open in the drilling direction and has an opening 5 which is open from the annular groove 3 to the central opening 4.
  • an essentially radially displaceable locking element 6 is mounted, the radial extent of which exceeds the wall thickness F in the opening area.
  • two driver strips 9 are arranged in the central opening 4. It is thus possible to fasten a center drill 13 with a corresponding shaft centrally within a drill bit.
  • the grooves located on the shaft which are open to the rear, align with the driver strips 9, whereupon the latter can be inserted.
  • the locking element 6 arranged in the area of the annular groove 3 comes through the opening 5 running towards the central opening 4 into engagement with the recess 16, which is further arranged on the shaft of the center drill 13 and is closed on both sides.
  • This recess 16 serves only for the axial locking the center drill 13 in the shank 2.
  • the opening 5 has a cross-sectional constriction at the mouth 7 towards the central opening 4, which prevents the locking element 6 from falling out.
  • a spring element 8 is provided which is designed as an elastic ring. This can be made of metal, plastic or rubber.
  • the cross section can have different shapes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Drilling Tools (AREA)
  • Earth Drilling (AREA)
  • Gripping On Spindles (AREA)
  • Soil Working Implements (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Surgical Instruments (AREA)
  • Drilling And Boring (AREA)
EP91810638A 1990-09-01 1991-08-13 Tige encastrée avec prise centrale d'un foret Expired - Lifetime EP0474591B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4027820A DE4027820A1 (de) 1990-09-01 1990-09-01 Einsteckschaft mit zentraler bohreraufnahme
DE4027820 1990-09-01

Publications (3)

Publication Number Publication Date
EP0474591A2 true EP0474591A2 (fr) 1992-03-11
EP0474591A3 EP0474591A3 (en) 1993-02-10
EP0474591B1 EP0474591B1 (fr) 1995-12-27

Family

ID=6413448

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91810638A Expired - Lifetime EP0474591B1 (fr) 1990-09-01 1991-08-13 Tige encastrée avec prise centrale d'un foret

Country Status (8)

Country Link
US (1) US5174696A (fr)
EP (1) EP0474591B1 (fr)
JP (1) JPH06198637A (fr)
KR (1) KR920006084A (fr)
AT (1) ATE132066T1 (fr)
DE (2) DE4027820A1 (fr)
DK (1) DK0474591T3 (fr)
ES (1) ES2080935T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0732164A1 (fr) * 1995-03-17 1996-09-18 Hawera Probst GmbH Outil de perçage, en particulier pour le perçage par percussion de la pierre
CN1047119C (zh) * 1992-07-17 1999-12-08 希尔蒂股份公司 手工工具设备的刀具及其固紧装置

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5951026A (en) * 1997-12-12 1999-09-14 Black & Decker Inc. Removable chuck
US6079716A (en) * 1997-12-12 2000-06-27 Black & Decker Inc. Removable chuck
US6000888A (en) * 1999-02-12 1999-12-14 Snap-On Tools Company Quick coupler mechanism for power tool bits
ATE270599T1 (de) * 2000-09-01 2004-07-15 Credo Tech Corp Spindeleinheit für lochsäge und bohrer
DE10101451B4 (de) * 2001-01-15 2010-04-01 Robert Bosch Gmbh Schneidewerkzeug
JP4363019B2 (ja) * 2002-09-20 2009-11-11 マックス株式会社 コアビット
DE10324426A1 (de) * 2003-05-30 2004-12-16 Robert Bosch Gmbh Handwerkzeugmaschine
DE102005015100A1 (de) * 2005-04-01 2006-10-05 Robert Bosch Gmbh Einsatzwerkzeug und Werkzeughalter für eine Handwerkzeugmaschine

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1858276A (en) * 1930-04-18 1932-05-17 Millers Falls Co Hand tool
US1862337A (en) * 1931-01-28 1932-06-07 George W Emrick Tap, drill, and similar tool
DE891043C (de) * 1951-10-23 1953-09-24 Rehbein Geb Zentrierbohrer fuer Anbohrfraeser
US3243924A (en) * 1964-01-06 1966-04-05 Wheel Trueing Tool Co Diamond drill bit
US3398965A (en) * 1966-05-26 1968-08-27 Balas Collet Company Quick change tool holder
FR2193681A1 (fr) * 1972-07-25 1974-02-22 Bosch Gmbh Robert
DE2621898A1 (de) * 1976-05-17 1977-12-01 Rolf Krage Spannvorrichtung fuer praezisionswerkzeuge mit konstantem schaftdurchmesser
DE3205063C2 (de) * 1981-04-03 1986-10-09 Robert Bosch Gmbh, 7000 Stuttgart Werkzeughalter
JPS6047044B2 (ja) * 1981-07-14 1985-10-19 萬デザイン株式会社 電磁式ドリルスタンドの芯出し装置
DE3220794C2 (de) * 1982-06-03 1986-10-23 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Hülsenförmige Werkzeugaufnahme für Bohrhämmer
DE3434076A1 (de) * 1984-09-17 1986-04-17 Hilti Ag, Schaan Werkzeughalter fuer bohr- und meisselwerkzeuge
US4900202A (en) * 1988-09-08 1990-02-13 Wienhold James L Chuck assembly for tool bits

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1047119C (zh) * 1992-07-17 1999-12-08 希尔蒂股份公司 手工工具设备的刀具及其固紧装置
EP0732164A1 (fr) * 1995-03-17 1996-09-18 Hawera Probst GmbH Outil de perçage, en particulier pour le perçage par percussion de la pierre
US5788430A (en) * 1995-03-17 1998-08-04 Hawera Probst Gmbh Drilling tool for rotary percussion drilling

Also Published As

Publication number Publication date
DK0474591T3 (da) 1996-04-09
ATE132066T1 (de) 1996-01-15
ES2080935T3 (es) 1996-02-16
JPH06198637A (ja) 1994-07-19
EP0474591B1 (fr) 1995-12-27
DE59107142D1 (de) 1996-02-08
DE4027820A1 (de) 1992-03-05
EP0474591A3 (en) 1993-02-10
US5174696A (en) 1992-12-29
KR920006084A (ko) 1992-04-27

Similar Documents

Publication Publication Date Title
EP0175088B1 (fr) Porte-outil pour outils de perçage et de burinage
DE3027408C2 (de) Bohrvorrichtung zur Herstellung von Bohrlöchern mit Hinterschneidung
DE69318760T2 (de) Abrasive Werkzeuge
DE60132455T2 (de) Drehendes werkzeug mit einem ersetzbaren schneideinsatz an einem ende
EP0171358B1 (fr) Outil de forage pour perceuses à main
EP1009595A2 (fr) Systeme d'outil accouplable a l'arbre d'entrainement d'un tour
DE4101438A1 (de) Spindeladapter fuer werkzeughalter mit werkzeugeinstellsteuerung
DE2817721A1 (de) Kombiniertes bohr- und schraubwerkzeug
EP0474591B1 (fr) Tige encastrée avec prise centrale d'un foret
DE202022101626U1 (de) Vorrichtung zur Begrenzung der Eingriffstiefe eines Zerspanungswerkzeugs
CH661681A5 (de) Bohrfutter fuer schlagbohrbetrieb.
DE3428481C1 (de) Werkzeughalter mit Radialverstellvorrichtung fuer ein Werkzeug,insbesondere ein Ausdrehwerkzeug
EP2097199B1 (fr) Dispositif pendulaire et procédé associé
EP0934140A1 (fr) Cle a tube
DE2236828C2 (de) Bohr- oder Ausdrehkopf
EP1262266A1 (fr) Dispositif de fixation
DE69215905T2 (de) Spannvorrichtung für fräser oder ähnliche, anpassbar für verschiedene haltergrössen
DE102019111843B4 (de) Zerspanungswerkzeug
DE3704764A1 (de) Einrichtung zum einstellen einer drehmomentbegrenzung an einem schraubendreher
DE102013206573A1 (de) Stepper
DE8519793U1 (de) Werkzeugwechselvorrichtung für eine Werkzeugmaschine
DE2134781A1 (de) Setzwerkzeug zum eintreiben einer gewindestange
DE19610213A1 (de) Spannfutter mit Bogenstück
DE3443636A1 (de) Bohrwerkzeug fuer hammer- oder schlagbohrmaschinen
DE3026513A1 (de) Aufbohrwerkzeug, insbes. plansenker

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 BE CH DE DK ES FR GB IT LI NL 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 BE CH DE DK ES FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19930301

17Q First examination report despatched

Effective date: 19940601

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

ITF It: translation for a ep patent filed
AK Designated contracting states

Kind code of ref document: B1

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

REF Corresponds to:

Ref document number: 132066

Country of ref document: AT

Date of ref document: 19960115

Kind code of ref document: T

REF Corresponds to:

Ref document number: 59107142

Country of ref document: DE

Date of ref document: 19960208

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2080935

Country of ref document: ES

Kind code of ref document: T3

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

Effective date: 19960217

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

ET Fr: translation filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19960831

Ref country code: CH

Effective date: 19960831

Ref country code: BE

Effective date: 19960831

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
BERE Be: lapsed

Owner name: HILTI A.G.

Effective date: 19960831

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

Ref country code: NL

Effective date: 19970301

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: FR

Effective date: 19970430

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

Effective date: 19970301

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

Ref country code: SE

Payment date: 19970623

Year of fee payment: 7

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

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

Ref country code: AT

Payment date: 19970710

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: 19970804

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: 19970821

Year of fee payment: 7

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

Ref country code: DK

Payment date: 19970828

Year of fee payment: 7

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 NON-PAYMENT OF DUE FEES

Effective date: 19980813

Ref country code: DK

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

Effective date: 19980813

Ref country code: AT

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

Effective date: 19980813

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

Ref country code: SE

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

Effective date: 19980814

Ref country code: ES

Free format text: LAPSE BECAUSE OF THE APPLICANT RENOUNCES

Effective date: 19980814

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

Effective date: 19980813

EUG Se: european patent has lapsed

Ref document number: 91810638.6

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

Ref country code: DE

Payment date: 19990609

Year of fee payment: 9

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20001009

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: 20010501

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;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050813