EP0340340A1 - Method for the production of a diamond-core bit - Google Patents

Method for the production of a diamond-core bit Download PDF

Info

Publication number
EP0340340A1
EP0340340A1 EP88119262A EP88119262A EP0340340A1 EP 0340340 A1 EP0340340 A1 EP 0340340A1 EP 88119262 A EP88119262 A EP 88119262A EP 88119262 A EP88119262 A EP 88119262A EP 0340340 A1 EP0340340 A1 EP 0340340A1
Authority
EP
European Patent Office
Prior art keywords
face
tube
cutting segments
wall thickness
diamond
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
EP88119262A
Other languages
German (de)
French (fr)
Other versions
EP0340340B1 (en
Inventor
Wolfgang Meier
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT88119262T priority Critical patent/ATE91749T1/en
Publication of EP0340340A1 publication Critical patent/EP0340340A1/en
Application granted granted Critical
Publication of EP0340340B1 publication Critical patent/EP0340340B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D65/00—Making tools for sawing machines or sawing devices for use in cutting any kind of material
    • 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
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/48—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of core type

Definitions

  • the invention relates to a method for producing and / or refitting a diamond core drill in the form of a tube, the end face of which has a greater wall thickness than the rest of the tube wall in order to carry cutting segments on the annular end face.
  • the object of the invention is to improve a method for producing and / or refitting a diamond core drill of the type mentioned at the outset in such a way that the drill can very often be provided with cutting segments again and again in a simple and inexpensive manner.
  • this object is achieved in that the greater wall thickness in the end region of the tube is achieved by upsetting, in particular in a rolling process.
  • the tube on the cutting end face may have a smaller wall thickness than is required for the segments, since after a slight smooth turning or milling the end face, it is swaged up again until it has a sufficient wall thickness for which has cutting segments.
  • the tube can thus have a constant small wall thickness over its entire length and only needs to be swaged up at the cutting end until the width of the end face is large enough for fastening the cutting segments. This means that, after the respective cutting segment set has worn out, only a very small pipe length is used in order to obtain a sufficiently wide end face again.
  • Such a method is relatively inexpensive and labor intensive.
  • the metal is solidified on the cutting face by the upsetting, so that a particularly secure hold is given.
  • At least one roller runs under pressure on the tube end face until the wall thickness required for the cutting segments is reached. It is also preferably proposed that the existing used cutting segments be removed from the pipe end face as far as possible and that the pipe end face is turned or milled off by a small length for new equipping with cutting segments, and that the pipe end face is then swaged up.
  • the tube 1 of a diamond core drill is thickened 1a at the free cutting end, so that the annular end face 3 has a greater thickness than the rest of the tube wall. Diamond cutting segments 2 are soldered onto this end face 3.
  • the pipe end is swaged up cold-deforming by rolling.
  • at least one roller is placed radially to the tube against the end face 3 and pressed onto the end face in a rolling manner, as a result of which the tube material, in particular the steel, is cold-deformed in the region 1a.
  • the axis of the deforming roller is arranged so that it intersects the tube axis 7.
  • the deforming roller can have a cylindrical or else a spherical or pointed roller jacket in order to accelerate the deformation.
  • the tube end face only has to be turned or milled by a few millimeters, after which the tube end face is then swaged up.
  • this forms a clearance angle 5 on both the inside and outside diameters 4, 6, so that the end face 3 protrudes from the tube wall both on the inside and on the outside. So that is ensures that the pipe wall is not exposed to wear in the not or little widened area.

Abstract

The invention relates to a method for the production and/or the re-tipping of a diamond-core bit in a tubular form, the end face 3 of which has a greater wall thickness than the rest of the tubular wall in order to carry cutting segments 2 on the annular end face 3, the greater wall thickness in the tubular end area 3, 4 being obtained by upsetting, in particular in a rolling process. <IMAGE>

Description

Die Erfindung betrifft ein Verfahren zum Herstellen und/oder Neubestücken eines Diamant-Kernbohrers in Rohrform, dessen Stirnseite eine größere Wanddicke aufweist als die übrige Rohrwand, um auf der ringförmigen Stirnseite Schneidsegmente zu tragen.The invention relates to a method for producing and / or refitting a diamond core drill in the form of a tube, the end face of which has a greater wall thickness than the rest of the tube wall in order to carry cutting segments on the annular end face.

Aus der schweizerischen Patentschrift 185076 und der britischen Patentschrift 601428 ist es bekannt das die Schneidsegmente tragende Ende eines Diamant-Kernbohrers mit verstärkter Wandung auszuführen, damit die Schneidsegmente genügend Halt finden. Nach dem Verschleiß der Schneidsegmente ist auch ein erheblicher Bereich der verdickten Wandung mit verschlissen, so daß eine erhebliche Länge des Kernbohrers im verdickten Bereich heruntergedreht werden muß ehe neue Segmente aufgesetzt werden können. Der Kernbohrer hat damit eine nur sehr kurze Lebensdauer.From the Swiss patent 185076 and the British patent 601428 it is known to design the end of a diamond core drill carrying the cutting segments with a reinforced wall so that the cutting segments find sufficient support. After the cutting segments have worn out, a considerable area of the thickened wall is also worn, so that a considerable length of the core drill in the thickened area must be turned down before new segments can be put on. The core drill thus has a very short lifespan.

Aufgabe der Erfindung ist es, ein Verfahren zum Herstellen und/oder Neubestücken eines Diamant-Kernbohrers der eingangs genannten Art so zu verbessern, daß der Bohrer auf einfache und preiswerte Weise sehr häufig immer wieder mit Schneidsegmenten versehen werden kann.The object of the invention is to improve a method for producing and / or refitting a diamond core drill of the type mentioned at the outset in such a way that the drill can very often be provided with cutting segments again and again in a simple and inexpensive manner.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die größere Wanddicke im Rohr-Stirnbereich durch ein Aufstauchen, insbesondere in einem Rollverfahren erfolgt.According to the invention, this object is achieved in that the greater wall thickness in the end region of the tube is achieved by upsetting, in particular in a rolling process.

Bei diesem Verfahren kann nach dem Verschleiß der Schneidsegmente das Rohr auf der schneidenden Stirnseite aufgrund des Verschleisses eine geringere Wanddicke aufweisen als für die Segmente erforderlich ist, da nach einem geringfügigen Glattdrehen oder Glattfräsen der Stirnseite, diese wieder aufgestaucht wird, bis sie eine genügende Wanddicke für die Schneidsegmente besitzt. Das Rohr kann damit über seine gesamte Länge eine gleichbleibende geringe Wanddicke aufweisen und braucht nur an dem schneidenden Ende soweit aufgestaucht zu werden, bis die Breite der Stirnfläche für ein Befestigen der Schneidsegmente groß genug ist. Damit wird nach dem Verschleiß des jeweiligen Schneidsegmentsatzes nur sehr wenig Rohrlänge verbraucht um wieder eine genügend breite Stirnfläche zu erhalten. Ein solches Verfahren ist verhältnismäßig wenig arbeitsaufwendig und preiswert. Darüberhinaus wird durch das Aufstauchen das Metall an der schneidenden Stirnseite verfestigt, so daß ein besonders sicherer Halt gegeben ist.In this method, after the cutting segments have worn, the tube on the cutting end face may have a smaller wall thickness than is required for the segments, since after a slight smooth turning or milling the end face, it is swaged up again until it has a sufficient wall thickness for which has cutting segments. The tube can thus have a constant small wall thickness over its entire length and only needs to be swaged up at the cutting end until the width of the end face is large enough for fastening the cutting segments. This means that, after the respective cutting segment set has worn out, only a very small pipe length is used in order to obtain a sufficiently wide end face again. Such a method is relatively inexpensive and labor intensive. In addition, the metal is solidified on the cutting face by the upsetting, so that a particularly secure hold is given.

Besonders vorteilhaft ist es, wenn auf der Rohrstirnseite mindestens eine Rolle unter Druck abläuft bis die für die Schneidsegmente erforderliche Wanddicke erreicht ist. Auch wird vorzugsweise vorgeschlagen, daß zum Neubestücken mit Schneidsegmenten die bisherigen verbrauchten Schneidsegmente von der Rohrstirnseite soweit vorhanden entfernt werden und die Rohrstirnseite um eine geringe Länge abgedreht oder abgefräst wird, und daß danach die Rohrstirnseite aufgestaucht wird.It is particularly advantageous if at least one roller runs under pressure on the tube end face until the wall thickness required for the cutting segments is reached. It is also preferably proposed that the existing used cutting segments be removed from the pipe end face as far as possible and that the pipe end face is turned or milled off by a small length for new equipping with cutting segments, and that the pipe end face is then swaged up.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben.An embodiment of the invention is shown in the drawing and will be described in more detail below.

Es zeigen

  • Figur 1 einen Längsschnitt durch das Rohr,
  • Figur 2 eine Stirnansicht und
  • Figur 3 einen Ausschnitt aus Figur 1 in vergrößertem Maßstab.
Show it
  • FIG. 1 shows a longitudinal section through the tube,
  • Figure 2 is an end view
  • Figure 3 shows a detail of Figure 1 on an enlarged scale.

Das Rohr 1 eines Diamant-Kernbohrers ist am freien schneidenden Ende verdickt 1a ausgeführt, so daß die ringförmige Stirnseite 3 eine größere Dicke aufweist als die übrige Rohrwandung. Auf dieser Stirnseite 3 sind Diamant-Schneidsegmente 2 aufgelötet.The tube 1 of a diamond core drill is thickened 1a at the free cutting end, so that the annular end face 3 has a greater thickness than the rest of the tube wall. Diamond cutting segments 2 are soldered onto this end face 3.

Ehe die Schneidsegmente 2 befestigt werden, wird das Rohrende durch Rollen kalt verformend aufgestaucht. Hierzu wird mindestens eine Rolle radial zum Rohr gegen die Stirnseite 3 gestellt und auf die Stirnseite rollend gedrückt, wodurch das Rohrmaterial insbesondere der Stahl im Bereich 1a kalt verformt wird. Die Achse der verformenden Rolle ist dabei so angeordnet, daß sie die Rohrachse 7 schneidet. Die verformende Rolle kann einen zylindrischen oder aber auch einen balligen oder spitzen Rollenmantel besitzen, um die Verformung zu beschleunigen.Before the cutting segments 2 are fastened, the pipe end is swaged up cold-deforming by rolling. For this purpose, at least one roller is placed radially to the tube against the end face 3 and pressed onto the end face in a rolling manner, as a result of which the tube material, in particular the steel, is cold-deformed in the region 1a. The axis of the deforming roller is arranged so that it intersects the tube axis 7. The deforming roller can have a cylindrical or else a spherical or pointed roller jacket in order to accelerate the deformation.

Soll ein Bohrer mit Schneidsegmenten neubestückt werden, so muß nach Abnahme der restlichen verbrauchten Schneidsegmente die Rohrstirnseite nur um wenige Milimeter abgedreht oder abgefräst werden, wonach dann die Rohrstirnseite aufgestaucht wird.If a drill is to be re-equipped with cutting segments, then after removing the remaining used cutting segments, the tube end face only has to be turned or milled by a few millimeters, after which the tube end face is then swaged up.

Im aufgestauchten Bereich 1a bildet dieser sowohl am Innen- als auch Außendurchmesser 4, 6 einen Freiwinkel 5, so daß die Stirnseite 3 sowohl an der Innenseite als auch an der Außenseite gegenüber der Rohrwandung vorsteht. Damit ist sichergestellt, daß die Rohrwandung im nicht oder wenig verbreiterten Bereich einem Verschleiß nicht ausgesetzt ist.In the upset area 1a, this forms a clearance angle 5 on both the inside and outside diameters 4, 6, so that the end face 3 protrudes from the tube wall both on the inside and on the outside. So that is ensures that the pipe wall is not exposed to wear in the not or little widened area.

Claims (3)

1. Verfahren zum Herstellen und/oder Neubestücken eines Diamant-Kernbohrers in Rohrform, dessen Stirnseite (3) eine größere Wanddicke aufweist als die übrige Rohrwand, um auf der ringförmigen Stirnseite (3) Schneidsegmente (2) zu tragen, dadurch gekennzeichnet, daß die größere Wanddicke im Rohr-Stirnbereich (3, 4) durch ein Aufstauchen, insbesondere in einem Rollverfahren erfolgt.1. A method for producing and / or re-equipping a diamond core drill in tube form, the end face (3) has a greater wall thickness than the rest of the tube wall to carry cutting segments (2) on the annular end face (3), characterized in that the greater wall thickness in the tube end region (3, 4) is achieved by upsetting, in particular in a rolling process. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß auf der Rohrstirnseite (3) mindestens eine Rolle unter Druck abläuft bis die für die Schneidsegmente (2) erforderliche Wanddicke erreicht ist.2. The method according to claim 1, characterized in that on the tube end face (3) at least one roller runs under pressure until the wall thickness required for the cutting segments (2) is reached. 3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß zum Neubestücken mit Schneidsegmenten (2) die bisherigen verbrauchten Schneidsegmente (2) von der Rohrstirnseite (3) soweit vorhanden entfernt werden und die Rohrstirnseite (3) um eine geringe Länge abgedreht oder abgefräst wird, und daß danach die Rohrstirnseite (3) aufgestaucht wird.3. The method according to claim 1 or 2, characterized in that the existing used cutting segments (2) from the pipe end face (3) as far as present are removed and the pipe end face (3) turned or milled by a small length for re-loading with cutting segments (2) and that the pipe end face (3) is then upset.
EP88119262A 1988-04-25 1988-11-19 Method for the production of a diamond-core bit Expired - Lifetime EP0340340B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88119262T ATE91749T1 (en) 1988-04-25 1988-11-19 PROCESS FOR MAKING A DIAMOND CORE DRILL.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8805449U 1988-04-25
DE8805449U DE8805449U1 (en) 1988-04-25 1988-04-25

Publications (2)

Publication Number Publication Date
EP0340340A1 true EP0340340A1 (en) 1989-11-08
EP0340340B1 EP0340340B1 (en) 1993-07-21

Family

ID=6823338

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88119262A Expired - Lifetime EP0340340B1 (en) 1988-04-25 1988-11-19 Method for the production of a diamond-core bit

Country Status (3)

Country Link
EP (1) EP0340340B1 (en)
AT (1) ATE91749T1 (en)
DE (2) DE8805449U1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0706870A1 (en) * 1994-10-15 1996-04-17 HILTI Aktiengesellschaft Tubular saw
WO2001064410A1 (en) * 2000-03-01 2001-09-07 'diamant Boart', Naamloze Vennootschap Tubular drill
EP1182324A2 (en) * 2000-08-25 2002-02-27 HILTI Aktiengesellschaft Diamond drill bit
CN109352837A (en) * 2018-10-25 2019-02-19 江苏锋泰工具有限公司 A kind of dry type TM tooth grooved bit

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1996181A (en) * 1930-11-01 1935-04-02 Justin F Wait Process of forming castings
CH185076A (en) * 1935-05-04 1936-07-15 Sauer Carl Core drill for masonry.
GB601428A (en) * 1945-06-18 1948-05-05 Wheel Trueing Tool Company Of Improvements in or relating to core bits
US2796777A (en) * 1953-05-06 1957-06-25 Stoll Albert Method and apparatus for resizing tools
DE2850015A1 (en) * 1977-11-18 1979-05-23 Lamage Ltd DIAMOND-EQUIPPED DRILL INSERT
GB1583860A (en) * 1976-08-20 1981-02-04 Moppes & Sons Ltd L Van Core drills
DE3742496A1 (en) * 1986-12-15 1988-06-16 Nippon Steel Corp METHOD FOR MACHINING THE END OF A STEEL PIPE BY DIVING AND PRESSING

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE199063C (en) *
US3306380A (en) * 1964-01-27 1967-02-28 Gen Automation Mfg Inc Core drill
US3802520A (en) * 1972-02-16 1974-04-09 L Whitman Combination masonry diamond bit and metal hole-cutting saw
US3981371A (en) * 1975-06-06 1976-09-21 Jamie Malcolm Wallis Core sampling drill
JPS57127535A (en) * 1981-01-29 1982-08-07 Kobe Steel Ltd Upset forging method
JPS58163542A (en) * 1982-03-23 1983-09-28 Sumitomo Metal Ind Ltd Upsetting method of tube
DE3408092A1 (en) * 1984-03-05 1985-09-19 Hilti Ag, Schaan HOLLOW DRILL
DE3512114A1 (en) * 1985-04-03 1986-10-09 Meissner, Joachim Hollow drill bit

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1996181A (en) * 1930-11-01 1935-04-02 Justin F Wait Process of forming castings
CH185076A (en) * 1935-05-04 1936-07-15 Sauer Carl Core drill for masonry.
GB601428A (en) * 1945-06-18 1948-05-05 Wheel Trueing Tool Company Of Improvements in or relating to core bits
US2796777A (en) * 1953-05-06 1957-06-25 Stoll Albert Method and apparatus for resizing tools
GB1583860A (en) * 1976-08-20 1981-02-04 Moppes & Sons Ltd L Van Core drills
DE2850015A1 (en) * 1977-11-18 1979-05-23 Lamage Ltd DIAMOND-EQUIPPED DRILL INSERT
DE3742496A1 (en) * 1986-12-15 1988-06-16 Nippon Steel Corp METHOD FOR MACHINING THE END OF A STEEL PIPE BY DIVING AND PRESSING

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0706870A1 (en) * 1994-10-15 1996-04-17 HILTI Aktiengesellschaft Tubular saw
US5569002A (en) * 1994-10-15 1996-10-29 Hilti Aktiengesellschaft Hollow annular drill bit with hollow cylindrical carrier member
CN1081116C (en) * 1994-10-15 2002-03-20 希尔蒂股份公司 Hollow boring bit with hollow cylinder support
WO2001064410A1 (en) * 2000-03-01 2001-09-07 'diamant Boart', Naamloze Vennootschap Tubular drill
BE1013336A3 (en) * 2000-03-01 2001-12-04 Diamant Boart Nv Tubular drill.
EP1182324A2 (en) * 2000-08-25 2002-02-27 HILTI Aktiengesellschaft Diamond drill bit
EP1182324A3 (en) * 2000-08-25 2002-04-03 HILTI Aktiengesellschaft Diamond drill bit
DE10041911B4 (en) * 2000-08-25 2009-02-05 Hilti Aktiengesellschaft diamond drill
CN109352837A (en) * 2018-10-25 2019-02-19 江苏锋泰工具有限公司 A kind of dry type TM tooth grooved bit
CN109352837B (en) * 2018-10-25 2021-02-12 江苏锋泰工具有限公司 Dry type TM tooth punching drill

Also Published As

Publication number Publication date
DE3882520D1 (en) 1993-08-26
DE8805449U1 (en) 1988-06-09
ATE91749T1 (en) 1993-08-15
EP0340340B1 (en) 1993-07-21

Similar Documents

Publication Publication Date Title
EP0187623B1 (en) Apparatus for cold-pressing a tapered thread
DE3510926C2 (en) Clamping device for mechanical clamping of fasteners
DE2723928C2 (en) Method for producing a bearing ring split at one point on its circumference
DE2032111A1 (en) Spacer ring for roller bearings and method for adjusting roller bearing arrangements
DE2552665B2 (en) A mandrel that can be rotated quickly around its axis for making a hole in a metal rat or the wall of a metal pipe
EP0243578A1 (en) Method of manufacturing a rolling bearing ring with a continuous split gap at at least one point of its periphery
DE2735762C2 (en) Finned tube and device for its manufacture
EP0340340A1 (en) Method for the production of a diamond-core bit
DE2757658A1 (en) DEVICE FOR MANUFACTURING EQUIVALENT SHAPED HALF SHELLS WHICH CAN BE WELDED TOGETHER TO PIPE ELBOWS BY DEFORMING FLAT METAL SHEETS
DE2738559A1 (en) PROCESS FOR PULLING PIPES WITH INTERNAL SUPPORT
EP0330003B2 (en) Screw extruder
AT411241B (en) DEVICE FOR LOCKING THE END OF MOVING PARTS
DE1273377B (en) Device for the rotatable attachment of a weapon turret
EP0924442B1 (en) Bearing bush and method of its production
DE3530343C2 (en)
DE3126805A1 (en) Rolling mill for manufacturing endless spirals
DE3314858A1 (en) Rock anchor
DE3201263C2 (en) Method and device for manufacturing a sealing ring assembly
DE3641895A1 (en) Method and device for bending hollow profiles, preferably manometer springs
DE3702831C1 (en) Guide of a roller straightening machine for strand-like straightening material
EP0445899A1 (en) Method for manufacture of medium- and thinwalled seamless pipes and rolling device therefor
DE3025868A1 (en) FLANGE CONNECTION
DE3844162A1 (en) Apparatus for rolling tubes by the cold pilger method
DE3105743A1 (en) Tubbing with self-locking connecting element for the lining of tunnels and shafts
EP1859874B1 (en) Float for manufacturing at least single-walled safety pipes, for use in particular as brake pipes, and method for manufacturing such a float

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 CH DE FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19900111

17Q First examination report despatched

Effective date: 19910416

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

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

REF Corresponds to:

Ref document number: 91749

Country of ref document: AT

Date of ref document: 19930815

Kind code of ref document: T

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

Effective date: 19930726

REF Corresponds to:

Ref document number: 3882520

Country of ref document: DE

Date of ref document: 19930826

ITF It: translation for a ep patent filed

Owner name: SOCIETA' ITALIANA BREVE

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

Ref country code: FR

Payment date: 19931104

Year of fee payment: 6

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

Ref country code: CH

Payment date: 19931108

Year of fee payment: 6

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

Ref country code: BE

Payment date: 19931110

Year of fee payment: 6

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

Ref country code: GB

Payment date: 19931111

Year of fee payment: 6

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

Ref country code: SE

Payment date: 19931112

Year of fee payment: 6

Ref country code: AT

Payment date: 19931112

Year of fee payment: 6

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

Ref country code: NL

Payment date: 19931130

Year of fee payment: 6

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

Ref country code: GB

Effective date: 19941119

Ref country code: AT

Effective date: 19941119

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

Ref country code: SE

Effective date: 19941120

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

Ref country code: LI

Effective date: 19941130

Ref country code: CH

Effective date: 19941130

Ref country code: BE

Effective date: 19941130

EAL Se: european patent in force in sweden

Ref document number: 88119262.9

BERE Be: lapsed

Owner name: MEIER WOLFGANG

Effective date: 19941130

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

Ref country code: NL

Effective date: 19950601

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19941119

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

Ref country code: FR

Effective date: 19950731

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

EUG Se: european patent has lapsed

Ref document number: 88119262.9

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: DE

Payment date: 20011214

Year of fee payment: 14

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: 20030603

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: 20051119