EP0771934A2 - Accouplement pour tiges de forage à percussion - Google Patents

Accouplement pour tiges de forage à percussion Download PDF

Info

Publication number
EP0771934A2
EP0771934A2 EP96116533A EP96116533A EP0771934A2 EP 0771934 A2 EP0771934 A2 EP 0771934A2 EP 96116533 A EP96116533 A EP 96116533A EP 96116533 A EP96116533 A EP 96116533A EP 0771934 A2 EP0771934 A2 EP 0771934A2
Authority
EP
European Patent Office
Prior art keywords
thread
threaded
drill
drilling tool
axially parallel
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
EP96116533A
Other languages
German (de)
English (en)
Other versions
EP0771934A3 (fr
EP0771934B1 (fr
Inventor
Hans-Peter Dr. Meyen
Bernhard Moser
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.)
Robert Bosch Power Tools GmbH
Original Assignee
Hawera Probst 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 Hawera Probst GmbH filed Critical Hawera Probst GmbH
Publication of EP0771934A2 publication Critical patent/EP0771934A2/fr
Publication of EP0771934A3 publication Critical patent/EP0771934A3/fr
Application granted granted Critical
Publication of EP0771934B1 publication Critical patent/EP0771934B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/042—Threaded
    • E21B17/0426—Threaded with a threaded cylindrical portion, e.g. for percussion rods

Definitions

  • the invention relates to a drilling tool, in particular for a rotational impact for processing rock or the like according to the preamble of claim 1.
  • connection thread must be optimized depending on the application. Common thread types such as metric thread, trapezoidal thread, saw thread or even round thread are suitable for this. Each thread type has its specific properties and advantages. Round threads are used in particular where there is a high risk of contamination and damage. This can certainly be the case in the rough everyday operation of such drilling tools. According to the figure 3 of the aforementioned US Pat. No. 4,262,762, a conventional round thread is also used in such a drilling tool.
  • the invention has for its object to propose a rock drilling tool for a particularly striking load, the threaded connection has been optimized in particular between the drill head and drill shank compared to the prior art, so that considerable advantages are achieved.
  • the basic idea of the invention is that the use of a modified round thread and thus a special thread is generally advantageous in order to be able to handle the contamination, corrosion loads or the like that occur.
  • a disadvantage of a kind of round thread connection are the transmission losses generally associated with this. These losses are higher the higher the impact energy to be transmitted is converted into frictional heat and sound energy. The frictional heat arises especially in those contact sections that have a steep lead angle. This means that there is a high efficiency of the transmission of the impact energy with the smallest possible pitch angle, that is to say the impact surface is as flat as possible. Losses due to sound energy are caused by excessive play and the associated impact of the parts on each other.
  • the invention provides that a modified round thread or a special thread is used in which in the area of the wave crests and / or the troughs of such a thread, axially parallel thread sections are provided, through which a round thread is straightened axially parallel in these sections. Sections parallel to the axis cannot absorb axial forces, so that there is no jamming in these threaded areas and thus excessive wear with a corresponding heating of these threaded sections.
  • the coordinated threaded sections of the external thread of the threaded pin and the internal thread of the threaded bore are designed in such a way that they nestle on the side of each threaded groove facing away from the force direction over a high surface section similar to a trapezoidal thread and form a continuous curve, while the wave crests and Wave troughs in particular can also be used for correct axial guidance and not for axial force transmission due to their respective lateral flattening.
  • a play can also be provided between the respective thread pairing. This results in an optimal one Relationship between power transmission and durability of the system.
  • the formation of the threaded connection is particularly advantageous in that, in particular, the shaft belly of the threaded pin has an axially parallel thread section which, like the alternative or supplementary axially parallel section in the trough of the threaded pin, comprises a length range which is approximately 1/5 to 1/4 of the pitch of the Thread is.
  • the associated internal thread in the threaded bore is a mirror image, that is, the radially outer, axially parallel section on the shaft crest of the threaded pin corresponds to an associated radially outer, axially parallel section in the trough of the internal thread.
  • the design of the drilling tool according to the invention is particularly advantageous in that the drill head generally has an attached threaded pin with an external thread and the adjoining drill shaft has an associated bore with an internal thread.
  • Such an arrangement has the advantage that the drill head is not weakened by an additional hole for receiving an internal thread, so that, for example in the embodiment of the invention as a drill bit, this area can be used excellently for receiving an inner hole for a center drill.
  • connection between the drill head and the drill shank additionally receives a high degree of force transmission of the impacting energy via a circumferential collar via a corresponding modified round thread according to the invention.
  • the circumferential collar arranged between the bore for the internal thread and the outer diameter of the shaft part with its circular ring surface is supported over a large area on an opposite corresponding one Collar on the drill head in order to transmit the axial impact energy to a large extent from the drill shaft on the drill head.
  • the modified round thread is relieved of energy transmission and is also used to a large extent for axial guidance between the drill shank and drill head.
  • FIG. 1 shows a two-part drilling tool 1, for example with a drill head 2 in FIG. 1b and, for example, a drill shaft 3 in FIG. 1a.
  • the drill head 2 can comprise any other type of drill head and in particular a drill head as described in all of the prior art documents mentioned at the beginning.
  • 1b indicates, for example, the use of a drill bit as the drill head.
  • the drill shaft 3 can be any boring bar or the like with or without an integrated one Include conveying helix, wherein a separate attachable conveying helix could also be used, for example, with a cross boring head.
  • the drill head 2 has a cup-shaped drill bit 4, the drill bit shaft 5 of which is designed as a threaded pin or threaded bolt 6.
  • the drill shaft 3 has an internal thread 7 which is designed as a threaded nut 7 and which interacts with the threaded pin 6.
  • the threaded pin 6 and the threaded nut 7 have a modified round thread 8, 8 '- hereinafter also called “round thread” - with a thread pitch h and a thread depth t1.
  • FIG. 1a also shows the borehole depth L1 and an axial inlet section L2.
  • Fig. 1b shows an entire pin length l1, a thread length l2 and a thread run-out length l3.
  • the round thread 7 shown in FIG. 1a has a radius of curvature R1. Furthermore, the lower inlet angle ⁇ 1 for the round thread and the upper cone angle ⁇ 2 for the cone tip are shown.
  • the collar 10 corresponding to the collar 9 of the drill head 2 on the end face of the drill shaft 3 has corresponding dimensions.
  • variables specified above are compiled as examples.
  • the peculiarity of the modified round thread of the threaded pin 6 and / or the threaded nut 7 is that axially parallel sections are provided in the wave crests and / or in the troughs of the round thread as shown in FIGS. 1 and 2.
  • the threaded pin 6 has on its round thread 8 radially outer wave crests 11 and radially inner wave troughs 12.
  • the internal thread 8 'of the threaded nut 7 has radially inwardly projecting wave crests 11' and radially outwardly directed wave troughs 12 '.
  • the wave crests 11 each have axially parallel linear sections, that is to say the radially outer region of the round thread 8 of the threaded pin 6 is flattened and arranged parallel to the longitudinal axis of symmetry 13.
  • This axially parallel section is designated in FIG. 1b, FIG. 2 with reference number 14 with a width s1.
  • the radially inward wave crest 11 'of the round thread 8' there also has an axially parallel section 15 with the width s2.
  • the shaft crest 11 of the round thread 8 of the threaded pin 6 therefore interacts with its axially parallel section 14 with a corresponding axially parallel section 15 'in the trough 12' of the round thread 8 'of the threaded nut 7, with a continuous curve such as one in the remaining area of the thread, for example usual round thread may be present. Furthermore can however, also an axially parallel section 15 of the radially inwardly pointing crest 11 'of the threaded nut 7 cooperate with a corresponding axially parallel section 14' in the trough 12 of the threaded pin 6.
  • the threaded nut 7 with its round thread 8 ′ lies closely and positively on the almost identical cam section 18 of the threaded pin 6, in particular on the curve area 18 ′ remote from the force P over an axial height area s3 at. In this area 18, 18 'with a continuous curve, the force transmission takes place during the impact load.
  • the curve area 19 of the threaded pin 6 lying below the axis-parallel section 14 and the associated curve section 19 'of the threaded nut 7 can have a cavity 20 or gap 20, that is to say no force transmission takes place in this area. The same applies to the curve area above the axially parallel section 15 of the threaded nut 7.
  • the power transmission and, in particular, optimal guidance between the drill head 2 and drill shank 3 therefore take place over the round thread 8, 8 'with axially parallel surface sections 14, 14', 15, 15 'on the respective wave crests 11, 11' or the wave troughs 12, 12 ', or over the rest of the curve 18, 18' and 19, 19 ' of the modified round thread, which is formed continuously or continuously.
  • the length L1 has a dimension which corresponds approximately to 1 to 1.3 times the outer diameter d A of the drill bit 4.
  • the difference between the nominal diameter d N and the core diameter d K of the threaded pin 6 corresponds to approximately 10% of the core diameter.
  • the inlet zone or the inlet section 21 has a length L2 which corresponds to approximately 30% of the length L1. As a result of this measure, the area in which the radius R2 lies at the transition from the threaded pin 6 to the drill bit 4 is not unnecessarily braced when the threads are joined.
  • the two round threads 8, 8 ' are designed in accordance with conventional round threads, the flank radius R1, r1 in the respective thread being approximately 0.1 to 0.15 times the respective nominal diameter D N or d N corresponds.
  • the respective cylindrical section 14, 15 on the wave crests 11, 11 ' has an axial length s1, s2 which corresponds to 0.1 to 0.4 times the pitch h.
  • the round thread is therefore a continuous curve.
  • the invention is not restricted to the exemplary embodiment shown and described. Rather, it also encompasses all professional further training within the framework of intellectual property rights claims.
  • the axially parallel sections 14, 15 are carried out directly next to one another, that is to say the axially parallel section 14 on the wave crest 11 interacts with an axially parallel section 15 'arranged in the trough 12 in FIG is indicated.
  • an optimal axially parallel guidance of the threaded parts to one another is achieved.
  • such arrangements can only be arranged on the shaft crests 11 and / or only in the troughs 12 of the threaded pin 6, with associated sections in the threaded nut 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
EP96116533A 1995-11-04 1996-10-16 Accouplement pour tiges de forage à percussion Expired - Lifetime EP0771934B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19541163 1995-11-04
DE19541163A DE19541163A1 (de) 1995-11-04 1995-11-04 Bohrwerkzeug, insbesondere zur Bearbeitung von Gestein

Publications (3)

Publication Number Publication Date
EP0771934A2 true EP0771934A2 (fr) 1997-05-07
EP0771934A3 EP0771934A3 (fr) 1998-06-17
EP0771934B1 EP0771934B1 (fr) 2003-04-23

Family

ID=7776639

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96116533A Expired - Lifetime EP0771934B1 (fr) 1995-11-04 1996-10-16 Accouplement pour tiges de forage à percussion

Country Status (2)

Country Link
EP (1) EP0771934B1 (fr)
DE (2) DE19541163A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002044512A1 (fr) * 2000-11-30 2002-06-06 Sandvik Ab; (Publ) Joint filete destine a une perforation a percussion et ses pieces
WO2004074624A1 (fr) * 2003-02-24 2004-09-02 Sandvik Intellectual Property Ab Outil
US7329073B2 (en) * 2004-09-23 2008-02-12 Seco Tools Ab Cutting tool and tool head
CN102493515A (zh) * 2011-12-15 2012-06-13 湖南科技大学 一种液压破碎锤钎杆结构及其合金钎头的镶嵌方法
AT13405U1 (de) * 2012-01-20 2013-12-15 Ceratizit Austria Gmbh Hartwerkstoff-gewindeverbindung
WO2014026975A1 (fr) * 2012-08-17 2014-02-20 Franz Haimer Maschinenbau Kg Ensemble outil
US9643262B2 (en) 2013-07-25 2017-05-09 Kennametal Inc. Coupling mechanism for cutting tool
US9643264B2 (en) 2013-07-25 2017-05-09 Kennametal Inc. Coupling mechanism for cutting tool
EP4650560A1 (fr) * 2024-05-15 2025-11-19 Sandvik Mining and Construction Tools AB Profil de filetage à racines inclinées

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT509643B1 (de) 2010-04-07 2013-08-15 Dywidag Systems Int Gmbh Zweiteiliges bohrwerkzeug zum schlag- oder drehschlagbohren von löchern in boden- oder gesteinsmaterial
US9889509B2 (en) 2014-05-05 2018-02-13 Kennametal Inc. Cutter heads with improved coupling

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1876565A (en) * 1932-09-13 of canton
US1477855A (en) * 1922-04-18 1923-12-18 Fred W Thurston Drill
US1943879A (en) * 1930-04-08 1934-01-16 Detachable Bit Corp Of America Drill
US2052011A (en) * 1934-08-06 1936-08-25 Timken Roller Bearing Co Separable drill bit
US2772899A (en) * 1948-05-15 1956-12-04 Hughes Tool Co Threaded oil well drill stem connection with the threads having included crest angleof 90 degrees
US3492101A (en) * 1967-05-10 1970-01-27 Chromalloy American Corp Work-hardenable refractory carbide tool steels
NO134763C (fr) * 1971-01-07 1976-12-08 Sandvik Ab
US3876319A (en) * 1973-03-23 1975-04-08 Skil Corp Fastening means for two-piece core bit
US4040756A (en) * 1976-03-05 1977-08-09 Trw Canada Limited Drill rod thread form
US4332502A (en) * 1977-01-11 1982-06-01 Padley & Venables Limited Apparatus for use in drilling
DE3330025A1 (de) * 1982-08-30 1984-03-01 Ingersoll-Rand Co., 07675 Woodcliff Lake, N.J. Zweistueckiger bohrer
SE459681B (sv) * 1985-01-07 1989-07-24 Santrade Ltd Borrelement foer slagborrning
SE469602B (sv) * 1985-04-04 1993-08-02 Sandvik Ab Skarvgaenga foer slagborrning
DE3513347C1 (en) * 1985-04-13 1987-01-02 Karl Burgsmueller Conical, multi-start threaded connection for fastening parts of a deep-drilling tool
DE8521577U1 (de) * 1985-07-26 1986-04-17 Lindhorst, Jürgen, 2000 Hamburg Kronenbohrwerkzeug zum vorzugsweisen Bohren in Gestein, Mauerwerk od. dgl.
SE460301B (sv) * 1986-10-15 1989-09-25 Sandvik Ab Skarvstaang foer slaaende bergborrmaskin
US4799844A (en) * 1988-01-11 1989-01-24 Trw Inc Elliptical thread design
DE3910627A1 (de) * 1989-04-01 1990-10-04 Ischebeck Friedrich Gmbh Verbindungselement
DE4220636B4 (de) * 1992-06-24 2004-07-08 Friedr. Ischebeck Gmbh Verbindungselement, insbesondere Kupplungsmuffe, für eine Schraubverbindung von Injektionsankerstangen von Injektionsankern
DE4314868C2 (de) * 1993-05-05 2002-05-16 Hawera Probst Kg Hartmetall Bohrwerkzeug
SE505068C2 (sv) * 1995-03-27 1997-06-23 Sandvik Ab Förfarande för att överföra slagenergi från ett slagborrverktyg till ett borrhål, bergborrverktyg och borrkrona för slående borrning

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002044512A1 (fr) * 2000-11-30 2002-06-06 Sandvik Ab; (Publ) Joint filete destine a une perforation a percussion et ses pieces
WO2004074624A1 (fr) * 2003-02-24 2004-09-02 Sandvik Intellectual Property Ab Outil
US7329073B2 (en) * 2004-09-23 2008-02-12 Seco Tools Ab Cutting tool and tool head
CN102493515A (zh) * 2011-12-15 2012-06-13 湖南科技大学 一种液压破碎锤钎杆结构及其合金钎头的镶嵌方法
CN102493515B (zh) * 2011-12-15 2014-09-03 湖南科技大学 一种液压破碎锤钎杆结构及其合金钎头的镶嵌方法
AT13405U1 (de) * 2012-01-20 2013-12-15 Ceratizit Austria Gmbh Hartwerkstoff-gewindeverbindung
US9770766B2 (en) 2012-01-20 2017-09-26 Ceratizit Austria Gesellschaft M.B.H. Hard-material threaded connection
EP3045243A1 (fr) * 2012-08-17 2016-07-20 Franz Haimer Maschinenbau KG Système d'outil
CN104582882A (zh) * 2012-08-17 2015-04-29 弗兰茨海莫机械制造两合公司 刀具布置结构
WO2014026975A1 (fr) * 2012-08-17 2014-02-20 Franz Haimer Maschinenbau Kg Ensemble outil
US9815122B2 (en) 2012-08-17 2017-11-14 Franz Haimer Maschinenbau Kg Tool arrangement
EP4464442A3 (fr) * 2012-08-17 2024-12-11 Franz Haimer Maschinenbau KG Ensemble outil
US9643262B2 (en) 2013-07-25 2017-05-09 Kennametal Inc. Coupling mechanism for cutting tool
US9643264B2 (en) 2013-07-25 2017-05-09 Kennametal Inc. Coupling mechanism for cutting tool
EP4650560A1 (fr) * 2024-05-15 2025-11-19 Sandvik Mining and Construction Tools AB Profil de filetage à racines inclinées
WO2025238069A1 (fr) * 2024-05-15 2025-11-20 Sandvik Mining And Construction Tools Ab Profil de filetage à fond de filet incliné

Also Published As

Publication number Publication date
DE19541163A1 (de) 1997-05-07
EP0771934A3 (fr) 1998-06-17
EP0771934B1 (fr) 2003-04-23
DE59610370D1 (de) 2003-05-28

Similar Documents

Publication Publication Date Title
AT392669B (de) Gewindeanordnung zum verbinden von zwei elementen in einem schlagbohrgestaenge
DE2800887C2 (de) Einrichtung zum Schlagen, Schlagbohren oder Drehschlagbohren
DE60012216T2 (de) Schraubverbindung
EP1174225A1 (fr) Outill de percussion
EP0790877B1 (fr) Outil de percage
EP0691484B1 (fr) Accouplement pour tiges de forage avec transmission de force sur une couronne de sondage diamantée
DE69917475T2 (de) Schraubenverbindung eines bohrstrangs zum schlagbohren
DE3310146C2 (de) Bohrfutter für Schlagbohrbetrieb
EP0685629A2 (fr) Trépan de forage de roche
EP0283698B1 (fr) Outil de perçage à refroidissement interne avec rainures hélicoidales et une queue de serrage
DE202010017983U1 (de) Bohrmeisselanordnung für fluidbetriebene Schlagbohrwerkzeuge
DE69103090T2 (de) Schraubengewindekonstruktion.
DE69524621T2 (de) Gesteinsbohrer sowie schneideinsätze
EP0771934B1 (fr) Accouplement pour tiges de forage à percussion
EP1314506B1 (fr) Outil de taraudage
EP0707129A2 (fr) Outil de forage avec support et éléments de coupe
DE2429146A1 (de) Schlagbohrgestaenge
DE102014207502A1 (de) Rotationswerkzeug sowie Werkzeugkopf
EP1117897B1 (fr) Train de sonde pour realiser un forage par rotation-percussion, notamment pour forage a tubage de sonde simultane
EP0595214B1 (fr) Foret à roche
DE19803304C2 (de) Bohrgestänge zum Drehschlagbohren, insbesondere zum Überlagerungsbohren
EP1015727B1 (fr) Outil de percage
AT391346B (de) Verfahren zur herstellung von pumpenstangen
DE69622311T2 (de) Schneidelement mit einer Oberfläche aus superhartem Werkstoff
EP0928668A2 (fr) Accouplement pour une machine à percer par percussion

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): CH DE FR GB IT LI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): CH DE FR GB IT LI

17P Request for examination filed

Effective date: 19981030

17Q First examination report despatched

Effective date: 20010801

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): CH DE FR GB IT LI

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;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: 20030423

Ref country code: GB

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: 20030423

Ref country code: FR

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

Effective date: 20030423

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

REF Corresponds to:

Ref document number: 59610370

Country of ref document: DE

Date of ref document: 20030528

Kind code of ref document: P

GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 20030423

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

Ref country code: LI

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

Effective date: 20031031

Ref country code: CH

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

Effective date: 20031031

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

Effective date: 20040126

EN Fr: translation not filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: DE

Payment date: 20131217

Year of fee payment: 18

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 59610370

Country of ref document: DE

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: 20150501