EP0548588B1 - Dispositif pour réaliser des forages dans le sol - Google Patents

Dispositif pour réaliser des forages dans le sol Download PDF

Info

Publication number
EP0548588B1
EP0548588B1 EP92120355A EP92120355A EP0548588B1 EP 0548588 B1 EP0548588 B1 EP 0548588B1 EP 92120355 A EP92120355 A EP 92120355A EP 92120355 A EP92120355 A EP 92120355A EP 0548588 B1 EP0548588 B1 EP 0548588B1
Authority
EP
European Patent Office
Prior art keywords
displacement head
jet nozzles
fluid jet
boring device
head
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP92120355A
Other languages
German (de)
English (en)
Other versions
EP0548588A1 (fr
Inventor
Gustav Dr. Ing. Jenne
Dietmar Dipl.-Ing. Jenne
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.)
Terra AG fuer Tiefbautechnik
Original Assignee
Terra AG fuer Tiefbautechnik
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 Terra AG fuer Tiefbautechnik filed Critical Terra AG fuer Tiefbautechnik
Publication of EP0548588A1 publication Critical patent/EP0548588A1/fr
Application granted granted Critical
Publication of EP0548588B1 publication Critical patent/EP0548588B1/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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
    • E21B7/205—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes without earth removal
    • E21B7/206—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes without earth removal using down-hole drives

Definitions

  • the invention relates to a device for producing earth bores with simultaneous pipe laying.
  • a conical displacement head is arranged in front of the pipes to be introduced, the maximum diameter of which is somewhat larger than the diameter of the pipe to be drawn in.
  • Such a displacement head produces the required borehole on the way of the earth displacement. The soil is not cleared, but is pushed radially outwards into the pores of the surrounding substrate.
  • a static thrust hydroaulic press or attachment weights
  • a dynamic one Ram drilling machine ramming hammer, quick-impact hammer
  • a compressed air or oil-powered dynamic ram boring machine whose outer diameter is slightly smaller than the inner diameter of the pipe to be inserted, with the displacement head, which is arranged in front of the pipes to be inserted, has a releasable, non-positive connection. This ensures that the ramming impacts are loss-free and can be implemented in a short distance to earth displacement, thereby creating a borehole into which the pipes can be easily inserted.
  • the non-positive connection between the displacement head and the drive unit is released and this is withdrawn within the pipe.
  • a dynamic ram boring machine or quick-action hammer this is usually done by switching to reverse running.
  • Another disadvantage is that the water permeability of the subsoil around the borehole is reduced, particularly in the case of well bores, since the displaced soil closes pores and thus channels through which the water is to flow to the well bore.
  • a method for producing cast concrete piles in the ground in which a pipe connected to a displacement head is driven into the ground, so that a cavity is created which can be poured out with concrete.
  • the conical displacement head is grooved on the outside and has spray nozzles through which a hydraulic fluid can be supplied.
  • the pipe should be pressed into the ground while turning it back and forth, the hydraulic fluid serving to loosen the ground. This procedure is intended to prevent the pipe from beating.
  • the invention has for its object to provide a device of the type mentioned, in which the displacement or tip resistance during the drilling process can be significantly reduced with technically simple means.
  • the liquid pressure can vary between approx. 10 - 300 bar depending on the type of soil.
  • a hydraulic fluid can be used that has thixotropic or lubricant properties.
  • additives in the drilling fluid e.g. Polymers that significantly reduce the friction between the pipe to be drawn in and the soil, so that greater lengths or depths are also possible.
  • the displacement head has additional liquid jet nozzles which are oriented at least approximately in the opposite direction to the drilling direction, since this loosens up the soil that has already been displaced and improves its water permeability.
  • a further improvement of this effect can be achieved in that further liquid jet nozzles are arranged on the displacement head, which are directed outwards perpendicularly to the longitudinal axis of the earth drilling device.
  • directional control of the earth boring device is possible in that the pressure fluid for each fluid jet nozzle is controlled individually with regard to pressure and / or quantity of the pressure fluid.
  • the degree of loosening of the soil in a certain angular range around the displacement head of the earth drilling machine can be carried out by the selection of the liquid jet nozzles acted upon by hydraulic fluid and / or the choice of pressure in such a way that a large or small change in direction of the earth drilling machine can be triggered by this loosening , since in the loosened soil the resistance opposed to the displacement head of the earth drilling rig is reduced and the displacement head of the earth drilling rig inevitably dodges to the side of the lower resistance.
  • the same effect can be achieved in that the respective jet angle of the liquid jet nozzles is adjustable.
  • the displacement head of the earth drilling device can be designed in a conventional manner.
  • the displacement head can have a conical shape and can have grooves distributed symmetrically with respect to the longitudinal axis over the cone surface, in which grooves the liquid jet nozzles are arranged.
  • the displacement head can also have a stepped shape and likewise have grooves distributed symmetrically with respect to the longitudinal axis, in which grooves the liquid jet nozzles are in turn arranged. Due to the arrangement of the liquid jet nozzles within the grooves, these are against wear and possible Destruction protected.
  • the stepped displacement head has better shattering properties because the stepped surfaces can exert a higher pressure.
  • the hydraulic fluid supply to the individual liquid jet nozzles is expediently arranged either in the housing wall of the drive device or between the housing edge and the pipe to be drawn in in parallel to the earth drilling device.
  • the ends of the channels for the hydraulic fluid supply, which are remote from the head, are connected to a hydraulic fluid source via flexible lines.
  • control valves for controlling the pressure fluid supply to the individual liquid jet nozzles can either be provided in the displacement head itself or on the pressure fluid source.
  • the latter embodiment has the advantage that the control lines for controlling the control valves are short and do not have to be pulled along with the earth drilling machine.
  • a transmitter can be provided in the displacement head, which emits the desired and suitable position signals.
  • Figure 1 is generally designated 10, an earth drilling device, which consists of a quick-action hammer 12 and a displacement head 14, with the help of which a tube or tunnel is to be created in the ground, in which a pipe 16 is drawn in simultaneously with the drilling process.
  • the displacement head 14 shown in FIG. 1 has a plurality of liquid jet nozzles 18 which are oriented approximately in the drilling direction and which serve to loosen the soil located in front of the displacement head 14.
  • the displacement head 14 shown in FIG. 1 has additional liquid jet nozzles 20 and further liquid jet nozzles 22 which are at least approximately opposite to the drilling direction or perpendicular to the longitudinal axis of the earth boring machine 10 are directed outwards.
  • a plurality of channels 26 are arranged axially parallel to the longitudinal axis of the earth boring device 10 between the housing of the quick-action hammer 12 and the inner wall of the drawn pipe 16. These channels 26 are connected at the far end to the head via flexible lines with the pressure fluid source, not shown.
  • control valves 28 which are indicated schematically in FIG. With these control valves 28, the amount and / or the pressure of the individual liquid jet nozzles 18, 20 and 22 supplied hydraulic fluid can be adjusted individually so as to ensure the above-described directional control of the earth boring device 10.
  • the compressed air supply for the quick-action hammer 12 takes place via the hose 30.
  • FIG. 2 shows a stepped displacement head 14 which has better shattering properties for use in hard and stony soil.
  • This displacement head 14 has grooves 24 arranged symmetrically to its longitudinal axis, in which here two liquid jet nozzles 18 are arranged one behind the other as an example, the radiation angle of which can be selected to be the same or different, so as to increase the possibility of control.
  • the liquid jet nozzles 18 can be connected in a groove 24 to a common or also to separate hydraulic fluid lines.
  • FIGS. 3 and 4 each show a liquid jet nozzle 18 which is designed in the form of a slotted screw which can be screwed into the respective nozzle opening and through which a nozzle channel 32 runs.
  • the nozzle channel 32 is axially directed, whereas in the embodiment according to FIG. 4 the nozzle channel 32 forms an angle with the screw axis.
  • the jet angle of the liquid jet nozzles 18 can be adjusted by screwing in liquid jet nozzles 18 with a differently designed nozzle channel 32.
  • the jet direction can also be changed by rotating the liquid jet nozzle 18.
  • a ram boring machine has been described as one embodiment. Both the loosening of the soil and the control by means of liquid jet nozzles arranged on the displacement head of a ram boring machine and by the hydraulic fluid escaping as a result can also be carried out with a static earth boring machine be used.
  • This earth drilling machine is not driven by ramming impacts from a quick-action hammer, but by the feed pressure introduced via a linkage. Otherwise, however, the statements made regarding the ram boring machine described above also apply in the same way to a static earth boring machine.
  • a transmitter 34 shown schematically in FIG. 1, can be arranged in the displacement head 14 of the earth drilling device 10, which transmitter 34 enables the position of the earth drilling device 10 to be determined correctly.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)

Claims (14)

  1. Dispositif pour l'exécution de forages dans le sol avec pose simultanée de tuyaux, en particulier pour l'exécution de forages de puits, comprenant un appareil de forage du sol (10) comportant un appareil de forage par battage dynamique (12) et une tête de déplacement (14) coaxiale avec celui-ci, caractérisé par le fait que le diamètre extérieur de la tête de déplacement (14) est supérieur au diamètre extérieur de l'appareil de forage par battage (12) et d'un tuyau à poser (16) enveloppant celui-ci, que l'assemblage par serrage de la tête de déplacement (14) avec l'appareil de forage par battage (12) est démontable, et que la tête de déplacement (14) a soit une buse à jet de liquide (18) placée approximativement sur son axe longitudinal, soit au moins deux buses à jet de liquide (18) orientées approximativement dans la direction de forage et placées approximativement symétriquement par rapport à l'axe longitudinal, qui peuvent être reliées à une source de liquide sous pression.
  2. Dispositif selon la revendication 1, caractérisé par le fait que plusieurs buses à jet de liquide (18) sont placées les unes derrière les autres dans la direction longitudinale de la tête de déplacement (14).
  3. Dispositif selon l'une des revendications 1 et 2, caractérisé par le fait que les buses à jet de liquide (18) ont des angles de jet par rapport à la direction longitudinale de la tête de déplacement (14) différents.
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé par le fait que la tête de déplacement (14) présente des buses à jet de liquide supplémentaires (20) qui sont orientées au moins approximativement dans la direction opposée à la direction de forage.
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé par le fait que la tête de déplacement (14) présente des buses à jet de liquide supplémentaires (22) qui sont dirigées vers l'extérieur perpendiculairement à l'axe longitudinal de l'appareil de forage par battage (10).
  6. Dispositif selon l'une des revendications 1 à 5, caractérisé par le fait que l'amenée de liquide sous pression à chaque buse à jet de liquide (18, 20, 22) peut être commandée individuellement en ce qui concerne la pression et/ou le débit de ce liquide.
  7. Dispositif selon l'une des revendications 1 à 6, caractérisé par le fait que l'angle de jet de chacune des buses (18, 20, 22) est réglable.
  8. Dispositif selon l'une des revendications 1 à 7, caractérisé par le fait que la tête de déplacement (14) est conique et présente sur sa surface latérale des rainures (24) réparties symétriquement par rapport à son axe longitudinal dans lesquelles sont placées les buses à jet de liquide (18, 20, 22).
  9. Dispositif selon l'une des revendications 1 à 7, caractérisé par le fait que la tête de déplacement (14) est étagée et présente des rainures (24) réparties symétriquement par rapport à son axe longitudinal dans lesquelles sont placées les buses à jet de liquide (18, 20, 22).
  10. Dispositif selon l'une des revendication 1 à 9, caractérisé par le fait que les buses à jet de liquide (18, 20, 22) sont reliées à des canaux parallèles à l'axe (26) qui s'étendent entre la paroi du corps de l'appareil moteur (12) et le tuyau à introduire (16) ou à l'intérieur de cette paroi et dont les extrémités opposées à la tête sont reliées par des conduites souples à la source de liquide sous pression.
  11. Dispositif selon l'une des revendications 1 à 10, caractérisé par le fait que des vannes (28) pour la commande de l'amenée de liquide sous pression aux différentes buses à jet de liquide (18, 20, 22) sont prévues dans la tête de déplacement (14).
  12. Dispositif selon l'une des revendications 1 à 10, caractérisé par le fait que des vannes (28) pour la commande de l'amenée de liquide sous pression aux différentes buses à jet de liquide (18, 20, 22) sont prévues sur la source de liquide sous pression.
  13. Dispositif selon l'une des revendications 1 à 12, caractérisé par le fait que dans la tête de déplacement (14) est monté un émetteur (34) pour la détermination de la position de l'appareil de forage du sol (10).
  14. Dispositif selon l'une des revendications 1 à 13, caractérisé par le fait que le corps de l'appareil de forage par battage dynamique (12) est joint à une conduite d'évacuation d'air étanche à l'eau qui évacue l'air comprimé nécessaire à la propulsion de cet appareil (12).
EP92120355A 1991-12-20 1992-11-27 Dispositif pour réaliser des forages dans le sol Expired - Lifetime EP0548588B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4142343 1991-12-20
DE4142343A DE4142343C2 (de) 1991-12-20 1991-12-20 Vorrichtung zur Herstellung von Erdbohrungen

Publications (2)

Publication Number Publication Date
EP0548588A1 EP0548588A1 (fr) 1993-06-30
EP0548588B1 true EP0548588B1 (fr) 1997-07-30

Family

ID=6447741

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92120355A Expired - Lifetime EP0548588B1 (fr) 1991-12-20 1992-11-27 Dispositif pour réaliser des forages dans le sol

Country Status (3)

Country Link
US (1) US5339909A (fr)
EP (1) EP0548588B1 (fr)
DE (1) DE4142343C2 (fr)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19607365C5 (de) * 1996-02-27 2004-07-08 Tracto-Technik Paul Schmidt Spezialmaschinen Verfahren zum Lenken eines Erdbohrgeräts und ein lenkbares Gerät zum Herstellen einer Erdbohrung
DE19681366D2 (de) * 1996-03-23 1999-03-11 Herrenknecht Gmbh Verdrängungsmaschine
CA2311158A1 (fr) * 2000-06-09 2001-12-09 Tesco Corporation Methode de forage avec tubage de revetement
US7475742B2 (en) * 2000-06-09 2009-01-13 Tesco Corporation Method for drilling with casing
DE10205826A1 (de) * 2001-10-18 2003-05-08 Fitr Ges Fuer Innovation Im Ti Verfahren zum Verlegen von Rohren mittels unterirdischem Rohrvortrieb
JP4024086B2 (ja) * 2002-06-07 2007-12-19 株式会社小松製作所 地盤孔明け用の先導体および地盤孔明機
CA2609018A1 (fr) * 2007-09-28 2009-03-28 Stephane Labelle System to improve the exploitation of high-energy geothermy
US8011149B2 (en) 2008-06-27 2011-09-06 Knudsen N Eric Post sleeve assembly
US7861434B2 (en) 2009-03-13 2011-01-04 Knudsen N Eric Post sleeve positioning apparatus and method
DE102009036324A1 (de) * 2009-08-06 2011-02-10 Rehau Ag + Co. Erdwärmesondeneinbauvorrichtung
DE102009036325A1 (de) * 2009-08-06 2011-02-10 Rehau Ag + Co. Einbauvorrichtung für eine Erdwärmesonde
US8820007B2 (en) 2011-09-12 2014-09-02 N. Eric Knudsen Device for forming post sleeves, and method of use
DE102014201420A1 (de) * 2014-01-27 2015-07-30 Rüdiger Kögler Erstellung eines Bohrlochs und gleichzeitige Verlegung einer Rohrleitung in dem Bohrloch
RU2693805C2 (ru) 2015-05-29 2019-07-04 Херренкнехт Аг Система (варианты) и способ приповерхностной прокладки подземных кабелей или подземных линий в грунте
US10214940B2 (en) 2016-03-11 2019-02-26 N. Eric Knudsen Post sleeve positioning apparatus and related methods
US10590713B1 (en) 2018-05-28 2020-03-17 Richard Allen Puppel Soil boring device and a kit including the same
JP7193406B2 (ja) 2019-04-03 2022-12-20 鹿島建設株式会社 空気掘削具
DE102020005128A1 (de) 2020-08-21 2022-02-24 Tracto-Technik Gmbh & Co. Kg Bohrkopf für eine schlagend verdrängende Erdbohrvorrichtung und Verwendung eines Borhkopfs für eine schlagend verdrängende Erdbohrvorrichtung

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD289073A5 (de) * 1989-11-14 1991-04-18 Veb Ingenieurbetrieb Der Energieversorgung,De Vorrichtung zum unterirdischen rohrvortrieb zur aufgrabungsfreien verlegung von versorgungsleitungen

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1906706A (en) * 1931-05-06 1933-05-02 Thomas F Moore Hole punching device
US2126576A (en) * 1935-06-07 1938-08-09 Ranney Leo Apparatus for and method of boring into and treating earth material
GB946451A (en) * 1959-05-25 1964-01-15 Nippon Sharyo Seizo Kk Improvements in methods of and apparatus for digging deep holes in the ground
US3221558A (en) * 1963-05-31 1965-12-07 Kennecott Copper Corp Sampling method and apparatus
US3659536A (en) * 1970-10-01 1972-05-02 Robert B White Root feeder device
US3945444A (en) * 1975-04-01 1976-03-23 The Anaconda Company Split bit casing drill
US3934659A (en) * 1975-04-15 1976-01-27 Mikhail Ivanovich Tsiferov Apparatus for drilling holes in earth surface
DE2630891C3 (de) * 1976-07-09 1979-01-04 Paul 5940 Lennestadt Schmidt Vorrichtung zum Verbinden eines mit einem Aufweitkonus versehenen Erdverdrängungshammers mit einem Nachziehrohr
DE2924393C2 (de) * 1979-06-16 1983-06-23 Brückner Grundbau GmbH, 4300 Essen Bohrvorrichtung zum Überlagerungsbohren
DE3226568C2 (de) * 1982-07-16 1984-05-17 Gustav Dr.-Ing. 4300 Essen Jenne Rammkopf für pneumatische Rammgeräte
GB2126267A (en) * 1982-09-07 1984-03-21 Coal Ind Drilling methods and equipment
DE3533995A1 (de) * 1985-09-24 1987-04-16 Tracto Technik Rammbohrgeraet mit schlagmesserkolben
US4700776A (en) * 1985-10-10 1987-10-20 Well Improvement Specialists, Inc. Sand control devices and method of installation thereof
US4749050A (en) * 1987-02-13 1988-06-07 Ritter Lester L Impact tool for tunneling
DE3818998C3 (de) * 1988-06-03 2003-02-27 Tracto Technik Verfahren zum Verlegen von Versorgungsleitungen
DE3911467A1 (de) * 1989-04-08 1990-10-11 Tracto Technik Selbstantreibbares rammbohrgeraet, insbesondere fuer die herstellung von rohrfoermigen erdbohrungen

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD289073A5 (de) * 1989-11-14 1991-04-18 Veb Ingenieurbetrieb Der Energieversorgung,De Vorrichtung zum unterirdischen rohrvortrieb zur aufgrabungsfreien verlegung von versorgungsleitungen

Also Published As

Publication number Publication date
DE4142343A1 (de) 1993-06-24
US5339909A (en) 1994-08-23
DE4142343C2 (de) 1996-10-24
EP0548588A1 (fr) 1993-06-30

Similar Documents

Publication Publication Date Title
EP0548588B1 (fr) Dispositif pour réaliser des forages dans le sol
DE60218282T2 (de) Aufweitvorrichtung
EP0494408B1 (fr) Procédé et appareil pour élargir un puits de forage
DE3419517A1 (de) Verfahren zum unterirdischen einbau von rohrleitungen und vorrichtung zur durchfuehrung des verfahrens
EP0522446B1 (fr) Procédé pour contrÔler la direction d'un appareil de forage du sol et dispositif pour l'exécution de forages
DE4433533C1 (de) Rammbohrvorrichtung
EP0293584B1 (fr) Dispositif de forage pour méthode de forage par injection à haute pression
DE3738420C2 (fr)
DE2641453B2 (de) Verfahren und Vorrichtung zum Brechen von Gestein
EP0474070A1 (fr) Méthode et dispositif pour produire un rideau étroit ou souterrain dans la terre
EP0886034A2 (fr) Dispositif de forage
DE3801824C1 (en) Method and apparatus for the trenchless laying of supply lines
EP2447462A1 (fr) Procédé d'introduction souterraine d'une conduite
DE2505668B2 (de) Vorrichtung zum ueberlagerungsbohren
DE102015107194A1 (de) Bohranlage zum Erzeugen oder Aufweiten einer Erdbohrung im Erdreich und Verfahren zur Steuerung eines Vorschubantriebs einer solchen Bohranlage
DE19533281C2 (de) Vorrichtung zum Vortrieb von Hohlprofilen in den Baugrund
DE4116771C2 (de) Vorrichtung zum Herstellen von Erdbohrungen
DE4006320C1 (en) Straight line tunnel borer - has guide tube to which casing is connected with load-out conveyor
AT393292B (de) Vorrichtung zur herstellung von durch zugabe von binde- oder abdichtemitteln verdichteten bodenabschnitten
DE3926787C2 (de) Verfahren und Vorrichtung zum Einbringen und Verankern eines Zugpfahls
DE3501215C2 (fr)
DE2406030A1 (de) Verfahren zum herstellen von bohrungen im erdboden durch spuelbohren und maschine zur durchfuehrung des verfahrens
EP4100611B1 (fr) Dispositif de pose de tuyaux dans le sol
DE3513194C1 (de) Vorrichtung zum Durchdringen oberflächennaher Bodenschichten
DE10327470B3 (de) Vorrichtung zur Herstellung von Einzelschlitzen oder durchgehenden Wänden im Erdreich nach dem Mixed-in-Place-Verfahren

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 DK ES FR GB GR IE IT LI LU MC NL PT SE

RBV Designated contracting states (corrected)

Designated state(s): CH FR GB LI

REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

17P Request for examination filed

Effective date: 19931111

17Q First examination report despatched

Effective date: 19950306

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

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

Kind code of ref document: B1

Designated state(s): CH FR GB LI

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

Effective date: 19970730

Ref country code: FR

Effective date: 19970730

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: PATENTANWALTSBUERO FELDMANN AG

EN Fr: translation not filed
GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 19970730

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

Ref country code: CH

Payment date: 20010226

Year of fee payment: 9

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: 20011130

Ref country code: CH

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

Effective date: 20011130

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL