EP0355379A2 - Boulon d'ancrage du type forage-injection - Google Patents

Boulon d'ancrage du type forage-injection Download PDF

Info

Publication number
EP0355379A2
EP0355379A2 EP89112936A EP89112936A EP0355379A2 EP 0355379 A2 EP0355379 A2 EP 0355379A2 EP 89112936 A EP89112936 A EP 89112936A EP 89112936 A EP89112936 A EP 89112936A EP 0355379 A2 EP0355379 A2 EP 0355379A2
Authority
EP
European Patent Office
Prior art keywords
anchor
drill bit
hollow body
drilling
anchor shaft
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
EP89112936A
Other languages
German (de)
English (en)
Other versions
EP0355379B1 (fr
EP0355379A3 (fr
Inventor
Ischebeck Gmbh Friedr
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.)
Friedr Ischebeck GmbH
Original Assignee
Friedr Ischebeck 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 Friedr Ischebeck GmbH filed Critical Friedr Ischebeck GmbH
Priority to AT89112936T priority Critical patent/ATE86356T1/de
Publication of EP0355379A2 publication Critical patent/EP0355379A2/fr
Publication of EP0355379A3 publication Critical patent/EP0355379A3/fr
Application granted granted Critical
Publication of EP0355379B1 publication Critical patent/EP0355379B1/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
    • E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
    • E21B17/1078—Stabilisers or centralisers for casing, tubing or drill pipes
    • 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
    • E21B10/00—Drill bits
    • E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
    • 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
    • E21B17/18—Pipes provided with plural fluid passages
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
    • E21D21/0053—Anchoring-bolts in the form of lost drilling rods

Definitions

  • the invention relates to a drilling injection anchor, with a thread passage running through the wall of the anchor shaft, a drill bit arranged at the front end, the cutting bits assigned to the drill bit and a central channel running in the axial direction and ending in the area of the drill bit for supplying a flushing agent.
  • a continuous thread extends on the jacket wall side, at the front end of which a drill bit is arranged.
  • This is equipped with two carbide cutting edges on the tip.
  • Two diametrically opposed channels lead to these, which open into an annular space.
  • a radial channel starts from the latter, which allows flushing agent or the like to be fed in during drilling through a central channel running in the axial direction and ending in the area of the drill bit.
  • the diameter of the drill bit is significantly larger than the anchor shaft. This creates an annular space for the removal of cuttings and washing-up liquid.
  • Grouting anchors for sandy, cohesive soils and for loose rock are also known. So that the drilling block does not collapse, a jacking pipe or protective pipe is drilled in.
  • the actual anchor consisting of single-rod anchors (ribbed prestressing steel) or high-strength strands, is inserted into this protective tube.
  • the protective tube is pulled at the same time. The resulting annular space is immediately filled with cement paste.
  • a disadvantage of these designs is that cuttings and washing-up liquid wash around the drill bit and thus the wall of the bore, e.g. B. in clay soils. This has to As a result, the borehole diameter is increased to an extent that cannot be calculated in advance and thus more cement paste is required for pressing. Furthermore, there is a risk that the drill block will collapse and the drill bit will run out of the direction.
  • Another disadvantage is the use of grout anchors for sandy, cohesive soils and loose rock.
  • the introduction of such grout anchors is much more labor-intensive and therefore also more expensive than the introduction of drilling injection anchors into solid soils.
  • the object of the invention is based on the object of designing a drill injection anchor of the type mentioned in such a way that it does not soften the bore wall during the drilling process and that it can be used both in solid and in sandy, cohesive soils or in loose rock.
  • the drill bit has a cylindrical hollow body arranged at a distance from the anchor shaft of the drill injection anchor, in order to form a flow-through annular space between the outer wall of the anchor shaft and the inner wall of the hollow body, the hollow body having a length which is at least approximately corresponds to the diameter of the drill bit.
  • the cylindrical hollow body which is arranged at a distance from the anchor shaft on the drill bit, is used for better removal of cuttings and washing-up liquid. These flow through the annular space formed between the outer wall of the anchor shaft and the inner wall of the hollow body and can thus Bore wall, e.g. B. in clay soils, do not soften.
  • This training has the advantage that the borehole diameter is not increased by the flowing off drilling cuttings and washing-up liquid and therefore only the pre-calculated amount of cement paste is required.
  • the hollow body stabilizes the hole wall in the area of the drill bit. The result of this is that the borehole cannot collapse during the advance and, as a result, the drill bit runs out of direction.
  • the length of the hollow body corresponds at least approximately to the diameter of the drill bit.
  • a drill injection anchor designed in this way receives a uniform bore wall (with a substantially constant cross-section over the entire length of the bore) and does not run out of direction.
  • this drilling injection anchor can be used in both solid and loose soils.
  • An advantageous further development can be seen in the fact that the hollow body is a piece of pipe.
  • the cutting edges act as cutting elements are formed, which have an extension projecting into the annular space, which the hollow body from the outer wall of the armature distance and by means of which the hollow body is connected to the anchor shaft. The resulting openings on the front of the drill head are used to remove cuttings and detergent.
  • the distance between the outside of the hollow body and the wall of the anchor shaft corresponds to the extent of the cement covering. Furthermore, it turns out to be advantageous when flushing during the drilling operation that the cutting elements are connected to a cutting support that can be screwed onto the tip of the anchor shaft and that at least one flushing opening that opens outward is formed in the cutting support and is connected to the flushing channel. Another, radially arranged flushing opening, which opens towards the side wall of the borehole, passes through the cutter carrier and the extension of a cutter element. Another advantageous feature is that the drill injection anchor is hot-dip galvanized. This creates a second corrosion protection in addition to the cement stone cover.
  • the anchor shaft is seated in a corrugated tube made of polyethylene (PE), the annular space being pressed with cement glue at the factory.
  • PE polyethylene
  • This anchor shaft, coated with corrugated pipe and cement stone, is then additionally grouted with cement glue on site.
  • untreated, raw drilling injection anchors are used, which are protected by an even layer of cement stone of at least 2 cm. There is no double protection against corrosion.
  • the drilling injection anchor is provided with double protection against corrosion by hot-dip galvanizing and uniform cement stone covering, both for temporary and permanent use. A laborious covering of the anchor shaft with a corrugated tube and the subsequent pressing of the annular space with cement paste is not necessary.
  • a spacer element is assigned to the drill injection anchor, the spacer element having a mounting hub which has a larger inner diameter than the outer diameter of the anchor shaft thread for the freely displaceable seating on the anchor shaft.
  • the spacer element is attached to the anchor shaft. The consequence of this is that the spacer element also rotates during the drilling process and damages the bore wall or a protective tube that may be inserted. This danger does not exist with the subject of the application, since in this case, due to the larger inner diameter of the hub compared to the outer diameter of the armature shaft, the spacer element is seated on the armature shaft in a freely displaceable manner. As a result, the spacing element cannot move to rotate during the drilling process of the anchor juice. A possible frictional connection between the inner wall of the hub and the outer wall of the anchor shaft usually counteracts the friction of the spacer element on the wall of the bore.
  • the mounting hub is connected via spacer elements to form conduction paths with an outer ring body which has an outer diameter which corresponds to the outer diameter of the hollow body of the drill bit.
  • the mounting hub is connected to an outer ring body via spacer elements.
  • This advantageous development contains the Advantage that the spacer element does no cutting or scraping work on the borehole wall, as is possible with the radially arranged web elements of the known designs. The unobstructed drainage of cuttings and washing-up liquid is guaranteed by the formation of conduit paths. Since the outer diameter of the ring body corresponds to that of the hollow body of the drill bit, the anchor shaft is centered in the drill bit, with the result that after the drilling injection anchor has been pressed in, a uniform cement stone covering is obtained.
  • the spacer element is made of plastic and is therefore protected against corrosion.
  • the hub diameter corresponds to the outside diameter of the coupling nut.
  • the spacer element is taken along by the coupling nut. Due to the fact that the individual drill injection anchor elements are connected at a distance of 2 - 3 m with coupling nuts, each of which is preceded by a spacer, the drill injection anchor is stored at previously calculable points and thus centered.
  • the drilling injection anchor 1 shown in FIG. 1 has on the jacket wall 20 of its hot-dip galvanized anchor shaft 2 a thread 3 extending uniformly over its entire length.
  • a flushing channel 4 is located in the center and over the entire length of the anchor shaft 2, in the axial direction. which is used to supply a detergent or the like.
  • a drill bit 5 is assigned to it. This consists of a cutter holder 6, three cutter elements 7 - 9 arranged radially and at the same angle to one another and a hollow body 10 designed as a tube piece.
  • the cutter holder 6 is screwed onto the terminal thread of the anchor shaft 2 by means of a hot-dip galvanized, cylindrical receptacle 11, which has an internal thread 12.
  • This receptacle 11 is closed at its front end by a hot-galvanized cutter support head 13 which forms a drill tip.
  • a hot-galvanized cutter support head 13 On the side facing the receptacle 11, an annular space 14 is formed, from which three radially arranged flushing openings 15 lead to the end face of the cutter carrier head 13.
  • the cutter carrier head 13 is equipped with three pointed cutting elements 7-9 made of hard metal. These have extensions 16 which are supported on the lateral surface of the receptacle 11.
  • One from Annular space 14 extending radial channel 18 passing through the cutter holder 6 and the cutting element 7 and opening towards the borehole side wall 17 serves as an additional flushing opening during the drilling process.
  • the hollow body 10 is connected by welding to the extensions 16 serving as spacing elements.
  • the length of the hollow body 10 corresponds approximately to 1.5 times the diameter of the drill bit 5.
  • the diameter of the hollow body 10 is approximately equal to that of the drill head 5, with the distance between the hollow body inner wall 19 and anchor shaft wall 20 must at least correspond to the required cement stone covering .
  • the free spaces 21 remaining between the extensions 16 serve to remove cuttings and washing-up liquid.
  • the two anchor shaft sections 2 'and 2 ⁇ connecting coupling nut 22 upstream, made of wear-resistant plastic spacer 23 is composed of a mounting hub 24, three radially and at the same angle to each other webs 25 and an outer ring body 26 together.
  • the inside diameter of the mounting hub 24 is larger than the outside diameter of the armature shaft 2 and thus allows the spacing element 23 to be moved freely.
  • the outside diameter of the mounting hub 24 corresponds to the outside diameter of the coupling nut 22, which, as a result, can take the spacing element 23 with it during the drilling process.
  • the webs 25 arranged on the mounting hub 24, which carry the outer ring body 26, leave line clearances 27 which are used for the removal of cuttings and washing-up liquid.
  • the outer diameter of the outer ring body 26 corresponds to that of the hollow body 10.
  • flushing is carried out through the flushing channel 4 via the flushing openings 15 and the radial channel 18 tel introduced into the hole.
  • This flushing agent is carried away, taking the cuttings, through the free spaces 21 formed between the extensions 16 of the cutting elements 7 - 9 and through the annular space 28 formed between the hollow body 10 and the anchor shaft 2.
  • the hollow body 10 simultaneously protects the borehole wall 17 against falling in and flushing out through the flushing stream.
  • the anchor shaft 2 rotates during further drilling in the spacer element 23, the cuttings and the rinsing liquid being able to flow between the webs 25 through the line clearances 27. Due to the larger inner diameter of the mounting hub 24 compared to the outer diameter of the armature shaft 2, the spacer element 23 remains freely displaceable and cannot rotate with the armature shaft 2. This has the consequence that the borehole wall 17 cannot be damaged by rotating the ring body 26.
  • the drill injection anchor 1 is suitable for both permanent and temporary use, whereby a double protection against corrosion is achieved in that the drill injection anchor 1 is hot-dip galvanized and provided with a uniform cement stone cover.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Earth Drilling (AREA)
  • Piles And Underground Anchors (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Dowels (AREA)
  • Joining Of Building Structures In Genera (AREA)
EP89112936A 1988-08-20 1989-07-14 Boulon d'ancrage du type forage-injection Expired - Lifetime EP0355379B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89112936T ATE86356T1 (de) 1988-08-20 1989-07-14 Bohr-injektionsanker.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3828335A DE3828335C1 (fr) 1988-08-20 1988-08-20
DE3828335 1988-08-20

Publications (3)

Publication Number Publication Date
EP0355379A2 true EP0355379A2 (fr) 1990-02-28
EP0355379A3 EP0355379A3 (fr) 1991-02-06
EP0355379B1 EP0355379B1 (fr) 1993-03-03

Family

ID=6361267

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89112936A Expired - Lifetime EP0355379B1 (fr) 1988-08-20 1989-07-14 Boulon d'ancrage du type forage-injection

Country Status (4)

Country Link
EP (1) EP0355379B1 (fr)
AT (1) ATE86356T1 (fr)
DE (2) DE3828335C1 (fr)
ES (1) ES2039765T3 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0541942A1 (fr) * 1991-11-09 1993-05-19 Gd-Anker Gmbh Tube de forage
WO2008092994A1 (fr) * 2007-02-01 2008-08-07 Sandvik Mining And Construction Oy Outil de forage
US8142109B2 (en) * 2008-03-18 2012-03-27 Dywidag-Systems International Gmbh Corrosion-protected, self-drilling anchor and anchor subunit and method for the production thereof
CN111335923A (zh) * 2020-05-19 2020-06-26 中铁五局集团第一工程有限责任公司 一种不良地质隧道软岩大变形的施工方法
CN116044312A (zh) * 2023-04-03 2023-05-02 湖南大学 一种可以实时监测注浆压力的曲线高压旋喷注浆钻头

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4127249C1 (fr) * 1991-08-17 1993-02-04 Gd-Anker Gmbh, 3370 Seesen, De
DE4201419C1 (en) * 1992-01-21 1993-08-19 Gd-Anker Gmbh, 3370 Seesen, De Rock anchor for location in rock with low cohesion factor - comprises outer bore anchor for making borehole and stabilising hole wall and injection anchor of hardenable material
DE4211334C1 (en) * 1992-01-21 1993-09-02 Gd-Anker Gmbh, 38723 Seesen, De Rock anchor for insertion in poorly cohesive rock - comprises bore anchor producing hole and stabilising hole walling and injection anchor inserted with hardenable medium
DE19503122B4 (de) * 1995-02-01 2004-07-22 Ibi Anker Gmbh Injektionsanker
DE29611966U1 (de) 1996-07-10 1997-11-13 Ischebeck Friedrich Gmbh Bohrkrone
EP1099799B1 (fr) 1999-11-10 2009-07-15 Smet-F & C Dispositif et procédé de fabrication d'un pieu par injection à haute pression
DE10013581B4 (de) * 2000-03-18 2017-11-09 Friedr. Ischebeck Gmbh Verwendung eines im Baubereich einzusetzenden Stahlteils
DE10106695B4 (de) * 2001-02-14 2010-11-25 Friedr. Ischebeck Gmbh Bohrkrone für einen Bohr- oder Injektionsanker
DE10234255B4 (de) * 2002-06-27 2010-07-01 Friedr. Ischebeck Gmbh Verwendung von Bohr-Injektionsankern als flächentragende Armierung eines Vortriebs-Gewölbeschirmes
DE102005042481A1 (de) * 2005-09-07 2007-03-08 Mkt Metall-Kunststoff-Technik Gmbh & Co. Kg Ankerstange
DE202009002360U1 (de) 2009-02-19 2009-05-20 Hartmann, Josef Erdanker mit Ankerteller
DE102010016484A1 (de) 2009-08-20 2011-02-24 Friedr. Ischebeck Gmbh Kupplung für das Verbinden von Ankerstangen
RU2452815C2 (ru) * 2010-08-30 2012-06-10 Федеральное государственное образовательное учреждение высшего профессионального образования "Кубанский государственный аграрный университет" Мультикорневой грунтовый анкер
DE102010061006A1 (de) 2010-12-03 2012-06-06 Friedr. Ischebeck Gmbh Kupplung, insbesondere für das Verbinden von Ankerstangen
RU2514261C1 (ru) * 2012-11-15 2014-04-27 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Кубанский государственный аграрный университет" Буроинъекционная свая с локальными уширениями
RU2524077C1 (ru) * 2013-01-10 2014-07-27 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Кубанский государственный аграрный университет" Буроинъекционная свая с наклонными локальными уширениями
RU2720595C1 (ru) * 2019-12-31 2020-05-12 Федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский государственный архитектурно-строительный университет" Способ повышения несущей способности сваи по грунту

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1518370A (en) * 1923-10-08 1924-12-09 J L Gray Drill
US2743086A (en) * 1952-01-29 1956-04-24 Exxon Research Engineering Co Pellet impact reaming apparatus
US3439757A (en) * 1968-03-12 1969-04-22 Wayland D Elenburg Drilling apparatus
US4055051A (en) * 1976-01-08 1977-10-25 The United States Of America As Represented By The Secretary Of The Interior Unitary drill bit and roof bolt
DE3400182A1 (de) * 1984-01-04 1985-07-11 Friedr. Ischebeck GmbH, 5828 Ennepetal Injektionsanker

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3204417C2 (de) * 1982-02-09 1986-01-02 Dyckerhoff & Widmann AG, 8000 München Anordnung zum Setzen eines Felsnagels

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1518370A (en) * 1923-10-08 1924-12-09 J L Gray Drill
US2743086A (en) * 1952-01-29 1956-04-24 Exxon Research Engineering Co Pellet impact reaming apparatus
US3439757A (en) * 1968-03-12 1969-04-22 Wayland D Elenburg Drilling apparatus
US4055051A (en) * 1976-01-08 1977-10-25 The United States Of America As Represented By The Secretary Of The Interior Unitary drill bit and roof bolt
DE3400182A1 (de) * 1984-01-04 1985-07-11 Friedr. Ischebeck GmbH, 5828 Ennepetal Injektionsanker

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0541942A1 (fr) * 1991-11-09 1993-05-19 Gd-Anker Gmbh Tube de forage
US5388655A (en) * 1991-11-09 1995-02-14 Gruber; Heinz Injection boring anchor with auger blade
WO2008092994A1 (fr) * 2007-02-01 2008-08-07 Sandvik Mining And Construction Oy Outil de forage
AU2008211808B2 (en) * 2007-02-01 2011-04-28 Sandvik Mining And Construction Oy Drilling tool
US8142109B2 (en) * 2008-03-18 2012-03-27 Dywidag-Systems International Gmbh Corrosion-protected, self-drilling anchor and anchor subunit and method for the production thereof
CN111335923A (zh) * 2020-05-19 2020-06-26 中铁五局集团第一工程有限责任公司 一种不良地质隧道软岩大变形的施工方法
CN116044312A (zh) * 2023-04-03 2023-05-02 湖南大学 一种可以实时监测注浆压力的曲线高压旋喷注浆钻头

Also Published As

Publication number Publication date
ES2039765T3 (es) 1993-10-01
EP0355379B1 (fr) 1993-03-03
EP0355379A3 (fr) 1991-02-06
DE3828335C1 (fr) 1989-11-30
ATE86356T1 (de) 1993-03-15
DE58903641D1 (de) 1993-04-08

Similar Documents

Publication Publication Date Title
EP0355379B1 (fr) Boulon d'ancrage du type forage-injection
EP0157395A2 (fr) Jet à tourbillons utilisé comme outil de travail hydraulique
EP0351668B1 (fr) Goujon pour façades
EP0855489B1 (fr) Perçoir qui déplace la terre
DE2343079A1 (de) Bohrverfahren und vorrichtung zu seiner durchfuehrung
DE19725628C1 (de) Bohrvorrichtung
DE3738420A1 (de) Verfahren und vorrichtung zur herstellung von pfaehlen im erdreich
DE19712181B4 (de) Bohrkrone
DE2343080A1 (de) Bohrverfahren und vorrichtung zu seiner durchfuehrung
DE1608274C3 (de) Verfahren zum Überlagerungsbohren in Erdreich oder lockerem Gestein
DE3045632C2 (fr)
DE4138356A1 (de) Bohrvorrichtung fuer den tiefbau sowie verfahren zum herstellen von stabilisierenden saeulen oder aehnlichen gebilden in erdreich
DE3501215C2 (fr)
DE2642014A1 (de) Anschlusstueck fuer bohrmeissel
EP0329835B1 (fr) Boulon autotaraudeuse pour ancrage par injection
DE4211059C1 (fr)
DE19616593C2 (de) Betonierschutz für Endlosschnecken
DE69908768T2 (de) Betonpfahl sowie verfahren zu seinem einbringen ins erdreich
DE19610238C2 (de) Vorrichtung zur Querschnittsvergrößerung einer Pilotbohrung
EP0254900A2 (fr) Stabilisateur pour train de tiges de forage
DE1533575B1 (de) Tiefbohrer mit einer exzenterbohrkrone
DE2631743A1 (de) Spanneinrichtung fuer gesteins- oder betonbohrer
DE10106695A1 (de) Bohrkrone für einen Bohr- oder Injektionsanker
DE19928683C2 (de) Anordnung zum Einführen eines Rohres in den Erdboden
DE2752544C2 (de) Schlagbohrspitze

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 ES FR GB GR IT LI LU 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 ES FR GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19910218

17Q First examination report despatched

Effective date: 19920423

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 ES FR GB GR IT LI LU NL SE

REF Corresponds to:

Ref document number: 86356

Country of ref document: AT

Date of ref document: 19930315

Kind code of ref document: T

REF Corresponds to:

Ref document number: 58903641

Country of ref document: DE

Date of ref document: 19930408

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

Effective date: 19930416

ITF It: translation for a ep patent filed

Owner name: STUDIO JAUMANN

REG Reference to a national code

Ref country code: GR

Ref legal event code: FG4A

Free format text: 3008052

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2039765

Country of ref document: ES

Kind code of ref document: T3

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
EPTA Lu: last paid annual fee
EAL Se: european patent in force in sweden

Ref document number: 89112936.3

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

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

Ref country code: ES

Payment date: 20080709

Year of fee payment: 20

Ref country code: DE

Payment date: 20080710

Year of fee payment: 20

Ref country code: CH

Payment date: 20080711

Year of fee payment: 20

Ref country code: LU

Payment date: 20080709

Year of fee payment: 20

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

Ref country code: AT

Payment date: 20080709

Year of fee payment: 20

Ref country code: NL

Payment date: 20080709

Year of fee payment: 20

Ref country code: IT

Payment date: 20080730

Year of fee payment: 20

Ref country code: FR

Payment date: 20080729

Year of fee payment: 20

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

Ref country code: GB

Payment date: 20080711

Year of fee payment: 20

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

Ref country code: SE

Payment date: 20080711

Year of fee payment: 20

Ref country code: BE

Payment date: 20080710

Year of fee payment: 20

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

Ref country code: GR

Payment date: 20080619

Year of fee payment: 20

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20090713

NLV7 Nl: ceased due to reaching the maximum lifetime of a patent

Effective date: 20090714

EUG Se: european patent has lapsed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20090715

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

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20090715

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 EXPIRATION OF PROTECTION

Effective date: 20090713

Ref country code: NL

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20090714