EP1860274B1 - Drill bit - Google Patents
Drill bit Download PDFInfo
- Publication number
- EP1860274B1 EP1860274B1 EP06008686A EP06008686A EP1860274B1 EP 1860274 B1 EP1860274 B1 EP 1860274B1 EP 06008686 A EP06008686 A EP 06008686A EP 06008686 A EP06008686 A EP 06008686A EP 1860274 B1 EP1860274 B1 EP 1860274B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plates
- drilling
- drill
- base plate
- auger bit
- 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.)
- Not-in-force
Links
- 238000005553 drilling Methods 0.000 claims description 30
- 230000007423 decrease Effects 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000002689 soil Substances 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- E21B10/00—Drill bits
- E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
-
- 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
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
Definitions
- the invention relates to a drill bit for an auger according to the preamble of claim 1.
- a drill bit is for example from the EP 1 580 397 A1 known. Drill bits are subject to considerable wear and must therefore be replaced frequently. In addition, there are drilling methods in which a drill tip is intended to remain in the ground. In such a drilling method with a so-called lost drill tip these are solved by reaching a desired drilling depth of a drill pipe, so that from the drill pipe can flow out a curable suspension for creating a drill column.
- the DE 89 08 131 U1 describes various drill bits for a trained as Verdrängerbohrer Erdbohrer.
- One from the DE 89 08 131 U1 known embodiment of a drill bit has a centrally located, massive Verdrängerspitze and two offset by 180 °, spiral Verdrängerrippen, which are applied to a flat end portion.
- the US 2,973,821 discloses an auger having two half tube-shaped elements.
- the half-tube-shaped elements combine to form a tube-like linkage element, at the lower end of which a drill bit is arranged.
- the US 3,786,876 discloses an ice drill for use in fishing.
- the ice drill has blade elements with spiral-like cutting surfaces.
- the drill head has a circular edge element, on the outside of which drill teeth are provided. At the edge element three rib elements are provided at an angular distance of 120 °, which protrude from the circular edge element in the drilling direction.
- the rib members have toothed, convex edges that converge in the direction of drilling.
- the DE 1 263 652 A describes a drill head with a rotating drum on which two support bodies are arranged. On each support body in the direction of rotation curved back segment is attached, which represents a section of a screw surface. Chisels are arranged on the segments.
- the invention has for its object to provide a drill tip that is particularly well meet the requirements for the most cost-effective drill bits with a continued good operability.
- a drill bit according to the invention at least two curved plates are provided which extend radially outward from a drilling axis and whose axial height decreases radially outwardly.
- the plates, which form cutting helix run like a turbine wheel from a center region on the drilling axis radially outward. This arcuate course with the tapering to the drilling axis allows a very good centering function of the drill bit.
- the use of simple curved plates ensures a cost-effective construction.
- the use of simple sheet metal parts allows a cost-effective welded construction, which is particularly advantageous in the disposable use as a lost drill bit.
- the plates are provided with the same radius of curvature and are segments of a cylindrical tube, whereby a particularly inexpensive embodiment is obtained.
- the curved plates can therefore be manufactured in a simple manner from inexpensive tubes.
- the arcuate curvature need not be generated separately by bending, but results in a simple manner by the tube radius.
- the plates have approximately quarter-arc segments with triangular or trapezoidal contour.
- an edge of the plates may extend parallel to the cylinder or bending axis and be formed in a straight line.
- the curved plates could adjoin one another directly in the region of the drilling axis of the drill bit to be formed and be welded together. According to the invention, however, it is provided that coaxially to the drilling axis, a central element is arranged, to which the plates adjoin.
- the center element may be formed about a rod made of a steel or other hard material. This central element can serve to increase the rigidity as well as to accurately position and reliably secure the bent plates.
- the central element can also have a tip, which projects axially relative to the curved plates.
- a particularly good centering function is achieved according to the invention in that three or four plates are provided, which are arranged with a uniform angular distance from each other.
- a pipe main body is preferably provided for attachment to a drill pipe.
- This may be, for example, a short piece of pipe made of steel, which can be rotatably connected to the drill pipe.
- a seal in particular in a designated annular groove, be provided for sealing against the drill pipe. The tube body can be inserted into the drill pipe or pushed over the drill pipe.
- a base plate is provided, on which the plates are arranged.
- the curved plates on a flat edge, with which they can be reliably welded to a flat base plate.
- the base plate is attached to the fixed bent plates on the pipe body, in particular by welding.
- a form-fitting device for a releasable connection with a drill string can be recesses or protruding bolts or edges which can engage and cooperate with the drill string to form a bayonet closure in correspondingly designed positive-locking elements on the drill string.
- a good centering function is achieved according to the invention in that the axes of curvature of the curved plates are arranged parallel or inclined to the drilling axis. In the inclined arrangement, the axes of curvature of the curved plates are tilted towards the drilling axis.
- a drill bit of the type described above is arranged on the drill pipe.
- a drilling tool can be created in particular in a reliable and cost-effective manner, a concrete element in the ground with a lost drill bit.
- the embodiment of a drill bit 10 according to the invention according to the FIGS. 1 to 4 includes a tube body 18, which is closed at one end with a base plate 20.
- a cylindrical center element 16 is arranged coaxially to the central axis or drilling axis 14, which is flattened at its free end.
- two curved plates 12 are arranged on the base plate 20 and on the middle element 16.
- the two curved plates 12 have a trapezoidal contour, as in particular from Fig. 3 can be seen.
- the bent plates 12 are cut as a quarter-circle-shaped segments from a tube. This allows a particularly cost-effective and stable design of the plates 12th
- the plates 12 have an axial height which corresponds to the length of the central element 16.
- the Height of the plates decreases radially outward, so that a desired tip shape is generated.
- the edge of the plates 12 forming a cutting edge extends approximately partially helically, which is favorable for the centering and tip function. This advantageous course results in a simple manner by a straight, but guided at a helix angle section in a tube from which the plates 12 are made.
- the outer diameter of the round base plate 20 is greater than the outer diameter of the hollow cylindrical tube body 18.
- recesses are used for releasably connecting the drill bit 10 to a drill string, not shown, in particular a hollow drill pipe.
- FIGS. 5 to 7 Another embodiment of a drill bit 10 according to the invention is in the FIGS. 5 to 7 shown.
- the tube body 18 and the base plate 20 with the recesses as form-fitting devices 22 are formed as in the previous embodiment.
- the drill bit 10 is an inclined arrangement of the axes of curvature of the curved plates 12 to the drilling axis 14 given.
- the central element 16 is formed as a trapezoidal or in cross-section approximately triangular body, which tapers from the base plate 20 to the free tip.
- the actual free tip is formed in this drill bit 10 by the upper edges of the curved plates 12.
- these are bevelled on their underside or they are, as in Fig. 5 shown, recesses provided in the base plate 20.
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Drilling Tools (AREA)
- Holo Graphy (AREA)
- Surgical Instruments (AREA)
Abstract
Description
Die Erfindung betrifft eine Bohrspitze für einen Erdbohrer gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a drill bit for an auger according to the preamble of claim 1.
Eine Bohrspitze ist beispielsweise aus der
Es besteht daher das Interesse, derartige Bohrspitzen möglichst kostengünstig jedoch bei einer weiter guten Funktionsfähigkeit auszuführen, welche für ein möglichst verlauffreies Abbohren in den Erdboden nötig ist. Zu diesem Zweck lehrt die
Die
Die
Die
Aus der
Die
Der Erfindung liegt die Aufgabe zugrunde, eine Bohrspitze anzugeben, die den Anforderungen nach möglichst kostengünstigen Bohrspitzen bei einer weiter guten Funktionsfähigkeit besonders gut gerecht wird.The invention has for its object to provide a drill tip that is particularly well meet the requirements for the most cost-effective drill bits with a continued good operability.
Die Aufgabe wird nach der Erfindung durch eine Bohrspitze mit den Merkmalen des Anspruchs 1 gelöst. Bevorzugte Ausführungsformen der Erfindung sind in den abhängigen Ansprüchen angegeben.The object is achieved according to the invention by a drill bit with the features of claim 1. Preferred embodiments The invention are set forth in the dependent claims.
Bei einer erfindungsgemäßen Bohrspitze sind mindestens zwei gebogene Platten vorgesehen, welche sich von einer Bohrachse radial nach außen erstrecken und deren axiale Höhe radial nach außen abnimmt. Bei der erfindungsgemäßen Bohrspitze verlaufen die Platten, welche Schneidwendel bilden, turbinenradartig von einem Mittenbereich an der Bohrachse radial nach außen. Dieser bogenförmige Verlauf mit der Zuspitzung zur Bohrachse hin ermöglicht eine sehr gute Zentrierfunktion der Bohrspitze. Gleichzeitig sorgt die Verwendung einfacher gebogener Platten für einen kostengünstigen Aufbau. Die Verwendung einfacher Blechteile erlaubt eine kostengünstige Schweißkonstruktion, was insbesondere bei der Einwegverwendung als verlorene Bohrspitze vorteilhaft ist.In a drill bit according to the invention, at least two curved plates are provided which extend radially outward from a drilling axis and whose axial height decreases radially outwardly. In the drill bit according to the invention, the plates, which form cutting helix, run like a turbine wheel from a center region on the drilling axis radially outward. This arcuate course with the tapering to the drilling axis allows a very good centering function of the drill bit. At the same time, the use of simple curved plates ensures a cost-effective construction. The use of simple sheet metal parts allows a cost-effective welded construction, which is particularly advantageous in the disposable use as a lost drill bit.
Nach der Erfindung ist vorgesehen, dass die Platten mit gleichem Krümmungsradius versehen sind und Segmente eines zylindrischen Rohres sind, wodurch eine besonders kostengünstige Ausgestaltung erhalten wird. Die gebogenen Platten können also in einfacher Weise aus kostengünstigen Rohren gefertigt werden. Die bogenförmige Krümmung muss nicht gesondert durch Biegen erzeugt werden, sondern ergibt sich in einfacher Weise durch den Rohrradius.According to the invention it is provided that the plates are provided with the same radius of curvature and are segments of a cylindrical tube, whereby a particularly inexpensive embodiment is obtained. The curved plates can therefore be manufactured in a simple manner from inexpensive tubes. The arcuate curvature need not be generated separately by bending, but results in a simple manner by the tube radius.
Für eine gute Zentrierfunktion ist es nach der Erfindung vorteilhaft, dass die Platten etwa viertelkreisbogenförmige Segmente mit dreieckiger oder trapezförmiger Kontur aufweisen. Dabei kann eine Kante der Platten parallel zur Zylinder- oder Biegeachse verlaufen und geradlinig ausgebildet sein.For a good centering function, it is advantageous according to the invention that the plates have approximately quarter-arc segments with triangular or trapezoidal contour. In this case, an edge of the plates may extend parallel to the cylinder or bending axis and be formed in a straight line.
Grundsätzlich könnten die gebogenen Platten im Bereich der Bohrachse der zu bildenden Bohrspitze unmittelbar aneinander grenzen und miteinander verschweißt sein. Nach der Erfindung ist jedoch vorgesehen, dass koaxial zur Bohrachse ein Mittenelement angeordnet ist, an welches die Platten angrenzen. Das Mittenelement kann etwa eine Stange aus einem Stahl oder einem anderen harten Material gebildet sein. Dieses Mittenelement kann zur Erhöhung der Steifigkeit sowie zur genauen Positionierung und zuverlässigen Befestigung der gebogenen Platten dienen. Grundsätzlich kann das Mittenelement auch eine Spitze aufweisen, welche axial gegenüber den gebogenen Platten vorsteht.In principle, the curved plates could adjoin one another directly in the region of the drilling axis of the drill bit to be formed and be welded together. According to the invention, however, it is provided that coaxially to the drilling axis, a central element is arranged, to which the plates adjoin. The center element may be formed about a rod made of a steel or other hard material. This central element can serve to increase the rigidity as well as to accurately position and reliably secure the bent plates. In principle, the central element can also have a tip, which projects axially relative to the curved plates.
Eine besonders gute Zentrierfunktion wird nach der Erfindung dadurch erreicht, dass drei oder vier Platten vorgesehen sind, welche mit einem gleichmäßigen Winkelabstand zueinander angeordnet sind.A particularly good centering function is achieved according to the invention in that three or four plates are provided, which are arranged with a uniform angular distance from each other.
Bevorzugt ist bei der erfindungsgemäßen Bohrspitze zum Anbringen an einem Bohrrohr ein Rohrgrundkörper vorgesehen. Hierbei kann es sich beispielsweise um ein kurzes Rohrstück aus Stahl handeln, das mit dem Bohrrohr drehfest verbunden werden kann. Durch den Rohrgrundkörper wird die Stabilität des Aufbaus weiter erhöht. An dem Rohrgrundkörper kann eine Dichtung, insbesondere in einer dafür vorgesehenen Ringnut, zum Abdichten gegenüber dem Bohrrohr vorgesehen sein. Der Rohrgrundkörper kann in das Bohrrohr eingeführt oder über das Bohrrohr geschoben werden.In the case of the drill bit according to the invention, a pipe main body is preferably provided for attachment to a drill pipe. This may be, for example, a short piece of pipe made of steel, which can be rotatably connected to the drill pipe. Through the tube body, the stability of the structure is further increased. On the pipe base body, a seal, in particular in a designated annular groove, be provided for sealing against the drill pipe. The tube body can be inserted into the drill pipe or pushed over the drill pipe.
Erfindungsgemäß ist es weiter, dass eine Grundplatte vorgesehen ist, an welcher die Platten angeordnet sind. Hierzu weisen die gebogenen Platten eine ebene Kante auf, mit welcher diese zuverlässig auf eine ebene Grundplatte aufgeschweißt werden können. Grundsätzlich ist es aber auch mögdie gebogenen Platten direkt auf den Rohrgrundkörper aufzuschweißen. Für eine gute Dichtigkeit sowie eine hohe Stabilität ist es jedoch bevorzugt, dass die Grundplatte mit den befestigten gebogenen Platten am Rohrgrundkörper insbesondere durch Schweißen befestigt wird.According to the invention it is further provided that a base plate is provided, on which the plates are arranged. For this purpose, the curved plates on a flat edge, with which they can be reliably welded to a flat base plate. In principle, however, it is also possible to weld the bent plates directly onto the tube body. For a good tightness and high stability, however, it is preferred that the base plate is attached to the fixed bent plates on the pipe body, in particular by welding.
Nach der Erfindung ist es besonders zweckmäßig, das am Rohrgrundkörper oder der Grundplatte eine Formschlusseinrichtung für eine lösbare Verbindung mit einem Bohrgestänge vorgesehen ist. Dies können Ausnehmungen oder vorstehende Bolzen oder Kanten sein, die zur Bildung eines Bajonettverschlusses in hierzu korrespondierend ausgebildeten Formschlusselementen am Bohrgestänge eingreifen und mit diesen zusammenwirken können.According to the invention, it is particularly expedient that is provided on the pipe base body or the base plate a form-fitting device for a releasable connection with a drill string. These can be recesses or protruding bolts or edges which can engage and cooperate with the drill string to form a bayonet closure in correspondingly designed positive-locking elements on the drill string.
Eine gute Zentrierfunktion wird nach der Erfindung dadurch erreicht, dass die Krümmungsachsen der gebogenen Platten parallel oder geneigt zu der Bohrachse angeordnet sind. Bei der geneigten Anordnung sind die Krümmungsachsen der gebogenen Platten zur Bohrachse hin verkippt.A good centering function is achieved according to the invention in that the axes of curvature of the curved plates are arranged parallel or inclined to the drilling axis. In the inclined arrangement, the axes of curvature of the curved plates are tilted towards the drilling axis.
Bei einem Bohrwerkzeug mit einem Bohrgestänge, insbesondere einem Bohrrohr ist es erfindungsgemäß, dass an dem Bohrgestänge eine Bohrspitze der vorbeschriebenen Art angeordnet ist. Mit einem solchen Bohrwerkzeug kann insbesondere in zuverlässiger und kostengünstiger Weise ein Betonelement im Boden mit einer verlorenen Bohrspitze erstellt werden.In a drilling tool having a drill string, in particular a drill pipe, it is according to the invention that a drill bit of the type described above is arranged on the drill pipe. With such a drilling tool can be created in particular in a reliable and cost-effective manner, a concrete element in the ground with a lost drill bit.
Die Erfindung wird nachfolgend weiter anhand von bevorzugten Ausführungsbeispielen beschrieben, welche schematisch in den beigefügten Zeichnungen dargestellt sind. In den Zeichnungen zeigen:
- Fig. 1
- eine erste Seitenansicht einer erfindungsgemäßen Bohrspitze;
- Fig. 2
- eine um 90° gedrehte zweite Seitenansicht der Bohrspitze von
Fig. 1 ; - Fig. 3
- eine perspektivische Ansicht der Bohrspitze von
Fig. 1 ; - Fig. 4
- eine Draufsicht auf die Bohrspitze von
Fig. 1 von oben; - Fig. 5
- eine erste Seitenansicht einer weiteren erfindungsgemäßen Bohrspitze;
- Fig. 6
- eine um 90° gedrehte zweite Seitenansicht der Bohrspitze von
Fig. 5 ; und - Fig. 7
- eine Draufsicht auf die Bohrspitze von
Fig. 5 .
- Fig. 1
- a first side view of a drill bit according to the invention;
- Fig. 2
- a 90 ° rotated second side view of the drill bit of
Fig. 1 ; - Fig. 3
- a perspective view of the drill bit of
Fig. 1 ; - Fig. 4
- a top view of the drill bit of
Fig. 1 from above; - Fig. 5
- a first side view of another drill bit according to the invention;
- Fig. 6
- a 90 ° rotated second side view of the drill bit of
Fig. 5 ; and - Fig. 7
- a top view of the drill bit of
Fig. 5 ,
Das Ausführungsbeispiel einer erfindungsgemäßen Bohrspitze 10 gemäß den
Zur Bildung von Schneidwendeln sind zwei gebogene Platten 12 an der Grundplatte 20 und an dem Mittenelement 16 angeordnet. Die beiden gebogenen Platten 12 weisen eine trapezförmige Kontur auf, wie insbesondere aus
An dem Mittenelement 16 weisen die Platten 12 eine axiale Höhe auf, welche der Länge des Mittenelementes 16 entspricht. Die Höhe der Platten nimmt radial nach außen hin ab, so dass eine gewünschte Spitzenform erzeugt wird. Die eine Schneidkante bildende Randkante der Platten 12 verläuft etwa teilhelixförmig, was günstig für die Zentrier- und Spitzenfunktion ist. Dieser vorteilhafte Verlauf ergibt sich in einfacher Weise durch einen geraden, jedoch unter einem Schrägungswinkel geführten Schnitt in ein Rohr, aus welchem die Platten 12 gefertigt werden.At the
Durch die Anordnung des Mittenelementes 16 sind die beiden um 180° zueinander versetzten Platten 12 gegenüber der Bohrachse 14 leicht versetzt, wobei sich ein gewünschter turbinenartiger Verlauf der gebogenen Platten 12 ergibt, wie anschaulich aus
Der Außendurchmesser der runden Grundplatte 20 ist größer als der Außendurchmesser des hohlzylindrischen Rohrgrundkörpers 18. An zwei Seitenbereichen der Grundplatte 20 sind zum Bilden einer Formschlusseinrichtung 22 Ausnehmungen vorgesehen. Diese Ausnehmungen dienen zum lösbaren Verbinden der Bohrspitze 10 an einem nicht dargestellten Bohrgestänge, insbesondere einem hohlen Bohrrohr. Mittels der Formschlusseinrichtung 22, insbesondere der dadurch gebildeten radial vorstehenden Kanten, kann in einfacher Weise das Bohrdrehmoment von dem Bohrgestänge auf die Bohrspitze übertragen werden.Due to the arrangement of the
The outer diameter of the
Eine weitere Ausführungsform einer erfindungsgemäßen Bohrspitze 10 ist in den
Claims (7)
- Auger bit for an earth auger, comprising
a base plate (20)
at least two curved plates (12), which are fixed to the base plate (20) and which extend radially outwards from a drilling axis (14) and whose axial height decreases radially outwards, and
a central element (16), which is positioned coaxially to the drilling axis (14) on the base plate (20),
characterized in that
the plates (12) are segments of a cylindrical pipe and have the same radius of curvature, and
the plates (12) are adjacent to the central element (16) and
the central element (16) serves for the fixing of the curved plates (12). - Auger bit according to claim 1,
characterized in that
the plates (12) have approximately quarter circular arc-shaped segments with a triangular or trapezoidal contour. - Auger bit according to claim 1 or 2,
characterized in that
there are provided three or four plates (12) which are arranged with a uniform angular spacing to one another. - Auger bit according to any one of claims 1 to 4,
characterized in that
the axes of curvature of the curved plates (12) are arranged parallel or inclined to the drilling axis (14). - Auger bit according to any one of claims 1 to 4,
characterized in that
a pipe base body (18) is provided for fitting to a drilling rod. - Auger bit according to claim 1 to 5,
characterized in that
a positive locking device (22) for a detachable connection to a drilling rod is provided on the pipe base body (18) or base plate (20). - Drilling device with a drilling rod, particularly a drill pipe,
characterized in that
on the drilling rod is arranged an auger bit (10) according to any one of claims 1 to 6.
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PT06008686T PT1860274E (en) | 2006-04-26 | 2006-04-26 | Drill bit |
DE502006001030T DE502006001030D1 (en) | 2006-04-26 | 2006-04-26 | drill |
EP06008686A EP1860274B1 (en) | 2006-04-26 | 2006-04-26 | Drill bit |
AT06008686T ATE399926T1 (en) | 2006-04-26 | 2006-04-26 | DRILL TIP |
ES06008686T ES2308627T3 (en) | 2006-04-26 | 2006-04-26 | PERFORATION POINT. |
JP2007112475A JP4654215B2 (en) | 2006-04-26 | 2007-04-23 | Orabit |
US11/790,373 US7571781B2 (en) | 2006-04-26 | 2007-04-25 | Auger bit |
CNA2007101011018A CN101063402A (en) | 2006-04-26 | 2007-04-26 | Drill bit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06008686A EP1860274B1 (en) | 2006-04-26 | 2006-04-26 | Drill bit |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1860274A1 EP1860274A1 (en) | 2007-11-28 |
EP1860274B1 true EP1860274B1 (en) | 2008-07-02 |
Family
ID=37055759
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06008686A Not-in-force EP1860274B1 (en) | 2006-04-26 | 2006-04-26 | Drill bit |
Country Status (8)
Country | Link |
---|---|
US (1) | US7571781B2 (en) |
EP (1) | EP1860274B1 (en) |
JP (1) | JP4654215B2 (en) |
CN (1) | CN101063402A (en) |
AT (1) | ATE399926T1 (en) |
DE (1) | DE502006001030D1 (en) |
ES (1) | ES2308627T3 (en) |
PT (1) | PT1860274E (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2146046B1 (en) | 2008-07-15 | 2014-04-09 | Marti Gründungstechnik AG | Drill head for a drilling device for creating drill holes in insufficiently stable foundation |
US9416513B2 (en) * | 2013-10-25 | 2016-08-16 | Hubbell Incorporated | Helical screw pile and soil displacement device with curved blades |
US20160090792A1 (en) * | 2014-09-29 | 2016-03-31 | Bhupinder Grewal | Auger Blade |
USD768742S1 (en) * | 2014-10-26 | 2016-10-11 | Guy Charbonneau | Deicing blade |
US10458090B2 (en) | 2016-02-03 | 2019-10-29 | Hubbell Power Systems, Inc. | Soil displacement piles |
EP3216974B1 (en) * | 2016-03-10 | 2018-12-26 | Marti Gründungstechnik AG | Drill head for drilling equipment for formation of bores in soil with inferior stability |
WO2018165617A1 (en) | 2017-03-10 | 2018-09-13 | Hubbell Incorporated | Pile with soil displacement assembly |
US10337253B2 (en) | 2017-06-22 | 2019-07-02 | Marti Gründungstechnik Ag | Drill head for a drilling device for creating drill holes in insufficiently stable foundation |
USD1042567S1 (en) * | 2022-09-30 | 2024-09-17 | Rapala Vmc Oyj | Ice auger cap |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
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US569121A (en) * | 1896-10-06 | Foe pro | ||
US1776018A (en) * | 1927-11-14 | 1930-09-16 | Harry C Brown | Underreaming well-drilling bit |
US2190434A (en) * | 1937-09-20 | 1940-02-13 | Felix L Pivoto | Changeable blade drag bit |
US2285024A (en) * | 1939-08-11 | 1942-06-02 | John B Ferguson | Sample taking apparatus |
US2973821A (en) * | 1958-02-06 | 1961-03-07 | Stihl Andreas | Rotatable earth borer |
DE1263652C2 (en) * | 1966-08-27 | 1973-09-20 | Hibernia Ag | Drilling method and drilling head for producing bores, in particular large diameters, in minerals, preferably coal |
US3786876A (en) * | 1971-06-24 | 1974-01-22 | A Aaltonen | Ice auger |
US3763942A (en) * | 1972-02-25 | 1973-10-09 | Contracting & Material Co | Auger head |
US4252481A (en) * | 1979-06-21 | 1981-02-24 | Widder Corporation | Cutting tool |
DE3544433C2 (en) * | 1985-12-16 | 1995-12-14 | Hilti Ag | Rock drill |
DE8908131U1 (en) * | 1989-07-04 | 1990-10-31 | Delmag Maschinenfabrik Reinhold Dornfeld GmbH & Co, 7300 Esslingen | Head for an earth drill |
JPH0810517Y2 (en) * | 1989-10-25 | 1996-03-29 | 新日本製鐵株式会社 | Drill bit |
US5810517A (en) * | 1993-06-28 | 1998-09-22 | Monroe Cutting Tool Inc. | Rotary milling cutters |
DE19702137A1 (en) * | 1997-01-22 | 1998-07-23 | Fundex N V | Earth displacement drill |
IT1291804B1 (en) * | 1997-03-17 | 1999-01-21 | Miro Cesare Mati | EQUIPMENT FOR WORKING A LAND WITHOUT DEMOLITIVE EXCAVATIONS |
US6655476B2 (en) * | 2001-02-23 | 2003-12-02 | Timothy R. Wall | Earth boring bit |
JP2004003125A (en) * | 2002-03-28 | 2004-01-08 | Hiromi Kuwahata | Tip bit rotary embedding method and its device |
DE502004003756D1 (en) | 2004-03-26 | 2007-06-21 | Bauer Maschinen Gmbh | drill |
-
2006
- 2006-04-26 AT AT06008686T patent/ATE399926T1/en not_active IP Right Cessation
- 2006-04-26 ES ES06008686T patent/ES2308627T3/en active Active
- 2006-04-26 EP EP06008686A patent/EP1860274B1/en not_active Not-in-force
- 2006-04-26 PT PT06008686T patent/PT1860274E/en unknown
- 2006-04-26 DE DE502006001030T patent/DE502006001030D1/en not_active Expired - Fee Related
-
2007
- 2007-04-23 JP JP2007112475A patent/JP4654215B2/en not_active Expired - Fee Related
- 2007-04-25 US US11/790,373 patent/US7571781B2/en not_active Expired - Fee Related
- 2007-04-26 CN CNA2007101011018A patent/CN101063402A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
JP4654215B2 (en) | 2011-03-16 |
US7571781B2 (en) | 2009-08-11 |
US20080035385A1 (en) | 2008-02-14 |
ATE399926T1 (en) | 2008-07-15 |
ES2308627T3 (en) | 2008-12-01 |
JP2007291847A (en) | 2007-11-08 |
CN101063402A (en) | 2007-10-31 |
DE502006001030D1 (en) | 2008-08-14 |
PT1860274E (en) | 2008-07-31 |
EP1860274A1 (en) | 2007-11-28 |
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