EP1387923B1 - Drill bit - Google Patents

Drill bit Download PDF

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Publication number
EP1387923B1
EP1387923B1 EP02769438A EP02769438A EP1387923B1 EP 1387923 B1 EP1387923 B1 EP 1387923B1 EP 02769438 A EP02769438 A EP 02769438A EP 02769438 A EP02769438 A EP 02769438A EP 1387923 B1 EP1387923 B1 EP 1387923B1
Authority
EP
European Patent Office
Prior art keywords
drill bit
face
curved
cutters
straight
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
EP02769438A
Other languages
German (de)
French (fr)
Other versions
EP1387923A2 (en
Inventor
Herbert Papousek
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.)
Atlas Copco Mai GmbH
Original Assignee
Atlas Copco Mai 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 Atlas Copco Mai GmbH filed Critical Atlas Copco Mai GmbH
Priority to AT02769438T priority Critical patent/ATE328184T1/en
Priority to EP05010556A priority patent/EP1564365A3/en
Priority to SI200230387T priority patent/SI1387923T1/en
Publication of EP1387923A2 publication Critical patent/EP1387923A2/en
Application granted granted Critical
Publication of EP1387923B1 publication Critical patent/EP1387923B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/58—Chisel-type inserts
    • 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
    • E21B10/36—Percussion drill bits
    • 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
    • E21B10/36—Percussion drill bits
    • E21B10/38—Percussion drill bits characterised by conduits or nozzles for drilling fluids

Definitions

  • the invention relates to a drill bit having the features of the introductory part of claim 1.
  • Cutter bits in particular percussion or rotary percussion drill bits, which have cutters on their end face for releasing and / or crushing the material to be degraded, are known in various embodiments and are used, for example, at the front end of self-drilling injection drill anchors which are used to secure rock against rock pressures ,
  • a drill bit known from AT 001 513 U1 and the corresponding WO 97/19247 A has cutting edges on its end face which extend in at least two different, axial directions of the end face.
  • AT 001 513 U1 shows various combinations of cutting edges on the face of a drill bit, including a drill bit having a single curved cutting edge extending from one edge of the face of the drill bit across its center to the other edge.
  • the invention has the object of providing a drill bit of the type mentioned in such a way that produces a better efficiency of the drill bit by the shape and arrangement of the cutting and a denser attack pattern is obtained when this is used in the rotary-beating drilling.
  • Fig. 1 shows (schematically) the end face of a drill bit 1, in which two with respect to the direction of rotation oppositely curved cutting edges 2 are combined with a likewise starting from the center of the end face of the drill bit 1 straight cutting edge 2 ', so that in Fig. 1 right shown stop pattern results.
  • the straight edge 2 ' relative to the axis 4 of the drill bit 1 opposite to the region of the end face of the drill bit 1, in which the oppositely curved blades 2 are arranged.
  • the drill bit 1 has on its end face two oppositely curved blades 2 and two lying in a common axial plane of the drill bit 1, straight blades 2 '.
  • the drill bit 1 has a straight blade 2 ', which extends to the center (axis) of the drill bit, and two, only in the outer region of the drill bit 1, oppositely curved blades 2, which are not diametrically opposed to each other but in which the straight cutting edge 2 'opposite half of the end face of the drill bit 1 are arranged.
  • the curved cutting edges 2 extend both in the embodiment shown in FIG. 3 and in the embodiment shown in FIG. 4 up to a recess 20 which is arranged in the end face of the drill bit 1 and concentric with the axis 4 of the drill bit 1, for example circular.
  • a drill bit 1 In the embodiment of a drill bit 1 according to the invention shown in Fig. 4 are two diametrically opposed, straight blades 2 ', ie straight cutting, which lie in an axial plane of the drill bit 1, and two diametrically opposed, oppositely curved blades 2, from the outer edge the end face of the drill bit 1 to reach the recess 20, provided.
  • FIGS. 5 to 7 The embodiment of a drill bit 1 according to the invention shown in FIGS. 5 to 7 has an arrangement of the curved cutting edges 2 (with cutting edges 3) and the straight cutting edge 2 '(with cutting edge 3') which corresponds to FIG. Impact drilling results in the Fig. 1 right shown stop pattern.
  • a from the end face opposite the end of the drill bit 1 outgoing blind hole 5 is provided which carries an internal thread, via which the drill bit 1 on an externally threaded anchor rod, as used for Injetationsbohranker, can be screwed.
  • the blind hole 5 From the blind hole 5 go in the illustrated embodiment, three channels 10, which are inclined to the axis 4 of the drill bit 1 at an acute angle, for example, an angle of 30 °.
  • the channels 10 are aligned in the drill bit 1 so that their mouths 11 open on the side surface of the drill bit 1 in each case in the region between two adjacent cutting edges 2.
  • the outgoing from the blind hole 5 of the drill bit 1 channels 10 are aligned so that they are inclined to the end face of the drill bit 1.
  • the mouths 11 of the channels 10 may also be arranged eccentrically to the concave curved surfaces 12, wherein the mouths 11 of the channels 10 in the direction of rotation of the drill bit 1 forward portion of the surfaces 12 may be arranged.

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  • 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)
  • Drilling Tools (AREA)
  • Earth Drilling (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Description

Die Erfindung betrifft eine Bohrkrone mit den Merkmalen des einleitenden Teils von Anspruch 1.The invention relates to a drill bit having the features of the introductory part of claim 1.

Bohrkronen, insbesondere Schlag- oder Drehschlagbohrkronen, die an ihrer Stirnfläche Schneiden zum Lösen und/oder Zerkleinern des abzubauenden Materials aufweisen, sind in verschiedenen Ausführungsformen bekannt, und werden beispielsweise am vorderen Ende von selbstbohrenden Injektionsbohrankern verwendet, die zum Sichern von Gestein gegen Gebirgsdrücke gesetzt werden.Cutter bits, in particular percussion or rotary percussion drill bits, which have cutters on their end face for releasing and / or crushing the material to be degraded, are known in various embodiments and are used, for example, at the front end of self-drilling injection drill anchors which are used to secure rock against rock pressures ,

Eine aus der AT 001 513 U1 und der dieser entsprechenden WO 97/19247 A bekannte Bohrkrone besitzt an ihrer Stirnfläche Schneiden, die in wenigstens zwei unterschiedlichen, axialen Richtungen der Stirnfläche verlaufen. Die AT 001 513 U1 zeigt verschiedene Kombinationen von Schneiden an der Stirnfläche einer Bohrkrone, darunter auch eine Bohrkrone mit einer einzigen gekrümmten Schneide, die sich von einem Rand der Stirnfläche der Bohrkrone über deren Zentrum zum anderen Rand hin, erstreckt.A drill bit known from AT 001 513 U1 and the corresponding WO 97/19247 A has cutting edges on its end face which extend in at least two different, axial directions of the end face. AT 001 513 U1 shows various combinations of cutting edges on the face of a drill bit, including a drill bit having a single curved cutting edge extending from one edge of the face of the drill bit across its center to the other edge.

Eine Bohrkrone mit an ihrer Stirnfläche angeordneten, geraden und gekrümmten Schneiden zum Lösen und/oder Zerkleinern von abzubauendem Material, wobei eine gerade Schneide in dem Bereich der Stirnfläche der Bohrkrone angeordnet ist, die dem Bereich der Stirnfläche der Bohrkrone, in dem die gekrümmte Schneide angeordnet ist, diametral gegenüberliegt, und wobei die gekrümmte Schneide so gekrümmt ist, dass ihre konkave Seite auf den Bereich der Stirnfläche der Bohrkrone hinweist, in dem die gerade Schneide angeordnet ist, ist aus der DE 918 741 A bekannt. Die Fig. 14 der DE 918 741 A zeigt eine Bohrkronen mit an ihrer Stirnfläche angeordneten Schneiden zum Lösen und/oder Zerkleinern von abzubauendem Material, mit einer geraden Schneide und mit einer über die ganze Stirnfläche der Bohrkrone durchgehenden, gekrümmten Schneide, wobei sich die gerade Schneide über den Durchstoßpunkt der Achse der Bohrkrone durch die Stirnfläche derselben hinaus erstreckt. Bei dieser Ausführungsform der bekannten Bohrkrone ist eine einzige gekrümmte Schneide, die sich kontinuierlich gekrümmt über die gesamte Stirnfläche der Bohrkrone durchgehend erstreckt, vorgesehen.A drill bit with straight and curved cutting blades arranged at its end face for releasing and / or shredding material to be degraded, wherein a straight cutting edge is arranged in the region of the end face of the drill bit, which is the area of the end face of the drill bit in which the curved cutting edge is located is diametrically opposed, and wherein the curved cutting edge is curved so that its concave side points to the region of the end face of the drill bit in which the straight cutting edge is arranged, is known from DE 918 741 A. Fig. 14 of DE 918 741 A shows a drill bits with arranged on their face cutting for loosening and / or crushing material to be degraded, with a straight edge and with a continuous over the entire face of the drill bit, curved cutting edge, wherein the straight Cutting edge extends beyond the piercing point of the axis of the drill bit through the end face thereof. In this embodiment of the known drill bit a single curved cutting edge, which extends continuously curved over the entire end face of the drill bit, is provided.

Der Erfindung liegt die Aufgabe zugrunde, eine Bohrkrone der eingangs genannten Gattung derart weiterzubilden, dass durch Form und Anordnung der Schneiden eine bessere Wirksamkeit der Bohrkrone erzeugt und ein dichteres Anschlagbild erhalten wird, wenn diese beim dreh-schlagenden Bohren eingesetzt wird.The invention has the object of providing a drill bit of the type mentioned in such a way that produces a better efficiency of the drill bit by the shape and arrangement of the cutting and a denser attack pattern is obtained when this is used in the rotary-beating drilling.

Gelöst wird diese Aufgabe erfindungsgemäß mit einer Bohrkrone, welche die Merkmale des Anspruches 1 aufweist.This object is achieved according to the invention with a drill bit, which has the features of claim 1.

Bevorzugte und vorteilhafte Ausgestaltungen der erfindungsgemäßen Bohrkrone sind Gegenstand der Unteransprüche.Preferred and advantageous embodiments of the drill bit according to the invention are the subject of the dependent claims.

Durch die bei der erfindungsgemäßen Bohrkrone vorgesehene Anordnung der an ihrer Stirnfläche vorgesehenen geraden Schneide und der gegensinnig gekrümmten Schneiden, ergibt sich die angestrebte, gegenüber den bekannten Bohrkronen verbesserte Wirksamkeit der erfindungsgemäßen Bohrkrone.By provided in the drill bit according to the invention arrangement of the provided on its end face straight cutting edge and the oppositely curved cutting results in the desired, compared to the known drill bits improved effectiveness of the drill bit according to the invention.

Weitere Merkmale, Einzelheiten und Vorteile der erfindungsgemäßen Bohrkrone ergeben sich aus der nachstehenden Beschreibung von Bohrkronen gemäß der Erfindung.Further features, details and advantages of the drill bit according to the invention will become apparent from the following description of drill bits according to the invention.

Es zeigen:

  • die Fig. 1 bis 4 schematisch die Anordnung und Form von Schneiden, jeweils mit zugeordnetem Anschlagbild von Ausführungsformen der erfindungsgemäßen Bohrkrone und
  • die Fig. 5 bis 7 in verschiedenen Ansichten eine Bohrkrone mit einer Anordnung der Schneiden gemäß Fig. 1.
Show it:
  • Figures 1 to 4 show schematically the arrangement and shape of cutting, each with associated stop pattern of embodiments of the drill bit according to the invention and
  • 5 to 7 in various views, a drill bit with an arrangement of the cutting edges of FIG .. 1

Fig. 1 zeigt (schematisch) die Stirnfläche einer Bohrkrone 1, bei der zwei bezogen auf die Drehrichtung entgegengesetzt gekrümmte Schneiden 2 mit einer ebenfalls vom Zentrum der Stirnfläche der Bohrkrone 1 ausgehenden geraden Schneide 2' kombiniert sind, sodass sich das in Fig. 1 rechts gezeigte Anschlagbild ergibt. In der in Fig. 1 gezeigten Ausführungsform liegt die gerade Schneide 2' bezogen auf die Achse 4 der Bohrkrone 1 dem Bereich der Stirnfläche der Bohrkrone 1 gegenüber, in dem die gegensinnig gekrümmten Schneiden 2 angeordnet sind.Fig. 1 shows (schematically) the end face of a drill bit 1, in which two with respect to the direction of rotation oppositely curved cutting edges 2 are combined with a likewise starting from the center of the end face of the drill bit 1 straight cutting edge 2 ', so that in Fig. 1 right shown stop pattern results. In the embodiment shown in Fig. 1, the straight edge 2 'relative to the axis 4 of the drill bit 1 opposite to the region of the end face of the drill bit 1, in which the oppositely curved blades 2 are arranged.

Bei der in Fig. 2 gezeigten Ausführungsform besitzt die Bohrkrone 1 an ihrer Stirnfläche zwei gegensinnig gekrümmte Schneiden 2 und zwei in einer gemeinsamen Axialebene der Bohrkrone 1 liegende, gerade Schneiden 2'.In the embodiment shown in Fig. 2, the drill bit 1 has on its end face two oppositely curved blades 2 and two lying in a common axial plane of the drill bit 1, straight blades 2 '.

Bei der in Fig. 3 gezeigten Ausführungsform besitzt die Bohrkrone 1 eine gerade Schneide 2', die bis zur Mitte (Achse) der Bohrkrone reicht, und zwei lediglich im äußeren Bereich der Bohrkrone 1 angeordnete, gegensinnig gekrümmte Schneiden 2, die einander nicht diametral gegenüberliegen, sondern in der der geraden Schneide 2' gegenüberliegenden Hälfte der Stirnfläche der Bohrkrone 1 angeordnet sind.In the embodiment shown in Fig. 3, the drill bit 1 has a straight blade 2 ', which extends to the center (axis) of the drill bit, and two, only in the outer region of the drill bit 1, oppositely curved blades 2, which are not diametrically opposed to each other but in which the straight cutting edge 2 'opposite half of the end face of the drill bit 1 are arranged.

Die gekrümmten Schneiden 2 reichen sowohl bei der in Fig. 3 als auch bei der in Fig. 4 gezeigten Ausführungsform bis zu einer in der Stirnfläche der Bohrkrone 1 angeordneten und zur Achse 4 der Bohrkrone 1 konzentrischen, beispielsweise kreisförmigen, Vertiefung 20.The curved cutting edges 2 extend both in the embodiment shown in FIG. 3 and in the embodiment shown in FIG. 4 up to a recess 20 which is arranged in the end face of the drill bit 1 and concentric with the axis 4 of the drill bit 1, for example circular.

Bei der in Fig. 4 gezeigten Ausführungsform einer erfindungsgemäßen Bohrkrone 1 sind zwei einander diametral gegenüberliegende, gerade Schneiden 2', also gerade Schneiden, die in einer Axialebene der Bohrkrone 1 liegen, und zwei einander diametral gegenüberliegende, gegensinnig gekrümmte Schneiden 2, die vom Außenrand der Stirnfläche der Bohrkrone 1 bis zu der Vertiefung 20 reichen, vorgesehen.In the embodiment of a drill bit 1 according to the invention shown in Fig. 4 are two diametrically opposed, straight blades 2 ', ie straight cutting, which lie in an axial plane of the drill bit 1, and two diametrically opposed, oppositely curved blades 2, from the outer edge the end face of the drill bit 1 to reach the recess 20, provided.

Die in den Fig. 5 bis 7 gezeigte Ausführungsform einer erfindungsgemäßen Bohrkrone 1 besitzt eine Anordnung der gekrümmten Schneiden 2 (mit Schneidkanten 3) und der geraden Schneide 2' (mit Schneidkante 3'), die Fig. 1 entspricht und bei Verwendung zum Dreh-Schlagbohren das in Fig. 1 rechts gezeigt Anschlagbild ergibt.The embodiment of a drill bit 1 according to the invention shown in FIGS. 5 to 7 has an arrangement of the curved cutting edges 2 (with cutting edges 3) and the straight cutting edge 2 '(with cutting edge 3') which corresponds to FIG. Impact drilling results in the Fig. 1 right shown stop pattern.

In der Bohrkrone 1 ist ein, von dem der Stirnfläche gegenüberliegenden Ende der Bohrkrone 1 ausgehendes Sackloch 5 vorgesehen, das ein Innengewinde trägt, über das die Bohrkrone 1 auf eine mit Außengewinde versehene Ankerstange, wie sie für Injektionsbohranker verwendet wird, geschraubt werden kann. Von dem Sackloch 5 gehen im gezeigten Ausführungsbeispiel drei Kanäle 10 aus, die zur Achse 4 der Bohrkrone 1 unter einem spitzen Winkel, beispielsweise einem Winkel von 30 °, geneigt sind. Die Kanäle 10 sind in der Bohrkrone 1 so ausgerichtet, dass ihre Mündungen 11 an der Seitenfläche der Bohrkrone 1 jeweils im Bereich zwischen zwei benachbarten Schneiden 2 münden.In the drill bit 1, a, from the end face opposite the end of the drill bit 1 outgoing blind hole 5 is provided which carries an internal thread, via which the drill bit 1 on an externally threaded anchor rod, as used for Injektionsbohranker, can be screwed. From the blind hole 5 go in the illustrated embodiment, three channels 10, which are inclined to the axis 4 of the drill bit 1 at an acute angle, for example, an angle of 30 °. The channels 10 are aligned in the drill bit 1 so that their mouths 11 open on the side surface of the drill bit 1 in each case in the region between two adjacent cutting edges 2.

Dabei liegen die Mündungen 11 der Kanäle 10, wie dies die Fig. 5 und 6 zeigen, im Bereich konkav gekrümmter Flächen 12, die zur von den Schneidkanten 3 definierten Ebene, also im Wesentlichen zur Stirnfläche der Bohrkrone 1 annähernd normal stehen.Here are the mouths 11 of the channels 10, as shown in FIGS. 5 and 6, in the region of concave curved surfaces 12, which are approximately normal to the plane defined by the cutting edges 3, ie substantially to the end face of the drill bit 1.

Die vom Sackloch 5 der Bohrkrone 1 ausgehenden Kanäle 10 sind so ausgerichtet, dass sie zur Stirnfläche der Bohrkrone 1 hin geneigt sind. Die Mündungen 11 der Kanäle 10 können zu den konkav gekrümmten Flächen 12 auch außermittig angeordnet sein, wobei die Mündungen 11 der Kanäle 10 in dem in Drehrichtung der Bohrkrone 1 vorne liegenden Abschnitt der Flächen 12, angeordnet sein können.The outgoing from the blind hole 5 of the drill bit 1 channels 10 are aligned so that they are inclined to the end face of the drill bit 1. The mouths 11 of the channels 10 may also be arranged eccentrically to the concave curved surfaces 12, wherein the mouths 11 of the channels 10 in the direction of rotation of the drill bit 1 forward portion of the surfaces 12 may be arranged.

Claims (7)

  1. Drill bit (1) with straight and curved cutters (2', 2) which are located on its face for removing and/or crushing the material to be worked, whereby a straight cutter (2') being located in the area of the face of the drill bit (1) which is diametrically opposite to the area of the face of the drill bit (1) in which the curved cutter (2) is located and whereby the curved cutter (2) is curved such that its concave side points toward the area of the face of the drill bit (1) in which the straight cutter (2') is located, characterized in that an additional curved cutter (2) is provided, that the curved cutters (2) are located opposite to each other, that the curved cutters (2) are curved in opposite directions with reference to the direction of rotation, and that the straight cutter (2') and the cutters (2) curved in opposite directions are arranged essentially Y-shaped, whereby the straight cutter (2') is located symmetrically to the cutters (2) curved in opposite directions.
  2. Drill bit according to claim 1, characterized in that the straight cutters and cutters (2, 2') curved in opposite directions,have essentially the same angular intervals from one another.
  3. Drill bit according to claim 1 or 2, characterized in that the cutters (2) curved in opposite directions and the straight cutter (2') extend from the intersection point of the axis (4) of the drill bit (1) through its face.
  4. Drill bit according to claim 1 or 2, characterized in that the cutters (2) curved in opposite directions extend from the point of intersection of the axis (4) of the drill bit (1) through its face and that the straight cutter (2') extends beyond the point of intersection of the axis (4) of drill bit (1) through the face thereof and is designed continously over the face of the drill bit (1).
  5. Drill bit according to claim 1 or 2, characterized in that in the face of the drill bit (1) there is a circular depression (20) which is concentric to the axis (4) of the drill bit (1), and wherein the two cutters (2) curved in opposite directions are provided only in the area outside of the circular depression (20).
  6. Drill bit according to claim 5, characterized in that the straight cutter (2') ends within the depression (20) in the point of intersection of axis (4) of the drill bit (1) through its face.
  7. Drill bit according to claim 5, characterized in that the srtaight cutter (2') extends beyond the point of intersection of axis (4) of the drill bit (1) through its face and is designed continuosly over the face of drill bit (1).
EP02769438A 2001-05-17 2002-05-16 Drill bit Expired - Lifetime EP1387923B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT02769438T ATE328184T1 (en) 2001-05-17 2002-05-16 DRILL BIT
EP05010556A EP1564365A3 (en) 2001-05-17 2002-05-16 Drill bit
SI200230387T SI1387923T1 (en) 2001-05-17 2002-05-16 Drill bit

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT7892001 2001-05-17
AT7892001 2001-05-17
PCT/AT2002/000149 WO2002092957A2 (en) 2001-05-17 2002-05-16 Drill bit

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP05010556A Division EP1564365A3 (en) 2001-05-17 2002-05-16 Drill bit
EP05005935 Division 2005-03-18

Publications (2)

Publication Number Publication Date
EP1387923A2 EP1387923A2 (en) 2004-02-11
EP1387923B1 true EP1387923B1 (en) 2006-05-31

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Application Number Title Priority Date Filing Date
EP02769438A Expired - Lifetime EP1387923B1 (en) 2001-05-17 2002-05-16 Drill bit
EP05010556A Withdrawn EP1564365A3 (en) 2001-05-17 2002-05-16 Drill bit

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP05010556A Withdrawn EP1564365A3 (en) 2001-05-17 2002-05-16 Drill bit

Country Status (12)

Country Link
US (2) US7070010B2 (en)
EP (2) EP1387923B1 (en)
JP (1) JP3961959B2 (en)
CN (2) CN1982646A (en)
CA (1) CA2447223C (en)
CZ (1) CZ20033075A3 (en)
DE (1) DE50207010D1 (en)
DK (1) DK1387923T3 (en)
ES (1) ES2263815T3 (en)
PL (1) PL197413B1 (en)
PT (1) PT1387923E (en)
WO (1) WO2002092957A2 (en)

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US8360990B2 (en) * 2004-12-16 2013-01-29 Senorx, Inc. Biopsy device with aperture orientation and improved tip
JP4809711B2 (en) * 2006-03-22 2011-11-09 日本プロジェクト株式会社 Drill
US7905164B2 (en) * 2008-09-18 2011-03-15 Combined Products Co. #1 Inc. Adjustable one way screw remover
US7861807B2 (en) * 2008-12-03 2011-01-04 Black & Decker Inc. Drill bit including one piece cutting head
FR3004746B1 (en) * 2013-04-19 2015-05-15 Diager CUTTING PLATE
FI126596B (en) * 2014-01-20 2017-02-28 Lehti Group Oy dRILL BIT
US9572631B2 (en) * 2014-03-05 2017-02-21 Form And Function Dental Services, P.C. Asymmetrical dental tool with cooling channels
EP3421163A1 (en) * 2017-06-27 2019-01-02 HILTI Aktiengesellschaft Drill for chiselling rock
CN108868618B (en) * 2018-08-03 2023-12-12 洛阳中岩工程材料有限公司 Cast anchoring drill bit convenient for efficient production
US11948700B2 (en) 2020-11-11 2024-04-02 Grant Charters In-situ method of drilling to collect dry samples from a nuclear reactor core interior for analysis

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Publication number Publication date
ES2263815T3 (en) 2006-12-16
CN1982646A (en) 2007-06-20
PL197413B1 (en) 2008-03-31
CZ20033075A3 (en) 2004-03-17
EP1387923A2 (en) 2004-02-11
CN1608166A (en) 2005-04-20
DK1387923T3 (en) 2006-09-18
PT1387923E (en) 2006-09-29
WO2002092957A2 (en) 2002-11-21
US7070010B2 (en) 2006-07-04
US7231992B2 (en) 2007-06-19
PL366519A1 (en) 2005-02-07
CA2447223A1 (en) 2002-11-21
EP1564365A2 (en) 2005-08-17
JP3961959B2 (en) 2007-08-22
US20060032676A1 (en) 2006-02-16
EP1564365A3 (en) 2007-05-02
DE50207010D1 (en) 2006-07-06
CA2447223C (en) 2008-04-01
JP2004529280A (en) 2004-09-24
WO2002092957A3 (en) 2003-04-17
US20040134688A1 (en) 2004-07-15

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