EP0399164A1 - Driving device for bolts anchored by impact with open out sleeve - Google Patents

Driving device for bolts anchored by impact with open out sleeve Download PDF

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Publication number
EP0399164A1
EP0399164A1 EP90105523A EP90105523A EP0399164A1 EP 0399164 A1 EP0399164 A1 EP 0399164A1 EP 90105523 A EP90105523 A EP 90105523A EP 90105523 A EP90105523 A EP 90105523A EP 0399164 A1 EP0399164 A1 EP 0399164A1
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EP
European Patent Office
Prior art keywords
sleeve
drill
driving device
driving
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.)
Withdrawn
Application number
EP90105523A
Other languages
German (de)
French (fr)
Inventor
H.C. Artur. Prof.-Dr. Fischer
Günter Dipl.-Ing. Seibold
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.)
Fischerwerke Artur Fischer GmbH and Co KG
Original Assignee
Fischerwerke Artur Fischer GmbH and Co KG
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 Fischerwerke Artur Fischer GmbH and Co KG filed Critical Fischerwerke Artur Fischer GmbH and Co KG
Publication of EP0399164A1 publication Critical patent/EP0399164A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/005—Attachments or adapters placed between tool and hammer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00—Chucks or sockets
    • Y10T279/34—Accessory or component
    • Y10T279/3406—Adapter
    • Y10T279/3418—Adapter for particular tool or workpiece
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/96—Miscellaneous

Definitions

  • the invention relates to a driving device for fastening anchors with an expanding and threaded sleeve according to the preamble of the main claim.
  • Such impact devices can be used for impact anchors with an expansion sleeve, the expansion sleeve being driven onto an expansion body.
  • the impact anchor is used for this purpose in a borehole with an undercut, so that its expansion body comes to rest on the bottom of the borehole. In this position, the expansion sleeve can be driven onto the expansion body by means of an impact tool attached to the free end of the expansion sleeve, the expansion sleeve spreading and engaging in a form-fitting manner in the undercut of the borehole.
  • the invention has for its object to provide a driving device which can be clamped into a drill receptacle of an impact drill or the like and which is simple in construction and ensures optimum transmission of the rotary impact force.
  • the drive-in device which essentially consists of a drill and a sleeve-shaped drive-in part, transmits the rotary impacts generated by a hammer drill over the drill shaft to a stop disc mounted on the drill shaft, against which the sleeve of the drive-in part rests.
  • the stop disc is supported on the drill shaft trained covenant.
  • two opposing indentations are formed on the sleeve of the driving-in part, which engage in the drilling dust grooves provided on the drill shaft and thus ensure that the driving-in part rotates as well.
  • the bolt attachment located on the sleeve and opposite the sleeve opening ensures optimal transmission of the rotary impact force generated by the rotary hammer to the threaded sleeve anchoring the expansion sleeve, this effect being supported in that the stud formed on the sleeve attachment is circulated by a shoulder having a ring gear.
  • the indentations provided on the sleeve for torque transmission are arranged in this area in the area in which the drill with the largest diameter of its curvature and the drill dust grooves arranged on the drill shaft lie comes because in this area the most effective way to ensure torque transmission.
  • the depth stop which ensures that the drilling dust grooves snap into the indentations in this area, is formed by the stop disc resting on the collar of the drilling shaft.
  • the driving-in device consists of a drill 1, a driving-in part 2, a stop disk 3 and a pot-shaped stop element 4, which overlaps the stop disk 3 lying on the collar 5 of the drill shaft 6 and part of the sleeve 7. If the drill 1 is inserted into the sleeve 7 of the driving-in part 2 as far as the stop disk 3 forming the depth stop, the drilling dust groove 8 engages in the indentations 10 provided on the sleeve 7 in the region of the curvature 9 of the drill 1. The mutually opposite indentations 10 are offset from one another in accordance with the course of the drilling dust groove 8 of the drill 1.
  • the indentations 10 secure the drill 1 from spinning in the driving part 2 and at the same time ensure transmission of the torque to the driving part 2.
  • the drill plate 11 located on the drill 1 does not come into contact with the sleeve 7 or the sleeve base 12. Nevertheless, a transmission of the rotary impact force generated by the hammer drill, which cannot be seen from the drawing, via the stop disk 3 to the sleeve 7 is ensured.
  • This rotational impact force is transmitted to the threaded sleeve 14 by the pin extension 13 located in the area of the sleeve base 12, which in turn pushes the expansion sleeve 17 onto the conical pin 18.
  • the optimal transmission of the torque is ensured in that there is a bolt 15 on the bolt attachment, which is encircled by a shoulder having a ring gear 16.
  • the toothing of the ring gear 16 engages in a corresponding inner shoulder of the threaded sleeve 14 and thereby ensures an optimal transfer of the rotary impact force generated by the hammer drill to the threaded sleeve 14.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Piles And Underground Anchors (AREA)
  • Dowels (AREA)

Abstract

Driving devices are used for driving the open-out sleeve (17) of impact anchor bolts on to the open-out cone (18) of the impact anchor bolts (14). <??>To obtain a simple driving device which is capable of being clamped in a hammer drill and guarantees optimal transmission of the rotary impact force generated by the hammer drill to the threaded sleeve, use is made of a drill with a stop disc (3) which is mounted on the drilling shank and is supported via a sleeve-shaped driving part (2) which has, at the front, a bolt attachment (13) on which a toothed ring (16) is arranged. <IMAGE>

Description

Die Erfindung betrifft eine Eintreibvorrichtung für Be­festigungsanker mit Spreiz- und Gewindehülse gemäß der Gattung des Hauptanspruchs.The invention relates to a driving device for fastening anchors with an expanding and threaded sleeve according to the preamble of the main claim.

Derartige Einschlagvorrichtungen sind für Einschlagan­ker mit Spreizhülse verwendbar, wobei die Spreizhülse auf einen Spreizkörper aufgetrieben wird. Der Ein­schlaganker wird zu diesem Zweck in ein Bohrloch mit Hinterschneidung eingesetzt, so daß sein Spreizkörper am Bohrlochgrund zur Anlage kommt. Mittels eines am freien Ende der Spreizhülse aufgesetzten Einschlagwerk­zeugs kann die Spreizhülse in dieser Position auf den Spreizkörper aufgetrieben werden, wobei die Spreizhülse aufgespreizt und formschlüssig in die Hinterschneidung­des Bohrlochs eingreift.Such impact devices can be used for impact anchors with an expansion sleeve, the expansion sleeve being driven onto an expansion body. The impact anchor is used for this purpose in a borehole with an undercut, so that its expansion body comes to rest on the bottom of the borehole. In this position, the expansion sleeve can be driven onto the expansion body by means of an impact tool attached to the free end of the expansion sleeve, the expansion sleeve spreading and engaging in a form-fitting manner in the undercut of the borehole.

Der Erfindung liegt die Aufgabe zugrunde, eine in eine Bohreraufnahme einer Schlagbohrmaschine oder derglei­chen einspannbare Eintreibvorrichtung zu schaffen, die einfach aufgebaut ist und eine optimale Übertragung der Drehschlagkraft gewährleistet.The invention has for its object to provide a driving device which can be clamped into a drill receptacle of an impact drill or the like and which is simple in construction and ensures optimum transmission of the rotary impact force.

Die Lösung dieser Aufgabe wird durch die im Hauptan­spruch angegebenen Merkmale erhalten. Die Eintreib­vorrichtung, die im wesentlichen aus einem Bohrer und einem hülsenförmigen Eintreibteil besteht, überträgt die von einem Bohrhammer erzeugten Drehschläge über den Bohrschaft auf eine am Bohrschaft gelagerte Anschlag­scheibe, an der die Hülse des Eintreibteils anliegt. Die Anschlagscheibe stützt sich an einem am Bohrschaft ausgebildeten Bund ab. Zur Übertragung des Drehmoments des Bohrers auf das Eintreibteil sind an der Hülse des­Eintreibteils zwei sich gegenüberliegende Eindellungen ausgebildet, die in die am Bohrschaft vorhandenen Bohr­mehlnuten eingreifen und damit das Mitdrehen des Ein­treibteils gewährleisten. Der an der Hülse befind­liche, der Hülsenöffnung gegenüberliegende Bolzenauf­satz sichert eine optimale Übertragung der durch den­Bohrhammer erzeugten Drehschlagkraft auf die die Spreizhülse verankernde Gewindehülse, wobei diese Wir­kung dadurch unterstützt wird, daß der am Hülsenaufsatz ausgebildete Bolzen von einem einen Zahnkranz aufwei­senden Absatz umlaufen wird.This object is achieved by the features specified in the main claim. The drive-in device, which essentially consists of a drill and a sleeve-shaped drive-in part, transmits the rotary impacts generated by a hammer drill over the drill shaft to a stop disc mounted on the drill shaft, against which the sleeve of the drive-in part rests. The stop disc is supported on the drill shaft trained covenant. To transfer the torque of the drill to the driving-in part, two opposing indentations are formed on the sleeve of the driving-in part, which engage in the drilling dust grooves provided on the drill shaft and thus ensure that the driving-in part rotates as well. The bolt attachment located on the sleeve and opposite the sleeve opening ensures optimal transmission of the rotary impact force generated by the rotary hammer to the threaded sleeve anchoring the expansion sleeve, this effect being supported in that the stud formed on the sleeve attachment is circulated by a shoulder having a ring gear.

Dadurch, daß zwischen der das Bohrplättchen aufweisen­den Stirnseite des Bohrers und dem Hülsengrund ein Zwi­schenraum verbleibt, kommt das Bohrplättchen mit dem Eintreibteil nicht in Berührung, wodurch während des Eintreibvorganges sowohl eine Beanspruchung des Bohr­plättchens als auch der Hülse vermieden werden kann, ohne daß damit eine Verminderung der Übertragung der durch den Bohrhammer erzeugten Drehschlagkraft verbun­den wäre.Characterized in that a space remains between the end face of the drill having the drill bit and the sleeve base, the drill bit does not come into contact with the drive-in part, as a result of which both a stress on the drill bit and the sleeve can be avoided during the drive-in process, without a reduction the transmission of the rotary impact force generated by the rotary hammer would be connected.

Da insbesondere zur Erstellung hinterschnittener Bohr­löcher ein mit einer Wölbung versehener Bohrschaft ver­wendet wird, sind die an der Hülse zur Drehmomentüber­tragung vorgesehenen Eindellungen für diesen Fall in dem Bereich angeordnet, in dem der Bohrer mit dem größ­ten Durchmesser seiner Wölbung sowie der am Bohrschaft angeordneten Bohrmehlnuten zu liegen kommt, da in die­sem Bereich die Drehmomentübertragung am effektivsten zu gewährleisten ist. Der Tiefenanschlag, der ein Ein­rasten der Bohrmehlnuten in die Eindellungen in diesem Bereich sicherstellt, wird durch die am Bund des Bohr­schaftes anliegende Anschlagscheibe gebildet.Since a drill shaft provided with a curvature is used in particular to produce undercut boreholes, the indentations provided on the sleeve for torque transmission are arranged in this area in the area in which the drill with the largest diameter of its curvature and the drill dust grooves arranged on the drill shaft lie comes because in this area the most effective way to ensure torque transmission. The depth stop, which ensures that the drilling dust grooves snap into the indentations in this area, is formed by the stop disc resting on the collar of the drilling shaft.

Die Erfindung wird nachfolgend anhand der Zeichnung, die ein Ausführungsbeispiel einer Eintreibvorrichtung zeigt, näher erläutert.The invention is explained in more detail below with reference to the drawing, which shows an embodiment of a driving device.

Die Eintreibvorrichtung besteht aus einem Bohrer 1, ei­nem Eintreibteil 2, einer Anschlagscheibe 3 sowie einem topfförmigen Anschlagelement 4, das die am Bund 5 des Bohrschaftes 6 anliegende Anschlagscheibe 3 sowie einen Teil der Hülse 7 übergreift. Ist der Bohrer 1 bis zu der den Tiefenanschlag bildenden Anschlagscheibe 3 in die Hülse 7 des Eintreibteils 2 eingeführt, so greift die Bohrmehlnut 8 im Bereich der Wölbung 9 des Bohrers 1 in an der Hülse 7 vorgesehene Eindellungen 10 ein. Die einander gegenüberliegenden Eindellungen 10 sind entsprechend des Verlaufs der Bohrmehlnut 8 des Boh­rers 1 versetzt zueinander. Die Eindellungen 10 sichern den Bohrer 1 vor einem Durchdrehen im Eintreib­teil 2 und gewährleisten gleichzeitig eine Übertragung des Drehmoments auf das Eintreibteil 2. Das am Bohrer 1 befindliche Bohrplättchen 11 kommt mit der Hülse 7 so­wie dem Hülsengrund 12 nicht in Berührung. Trotzdem ist eine Übertragung der durch den aus der Zeichnung nicht ersichtlichen Bohrhammer erzeugten Drehschlagkraft über die Anschlagscheibe 3 auf die Hülse 7 gewährleistet. Diese Drehschlagkraft wird durch den im Bereich des Hülsengrunds 12 liegenden Bolzenansatz 13 auf die Ge­windehülse 14 übertragen, die ihrerseits die Spreizhül­se 17 auf den Konusbolzen 18 aufschiebt. Die optimale Übertragung des Drehmomentes ist dabei dadurch gewährleistet, daß sich am Bolzenaufsatz ein Bolzen 15 befindet, der von einem einen Zahnkranz 16 aufweisenden Absatz umlaufen wird. Die Zahnung des Zahnkranzes 16 greift in einen entsprechenden Innenabsatz der Gewinde­hülse 14 ein und sichert dadurch eine optimale Übertrag der durch den Bohrhammer erzeugten Drehschlagkraft auf die Gewindehülse 14.The driving-in device consists of a drill 1, a driving-in part 2, a stop disk 3 and a pot-shaped stop element 4, which overlaps the stop disk 3 lying on the collar 5 of the drill shaft 6 and part of the sleeve 7. If the drill 1 is inserted into the sleeve 7 of the driving-in part 2 as far as the stop disk 3 forming the depth stop, the drilling dust groove 8 engages in the indentations 10 provided on the sleeve 7 in the region of the curvature 9 of the drill 1. The mutually opposite indentations 10 are offset from one another in accordance with the course of the drilling dust groove 8 of the drill 1. The indentations 10 secure the drill 1 from spinning in the driving part 2 and at the same time ensure transmission of the torque to the driving part 2. The drill plate 11 located on the drill 1 does not come into contact with the sleeve 7 or the sleeve base 12. Nevertheless, a transmission of the rotary impact force generated by the hammer drill, which cannot be seen from the drawing, via the stop disk 3 to the sleeve 7 is ensured. This rotational impact force is transmitted to the threaded sleeve 14 by the pin extension 13 located in the area of the sleeve base 12, which in turn pushes the expansion sleeve 17 onto the conical pin 18. The optimal transmission of the torque is ensured in that there is a bolt 15 on the bolt attachment, which is encircled by a shoulder having a ring gear 16. The toothing of the ring gear 16 engages in a corresponding inner shoulder of the threaded sleeve 14 and thereby ensures an optimal transfer of the rotary impact force generated by the hammer drill to the threaded sleeve 14.

Claims (5)

1. Eintreibvorrichtung für Befestigungsanker mit Spreiz- und Gewindehülse, bestehend aus einem Bohrer, an dessen mit einer Bohrmehlnut versehenem Bohrschaft ein Bohrplättchen vorgesehen sowie eine an einem am Bohrschaft ausgebildeten Bund anliegende Anschlagschei­be angeordnet ist, und einem auf den Bohrer aufschieb­baren Eintreibteil, dadurch gekennzeichnet, daß das Eintreibteil (2) aus einer Hülse (7) besteht, deren Wandung zwei sich gegenüber­liegende, leicht gegeneinander versetzte Eindellungen (10) aufweist, in die die am Bohrschaft (6) angeordnete Bohrmehlnut (8) eingreift, wobei die Hülse (7) mit ih­rem einen Ende an der Anschlagscheibe (3) anliegt und am gegenüberliegenden Ende durch einen Hülsengrund (12) geschlossen ist und in diesem Bereich ein Bolzenaufsatz (13) angeordnet ist.1. driving-in device for fastening anchors with expansion and threaded sleeve, consisting of a drill, on the drill shaft of which is provided with a drilling dust groove, a drilling plate is provided and a stop disc arranged on a collar formed on the drilling shaft is arranged, and a drive-in part which can be pushed onto the drill, characterized in that that the driving-in part (2) consists of a sleeve (7), the wall of which has two opposing, slightly offset indentations (10) into which the drilling dust groove (8) arranged on the drill shaft (6) engages, the sleeve (7) one end of the abutment washer (3) is closed at the opposite end by a sleeve base (12) and a bolt attachment (13) is arranged in this area. 2. Eintreibvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Bolzenaufsatz (13) sich an der Hülse (7) mit reduziertem Außendurchmesser fortsetzt und aus einem Bolzen (15) besteht, der in seinem der Hülse (7) zugewandten Bereich von einem ei­nen Zahnkranz (16) aufweisenden Absatz umlaufen wird.2. Driving device according to claim 1, characterized in that the bolt attachment (13) continues on the sleeve (7) with a reduced outside diameter and consists of a bolt (15) which, in its area facing the sleeve (7), will be surrounded by a shoulder (16) with a ring gear (16). 3. Eintreibvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Eindellungen (10) in dem Bereich der Hülse (7) angeordnet sind, in dem eine Wölbung (9) des Bohrers (1) den größten Durchmes­ser aufweist.3. Driving device according to claim 1, characterized in that the indentations (10) are arranged in the region of the sleeve (7) in which a curvature (9) of the drill (1) has the largest diameter. 4. Eintreibvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß zwischen der das Bohrplättchen (11) aufweisenden Stirnseite des Bohrers (1) und dem Hülsengrund (12) ein Zwischenraum verbleibt.4. Driving device according to one of the preceding claims, characterized in that a space remains between the end face of the drill bit (11) of the drill (1) and the sleeve base (12). 5. Eintreibvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß ein topfförmiges Anschlagelement (4) den am Bohr­schaft (6) ausgebildeten Bund (5), die an diesem anlie­gende Anschlagscheibe (3) sowie einen Teil des in die­sem Bereich liegenden Endes der Hülse (7) übergreift.5. Driving device according to one of the preceding claims, characterized in that a cup-shaped stop element (4) on the drill shaft (6) formed collar (5), the abutting disc (3) and part of the end of the sleeve lying in this area (7) overlaps.
EP90105523A 1989-05-22 1990-03-23 Driving device for bolts anchored by impact with open out sleeve Withdrawn EP0399164A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3916611A DE3916611A1 (en) 1989-05-22 1989-05-22 DRIVING DEVICE FOR IMPACT ANCHORS WITH SPREADING SLEEVE
DE3916611 1989-05-22

Publications (1)

Publication Number Publication Date
EP0399164A1 true EP0399164A1 (en) 1990-11-28

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ID=6381140

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90105523A Withdrawn EP0399164A1 (en) 1989-05-22 1990-03-23 Driving device for bolts anchored by impact with open out sleeve

Country Status (5)

Country Link
US (1) US5030043A (en)
EP (1) EP0399164A1 (en)
JP (1) JPH0645933B2 (en)
BR (1) BR9002372A (en)
DE (1) DE3916611A1 (en)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
US8061000B2 (en) 2008-06-06 2011-11-22 Black & Decker Inc. Anchor installation tool
CN111438529A (en) * 2020-05-18 2020-07-24 张明杰 Transmission shaft forming and manufacturing process

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JPH0663282U (en) * 1993-02-19 1994-09-06 新興通信建設株式会社 Stock pick for crushing protective concrete
US5704745A (en) * 1996-09-04 1998-01-06 Credo Tool Company Chuck sleeve insert for a drill
AT406409B (en) * 1998-05-06 2000-05-25 Schlager Josef DEVICE FOR IMPACTING WEDGE DOWELS
US5979913A (en) * 1998-05-19 1999-11-09 Kosik; Thomas Universal driving and setting tool and method of using same
US6585143B1 (en) * 2001-03-05 2003-07-01 John M. Schultz Anchor setting device
US6558089B2 (en) * 2001-09-14 2003-05-06 Deblasio Michael J. Extender assembly for core drill
DE102005048345A1 (en) * 2005-10-10 2007-04-12 Robert Bosch Gmbh Hand machine tool accessory unit
US8602285B2 (en) * 2008-06-06 2013-12-10 Black & Decker Anchor installation tool
US20100264191A1 (en) * 2009-04-18 2010-10-21 Patricia Lynne Foster Nail pin anchor setting tool
US9931721B2 (en) * 2009-12-18 2018-04-03 Accelerated Fastening, LLC Installation system for ceiling mounted items
US20100299844A1 (en) * 2010-06-10 2010-12-02 Powers Products Iii, Llc Drop-in anchor
US9975232B2 (en) 2012-02-27 2018-05-22 Milwaukee Electric Tool Corporation Pin anchor driver
CA2790948C (en) * 2012-09-20 2015-12-08 Robert Cousineau Undercut tool assembly
DE102012221114B3 (en) * 2012-11-19 2014-04-10 Hilti Aktiengesellschaft Setting tool for impact anchors
US11105356B2 (en) 2016-11-30 2021-08-31 Andrew S. Pauba Drop-in anchor setting tool
US10300588B2 (en) * 2016-11-30 2019-05-28 Andrew S. Pauba Method of setting a drop-in anchor
FR3104933B1 (en) * 2019-12-20 2022-07-29 Innoprod Medical CLAMPING SYSTEM FOR SCREWDRIVERS AND ITS USE

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US4007795A (en) * 1976-02-13 1977-02-15 Skil Corporation Attachment for a rotary-hammer tool
FR2509450A1 (en) * 1981-07-08 1983-01-14 Wurth Paul Sa DEVICE FOR COUPLING A DRILLING ROD FROM THE CASTING HOLE OF A TANK OVEN TO THE WORKING TOOL OF A DRILLING MACHINE
GB2122933A (en) * 1982-07-02 1984-01-25 Upat Max Langensiepen Kg Setting tool for driving in a threaded rod
EP0304002A1 (en) * 1987-08-20 1989-02-22 HILTI Aktiengesellschaft Drill for portable drilling machine, screw holding bit and method for manufacturing these tools
DE3813325A1 (en) * 1988-04-21 1989-11-02 Fischer Artur Werke Gmbh Screwdriver element

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8061000B2 (en) 2008-06-06 2011-11-22 Black & Decker Inc. Anchor installation tool
CN111438529A (en) * 2020-05-18 2020-07-24 张明杰 Transmission shaft forming and manufacturing process
CN111438529B (en) * 2020-05-18 2020-12-08 山东沃克美智能科技有限公司 Transmission shaft forming and manufacturing process

Also Published As

Publication number Publication date
DE3916611A1 (en) 1990-11-29
US5030043A (en) 1991-07-09
JPH03155907A (en) 1991-07-03
BR9002372A (en) 1991-08-13
JPH0645933B2 (en) 1994-06-15

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