EP0747180A1 - Support de perçage avec équipement d'avance pour perceuse à main - Google Patents

Support de perçage avec équipement d'avance pour perceuse à main Download PDF

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Publication number
EP0747180A1
EP0747180A1 EP95630053A EP95630053A EP0747180A1 EP 0747180 A1 EP0747180 A1 EP 0747180A1 EP 95630053 A EP95630053 A EP 95630053A EP 95630053 A EP95630053 A EP 95630053A EP 0747180 A1 EP0747180 A1 EP 0747180A1
Authority
EP
European Patent Office
Prior art keywords
rod
support
spring
friction roller
drill
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Withdrawn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
EP95630053A
Other languages
German (de)
English (en)
Inventor
Armand Lang
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP95630053A priority Critical patent/EP0747180A1/fr
Priority to US08/650,617 priority patent/US5676503A/en
Priority to JP8150236A priority patent/JPH08332628A/ja
Priority to AU52436/96A priority patent/AU5243696A/en
Priority to CA002177202A priority patent/CA2177202A1/fr
Publication of EP0747180A1 publication Critical patent/EP0747180A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
    • B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
    • B25H1/0021—Stands, supports or guiding devices for positioning portable tools or for securing them to the work
    • B25H1/0035—Extensible supports, e.g. telescopic
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S408/00—Cutting by use of rotating axially moving tool
    • Y10S408/712—Drill press adapted to use portable hand drill
    • 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
    • Y10T408/65—Means to drive tool
    • Y10T408/675—Means to drive tool including means to move Tool along tool-axis
    • 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
    • Y10T408/91—Machine frame

Definitions

  • the invention relates to a drill stand with an automatic feed device for a drilling machine, in particular for producing boreholes in concrete ceilings or the like.
  • Concrete ceilings are usually drilled from the bottom up so that the drilling dust can fall freely out of the borehole due to gravity.
  • the drilling work requires a lot of effort, since the drilling machine has to be pushed upwards manually. At the same time, the worker is exposed to the drilling dust falling out of the borehole. The work is not harmless as a result of the long drill tending to vibrate and damage to health through inhalation of the dust can also occur.
  • Drilling stands with automatic, hydraulic feed devices are already known to press the drilling machine against the concrete ceiling. Such hydraulic feed devices are structurally complex and accordingly expensive to buy. They are therefore only suitable for relatively large, heavy drilling machines for the production of large diameter concrete openings. Hydraulic feed devices have not previously been used in connection with hand drills for drilling smaller holes in concrete ceilings.
  • the object of the invention is to provide a portable, simple and light drill stand with an automatic feed device for a hand drill, so that concrete breakthroughs can be made without manual effort and without dust pollution while avoiding the disadvantages mentioned above.
  • the invention provides a drill stand with a length-adjustable support consisting of two telescopically adjustable rods, with a support device for a drill, which is axially displaceably guided on one of the two rods, and an axially movable, lockable adjustment unit for advancing the support device in Direction to the drilling point via a feed pressure spring arranged between the support device and the adjustment unit, wherein when a drill clamped in the drilling machine is applied to the drilling point, a feed force is to be exerted on the support device by compressing the feed pressure spring via the adjustment unit.
  • the drill stand To drill a concrete hole, the drill stand is set up between the floor and the concrete ceiling and adjusted to the height of the room by changing the length and finally firmly clamped between the floor and the ceiling. Then, by actuating the adjustment unit, the carrying device with the drill is moved upwards via the feed pressure spring until the drill touches the ceiling. The adjustment unit is then moved further upwards, which compresses the spring until it presses the drill against the ceiling with the required feed force. The drill stand is now set up and the drill can be switched on via a remote control. After the ceiling has been pierced, the drill is switched off again via the remote control and the adjusting unit is moved down again to relax the feed spring and remove the drill from the drilling point. Concrete piercing can therefore be done without manual effort and free of Dust pollution can be carried out with a simple drill stand.
  • length-adjustable supports can be used as drill stands, such as those used to set up formwork. These supports usually consist of a lower standpipe or a lower rod in which an upper rod is slidably received. In addition, these known supports have a device for changing the length of the support. It is only necessary to provide the support device for the drilling machine, the adjustment unit and the feed compression spring on the upper rod.
  • the feed compression spring can be a helical spring which is arranged around the boring bar.
  • the adjusting unit can have a threaded ring on the upper rod, which is seated on a threaded section of the upper rod.
  • the threaded ring can be locked on the upper rod after lifting the carrying device with the drill and compressing the feed pressure spring.
  • the adjustment unit preferably has a first adjustment head which can be displaced on the rod and in which a rotatable friction roller is mounted, which can be wedged self-locking between a running surface of the rod and inclined surfaces of the adjustment head under the load of the feed compression spring and is spring-loaded in the direction of the wedge point is, by driving the friction roller from the outside to move the adjustment head on the rod to advance the support device to the drilling point and to compress the feed compression spring and the friction roller against the spring load is movable away from the wedge point to the feed compression spring by displacement to relax on the rod in the opposite direction of the adjustment head and to move the carrying device away from the drilling point.
  • the friction roller can be mounted in longitudinal holes arranged obliquely to the longitudinal axis of the support and can be gripped on both sides of the adjustment head by a guide element which is provided with a handle, the inclined surfaces being formed by side surfaces of the longitudinal holes which converge in the feed direction towards the running surface of the rod and a spring is arranged between the guide member and the adjustment head, which presses the friction roller towards the wedge point.
  • the device for changing the length of the support can consist of a friction drive with a second adjustment head which is integrally formed on the lower rod.
  • An adjustment head with a friction drive for a length-adjustable support is described for example in DE-PS 26 30 446.
  • a rotatable friction roller is mounted which, under the action of the load through the upper rod, can be locked in a self-locking manner between a running surface of the upper rod and inclined surfaces of the adjustment head and is spring-loaded in the direction of the wedge point.
  • the support is extended by driving the friction roller by extending the upper rod from the lower rod and to shorten the length of the support, the friction roller is moved away from the wedge point against the spring load, after which the upper rod can simply be pushed back into the lower rod .
  • this second adjustment head with friction drive
  • the first adjustment head for the support device of the drilling machine and the second adjustment head for changing the length of the support are essentially identical in construction, with the exception that the first adjustment head can be moved on one rod (the inner, upper rod) and the second adjustment head on the other rod (the outer, lower rod) molded, z. B. is welded.
  • the oblique wedge surfaces of the first adjustment head converge towards the tread of the inner rod in the upward direction toward the feed compression spring, while the oblique wedge surfaces of the second adjustment head converge in the opposite direction towards the tread of the inner rod.
  • the two adjustment heads are thus rotated by 180 ° with respect to one another.
  • the drill stand has a lower outer hollow rod 2 and an upper inner hollow rod 4, which is received telescopically in the lower inner rod 2.
  • the rods 2 and 4 are displaced in the longitudinal direction relative to one another.
  • the lower rod 2 has on her lower end a widened foot part 2a and the upper rod has a widened head part 4a at its upper end.
  • a support device 10 with a chuck 20 for a drilling machine 30 is slidably arranged on the upper rod 4.
  • the carrying device 10 has a sleeve 12 which is adapted in its cross-sectional shape to the cross-sectional shape of the rod 4.
  • both rods 2, 4 have a square shape, other shapes, such as. B. circular rods are also conceivable.
  • the chuck 20 can be adjustable in the radial and circumferential directions with respect to the support.
  • An adjustment unit 40 is provided below the support device 10 on the upper rod 4 and can be blocked on the rod 4.
  • a feed compression spring 50 is arranged on the upper rod 4 between the adjustment unit 40 and the carrying device 10.
  • a first spring seat ring 52 is located between the upper end of the spring 50 and the support device 10 and a second spring seat ring 54 is located between the lower end of the spring 50 and the adjustment unit 40.
  • the adjustment unit 40 has a first adjustment head 100 with a friction drive.
  • the friction drive has a friction roller 102, which in longitudinal holes 104 in the front wall 106 and in the rear wall 108 of the adjustment head 100 is stored.
  • the longitudinal holes 104 are arranged at an acute angle ⁇ to the longitudinal axis xx of the support, the angular tip being directed towards the head part 4a of the upper inner rod 4.
  • the friction roller 102 has a central part 102a which bears against the tread 4 'of the inner upper rod 4.
  • the friction roller 102 has end parts 102b of larger diameter on both sides of the central part 102a, which overlap opposite side surfaces of the upper inner rod 4 and are slidably received and guided in the longitudinal holes 104.
  • the adjustment head 100 is pressed down and over the oblique wedge surfaces 104 'of the longitudinal holes 104, which converge upwards towards the tread 4' of the upper rod 4, the friction roller 102 between the tread 4 'of the upper inner Rod 4 and the wedge surfaces 104 'of the longitudinal holes 104 facing and opposing the tread 4' are wedged or blocked.
  • a guide member 130 is mounted on the adjustment head 100 by means of a pivot pin 132 on lugs 134 about a horizontal axis y-y.
  • the guide member 130 is U-shaped with two legs 130a, 130b, which overlap the front wall 106 and the rear wall 108 of the adjusting head 100 and are provided at their free end with semicircular cutouts 134a, in which the end parts 102b of the friction roller 102 are received are.
  • the front leg 130a is shown broken or broken away.
  • a handle 136 is provided on the web 130c of the U-shaped guide member 130.
  • a coil spring 138 sits on the pivot pin 132 and presses the guide member 130 clockwise and accordingly the friction roller 102 in the longitudinal holes 104 upwards towards the wedge point between the tread 4 'and the wedge surfaces 104'.
  • a hand crank 140 is pivotally received in a transverse bore of the friction roller 102.
  • the adjustment head 100 on the inner rod 4 moves upwards to raise the drilling machine 30 and compress the feed spring 50.
  • the friction roller 102 in the longitudinal holes 104 is moved downward away from the wedge point moved and the adjusting head 100 can be freely moved down on the upper rod to relax the feed spring 50 and lower the drilling machine 30.
  • the adjusting head 100 has an extension sleeve 142 which is adapted in its cross-sectional shape to the upper rod 4 and is non-rotatably guided thereon.
  • the lower spring seat ring 54 lies on the upper end of the extension sleeve 142.
  • a second adjustment head 100 ' is provided with a friction drive, which essentially corresponds to the first adjustment head 100 for lifting the carrying device 10 and compressing the spring 50, with the exception that the second adjustment head 100' is rotated by 180 degrees with respect to the first adjustment head 100, i. H. the apex of the angle ⁇ 'between the longitudinal axis x-x of the support and the longitudinal axis of the longitudinal holes 104' is directed towards the lower end of the lower rod 2.
  • the second adjustment head 100 ' cannot be moved on the upper rod 4, but is welded to the lower rod 2. All other components of the second adjustment head 100 'are identical to the components of the first adjustment head 100, so that a further description of these components is unnecessary here.
  • the friction roller 102 'of the second lower adjustment head 100' is self-lockingly wedged between the tread 4 'of the upper rod 4 and opposite wedge surfaces of the longitudinal holes 104'.
  • the helical spring 138 ' presses the friction roller 102' downward towards the clamping point via the guide member 130 '.
  • the friction roller 102 ' is turned clockwise by means of the hand lever 140 'rotated.
  • the friction roller 102 ' By pressing the hand lever 136 'in the direction of the lower rod 2 against the spring 138', the friction roller 102 'is moved upward away from the clamping point, so that the upper rod 4 can be pushed into the lower rod 2 to shorten the strut .
  • the stand can also be used to drill holes down into the floor and can also be used horizontally to drill holes in vertical walls.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
EP95630053A 1995-05-24 1995-05-24 Support de perçage avec équipement d'avance pour perceuse à main Withdrawn EP0747180A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP95630053A EP0747180A1 (fr) 1995-05-24 1995-05-24 Support de perçage avec équipement d'avance pour perceuse à main
US08/650,617 US5676503A (en) 1995-05-24 1996-05-20 Drill stand with an automatic advancement device for a drilling machine
JP8150236A JPH08332628A (ja) 1995-05-24 1996-05-22 孔あけ機のための自動前送り装置を備えた孔あけスタンド
AU52436/96A AU5243696A (en) 1995-05-24 1996-05-23 Drill stand with an automatic feeder for a drilling machine
CA002177202A CA2177202A1 (fr) 1995-05-24 1996-05-23 Socle de perceuse avec effort d'avance automatique de la perceuse

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP95630053A EP0747180A1 (fr) 1995-05-24 1995-05-24 Support de perçage avec équipement d'avance pour perceuse à main
US08/650,617 US5676503A (en) 1995-05-24 1996-05-20 Drill stand with an automatic advancement device for a drilling machine

Publications (1)

Publication Number Publication Date
EP0747180A1 true EP0747180A1 (fr) 1996-12-11

Family

ID=26140644

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95630053A Withdrawn EP0747180A1 (fr) 1995-05-24 1995-05-24 Support de perçage avec équipement d'avance pour perceuse à main

Country Status (5)

Country Link
US (1) US5676503A (fr)
EP (1) EP0747180A1 (fr)
JP (1) JPH08332628A (fr)
AU (1) AU5243696A (fr)
CA (1) CA2177202A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016113528A1 (de) * 2016-07-21 2018-01-25 Claus Voss Objektstütze und deren Verwendung als Stütze für ein tragbares Werkzeug
CN109732790A (zh) * 2018-12-11 2019-05-10 中国二冶集团有限公司 一种利用丝杆传动装置高空水平钻孔施工方法

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US20040240952A1 (en) * 2003-03-18 2004-12-02 Perry Eugene D. Device for drilling holes in a ceiling
US20050105976A1 (en) * 2003-11-17 2005-05-19 Groomes Kim C. Inverted drill press
US20050152756A1 (en) * 2004-01-12 2005-07-14 Ronald Howard Universal pressure drill and srew runner
US7462004B2 (en) * 2005-05-19 2008-12-09 Smart Tools Inc. Drill fixture
US10994358B2 (en) 2006-12-20 2021-05-04 Lincoln Global, Inc. System and method for creating or modifying a welding sequence based on non-real world weld data
US9937577B2 (en) 2006-12-20 2018-04-10 Lincoln Global, Inc. System for a welding sequencer
US9104195B2 (en) 2006-12-20 2015-08-11 Lincoln Global, Inc. Welding job sequencer
US8747116B2 (en) * 2008-08-21 2014-06-10 Lincoln Global, Inc. System and method providing arc welding training in a real-time simulated virtual reality environment using real-time weld puddle feedback
US8915740B2 (en) * 2008-08-21 2014-12-23 Lincoln Global, Inc. Virtual reality pipe welding simulator
US9318026B2 (en) 2008-08-21 2016-04-19 Lincoln Global, Inc. Systems and methods providing an enhanced user experience in a real-time simulated virtual reality welding environment
US9483959B2 (en) * 2008-08-21 2016-11-01 Lincoln Global, Inc. Welding simulator
US9280913B2 (en) 2009-07-10 2016-03-08 Lincoln Global, Inc. Systems and methods providing enhanced education and training in a virtual reality environment
US9196169B2 (en) 2008-08-21 2015-11-24 Lincoln Global, Inc. Importing and analyzing external data using a virtual reality welding system
US8884177B2 (en) 2009-11-13 2014-11-11 Lincoln Global, Inc. Systems, methods, and apparatuses for monitoring weld quality
US8911237B2 (en) 2008-08-21 2014-12-16 Lincoln Global, Inc. Virtual reality pipe welding simulator and setup
US9330575B2 (en) 2008-08-21 2016-05-03 Lincoln Global, Inc. Tablet-based welding simulator
US8834168B2 (en) 2008-08-21 2014-09-16 Lincoln Global, Inc. System and method providing combined virtual reality arc welding and three-dimensional (3D) viewing
US8851896B2 (en) 2008-08-21 2014-10-07 Lincoln Global, Inc. Virtual reality GTAW and pipe welding simulator and setup
US8274013B2 (en) 2009-03-09 2012-09-25 Lincoln Global, Inc. System for tracking and analyzing welding activity
US10006161B2 (en) * 2009-06-03 2018-06-26 Blue Spruce Holdings, LLC System for steam treatment of textiles
US9773429B2 (en) 2009-07-08 2017-09-26 Lincoln Global, Inc. System and method for manual welder training
US9221117B2 (en) 2009-07-08 2015-12-29 Lincoln Global, Inc. System for characterizing manual welding operations
US10748447B2 (en) 2013-05-24 2020-08-18 Lincoln Global, Inc. Systems and methods providing a computerized eyewear device to aid in welding
US9011154B2 (en) 2009-07-10 2015-04-21 Lincoln Global, Inc. Virtual welding system
US8569655B2 (en) 2009-10-13 2013-10-29 Lincoln Global, Inc. Welding helmet with integral user interface
US8569646B2 (en) 2009-11-13 2013-10-29 Lincoln Global, Inc. Systems, methods, and apparatuses for monitoring weld quality
US9468988B2 (en) 2009-11-13 2016-10-18 Lincoln Global, Inc. Systems, methods, and apparatuses for monitoring weld quality
US20110255929A1 (en) * 2010-04-15 2011-10-20 Buchner David J Universal Drill Stand
DE102010030227A1 (de) * 2010-06-17 2011-12-22 Hilti Aktiengesellschaft Vorrichtung zur Führung eines Werkzeuggerätes
DE102010030219A1 (de) * 2010-06-17 2011-12-22 Hilti Aktiengesellschaft Vorrichtung zur Führung eines Handwerkzeuggerätes
EP2652726B1 (fr) 2010-12-13 2019-11-20 Lincoln Global, Inc. Système d'apprentissage de soudage
US20160093233A1 (en) 2012-07-06 2016-03-31 Lincoln Global, Inc. System for characterizing manual welding operations on pipe and other curved structures
US9767712B2 (en) 2012-07-10 2017-09-19 Lincoln Global, Inc. Virtual reality pipe welding simulator and setup
JP2014065141A (ja) * 2012-09-05 2014-04-17 Safety Kk 手持ち工具の作業用支持装置および支持方法
CN103042248B (zh) * 2012-12-25 2015-09-09 宁波鑫晟工具有限公司 一种钻孔装置
CN103042249B (zh) * 2012-12-25 2015-09-09 宁波鑫晟工具有限公司 电钻架
US10930174B2 (en) 2013-05-24 2021-02-23 Lincoln Global, Inc. Systems and methods providing a computerized eyewear device to aid in welding
JP6412313B2 (ja) * 2013-05-28 2018-10-24 株式会社呉英製作所 回転工具ガイド機構
US20150072323A1 (en) 2013-09-11 2015-03-12 Lincoln Global, Inc. Learning management system for a real-time simulated virtual reality welding training environment
US10083627B2 (en) 2013-11-05 2018-09-25 Lincoln Global, Inc. Virtual reality and real welding training system and method
US9836987B2 (en) 2014-02-14 2017-12-05 Lincoln Global, Inc. Virtual reality pipe welding simulator and setup
WO2015185972A1 (fr) 2014-06-02 2015-12-10 Lincoln Global, Inc. Système et procédé d'apprentissage pour soudeur manuel
CN106014231A (zh) * 2014-09-03 2016-10-12 赵慧娜 一种建筑用防尘省力打孔安装多用装置
DE102015220160A1 (de) * 2015-10-16 2017-04-20 Bayerische Motoren Werke Aktiengesellschaft Werkzeugabstützung
EP3319066A1 (fr) 2016-11-04 2018-05-09 Lincoln Global, Inc. Sélection de fréquence magnétique pour le suivi de position électromagnétique
US10913125B2 (en) 2016-11-07 2021-02-09 Lincoln Global, Inc. Welding system providing visual and audio cues to a welding helmet with a display
US20180130226A1 (en) 2016-11-07 2018-05-10 Lincoln Global, Inc. System and method for calibrating a welding trainer
US10997872B2 (en) 2017-06-01 2021-05-04 Lincoln Global, Inc. Spring-loaded tip assembly to support simulated shielded metal arc welding
US11557223B2 (en) 2018-04-19 2023-01-17 Lincoln Global, Inc. Modular and reconfigurable chassis for simulated welding training
US11475792B2 (en) 2018-04-19 2022-10-18 Lincoln Global, Inc. Welding simulator with dual-user configuration
CN108381471B (zh) * 2018-05-24 2024-06-14 中建五局安装工程有限公司 一种自动避让钢筋的定位打孔装置
CN116175196B (zh) * 2023-04-23 2023-07-21 沧州鑫圆通不锈钢制品有限公司 阀门球体加工装置及其加工工艺

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CH448682A (de) * 1966-04-28 1967-12-15 Huerlimann Hans Halterung für Bohrmaschinen
DE2630446B1 (de) * 1976-07-07 1977-12-08 Kurt Linnepe Laengenveraenderbare Stuetze
DE2643598A1 (de) * 1976-09-28 1978-03-30 Berthold Schocker Bohrstaender fuer bohrmaschinen
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Publication number Priority date Publication date Assignee Title
CH448682A (de) * 1966-04-28 1967-12-15 Huerlimann Hans Halterung für Bohrmaschinen
DE2630446B1 (de) * 1976-07-07 1977-12-08 Kurt Linnepe Laengenveraenderbare Stuetze
DE2643598A1 (de) * 1976-09-28 1978-03-30 Berthold Schocker Bohrstaender fuer bohrmaschinen
DE8902424U1 (de) * 1989-03-01 1989-06-08 Timpe, Bernhard, 3260 Rinteln Arbeitsstütze

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016113528A1 (de) * 2016-07-21 2018-01-25 Claus Voss Objektstütze und deren Verwendung als Stütze für ein tragbares Werkzeug
CN109732790A (zh) * 2018-12-11 2019-05-10 中国二冶集团有限公司 一种利用丝杆传动装置高空水平钻孔施工方法

Also Published As

Publication number Publication date
US5676503A (en) 1997-10-14
AU5243696A (en) 1996-12-05
CA2177202A1 (fr) 1996-11-25
JPH08332628A (ja) 1996-12-17

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