EP0279305B1 - Device for cutting construction material by means of an abrasive cable or wire - Google Patents

Device for cutting construction material by means of an abrasive cable or wire Download PDF

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Publication number
EP0279305B1
EP0279305B1 EP88101771A EP88101771A EP0279305B1 EP 0279305 B1 EP0279305 B1 EP 0279305B1 EP 88101771 A EP88101771 A EP 88101771A EP 88101771 A EP88101771 A EP 88101771A EP 0279305 B1 EP0279305 B1 EP 0279305B1
Authority
EP
European Patent Office
Prior art keywords
cable
wire
carriage
pulley
pulleys
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
EP88101771A
Other languages
German (de)
French (fr)
Other versions
EP0279305A3 (en
EP0279305A2 (en
Inventor
Guy Pittet
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.)
Forbeton-Betonbohr Sa
Original Assignee
Forbeton-Betonbohr Sa
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 Forbeton-Betonbohr Sa filed Critical Forbeton-Betonbohr Sa
Priority to AT88101771T priority Critical patent/ATE68400T1/en
Publication of EP0279305A2 publication Critical patent/EP0279305A2/en
Publication of EP0279305A3 publication Critical patent/EP0279305A3/en
Application granted granted Critical
Publication of EP0279305B1 publication Critical patent/EP0279305B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/08—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with saw-blades of endless cutter-type, e.g. chain saws, i.e. saw chains, strap saws
    • B28D1/088—Sawing in situ, e.g. stones from rocks, grooves in walls
    • 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
    • Y10T83/00—Cutting
    • Y10T83/707—By endless band or chain knife
    • 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
    • Y10T83/00—Cutting
    • Y10T83/707—By endless band or chain knife
    • Y10T83/7101—With tool in-feed
    • Y10T83/7108—Including ground-traversing vehicle

Definitions

  • the present invention relates to a machine for cutting building materials by means of a cable or abrasive wire forming a closed loop driven in circulation and in traction by the movement of a driving pulley around which circulates the cable or the abrasive wire and which is mounted on a mobile carriage moving along an elongated frame by means of a linear drive device.
  • the cutting, for a total or partial demolition, of the materials of a building or a work poses more and more problems, especially in reinforced concrete constructions of great thickness where the use of diamond discs of large diameters poses many problems with training, dimensions and noise.
  • Machines are also known using an abrasive helical wire, more recently a diamond cable, driven in circulation by a drive device with several pulleys mounted on a tractor means moving on rails placed on the ground, as and when cutting progress (EP-A-0 078 920).
  • the pulleys are simple pulleys and the length of the cables is chosen according to the size of the cut.
  • diamond cables which are more efficient but more expensive
  • the reduction in the length of the loop is obtained by cutting and joining the ends by means of screwing or crimping. Given the size of such facilities, they are used almost exclusively in the operation of open pits where there are few or no space limitations for move the tractor device. In addition, this tractor device cannot move in all directions, in particular vertically.
  • the purpose of the present invention is to allow construction materials to be cut by means of an abrasive wire or cable, without limitation and in all positions, thicknesses less than or greater than 60 cm, in a limited space allowing in particular its use for inside standard constructions.
  • the machine must therefore have a small footprint and a reduced weight.
  • This machine can be used in all positions, especially in vertical, horizontal or oblique position.
  • the cable slack winding system using two grooved pulleys allows the same fixed length of cable or abrasive wire to be used from start to finish.
  • Figure 1 is a perspective view of the machine in horizontal use.
  • FIGS 2 to 5 schematically illustrate four successive working phases of the machine.
  • the machine shown in Figure 1 comprises an elongated rigid frame 1 of aluminum provided with a base plate and support 2 perpendicular to the axis of the frame.
  • This frame carries a carriage 3 which can move in two slides 4 and 5 of the frame. These slides, having a U-shaped profile, could also serve as rolling tracks for a carriage 3 provided with rollers. In all cases the carriage is retained in all directions transverse to the frame, so that the frame can be used in any position.
  • the carriage 3 is attached the ends of a chain 6, a single strand of which is visible in FIG. 1, a chain driven by a motor 7 fixed on the base plate 2 and passing over a return 8 mounted at the other end of the built.
  • the carriage 3 carries a drive pulley 9 provided with several grooves and driven by a hydraulic or electric motor. On the carriage 3 is also mounted a crazy grooved pulley 11 between the driving pulley 9 and the base plate 2. Instead of a single grooved pulley it is of course possible to use several pulleys with a single groove, this both for the pulley 9 as for the pulley 11.
  • an abrasive cable 12 for example a diamond cable.
  • FIGS. 2 to 5 It is desired to cut a section 13 from a concrete wall.
  • the installation of the machine consists in applying its base plate 2 against the wall and in anchoring this plate by expanding plugs using the holes 14 provided therein for this purpose.
  • Figure 2 can be both a plan view and an elevational view. Holes 15 and 16 are drilled in the wall to be cut through which the cable 12 is first opened. Then connect the ends of the cable 12 so as to form a closed loop which is passed once around the pulleys 9 and 11 of the carriage 3. If the section 13 to be cut is smaller we will wind the cable 12 once again around the pulleys 9 and 11. The cable 12 is tensioned by means of the drive chain 6 of the carriage.
  • the motor 10 is started, which has the effect of driving the cable 12 in circulation and of initiating the section 13 to be cut.
  • the cable 12 is kept taut by simultaneously advancing the carriage 3 towards the end of the frame 1, in the direction of the arrow, by means of the motor 7.
  • the motor 10 is stopped and the carriage (3) is brought back to the base plate 2.
  • the cable slack 12a is wound up around the pulleys 9 and 11 so as to form a taut outer loop ( Figure 4). Then repeat the operations according to Figure 2 to cut out the rest of section 13 ( Figure 5).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

The machine comprises an elongate frame (1), on which is mounted a carriage (3) carrying a driving pulley (9) and an idle pulley (11), on which an abrasive cable (12) is wound. The length of the loop of cable or wire (12) formed between the carriage and the material to be cut can be changed by means of the number of winding turns of the cable or wire round the pulleys.

Description

La présente invention à pour objet une machine pour la coupe de matériaux de construction au moyen d'un câble ou fil abrasif formant une bloucle fermée entrainée en circulation et en traction par le déplacement d'une poulie motrice autour de laquelle circule le câble ou le fil abrasif et qui est montée sur un chariot mobile se déplaçant le long d'un bâti allongé par l'intermédiaire d'un dispositif d'entraînement linéaire.The present invention relates to a machine for cutting building materials by means of a cable or abrasive wire forming a closed loop driven in circulation and in traction by the movement of a driving pulley around which circulates the cable or the abrasive wire and which is mounted on a mobile carriage moving along an elongated frame by means of a linear drive device.

La coupe, pour une démolition totale ou partielle, des matériaux d'un immeuble ou d'un ouvrage pose de plus en plus de problèmes, surtout dans les constructions en béton armé de fortes épaisseurs où l'emploi de disques diamantés de grands diamètres pose de nombreux problèmes d'entraînement, de dimensions et de bruit.The cutting, for a total or partial demolition, of the materials of a building or a work poses more and more problems, especially in reinforced concrete constructions of great thickness where the use of diamond discs of large diameters poses many problems with training, dimensions and noise.

On connaît par ailleurs des machines utilisant un fil hélicoïdal abrasif, plus récemment un câble diamanté, entraîné en circulation par un dispositif d'entraînement à plusieurs poulies monté sur un moyen tracteur se déplaçant sur des rails posés au sol, au fur et à mesure de l'avancement de la coupe (EP-A-0 078 920). Les poulies sont des poulies simples et la longueur des câbles est choisie en fonction de l'importance de la coupe. Lors de l'utilisation de câbles diamantés, plus performants mais plus chers, la diminution de la longueur de la boucle est obtenue par sectionnement et par raboutage des extrémités au moyen de vissage ou de sertissage. Compte tenu de l'encombrement de telles installations, elles sont employées presque exclusivement dans l'exploitation des carrières à ciel ouvert où il n'y a que peu ou pas de limitations d'espace pour assurer le déplacement du dispositif tracteur. En outre, ce dispositif tracteur ne peut pas se déplacer dans toutes les directions notamment verticalement.Machines are also known using an abrasive helical wire, more recently a diamond cable, driven in circulation by a drive device with several pulleys mounted on a tractor means moving on rails placed on the ground, as and when cutting progress (EP-A-0 078 920). The pulleys are simple pulleys and the length of the cables is chosen according to the size of the cut. When using diamond cables, which are more efficient but more expensive, the reduction in the length of the loop is obtained by cutting and joining the ends by means of screwing or crimping. Given the size of such facilities, they are used almost exclusively in the operation of open pits where there are few or no space limitations for move the tractor device. In addition, this tractor device cannot move in all directions, in particular vertically.

La présente invention a pour but de permettre de couper des matériaux de construction au moyen d'un fil ou câble abrasif, sans limitation et dans toutes les positions, des épaisseurs inférieures ou supérieures à 60 cm, dans un espace restreint permettant notamment son utilisation à l'intérieur des constructions de type standard. La machine doit donc présenter un faible encombrement et un poids réduit.The purpose of the present invention is to allow construction materials to be cut by means of an abrasive wire or cable, without limitation and in all positions, thicknesses less than or greater than 60 cm, in a limited space allowing in particular its use for inside standard constructions. The machine must therefore have a small footprint and a reduced weight.

Ce but est atteint par la machine selon la revendication.This object is achieved by the machine according to claim.

Cette machine peut être utilisée dans toutes les positions, notamment en position verticale, horizontale ou oblique.This machine can be used in all positions, especially in vertical, horizontal or oblique position.

Le système d'enroulement du mou de câble à l'aide de deux poulies à gorges permet d'utiliser du début à la fin de la coupe la même longueur fixe de câble ou fil abrasif.The cable slack winding system using two grooved pulleys allows the same fixed length of cable or abrasive wire to be used from start to finish.

Il est possible d'utiliser une poulie motrice de petit diamètre, car la friction du câble, en raison de son passage sur deux poulies, est importante et l'entraînement est ainsi assuré sans glissement. L'enroulement du mou évite toute perte de friction et diminue ainsi la puissance nécessaire à l'entraînement du câble, ce qui contribue à la légèreté et au faible encombrement de la machine.It is possible to use a small diameter drive pulley, because the friction of the cable, due to its passage on two pulleys, is high and the drive is thus ensured without slipping. The winding of the slack avoids any loss of friction and thus reduces the power required to drive the cable, which contributes to the lightness and small size of the machine.

On constate en outre une usure uniforme du câble ou du fil abrasif sur toute sa longueur. La présence d'un seul point de raboutage limite au minimum le risque de rupture du câble ou fil dû à la fatigue.There is also a uniform wear of the cable or the abrasive wire over its entire length. The presence of a single joining point minimizes the risk of cable or wire breakage due to fatigue.

Le dessin annexé représente, à titre d'exemple, une forme d'exécution de l'invention.The accompanying drawing shows, by way of example, an embodiment of the invention.

La figure 1 est une vue en perspective de la machine en utilisation horizontale.Figure 1 is a perspective view of the machine in horizontal use.

Les figures 2 à 5 illustrent schématiquement quatre phases successives de travail de la machine.Figures 2 to 5 schematically illustrate four successive working phases of the machine.

La machine représentée à la figure 1 comprend un bâti rigide allongé 1 en aluminium muni d'une plaque de base et d'appui 2 perpendiculaire à l'axe du bâti. Ce bâti porte un chariot 3 pouvant se déplacer dans deux glissières 4 et 5 du bâti. Ces glissières, présentant un profil en U, pourraient également servir de voies de roulement à un chariot 3 muni de galets. Dans tous les cas le chariot est retenu dans toutes les directions transversales au bâti, de telle sorte que le bâti peut être utilisé dans n'importe quelle position. Au chariot 3 sont attachées les extrémités d'une chaîne 6, dont un seul brin est visible à la figure 1, chaîne entraînée par un moteur 7 fixé sur la plaque de base 2 et passant sur un renvoi 8 monté à l'autre extrémité du bâti. Le chariot 3 porte une poulie motrice 9 munie de plusieurs gorges et entraînée par un moteur 10 hydraulique ou électrique. Sur le chariot 3 est en outre montée une poulie folle à gorges 11 entre la poulie motrice 9 et la plaque de base 2. Au lieu d'une seule poulie à gorges il est bien entendu possible d'utiliser plusieurs poulies à une seule gorge, ceci aussi bien pour la poulie 9 que pour la poulie 11. Autour des poulies 9 et 11 s'enroule un câble abrasif 12, par exemple un câble diamanté.The machine shown in Figure 1 comprises an elongated rigid frame 1 of aluminum provided with a base plate and support 2 perpendicular to the axis of the frame. This frame carries a carriage 3 which can move in two slides 4 and 5 of the frame. These slides, having a U-shaped profile, could also serve as rolling tracks for a carriage 3 provided with rollers. In all cases the carriage is retained in all directions transverse to the frame, so that the frame can be used in any position. The carriage 3 is attached the ends of a chain 6, a single strand of which is visible in FIG. 1, a chain driven by a motor 7 fixed on the base plate 2 and passing over a return 8 mounted at the other end of the built. The carriage 3 carries a drive pulley 9 provided with several grooves and driven by a hydraulic or electric motor. On the carriage 3 is also mounted a crazy grooved pulley 11 between the driving pulley 9 and the base plate 2. Instead of a single grooved pulley it is of course possible to use several pulleys with a single groove, this both for the pulley 9 as for the pulley 11. Around the pulleys 9 and 11 is wound an abrasive cable 12, for example a diamond cable.

Pour entraîner le chariot 3 il serait bien entendu possible d'utiliser d'autres moyens tels qu'une crémaillère ou un vérin.To drive the carriage 3 it would of course be possible to use other means such as a rack or a jack.

Le fonctionnement et l'utilisation de la machine seront maintenant décrits à l'aide des figures 2 à 5. On désire découper une section 13 d'un mur en béton. La mise en place de la machine consiste à appliquer sa plaque de base 2 contre le mur et à ancrer cette plaque par chevilles expansives en utilisant les trous 14 prévus dans celle-ci à cet effet. La figure 2 peut être aussi bien une vue en plan qu'une vue en élévation. On perce dans le mur à découper des trous 15 et 16 à travers lesquels on introduit le câble 12 tout d'abord ouvert. On relie ensuite les extrémités du câble 12 de manière à former une boucle fermée que l'on fait passer une fois autour des poulies 9 et 11 du chariot 3. Si la section 13 à découper est plus petite on enroulera le câble 12 encore une fois autour des poulies 9 et 11. Le câble 12 est tendu au moyen de la chaîne d'entraînement 6 du chariot. On enclenche le moteur 10, ce qui a pour effet d'entraîner le câble 12 en circulation et d'entamer la section 13 à découper. Le câble 12 est maintenu tendu en faisant simultanément avancer le chariot 3 vers l'extrémité du bâti 1, dans le sens de la flèche, au moyen du moteur 7. Lorsque le chariot 3 est parvenu à l'extrémité du bâti 1 (figure 3) le moteur 10 est stoppé et le chariot (3) est ramené vers la plaque de base 2. Le mou de câble 12a est enroulé autour des poulies 9 et 11 de manière à former une boucle extérieure tendue (figure 4). On répète ensuite les opérations selon la figure 2 pour découper le reste de la section 13 (figure 5).The operation and use of the machine will now be described with the aid of FIGS. 2 to 5. It is desired to cut a section 13 from a concrete wall. The installation of the machine consists in applying its base plate 2 against the wall and in anchoring this plate by expanding plugs using the holes 14 provided therein for this purpose. Figure 2 can be both a plan view and an elevational view. Holes 15 and 16 are drilled in the wall to be cut through which the cable 12 is first opened. Then connect the ends of the cable 12 so as to form a closed loop which is passed once around the pulleys 9 and 11 of the carriage 3. If the section 13 to be cut is smaller we will wind the cable 12 once again around the pulleys 9 and 11. The cable 12 is tensioned by means of the drive chain 6 of the carriage. The motor 10 is started, which has the effect of driving the cable 12 in circulation and of initiating the section 13 to be cut. The cable 12 is kept taut by simultaneously advancing the carriage 3 towards the end of the frame 1, in the direction of the arrow, by means of the motor 7. When the carriage 3 has reached the end of the frame 1 (FIG. 3) the motor 10 is stopped and the carriage (3) is brought back to the base plate 2. The cable slack 12a is wound up around the pulleys 9 and 11 so as to form a taut outer loop (Figure 4). Then repeat the operations according to Figure 2 to cut out the rest of section 13 (Figure 5).

La machine décrite ci-dessus est bien entendu susceptible de nombreuses variantes d'exécution dont quelques unes seulement ont été citées à titre d'exemple au cours de la description, l'étendu de la protection étant déterminée par la teneur des revendications.The machine described above is of course susceptible of numerous variant embodiments, only a few of which have been cited by way of example during the description, the extent of the protection being determined by the content of the claims.

Claims (1)

  1. Machine for cutting construction material by means of an abrasive cable or wire (12) forming a closed loop driven in circulation and traction by the displacement of a driving pulley (9) about which circulates the abrasive cable or wire (12) and which pulley is mounted on a movable carriage (3) displacable along an elongate frame (1) by means of a linear driving device (6,7), characterized in that the rotation axis of the driving pulley (9), provided with a variety of grooves, is perpendicular to said frame (1), in that one extremity of the frame (1) is intented to be secured to the material to be cut, in that on the carriage (3) is mounted a grooved loose pulley (11) next to the driving pulley (9) for winding as desired once or more times the abrasive cable or wire (12), both pulleys (9 and 11) being in the material cutting plane, the machine being so arranged that the length of the loop of cable or wire (12) formed betweeen the carriage and the material to be cut may be modified by the number of winding turns of cable or wire (12) around said pulleys (9 and 11).
EP88101771A 1987-02-18 1988-02-08 Device for cutting construction material by means of an abrasive cable or wire Expired - Lifetime EP0279305B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88101771T ATE68400T1 (en) 1987-02-18 1988-02-08 DEVICE FOR CUTTING CONSTRUCTION MATERIALS BY MEANS OF AN ABRASIVE CABLE OR AN ABRASIVE WIRE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH593/87 1987-02-18
CH593/87A CH669554A5 (en) 1987-02-18 1987-02-18

Publications (3)

Publication Number Publication Date
EP0279305A2 EP0279305A2 (en) 1988-08-24
EP0279305A3 EP0279305A3 (en) 1989-05-03
EP0279305B1 true EP0279305B1 (en) 1991-10-16

Family

ID=4190589

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88101771A Expired - Lifetime EP0279305B1 (en) 1987-02-18 1988-02-08 Device for cutting construction material by means of an abrasive cable or wire

Country Status (7)

Country Link
US (1) US4854296A (en)
EP (1) EP0279305B1 (en)
AT (1) ATE68400T1 (en)
CH (1) CH669554A5 (en)
DE (1) DE3865450D1 (en)
ES (1) ES2027329T3 (en)
GR (1) GR3003593T3 (en)

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US4936284A (en) * 1988-10-31 1990-06-26 Johnson Jack B Concrete saw
DE4122736C2 (en) * 1991-07-10 1996-07-04 Katz H Peter Tensioning device for a wire saw
US5220729A (en) * 1992-08-03 1993-06-22 Gallant Raymond J Hand-held wire saw
AT402710B (en) * 1994-01-07 1997-08-25 Josef Plattner Maschinenbau Un ROPE SAW MACHINE
US5645040A (en) * 1994-04-13 1997-07-08 Hydrostress Ag Cable saw machine for cutting concrete bodies, rocks or the like
AT2194U1 (en) * 1997-04-09 1998-06-25 Braun Maschf Gmbh ROPE STORAGE
DE29805457U1 (en) 1998-03-26 1998-07-23 Cedima Diamantwerkzeug- und Maschinenhandelsgesellschaft mbH, 29227 Celle Wire saw device
DE29821386U1 (en) * 1998-12-01 2000-03-30 Steiner Andreas Rope saw machine
ATE252438T1 (en) * 2000-01-31 2003-11-15 Hydrostress Ag CABLE SAW
DE102004012023B4 (en) * 2004-03-10 2007-06-14 Cedima Diamantenwerkzeug- Und Maschinenhandelsgesellschaft Mbh Cable saw
DE102004012606B4 (en) * 2004-03-12 2007-06-14 Cedima Diamantwerkzeug- Und Maschinenhandelsgesellschaft Mbh Protective device for wire saw devices
DE102007008124A1 (en) 2007-02-19 2008-08-21 Cedima Diamantwerkzeug- Und Maschinenbaugesellschaft Mbh Wire saw system for cutting e.g. natural stone, has roll package formed in position-adjustable manner relative to another roll package, and protective-cover profile partially covering freely-running wire saw outside wire saw machine
TW200934662A (en) * 2007-12-28 2009-08-16 Du Pont Method for reworking adhesively bonded liquid crystal displays
ITTO20080446A1 (en) * 2008-06-10 2009-12-11 Perfora S R L MACHINE FOR CUTTING STONE BLOCKS
CH700374B1 (en) * 2009-02-10 2012-11-30 Betag Betontaglio Sa Seilsägeeinheit and method for operating such Seilsägeeinheit.
US8651098B2 (en) * 2010-03-04 2014-02-18 MacTech, Inc. Apparatus, system and method for using a diamond-impregnated wire to cut an object
EP2505290B1 (en) * 2011-03-28 2014-11-12 Alstom Technology Ltd Device and method for cutting the end winding of an electric machine

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FR312582A (en) * 1900-01-01
US2577545A (en) * 1949-04-02 1951-12-04 H E Fletcher Company Wire saw apparatus
US3452545A (en) * 1965-10-22 1969-07-01 Malloy Paul V Method of earth working
DE3039984A1 (en) * 1980-10-23 1982-06-03 Bau-Haag KG, 7530 Pforzheim COMBINATION OF A HYDRAULIC, ELECTRICAL OR COMBUSTION ENGINE WITH A DIAMOND OR ALSO STEEL ROPE OR DIAMOND-Tipped STEEL ROPE
DE3144482A1 (en) * 1981-11-09 1983-05-19 Maschinenfabrik Korfmann Gmbh, 5810 Witten MACHINE FOR DRIVING A DIAMOND WIRE ROPE FOR CUTTING STONES
JPH049138Y2 (en) * 1986-04-12 1992-03-06

Also Published As

Publication number Publication date
ATE68400T1 (en) 1991-11-15
EP0279305A3 (en) 1989-05-03
EP0279305A2 (en) 1988-08-24
GR3003593T3 (en) 1993-03-16
CH669554A5 (en) 1989-03-31
US4854296A (en) 1989-08-08
ES2027329T3 (en) 1992-06-01
DE3865450D1 (en) 1991-11-21

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