EP0618333A1 - Device for fixing a grab bucket to a shovel - Google Patents

Device for fixing a grab bucket to a shovel Download PDF

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Publication number
EP0618333A1
EP0618333A1 EP94400593A EP94400593A EP0618333A1 EP 0618333 A1 EP0618333 A1 EP 0618333A1 EP 94400593 A EP94400593 A EP 94400593A EP 94400593 A EP94400593 A EP 94400593A EP 0618333 A1 EP0618333 A1 EP 0618333A1
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EP
European Patent Office
Prior art keywords
shaft
arm
adapter
shovel
extensions
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Withdrawn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
EP94400593A
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German (de)
French (fr)
Inventor
Marcel Morin
Jacques Morin
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.)
MORIN FRERES SNC
Original Assignee
MORIN FRERES SNC
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 MORIN FRERES SNC filed Critical MORIN FRERES SNC
Publication of EP0618333A1 publication Critical patent/EP0618333A1/en
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
    • E02F3/413—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with grabbing device
    • E02F3/4135—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with grabbing device with grabs mounted directly on a boom
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
    • E02F3/963—Arrangements on backhoes for alternate use of different tools

Definitions

  • the present invention relates to an adapter for fixing a clamshell to the end of a hydraulic shovel or the like.
  • This device comprises a hooking member articulated on the arm of the shovel.
  • This device comprises two identical blanks rigidly connected.
  • the attachment member is indirectly connected to the arm of the shovel by rods allowing, under the action of a jack, to rotate it relative to said arm about the axis of the aforementioned shaft.
  • the object of the invention is to provide an adapter for automatically hooking a clamshell to the arm of a shovel provided with a hooking member such as that described in the aforementioned French patent application.
  • this adapter is in the form of two yokes associated by their middle part, respectively lower and upper, the lower yoke hinging on the usual vertical shaft of the clamshell while the upper one forms by its wings two hooks, opening downwards, on which hang lateral extensions of the articulation shaft of the attachment member to the arm of the shovel.
  • the axes of articulation of the two yokes of the adapter are offset by 90 °.
  • the rotation of the adapter, around the articulation shaft of the lower yoke, is permanently braked so that said adapter cannot tilt under the effect of its own weight but remains in alignment with the clamshell shaft to which it is attached.
  • the problem to be solved consists in attaching a clamshell, of a known type, to the arm I of a shovel, the representation of the clamshell being limited to that of its shaft 2, vertical suspension.
  • the arm 1 is provided with a hooking member of the kind described in the French patent application published under No. 2 657596.
  • the representation of the above-mentioned hooking member is limited to its two L-shaped flanges 3, joined, inter alia, by a shaft 4 passing through, in known manner, the arm 1.
  • the lower yoke 5b is fixed, by means of a shaft 6, to the shaft 2 so that the adapter 5 remains in the position shown in Figure 1 when the clamshell is free, the articulation said adapter on the shaft 2 is braked to oppose its pivoting under the effect of its weight.
  • This braking means is within the reach of ordinary skill in the art and has not been shown.
  • the wings of the upper yoke 5a form two hooks 7.
  • the ends of the shaft 4 extend beyond the flanges 3 of the attachment member in two lateral extensions 4a. In this way, the driver of the shovel can engage the extensions 4a in the hooks 7 by judicious operation of the arm 1 without getting off his machine.
  • the yokes of the adapter are arranged so that the axes of the shafts 4 and 6 are orthogonal.
  • the invention also relates to a locking device.
  • each hook 7 has, in its plane, a slot 8 in which is articulated a cam 9, by means of a shaft 10, having an extension 9a subjected to the action of a spring 11 which tends to pivot said cam according to arrow F1.
  • a stop can be used to limit the rotation of the cam 9 along the arrow F1 but experience has shown that the spring 11, which is then relaxed and with contiguous turns, can fulfill this function.
  • the profile 9b of the cam 9 is such that if R1 is the distance separating the axis of the shaft 10 from the upper end of the profile 9b and if R2 is the distance separating said axis and the lower end of said profile, R1 is greater than R2.
  • rings 12 are freely mounted on the ends of said shaft and it is on these ends that the cams 9 bear while immobilizing them in rotation, said rings forming thus bearings for the ends of said shaft 4.
  • rings 13 are mounted on the ends of the shaft 4 and interposed between the flanges 3 and the rings 12.
  • each hook has a lever 13 articulated in the slot 8 by one of its ends by means of a shaft 14 and having, at the other, a notch 15. In the rest position, the lever 13 rests by gravity on the top 16 of the hook 7.
  • the shaft 14 is used to allow the attachment of the corresponding spring 11.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Jib Cranes (AREA)

Abstract

Adaptor for fixing a grab bucket to the end of the arm (1) of a shovel including a fastening member (3) articulated to the end of the said arm via a shaft (4), characterised in that the adaptor (5) is in the form of two associated clevises (5a and 5b), the lower clevis (5b) being articulated on the vertical shaft (2) of the grab bucket, while the upper one (5b) via its cheeks forms two hooks (7) opening downwards, onto which lateral extensions (4a) of the shaft (4) for articulation of the member for fastening onto the arm (1) are hooked. The axis of the shaft (4) and that of the shaft (6) for articulation on the grab bucket are offset by 90@. Means are provided for locking the extensions (4a) into the hooks (7). <IMAGE>

Description

La présente invention est relative à un adaptateur pour fixer une benne preneuse à l'extrémité d'une pelle hydraulique ou analogue.The present invention relates to an adapter for fixing a clamshell to the end of a hydraulic shovel or the like.

Actuellement, on connaît des dispositifs permettant de fixer rapidement, par encliquetage automatique, un godet à l'extrémité du bras d'une pelle.Currently, devices are known for quickly fixing, by automatic snap-fastening, a bucket at the end of the arm of a shovel.

Un tel dispositif est décrit dans la demande de brevet Français publiée sous le Numéro 2 657 596. Ce dispositif comporte un organe d'accrochage articulé sur le bras de la pelle. Ce dispositif comporte deux flans identiques reliés rigidement. L'organe d'accrochage est relié indirectement au bras de la pelle par des biellettes permettant, sous l'action d'un vérin, de le faire pivoter par rapport audit bras autour de l'axe de l'arbre précité.Such a device is described in the French patent application published under the number 2 657 596. This device comprises a hooking member articulated on the arm of the shovel. This device comprises two identical blanks rigidly connected. The attachment member is indirectly connected to the arm of the shovel by rods allowing, under the action of a jack, to rotate it relative to said arm about the axis of the aforementioned shaft.

Lorsqu'il est nécessaire d'accrocher une benne preneuse au bras d'une pelle, il faut démonter l'organe d'accrochage précité avec tous les inconvénients que cela comporte.When it is necessary to hook a clamshell to the arm of a shovel, it is necessary to disassemble the above-mentioned hooking member with all the disadvantages that this entails.

Il faut signaler, aussi, que la fixation de la benne preneuse au bras de la pelle s'effectue par l'entremise d'un organe de suspension qui nécessite la mise en place d'un arbre d'articulation. Cette opération est toujours longue.It should also be noted that the attachment of the clamshell bucket to the arm of the shovel is effected by means of a suspension member which requires the installation of a hinge shaft. This operation is always long.

Le but de l'invention est de réaliser un adaptateur permettant d'accrocher automatiquement une benne preneuse au bras d'une pelle muni d'un organe d'accrochage tel que celui décrit dans la demande de brevet français précitée.The object of the invention is to provide an adapter for automatically hooking a clamshell to the arm of a shovel provided with a hooking member such as that described in the aforementioned French patent application.

Selon l'invention, cet adaptateur se présente sous la forme de deux chapes associées par leur partie médiane, respectivement inférieure et supérieure, la chape inférieure s'articulant sur l'arbre vertical usuel de la benne preneuse tandis que celle supérieure forme par ses ailes deux crochets, s'ouvrant vers le bas, sur lesquels s'accrochent des extensions latérales de l'arbre d'articulation de l'organe d'accrochage au bras de la pelle.According to the invention, this adapter is in the form of two yokes associated by their middle part, respectively lower and upper, the lower yoke hinging on the usual vertical shaft of the clamshell while the upper one forms by its wings two hooks, opening downwards, on which hang lateral extensions of the articulation shaft of the attachment member to the arm of the shovel.

Les axes d'articulation des deux chapes de l'adaptateur sont décalés de 90°.The axes of articulation of the two yokes of the adapter are offset by 90 °.

La rotation de l'adaptateur, autour de l'arbre d'articulation de la chape inférieure, est freinée en permanence de façon à ce que ledit adaptateur ne puisse pas basculer sous l'effet de son propre poids mais reste dans l'alignement de l'arbre de la benne preneuse à laquelle il est fixé.The rotation of the adapter, around the articulation shaft of the lower yoke, is permanently braked so that said adapter cannot tilt under the effect of its own weight but remains in alignment with the clamshell shaft to which it is attached.

D' autres caractéristiques de l'invention ressortiront mieux par la description qui va suivre faite en se référant aux dessins annexés à titre d'exemple indicatif seulement, sur lesquels:

  • La figure 1 montre, en vue de côté, l'utilisation de l'adaptateur de l'invention, tous les éléments connus ont été représentés en traits mixtes;
  • La figure 2 est la vue de côté de la figure 1, sur cette figure le bras de la pelle n'a pas été représenté;
  • La figure 3 est une vue en coupe partielle effectuée selon la ligne III-III de la figure 2 ;
  • Les figures 4 et 5 sont des vues analogues à celle 3 ;
  • La figure 6 est une vue en coupe effectuée selon la ligne VI-VI de la figure 5.
Other characteristics of the invention will emerge more clearly from the description which follows, made with reference to the accompanying drawings by way of indicative example only, in which:
  • Figure 1 shows, in side view, the use of the adapter of the invention, all known elements have been shown in broken lines;
  • Figure 2 is the side view of Figure 1, in this figure the arm of the shovel has not been shown;
  • Figure 3 is a partial sectional view taken along line III-III of Figure 2;
  • Figures 4 and 5 are views similar to that 3;
  • FIG. 6 is a sectional view taken along line VI-VI of FIG. 5.

En se reportant aux figures 1 et 2, on voit que le problème à résoudre consiste à accrocher une benne preneuse, d'un type connu, au bras I d'une pelle, la représentantion de la benne preneuse étant limitée à celle de son arbre 2, vertical de suspension. Le bras 1 est pourvu d'un organe d'accrochage du genre de celui décrit dans le demande de brevet Français publiée sous le N° 2 657596.Referring to Figures 1 and 2, it can be seen that the problem to be solved consists in attaching a clamshell, of a known type, to the arm I of a shovel, the representation of the clamshell being limited to that of its shaft 2, vertical suspension. The arm 1 is provided with a hooking member of the kind described in the French patent application published under No. 2 657596.

La représentation de l'organe d'accrochage précité est limitée à ses deux flasques 3, en forme de L, réunies, entre autres, par un arbre 4 traversant, de la façon connue, le bras 1.The representation of the above-mentioned hooking member is limited to its two L-shaped flanges 3, joined, inter alia, by a shaft 4 passing through, in known manner, the arm 1.

Selon l'invention, ce résultat est obtenu à l'aide d'un adaptateur 5 se présentant sous la forme de deux chapes 5a et 5b.According to the invention, this result is obtained using an adapter 5 in the form of two yokes 5a and 5b.

La chape inférieure 5b se fixe, par l'entremise d'un arbre 6, sur l'arbre 2 de façon à ce que l'adaptateur 5 reste dans la position représentée sur la figure 1 lorsque la benne preneuse est libre, l'articulation dudit adaptateur sur l'arbre 2 étanr freinée pour s'opposer à son pivotement sous l'effet de son poids. Ce moyen de freinage est à la portée de l'homme de l'art et n'a pas été représenté.The lower yoke 5b is fixed, by means of a shaft 6, to the shaft 2 so that the adapter 5 remains in the position shown in Figure 1 when the clamshell is free, the articulation said adapter on the shaft 2 is braked to oppose its pivoting under the effect of its weight. This braking means is within the reach of ordinary skill in the art and has not been shown.

Les ailes de la chape supérieure 5a forment deux crochets 7.The wings of the upper yoke 5a form two hooks 7.

Les extrémités de l'arbre 4 s'étendent au-delà des flasques 3 de l'organe d'accrochage en deux extensions latérales 4a. De cette façon, le conducteur de la pelle peut engager les extensions 4a dans les crochets 7 par une manoeuvre judicieuse du bras 1 sans descendre de son engin.The ends of the shaft 4 extend beyond the flanges 3 of the attachment member in two lateral extensions 4a. In this way, the driver of the shovel can engage the extensions 4a in the hooks 7 by judicious operation of the arm 1 without getting off his machine.

Il faut noter que les chapes de l'adaptateur sont disposées de façon à ce que les axes des arbres 4 et 6 soient orthogonaux.It should be noted that the yokes of the adapter are arranged so that the axes of the shafts 4 and 6 are orthogonal.

Comme durant son utilisation la benne preneuse est soumise à des chocs susceptibles de provoquer son décrochage, l'invention vise aussi un dispositif de verrouillage.As during its use the clamshell is subjected to shocks likely to cause it to stall, the invention also relates to a locking device.

La pointe de chaque crochet 7 présente, dans son plan, une fente 8 dans laquelle est articulée une came 9, au moyen d'un arbre 10, présentant un extension 9a soumise à l'action d'un ressort 11 qui tend à faire pivoter ladite came selon la flèche F₁. Au repos, c'est-à-dire lorsque l'adaptateur n'est pas utilisé la came 9 s'étend en travers de la fente du crochet. Une butée, non représentée, peut être utilisée pour limiter la rotation de la came 9 selon la flèche F₁ mais l'expérience a montré que le ressort 11, qui est alors détendu et à spires jointives, peut remplir cette fonction.The tip of each hook 7 has, in its plane, a slot 8 in which is articulated a cam 9, by means of a shaft 10, having an extension 9a subjected to the action of a spring 11 which tends to pivot said cam according to arrow F₁. At rest, that is to say when the adapter is not used, the cam 9 extends across the slot of the hook. A stop, not shown, can be used to limit the rotation of the cam 9 along the arrow F₁ but experience has shown that the spring 11, which is then relaxed and with contiguous turns, can fulfill this function.

Le profil 9b de la came 9 est tel que si R₁ est la distance séparant l'axe de l'arbre 10 de l'extrémité supérieure du profil 9b et si R₂ est la distance séparant ledit axe et l'extrémité inférieure dudit profil, R₁ est supérieur à R₂.The profile 9b of the cam 9 is such that if R₁ is the distance separating the axis of the shaft 10 from the upper end of the profile 9b and if R₂ is the distance separating said axis and the lower end of said profile, R₁ is greater than R₂.

Pour accrocher la benne preneuse, on fait pénétrer les extensions 4a dans les crochets 7 et, sous l'action de ces dernières (figure 1), les cames 9 pivotent et s'escamotent dans les fentes 8 en étirant les ressorts 11.To hang the clamshell, the extensions 4a are made to penetrate the hooks 7 and, under the action of the latter (FIG. 1), the cams 9 pivot and retract in the slots 8 by stretching the springs 11.

Lorsque les extensions sont au fond des crochets 7, les ressorts 11 se détendent et les cames prennent appui contre lesdites extensions (figure 4). Dans cette position, les extensions 4a sont fermement maintenues et aucun jeu n'est possible entre elle et les crochets.When the extensions are at the bottom of the hooks 7, the springs 11 relax and the cams bear against said extensions (FIG. 4). In this position, the extensions 4a are firmly held and no play is possible between it and the hooks.

Comme l'adaptateur doit pouvoit pivoter autour de l'axe de l'arbre 4 des bagues 12 sont montées librement sur les extémités dudit arbre et c'est sur ces dernières que les cames 9 prennent appui en les immobilisant en rotation, lesdites bagues formant ainsi des paliers pour les extrémités dudit arbre 4.As the adapter must be able to pivot around the axis of the shaft 4 rings 12 are freely mounted on the ends of said shaft and it is on these ends that the cams 9 bear while immobilizing them in rotation, said rings forming thus bearings for the ends of said shaft 4.

Pour faciliter l'introduction des extensions 4a dans les crochets, des bagues 13, à portées coniques, sont montées sur les extrémités de l'arbre 4 et interposées entre les flasques 3 et les bagues 12.To facilitate the introduction of the extensions 4a into the hooks, rings 13, with conical surfaces, are mounted on the ends of the shaft 4 and interposed between the flanges 3 and the rings 12.

Pour permettre le décrochage de la benne preneuse, il est nécessaire d'escamoter complètement les cames 9 et de les maintenir escamotées.To allow the clamshell to unhook, it is necessary to completely retract the cams 9 and to keep them retracted.

A cet effet, chaque crochet présente un levier 13 articulé dans la fente 8 par l'une de ses extrémités par l'entremise d'un arbre 14 et présentant, à l'autre, un cran 15. En position de repos, le levier 13 repose par gravité sur le sommet 16 du crochet 7.To this end, each hook has a lever 13 articulated in the slot 8 by one of its ends by means of a shaft 14 and having, at the other, a notch 15. In the rest position, the lever 13 rests by gravity on the top 16 of the hook 7.

Si, à partir de la position représentée sur la figure 4, on désire décrocher l'adaptateur, on repousse, manuellement la came 9 pour la faire pivoter selon la flèche F₂. Durant cette rotation, la came 9 pénètre totalement dans la fente 8, rencontre le levier 13 qui pivote dans le même sens, et le doigt 17, prévu à la partie supérieure de ladite came, pénètre dans le cran 15. De cette façon, les cames 9 sont maintenues escamotées et il est possible de dégager les extensions 4a en manoeuvrant le bras 1.If, from the position shown in Figure 4, we want to unhook the adapter, we push, manually the cam 9 to rotate it according to arrow F₂. During this rotation, the cam 9 fully penetrates into the slot 8, meets the lever 13 which pivots in the same direction, and the finger 17, provided at the upper part of said cam, penetrates into the notch 15. In this way, the cams 9 are kept retracted and it is possible to disengage the extensions 4a by operating the arm 1.

De préférence, l'arbre 14 est utilisé pour permettre l'accrochage du ressort 11 correspondant.Preferably, the shaft 14 is used to allow the attachment of the corresponding spring 11.

Claims (5)

1- Adaptateur pour fixer une benne preneuse à l'extrémité du bras (1) d'une pelle comportant un organe d'accrochage (3) articulé à l'extrémité dudit bras par l'entremise d'un arbre (4), caractérisé en ce que l'adaptateur (5) se présente sous la forme de deux chapes associées (5a et 5b), la chape inférieure (5b) s'articulant sur l'arbre vertical (2) de la benne preneuse, tandis que celle supérieure (5b) forme par ses ailes deux crochets (7), s'ouvrant vers le bas, sur lesquels s'accrochent des extensions latérales (4a) d'articulation de l'organe d'accrochage sur le bras (1). 1- Adapter for fixing a clamshell bucket to the end of the arm (1) of a shovel comprising a hooking member (3) articulated at the end of said arm by means of a shaft (4), characterized in that the adapter (5) is in the form of two associated yokes (5a and 5b), the lower yoke (5b) hinging on the vertical shaft (2) of the clamshell, while the upper one (5b) forms by its wings two hooks (7), opening downwards, on which hang lateral extensions (4a) for articulation of the hooking member on the arm (1). 2- Adaptateur selon la revendication 1, caractérisé en ce que l'axe de l'arbre (4) et celui de l'arbre (6) d'articulation sur la benne preneuse sont décalés de 90°.
3- Adaptateur selon l'une quelconque des revendications 1 à 2, caractérisé en ce que des moyens sont prévus pour verrouiller les extensions (4a) dans les crochets (7). 2- Adapter according to claim 1, characterized in that the axis of the shaft (4) and that of the shaft (6) of articulation on the clamshell are offset by 90 °.
3- Adapter according to any one of claims 1 to 2, characterized in that means are provided for locking the extensions (4a) in the hooks (7). 4- Adaptateur selon la revendication 3, caractérisé en ce que chaque crochet (7) présente, dans son plan, une fente (8) dans laquelle est articulée une came (9) susceptible, sous l'action d'un ressort (11) d'obstruer le crochet (7), ladite came étant susceptible de s'escamoter à l'intérieur de ladite fente en étirant ledit ressort. 4- adapter according to claim 3, characterized in that each hook (7) has, in its plane, a slot (8) in which is articulated a cam (9) capable, under the action of a spring (11) obstructing the hook (7), said cam being capable of being retracted inside said slot by stretching said spring. 5- Adaptateur selon la revendication 4, caractérisé en ce que des moyens sont prévus pour maintenir les cames (9) totalement escamotées à l'intérieur des fentes (8). 5- adapter according to claim 4, characterized in that means are provided for holding the cams (9) fully retracted inside the slots (8). 6- Adaptateur selon l'une quelconque des revendications I à 5, caractérisé en ce que les cames (9) prennent appui, en position de verrouillage, contre des bagues (12) montées librement sur les extensions (4a) de l'arbre (4). 6- Adapter according to any one of claims I to 5, characterized in that the cams (9) bear, in the locked position, against rings (12) freely mounted on the extensions (4a) of the shaft ( 4).
EP94400593A 1993-04-02 1994-03-18 Device for fixing a grab bucket to a shovel Withdrawn EP0618333A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9303882A FR2703346B1 (en) 1993-04-02 1993-04-02 Device for attaching a clamshell to the end of a shovel.
FR9303882 1993-04-02

Publications (1)

Publication Number Publication Date
EP0618333A1 true EP0618333A1 (en) 1994-10-05

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EP94400593A Withdrawn EP0618333A1 (en) 1993-04-02 1994-03-18 Device for fixing a grab bucket to a shovel

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EP (1) EP0618333A1 (en)
FR (1) FR2703346B1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4087010A (en) * 1977-01-31 1978-05-02 Stormon Harry J Apparatus for mounting a hand-held paving breaker on backhoe attachments
US4243356A (en) * 1978-03-30 1981-01-06 Caterpillar Mitsubishi Ltd. Quick coupler
US4761113A (en) * 1986-06-20 1988-08-02 J. I. Case Company Quick coupler assembly
DE4213478A1 (en) * 1991-07-19 1993-01-21 Juergen Nagler Coupling for attaching tools to crane arm - comprising shackle type connection with U-type section swivel connected to crane arm

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4087010A (en) * 1977-01-31 1978-05-02 Stormon Harry J Apparatus for mounting a hand-held paving breaker on backhoe attachments
US4243356A (en) * 1978-03-30 1981-01-06 Caterpillar Mitsubishi Ltd. Quick coupler
US4761113A (en) * 1986-06-20 1988-08-02 J. I. Case Company Quick coupler assembly
DE4213478A1 (en) * 1991-07-19 1993-01-21 Juergen Nagler Coupling for attaching tools to crane arm - comprising shackle type connection with U-type section swivel connected to crane arm

Also Published As

Publication number Publication date
FR2703346B1 (en) 1995-05-19
FR2703346A1 (en) 1994-10-07

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