EP0438931B1 - Device for connecting a bucket, or the like, to the boom end of a loader - Google Patents
Device for connecting a bucket, or the like, to the boom end of a loader Download PDFInfo
- Publication number
- EP0438931B1 EP0438931B1 EP90403313A EP90403313A EP0438931B1 EP 0438931 B1 EP0438931 B1 EP 0438931B1 EP 90403313 A EP90403313 A EP 90403313A EP 90403313 A EP90403313 A EP 90403313A EP 0438931 B1 EP0438931 B1 EP 0438931B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bucket
- shaft
- arm
- hooks
- hooking member
- 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
Links
- 210000005069 ears Anatomy 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/006—Pivot joint assemblies
-
- 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
- E02F3/3622—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with a hook and a locking element acting on a pin
Definitions
- the present invention relates to improvements to devices for fixing a bucket, or the like, to the end of the arm of a loader.
- all the buckets, or the like have two shafts allowing, using a set of links, to fix the bucket to the end of the loader arm.
- Document DE-A-3832266 describes a device for fixing a bucket at the end of the arm of a loader, comprising a hooking member articulated on the arm to which said arm is connected by rods, said member comprising hooks and means for automatically locking on the bucket.
- This locking device using a pivoting split sleeve, does not allow effective jamming or automatic backlash.
- the document WO-A-8801322 describes a device using locking cams whose rotation is controlled manually.
- the present invention which overcomes these drawbacks relates to a device for fixing a bucket, comprising a beam, at the end of an arm of a loader, comprising a hooking member articulated by a shaft on the arm to which said arm it is connected by usual connecting rods, said member comprising at one of its ends hooks and, at the other, means for automatically locking, during the rotation of said member around the axis of the beam, on the bucket which has means for cooperating with those of said member, characterized in that the latching member is in the form of (L) and comprises at one of the ends of its branches hooks whose opening is directed towards the end of the other branch which has means for automatically locking constituted by cams which can pivot, under the action of springs, around the axis of a shaft carried by said hooking member and located towards the end of the branch not comprising the hooks and in that the means provided on the bucket, for cooperating with those of the attachment member, consist of a cradle in which the abovementioned shaft can come to rest,
- 1 is the end of the usual arm of a loader on which two connecting rods 2 are hinged simultaneously subjected to the action of a jack 3. (fig. 2).
- One or two links 4 are articulated on the links 2.
- a hooking member 5 is used which is connected to the arm 1 directly by means of an axis 6 and, indirectly, by means of the rods 4 by means of an axis 7. Therefore , it is understood that by actuating the jack 3 it is possible to rotate the member 5.
- the member 5 substantially affects, in side view, the shape of an L and therefore comprises two branches 5a and 5b. In fact, and as is apparent from the drawings, the member 5 is double, the two parts being rigidly connected to one another.
- the branch 5a has at its end a hook 8 constituted by a semi-circular recess directed towards the branch 5b.
- the branch 5b has at its end, at least, a cam 9 capable of pivoting around the axis of a shaft 10, parallel to the axes 6 and 7, and carried by the member 5.
- the cam 9 is carried by a sleeve 11, pivoting on the shaft 10, and is subjected to the action of a spring 12, such as that shown in FIG. 9, tending to pivot the cam towards the hook 8.
- the pivoting of the sleeves 11 is limited by a finger 13 of the shaft 10 cooperating with a groove 14 of said sleeve.
- the bucket in the usual way, has two blanks 15a joined by a bottom 15b and by a rear part 15c.
- the sides of the cup are joined, at their upper part, by a beam 16, forming a tree, the usefulness of which will appear later.
- the rear part 15c of the bucket has two ears 17 joined by a shaft 18.
- Each ear 17 has a cradle 19, constituted by a semi-circular recess whose radius is substantially equal to that of the shaft 10.
- the cylinder 3 is then stretched, which has the effect of rotating the member 5 according to the arrow F1.
- the cams 9 meet the shaft 18 and pivot, in the same direction, by compressing the springs 12 (fig.4).
- each cam is provided with a sheath 20 into which the end of a lever 21 can be introduced, as shown in FIGS. 6 and 7, the unlocking being effected by manually pivoting the levers 21 according to arrow F1.
- ramps 22 are provided on the hooks 8 and can cooperate with ramps 23 provided on the beam 16.
- the rear part 15c can have openings 24 for the passage of the hooks 8.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Shovels (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Replacement Of Web Rolls (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Abstract
Description
La présente invention est relative à des perfectionnements aux dispositifs pour fixer un godet, ou analogue, à l'extrémité du bras d'un chargeur.The present invention relates to improvements to devices for fixing a bucket, or the like, to the end of the arm of a loader.
D'une façon générale, tous les godets, ou analogues, comportent deux arbres permettant, à l'aide d'un jeu de biellettes, de fixer le godet à l'extrémité du bras du chargeur.In general, all the buckets, or the like, have two shafts allowing, using a set of links, to fix the bucket to the end of the loader arm.
Avec ce type de matériel se pose un problème important lorsqu'il s'agit de changer le godet pour le remplacer, par exemple, par un godet présentant d'autres dimensions. En effet, dans ce cas, le conducteur de l'engin doit extraire les deux arbres précités, positionner le bras par rapport à un autre godet et fixer ce dernier sur ledit bras. Toutes ces manoeuvres sont longues et ne peuvent pas, en général, être exécutées par une seule personne.With this type of material, there is an important problem when it comes to changing the bucket to replace it, for example, with a bucket having other dimensions. Indeed, in this case, the operator of the machine must extract the two aforementioned shafts, position the arm relative to another bucket and fix the latter on said arm. All these maneuvers are long and generally cannot be carried out by one person.
On a déjà proposé des dispositifs dans lesquels l'extraction des arbres n'était plus nécessaire, le bras s'accrochant automatiquement sur le godet, mais de tels dispositifs ne donnent pas satisfaction car le verrouillage et le déverrouillage du godet doivent s'effectuer manuellement.Devices have already been proposed in which the extraction of the trees was no longer necessary, the arm clinging automatically to the bucket, but such devices are not satisfactory because the locking and unlocking of the bucket must be carried out manually. .
Le document DE-A-3832266 décrit un dispositif pour fixer un godet à l'extrémité du bras d'un chargeur, comportant un organe d'accrochage articulé sur le bras auquel dit bras il est relié par des biellettes, ledit organe comportant des crochets et des moyens pour se verrouiller automatiquement sur le godet. Ce dispositif de verrouillage, utilisant un manchon fendu pivotant ne permet pas un coincement efficace ni le rattrapage automatique des jeux.Document DE-A-3832266 describes a device for fixing a bucket at the end of the arm of a loader, comprising a hooking member articulated on the arm to which said arm is connected by rods, said member comprising hooks and means for automatically locking on the bucket. This locking device, using a pivoting split sleeve, does not allow effective jamming or automatic backlash.
Le document US-A-4836741 décrit un dispositif nécessitant une intervention manuelle pour fixer le godet.Document US-A-4836741 describes a device requiring manual intervention to fix the bucket.
Le document WO-A-8801322 décrit un dispositif faisant appel à des cames de verrouillage dont la rotation est commandée manuellement.The document WO-A-8801322 describes a device using locking cams whose rotation is controlled manually.
La présente invention qui remédie à ces inconvénients est relative à un dispositif pour fixer un godet, comportant une poutre, à l'extrémité d'un bras d'un chargeur, comportant un organe d'accrochage articulé par un arbre sur le bras auquel dit bras il est relié par des biellettes usuelles, ledit organe comportant à l'une de ses extrémités des crochets et, à l'autre, des moyens pour se verrouiller automatiquement, lors de la rotation dudit organe autour de l'axe de la poutre, sur le godet qui présente des moyens pour coopérer avec ceux dudit organe, caractérisé en ce que l'organe d'accrochage est en forme d' (L) et comporte à l'une des extrémités de ses branches des crochets dont l'ouverture est dirigée vers l'extrémité de l'autre branche qui présente des moyens pour se verrouiller automatiquement constitués par des cames pouvant pivoter, sous l'action de ressorts, autour de l'axe d'un arbre porté par ledit organe d'accrochage et situé vers l'extrémité de la branche ne comportant pas les crochets et en ce que les moyens prévus sur le godet, pour coopérer avec ceux de l'organe d'accrochage, sont constitués par un berceau dans lequel peut venir reposer l'arbre précité, lors de la rotation de l'organe d'accrochage, et par un arbre sous lequel lesdites cames prennent appui, sous l'action de ressorts lorsque ledit arbre est disposé dans le berceau.The present invention which overcomes these drawbacks relates to a device for fixing a bucket, comprising a beam, at the end of an arm of a loader, comprising a hooking member articulated by a shaft on the arm to which said arm it is connected by usual connecting rods, said member comprising at one of its ends hooks and, at the other, means for automatically locking, during the rotation of said member around the axis of the beam, on the bucket which has means for cooperating with those of said member, characterized in that the latching member is in the form of (L) and comprises at one of the ends of its branches hooks whose opening is directed towards the end of the other branch which has means for automatically locking constituted by cams which can pivot, under the action of springs, around the axis of a shaft carried by said hooking member and located towards the end of the branch not comprising the hooks and in that the means provided on the bucket, for cooperating with those of the attachment member, consist of a cradle in which the abovementioned shaft can come to rest, during the rotation of the attachment member, and by a shaft under which said cams bear, under the action of springs when said shaft is disposed in the cradle.
La présente invention sera mieux comprise par la description qui va suivre, faite en se référant aux dessins annexés, à titre d'exemple indicatif seulement, sur lesquels:
- la figure 1 est une vue, en perspective, montrant le godet et l'organe d'accrochage permettant la mise en oeuvre du dispositif de l'invention;
- les figures 2 à 5 sont des vues de côté montrant l'accrochage d'un godet;
- les figures 6 à 8 sont des vues, analogues à celle 2,montrant le décrochage du godet;
- la figure 9 est une vue partielle et à plus grande échelle montrant les cames de verrouillage;
- la figure 10 est une vue en coupe, effectuée selon la ligne XX, de la figure 9.
- Figure 1 is a perspective view showing the bucket and the attachment member allowing the implementation of the device of the invention;
- Figures 2 to 5 are side views showing the attachment of a bucket;
- Figures 6 to 8 are views, similar to that 2, showing the release of the bucket;
- Figure 9 is a partial view on a larger scale showing the locking cams;
- FIG. 10 is a sectional view, taken along line XX, of FIG. 9.
En se reportant aux dessins et selon un mode de réalisation, on voit que 1 est l'extrémité du bras usuel d'un chargeur sur laquelle s'articulent deux biellettes 2 soumises simultanément à l'action d'un vérin 3.(fig.2). Sur les biellettes 2 s'articulent une ou deux biellettes 4.Referring to the drawings and according to one embodiment, it can be seen that 1 is the end of the usual arm of a loader on which two connecting rods 2 are hinged simultaneously subjected to the action of a
Selon l'invention,on utilise un organe d'accrochage 5 relié au bras 1 directement par l'entremise d'un axe 6 et, indirectement, par l'entremise des biellettes 4 à l'aide d'un axe 7. Dès lors, on comprend qu'en actionnant le vérin 3 il est possible de faire pivoter l'organe 5.According to the invention, a hooking
L'organe 5 affecte sensiblement, en vue de côté, la forme d'un L et comporte donc deux branches 5a et 5b. En fait, et comme cela ressort des dessins, l'organe 5 est double, les deux parties étant reliées rigidement l'une à l'autre.The
La branche 5a présente à son extrémité un crochet 8 constitué par un évidement semi-circulaire dirigé vers la branche 5b. La branche 5b présente à son extrémité, au moins, une came 9 susceptible de pivoter autour de l'axe d'un arbre 10, parallèle aux axes 6 et 7, et portée par l'organe 5.The
La came 9 est portée par un manchon 11, pivotant sur l'arbre 10, et est soumise à l'action d'un ressort 12, tel que celui représenté sur la figure 9, tendant à faire pivoter la came vers le crochet 8.The
Le pivotement des manchons 11 est limité par un doigt 13 de l'arbre 10 coopérant avec une rainure 14 dudit manchon.The pivoting of the
Le godet, de la façon usuelle, présente deux flans 15a réunis par un fond 15b et par une partie arrière 15c.The bucket, in the usual way, has two
Selon l'invention, les flans du godets sont réunis, à leur partie supérieure, par une poutre 16, formant un arbre, dont l'utilité apparaîtra plus loin.According to the invention, the sides of the cup are joined, at their upper part, by a
La partie arrière 15c du godet présente deux oreilles 17 réunies par un arbre 18. Chaque oreille 17 présente un berceau 19, constitué par un évidement semi-circulaire dont le rayon est sensiblement égal à celui de l'arbre 10.The
Le fonctionnement du dispositif est le suivant:The operation of the device is as follows:
Initialement le godet repose sur le sol dans la position représentée sur la figure 2 et l'organe 5 est disposé de la façon montrée, sur la figure 2, c'est-à-dire que le vérin 3 est rétracté en partie.Initially the bucket rests on the ground in the position shown in Figure 2 and the
On avance alors l'engin de façon à placer les crochets 8 sous la poutre 16 puis on soulève le bras 1 (fig.3).We then advance the machine so as to place the
On étire alors le vérin 3 ce qui a pour effet de faire pivoter l'organe 5 selon la flèche F₁. Durant ce pivotement, les cames 9 rencontrent l'arbre 18 et pivotent, dans le même sens, en comprimant les ressorts 12 (fig.4).The
Lorsque l'arbre 18 repose dans les berceaux 19 les ressorts se détendent et les cames pivotent, en sens inverse, pour venir prendre appui sous l'arbre 10 (fig.5). Le godet est alors verrouillé.When the
Pour décrocher le godet il faut faire pivoter les cames 9 en sens inverse. A cet effet, chaque came est pourvue d'un fourreau 20 dans lequel on peut introduire l'extrémité d'un levier 21, comme montré sur les figures 6 et 7, le déverrouillage s'effectuant en faisant pivoter, manuellement,les leviers 21 selon la flèche F₁.To unhook the bucket, the
Naturellement, le déverrouillage s'effectue lorsque le godet est en position soulevée, dans la position représentée sur la figure 6 par exemple. A ce moment, le godet bascule et occupe, par gravité, la position représentée sur la figure 8, position identique à celle de la figure 3.Naturally, the unlocking is carried out when the bucket is in the raised position, in the position shown in Figure 6 for example. At this moment, the bucket tilts and occupies, by gravity, the position shown in FIG. 8, position identical to that of FIG. 3.
Il suffit alors, de poser le godet sur le sol et de dégager l'organe d'accrochage 5.It then suffices to place the bucket on the ground and to release the
Bien entendu, la présente invention ne se limite pas au mode de réalisation décrit et représenté, mais s'étend, au contraire, à toutes variantes de formes et dimensions.Of course, the present invention is not limited to the embodiment described and shown, but extends, on the contrary, to all variants of shapes and dimensions.
C'est ainsi entre autres, que des moyens sont prévus pour faciliter le positionnement du bras par rapport au godet. A cet effet, des rampes 22 sont prévues sur les crochets 8 et peuvent coopérer avec des rampes 23 prévues sur la poutre 16.Thus, among other things, means are provided to facilitate positioning of the arm relative to the bucket. To this end,
C'est ainsi encore, que la partie arrière 15c peut présenter des ouvertures 24 de passage des crochets 8.It is thus also that the
Claims (2)
- Device for fixing a bucket and comprising a girder (16) at the end of an arm (1) of a loader comprising a hooking member joined by a shaft (6) to the arm (1) and connected to said arm by normal rocker bars (2-4), said member comprising hooks (8) at one of its ends and at the other end means to lock automatically when said member (5) is rotated around the axis of the girder (16) on the bucket which is provided with means to cooperate with those of said member, wherein the hooking member has the shape of an L and comprises hooks (8) at one of the ends of its branches, the opening of said hooks being directed towards the end of the other branch which has means able to lock automatically constituted by cams (9) able to pivot under the action of springs (12) around the axis of a shaft (10) borne by said hooking member (5) and situated towards the end of the branch not comprising any hooks (8), and wherein the means provided on the bucket for cooperating with those of the hooking member are constituted firstly by a cradle (19) in which said shaft (10) rests when the hooking member is rotated, and secondly by a shaft (18) under which said cams take support under the action of springs (12) when said shaft is disposed in the cradle (19).
- Device according to claim 1, wherein each hook (8) has ramps able to cooperate with ramps (23) provided on the girder (16) so as to laterally immobilize the bucket with respect to the hooking member (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT9090403313T ATE105353T1 (en) | 1990-01-26 | 1990-11-23 | DEVICE FOR CONNECTING A SHOVEL OR LIKE TO THE BOOM END OF A LOADER. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9000911A FR2657596B1 (en) | 1990-01-26 | 1990-01-26 | DEVICE FOR FIXING A BUCKET, OR THE LIKE, AT THE END OF THE ARM OF A LOADER. |
| FR9000911 | 1990-01-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0438931A1 EP0438931A1 (en) | 1991-07-31 |
| EP0438931B1 true EP0438931B1 (en) | 1994-05-04 |
Family
ID=9393132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP90403313A Expired - Lifetime EP0438931B1 (en) | 1990-01-26 | 1990-11-23 | Device for connecting a bucket, or the like, to the boom end of a loader |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0438931B1 (en) |
| AT (1) | ATE105353T1 (en) |
| DE (1) | DE69008700T2 (en) |
| DK (1) | DK0438931T3 (en) |
| ES (1) | ES2052215T3 (en) |
| FR (1) | FR2657596B1 (en) |
Families Citing this family (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2708679B1 (en) * | 1993-08-06 | 1995-09-01 | Pel Job Groupe | Device for automatic tool gripping for earth-moving machinery or the like. |
| FR2725224B1 (en) | 1994-09-29 | 1997-04-18 | Morin Freres | IMPROVEMENTS ON DEVICES FOR ATTACHING A TOOL AT THE END OF THE ARM OF A HYDRAULIC SHOVEL OR THE LIKE |
| FR2725223B1 (en) * | 1994-09-29 | 1996-10-31 | Morin Freres | IMPROVEMENTS ON DEVICES FOR ATTACHING A TOOL AT THE END OF THE ARM OF A HYDRAULIC SHOVEL OR THE LIKE |
| FR2734872B1 (en) * | 1995-05-31 | 1997-07-04 | Morin Freres | DEVICE FOR PROTECTING A SPRING DRIVING A ROTATING MEMBER |
| US6227792B1 (en) | 1997-06-30 | 2001-05-08 | Caterpillar S.A.R.L. | Vertical engagement hydraulic tool coupler |
| US5984618A (en) * | 1997-06-30 | 1999-11-16 | Caterpillar Inc. | Box boom loader mechanism |
| US6860706B2 (en) | 1998-01-30 | 2005-03-01 | Caterpillar Inc. | Method of verifying coupling of an implement to a work machine |
| BE1012100A4 (en) * | 1998-03-02 | 2000-05-02 | Monsin Ladm Atel | Quick designed for assembly and removal of crane bacs. |
| FR2785952B1 (en) | 1998-11-12 | 2001-04-06 | Alain Husson | QUICK COUPLER FOR ATTACHING A TOOL AT THE END OF THE ARM OF A LOADER OR THE LIKE |
| FR2785951B1 (en) | 1998-11-12 | 2001-01-26 | Alain Husson | QUICK COUPLER FOR ATTACHING A TOOL AT THE END OF THE ARM OF A LOADER OR THE LIKE |
| FR2809779B1 (en) * | 2000-05-31 | 2002-07-19 | Alain Husson | SAFETY DEVICE FOR QUICK COUPLER FOR ATTACHING A TOOL AT THE END OF THE ARM OF A LOADER OR THE LIKE |
| FR2854644B1 (en) * | 2003-05-09 | 2006-05-12 | Morin | DEVICE FOR RAPID ATTACHMENT OF EXCAVATION MACHINE TOOL |
| FR2854910B1 (en) * | 2003-05-12 | 2006-05-12 | Morin | DEVICE FOR MODIFYING THE KINEMATIC OF A HYDRAULIC SHOVEL TOOL |
| FR2900168B1 (en) * | 2006-04-21 | 2010-04-23 | Morin | COUPLER FOR MIXED UNLOCKING WORK EQUIPMENT |
| SE0801169L (en) * | 2008-05-20 | 2009-11-21 | Stig Sandberg | Arrangements for gear and attachment |
| FR2938560B1 (en) * | 2008-11-14 | 2012-06-08 | Smtpo Soc De Distrib De Materiel De Travaux Public D Oucques | CONNECTING DEVICE FOR A BUCKET FOR EXCAVATION MACHINE |
| ITPD20090042A1 (en) | 2009-03-10 | 2010-09-11 | Meccanica Breganzese S P A In Brev E Mb S P A | QUICK ATTACHMENT DEVICE BETWEEN THE ARM OF AN ARM OPERATING MACHINE, IN PARTICULAR THE ARM OF AN EXCAVATOR, AND AN EQUIPMENT TO IT REALLY ASSOCIATED, IN PARTICULAR A BUCKET AND SIMILAR. |
| FR2944533B1 (en) | 2009-04-17 | 2011-04-22 | Morin | CONNECTING DEVICE, QUICK ATTACH COUPLER, AND CONNECTING ASSEMBLY. |
| FR2944534B1 (en) | 2009-04-20 | 2016-09-23 | Morin | BLOCK MODULE FOR A FAST ATTACHING ASSEMBLY OF A TOOL ON A PUBLIC WORKS MACHINE. |
| FR2962458B1 (en) * | 2010-07-12 | 2013-05-31 | Jacques Pichard | RETRO BUCKET 2 IN 1 |
| FR3017139B1 (en) | 2014-02-04 | 2016-09-16 | Ateliers De Constructions Du Beaujolais | LOCKING DEVICE FOR THE CONNECTION BETWEEN TOOL AND ARM OF A PUBLIC WORKS MACHINE |
| US10246848B2 (en) * | 2016-01-11 | 2019-04-02 | Caterpillar Inc. | Upper hinge design for a bucket |
| DE102017130437A1 (en) * | 2017-12-19 | 2019-06-19 | Oilquick Deutschland Gmbh | Quick coupler, adapter and quick-change system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL168290C (en) * | 1978-09-25 | 1982-03-16 | Roelof Wijnand Laan | EXCAVATOR WITH A DEVICE FOR COUPLING A TOOL WITH A LIFTING DEVICE. |
| US4836741A (en) * | 1986-08-12 | 1989-06-06 | Consolidated Technologies, Corp. | Backhoe hitch apparatus |
| WO1988001322A1 (en) * | 1986-08-18 | 1988-02-25 | Paul Owen Jones | Improved hitch |
| AT392307B (en) * | 1987-09-25 | 1991-03-11 | Winkelbauer Franz | CLUTCH DEVICE |
-
1990
- 1990-01-26 FR FR9000911A patent/FR2657596B1/en not_active Expired - Lifetime
- 1990-11-23 DE DE69008700T patent/DE69008700T2/en not_active Expired - Lifetime
- 1990-11-23 ES ES90403313T patent/ES2052215T3/en not_active Expired - Lifetime
- 1990-11-23 EP EP90403313A patent/EP0438931B1/en not_active Expired - Lifetime
- 1990-11-23 DK DK90403313.1T patent/DK0438931T3/en active
- 1990-11-23 AT AT9090403313T patent/ATE105353T1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE69008700T2 (en) | 1994-10-13 |
| FR2657596B1 (en) | 1992-04-24 |
| ES2052215T3 (en) | 1994-07-01 |
| FR2657596A1 (en) | 1991-08-02 |
| DE69008700D1 (en) | 1994-06-09 |
| EP0438931A1 (en) | 1991-07-31 |
| DK0438931T3 (en) | 1994-09-05 |
| ATE105353T1 (en) | 1994-05-15 |
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