EP0381555A1 - Opening buckets of public works machines - Google Patents

Opening buckets of public works machines Download PDF

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Publication number
EP0381555A1
EP0381555A1 EP19900400201 EP90400201A EP0381555A1 EP 0381555 A1 EP0381555 A1 EP 0381555A1 EP 19900400201 EP19900400201 EP 19900400201 EP 90400201 A EP90400201 A EP 90400201A EP 0381555 A1 EP0381555 A1 EP 0381555A1
Authority
EP
European Patent Office
Prior art keywords
teeth
bucket
tooth
fork
shield
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Withdrawn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
EP19900400201
Other languages
German (de)
French (fr)
Inventor
Gilles Poncin
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.)
ARDENNES EQUIPMENT S.A.
Original Assignee
ARDENNES EQUIPMENT 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 ARDENNES EQUIPMENT SA filed Critical ARDENNES EQUIPMENT SA
Publication of EP0381555A1 publication Critical patent/EP0381555A1/en
Withdrawn legal-status Critical Current

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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
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2808—Teeth
    • 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
    • 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
    • E02F3/402—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with means for facilitating the loading thereof, e.g. conveyors
    • E02F3/404—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with means for facilitating the loading thereof, e.g. conveyors comprising two parts movable relative to each other, e.g. for gripping

Definitions

  • the present invention relates to public works equipment and more specifically to opening buckets.
  • buckets are generally constituted by a shield, substantially vertical, which is coupled to two movable arms carried by a self-propelled machine; at the upper part of this shield is hinged an equipment called “mobile pocket” which has two side walls connected to each other by a bottom.
  • the lower part of the shield has a blade.
  • the shield when the movable pocket is held in the high position, the shield can be used as a leveling blade; by bringing the mobile pocket against the shield, the front edge of the bottom of this pocket being provided with teeth, use the machine as a front loader; by raising and lowering this mobile pocket, the bucket / shield assembly can be used like a clamshell bucket to take up materials in heaps (sand, stones or others); finally, by maneuvering the bag, you can pinch products between the bottom of the bag and the blade and thus lift and transport them.
  • This arrangement has the disadvantage of requiring a fairly large number of articulation parts, which means that it is quite expensive; cause immobilization of the mobile pocket; and permanently weigh down the tool with the weight of this additional equipment.
  • the object of the present invention is to eliminate these drawbacks by proposing very simple equipment, which is easy to set up and remove.
  • the bucket according to the present invention comprises a frame 1, coupled in 2 to lifting arms, not shown, of a self-propelled public works machine, also not shown.
  • This chassis 1 is also connected to the self-propelled machine by a hydraulic cylinder making it possible to pivot it around the coupling pins 2.
  • This chassis 1 carries a shield 3, substantially vertical, provided at its base with a leveling blade 4.
  • This chassis 1 also carries a shaft 5 (or two journals arranged on the same axis) carrying a mobile pocket constituted by two lateral cheeks 6 and a bottom 7.
  • the cheeks 6 each have an extension 6a and these two extensions 6a are connected to each other by a shaft 8 to which is attached the end of the rod 9 of a jack 10 articulated to its other end to the coupling axis 2.
  • This pocket is shown in solid lines in the closed position, the rear 7a of its bottom 7 being in contact with the blade 4; and in dotted lines in the open position.
  • the front part of the bottom 7 of this movable pocket 6-7 is provided with teeth 7b.
  • a bucket constituted by the shield 3 and the mobile pocket 6-7 is known and is called multi-function bucket because it can be used: as a leveler, as a front loader, as a bucket and as a gripping tool.
  • this fork is constituted by a plurality of palletizing teeth 11 (at least two) pivotally mounted on at least two tilting yokes 12, these yokes being pivotally mounted on an axis 13 carried by supports 14 welded to the frame 1.
  • the teeth 11 can be brought into the retracted position behind the shield 3, as shown in dashed lines.
  • the palletizing fork constituted by the teeth 11, is locked in the inactive position, retracted, by locking pins 15 carried by supports 16, integral with the rear face of the shield 3; it is kept in the active position by its weight and by pressing against the front edge 17c of the bottom 7 of the movable pocket, the teeth 11 being arranged so as to fit between the teeth 7b.
  • This arrangement has the drawback of requiring a large number of parts to articulate the teeth 11 of the palletizing fork and of overloading the weight of the bucket, since these parts are not removable: the carrying capacity of the bucket is therefore reduced by 'as much.
  • the palletizing fork 20 is constituted by a plurality of teeth 21 whose front portion 21a intended to pass under the pallets is straight; the rear part 21b being curved so as to pass above the bottom 7 of the pocket 6-7; this rear part 21b being folded down so as to pass below the level of the rear edge 7a of said bottom 7 and beyond this edge; so that it can be pinched between the blade 4 and the rim 7a of the bottom 7.
  • each tooth 21 is provided with two stops: a first stop 22, located at the junction between the parts 21a and 21b, and shaped so that the front edge 7c of the bottom 7 is fitted between the underside of the teeth 21 and said stop 22; a second stop 23, constituted by a flat iron which comes to bear against the lower edge of the shield 3.
  • the teeth 21 are arranged between the teeth 7b disposed on the front edge 7c of the bottom of the pocket.
  • One can shape their side walls so that they fit between these teeth.
  • the teeth 7b are of the removable type in order to be able to be changed, that is to say are hollow and include a housing which is fitted on a fixed nose
  • the teeth 21 of the fork palletizing comprise a hollow housing of corresponding shape coming to be embedded on said fixed nose.

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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)
  • Pallets (AREA)

Abstract

Bucket of a public works appliance, of the type comprising a shield (3) equipped at its base with a levelling blade (4) and a movable pocket consisting of two pivoting side cheeks (6) connected by means of a bottom (7) having a front edge (7c) and a rear edge (7a). This bucket can, if desired, be equipped with a palletising fork (20) consisting of a plurality of teeth, the front part (21a) of which is rectilinear and the rear part (21b) of which is curved so as to pass round the bottom (7) of the movable pocket, each tooth being maintained in position on said bottom (7) by two stops, a front stop (22) gripping the front edge (7c) of the bottom (7) and a rear stop (23) bearing against the shield (3), the rear end of each tooth passing between the rear edge (7a) of the bottom (7) and the blade (4). <IMAGE>

Description

La présente invention se rapporte aux matériels de travaux publics et plus précisément aux godets ouvrants.The present invention relates to public works equipment and more specifically to opening buckets.

Ces godets sont en général constitués par un bouclier, sensiblement vertical, qui est attelé à deux bras mobiles portés par une machine automotrice ; à la partie supérieure de ce bouclier est articulé un équipement appelé "poche mobile" qui comporte deux parois latérales reliées l'une à l'autre par un fond. La partie basse du bouclier comporte une lame. Ainsi, lorsque la poche mobile est maintenue en position haute, on peut utiliser le bouclier comme une lame niveleuse ; on peut en ramenant la poche mobile contre le bouclier, le rebord avant du fond de cette poche étant muni de dents, utiliser l'engin comme un chargeur frontal ; on peut en relevant et abaissant cette poche mobile utiliser l'ensemble godet/bouclier comme une benne preneuse pour reprendre des matériaux en tas (sable, cailloux ou autres) ; on peut enfin en manoeuvrant la poche pincer des produits entre le fond de la poche et la lame et ainsi les soulever et les transporter.These buckets are generally constituted by a shield, substantially vertical, which is coupled to two movable arms carried by a self-propelled machine; at the upper part of this shield is hinged an equipment called "mobile pocket" which has two side walls connected to each other by a bottom. The lower part of the shield has a blade. Thus, when the movable pocket is held in the high position, the shield can be used as a leveling blade; by bringing the mobile pocket against the shield, the front edge of the bottom of this pocket being provided with teeth, use the machine as a front loader; by raising and lowering this mobile pocket, the bucket / shield assembly can be used like a clamshell bucket to take up materials in heaps (sand, stones or others); finally, by maneuvering the bag, you can pinch products between the bottom of the bag and the blade and thus lift and transport them.

Il est connu d'ajouter une fonction à ces godets à poche mobile en articulant à la partie supérieure du bouclier une fourche de palettisation que l'on escamote en la faisant basculer vers l'arrière dudit bouclier.It is known to add a function to these moving pocket buckets by hinging a palletizing fork at the upper part of the shield which is retracted by tilting it towards the rear of said shield.

Cette disposition présente l'inconvénient de nécessiter un assez grand nombre de pièces d'articulation, ce qui fait qu'elle est assez onéreuse; d'entraîner une immobilisation de la poche mobile ; et d'alourdir l'outil de façon permanente du poids de cet équipement supplémentaire.This arrangement has the disadvantage of requiring a fairly large number of articulation parts, which means that it is quite expensive; cause immobilization of the mobile pocket; and permanently weigh down the tool with the weight of this additional equipment.

La présente invention a pour objet de supprimer ces inconvénients en proposant un équipement très simple, facile à mettre en place et à enlever.The object of the present invention is to eliminate these drawbacks by proposing very simple equipment, which is easy to set up and remove.

A titre d'exemple non limitatif et pour faciliter la compréhension de l'invention, on a représenté aux dessins annexés :

  • Figure 1, une vue schématique en élévation latérale et en coupe partielle d'un godet ouvrant de type connu, comportant une fourche de palettisation escamotable;
  • Figure 2, une vue schématique en élévation latérale et en coupe partielle d'un godet ouvrant selon la présente invention.
By way of nonlimiting example and to facilitate understanding of the invention, the accompanying drawings show:
  • Figure 1, a schematic side elevational view in partial section of an opening bucket of known type, comprising a retractable palletizing fork;
  • Figure 2, a schematic side elevational view in partial section of an opening bucket according to the present invention.

En se reportant à la figure 1, on voit que le godet selon la présente invention comporte un châssis 1, attelé en 2 à des bras de levage, non représentés, d'un engin automoteur de travaux publics, également non représenté. Ce châssis 1 est en outre relié à l'engin automoteur par un vérin hydraulique permettant de le faire pivoter autour des axes d'attelage 2.Referring to Figure 1, we see that the bucket according to the present invention comprises a frame 1, coupled in 2 to lifting arms, not shown, of a self-propelled public works machine, also not shown. This chassis 1 is also connected to the self-propelled machine by a hydraulic cylinder making it possible to pivot it around the coupling pins 2.

Ce châssis 1 porte un bouclier 3, sensiblement vertical, muni à sa base d'une lame niveleuse 4. Ce châssis 1 porte également un arbre 5 (ou deux tourillons disposés sur le même axe) portant une poche mobile constituée par deux joues latérales 6 et un fond 7. Les joues 6 comportent chacune un prolongement 6a et ces deux prolongements 6a sont reliés l'un à l'autre par un arbre 8 auquel est attelée l'extrémité de la tige 9 d'un vérin 10 articulé à son autre extrémité à l'axe d'attelage 2. Au moyen du vérin 10, on peut donc faire pivoter la poche 6-7 autour de l'axe 5. Cette poche est représentée en traits pleins en position fermée, l'arrière 7a de son fond 7 étant en contact avec la lame 4 ; et en traits pointillés en position ouverte. La partie avant du fond 7 de cette poche mobile 6-7 est munie de dents 7b. Un tel godet constitué par le bouclier 3 et la poche mobile 6-7 est connu et est appelé godet multi-fonction du fait que l'on peut s'en servir : comme niveleur, comme chargeur frontal, comme benne et comme outil de préhension.This chassis 1 carries a shield 3, substantially vertical, provided at its base with a leveling blade 4. This chassis 1 also carries a shaft 5 (or two journals arranged on the same axis) carrying a mobile pocket constituted by two lateral cheeks 6 and a bottom 7. The cheeks 6 each have an extension 6a and these two extensions 6a are connected to each other by a shaft 8 to which is attached the end of the rod 9 of a jack 10 articulated to its other end to the coupling axis 2. By means of the jack 10, it is therefore possible to pivot the pocket 6-7 around the axis 5. This pocket is shown in solid lines in the closed position, the rear 7a of its bottom 7 being in contact with the blade 4; and in dotted lines in the open position. The front part of the bottom 7 of this movable pocket 6-7 is provided with teeth 7b. Such a bucket constituted by the shield 3 and the mobile pocket 6-7 is known and is called multi-function bucket because it can be used: as a leveler, as a front loader, as a bucket and as a gripping tool.

Il est connu de lui ajouter une cinquième fonction en lui adjoignant une fourche de palettisation escamotable. Toujours sur la figure 1, on voit que cette fourche est constituée par une pluralité de dents de palettisation 11 (au moins deux) montées à pivotement sur au moins deux chapes basculantes 12, ces chapes étant montées à pivotement sur un axe 13 porté par des supports 14 soudés au châssis 1. En faisant basculer par en haut à la fois les chapes 13 et les dents 11, on peut amener en position escamotée derrière le bouclier 3, les dents 11 comme cela est représenté en traits tiretés. De préférence, la fourche de palettisation, constituée par les dents 11, est bloquée en position inactive, escamotée, par des tétons de blocage 15 portés par des supports 16, solidaires de la face arrière du bouclier 3 ; elle est maintenue en position active par son poids et par appui contre le rebord avant 17c du fond 7 de la poche mobile, les dents 11 étant disposées de façon à s'emboîter entre les dents 7b.It is known to add a fifth function to it by adding a retractable palletizing fork to it. Still in FIG. 1, it can be seen that this fork is constituted by a plurality of palletizing teeth 11 (at least two) pivotally mounted on at least two tilting yokes 12, these yokes being pivotally mounted on an axis 13 carried by supports 14 welded to the frame 1. By tilting from above both the yokes 13 and the teeth 11, the teeth 11 can be brought into the retracted position behind the shield 3, as shown in dashed lines. Preferably, the palletizing fork, constituted by the teeth 11, is locked in the inactive position, retracted, by locking pins 15 carried by supports 16, integral with the rear face of the shield 3; it is kept in the active position by its weight and by pressing against the front edge 17c of the bottom 7 of the movable pocket, the teeth 11 being arranged so as to fit between the teeth 7b.

Cette disposition présente l'inconvénient de nécessiter un nombre important de pièces pour articuler les dents 11 de la fourche de palettisation et de surcharger le poids du godet, puisque ces pièces ne sont pas démontables : la capacité d'emport du godet est donc diminuée d'autant.This arrangement has the drawback of requiring a large number of parts to articulate the teeth 11 of the palletizing fork and of overloading the weight of the bucket, since these parts are not removable: the carrying capacity of the bucket is therefore reduced by 'as much.

En se reportant à la figure 2, on voit que selon l'invention, la fourche de palettisation 20 est constituée par une pluralité de dents 21 dont la partie avant 21a destinée à passer sous les palettes est rectiligne ; la partie arrière 21b étant recourbée de façon à passer au-dessus du fond 7 de la poche 6-7 ; cette partie arrière 21b étant repliée vers le bas de façon à passer en-dessous du niveau du rebord arrière 7a dudit fond 7 et au-delà de ce rebord ; de sorte qu'elle puisse être pincée entre la lame 4 et le rebord 7a du fond 7. De plus, chaque dent 21 est munie de deux butées : une première butée 22, située à la jonction entre les parties 21a et 21b, et conformée de façon que le rebord avant 7c du fond 7 vienne s'encastrer entre la face inférieure des dents 21 et ladite butée 22 ; une deuxième butée 23, constituée par un fer plat qui vient prendre appui contre le rebord inférieur du bouclier 3.Referring to Figure 2, we see that according to the invention, the palletizing fork 20 is constituted by a plurality of teeth 21 whose front portion 21a intended to pass under the pallets is straight; the rear part 21b being curved so as to pass above the bottom 7 of the pocket 6-7; this rear part 21b being folded down so as to pass below the level of the rear edge 7a of said bottom 7 and beyond this edge; so that it can be pinched between the blade 4 and the rim 7a of the bottom 7. In addition, each tooth 21 is provided with two stops: a first stop 22, located at the junction between the parts 21a and 21b, and shaped so that the front edge 7c of the bottom 7 is fitted between the underside of the teeth 21 and said stop 22; a second stop 23, constituted by a flat iron which comes to bear against the lower edge of the shield 3.

Pour mettre les dents 21 en place, il suffit de soulever légèrement la poche mobile 6-7, de mettre en place chaque dent 21 en amenant la gorge formée par la butée 22 et la face inférieure de la dent 21 contre le rebord avant 7c du fond 7 et de refermer la poche 6-7, ce qui fait passer la deuxième butée 23 derrière la lame 4 contre la base du bouclier 3. Le démontage des dents est aussi aisée : il suffit d'ouvrir la poche 6-7 et de retirer les dents 21.To put the teeth 21 in place, it suffices to slightly lift the movable pocket 6-7, to set up each tooth 21 by bringing the groove formed by the stop 22 and the underside of the tooth 21 against the front edge 7c of the bottom 7 and close the pocket 6-7, which makes the second stop 23 pass behind the blade 4 against the base of the shield 3. The disassembly of the teeth is also easy: just open the pocket 6-7 and remove teeth 21.

Cette disposition permet d'obtenir le même résultat que la disposition connue de la figure 1, mais avec des moyens beaucoup plus simples, considérablement moins onéreux et sans ajouter au godet un poids mort inutile lorsque la fourche de palettisation n'est pas utilisée.This arrangement makes it possible to obtain the same result as the known arrangement of FIG. 1, but with much simpler means, considerably less expensive and without adding unnecessary dead weight to the bucket when the palletizing fork is not used.

Bien évidemment, les dents 21 sont disposées entre les dents 7b disposées sur le rebord avant 7c du fond de la poche. On peut conformer leurs parois latérales de façon qu'elles s'emboîtent entre ces dents.Obviously, the teeth 21 are arranged between the teeth 7b disposed on the front edge 7c of the bottom of the pocket. One can shape their side walls so that they fit between these teeth.

Selon une variante de réalisation non représentée, lorsque les dents 7b sont du type démontable pour pouvoir être changer, c'est-à-dire sont creuses et comportent un logement venant s'encastrer sur un nez fixe, les dents 21 de la fourche de palettisation comportent un logement creux de forme correspondante venant s'encastrer sur ledit nez fixe. Cette disposition présente l'inconvénient de rendre nécessaire de démonter autant de dents 7b que l'on veut mettre en place de dents 21, mais a pour avantage que la fixation desdites dents 21 est beaucoup plus solide.According to a variant embodiment not shown, when the teeth 7b are of the removable type in order to be able to be changed, that is to say are hollow and include a housing which is fitted on a fixed nose, the teeth 21 of the fork palletizing comprise a hollow housing of corresponding shape coming to be embedded on said fixed nose. This provision has the disadvantage of making it necessary to disassemble as many teeth 7b that we want to set up teeth 21, but has the advantage that the fixing of said teeth 21 is much more solid.

Claims (4)

1. Godet d'engin de travaux publics du type comportant un bouclier (3), muni, à sa base d'une lame de nivellement (4) et une poche mobile constituée par deux joues latérales pivotantes (6) reliées par un fond (7) ayant un rebord avant (7c) et un rebord arrière (7a), caractérisé par le fait qu'il peut à volonté être muni d'une fourche de palettisation (20) constituée par une pluralité de dents (21) dont la partie avant (21a) est rectiligne et dont la partie arrière (21b) est recourbée pour contourner le fond (7) de la poche mobile (6-7) chaque dent (21) étant maintenue en position sur ledit fond (7) par deux butées, une butée avant (22) qui enserre le rebord avant (7c) du fond (7) et une butée arrière (23) qui prend appui contre le bouclier (3), l'extrémité arrière de chaque dent (21) passant entre le rebord arrière (7a) du fond (7) et la lame (4).1. Bucket of public works machine of the type comprising a shield (3), provided, at its base with a leveling blade (4) and a movable pocket constituted by two pivoting lateral cheeks (6) connected by a bottom ( 7) having a front edge (7c) and a rear edge (7a), characterized in that it can at will be provided with a palletizing fork (20) constituted by a plurality of teeth (21), the part of which front (21a) is rectilinear and the rear part (21b) of which is curved to bypass the bottom (7) of the movable pocket (6-7) each tooth (21) being held in position on said bottom (7) by two stops , a front stop (22) which encloses the front edge (7c) of the bottom (7) and a rear stop (23) which bears against the shield (3), the rear end of each tooth (21) passing between the rear edge (7a) of the bottom (7) and the blade (4). 2. Godet selon la revendication 1, dans lequel les dents (21) de la fourche de palettisation (20) sont disposées entre les dents (7b) du fond (7) de la poche mobile (6-7).2. Bucket according to claim 1, wherein the teeth (21) of the palletizing fork (20) are disposed between the teeth (7b) of the bottom (7) of the movable pocket (6-7). 3. Godet selon la revendication 2, dans lequel les rebords latéraux des dents (21) de la fourche de palettisation (20) sont conformés de façon à venir se bloquer entre deux dents (7b) adjacentes du fond (7) de la poche mobile (6-7).3. Bucket according to claim 2, wherein the lateral edges of the teeth (21) of the palletizing fork (20) are shaped so as to come to be blocked between two teeth (7b) adjacent the bottom (7) of the movable pocket (6-7). 4. Godet d'engin selon la revendication 1, caractérisé par le fait que la butée avant (22) de chaque dent (21) de la fourche de palettisation (20) est constituée par un logement creux qui vient s'encastrer sur le nez d'une dent démontable (7b) du fond (7) de la poche mobile (6-7), cette dent (7b) ayant au préalable été démontée.4. Bucket of machine according to claim 1, characterized in that the front stop (22) of each tooth (21) of the palletizing fork (20) is constituted by a hollow housing which is fitted on the nose a removable tooth (7b) from the bottom (7) of the movable pocket (6-7), this tooth (7b) having been dismantled beforehand.
EP19900400201 1989-01-25 1990-01-24 Opening buckets of public works machines Withdrawn EP0381555A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8900885A FR2642098B1 (en) 1989-01-25 1989-01-25 IMPROVEMENT IN OPENING BUCKETS OF PUBLIC WORKS MACHINES
FR8900885 1989-01-25

Publications (1)

Publication Number Publication Date
EP0381555A1 true EP0381555A1 (en) 1990-08-08

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EP19900400201 Withdrawn EP0381555A1 (en) 1989-01-25 1990-01-24 Opening buckets of public works machines

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EP (1) EP0381555A1 (en)
FR (1) FR2642098B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150275467A1 (en) * 2012-10-08 2015-10-01 Spadeblade Pty Ltd Excavator bucket
CN108946193A (en) * 2018-09-21 2018-12-07 窦生荣 A kind of cement feeding device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3375595A (en) * 1964-09-02 1968-04-02 Beltrami Osmano Single bucket excavator
FR2132901A1 (en) * 1971-04-13 1972-11-24 Wain Roy Cy Inc

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3375595A (en) * 1964-09-02 1968-04-02 Beltrami Osmano Single bucket excavator
FR2132901A1 (en) * 1971-04-13 1972-11-24 Wain Roy Cy Inc
US3854608A (en) * 1971-04-13 1974-12-17 Wain Co Roy Materials handling

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150275467A1 (en) * 2012-10-08 2015-10-01 Spadeblade Pty Ltd Excavator bucket
US9957688B2 (en) * 2012-10-08 2018-05-01 Spadeblade Pty Ltd Excavator bucket
CN108946193A (en) * 2018-09-21 2018-12-07 窦生荣 A kind of cement feeding device
CN108946193B (en) * 2018-09-21 2023-09-15 窦生荣 Cement loading attachment

Also Published As

Publication number Publication date
FR2642098B1 (en) 1991-04-12
FR2642098A1 (en) 1990-07-27

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