[go: up one dir, main page]

EP0289685A1 - Grit spreader - Google Patents

Grit spreader Download PDF

Info

Publication number
EP0289685A1
EP0289685A1 EP87440056A EP87440056A EP0289685A1 EP 0289685 A1 EP0289685 A1 EP 0289685A1 EP 87440056 A EP87440056 A EP 87440056A EP 87440056 A EP87440056 A EP 87440056A EP 0289685 A1 EP0289685 A1 EP 0289685A1
Authority
EP
European Patent Office
Prior art keywords
roller
gravel
hopper
bucket
blade
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Withdrawn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
EP87440056A
Other languages
German (de)
French (fr)
Inventor
Marc Charansonnet
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.)
Hardy SA
Original Assignee
Hardy 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9350934&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0289685(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Hardy SA filed Critical Hardy SA
Publication of EP0289685A1 publication Critical patent/EP0289685A1/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/12—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for distributing granular or liquid materials
    • E01C19/20—Apparatus for distributing, e.g. spreading, granular or pulverulent materials, e.g. sand, gravel, salt, dry binders
    • E01C19/201—Apparatus for distributing, e.g. spreading, granular or pulverulent materials, e.g. sand, gravel, salt, dry binders with driven loosening, discharging or spreading parts, e.g. power-driven, drive derived from road-wheels
    • E01C19/202—Apparatus for distributing, e.g. spreading, granular or pulverulent materials, e.g. sand, gravel, salt, dry binders with driven loosening, discharging or spreading parts, e.g. power-driven, drive derived from road-wheels solely rotating, e.g. discharging and spreading drums
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/12—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for distributing granular or liquid materials
    • E01C19/20—Apparatus for distributing, e.g. spreading, granular or pulverulent materials, e.g. sand, gravel, salt, dry binders
    • E01C2019/2055—Details not otherwise provided for
    • E01C2019/207—Feeding the distribution means
    • E01C2019/2095—Feeding the distribution means by tipping

Definitions

  • the present invention relates to handling equipment intended to be associated with a vehicle, and more particularly relates to devices known under the name of gravel spreader, and whose function is to gradually spread on a road a load of gravel stored in a automobile tipper at the back of which it is hung.
  • a gravel spreader very widespread on the current market consists of a hopper in which gradually flows, through a window calibrated by a blade, the gravel when the bucket is tilted backwards, and which is supposed regularly distribute these gravel on the ground to be covered as the bucket moves on the road.
  • the base of the hopper is equipped with a transverse rotary cylinder reducing the passage of gravel at a slot elongated over a width of the device, defined by a set of hatches and from which said gravel is distributed, by a system of divergent blades, over the width of the treated road.
  • the invention is based on the unexpected discovery, and contrary to all the theories recognized so far, that well on the contrary, it was possible to determine a dosage of granulate deposited by varying said speed of rotation of the roller, provided that the lower edge of the blade defining the flow rate of gravel between the bucket and the hopper remains constantly in the vertical plane of symmetry of said roller.
  • the invention therefore relates to a new device for depositing, on a road, a gravel coming from a bucket inclined rearward and moving on said road, of the type comprising a hopper adapted to said bucket with interposition of a horizontal blade adjustable in height for the calibration and the quantity of gravel authorized to enter said hopper, a rotary roller partially closing the lower orifice of said hopper above a divergent distributor, characterized in that the displacements of said blade are defined in such a way that its lower edge remains constantly in the vertical plane of symmetry of said roller, the dosage of the gravel deposit then being a function of the speed of rotation of the roller.
  • the apparatus referred to in the present invention is a hopper 1, attached to the rear of a bucket (not shown), the open rear wall of which inclines against the front partition 3 of the hopper.
  • a lock 4 directs the gravel contained in the bucket towards the inlet 5 of the hopper.
  • a transverse cylinder 10 is interposed in the outlet 11 of the hopper, and directs the aggregates towards a plate 12 carrying divergent deflectors 13, ensuring the distribution of the gravel on the ground 14.
  • This roller 10 is driven in rotation about an axis 16, in the direction of arrow F, in proportion to the speed of movement of the vehicle mechanically by wheels or hydraulically by a pump fitted to the carrier vehicle.
  • curve A shows that the dosage of gravel deposited remains constant at around 8 l / m when the speed of rotation of the roller increases from 40 to 100 t / min.
  • Curve C shows that this dosage increases approximately from 5.5 to 11 l / m when the angle of inclination of the bucket increases from 30 to 40 °, with an optimal average value of approximately 8 l / m for an inclination 34 °.
  • Figure 2 shows all the elements of Figure 1, but has a relative arrangement of the roller 10 'and the blade 7'. According to this arrangement, the arrangement of said blade 7 ′ and its axis 8 are such that the lower edge 15 of the blade remains constantly in the vertical plane XX ′ of symmetry of the roller 1o ′.
  • Curve B shows that the dosage of the aggregate can be varied between 5 and 9 l / m by varying the speed of rotation of the roller between 15 and 90 rpm.
  • Curve D shows that this dosage remains constant for all the inclinations of the bucket between 3o and 40 °.
  • the path of the edge 15 can deviate slightly from the plane XX ′, as soon as this difference does not exceed approximately 10 ° on each side of the vertical plane, which corresponds to the differences in inclination of the bucket of each side of the optimal value of 34 °.
  • a fiber brush 20 can be provided for cleaning its surface at each turn.
  • roller 10 ′ with a rubber coating.
  • the effect of such a coating is to further improve the performance of this apparatus, by ensuring better attachment of the gravel without slipping on the surface of the roller.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)

Abstract

Apparatus for depositing grit on a road, the grit coming from a tipper inclined rearwards and moving rearwards, of the type comprising a hopper (1) fitted to the said tipper with the interposition of a height-adjustable horizontal blade (7') for gauging the amount of grit permitted to penetrate into the said hopper (1), a revolving roller (10) partially closing off the lower orifice of the said hopper (1) above a divergent distributor (13), in which the displacements of the said blade (7') are defined such that its lower edge remains constantly in the vertical plane of symmetry of the said roller (10), metering of the deposition of the grit then being a function of the rotational speed of the roller (10). <IMAGE>

Description

La présente invention concerne les matériels de manutention destinés à être associés à un véhicule, et vise plus particulièrement les appareils connus sous le nom d'épandeur de gravillons, et dont la fonction est de répandre progressivement sur une route une charge de gravillons stockée dans une benne automobile à l'arrière de laquelle il est accroché.The present invention relates to handling equipment intended to be associated with a vehicle, and more particularly relates to devices known under the name of gravel spreader, and whose function is to gradually spread on a road a load of gravel stored in a automobile tipper at the back of which it is hung.

Un épandeur de gravillons très répandu sur le marché actuel se compose d'une trémie dans laquelle s'écoule progressivement, au travers d'une fenêtre calibrée par une lame, les gravillons quand la benne est inclinée vers l'arrière, et qui est supposée répartir régulièrement ces gravillons sur le sol à couvrir à mesure que la benne se déplace sur la route.A gravel spreader very widespread on the current market consists of a hopper in which gradually flows, through a window calibrated by a blade, the gravel when the bucket is tilted backwards, and which is supposed regularly distribute these gravel on the ground to be covered as the bucket moves on the road.

A cet effet, la base de la trémie est équipée d'un cylindre rotatif transversal réduisant le passage des gravillons à une fente allongée sur une largeur de l'appareil, définie par un jeu de trappes et depuis laquelle lesdits gravillons sont répartis, par un système de lames divergentes, sur la largeur de route traitée.For this purpose, the base of the hopper is equipped with a transverse rotary cylinder reducing the passage of gravel at a slot elongated over a width of the device, defined by a set of hatches and from which said gravel is distributed, by a system of divergent blades, over the width of the treated road.

Or il est reconnu que, la largeur transversale de passage des gravillons étant fixée par les trappes précitées, la quantité de ces gravillons effectivement déposée n'est fonction que de la hauteur du talus se formant le long du cylindre, et demeure indépendante de la vitesse de rotation dudit cylindre, c'est-à-dire, en termes plus nets, qu'il n'existe pas de moyen de réglage positif de la quantité de gravillons déposée. On en est donc réduit dans la pratique à déposer beaucoup plus de gravillons qu'il n'est nécessaire, et soit à admettre qu'une proportion importante de ces gravillons est gâchée et perdue, soit à s'astreindre à tenter de récupérer l'excès dans les caniveaux par des moyens coûteux.However, it is recognized that, the transverse width of passage of the gravel being fixed by the aforementioned hatches, the quantity of these gravel actually deposited depends only on the height of the slope forming along the cylinder, and remains independent of the speed of rotation of said cylinder, that is to say, in clearer terms, that there is no means of positive adjustment of the quantity of gravel deposited. We are therefore reduced in practice to depositing much more gravel than is necessary, and either to admit that a significant proportion of these gravel is wasted and lost, or to be forced to try to recover the excess in the gutters by expensive means.

Cette absence de moyens de dosage a donné lieu à de nombreuses études concluant toutes au fait que "la vitesse de rotation du rouleau ne peut intervenir comme paramètre" et que "le seul paramètre disponible sur le dosage en un granulat donné par mètre carré est la vitesse de déplacement du véhicule porteur" (Bulletin liaison labo D.136, mars-avril 1985).This lack of metering means has given rise to numerous studies, all concluding that "the speed of rotation of the roller cannot intervene as a parameter" and that "the only available parameter on the metering of a given aggregate per square meter is the speed of movement of the carrier vehicle "(Laboratory link bulletin D.136, March-April 1985).

L'invention repose sur la découverte inattendue, et contraire à toutes les théories reconnues jusqu'ici, que bien au contraire, il était possible de déterminer un dosage de granulat déposé en faisant varier ladite vitesse de rotation du rouleau, à la condition que l'arête inférieure de la lame définissant le débit d'écoulement des gravillons entre la benne et la trémie demeure constamment dans le plan vertical de symétrie dudit rouleau.The invention is based on the unexpected discovery, and contrary to all the theories recognized so far, that well on the contrary, it was possible to determine a dosage of granulate deposited by varying said speed of rotation of the roller, provided that the lower edge of the blade defining the flow rate of gravel between the bucket and the hopper remains constantly in the vertical plane of symmetry of said roller.

L'invention vise donc un nouvel appareillage pour le dépôt, sur une route, d'un gravillon provenant d'une benne inclinée vers l'arrière et se déplaçant sur ladite route, du type comportant une trémie adaptée à ladite benne avec interposition d'une lame horizontale réglable en hauteur pour le calibrage e la quantité de gravillon autorisée à pénétrer dans ladite trémie, un rouleau rotatif obturant partiellement l'orifice inférieur de ladite trémie au-dessus d'un répartiteur divergent, caractérisé en ce que les déplacements de ladite lame sont définis de telle manière que son arête inférieure demeure constamment dans le plane vertical de symétrie dudit rouleau, le dosage du dépôt du gravillon étant alors fonction de la vitesse de rotation du rouleau.The invention therefore relates to a new device for depositing, on a road, a gravel coming from a bucket inclined rearward and moving on said road, of the type comprising a hopper adapted to said bucket with interposition of a horizontal blade adjustable in height for the calibration and the quantity of gravel authorized to enter said hopper, a rotary roller partially closing the lower orifice of said hopper above a divergent distributor, characterized in that the displacements of said blade are defined in such a way that its lower edge remains constantly in the vertical plane of symmetry of said roller, the dosage of the gravel deposit then being a function of the speed of rotation of the roller.

On va maintenant décrire l'invention plus en détail en se référant au dessin annexé sur lequel :

  • La figure 1 est une coupe transversale par un plan vertical d'un appareillage de gravillonnage de type classique.
  • La figure 2 est une vue semblable à l figure 1, d'un appareillage du même type, mais comportant l'aménagement selon l'invention.
  • La figure 3 est un jeu de courbes montrant à titre comparatif la variation du dosage de granulat déposé en fonction de la vitesse de rotation du rouleau dans les appareillages des figures 1 et 2 respectivement,
  • et la figure 4 est un jeu de courbes semblables à celles de la figure 3, le paramètre variable étant l'inclinaison de la benne.
The invention will now be described in more detail with reference to the attached drawing in which:
  • Figure 1 is a cross section through a vertical plane of a gravel apparatus of conventional type.
  • Figure 2 is a view similar to Figure 1, of a apparatus of the same type, but comprising the arrangement according to the invention.
  • FIG. 3 is a set of curves showing for comparison the variation of the dosage of granulate deposited as a function of the speed of rotation of the roller in the apparatuses of FIGS. 1 and 2 respectively,
  • and FIG. 4 is a set of curves similar to those of FIG. 3, the variable parameter being the inclination of the bucket.

L'appareillage visé dans la présente invention est une trémie 1, accrochée à l'arrière d'une benne (non représentée), dont la paroi arrière ouverte vient s'incliner contre la cloison avant 3 de la trémie. De manière générale, connue, une écluse 4 dirige les gravillons contenus dans la benne vers l'entrée 5 de la trémie. Des panneaux ou trappes 6, manoeuvrés en translation par des leviers 6′, permettent de délimiter l'envergure transversale de l'entrée 5. Une lame horizontale 7, montée rotative autour d'un axe fixe 8 et manoeuvrée par un levier 9, entre la position ouverte (représentée) et la position fermée (en trait interrompu), détermine la quantité de gravillon admis dans la trémie. Un cylindre transversal 10 est interposé dans la sortie 11 de la trémie, et dirige les granulats vers un plateau 12 portant des déflecteurs divergents 13, assurant la répartition des gravillons sur le sol 14.The apparatus referred to in the present invention is a hopper 1, attached to the rear of a bucket (not shown), the open rear wall of which inclines against the front partition 3 of the hopper. Generally known, a lock 4 directs the gravel contained in the bucket towards the inlet 5 of the hopper. Panels or hatches 6, maneuvered in translation by levers 6 ′, make it possible to delimit the transverse span of the entrance 5. A horizontal blade 7, rotatably mounted around a fixed axis 8 and maneuvered by a lever 9, between the open position (shown) and the closed position (broken line), determines the quantity of gravel admitted into the hopper. A transverse cylinder 10 is interposed in the outlet 11 of the hopper, and directs the aggregates towards a plate 12 carrying divergent deflectors 13, ensuring the distribution of the gravel on the ground 14.

Ce rouleau 10 est entraîné en rotation autour d'un axe 16, dans le sens de la flèche F, proportionellement à la vitesse de déplacement du véhicule mécaniquement par roues ou hydrauliquement par une pompe équipant le véhicule porteur.This roller 10 is driven in rotation about an axis 16, in the direction of arrow F, in proportion to the speed of movement of the vehicle mechanically by wheels or hydraulically by a pump fitted to the carrier vehicle.

Il a été constaté et admis que, l'angle d'inclinaison de la benne vers l'arrière et l'ouverture définie par l'arête inférieure 15 étant fixés, la quantité de gravillon disposée est totalement indépendante de la vitesse de rotation du rouleau 10, qui n'a donc pour seul rôle que de convoyer le talus de gravillon qui se forme constamment sur lui vers la sortie 11. Bien entendu, l'angle d'inclinaison de la benne intervient dans ce dosage, mais pour d'autres considérations, on cherche au contraire à le conserver à une valeur optimale de 34°, et non à l'utiliser comme paramètre de dosage.It has been observed and accepted that, the angle of inclination of the bucket towards the rear and the opening defined by the lower edge 15 being fixed, the quantity of gravel disposed is completely independent of the speed of rotation of the roller. 10, which therefore only has the role of conveying the gravel slope which constantly forms on it towards the exit 11. Of course, the angle of inclination of the grab intervenes in this dosage, but for others On the contrary, we try to keep it at an optimal value of 34 °, and not to use it as a dosage parameter.

C'est ce qui apparait sur les courbes A et C des figures 3 et 4 : la courbe A montre que le dosage de gravillon déposé demeure constant à environ 8 l/m quand la vitesse de rotation du rouleau augmente de 40 à 100 t/mn. La courbe C montre que ce dosage augmente environ de 5,5 à 11 l/m quand l'angle d'inclinaison de la benne augmente de 30 à 40°, avec une valeur moyenne optimale d'environ 8 l/m pour une inclinaison de 34°.This is what appears on curves A and C of Figures 3 and 4: curve A shows that the dosage of gravel deposited remains constant at around 8 l / m when the speed of rotation of the roller increases from 40 to 100 t / min. Curve C shows that this dosage increases approximately from 5.5 to 11 l / m when the angle of inclination of the bucket increases from 30 to 40 °, with an optimal average value of approximately 8 l / m for an inclination 34 °.

La figure 2 reprend tous les éléments de la figure 1, mais comporte un aménagement relatif du rouleau 10′ et de la lame 7′. Selon cet aménagement, la disposition de ladite lame 7′ et de son axe 8 sont tels que l'arête inférieure 15 de la lame demeure constamment dans le plan vertical XX′ de symétrie du rouleau 1o′.Figure 2 shows all the elements of Figure 1, but has a relative arrangement of the roller 10 'and the blade 7'. According to this arrangement, the arrangement of said blade 7 ′ and its axis 8 are such that the lower edge 15 of the blade remains constantly in the vertical plane XX ′ of symmetry of the roller 1o ′.

On a constaté que, dans ces conditions, et contrairement à ce qui se passe dans toute autre disposition, la quantité de gravillon déposée varie avec la vitesse de rotation du rouleau 10′, et qu'il devient alors possible de doser avec précision le dépôt de gravillon en fonction des impératifs locaux. On a constaté également que, dans ces conditions également, ce dosage devient indépendant de l'angle d'inclinaison de la benne.It has been found that, under these conditions, and contrary to what happens in any other arrangement, the quantity of gravel deposited varies with the speed of rotation of the roller 10 ′, and that it then becomes possible to precisely dose the deposit of gravel according to local requirements. It has also been found that, also under these conditions, this dosage becomes independent of the angle of inclination of the bucket.

C'est ce qui apparaît sur les courbes B et D des figures 3 et 4 :This is what appears on curves B and D of Figures 3 and 4:

La courbe B montre que l'on peut faire varier le dosage du granulat entre 5 et 9 l/m en faisant varier la vitesse de rotation du rouleau entre 15 et 90 t/min. La courbe D montre que ce dosage demeure constant pour toutes les inclinaisons de la benne entre 3o et 40°.Curve B shows that the dosage of the aggregate can be varied between 5 and 9 l / m by varying the speed of rotation of the roller between 15 and 90 rpm. Curve D shows that this dosage remains constant for all the inclinations of the bucket between 3o and 40 °.

Bien entendu, le trajet de l'arête 15 peut s'écarter légèrement du plan XX′, dès lors que cet écart ne dépasse pas environ 10° de chaque côté du plan vertical, ce qui correspond aux écarts d'inclinaison de la benne de chaque côté de la valeur optimale de 34°.Of course, the path of the edge 15 can deviate slightly from the plane XX ′, as soon as this difference does not exceed approximately 10 ° on each side of the vertical plane, which corresponds to the differences in inclination of the bucket of each side of the optimal value of 34 °.

Pour assurer un fonctionnement encore plus régulier de cet appareil, il peut être prévu un balai en fibres 20 pour le nettoyage de sa surface à chaque tour.To ensure even more regular operation of this device, a fiber brush 20 can be provided for cleaning its surface at each turn.

Enfin, selon l'invention, il est prévu de munir le rouleau 10′ d'un revêtement de caoutchouc. Un tel revêtement a pour effet d'améliorer encore les performances de cet appareillage, en assurant un meilleur accrochage du gravillon sans glissement sur la surface du rouleau.Finally, according to the invention, provision is made to provide the roller 10 ′ with a rubber coating. The effect of such a coating is to further improve the performance of this apparatus, by ensuring better attachment of the gravel without slipping on the surface of the roller.

Claims (3)

1. Appareillage pour le dépôt, sur une route, d'un gravillon provenant d'une benne inclinée vers l'arrière et se déplaçant vers l'arrière du type comportant une trémie adaptée à ladite benne avec interposition d'une lame horizontale réglable en hauteur pour le calibrage de la quantité de gravillon autorisée à pénétrer dans ladite trémie, un rouleau rotatif obturant partiellement l'orifice inférieur de ladite trémie au-dessus d'un répartiteur divergent, caractérisé en ce que les déplacements de ladite lame sont définis de telle manière que son arête inférieure demeure constamment dans le plan vertical de symétrie dudit rouleau, le dosage du dépôt du gravillon étant alors fonction de la vitesse de rotation du rouleau.1. Apparatus for depositing, on a road, a gravel coming from a bucket inclined towards the rear and moving towards the rear of the type comprising a hopper adapted to said bucket with interposition of a horizontal blade adjustable in height for calibrating the quantity of gravel authorized to enter said hopper, a rotary roller partially closing the lower orifice of said hopper above a divergent distributor, characterized in that the displacements of said blade are defined in such a way so that its lower edge remains constantly in the vertical plane of symmetry of said roller, the dosage of the gravel deposit then being a function of the speed of rotation of the roller. 2. Appareillage selon la revendication 1, caractérisé en ce que, l'inclinaison de la benne pouvant s'écarter d'environ 10° de chaque côté d'une valeur optimale de 34°, le plan dans lequel doit demeurer l'arête inférieure de la lame peut lui-même s'écarter au maximum d'environ 10° par rapport au plan vertical.2. Apparatus according to claim 1, characterized in that, the inclination of the bucket being able to deviate from about 10 ° on each side by an optimal value of 34 °, the plane in which the lower edge must remain of the blade can itself deviate by a maximum of approximately 10 ° from the vertical plane. 3. Appareillage selon les revendications 1 et 2, caractérisé en ce que la surface du rouleau est revêtue de caoutchouc.3. Apparatus according to claims 1 and 2, characterized in that the surface of the roller is coated with rubber.
EP87440056A 1987-05-06 1987-09-17 Grit spreader Withdrawn EP0289685A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8706537A FR2614909B1 (en) 1987-05-06 1987-05-06 IMPROVEMENT WITH GRAVILLON SPREADERS
FR8706537 1987-05-06

Publications (1)

Publication Number Publication Date
EP0289685A1 true EP0289685A1 (en) 1988-11-09

Family

ID=9350934

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87440056A Withdrawn EP0289685A1 (en) 1987-05-06 1987-09-17 Grit spreader

Country Status (2)

Country Link
EP (1) EP0289685A1 (en)
FR (1) FR2614909B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2647131A1 (en) * 1989-05-22 1990-11-23 Secmair Gravel spreading (gritting) device
FR2829513A1 (en) * 2001-09-12 2003-03-14 Famaro DEVICE FOR SPREADING GRAVILLONS AT THE BACK OF A TIPPER OF A TRUCK
US7045167B2 (en) 1999-12-03 2006-05-16 J&K Development Llc Solid particulate material application device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1200883A (en) * 1958-05-31 1959-12-24 Hardy & Cie Spreading device for powdery and granular materials
FR2528085A1 (en) * 1982-06-07 1983-12-09 Etude Const Mat Agric Indl Rou Device for spreading gravel etc. - attaches to rear of tipping lorry and distributes gravel evenly across road

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1200883A (en) * 1958-05-31 1959-12-24 Hardy & Cie Spreading device for powdery and granular materials
FR2528085A1 (en) * 1982-06-07 1983-12-09 Etude Const Mat Agric Indl Rou Device for spreading gravel etc. - attaches to rear of tipping lorry and distributes gravel evenly across road

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2647131A1 (en) * 1989-05-22 1990-11-23 Secmair Gravel spreading (gritting) device
US7045167B2 (en) 1999-12-03 2006-05-16 J&K Development Llc Solid particulate material application device
FR2829513A1 (en) * 2001-09-12 2003-03-14 Famaro DEVICE FOR SPREADING GRAVILLONS AT THE BACK OF A TIPPER OF A TRUCK
EP1293608A1 (en) * 2001-09-12 2003-03-19 Famaro Gravel spreading device to be mounted at the back of the tipping bucket of a truck

Also Published As

Publication number Publication date
FR2614909B1 (en) 1989-08-18
FR2614909A1 (en) 1988-11-10

Similar Documents

Publication Publication Date Title
FR2569939A1 (en) DISPENSER OF SUBSTANCES FOR SPREADING
FR2528085A1 (en) Device for spreading gravel etc. - attaches to rear of tipping lorry and distributes gravel evenly across road
FR2539334A1 (en) DEVICE FOR APPLYING COATING ON MOVING STRIPS
EP2454928A1 (en) Spreader device with chute suitable for taking into account the flow effect
EP0289685A1 (en) Grit spreader
FR2641716A1 (en) INVERTED POSITION RACLE DOSING UNIT AND METHOD FOR APPLYING COATING TO CONTINUOUS BAND MATERIAL USING A RACLE
FR2647131A1 (en) Gravel spreading (gritting) device
FR2509338A1 (en) METHOD FOR DETERMINING THE APPLICATION OF A BINDER ON A PAVEMENT AND DEVICE FOR SPREADING
EP1955579B1 (en) Machine and method for centrifugal spreading of manure or similar products in grain form.
FR2691040A1 (en) Flow regulator for seeds dispensed from seeder - has grooved wheel, fitted after seed distributor to align and regulate flow of seeds
FR2671567A1 (en) Machine for simultaneously spreading at least one solid material and a binder
FR2488341A1 (en) DEVICE FOR LIFTING A FLUID, ESPECIALLY WATER
FR2671180A1 (en) Mobile installation for automatically taking samples of soil
FR2728592A1 (en) Aggregate spreading table for grit spreader situated at back of skip lorry
FR2658765A1 (en) Device for lateral tipping of material contained in a skip
FR2661929A1 (en) Device for manufacturing an intermediate layer in a road covering on the ground
FR2657098A1 (en) MACHINE FOR APPLYING A MATERIAL FOR COATING A PAVEMENT.
FR2633647A1 (en) Finisher for fitting very thin layers
EP0509877B1 (en) Device for resurfacing a road by successive spreading of an adhesive layer and a hot asphalt layer on the road surface
FR2829513A1 (en) DEVICE FOR SPREADING GRAVILLONS AT THE BACK OF A TIPPER OF A TRUCK
EP0794011B1 (en) Device and process for applying a liquid resin on a moving web
FR2572433A1 (en) Spreading device for granular and/or pulverulent materials
FR2869332A1 (en) Road surface repairing machine, is composed of vehicle having complete bitumen spreading system and gravels depositing system with three diffusers, where binders and gravels are spread at same time and rolled immediately afterwards
EP0383774A1 (en) Skid simulator for motor vehicles
EP1403435A1 (en) Method for improving the quality of roadway surfaces and device for carrying out the method

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE ES GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19890426

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19900403

RIN1 Information on inventor provided before grant (corrected)

Inventor name: CHARANSONNET, MARC