WO1985005668A1 - Levelling device - Google Patents

Levelling device Download PDF

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Publication number
WO1985005668A1
WO1985005668A1 PCT/FR1985/000130 FR8500130W WO8505668A1 WO 1985005668 A1 WO1985005668 A1 WO 1985005668A1 FR 8500130 W FR8500130 W FR 8500130W WO 8505668 A1 WO8505668 A1 WO 8505668A1
Authority
WO
WIPO (PCT)
Prior art keywords
threaded rod
support
machine
base
foot
Prior art date
Application number
PCT/FR1985/000130
Other languages
French (fr)
Inventor
Paul Louis Wattelez
Original Assignee
Usines Gabriel Wattelez S.A.
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 Usines Gabriel Wattelez S.A. filed Critical Usines Gabriel Wattelez S.A.
Publication of WO1985005668A1 publication Critical patent/WO1985005668A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M7/00—Details of attaching or adjusting engine beds, frames, or supporting-legs on foundation or base; Attaching non-moving engine parts, e.g. cylinder blocks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/3615—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with means for modifying the spring characteristic

Definitions

  • the present invention relates to a device for leveling an apparatus, a machine or the like.
  • a support base including metal whose lower face com ⁇ carries a recess intended to receive a damping block and the upper face of which comprises, approximately in its central part, a housing intended to receive and support the end of a threaded rod, as well as support and blocking members of the device or machine foot on the threaded rod.
  • the damping blocks used in these devices are generally constituted by laminated complexes of materials of hardness and of different characteristics, consisting of at least one core of hard, semi-rigid or flexible material, provided on one of its faces with a layer of less hard and deformable material, the outer surface of which has roughness or the like.
  • damping blocks offer the advantage of making it possible to dampen and immobilize the apparatus or the machine which they support properly.
  • French patent n ° 69 20 846 describes, for example, an leveling device of the type described above. above, in which the housing intended to receive and sup ⁇ carry the end of the threaded rod, is constituted by a recess of square shape directly blocking the extremity of the rod as a result of the pressure exerted.
  • this device has the drawback of not allowing any adjustment of the inclination of the threaded rod in the case of non-planar soil.
  • it does not include any member capable of ensuring its protection, at the level of the base, against oils or aqueous projections.
  • the object of the present invention is to remedy these drawbacks.
  • the housing provided on the upper face of the base is in the form of a cup, and in that the end of the coo ⁇ perant threaded rod with this cup, it has the shape of a spherical cap of corresponding radius.
  • the dimensions of the cup and of the corresponding end of the threaded rod are preferably chosen so as to allow the latter to tilt by approximately 20 ° while retaining sufficient support.
  • This characteristic makes it possible to significantly improve the adjustment possibilities, in particular in the case of factories or workshops with non-planar floors.
  • the support members and the foot of the locking device are constituted by two nuts holding to each other and ⁇ by means of washers, the bottom of the apparatus or machine .
  • This characteristic makes it possible to obtain a particularly simple installation of the machine.
  • the upper end of the threaded rod, opposite the former spherical end has a polygonal section in particular four or six-sided.
  • This characteristic makes it possible to end up with an easy operation of the threaded rod to ensure the positioning of the apparatus or of the machine, after positioning of its foot on the threaded rod.
  • the device comprises a patellar blocking member for protecting the upper face of the base as well as the spherical end of the threaded rod and the lower nut.
  • This blocking and protective member ensures, on the one hand, oscillation, cohesion and easy adaptation of the assembly on the vertical and horizontal plane, and on the other hand, its tightness vis-à-vis screw oils or aqueous projections.
  • the blocking and protective member is constituted by an elastic cap of annular shape provided, at its lower end, with a collar for retaining and protecting the lower part of the base and at its central part of a cylindrical bead with possibly a metal clamping ring, internally matching the flat shape of the lower nut to ensure its blocking and protection.
  • the elastic cap may, without departing from the scope of the invention, be provided in another material quel ⁇ conch. Particularly satisfactory results have been obtained by using a molded acrylic nitrile rubber cap.
  • shock absorbing block used may vary depending on the properties sought: self-sealing, anti-vibration, soundproofing, filtering, stabilizer ...
  • the device object of the in ⁇ vention which is intended to allow the leveling of the foot 1 of an apparatus or a machine consists of a support base 2 in particular cadmium steel whose in ⁇ férieur face has a recess 20 for receiving a damper block 3 chosen according to the desired properties.
  • This damping block is an element known in itself and will therefore not be described in detail in the remainder of this description.
  • the upper face of the base is an element known in itself and will therefore not be described in detail in the remainder of this description.
  • cup-shaped housing 4 obtained in particular by embou ⁇ weaving and intended to receive and support the spherical end of corresponding radius 50 of a threaded rod 5 intended to receive two nuts 6 and 6 'capable of holding and blocking the foot 1 of the device which it supports by means of metal washers 7 and 7'.
  • the dimensions of the cup 4 and of the spherical end 50 of the threaded rod 5 are chosen so as to allow the latter to be inclined up to about 20 ° while retaining sufficient support. This characteristic is particularly important in the case of workshops with uneven floors.
  • the upper end 51 of the * threaded rod 5 opposite the spherical lower end 50 has a section with external hexagon or internal hexagon. This configuration allows the device to be maneuvered after positioning the foot 1 on the threaded rod 5.
  • the device according to the invention is, in in addition, provided with an annular cap 8 made of molded nitrile rubber allowing the retention of the upper face of the base 2 as well as of the spherical end 50 of the threaded rod 5 and of the lower nut 6, thus as their protection against oils and aqueous splashes.
  • This cap is provided, at its lower end, with a collar 80 ensuring the protection and retention of the lower part 20 of the base 2.
  • This cap is also provided at its central part with a cylindrical housing 81 which has a flange 82 allowing it to match the shape of the lower nut 6 to ensure its protection and a tightening ring 83 blocking this nut.
  • This cap therefore ensures, at the same time, the compactness, easy adaptation and sealing of the assembly.

Abstract

The levelling device is characterized in that the housing (4) is provided on the upper face of the support base (2), configured as a dish, and in that the end (50) of the threaded rod (5) cooperating with said dish (4) is shaped as a spherical cap of a corresponding radius. The invention may be applied to the levelling of an apparatus or a machine.

Description

" Dispositif de mise à niveau " "Leveling device"
La présente invention concerne un dispositif de mise à niveau d'un appareil, d'une machine ou similaire.The present invention relates to a device for leveling an apparatus, a machine or the like.
Dans le but d'assurer l'immobilité et de per¬ mettre le réglage du niveau d'un appareil ou d'une machine, on a déjà proposé des dispositifs se composant d'une embase de support notamment en métal dont la face inférieure com¬ porte un évidement destiné à recevoir un bloc amortisseur et dont la face supérieure comporte, approximativement en sa partie centrale, un logement destiné à recevoir et à supporter l'extrémité d'une tige filetée, ainsi que des organes de support et de blocage du pied de l'appareil ou de la machine sur la tige filetée.In order to ensure immobility and per¬ set the level of an apparatus or machine, we have already proposed devices consisting of a support base including metal whose lower face com ¬ carries a recess intended to receive a damping block and the upper face of which comprises, approximately in its central part, a housing intended to receive and support the end of a threaded rod, as well as support and blocking members of the device or machine foot on the threaded rod.
Les blocs amortisseurs utilisés dans ces dis¬ positifs sont généralement constitués par des complexes feuilletés en des matériaux de dureté et de caractéristiques différentes, se composant d'au moins une âme en matière dure, semi-rigide ou souple, pourvue sur l'une de ses faces d'une couche de matériau de moindre dureté et déformable dont la surface extérieure présente des aspérités ou simi- laires.The damping blocks used in these devices are generally constituted by laminated complexes of materials of hardness and of different characteristics, consisting of at least one core of hard, semi-rigid or flexible material, provided on one of its faces with a layer of less hard and deformable material, the outer surface of which has roughness or the like.
De tels blocs amortisseurs offrent l'avantage de permettre d'amortir et d'immobiliser convenablement l'appareil ou la machine qu'ils supportent.Such damping blocks offer the advantage of making it possible to dampen and immobilize the apparatus or the machine which they support properly.
Le brevet français n° 69 20 846 décrit, par exemple, un dispositif de mise à niveau du type décrit ci- dessus, dans lequel le logement destiné à recevoir et sup¬ porter l'extrémité de la tige filetée, est constitué par un évidement de forme carrée bloquant directement l'extré¬ mité de la tige par suite de la pression exercée. Malgré ces avantages certains, ce dispositif présente l'inconvénient de ne permettre aucun réglage de l'inclinaison de la tige filetée dans le cas d'un sol non plan. De plus, il ne comporte aucun organe susceptible d'assurer sa protection, au niveau de l'embase, contre les huiles ou projections aqueuses.French patent n ° 69 20 846 describes, for example, an leveling device of the type described above. above, in which the housing intended to receive and sup¬ carry the end of the threaded rod, is constituted by a recess of square shape directly blocking the extremity of the rod as a result of the pressure exerted. Despite these certain advantages, this device has the drawback of not allowing any adjustment of the inclination of the threaded rod in the case of non-planar soil. In addition, it does not include any member capable of ensuring its protection, at the level of the base, against oils or aqueous projections.
La présente invention a pour objet de remédier à ces inconvénients.The object of the present invention is to remedy these drawbacks.
A cet effet, elle concerne un dispositif du type décrit ci-dessus, caractérisé en ce que le logement prévu sur la face supérieure de l'embase est en forme de coupelle, et en ce que l'extrémité de la tige filetée coo¬ pérant avec cette coupelle, a la forme d'une calotte sphé- rique de rayon correspondant.To this end, it relates to a device of the type described above, characterized in that the housing provided on the upper face of the base is in the form of a cup, and in that the end of the coo¬ perant threaded rod with this cup, it has the shape of a spherical cap of corresponding radius.
Selon l'invention, les dimensions de la cou- pelle et de l'extrémité correspondante de la tige filetée, sont de préférence choisies de manière à permettre une inclinaison de cette dernière d'environ 20° tout en conser¬ vant un appui suffisant.According to the invention, the dimensions of the cup and of the corresponding end of the threaded rod are preferably chosen so as to allow the latter to tilt by approximately 20 ° while retaining sufficient support.
Cette caractéristique permet d'améliorer nota- ble ent les possibilités de réglage, notamment dans le cas d'usines ou d'ateliers à sol non plan.This characteristic makes it possible to significantly improve the adjustment possibilities, in particular in the case of factories or workshops with non-planar floors.
Selon une autre caractéristique de l'invention, les organes de support et de blocage du pied de l'appareil sont constitués par deux écrous maintenant entre-eux et parΛ l'intermédiaire de rondelles, le pied de l'appareil ou de la machine.According to another characteristic of the invention, the support members and the foot of the locking device are constituted by two nuts holding to each other and Λ by means of washers, the bottom of the apparatus or machine .
Cette caractéristique permet d'obtenir une mise en place particulièrement simple de la machine.This characteristic makes it possible to obtain a particularly simple installation of the machine.
Selon une autre caractéristique de l'invention, l'extrémité supérieure de la tige filetée, opposée à l'ex- trémité sphérique a une section polygonale notamment à quatre ou à six pans.According to another characteristic of the invention, the upper end of the threaded rod, opposite the former spherical end has a polygonal section in particular four or six-sided.
Cette caractéristique permet d'aboutir à une manoeuvre facile de la tige filetée pour assurer la mise en place de l'appareil ou de la machine, après mise en place de son pied sur la tige filetée.This characteristic makes it possible to end up with an easy operation of the threaded rod to ensure the positioning of the apparatus or of the machine, after positioning of its foot on the threaded rod.
Selon une autre caractéristique de l'invention, le dispositif comporte un organe de blocage rotulien de protection de la face supérieure de l'embase ainsi que de l'extrémité sphérique de la tige filetée et de l'écrou inférieur.According to another characteristic of the invention, the device comprises a patellar blocking member for protecting the upper face of the base as well as the spherical end of the threaded rod and the lower nut.
Cet organe de blocage et de protection permet d'assurer, d'une part, l'oscillation, la cohésion et une adaptation facile de l'ensemble sur le plan vertical et horizontal, et d'autre part, son étanchéité vis-à-vis des huiles ou projections aqueuses.This blocking and protective member ensures, on the one hand, oscillation, cohesion and easy adaptation of the assembly on the vertical and horizontal plane, and on the other hand, its tightness vis-à-vis screw oils or aqueous projections.
Selon une autre caractéristique préférentielle de l'invention, l'organe de blocage et de protection est constitué par un capuchon élastique de forme annulaire muni, à son extrémité inférieure, d'une collerette de retenue et de protection de la partie inférieure de l'embase et à sa partie centrale d'un bourrelet cylindrique avec éventuelle¬ ment une bague métallique de serrage, épousant intérieurement la forme à pans de l'écrou inférieur pour assurer son blocage et sa protection.According to another preferred characteristic of the invention, the blocking and protective member is constituted by an elastic cap of annular shape provided, at its lower end, with a collar for retaining and protecting the lower part of the base and at its central part of a cylindrical bead with possibly a metal clamping ring, internally matching the flat shape of the lower nut to ensure its blocking and protection.
Le capuchon élastique peut, sans sortir du cadre de l'invention, être prévu en un autre matériau quel¬ conque. On a notamment pu obtenir des résultats particu¬ lièrement satisfaisants en utilisant un capuchon en caoutchouc nitrile acrylique moulé.The elastic cap may, without departing from the scope of the invention, be provided in another material quel¬ conch. Particularly satisfactory results have been obtained by using a molded acrylic nitrile rubber cap.
L'invention qui permet d'assurer une mise à niveau simple et bon marché d'un appareil ou d'une machine n'est, bien entendu, pas limitée par les quelques caracté¬ ristiques prévues ci-dessus ; en particulier, le bloc amor- tisseur utilisé pourra varier en fonction des propriétés recherchées : autoscellant, antivibrations, insonorisation, filtrant, stabilisant...The invention which makes it possible to ensure a simple and inexpensive upgrade of an apparatus or a machine is, of course, not limited by the few characteristics provided above; in particular, the shock absorbing block used may vary depending on the properties sought: self-sealing, anti-vibration, soundproofing, filtering, stabilizer ...
Les caractéristiques du dispositif qui fait l'objet de l'invention seront décrites plus en détail en se référant au dessin annexé qui est une vue schématique en coupe de ce dispositif.The characteristics of the device which is the subject of the invention will be described in more detail with reference to the accompanying drawing which is a schematic sectional view of this device.
Selon la figure, le dispositif objet de l'in¬ vention qui est destiné à permettre la mise à niveau du pied 1 d'un appareil ou d'une machine se compose d'une em- base support 2 notamment en acier cadmié dont la face in¬ férieure comporte un évidement 20 destiné à recevoir un bloc amortisseur 3 choisi selon les propriétés recherchées. Ce bloc amortisseur est un élément connu en lui même et ne sera donc pas décrit en détail dans la suite de cet exposé. Par ailleurs, la face supérieure de l'embaseAccording to the figure, the device object of the in¬ vention which is intended to allow the leveling of the foot 1 of an apparatus or a machine consists of a support base 2 in particular cadmium steel whose in¬ férieur face has a recess 20 for receiving a damper block 3 chosen according to the desired properties. This damping block is an element known in itself and will therefore not be described in detail in the remainder of this description. Furthermore, the upper face of the base
2 comporte, approximativement en sa partie centrale, un logement en forme de coupelle 4 obtenu notamment par embou¬ tissage et destiné à recevoir et à supporter l'extrémité sphérique de rayon correspondant 50 d'une tige filetée 5 destinée à recevoir deux écrous 6 et 6' susceptibles de maintenir et de bloquer par l'intermédiaire de rondelles métalliques 7 et 7' le pied 1 de l'appareil qu'il supporte.2 comprises, approximately in its central part, a cup-shaped housing 4 obtained in particular by embou¬ weaving and intended to receive and support the spherical end of corresponding radius 50 of a threaded rod 5 intended to receive two nuts 6 and 6 'capable of holding and blocking the foot 1 of the device which it supports by means of metal washers 7 and 7'.
Les dimensions de la coupelle 4 ainsi que de l'extrémité sphérique 50 de la tige filetée 5 sont choisies de manière à permettre une inclinaison de cette dernière jusqu'à environ 20° tout en conservant un appui suffisant. Cette caractéristique est particulièrement importante dans le cas d'ateliers à sol non plan.The dimensions of the cup 4 and of the spherical end 50 of the threaded rod 5 are chosen so as to allow the latter to be inclined up to about 20 ° while retaining sufficient support. This characteristic is particularly important in the case of workshops with uneven floors.
Par ailleurs, l'extrémité supérieure 51 de la* tige filetée 5 opposée à l'extrémité inférieure sphérique 50 comporte une section à quatre pans extérieurs ou à six pans intérieurs. Cette configuration permet la manoeuvre du dispositif après mise en place du pied 1 sur la tige filetée 5. Le dispositif conforme à l'ivention est, en outre, muni d'un capuchon annulaire 8 en caoutchouc nitrile moulé permettant d'assurer la retenue de la face supérieure de l'embase 2 ainsi que de l'extrémité sphérique 50 de la tige filetée 5 et de l'écrou inférieur 6, ainsi que leur protection vis-à-vis des huiles et des projections aqueuses.Furthermore, the upper end 51 of the * threaded rod 5 opposite the spherical lower end 50 has a section with external hexagon or internal hexagon. This configuration allows the device to be maneuvered after positioning the foot 1 on the threaded rod 5. The device according to the invention is, in in addition, provided with an annular cap 8 made of molded nitrile rubber allowing the retention of the upper face of the base 2 as well as of the spherical end 50 of the threaded rod 5 and of the lower nut 6, thus as their protection against oils and aqueous splashes.
Ce capouchon est muni, à son extrémité infé¬ rieure, d'une collerette 80 asssurant la protection et la retenue de la partie inférieure 20 de l'embase 2. Ce capu¬ chon est, en outre, muni à sa partie centrale d'un logement cylindrique 81 qui comporte un rebord 82 lui permettant d'épouser la forme de l'écrou inférieur 6 pour assurer sa protection et d'une bague de serrage 83 bloquant cet écrou.This cap is provided, at its lower end, with a collar 80 ensuring the protection and retention of the lower part 20 of the base 2. This cap is also provided at its central part with a cylindrical housing 81 which has a flange 82 allowing it to match the shape of the lower nut 6 to ensure its protection and a tightening ring 83 blocking this nut.
Ce capuchon permet donc d'assurer, à la fois, la compacité, l'adaptation facile et l'étanchéité de l'en¬ semble. This cap therefore ensures, at the same time, the compactness, easy adaptation and sealing of the assembly.

Claims

R E V E N D I C A T I O N S 1°) Dispositif de mise à niveau d'un appareil, d'une machine ou similaire se composant d'une embase de support (2) notamment en métal dont la face inférieure comporte un évidement (20) destiné à recevoir un bloc amortisseur (3) et dont la face supérieure comporte, ap¬ proximativement, en sa partie centrale un logement (4) destiné à recevoir et à supporter l'extrémité (50) d'une tige filetée (5), ainsi que des organes de support et de blocage (6, 6', 7, 7') du pied (1) de l'appareil ou de la machine sur la tige filetée, dispositif caractérisé en ce que le logement (4) prévu sur la face supérieure de l'embase (2) est en forme de coupelle et en ce que l'extré¬ mité (50) de la tige filetée (5) coopérant avec cette coupelle (4) a la forme d'une calotte sphérique de rayon correspondant.1 °) Device for leveling an appliance, a machine or the like consisting of a support base (2) in particular made of metal, the underside of which comprises a recess (20) intended to receive a damping block (3) and the upper face of which comprises, ap¬ proximately, in its central part a housing (4) intended to receive and support the end (50) of a threaded rod (5), as well as support members and blocking (6, 6 ', 7, 7') of the foot (1) of the apparatus or the machine on the threaded rod, device characterized in that the housing (4) provided on the upper face of the base (2) is cup-shaped and in that the end (50) of the threaded rod (5) cooperating with this cup (4) has the shape of a spherical cap of corresponding radius.
2°) Dispositif selon la revendication 1, carac¬ térisé en ce que les dimensions de la coupelle (4) et de l'extrémité (50) correspondante de la tige filetée (5) sont choisies de manière à permettre une inclinaison de cette dernière d'environ 20° tout en conservant un appui suffi¬ sant.2 °) Device according to claim 1, carac¬ terized in that the dimensions of the cup (4) and the end (50) of the corresponding threaded rod (5) are chosen so as to allow an inclination of the latter about 20 ° while retaining sufficient support.
3°) Dispositif selon l'une quelconque des revendications 1 et 2, caractérisé en ce que les organes de support et de blocage du pied (1) de l'appareil ou de la machine sont constitués par deux écrous (6, 6') main¬ tenant entre-eux et par l'intermédiaire de rondelles (7, 7'), le pied (1) de l'appareil ou de la machine.3 °) Device according to any one of claims 1 and 2, characterized in that the support and blocking members of the foot (1) of the device or the machine consist of two nuts (6, 6 ') main¬ holding between them and through washers (7, 7 '), the foot (1) of the device or machine.
4°) Dispositif selon l'une quelconque des "" revendications 1 à 3, caractérisé en ce que l'extrémité supérieure (51) de la tige filetée (50) opposée à l'extré¬ mité suphérique (50) a une section polygonale, notamment à quatre ou à six pans.4 °) Device according to any one of "" claims 1 to 3, characterized in that the upper end (51) of the threaded rod (50) opposite the spherical extremity (50) has a polygonal section , especially four or hexagon.
5°) Dispositif selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'il comporte un organe de blocage rotulien et de protection (8) de la face supérieure de l'embase (2) ainsi que de l 'extrémité sphérique (50) de la tige filetée (5) et de l'écrou infé¬ r eur (6) .5 °) Device according to any one of claims 1 to 4, characterized in that it comprises a patellar locking and protection member (8) of the upper face of the base (2) and of the spherical end (50) of the threaded rod (5) and of the lower nut (6) .
6°) Dispositif selon la revendication 5, caractérisé en ce que l'organe de blocage rotulien et de protection est constitué par un capuchon élastique (8), de forme annulaire, muni, à son extrémité inférieure, d'une collerette de protection (80) de la partie inférieure (20) de l'embase (2) et, à sa partie centrale, d'un bourrelet (81) cylindrique avec bague de serrage (83), épousant la forme de l'écrou inférieur (6) pour assurer son immobili¬ sation rotative et sa protection.6 °) Device according to claim 5, characterized in that the patellar locking and protection member is constituted by an elastic cap (8), of annular shape, provided, at its lower end, with a protective collar ( 80) of the lower part (20) of the base (2) and, in its central part, of a cylindrical bead (81) with clamping ring (83), conforming to the shape of the lower nut (6) to ensure its rotary immobili¬ sation and its protection.
7°) Dispositif selon l'une quelconque des revendications 5 et 6, caractérisé en ce que le capuchon élastique (8) est en caoutchouc nitrile moulé. 7 °) Device according to any one of claims 5 and 6, characterized in that the elastic cap (8) is made of molded nitrile rubber.
PCT/FR1985/000130 1984-05-28 1985-05-24 Levelling device WO1985005668A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR84/08344 1984-05-28
FR8408344A FR2565019B1 (en) 1984-05-28 1984-05-28 LEVELING DEVICE.

Publications (1)

Publication Number Publication Date
WO1985005668A1 true WO1985005668A1 (en) 1985-12-19

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FR (1) FR2565019B1 (en)
WO (1) WO1985005668A1 (en)

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FR2565019B1 (en) 1987-08-14
FR2565019A1 (en) 1985-11-29

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