EP1416117A1 - Adjustable ladder - Google Patents

Adjustable ladder Download PDF

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Publication number
EP1416117A1
EP1416117A1 EP03370036A EP03370036A EP1416117A1 EP 1416117 A1 EP1416117 A1 EP 1416117A1 EP 03370036 A EP03370036 A EP 03370036A EP 03370036 A EP03370036 A EP 03370036A EP 1416117 A1 EP1416117 A1 EP 1416117A1
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EP
European Patent Office
Prior art keywords
support
counter
uprights
ladder
branch
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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.)
Granted
Application number
EP03370036A
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German (de)
French (fr)
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EP1416117B1 (en
Inventor
André Fournier
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Fournier Sarl Ets
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Fournier Sarl Ets
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Publication of EP1416117A1 publication Critical patent/EP1416117A1/en
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    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C1/00—Ladders in general
    • E06C1/02—Ladders in general with rigid longitudinal member or members
    • E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
    • E06C1/382—Tripod ladders
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C1/00—Ladders in general
    • E06C1/02—Ladders in general with rigid longitudinal member or members
    • E06C1/14—Ladders capable of standing by themselves
    • E06C1/16—Ladders capable of standing by themselves with hinged struts which rest on the ground
    • E06C1/20—Ladders capable of standing by themselves with hinged struts which rest on the ground with supporting struts formed as poles
    • E06C1/22—Ladders capable of standing by themselves with hinged struts which rest on the ground with supporting struts formed as poles with extensible, e.g. telescopic, ladder parts or struts

Definitions

  • the invention relates to an adjustable scale.
  • a ladder consists of two uprights connected by bars or sleepers.
  • the user of the ladder does not have a support point and he must therefore use another type of scale namely double scales.
  • This double scale includes a second scale articulated on the part upper uprights.
  • This second scale is often presented in a simplified form consisting of two uprights connected, in particular, to the base by a single crosspiece.
  • a flexible link allows limit the opening.
  • the invention relates to a ladder comprising two uprights connected by crosspieces and an articulated counter-support on the uprights, this ladder being characterized in that the counter-support is of variable length.
  • a ladder 1 is made up of two uprights 2 connected by sleepers 3 or rungs 3 and a counter-support 4 articulated on the uprights 2.
  • the sleepers constitute steps.
  • the counter-support 4 is consisting of a profile held at its upper end between the two amounts 2 above.
  • This scale includes a means for limiting the spacing of the counter-support compared to the amounts.
  • it is one or two straps.
  • the ladder comprises at a distance from its top Has a so-called locking device 5 which, in the active position, extends in a plane P parallel to the support plane R of the ladder and locks the geometric arrangement uprights 2 and counter support 4.
  • This device 5 is articulated on the uprights 2 and guided in translation on the counter support 4.
  • the locking device 5 is not shown in figure 1.
  • the articulation of the counter-support is on the top of the uprights.
  • the counter-support carries, on its face facing the uprights, a fitting 6 slightly away from the face of the counter-support behind which the fitting slides the end of a triangular piece 5A whose base is articulated on the rear of the amounts.
  • This triangular part 5A is, for example, formed from a folded round wire so that it forms a kind of Vé whose free ends 5C are engaged in 5D fittings carried by the uprights 2 to form a joint.
  • This triangular part 5A has in its part opposite the articulation aforementioned a passer-by 20 which slides along the fitting 6 carried by the counter-support 4.
  • the passer-by 20 can be delimited by the round wire and an engaging tablet 5B inside the Vee of the triangular part 5A.
  • Transverse stiffeners 21 connect the branches of the Vé for better rigidity.
  • the point 22 of the Vé is inclined relative to the plane containing the branches and down so that the passer-by 20 slides with a slight play of operation around the fitting 6 of the counter-support.
  • This fitting 6 of the counter-support has at least one notch 23 for lock the triangular part 5A in translation in a horizontal position.
  • a second notch is provided for locking in the folded position.
  • This locking device makes it possible to give a geometric resistance to the tripod thus opened.
  • the front face of the uprights is connected by a plate 24 stiffening the assembly at the head and maintaining the axis of rotation which is invisible.
  • the ladder cannot tip over.
  • the angle R defined between the plane defined by the uprights and the counter-support is around 40 °.
  • the angle V formed by the two uprights is of the order of 22 °.
  • the length of the counter-support and the angles are determined so that the center gravity is closer to the abutment so that the weight of the user is oriented towards profile 4.
  • the angle G between the ground and the plane containing the uprights is less than the angle F between the ground and the abutment.
  • This angle G is approximately 65 ° and the angle F is 75 °.
  • a pad 7 or shoe is provided at the base of the counter-support. of support of far greater extent than the section of the profile 4 so as to ability to place this abutment on loose soil.
  • this profile is either cut into the mass, consisting of two pieces of wood assembled.
  • the first sleepers from the bottom are connected by a load take-up bar 8 in particular avoiding a risk of bending the longest ties.
  • the face of this bar 8 facing the abutment will have a groove to partially accommodate the abutment.
  • the rear of this bar 8 may be provided with a means for hooking the profiled like a loop and hook system, which can be partially housed in the aforementioned groove.
  • the counter-support 4 is of variable length so that can maintain the horizontality of the steps even if the ground is sloping in one direction or in the other.
  • the counter-support 4 is formed of at least one telescopic element with locking means 41, either step by step or in any point.
  • the counter-support 4 may consist of two nested tubes but a more resistant solution and allowing to implement full profiles is described below.
  • the counter-support 4 comprises, on the one hand, a main branch 4A which, extending from the top of the ladder, is of length lower than the uprights and, on the other hand, a secondary 4B branch made up of two sections kept apart by 4D lugs, this branch secondary coming to cap the main branch.
  • Holes 50 in the two branches coincide allowing them to introduce a pin 51 and thus lock the translation of the branches.
  • the counter-support 4 comprises, on the one hand, a main branch 4A which, extending from the top of the ladder, is of length lower than the uprights and, on the other hand, a secondary 4B branch constituted by a profile having a longitudinal groove 4E which houses the main branch, one or more 4F legs closing the entrance of the groove to keep the second branch on the first.
  • a first branch 4A will be used having a cross section Tee so that the 4G inner faces of the horizontal branch of the Tee participate guidance.
  • the lengths of the branches will be determined so that the length of the counter-support can be less than the length of the uprights or be greater.
  • the variation range may be of the order of a meter or more.

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  • Ladders (AREA)
  • Valve Device For Special Equipments (AREA)
  • Soil Working Implements (AREA)

Abstract

The adjustable step ladder has two uprights (2) connected by rungs (3). A counter strut (4) is hinged to the uprights and is adjustable in length. The counter strut has a locking brace (5) adjacent to its top to retain the uprights and counter strut in their relative positions. The counter strut can be telescopic.

Description

L'invention se rapporte à une échelle réglable.The invention relates to an adjustable scale.

Classiquement, une échelle se compose de deux montants reliés par des barreaux ou traverses.Conventionally, a ladder consists of two uprights connected by bars or sleepers.

Souvent les montants sont parallèles mais parfois les montants sont convergents vers le sommet de l'échelle.Often the amounts are parallel but sometimes the amounts are converge to the top of the scale.

Tel est le cas des échelles utilisées par les laveurs de vitres qui bien souvent doivent appuyer leur échelle sur les montants des baies vitrées, lesquels montants sont étroits.This is the case with the ladders used by window cleaners who very often must rest their ladder on the uprights of the bay windows, which uprights are narrow.

En effet, il n'est pas question de s'appuyer sur la vitre car celle-ci est considérée comme trop fragile.Indeed, there is no question of leaning on the glass because it is considered too fragile.

Ces échelles nécessitent donc de disposer d'un point d'appui pour le sommet de celle-ci.These scales therefore require a support point for the summit of it.

Dans certain cas, l'utilisateur de l'échelle ne dispose pas d'un point d'appui et il doit donc utiliser un autre type d'échelle à savoir des échelles doubles.In some cases, the user of the ladder does not have a support point and he must therefore use another type of scale namely double scales.

Cette échelle double comprend une deuxième échelle articulée sur la partie supérieure des montants.This double scale includes a second scale articulated on the part upper uprights.

Cette deuxième échelle se présente souvent sous une forme simplifiée constituée de deux montants reliés, notamment, à la base par une seule traverse.This second scale is often presented in a simplified form consisting of two uprights connected, in particular, to the base by a single crosspiece.

Ce support ou contre-appui et l'échelle, lorsqu'ils sont en position d'utilisation, forment en vue de côté un triangle. This support or counter-support and the ladder, when in the position of use, form in side view a triangle.

Pour éviter que le triangle s'ouvre, généralement, un lien souple permet de limiter l'ouverture.To prevent the triangle from opening, generally, a flexible link allows limit the opening.

Ces échelles, à quatre points d'appui au sol, doivent être utilisées sur des terrains plats.These ladders, with four support points on the ground, must be used on flat land.

En effet, en terrain meuble, le risque de tomber est important.Indeed, in soft ground, the risk of falling is important.

Parfois, à la base de ces échelles, on y ajoute un stabilisateur mais dont l'efficacité est limitée.Sometimes, at the base of these scales, we add a stabilizer but whose effectiveness is limited.

On connaít également des échelles dont le contre-appui est constitué par un simple profilé en sorte que l'on forme un appui en trois points ce qui est favorable à la stabilité.We also know scales whose counter-support is constituted by a simple profile so that we form a support at three points which is favorable to stability.

Si ces échelles fonctionnent parfaitement bien sur un sol plan, lorsque celui ci est incliné, le centre de gravité se trouve alors déplacé et le risque de chute devient alors non négligeable.If these scales work perfectly well on level ground, when this one is tilted, the center of gravity is then moved and the risk of falling becomes so not negligible.

Un des résultats que vise l'invention est une échelle du type précité qui apporte une solution aux problèmes évoqués ci-avant.One of the results targeted by the invention is a scale of the aforementioned type which provides a solution to the problems mentioned above.

A cet effet, l'invention a pour objet une échelle comprenant deux montants reliés par des traverses et un contre-appui articulé sur les montants, cette échelle étant caractérisée en ce que le contre-appui est de longueur variable.To this end, the invention relates to a ladder comprising two uprights connected by crosspieces and an articulated counter-support on the uprights, this ladder being characterized in that the counter-support is of variable length.

L'invention sera bien comprise à l'aide de la description ci-après faite à titre d'exemple non limitatif en regard du dessin ci-annexé qui représente schématiquement :

  • figure 1 : une vue de face de l'échelle,
  • figure 2 : une vue de côté de l'échelle,
  • figure 3 : un détail de l'échelle vue de dessus
  • figure 4 : une vue partielle de côté de la figure 3,
  • figure 5 : une échelle sur un sol pentu,
  • figures 6 à 8 : trois variantes de l'invention.
The invention will be clearly understood with the aid of the description below given by way of nonlimiting example with regard to the appended drawing which schematically represents:
  • Figure 1: a front view of the ladder,
  • Figure 2: a side view of the ladder,
  • figure 3: a detail of the scale seen from above
  • FIG. 4: a partial side view of FIG. 3,
  • Figure 5: a ladder on sloping ground,
  • Figures 6 to 8: three variants of the invention.

En se reportant au dessin, on voit une échelle 1.Referring to the drawing, we see a scale 1.

Classiquement, une échelle 1 est constituée de deux montants 2 reliés par des traverses 3 ou échelons 3 et un contre-appui 4 articulé sur les montants 2.Conventionally, a ladder 1 is made up of two uprights 2 connected by sleepers 3 or rungs 3 and a counter-support 4 articulated on the uprights 2.

Les traverses constituent des marches. The sleepers constitute steps.

Comme on peut le voir dans l'exemple représenté le contre-appui 4 est constitué par un profilé maintenu à son extrémité supérieure entre les deux montants 2 précités .As can be seen in the example shown, the counter-support 4 is consisting of a profile held at its upper end between the two amounts 2 above.

Cette échelle comprend un moyen en vue de limiter l'écartement du contre-appui par rapport aux montants.This scale includes a means for limiting the spacing of the counter-support compared to the amounts.

Dans une forme de réalisation, il s'agit d'une ou deux sangles.In one embodiment, it is one or two straps.

Selon une autre forme de réalisation, l'échelle comprend à distance de son sommet A un dispositif 5 dit de verrouillage qui, en position active, s'étend dans un plan P parallèle au plan d'appui R de l'échelle et verrouille la disposition géométrique des montants 2 et du contre-appui 4.According to another embodiment, the ladder comprises at a distance from its top Has a so-called locking device 5 which, in the active position, extends in a plane P parallel to the support plane R of the ladder and locks the geometric arrangement uprights 2 and counter support 4.

Ce dispositif 5 est articulé sur les montants 2 et guidé en translation sur le contre-appui 4.This device 5 is articulated on the uprights 2 and guided in translation on the counter support 4.

Pour simplifier la lecture, le dispositif de verrouillage 5 n'est pas représenté sur la figure 1.To simplify reading, the locking device 5 is not shown in figure 1.

L'articulation du contre-appui se fait sur le haut des montants.The articulation of the counter-support is on the top of the uprights.

Le contre-appui porte, sur sa face tournée vers les montants, une ferrure 6 légèrement écartée de la face du contre-appui derrière laquelle ferrure glisse l'extrémité d'une pièce triangulaire 5A dont la base est articulée sur l'arrière des montants.The counter-support carries, on its face facing the uprights, a fitting 6 slightly away from the face of the counter-support behind which the fitting slides the end of a triangular piece 5A whose base is articulated on the rear of the amounts.

Cette pièce 5A triangulaire est, par exemple, formée à partir d'un fil rond plié de telle sorte qu'il forme une sorte de Vé dont les extrémités libres 5C sont engagées dans des ferrures 5D portées par les montants 2 pour former une articulation.This triangular part 5A is, for example, formed from a folded round wire so that it forms a kind of Vé whose free ends 5C are engaged in 5D fittings carried by the uprights 2 to form a joint.

Cette pièce triangulaire 5A présente en sa partie opposée à l'articulation précitée un passant 20 qui coulisse au long de la ferrure 6 portée par le contre-appui 4.This triangular part 5A has in its part opposite the articulation aforementioned a passer-by 20 which slides along the fitting 6 carried by the counter-support 4.

Le passant 20 peut être délimité par le fil rond et une tablette 5B s'engageant à l'intérieur du Vé de la pièce triangulaire 5A.The passer-by 20 can be delimited by the round wire and an engaging tablet 5B inside the Vee of the triangular part 5A.

Il pourrait s'agir également d'un passant délimité par le fil rond destiné à former la pièce en V é et une pièce métallique rapportée sur cette pièce triangulaire.It could also be a passer-by delimited by the round wire intended for form the V-shaped part and a metal part attached to this triangular part.

Des raidisseurs 21 transversaux relient les branches du Vé pour une meilleure rigidité. Transverse stiffeners 21 connect the branches of the Vé for better rigidity.

On note que la pointe 22 du Vé est inclinée par rapport au plan contenant les branches et vers le bas afin que le passant 20 coulisse avec un faible jeu de fonctionnement autour de la ferrure 6 du contre-appui.Note that the point 22 of the Vé is inclined relative to the plane containing the branches and down so that the passer-by 20 slides with a slight play of operation around the fitting 6 of the counter-support.

Cette ferrure 6 du contre-appui présente au moins une encoche 23 pour verrouiller en translation la pièce triangulaire 5A en position horizontale.This fitting 6 of the counter-support has at least one notch 23 for lock the triangular part 5A in translation in a horizontal position.

Une deuxième encoche est prévue pour un verrouillage en position repliée.A second notch is provided for locking in the folded position.

Ce dispositif de verrouillage permet de donner une résistance géométrique au tripode ainsi ouvert.This locking device makes it possible to give a geometric resistance to the tripod thus opened.

On note que la face avant des montants est reliée par une plaque 24 rigidifiant l'assemblage en tête et maintenant l'axe de rotation qui est invisible.Note that the front face of the uprights is connected by a plate 24 stiffening the assembly at the head and maintaining the axis of rotation which is invisible.

En rendant indéformable cette disposition en triangle et en déterminant un triangle de sustentation relativement large, l'utilisateur de l'échelle et son centre de gravité restent toujours dans le triangle de sustentation.By making this triangle arrangement non-deformable and by determining a relatively large lift triangle, the user of the scale and its center of gravity always remain in the lift triangle.

Il est pratiquement impossible de verser latéralement.It is practically impossible to pour laterally.

Il faut également constater que, sur le plan ergonomique, l'utilisateur se trouve en poste de travail sur l'avant dernière marche en appui sur le plan d'accès avec pratiquement la hanche à hauteur de la haie et donc à la hauteur adéquate pour l'outil de coupe.It should also be noted that, from an ergonomic point of view, the user found in work station on the penultimate step resting on the access plan with practically the hip at the height of the hedge and therefore at the correct height for the cutting tool.

L'échelle ne peut basculer.The ladder cannot tip over.

Avantageusement, l'angle R défini entre le plan défini par les montants et le contre-appui est de l'ordre de 40°.Advantageously, the angle R defined between the plane defined by the uprights and the counter-support is around 40 °.

L'angle V formé par les deux montants est de l'ordre de 22°.The angle V formed by the two uprights is of the order of 22 °.

La longueur du contre-appui et les angles sont déterminés pour que le centre de gravité soit plus proche du contre-appui de sorte que le poids de l'utilisateur est orienté vers le profilé 4.The length of the counter-support and the angles are determined so that the center gravity is closer to the abutment so that the weight of the user is oriented towards profile 4.

A cet effet, l'angle G entre le sol et le plan contenant les montants est inférieur à l'angle F entre le sol et le contre-appui.For this purpose, the angle G between the ground and the plane containing the uprights is less than the angle F between the ground and the abutment.

Cet angle G est d'environ 65° et l'angle F de 75°.This angle G is approximately 65 ° and the angle F is 75 °.

On note que le fait d'utiliser un contre-appui sous forme d'un seul profilé permet d'introduire ce profilé dans la profondeur d'une haie et donc d'être plus proche de celle-ci. Note that the fact of using a counter-support in the form of a single profile allows to introduce this profile in the depth of a hedge and therefore to be more close to it.

Avantageusement, il est prévu à la base du contre-appui un patin 7 ou sabot d'appui d'étendue largement supérieure à la section du profilé 4 de manière à pouvoir placer ce contre-appui sur un sol meuble.Advantageously, a pad 7 or shoe is provided at the base of the counter-support. of support of far greater extent than the section of the profile 4 so as to ability to place this abutment on loose soil.

Pour augmenter la résistance du profilé 4 ou contre-appui 4, celui-ci est un profilé en Té.To increase the resistance of the profile 4 or counter-support 4, it is a T-shaped.

Lorsqu'il s'agit, notamment, d'une échelle en bois, ce profilé est soit taillé dans la masse, soit constitué de deux pièces de bois assemblées.When it comes, in particular, to a wooden ladder, this profile is either cut into the mass, consisting of two pieces of wood assembled.

Dans une forme de réalisation, les premières traverses depuis le bas sont reliées par une barre 8 de reprise de charge évitant notamment un risque de flexion des traverses les plus longues.In one embodiment, the first sleepers from the bottom are connected by a load take-up bar 8 in particular avoiding a risk of bending the longest ties.

Avantageusement, la face de cette barre 8 tournée vers le contre-appui présentera une rainure pour y loger partiellement le contre-appui.Advantageously, the face of this bar 8 facing the abutment will have a groove to partially accommodate the abutment.

L'arrière de cette barre 8 pourra être pourvue d'un moyen d'accrochage du profilé tel un système boucles et crochets, lequel pourra être partiellement logé dans la rainure précitée.The rear of this bar 8 may be provided with a means for hooking the profiled like a loop and hook system, which can be partially housed in the aforementioned groove.

Selon l'invention, le contre-appui 4 est de longueur variable en sorte qu'on puisse maintenir l'horizontalité des marches même si le sol est pentu dans un sens ou dans l'autre.According to the invention, the counter-support 4 is of variable length so that can maintain the horizontality of the steps even if the ground is sloping in one direction or in the other.

Il comprend donc un moyen 40 de réglage.It therefore includes a means 40 for adjustment.

Bien évidemment, il faut placer son échelle dans le sens de la pente et non en dévers.Obviously, you must place your ladder in the direction of the slope and not in cant.

Dans une première solution, le contre-appui 4 est formé d'au moins un élément télescopique avec un moyen de verrouillage 41, soit pas par pas, soit en tout point.In a first solution, the counter-support 4 is formed of at least one telescopic element with locking means 41, either step by step or in any point.

Suivant le matériau employé, le contre-appui 4 peut être constitué de deux tubes emboítés mais une solution plus résistante et permettant de mettre en oeuvre des profilés plein est décrite ci-après.Depending on the material used, the counter-support 4 may consist of two nested tubes but a more resistant solution and allowing to implement full profiles is described below.

Dans une forme de réalisation, le contre-appui 4 comprend, d'une part, une branche principale 4A qui, s'étendant depuis le haut de l'échelle, est de longueur inférieure à celle des montants et, d'autre part, une branche 4B secondaire constituée de deux profilés maintenus écartés par des pattes 4D, cette branche secondaire venant coiffer la branche principale. In one embodiment, the counter-support 4 comprises, on the one hand, a main branch 4A which, extending from the top of the ladder, is of length lower than the uprights and, on the other hand, a secondary 4B branch made up of two sections kept apart by 4D lugs, this branch secondary coming to cap the main branch.

Des trous 50 dans les deux branches viennent en coïncidence permettant d'y introduire une goupille 51 et ainsi de verrouiller la translation des branches.Holes 50 in the two branches coincide allowing them to introduce a pin 51 and thus lock the translation of the branches.

Dans une forme de réalisation, le contre-appui 4 comprend, d'une part, une branche principale 4A qui, s'étendant depuis le haut de l'échelle, est de longueur inférieure à celle des montants et, d'autre part, une branche 4B secondaire constituée par un profilé présentant une rainure 4E longitudinale venant loger la branche principale, une ou plusieurs pattes 4F venant fermer l'entrée de la rainure pour maintenir la seconde branche sur la première.In one embodiment, the counter-support 4 comprises, on the one hand, a main branch 4A which, extending from the top of the ladder, is of length lower than the uprights and, on the other hand, a secondary 4B branch constituted by a profile having a longitudinal groove 4E which houses the main branch, one or more 4F legs closing the entrance of the groove to keep the second branch on the first.

Avantageusement, on utilisera une première branche 4A ayant une section en Té en sorte que les faces intérieures 4G de la branche horizontale du Té participent au guidage.Advantageously, a first branch 4A will be used having a cross section Tee so that the 4G inner faces of the horizontal branch of the Tee participate guidance.

De telles solutions permettent de réaliser un contre-appui de longueur variable avec tous les types de matériau, tels le bois, les composites, l'aluminium etc ...Such solutions make it possible to produce a counter-support of variable length with all types of material, such as wood, composites, aluminum etc ...

Les longueurs des branches seront déterminées pour que la longueur du contre-appui puisse être inférieure à la longueur des montants ou être supérieure.The lengths of the branches will be determined so that the length of the counter-support can be less than the length of the uprights or be greater.

La plage de variation pourra être de l'ordre du mètre voire plus.The variation range may be of the order of a meter or more.

L'homme du métier est à même de choisir cette plage.Those skilled in the art are able to choose this range.

Claims (5)

Echelle réglable comprenant deux montants (2) reliés par des traverses (3) ou échelons (3) et un contre-appui (4) articulé sur les montants (2),
   cette échelle étant CARACTERISEE : en ce que le contre-appui (4) est de longueur variable et, en ce qu'elle comprend, à distance de son sommet (A), un dispositif (5) dit de verrouillage qui, en position active, s'étend dans un plan (P) parallèle au plan d'appui (R) de l'échelle et verrouille la disposition géométrique des montants (2) et du contre-appui (4). Adjustable ladder comprising two uprights (2) connected by crosspieces (3) or steps (3) and a counter-support (4) articulated on the uprights (2),
this scale being CHARACTERIZED: in that the counter-support (4) is of variable length and, in that it comprises, at a distance from its top (A), a so-called locking device (5) which, in the active position, extends in a plane (P) parallel to the support plane (R) of the ladder and locks the geometric arrangement of the uprights (2) and the counter-support (4). Echelle selon la revendication 1 caractérisée en ce que le contre-appui (4) est formé d'au moins un élément télescopique avec un moyen de verrouillage (41), soit pas par pas, soit en tout point.Ladder according to claim 1 characterized in that the counter-support (4) is formed of at least one telescopic element with a locking means (41), either step by step, or at any point. Echelle selon la revendication 2 caractérisée en ce que le contre-appui (4) comprend, d'une part, une branche principale (4A) qui, s'étendant depuis le haut de l'échelle, est de longueur inférieure à celle des montants et, d'autre part, une branche (4B) secondaire constituée de deux profilés maintenus écartés par des pattes (4D), cette branche secondaire venant coiffer la branche principale.Ladder according to claim 2 characterized in that the counter-support (4) comprises, on the one hand, a main branch (4A) which, extending from the top of the ladder, is of length less than that of the uprights and, on the other hand, a secondary branch (4B) made up of two sections kept apart by lugs (4D), this secondary branch covering the main branch. Echelle selon la revendication 2 caractérisée en ce que le contre-appui (4) comprend, d'une part, une branche principale (4A) qui, s'étendant depuis le haut de l'échelle, est de longueur inférieure à celle des montants et, d'autre part, une branche (4B) secondaire constituée par un profilé présentant une rainure (4E) longitudinale venant loger la branche principale, une ou plusieurs pattes (4F) venant fermer l'entrée de la rainure pour maintenir la seconde branche sur la première.Ladder according to claim 2 characterized in that the counter-support (4) comprises, on the one hand, a main branch (4A) which, extending from the top of the ladder, is of length less than that of the uprights and, on the other hand, a secondary branch (4B) constituted by a profile having a longitudinal groove (4E) coming to accommodate the main branch, one or more lugs (4F) coming to close the entrance of the groove to maintain the second branch on the first. Echelle selon la revendication 2 caractérisée en ce que le contre-appui (4) comprend, d'une part, une branche principale (4A) qui, s'étendant depuis le haut de l'échelle, est de longueur inférieure à celle des montants et, d'autre part, une branche (4B) secondaire, la première branche (4A) comportant une section en Té en sorte que les faces intérieures (4G) de la branche horizontale du Té participent au guidage.Ladder according to claim 2 characterized in that the counter-support (4) comprises, on the one hand, a main branch (4A) which, extending from the top of the ladder, is of length less than that of the uprights and, on the other hand, a secondary branch (4B), the first branch (4A) comprising a T-shaped section so that the internal faces (4G) of the horizontal branch of the T-shaped participate in guiding.
EP03370036A 2002-11-04 2003-10-31 Adjustable ladder Expired - Lifetime EP1416117B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0213729 2002-11-04
FR0213729A FR2846702B1 (en) 2002-11-04 2002-11-04 ADJUSTABLE SCALE

Publications (2)

Publication Number Publication Date
EP1416117A1 true EP1416117A1 (en) 2004-05-06
EP1416117B1 EP1416117B1 (en) 2008-12-17

Family

ID=32088436

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03370036A Expired - Lifetime EP1416117B1 (en) 2002-11-04 2003-10-31 Adjustable ladder

Country Status (4)

Country Link
EP (1) EP1416117B1 (en)
AT (1) ATE417991T1 (en)
DE (1) DE60325318D1 (en)
FR (1) FR2846702B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2459562A (en) * 2008-05-01 2009-11-04 Neil Ernest Baglin Safety ladder construction
CN102936995A (en) * 2012-11-30 2013-02-20 柴敬博 Annular ladder
CN103266849A (en) * 2013-06-13 2013-08-28 苏州新区华士达工程塑胶有限公司 Insulated engineering plastic folding ladder

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1670653A (en) * 1926-06-28 1928-05-22 Frederick Backlund Stepladder
US1729033A (en) * 1927-09-19 1929-09-24 Czischke John Fred Ladder
US2396813A (en) * 1944-06-12 1946-03-19 Frank J Benz Ladder
US2662680A (en) * 1951-10-01 1953-12-15 Lawrence E Bronson Stepladder
GB1012669A (en) * 1963-06-18 1965-12-08 Stephens & Carter Ltd Improvements in and relating to ladders
AU478206B2 (en) * 1972-08-28 1975-02-27 Charles Smith Francis Improvements in section shape of stiles of extension ladders
DE4402760A1 (en) * 1994-01-07 1994-10-27 Dietmar Boehl Three-legged free-standing ladder with a variable-length standing foot
US5590739A (en) * 1994-11-01 1997-01-07 High; Dewayne A. Adjustable extension stepladder
GB2327973A (en) * 1997-08-06 1999-02-10 Evan Garnett William Multi - purpose three - legged stepladder

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US548670A (en) * 1895-10-29 Step-ladder
US1259239A (en) * 1917-10-03 1918-03-12 Conradin Jecklin Orchard-ladder.
DE9116598U1 (en) * 1991-12-02 1993-05-27 Böhle, Christian, 3548 Arolsen Device for supporting a telescopic ladder

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1670653A (en) * 1926-06-28 1928-05-22 Frederick Backlund Stepladder
US1729033A (en) * 1927-09-19 1929-09-24 Czischke John Fred Ladder
US2396813A (en) * 1944-06-12 1946-03-19 Frank J Benz Ladder
US2662680A (en) * 1951-10-01 1953-12-15 Lawrence E Bronson Stepladder
GB1012669A (en) * 1963-06-18 1965-12-08 Stephens & Carter Ltd Improvements in and relating to ladders
AU478206B2 (en) * 1972-08-28 1975-02-27 Charles Smith Francis Improvements in section shape of stiles of extension ladders
DE4402760A1 (en) * 1994-01-07 1994-10-27 Dietmar Boehl Three-legged free-standing ladder with a variable-length standing foot
US5590739A (en) * 1994-11-01 1997-01-07 High; Dewayne A. Adjustable extension stepladder
GB2327973A (en) * 1997-08-06 1999-02-10 Evan Garnett William Multi - purpose three - legged stepladder

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2459562A (en) * 2008-05-01 2009-11-04 Neil Ernest Baglin Safety ladder construction
CN102936995A (en) * 2012-11-30 2013-02-20 柴敬博 Annular ladder
CN103266849A (en) * 2013-06-13 2013-08-28 苏州新区华士达工程塑胶有限公司 Insulated engineering plastic folding ladder

Also Published As

Publication number Publication date
FR2846702A1 (en) 2004-05-07
FR2846702B1 (en) 2006-01-20
DE60325318D1 (en) 2009-01-29
EP1416117B1 (en) 2008-12-17
ATE417991T1 (en) 2009-01-15

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