EP1231356B1 - Ladder with a level-compensating device - Google Patents

Ladder with a level-compensating device Download PDF

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Publication number
EP1231356B1
EP1231356B1 EP01128781A EP01128781A EP1231356B1 EP 1231356 B1 EP1231356 B1 EP 1231356B1 EP 01128781 A EP01128781 A EP 01128781A EP 01128781 A EP01128781 A EP 01128781A EP 1231356 B1 EP1231356 B1 EP 1231356B1
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EP
European Patent Office
Prior art keywords
clamping
ladder
strut
clamping apparatus
actuating lever
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP01128781A
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German (de)
French (fr)
Other versions
EP1231356A3 (en
EP1231356A2 (en
Inventor
Rudolf Pfeifer
Manfred Klaas
Edgar Kunz
Norbert Dross
Ulrich Weigel
Martin Gaubatz
Gerhard Müller
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.)
Hailo Werk Rudolf Loh GmbH and Co KG
Original Assignee
Hailo Werk Rudolf Loh GmbH and Co KG
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Publication date
Priority claimed from DE10109947A external-priority patent/DE10109947A1/en
Application filed by Hailo Werk Rudolf Loh GmbH and Co KG filed Critical Hailo Werk Rudolf Loh GmbH and Co KG
Publication of EP1231356A2 publication Critical patent/EP1231356A2/en
Publication of EP1231356A3 publication Critical patent/EP1231356A3/en
Application granted granted Critical
Publication of EP1231356B1 publication Critical patent/EP1231356B1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/42—Ladder feet; Supports therefor
    • E06C7/44—Means for mounting ladders on uneven ground

Definitions

  • the present invention relates to a ladder comprising two parallel spars, between these two spars transversely extending ladder rungs and a wider transverse lower stand part with two support points on the ground forming feet respectively at the ends, wherein means for leveling is provided, if provided both contact points of the underground are at different heights.
  • a ladder according to the preamble of claim 1 is made EP-A-0894937 known.
  • the object of the present invention is to provide a ladder of the type mentioned, which has a device for leveling, which works permanently trouble-free and their operation, the stability of the ladder is not affected.
  • an arcuate strut which is part of the wider lower lower part of the ladder.
  • the two ends of this arcuate strut form the two support points with the feet, with which the ladder rests on the ground.
  • This arcuate strut is displaceable relative to the ladder struts on a curved line.
  • a clamping device is provided, by means of which the arcuate strut can be fixed to the adjacent lowest ladder rung.
  • the clamping force of this clamping device is designed so that these from the side, d. H. acts substantially horizontally on the arcuate strut when erected ladder.
  • the formation of the clamping device is further such that when it is tightened, the arcuate strut is not bent or displaced.
  • the invention provides, the clamping device in two parts form with two approximately similarly shaped halves. These two halves can be pressed against one another substantially horizontally upon actuation of an actuating element with erected conductor. These two halves form a receptacle for said arcuate strut in the closed state. In the released position of the clamping device, this arcuate strut is then freely displaceable in this recording along the arc line, while the arcuate strut in the Clamping position is held by the clamping force of the two halves pressed against each other.
  • a particularly preferred variant of the invention provides that the actuating element for the clamping device is an actuatable by foot operating lever.
  • the operation of the clamping device is particularly convenient because the operator does not have to bend down.
  • Such an actuating lever for example, in the released position are approximately in a horizontal position and be moved by about 90 ° from this horizontal position by foot pressure from above into an approximately vertical clamping position.
  • the structural design of this clamping mechanism provides that the actuating lever is an eccentric lever, or an eccentric element which acts in such a way that in the clamping position, the two profile halves of the clamping device are pressed against each other and thereby exert a positive connection or frictional engagement on the arcuate strut, which makes them immovable.
  • the actuating lever with the eccentric element can be easily solved in this variant by pulling also by foot upwards. Subsequently, the arcuate strut is moved to the desired position and then the operating lever is moved back into the clamping position by pressure from above by foot.
  • the clamping device is fixed to the lowermost ladder rung, so that when moving the arcuate strut to adjust the corresponding leveling position, the clamping device remains in its position relative to the lowermost ladder rung.
  • This can be solved according to a preferred variant of the invention, for example, by the fact that the clamping device has an upper receptacle which surrounds the lowermost ladder rung approximately positively and which is fixed to this. D. h. That the clamping device is immovable even in the released position along the ladder rung.
  • the two halves preferably have in their upper region of the receptacle, which is fixed to the lowest ladder rung and in its lower Area they have the receptacle for the arcuate strut, in which the arcuate strut is displaced after loosening the clamping device.
  • the arcuate strut may, for example, be a tubular strut which is flat oval, oval or round in cross section.
  • the recording of the clamping device which is preferably formed by the two profile halves, is then shaped according to this cross section of the tube strut.
  • the inclusion of the two profile halves for the lower rung of the ladder is usually approximately rectangular, since such ladder rungs are often also approximately rectangular in outline.
  • the clamping device can be made for example of two extruded profile halves, each shaped similarly.
  • the eccentric element of the actuating lever can for example be designed so that the operating lever exerts a train on a tension element when moving from the dissolved into the clamping position by changing the center distance of an eccentric, which has an abutment on one of the two profile halves.
  • the actuating lever exerts a train on a tension element when moving from the dissolved into the clamping position by changing the center distance of an eccentric, which has an abutment on one of the two profile halves.
  • FIG. 1 The illustration according to the invention shows a conductor 10 of the type to which, for example, the present invention is applicable.
  • This ladder 10 has two spigot parts connected to one another in an articulated manner, which assume an acute angle to one another in the erected position of the ladder 10.
  • this consists of a sprout part of parallel bars 11, 12 between which cross-sectional ladder rails 13 extend.
  • a device for leveling is provided on the two bars 11, 12 when both support points of the sprout part lie on the ground in different heights.
  • an arcuate strut 14 is present, which as you can see in the transverse direction is wider than the sprout part and forms together with the two foot parts 15, 16 at their ends a lower stationary part of the conductor 10.
  • a clamping device 20 is provided, after the release of the arcuate strut 14 relative to the two ladder struts 11, 12th can be displaced following an arc of its contour to a position in which the required level compensation results, so that the sprout part with the two bars 11, 12 is aligned vertically. When this position is reached, the clamping device 20 is actuated so that it defines the arcuate strut 14 in this position.
  • the exact function of the mechanism of the clamping device 20 will be described below with reference to the further drawings FIGS. 3 to 5 explained in more detail.
  • FIG. 3 shows an enlarged perspective view of a portion of the lower portion of the ladder 10, in which one can recognize a spar 12 of the ladder 10 and a portion of the arcuate strut 14 and the lowest ladder rung 13.
  • the device 20 for leveling off two interconnectable profile halves 22, 23, the z. B. extrusion profiles can be.
  • This device also comprises an actuating lever 21, which in FIG. 3 is shown in the dissolved approximately horizontal position.
  • This actuating lever 21 can now be operated with the foot and be pivoted from the approximately horizontal in a vertical position downwards, whereby it is achieved that the two profile halves 22, 23 are pressed against each other.
  • each of the two profile halves 22, 23 in principle of three sections and that a section 26 which forms approximately half a rectangle, a central recessed portion 27, in the region in which a profile half 22 of the actuating lever 21 is articulated and a third section 28 which is shaped approximately corresponding to a half oval.
  • the two opposite sections 26 of both profile halves 22, 23 form the inside a rectangular receptacle 25 for how to look FIG. 3 and FIG. 5 recognizes rectangular ladder rung 13.
  • the two opposite sections 28 of the two profile halves 22, 23 form on the inside a flat-oval shaped receptacle 24 for the in outline also flat oval arcuate tubular strut 14, which is in cross section in FIG. 5 can recognize.
  • both profile halves 22, 23 abut each other in the clamping position.
  • These sections 30, 31, 32, 29 thus form, as it were, the abutments on which the two opposite profile halves 22, 23 are supported.
  • Both profile halves are predominantly symmetrical with respect to a longitudinal plane through the clamping device, with the exception of the one end in the area 29.
  • the two profile halves 22, 23 slightly different shaped and thereby have projections 38, 39 which are shaped so that both profile halves mesh in the region of these projections.
  • the one of the two projections 39 on the one profile half 22 is approximately cylindrical or circular in side view and the other of the two projections 38 of the other profile half 23 is annular in side view, wherein the interior is shaped so that it forms the other Anformung 39 receives positively.
  • the Anformung 38 thus overlaps the Anformung 39 of the other profile half 22, so that on this side of the clamping device 20, a joint is formed.
  • the actuating lever 21 has an eccentric head 33, as can be seen from FIG. 5 can recognize.
  • the actuating lever 21 is thus eccentrically and pivotally mounted on one of the two profile halves 22.
  • the eccentric head 33 is pivotally connected to the one end 37 of a Bolzens 34. It can also be used a screw instead.
  • the bolt 34 then has, for example, a head 35 or a screw with a screw head or nut is used.
  • the nut 35 has the region 36 in the middle section of the second profile half 23 as an abutment. Now, the actuating lever 21 with the eccentric head 33 in the direction of arrow in FIG.
  • the two profile halves 22, 23 are connected in the region of the receptacle 25 in the released position of the clamping device with the ladder rung 13 so that when moving the tubular strut 14 in the released position, the two profile halves with the clamping device not can move with, but are held on the lower rung 13.
  • the eccentricity results from the fact that the contact area of the eccentric head 33 from the pivot axis of the actuating lever 21 in the in FIG. 5 shown clamping position has a slightly greater distance than the support area, which results in pivoting of the actuating lever 21 by 90 ° in the released position.
  • the actuating lever 21 moves with the eccentric head 33 when closing the clamping device via a dead center.
  • the nut 35 on the opposite side of the two profile halves 22, 23 is as you look FIG. 5 detects, not directly on the profile half 23, but on an intermediate slightly elastic ring member 38 to facilitate pivoting when closing the clamping device beyond the dead center addition. By the dead center is also ensured that the actuating lever 21 remains in the closed position shown in FIG.
  • a significant advantage of the clamping device according to the invention is that the clamping force is generated on the arcuate strut 14 by frictional engagement in the receptacle 24 around, but when tightening the clamping device no force component is created, which moves the tubular strut 14 against the ladder rung 13, as such Displacement of the tubular strut 14 on the ladder rung 13 leads to a deformation of the strut 14 or creating a game in their storage, which is problematic.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)
  • Filters And Equalizers (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

Ladder comprises rungs arranged between two parallel side rails (11, 12), a lower stand part having two feet forming bearing points, and a leveling device. The leveling device consists of a curved bar (14) which is moved along a curve relative to the side rails, and a clamping device (20) attached to the lowermost rung (13) adjacent to the curved bar for fixing the curved bar in the desired position. The clamping device is designed so that the clamping force acts on the curved bar from the side, i.e. horizontally /at the periphery, when the ladder is upright. Preferred Features: The clamping device consists of two similar halves pressed together by an operating element and forming a holder for the curved bar. The curved bar moves freely within the released clamping device and is held in the clamping position by the clamping force when the device is activated.

Description

Die vorliegende Erfindung betrifft eine Leiter umfassend zwei parallele Holme, zwischen diesen beiden Holmen in Querrichtung verlaufende Leitersprossen und ein in Querrichtung breiteres unteres Standteil mit zwei die Auflagepunkte auf dem Untergrund bildenden Standfüßen jeweils an den Enden, wobei eine Einrichtung für einen Niveauausgleich vorgesehen ist, sofern beide Auflagepunkte des Untergrunds in unterschiedlicher Höhe liegen.The present invention relates to a ladder comprising two parallel spars, between these two spars transversely extending ladder rungs and a wider transverse lower stand part with two support points on the ground forming feet respectively at the ends, wherein means for leveling is provided, if provided both contact points of the underground are at different heights.

Bei Sprossenleitern der genannten Art besteht das Problem, dass der Untergrund, auf dem diese aufgestellt wird, häufig nicht plan ist, sondern kleinere Unebeneinheiten aufweist oder aber auch eine schiefe Ebene in Richtung quer zu den beiden Leiterholmen aufweist. Dieses Problem besteht auch bei Leitern mit zwei Sprossenteilen, die so aufgestellt werden, dass beide Sprossenteile im spitzen Winkel zueinander ausgerichtet sind. Zur Lösung dieser Problematik sind verschiedene Vorschläge aus dem Stand der Technik bekannt geworden. Beispielsweise kann man einen Niveauausgleich dadurch schaffen, dass man das untere Standteil schwenkbar ausbildet, so dass dieses in einem Winkel zu der untersten Leitersprosse ausgerichtet ist und die beiden Auflagepunkte der Leiter dann in unterschiedlicher Höhe liegen. Es gibt auch andere Einrichtungen, die mit einer Klemmschraube arbeiten, was jedoch einerseits zu dem Problem führt, dass durch Druck der Klemmschraube auf eine Strebe diese aus ihrer ursprünglichen Lage gebracht wird und sich verbiegt oder Spiel an ihren Endpunkten bekommt. Durch dieses Spiel wird ein Kippen der Leiter veranlasst und die Standsicherheit beeinträchtigt. Außerdem ist die Bedienung solcher Klemmschrauben für den Einstellmechanismus zum Niveauausgleich umständlich. Weiter hat sich gezeigt, dass bei Leitern, die in der Regel im Freien benutzt werden, das Gewinde einer solchen Klemmschraube nach häufiger Betätigung schadhaft wird und sich die Schraube nicht mehr drehen lässt.In rung ladders of the type mentioned there is the problem that the substrate on which it is placed, is often not plan, but has smaller unevenness units or also has an inclined plane in the direction transverse to the two ladder beams. This problem also exists with ladders with two spine parts, which are set up so that both spit parts are aligned at an acute angle to each other. To solve this problem, various proposals from the prior art have become known. For example, you can create a level compensation by making the lower stand part pivotally, so that it is aligned at an angle to the bottom rung of the ladder and the two contact points of the ladder then lie at different heights. There are also other devices that work with a clamping screw, but on the one hand leads to the problem that is brought by pressure of the clamping screw on a strut from its original position and bends or gets game at their end points. This game causes a tilting of the ladder and the stability is impaired. In addition, the operation of such clamping screws for the adjustment mechanism for leveling is cumbersome. It has also been shown that in ladders, which are usually used outdoors, the thread of such a clamping screw after frequent Operation is defective and the screw can not turn.

Eine Leiter gemäß Oberbegriff des Anspruchs 1 ist aus EP-A-0894937 bekannt.A ladder according to the preamble of claim 1 is made EP-A-0894937 known.

Die Aufgabe der vorliegenden Erfindung besteht darin, eine Leiter der eingangs genannten Gattung zu schaffen, welche eine Einrichtung für einen Niveauausgleich aufweist, welche dauerhaft störungsfrei arbeitet und durch deren Betätigung die Standsicherheit der Leiter nicht beeinträchtigt wird.The object of the present invention is to provide a ladder of the type mentioned, which has a device for leveling, which works permanently trouble-free and their operation, the stability of the ladder is not affected.

Die Lösung dieser Aufgabe liefert eine erfindungsgemäße Leiter der eingangs genannten Gattung mit den kennzeichnenden Merkmalen des Hauptanspruchs.The solution to this problem provides a conductor according to the invention of the type mentioned above with the characterizing features of the main claim.

Erfindungsgemäß ist vorgesehen, dass für die Einrichtung zum Niveauausgleich eine bogenförmige Strebe vorgesehen ist, die Teil des breiteren unteren Standteils der Leiter ist. Die beiden Enden dieser bogenförmigen Strebe bilden die beiden Auflagepunkte mit den Standfüßen, mit denen die Leiter auf dem Untergrund aufsteht. Diese bogenförmige Strebe ist gegenüber den Leiterholmen auf einer Bogenlinie verschiebbar. Weiterhin ist eine Klemmvorrichtung vorgesehen, mittels derer die bogenförmige Strebe an der benachbarten untersten Leitersprosse festgelegt werden kann. Dabei ist die Klemmkraft dieser Klemmvorrichtung so ausgelegt, dass diese von der Seite her, d. h. bei aufgestellter Leiter im wesentlichen horizontal auf die bogenförmige Strebe einwirkt. Die Ausbildung der Klemmvorrichtung ist weiterhin so, dass bei deren Anziehen die bogenförmige Strebe nicht verbogen oder verlagert wird.According to the invention it is provided that for the device for leveling an arcuate strut is provided, which is part of the wider lower lower part of the ladder. The two ends of this arcuate strut form the two support points with the feet, with which the ladder rests on the ground. This arcuate strut is displaceable relative to the ladder struts on a curved line. Furthermore, a clamping device is provided, by means of which the arcuate strut can be fixed to the adjacent lowest ladder rung. The clamping force of this clamping device is designed so that these from the side, d. H. acts substantially horizontally on the arcuate strut when erected ladder. The formation of the clamping device is further such that when it is tightened, the arcuate strut is not bent or displaced.

Die Erfindung sieht vor, die Klemmvorrichtung zweiteilig auszubilden mit zwei etwa ähnlich geformten Hälften. Diese beiden Hälften können bei Betätigung eines Betätigungselements bei aufgestellter Leiter im wesentlichen horizontal gegeneinander gepresst werden. Diese beiden Hälften bilden im geschlossenen Zustand eine Aufnahme für die genannte bogenförmige Strebe. In der gelösten Position der Klemmvorrichtung ist diese bogenförmige Strebe dann in dieser Aufnahme entlang der Bogenlinie frei verschiebbar, während die bogenförmige Strebe in der Klemmstellung durch die Klemmkraft der beiden gegeneinander gepressten Hälften festgehalten wird.The invention provides, the clamping device in two parts form with two approximately similarly shaped halves. These two halves can be pressed against one another substantially horizontally upon actuation of an actuating element with erected conductor. These two halves form a receptacle for said arcuate strut in the closed state. In the released position of the clamping device, this arcuate strut is then freely displaceable in this recording along the arc line, while the arcuate strut in the Clamping position is held by the clamping force of the two halves pressed against each other.

Eine besonders bevorzugte Variante der Erfindung sieht vor, dass das Betätigungselement für die Klemmvorrichtung ein per Fuß betätigbarer Betätigungshebel ist. Auf diese Weise ist die Bedienung der Klemmvorrichtung besonders bequem, da sich die Bedienungsperson nicht bücken muss. Ein solcher Betätigungshebel kann beispielsweise in der gelösten Position sich etwa in horizontaler Lage befinden und etwa um 90° aus dieser horizontalen Lage durch Fußdruck von oben her in eine etwa vertikale Klemmposition bewegt werden. Die konstruktive Ausbildung dieses Klemmmechanismus sieht vor, dass der Betätigungshebel ein Exzenterhebel ist, bzw. ein Exzenterelement umfasst, welches derart wirkt, dass in der Klemmposition die beiden Profilhälften der Klemmvorrichtung gegeneinander gepresst werden und dadurch einen Formschluss bzw. Reibschluss an der bogenförmigen Strebe ausüben, wodurch diese unverschiebbar wird. Der Betätigungshebel mit dem Exzenterelement kann bei dieser Variante durch Ziehen ebenfalls per Fuß nach oben hin einfach gelöst werden. Anschließend wird die bogenförmige Strebe in die gewünschte Position verschoben und danach wird durch Druck von oben her per Fuß der Betätigungshebel wieder in die Klemmposition bewegt.A particularly preferred variant of the invention provides that the actuating element for the clamping device is an actuatable by foot operating lever. In this way, the operation of the clamping device is particularly convenient because the operator does not have to bend down. Such an actuating lever, for example, in the released position are approximately in a horizontal position and be moved by about 90 ° from this horizontal position by foot pressure from above into an approximately vertical clamping position. The structural design of this clamping mechanism provides that the actuating lever is an eccentric lever, or an eccentric element which acts in such a way that in the clamping position, the two profile halves of the clamping device are pressed against each other and thereby exert a positive connection or frictional engagement on the arcuate strut, which makes them immovable. The actuating lever with the eccentric element can be easily solved in this variant by pulling also by foot upwards. Subsequently, the arcuate strut is moved to the desired position and then the operating lever is moved back into the clamping position by pressure from above by foot.

Vorzugsweise ist außerdem die Klemmvorrichtung an der untersten Leitersprosse festgelegt, damit bei Verschieben der bogenförmigen Strebe zur Einstellung der entsprechenden Niveauausgleichsstellung die Klemmvorrichtung in ihrer Position gegenüber der untersten Leitersprosse verbleibt. Dies kann man gemäß einer bevorzugten Variante der Erfindung beispielsweise dadurch lösen, dass die Klemmvorrichtung eine obere Aufnahme aufweist, die die unterste Leitersprosse etwa formschlüssig umgibt und die an dieser festgelegt ist. D. h., dass die Klemmvorrichtung auch in der gelösten Stellung entlang der Leitersprosse unverschiebbar ist. Wenn man beispielsweise eine Klemmvorrichtung mit zwei etwa ähnlich geformten Hälften der genannten Art verwendet, weisen die beiden Hälften vorzugsweise in ihrem oberen Bereich die Aufnahme auf, die an der untersten Leitersprosse festgelegt ist und in ihrem unteren Bereich weisen sie die Aufnahme für die bogenförmige Strebe auf, in der die bogenförmige Strebe nach Lösen der Klemmvorrichtung verschiebbar ist.Preferably, moreover, the clamping device is fixed to the lowermost ladder rung, so that when moving the arcuate strut to adjust the corresponding leveling position, the clamping device remains in its position relative to the lowermost ladder rung. This can be solved according to a preferred variant of the invention, for example, by the fact that the clamping device has an upper receptacle which surrounds the lowermost ladder rung approximately positively and which is fixed to this. D. h. That the clamping device is immovable even in the released position along the ladder rung. For example, if one uses a clamping device with two approximately similarly shaped halves of the type mentioned, the two halves preferably have in their upper region of the receptacle, which is fixed to the lowest ladder rung and in its lower Area they have the receptacle for the arcuate strut, in which the arcuate strut is displaced after loosening the clamping device.

Die bogenförmige Strebe kann beispielsweise eine Rohrstrebe sein, die im Querschnitt flachoval, oval oder rund ist. Die Aufnahme der Klemmvorrichtung, die vorzugsweise durch die beiden Profilhälften gebildet wird, ist dann entsprechend diesem Querschnitt der Rohrstrebe geformt. Die Aufnahme der beiden Profilhälften für die untere Leitersprosse ist in der Regel etwa rechteckig, da derartige Leitersprossen häufig ebenfalls im Umriss etwa rechteckig sind. Die Klemmvorrichtung kann beispielsweise aus zwei stranggepressten Profilhälften hergestellt werden, die jeweils ähnlich geformt sind.The arcuate strut may, for example, be a tubular strut which is flat oval, oval or round in cross section. The recording of the clamping device, which is preferably formed by the two profile halves, is then shaped according to this cross section of the tube strut. The inclusion of the two profile halves for the lower rung of the ladder is usually approximately rectangular, since such ladder rungs are often also approximately rectangular in outline. The clamping device can be made for example of two extruded profile halves, each shaped similarly.

Das Exzenterelement des Betätigungshebels kann beispielsweise so ausgebildet sein, dass der Betätigungshebel bei Umlegen aus der gelösten in die Klemmposition durch die Änderung des Achsabstands eines Exzenterkopfs einen Zug auf ein Zugelement ausübt, welches an einer der beiden Profilhälften ein Widerlager hat. Dadurch wird bei Herunterdrücken des Betätigungshebels die eine der beiden Profilhälften angezogen und gegen die andere Profilhälfte gepresst.The eccentric element of the actuating lever can for example be designed so that the operating lever exerts a train on a tension element when moving from the dissolved into the clamping position by changing the center distance of an eccentric, which has an abutment on one of the two profile halves. As a result, upon depression of the actuating lever, one of the two profile halves is tightened and pressed against the other profile half.

Die in den Unteransprüchen genannten Merkmale betreffen bevorzugte Weiterbildungen der erfindungsgemäßen Aufgabenlösung. Weitere Vorteile der Erfindung ergeben sich aus der nachfolgenden Detailbeschreibung.The features mentioned in the dependent claims relate to preferred developments of the task solution according to the invention. Further advantages of the invention will become apparent from the following detailed description.

Die Erfindung wird nachfolgend anhand von Ausführungsbeispielen unter Bezugnahme auf die beiliegenden Zeichnungen näher beschrieben. Dabei zeigen,

Fig. 1
eine beispielhafte Ansicht einer erfindungsgemäßen Leiter;
Fig. 2
eine Detailansicht einer erfindungsgemäßen Leiter in dem unteren Bereich, in dem die Leiter auf dem Untergrund aufsteht;
Fig. 3
eine vergrößerte Detailansicht einer erfindungsgemäßen Leiter mit der Einrichtung für den Niveauausgleich;
Fig. 4
eine Ansicht eines Teils der Einrichtung für den Niveauausgleich;
Fig. 5
eine Schnittdarstellung zur Erläuterung der Einrichtung für den Niveauausgleich.
The invention will be described in more detail below by means of embodiments with reference to the accompanying drawings. Show
Fig. 1
an exemplary view of a conductor according to the invention;
Fig. 2
a detailed view of a conductor according to the invention in the lower region, in which the ladder stands on the ground;
Fig. 3
an enlarged detail of a conductor according to the invention with the device for leveling;
Fig. 4
a view of part of the device for leveling;
Fig. 5
a sectional view for explaining the device for leveling.

Zunächst wird auf Fig. 1 Bezug genommen. Die erfindungsgemäße Darstellung zeigt eine Leiter 10 des Typs, auf den beispielsweise die vorliegende Erfindung anwendbar ist. Diese Leiter 10 weist zwei gelenkig miteinander verbundene Sprossenteile auf, die in der aufgestellten Position der Leiter 10 einen spitzen Winkel zueinander einnehmen. Im Rahmen der Erfindung ist nur der untere Bereich des einen Sprossenteils interessant, da sich dort die Einrichtung für den Niveauausgleich befindet. Wie man aus Figur 2 erkennen kann, besteht dieses eine Sprossenteil aus parallelen Holmen 11, 12 zwischen denen in Querrichtung Leitersprossen 13 verlaufen. Im unteren Endbereich des Sprossenteils ist an den beiden Holmen 11, 12 eine Einrichtung für einen Niveauausgleich vorgesehen, wenn beide Auflagepunkte des Sprossenteils auf dem Untergrund in unterschiedlicher Höhe liegen. Dabei ist eine bogenförmige Strebe 14 vorhanden, die wie man sieht in Querrichtung breiter ist als das Sprossenteil und die zusammen mit den beiden Fußteilen 15, 16 an ihren Enden ein unteres Standteil der Leiter 10 bildet. Außerdem ist eine Klemmvorrichtung 20 vorgesehen, nach deren Lösen die bogenförmige Strebe 14 gegenüber den beiden Leiterholmen 11, 12 auf einer Bogenlinie ihrer Kontur folgend verschiebbar ist bis in eine Stellung, in der sich der erforderliche Niveauausgleich ergibt, so dass das Sprossenteil mit den beiden Holmen 11, 12 senkrecht ausgerichtet ist. Wenn diese Stellung erreicht ist, wird die Klemmvorrichtung 20 so betätigt, dass sie die bogenförmige Strebe 14 in dieser Position festlegt. Die genaue Funktion des Mechanismus der Klemmvorrichtung 20 wird nachfolgend unter Bezugnahme auf die weiteren Zeichnungen Figuren 3 bis 5 näher erläutert.First, it will open Fig. 1 Referenced. The illustration according to the invention shows a conductor 10 of the type to which, for example, the present invention is applicable. This ladder 10 has two spigot parts connected to one another in an articulated manner, which assume an acute angle to one another in the erected position of the ladder 10. In the context of the invention, only the lower portion of a sprout part is interesting, since there is the device for leveling. How to get out FIG. 2 can recognize, this consists of a sprout part of parallel bars 11, 12 between which cross-sectional ladder rails 13 extend. In the lower end of the sprout part a device for leveling is provided on the two bars 11, 12 when both support points of the sprout part lie on the ground in different heights. In this case, an arcuate strut 14 is present, which as you can see in the transverse direction is wider than the sprout part and forms together with the two foot parts 15, 16 at their ends a lower stationary part of the conductor 10. In addition, a clamping device 20 is provided, after the release of the arcuate strut 14 relative to the two ladder struts 11, 12th can be displaced following an arc of its contour to a position in which the required level compensation results, so that the sprout part with the two bars 11, 12 is aligned vertically. When this position is reached, the clamping device 20 is actuated so that it defines the arcuate strut 14 in this position. The exact function of the mechanism of the clamping device 20 will be described below with reference to the further drawings FIGS. 3 to 5 explained in more detail.

Figur 3 zeigt eine vergrößerte perspektivische Ansicht eines Teils des unteren Bereichs der Leiter 10, in der man den einen Holm 12 der Leiter 10 erkennen kann sowie einen Teil der bogenförmigen Strebe 14 und die unterste Leitersprosse 13. Man sieht, dass die Einrichtung 20 für den Niveauausgleich aus zwei miteinander verbindbaren Profilhälften 22, 23 besteht, die z. B. Strangpressprofile sein können. Diese Einrichtung umfasst außerdem einen Betätigungshebel 21, der in Figur 3 in der gelösten etwa waagrechten Position dargestellt ist. Dieser Betätigungshebel 21 kann nun mit dem Fuß betätigt und aus der etwa waagrechten in eine senkrechte Position nach unten geschwenkt werden, wodurch erreicht wird, dass die beiden Profilhälften 22, 23 gegeneinander gepresst werden. Dadurch entsteht ein Reibschluss an der bogenförmigen Strebe 14, die dann fest umschlossen wird und nicht mehr quer gegenüber den Holmen 11, 12 verschiebbar ist. Die Klemmwirkung der Klemmvorrichtung 20 bei Betätigung des Betätigungshebels 21 beruht auf einem Exzentermechanismus, der nachfolgend unter Bezugnahme auf die Figuren 4 und 5 näher erläutert wird. FIG. 3 shows an enlarged perspective view of a portion of the lower portion of the ladder 10, in which one can recognize a spar 12 of the ladder 10 and a portion of the arcuate strut 14 and the lowest ladder rung 13. It can be seen that the device 20 for leveling off two interconnectable profile halves 22, 23, the z. B. extrusion profiles can be. This device also comprises an actuating lever 21, which in FIG. 3 is shown in the dissolved approximately horizontal position. This actuating lever 21 can now be operated with the foot and be pivoted from the approximately horizontal in a vertical position downwards, whereby it is achieved that the two profile halves 22, 23 are pressed against each other. This results in a frictional engagement with the arcuate strut 14, which is then firmly enclosed and no longer transversely to the bars 11, 12 is displaceable. The clamping action of the clamping device 20 upon actuation of the actuating lever 21 is based on an eccentric mechanism, which will be described below with reference to FIGS FIGS. 4 and 5 is explained in more detail.

In Figur 4 sind nur die beiden Profilhälften 22, 23 und der Betätigungshebel 21 in der gelösten Stellung dargestellt. Wie man erkennt, besteht jede der beiden Profilhälften 22, 23 im Prinzip aus drei Abschnitten und zwar einem Abschnitt 26, der etwa ein halbes Rechteck bildet, einem mittleren zurückspringenden Abschnitt 27, in dessen Bereich bei der einen Profilhälfte 22 der Betätigungshebel 21 angelenkt ist und einem dritten Abschnitt 28, der etwa entsprechend einem halben Oval geformt ist. Die beiden gegenüberliegenden Abschnitte 26 beider Profilhälften 22, 23 bilden innenseitig eine rechteckige Aufnahme 25 für die wie man aus Figur 3 und Figur 5 erkennt rechteckige Leitersprosse 13. Die beiden gegenüberliegenden Abschnitte 28 der beiden Profilhälften 22, 23 bilden innenseitig eine flachoval geformte Aufnahme 24 für die im Umriss ebenfalls flachovale bogenförmige Rohrstrebe 14, die man im Querschnitt in Figur 5 erkennen kann. In den Bereichen 31 bzw. 32, die diese beiden Aufnahmen 25 bzw. 24 jeweils innenseitig begrenzen und in den beiden die Aufnahmen außenseitig begrenzenden Abschnitten 30 und 29 stoßen beide Profilhälften 22, 23 in der Klemmposition aneinander. Diese Abschnitte 30, 31, 32, 29 bilden also sozusagen die Widerlager, an denen sich die beiden gegenüberliegenden Profilhälften 22, 23 abstützen. Beide Profilhälften sind überwiegend bezüglich einer längs durch die Klemmvorrichtung gelegten Ebene symmetrisch, mit Ausnahme des einen Endes in dem Bereich 29. Dort sind die beiden Profilhälften 22, 23 etwas unterschiedlich geformt und weisen dabei Anformungen 38, 39 auf, die so geformt sind, dass beide Profilhälften im Bereich dieser Anformungen ineinander greifen. Die eine der beiden Anformungen 39 an der einen Profilhälfte 22 ist dabei etwa zylindrisch bzw. in der Seitenansicht kreisförmig und die andere der beiden Anformungen 38 der anderen Profilhälfte 23 ist in der Seitenansicht ringförmig, wobei der Innenraum so geformt ist, dass er die andere Anformung 39 formschlüssig aufnimmt. Die Anformung 38 übergreift also die Anformung 39 der anderen Profilhälfte 22, so dass an dieser Seite der Klemmvorrichtung 20 ein Gelenk ausgebildet wird. Dadurch wird erreicht, dass bei Umlegen des Betätigungshebels 21 in die Klemmposition die beiden Profilhälften 22, 23 an der einen Seite wo sich die Anformungen 38, 39 befinden, zusammengehalten werden, während beim Öffnen der Klemmvorrichtung in die in Figur 4 dargestellte Position die beiden Profilhälften 22, 23 an der Seite der Anformungen zusammenbleiben und sich so beim Öffnen quasi eine Schwenkbewegung um ein durch die Anformungen 38, 39 gebildetes Gelenk ergibt, wobei die beiden Profilhälften 22, 23 beim Öffnen bzw. Schließen der Klemmvorrichtung natürlich nur um einen geringen Winkelbereich schwenken.In FIG. 4 only the two profile halves 22, 23 and the actuating lever 21 are shown in the released position. As can be seen, each of the two profile halves 22, 23 in principle of three sections and that a section 26 which forms approximately half a rectangle, a central recessed portion 27, in the region in which a profile half 22 of the actuating lever 21 is articulated and a third section 28 which is shaped approximately corresponding to a half oval. The two opposite sections 26 of both profile halves 22, 23 form the inside a rectangular receptacle 25 for how to look FIG. 3 and FIG. 5 recognizes rectangular ladder rung 13. The two opposite sections 28 of the two profile halves 22, 23 form on the inside a flat-oval shaped receptacle 24 for the in outline also flat oval arcuate tubular strut 14, which is in cross section in FIG. 5 can recognize. In the areas 31 and 32, respectively, which bound these two receptacles 25 and 24 on the inside and in the two receptacles on the outside bounding sections 30 and 29, both profile halves 22, 23 abut each other in the clamping position. These sections 30, 31, 32, 29 thus form, as it were, the abutments on which the two opposite profile halves 22, 23 are supported. Both profile halves are predominantly symmetrical with respect to a longitudinal plane through the clamping device, with the exception of the one end in the area 29. There, the two profile halves 22, 23 slightly different shaped and thereby have projections 38, 39 which are shaped so that both profile halves mesh in the region of these projections. The one of the two projections 39 on the one profile half 22 is approximately cylindrical or circular in side view and the other of the two projections 38 of the other profile half 23 is annular in side view, wherein the interior is shaped so that it forms the other Anformung 39 receives positively. The Anformung 38 thus overlaps the Anformung 39 of the other profile half 22, so that on this side of the clamping device 20, a joint is formed. This ensures that when moving the operating lever 21 in the clamping position, the two profile halves 22, 23 on the one side where the projections 38, 39 are held together, while the opening of the clamping device in the in FIG. 4 shown position, the two profile halves 22, 23 together on the side of the projections and so when opening quasi a pivoting movement about a formed by the projections 38, 39 joint, the two profile halves 22, 23 when opening or closing the clamp of course only pivot by a small angular range.

Der Betätigungshebel 21 hat einen Exzenterkopf 33, wie man aus Figur 5 erkennen kann. Der Betätigungshebel 21 ist also an der einen der beiden Profilhälften 22 exzentrisch und schwenkbar gelagert. Der Exzenterkopf 33 ist gelenkig verbunden mit dem einen Ende 37 eines Bolzens 34. Es kann auch eine Schraube stattdessen verwendet werden. Der Bolzen 34 hat dann beispielsweise einen Kopf 35 oder es wird eine Schraube mit Schraubenkopf oder Mutter verwendet. Die Mutter 35 hat dabei den Bereich 36 im mittleren Abschnitt der zweiten Profilhälfte 23 als Widerlager. Wird nun der Betätigungshebel 21 mit dem Exzenterkopf 33 in Pfeilrichtung in Figur 5 in die senkrechte, d. h., etwa parallel zur Profilhälfte 22 ausgerichtete Klemmposition geschwenkt, dann wird auf den Bolzen 34 eine Zugkraft ausgeübt, wodurch die beiden Profilhälften 22, 23 gegeneinander gepresst werden. Dadurch wird die Aufnahme 25 für die Leitersprosse 13 und die Aufnahme 24 für die bogenförmige Strebe 14 geschlossen. Auf die bogenförmige Strebe 14 wird eine Klemmkraft ausgeübt, so dass diese in der Aufnahme 24 nicht mehr in Richtung der Zeichenebene gemäß Figur 5 verschiebbar ist. Zu beachten ist, dass die beiden Profilhälften 22, 23 im Bereich der Aufnahme 25 auch in der gelösten Position der Klemmvorrichtung mit der Leitersprosse 13 verbunden sind, damit bei einem Verschieben der rohrförmigen Strebe 14 in der gelösten Position die beiden Profilhälften mit der Klemmvorrichtung sich nicht mitverschieben können, sondern an der unteren Leitersprosse 13 festgehalten werden.The actuating lever 21 has an eccentric head 33, as can be seen from FIG. 5 can recognize. The actuating lever 21 is thus eccentrically and pivotally mounted on one of the two profile halves 22. The eccentric head 33 is pivotally connected to the one end 37 of a Bolzens 34. It can also be used a screw instead. The bolt 34 then has, for example, a head 35 or a screw with a screw head or nut is used. The nut 35 has the region 36 in the middle section of the second profile half 23 as an abutment. Now, the actuating lever 21 with the eccentric head 33 in the direction of arrow in FIG. 5 in the vertical, ie, pivoted approximately parallel to the profile half 22 aligned clamping position, then a tensile force is exerted on the bolt 34, whereby the two profile halves 22, 23 are pressed against each other. As a result, the receptacle 25 for the ladder rung 13 and the receptacle 24 for the arcuate strut 14 are closed. On the arcuate strut 14, a clamping force is exerted, so that they no longer in the receptacle 24 in the direction of the plane according to FIG. 5 is displaceable. It should be noted that the two profile halves 22, 23 are connected in the region of the receptacle 25 in the released position of the clamping device with the ladder rung 13 so that when moving the tubular strut 14 in the released position, the two profile halves with the clamping device not can move with, but are held on the lower rung 13.

Die Exzentrizität ergibt sich dadurch, dass der Auflagebereich des Exzenterkopfs 33 von der Schwenkachse des Betätigungshebels 21 in der in Figur 5 dargestellten Klemmposition einen etwas größeren Abstand hat als der Auflagebereich, der sich bei Schwenken des Betätigungshebels 21 um 90° in die gelöste Position ergibt. Dabei bewegt sich der Betätigungshebel 21 mit dem Exzenterkopf 33 beim Schließen der Klemmvorrichtung über einen Totpunkt. Die Mutter 35 auf der gegenüberliegenden Seite der beiden Profilhälften 22, 23 liegt wie man aus Figur 5 erkennt, nicht direkt auf der Profilhälfte 23 auf, sondern auf einem zwischengeschaltetem etwas elastischen Ringelement 38, um das Schwenken beim Schließen der Klemmvorrichtung über den Totpunkt hinaus zu erleichtern. Durch den Totpunkt ist außerdem sichergestellt, dass der Betätigungshebel 21 in der in Figur dargestellten geschlossenen Position verbleibt. Durch die mittig in einem Raum zwischen den beiden Profilhälften 22, 23 angeordnete Druckfeder 40, die sich um den Schaft des Bolzens 34 legt, kann außerdem erreicht werden, dass in der gelösten Stellung des Betätigungshebels 21 die beiden Profilhälften etwas auseinandergedrückt werden, so dass man dann die rohrförmige Strebe 14 verschieben kann.The eccentricity results from the fact that the contact area of the eccentric head 33 from the pivot axis of the actuating lever 21 in the in FIG. 5 shown clamping position has a slightly greater distance than the support area, which results in pivoting of the actuating lever 21 by 90 ° in the released position. In this case, the actuating lever 21 moves with the eccentric head 33 when closing the clamping device via a dead center. The nut 35 on the opposite side of the two profile halves 22, 23 is as you look FIG. 5 detects, not directly on the profile half 23, but on an intermediate slightly elastic ring member 38 to facilitate pivoting when closing the clamping device beyond the dead center addition. By the dead center is also ensured that the actuating lever 21 remains in the closed position shown in FIG. By the centrally disposed in a space between the two profile halves 22, 23 compression spring 40, which lies around the shaft of the bolt 34, can also be achieved that in the released position the actuating lever 21, the two profile halves are pressed apart slightly so that you can then move the tubular strut 14.

Ein wesentlicher Vorteil der erfindungsgemäßen Klemmvorrichtung liegt darin, dass die Klemmkraft auf die bogenförmige Strebe 14 durch Reibschluss in der Aufnahme 24 ringsum erzeugt wird, aber beim Anziehen der Klemmvorrichtung keine Kraftkomponente entsteht, die die rohrförmige Strebe 14 gegen die Leitersprosse 13 bewegt, da eine solche Verlagerung der rohrförmigen Strebe 14 auf die Leitersprosse 13 zu zu einer Verformung der Strebe 14 oder Erzeugung eines Spiels in ihrer Lagerung führt, was problematisch ist.A significant advantage of the clamping device according to the invention is that the clamping force is generated on the arcuate strut 14 by frictional engagement in the receptacle 24 around, but when tightening the clamping device no force component is created, which moves the tubular strut 14 against the ladder rung 13, as such Displacement of the tubular strut 14 on the ladder rung 13 leads to a deformation of the strut 14 or creating a game in their storage, which is problematic.

Claims (8)

  1. Ladder (10) comprising two parallel stringers (11, 12), rungs (13) running in the transverse direction between these two stringers (11, 12), and a lower stand part (14, 15, 16), which is wider in the transverse direction, wherein
    - the stand part (14, 15, 16) has two stand feet (15, 16) at the ends and an arc-shaped strut (14),
    - the stand feet are suitable and set up to form the resting points for the stand part (14, 15, 16) on a ground surface,
    - a levelling device is provided, insofar as the two resting points on the ground surface lie at different heights,
    - the arc-shaped strut (14) is provided for the levelling device,
    - the strut (14) is displaceable relative to the ladder stringers (11, 12) along the line of an arc,
    - a clamping apparatus (20) is attached to the bottommost rung (13) lying adjacent to the arc-shaped strut (14),
    - the strut (14) can be secured in a chosen position by means of the clamping apparatus (20),
    characterized in that
    - the clamping apparatus (20) is configured such that the clamping force acts upon the strut (14) substantially from the side, i.e. when the ladder (10) is set up, substantially horizontally or against the periphery.
    - the clamping apparatus (20) is configured in two parts, having two similarly shaped halves (22, 23) which can be pressed together upon the actuation of an actuating element and which form a receiving fixture (24) for the arc-shaped strut (14), in the released position of the clamping apparatus the arc-shaped strut being freely displaceable with this receiving fixture and the strut being secured in the clamping setting by clamping force,
    - the actuating element is an actuating lever (21),
    - a clamping mechanism of the clamping apparatus (20) comprises an eccentric element which can be actuated by means of the actuating lever (21).
  2. Ladder according to Claim 1, characterized in that the clamping apparatus (20) has an upper receiving fixture (25), which surrounds the bottommost rung (13), in a positive-locking manner, for example, and which is secured thereto and, even in the released setting of the clamping apparatus, is non-displaceable along the rung.
  3. Ladder according to one of Claims 1 or 2, characterized in that the clamping apparatus comprises two roughly similarly shaped extruded profile halves (22, 23).
  4. Ladder according to one of Claims 1 to 3, characterized in that the upper receiving fixture (25) is a receiving fixture, formed in total from the two profile halves and shaped roughly rectangularly in cross section, for a lower rung (13) of roughly rectangular contour.
  5. Ladder according to one of Claims 1 to 4, characterized in that the lower receiving fixture (24) formed from the two profile halves (22, 23) is in total flatly oval, oval or round in cross section for a strut (14) of correspondingly shaped contour.
  6. Ladder according to one of Claims 1 to 5, characterized in that the actuating lever (21) can be pivoted out of the clamping position substantially through 90° into the released setting of the clamping apparatus.
  7. Ladder according to one of Claims 1 to 6, characterized in that the actuating lever (21), in the released position, is disposed roughly horizontally.
  8. Ladder according to one of Claims 1 to 7, characterized in that the actuating lever (21) has an eccentric head (33), which is articulately connected to one end of a traction element (34), the other end of the traction element finding a counter bearing on the away-facing half (23) of the clamping apparatus, so that when the actuating lever (21) is moved into the clamping position, one half (22) of the clamping apparatus is pressed against the other half (23).
EP01128781A 2001-02-09 2001-12-04 Ladder with a level-compensating device Expired - Lifetime EP1231356B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10106448 2001-02-09
DE10106448 2001-02-09
DE10109947 2001-03-01
DE10109947A DE10109947A1 (en) 2001-02-09 2001-03-01 Head with a level balance

Publications (3)

Publication Number Publication Date
EP1231356A2 EP1231356A2 (en) 2002-08-14
EP1231356A3 EP1231356A3 (en) 2003-01-15
EP1231356B1 true EP1231356B1 (en) 2008-03-05

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ID=26008478

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Application Number Title Priority Date Filing Date
EP01128781A Expired - Lifetime EP1231356B1 (en) 2001-02-09 2001-12-04 Ladder with a level-compensating device

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EP (1) EP1231356B1 (en)
AT (1) ATE388299T1 (en)
DE (1) DE50113693D1 (en)
DK (1) DK1231356T3 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008015903U1 (en) 2008-12-02 2009-02-19 Hailo-Werk Rudolf Loh Gmbh & Co. Kg Rollers for a ladder and arrangement of a rung ladder and such rolls
DE202012100751U1 (en) 2012-03-02 2013-06-04 Hailo-Werk Rudolf Loh Gmbh & Co. Kg Ladder and ladder base with swiveling and movable earth tip
EP3128116A1 (en) 2015-08-07 2017-02-08 Hymer-Leichtmetallbau GmbH & Co. KG Ladder base for ladders, scaffolds, working platforms and the like

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8162273B2 (en) 2007-06-15 2012-04-24 Ronald Paul Jones Adjustable support structure
CN108266116B (en) * 2014-01-23 2020-04-10 比格福特兰德系统有限公司 Ladder balancing and stabilizing assembly

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Publication number Priority date Publication date Assignee Title
US2320144A (en) * 1942-10-06 1943-05-25 Johnson Eric Auxiliary ladder leg
GB643565A (en) * 1947-12-02 1950-09-20 Bernhard Volkery Clamps
US3173512A (en) * 1962-06-12 1965-03-16 Sturdy Leonard Frederick Ladder levelling device
FR2621952B1 (en) * 1987-10-14 1990-12-14 Fameca Sa LEVEL COMPENSATOR FOR LADDER
DE9002445U1 (en) * 1990-03-02 1991-03-28 Hymer-Leichtmetallbau, 7988 Wangen, De
GB9407259D0 (en) * 1994-04-13 1994-06-08 Jani Jack Ltd Clamps
DE19732542A1 (en) * 1997-07-29 1999-02-18 Loh Kg Hailo Werk Single ladder

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008015903U1 (en) 2008-12-02 2009-02-19 Hailo-Werk Rudolf Loh Gmbh & Co. Kg Rollers for a ladder and arrangement of a rung ladder and such rolls
EP2194225A2 (en) 2008-12-02 2010-06-09 Hailo-Werk Rudolf Loh GmbH & Co. KG Roller for a ladder and assembly of a rung ladder and such roller
EP2194225A3 (en) * 2008-12-02 2012-04-18 Hailo-Werk Rudolf Loh GmbH & Co. KG Roller for a ladder and assembly of a rung ladder and such roller
DE202012100751U1 (en) 2012-03-02 2013-06-04 Hailo-Werk Rudolf Loh Gmbh & Co. Kg Ladder and ladder base with swiveling and movable earth tip
EP3128116A1 (en) 2015-08-07 2017-02-08 Hymer-Leichtmetallbau GmbH & Co. KG Ladder base for ladders, scaffolds, working platforms and the like
DE102015010255A1 (en) 2015-08-07 2017-02-09 Hymer-Leichtmetallbau Gmbh & Co. Kg Ladder foot for ladders, scaffolding, work platforms and the like

Also Published As

Publication number Publication date
EP1231356A3 (en) 2003-01-15
DE50113693D1 (en) 2008-04-17
DK1231356T3 (en) 2008-06-30
ATE388299T1 (en) 2008-03-15
EP1231356A2 (en) 2002-08-14

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