EP0384954A1 - Joint protection for ladders - Google Patents

Joint protection for ladders Download PDF

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Publication number
EP0384954A1
EP0384954A1 EP89114648A EP89114648A EP0384954A1 EP 0384954 A1 EP0384954 A1 EP 0384954A1 EP 89114648 A EP89114648 A EP 89114648A EP 89114648 A EP89114648 A EP 89114648A EP 0384954 A1 EP0384954 A1 EP 0384954A1
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EP
European Patent Office
Prior art keywords
joint
piece
protection according
joint protection
cover
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.)
Granted
Application number
EP89114648A
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German (de)
French (fr)
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EP0384954B1 (en
Inventor
Christian Gross
Christoph Petri
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
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Hailo Werk Rudolf Loh GmbH and Co KG
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.)
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Publication date
Application filed by Hailo Werk Rudolf Loh GmbH and Co KG filed Critical Hailo Werk Rudolf Loh GmbH and Co KG
Priority to AT89114648T priority Critical patent/ATE70887T1/en
Publication of EP0384954A1 publication Critical patent/EP0384954A1/en
Application granted granted Critical
Publication of EP0384954B1 publication Critical patent/EP0384954B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • E06C1/39—Ladders having platforms; Ladders changeable into platforms
    • E06C1/393—Ladders having platforms foldable with the ladder

Definitions

  • the invention relates to a joint protection for step or step ladders with support legs and cheeks or bars.
  • Such ladders regularly have two joints, which are arranged in the upper region of the ladder. Since these joints are usually freely accessible, they can also be contaminated, which can lead to wear on the joints. There is also a risk that the user can get his fingers into the interior of the joint, which can lead to injuries.
  • the invention has for its object to develop the step or step ladder so that their joints are adequately protected.
  • a cover piece which surrounds the joint and can be connected to the cheek or the one spar, and to which a sleeve section which can be connected to the cover piece and which connects the end piece of the support leg which faces the joint is connected or other Holmes at least partially covers.
  • the invention is implemented in any case if each joint of the conductor in question is surrounded by a protective joint which can follow the movements of the actual joint. So that's the real thing Joint of the conductor is no longer easily accessible from the outside, so that no contaminants can get into the joint. It is also excluded that the user unexpectedly sticks his fingers in the inner region of the joint and thus jams.
  • a particularly advantageous embodiment provides that the axial length of the sleeve section can be changed. It is expedient here if the sleeve section is designed as a bellows which surrounds the end piece without a gap.
  • the advantage of a bellows-like sleeve section is that such parts can easily follow the joint movements and without major wear.
  • a further expedient embodiment of the invention provides that the outside of the sleeve section has transverse grooves running transversely to the end piece and at a distance from one another. If the ends of the circumferential grooves formed in the region of the joint are directed towards the cover piece, then the deformation of the joint protection takes place in the region of the joint without major material stress. These measures can only be taken so that the joint between the cover and the outside of the sleeve section is formed by an arcuate groove, the radius of curvature of which corresponds to the distance of the groove from the joint axis of the conductor joint. This groove and the grooves running into this groove form an artificial weak point in the joint protection, as a result of which the joint protection can be deformed in a targeted manner in the region of the joint.
  • the cover piece consists of two the joint on the outside surrounding legs, between which is arranged a tongue-shaped continuation of the sleeve section, which covers the slot.
  • a particularly expedient embodiment of the invention provides that the joint protection is formed in one piece and consists of two components.
  • the stepladder 12 has two joints 30, each of which is covered with a joint protection 10.
  • the joint protection 10 has a cover piece 40 which surrounds the joint 30 and which can be fixedly connected to the cheek 16, to which is connected a sleeve section 42 which can be connected in an articulated manner to the cover piece 40 and which at least partially covers the end piece of the support leg 20 facing the joint 30.
  • the axial length of the sleeve section 42 can be changed.
  • the sleeve section 42 could generally be designed as a bellows which surrounds the end piece without a gap.
  • the sleeve section 42 is provided with circumferential grooves 50 to 57 which run transversely to the end piece and at a distance from one another.
  • the ends of the circumferential grooves 51, 52 and 53 formed in the region of the joint 30 are directed towards the cover piece 40.
  • the joint 60 between the cover 40 and the outside of the sleeve section 42 is formed by an arcuate groove 60, the radius of curvature of which corresponds to the distance of the groove from the joint axis of the conductor joint 30.
  • the cover 40 has a central bore 80 which can be covered by a cap. 5, the bore 82 is laterally offset.
  • the protection shown in the figures is particularly suitable for a step ladder, in which a slot is formed in the narrow sides of the cheeks 14 and 16, into which the upper end of the respective support leg engages to form a joint.
  • the cover 40 consists of two the joint 30 on the outside surrounding legs 70 and 72, between which a continuation in the form of a tongue 74 of the sleeve section 42 is arranged, which covers the slot.
  • the cover 40 is circular in plan view and curved outwards, so that it can be slipped onto the hinge pin of the hinge 30, not shown, and can be snapped on. 3 has a radial groove 7 so that the diameter of the recess 80 can be increased.
  • the joint protection consisting of two different plastics, appears to the user as the actual joint, which enables a gap-free and slot-free connection between the cheeks and the support legs assigned to them. Impurities cannot get into the joint because it is covered on all sides.
  • the plastics are selected so that at least the sleeve section 42 consists of elastic plastic, so that this can follow the pivoting movement of the support leg 20 or other spars by deformation.

Abstract

The invention relates to a joint protection (10) for stepladders having support legs (20) and side-pieces (14) or longitudinal members. It possesses a cover piece (40) which surrounds the joint and can be connected fixedly or in an articulated fashion to the side-piece (14) or to the one longitudinal member, adjoining which piece (40) is a sleeve section (42) which is connected in an articulated fashion or fixedly to the cover piece (40) and at least partially covers that end piece of the support leg (20) or other longitudinal member which faces the joint (30). <IMAGE>

Description

Die Erfindung betrifft einen Gelenkschutz für Stufen- oder Stehleitern mit Stützschenkeln und Wangen bzw. Holmen.The invention relates to a joint protection for step or step ladders with support legs and cheeks or bars.

Solche Leitern besitzen regelmäßig zwei Gelenke, die im oberen Bereich der Leiter angeordnet sind. Da diese Gelenke gewöhnlich frei zugänglich sind, können in sie auch Verunreinigungen gelangen, die zum Verschleiß der Gelenke führen können. Ferner besteht auch die Gefahr, daß der Benutzer mit seinen Fingern in den Innenbereich des Gelenkes gelangt, was zu Verletzungen führen kann.Such ladders regularly have two joints, which are arranged in the upper region of the ladder. Since these joints are usually freely accessible, they can also be contaminated, which can lead to wear on the joints. There is also a risk that the user can get his fingers into the interior of the joint, which can lead to injuries.

Ausgehend von dem obigen Stand der Technik liegt der Erfindung die Aufgabe zugrunde, die Stufen- oder Stehleitern so weiterzubilden, daß deren Gelenke hinreichend geschützt sind.Starting from the above prior art, the invention has for its object to develop the step or step ladder so that their joints are adequately protected.

Die gestellte Aufgabe wird erfindungsgemäß durch ein das Gelenk umgebendes und mit der Wange bzw. dem einen Holm fest bzw. gelenkig verbindbares Abdeckstück gelöst, an das sich ein mit dem Abdeckstück gelenkig bzw. fest verbindbarer Ärmelabschnitt anschließt, der das dem Gelenk zugekehrte Endstück des Stützschenkels bzw. anderen Holmes zumindest teilweise abdeckt.The object is achieved according to the invention by a cover piece which surrounds the joint and can be connected to the cheek or the one spar, and to which a sleeve section which can be connected to the cover piece and which connects the end piece of the support leg which faces the joint is connected or other Holmes at least partially covers.

Man erkennt, daß die Erfindung jedenfalls dann verwirklicht ist, wenn jedes Gelenk der hier in Betracht kommenden Leiter von einem Schutzgelenk umgeben ist, das den Bewegungen des eigentlichen Gelenkes folgen kann. Somit ist das eigentliche Gelenk der Leiter von außen nicht mehr ohne weiteres zugänglich, so daß auch keine Verunreinigungen in das Gelenk gelangen können. Es ist auch ausgeschlossen, daß der Benutzer seine Finger unverhofft in den Innenbereich des Gelenkes steckt und somit einklemmt.It can be seen that the invention is implemented in any case if each joint of the conductor in question is surrounded by a protective joint which can follow the movements of the actual joint. So that's the real thing Joint of the conductor is no longer easily accessible from the outside, so that no contaminants can get into the joint. It is also excluded that the user unexpectedly sticks his fingers in the inner region of the joint and thus jams.

Weitere zweckmäßige und vorteilhafte Ausgestaltungen der Erfindung gehen aus den Unteransprüchen hervor.Further expedient and advantageous refinements of the invention emerge from the subclaims.

Eine besonders vorteilhafte Ausgestaltung sieht vor, daß die Axiallänge des Ärmelabschnittes veränderbar ist. Hierbei ist es zweckmäßig, wenn der Ämrelabschnitt als ein Faltbalg ausgebildet ist, der das Endstück abstandsfrei umgibt. Der Vorteil eines faltbalgartigen Ärmelabschnittes besteht darin, daß solche Teile den Gelenkbewegungen problemlos und ohne größere Abnutzung folgen können.A particularly advantageous embodiment provides that the axial length of the sleeve section can be changed. It is expedient here if the sleeve section is designed as a bellows which surrounds the end piece without a gap. The advantage of a bellows-like sleeve section is that such parts can easily follow the joint movements and without major wear.

Eine weitere zweckmäßige Ausgestaltung der Erfindung sieht vor, daß die Außenseite des Ärmelabschnittes quer zu dem Endstück und mit Abstand zueinander laufende Umfangsnuten besitzt. Sind hierbei die Enden der im Bereich des Gelenkes ausgebildeten Umfangsnuten auf das Abdeckstück gerichtet, dann erfolgt ist die Verformung des Gelenkschutzes im Bereich des Gelenkes ohne größere Materialbeanspruchung. Hierbei können diese Maßnahmen nur so getroffen sein, daß die Stoßstelle zwischen dem Abdeckstück und der Außenseite des Ärmelabschnittes durch eine bogenförmige Nut gebildet ist, deren Krümmungsradius dem Abstand der Nut von der Gelenkachse des Leitergelenkes entspricht. Durch diese Nut und die in diese Nut auslaufenden Nuten wird eine künstliche Schwachstelle des Gelenkschutzes gebildet, wodurch eine gezielte Verformung des Gelenkschutzes im Bereich des Gelenkes erfolgen kann.A further expedient embodiment of the invention provides that the outside of the sleeve section has transverse grooves running transversely to the end piece and at a distance from one another. If the ends of the circumferential grooves formed in the region of the joint are directed towards the cover piece, then the deformation of the joint protection takes place in the region of the joint without major material stress. These measures can only be taken so that the joint between the cover and the outside of the sleeve section is formed by an arcuate groove, the radius of curvature of which corresponds to the distance of the groove from the joint axis of the conductor joint. This groove and the grooves running into this groove form an artificial weak point in the joint protection, as a result of which the joint protection can be deformed in a targeted manner in the region of the joint.

Handelt es sich um einen Gelenkschutz für eine Stufenleiter, bei der in den Schmalseiten der Wangen jeweils ein Schlitz ausgebildet ist, in den das obere Ende des jeweiligen Stützschenkels unter Bildung eines Gelenkes eingreift, dann ist es zweckmäßig, wenn das Abdeckstück aus zwei das Gelenk außenseitig umgebenden Schenkeln besteht, zwischen denen eine in Form einer Zunge ausgebildete Fortsetzung des Ärmelabschnittes angeordnet ist, die den Schlitz abdeckt.If it is a joint protection for a step ladder, in which a slot is formed in the narrow sides of the cheeks, into which the upper end of the respective support leg engages to form a joint, then it is expedient if the cover piece consists of two the joint on the outside surrounding legs, between which is arranged a tongue-shaped continuation of the sleeve section, which covers the slot.

Schließlich sieht eine besonders zweckmäßige Ausgestaltung der Erfindung vor, daß der Gelenkschutz einstückig ausgebildet ist und aus zwei Komponenten besteht.Finally, a particularly expedient embodiment of the invention provides that the joint protection is formed in one piece and consists of two components.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung schematisch dargestellt und wird im folgenden näher erläutert. Es zeigen

  • Fig. 1 ein Gelenk einer Stufen-Stehleiter in perspektivischer Seitenansicht,
  • Fig. 2 einen Gelenkschutz in Seitenansicht,
  • Fig. 3 ein Abdeckstück eines Gelenkschutzes,
  • Fig. 4 den in Fig. 2 dargestellten Gelenkschutz in Richtung des Pfeiles IV,
  • Fig. 5 einen Schnitt entlang der Linie V-V nach Fig. 4,
  • Fig. 6 einen Schnitt entlang der Linie VI-VI nach Fig. 5,
  • Fig. 7 einen Schnitt durch einen Schenkel des Abdeckschutzes vergrößert dargestellt.
An embodiment of the invention is shown schematically in the drawing and is explained in more detail below. Show it
  • 1 a joint of a step ladder in perspective side view,
  • 2 a joint protection in side view,
  • 3 shows a cover piece of a joint protection,
  • 4 shows the joint protection shown in FIG. 2 in the direction of arrow IV,
  • 5 shows a section along the line VV of FIG. 4,
  • 6 shows a section along the line VI-VI of FIG. 5,
  • Fig. 7 shows a section through one leg of the cover protection enlarged.

In den Figuren ist ein Gelenkschutz 10 für eine Stufenstehleiter mit Stützschenkeln 20 sowie Wangen 14 und 16 dargetellt (vgl. Fig. 1). Die Stufenstehleiter 12 besitzt zwei Gelenke 30, die mit jeweils einem Gelenkschutz 10 abgedeckt sind. Der Gelenkschutz 10 besitzt ein das Gelenk 30 umgebendes und mit der Wange 16 fest verbindbares Abdeckstück 40, an das sich ein mit dem Abdeckstück 40 gelenkig verbindbarer Ärmelabschnitt 42 anschließt, der das dem Gelenk 30 zugekehrte Endstück des Stützschenkels 20 zumindest teilweise abdeckt. Die Axiallänge des Ärmelabschnittes 42 ist veränderbar. Der Ärmelabschnitt 42 könnte allgemein als ein Faltbalg ausgebildet sein, der das Endstück abstandsfrei umgibt. Im vorliegenden Ausführungsbeispiel ist der Ärmelabschnitt 42 mit quer zu den Endstück und mit Abstand zueinander verlaufenden Umfangsnuten 50 bis 57 versehen. Die Enden der im Bereich des Gelenkes 30 ausgebildeten Umfangsnuten 51, 52 und 53 sind auf das Abdeckstück 40 gerichtet.An articulated protection 10 for a step ladder with support legs 20 and cheeks 14 and 16 is shown in the figures (cf. FIG. 1). The stepladder 12 has two joints 30, each of which is covered with a joint protection 10. The joint protection 10 has a cover piece 40 which surrounds the joint 30 and which can be fixedly connected to the cheek 16, to which is connected a sleeve section 42 which can be connected in an articulated manner to the cover piece 40 and which at least partially covers the end piece of the support leg 20 facing the joint 30. The axial length of the sleeve section 42 can be changed. The sleeve section 42 could generally be designed as a bellows which surrounds the end piece without a gap. In the present exemplary embodiment, the sleeve section 42 is provided with circumferential grooves 50 to 57 which run transversely to the end piece and at a distance from one another. The ends of the circumferential grooves 51, 52 and 53 formed in the region of the joint 30 are directed towards the cover piece 40.

Insbesondere Fig. 2 läßt erkennen, daß die Stoßstelle 60 zwischen dem Abdeckstück 40 und der Außenseite des Ärmelabschnittes 42 durch eine bogenförmige Nut 60 gebildet ist, deren Krümmungsradius dem Abstand der Nut von der Gelenkachse des Leitergelenkes 30 entspricht.2 shows in particular that the joint 60 between the cover 40 and the outside of the sleeve section 42 is formed by an arcuate groove 60, the radius of curvature of which corresponds to the distance of the groove from the joint axis of the conductor joint 30.

In Fig.3 besitzt ds Abdeckstück 40 eine mittige Bohrung 80, die durch eine Kappe abgedeckt werden kann. In Fig. 5 ist die Bohrung 82 seitlich versetzt. Der in den Fig. dargestellte Schutz eignet sich besonders für eine Stufenleiter, bei der in den Schmalseiten der Wangen 14 und 16 jeweils ein Schlitz ausgebildet ist, in den das obere Ende des jeweiligen Stützschenkels unter Bildung eines Gelenkes eingreift. Das Abdeckstück 40 besteht aus zwei das Gelenk 30 außenseitig umgebenden Schenkeln 70 und 72, zwischen denen ein in Form einer Zunge 74 ausgebildete Fortsetzung des Ärmelabschnittes 42 angeordnet ist, die den Schlitz abdeckt.In Figure 3, the cover 40 has a central bore 80 which can be covered by a cap. 5, the bore 82 is laterally offset. The protection shown in the figures is particularly suitable for a step ladder, in which a slot is formed in the narrow sides of the cheeks 14 and 16, into which the upper end of the respective support leg engages to form a joint. The cover 40 consists of two the joint 30 on the outside surrounding legs 70 and 72, between which a continuation in the form of a tongue 74 of the sleeve section 42 is arranged, which covers the slot.

Man erkennt, daß das Abdeckstück 40 in Draufsicht kreisrund und nach außen gewölbt ist, so daß es auf den nicht dargestellten Gelenkbolzen des Gelenkes 30 aufgestülpt und hierbei aufgerastet werden kann. Um das Aufstülpen zu erleichtern, besitzt das Abdeckstück 40 nach Fig. 3 eine Radialnut 7 so daß der Durchmesser der Ausnehmung 80 vergrößert werden kann.It can be seen that the cover 40 is circular in plan view and curved outwards, so that it can be slipped onto the hinge pin of the hinge 30, not shown, and can be snapped on. 3 has a radial groove 7 so that the diameter of the recess 80 can be increased.

Der aus zwei unterschiedlichen Kunststoffen bestehende Gelenkschutz erscheint für den Benutzer als das eigentliche Gelenk, das eine spalt- und schlitzfreie Verbindung zwischen den Wangen und den ihnen zugeordneten Stützschenkeln ermöglicht. Verunreinigungen können in das Gelenk nicht gelangen, da es allseitig bedeckt ist. Die Kunststoffe sind so gewählt, daß zumindest der Ärmelabschnitt 42 aus elastischem Kunststoff besteht, so daß dieses der Schwenkbewegung des Stützschenkels 20 bzw. anderen Holmes durch Verformung folgen kann.The joint protection, consisting of two different plastics, appears to the user as the actual joint, which enables a gap-free and slot-free connection between the cheeks and the support legs assigned to them. Impurities cannot get into the joint because it is covered on all sides. The plastics are selected so that at least the sleeve section 42 consists of elastic plastic, so that this can follow the pivoting movement of the support leg 20 or other spars by deformation.

Claims (8)

1. Gelenkschutz für Stufen- oder Stehleitern mit Stützschenkeln und Wangen bzw. Holmen,
gekennzeichnet durch
ein das Gelenk (30) umgebendes und mit der Wange (16) bzw. dem einen Holm fest bzw. gelenkig verbindbares Abdeckstück (40), an das sich ein mit dem Abdeckstück (40) gelenkig bzw. fest verbundener Ärmelabschnitt (42) anschließt, der das dem Gelenk (30) zugekehrte Endstück des Stützschenkels (20) bzw. anderen Holmes zumindest teilweise abdeckt.1. joint protection for step or step ladders with support legs and cheeks or bars,
marked by
a cover piece (40) surrounding the joint (30) and connectable to the cheek (16) or the one spar, to which a sleeve section (42) connected in an articulated or fixed manner to the cover piece (40) is connected, which at least partially covers the end piece of the support leg (20) or other spars facing the joint (30). 2. Gelenkschutz nach Anspruch 1,
dadurch gekennzeichnet,
daß die axiale Länge des Ärmelabschnittes (42) veränderbar ist.2. joint protection according to claim 1,
characterized,
that the axial length of the sleeve portion (42) is variable. 3. Gelenkschutz nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß der Ärmelabschnitt (42) als ein Faltbalg ausgebildet ist, der das Endstück des Stützschenkels (20) bzw. anderen Holmes abstandsfrei umgibt.3. joint protection according to claim 1 or 2,
characterized,
that the sleeve portion (42) is designed as a bellows, which surrounds the end piece of the support leg (20) or other spars without a gap. 4. Gelenkschutz nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß die Außenseite des Ärmelabschnittes (42) quer zu dem Endstück des Stützschenkels (20) bzw. anderen Holmes und mit Abstand zueinander verlaufende Umfangsnuten (50,55) besitzt.4. joint protection according to claim 1 or 2,
characterized,
that the outside of the sleeve portion (42) transversely to the end piece of the support leg (20) or other Holmes and spaced circumferential grooves (50,55). 5. Gelenkschutz nach Anspruch 4,
dadurch gekennzeichnet,
daß die Enden der im Bereich des Gelenkes (30) ausgebildeten Umfangsnuten (51,52,53) auf das Abdeckstück (40) gerichtet sind.5. joint protection according to claim 4,
characterized,
that the ends of the circumferential grooves (51, 52, 53) formed in the region of the joint (30) are directed towards the cover piece (40). 6. Gelenkschutz nach Anspruch 5,
dadurch gekennzeichnet,
daß die Stoßstelle (60) zwischen dem Abdeckstück (40) und der Außenseite des Ärmelabschnittes (42) durch eine bogenförmige Nut (60) gebildet ist, deren Krümmungsradius dem Abstand der Nut (60) von der Gelenkachse des Leitergelenkes (30) entspricht.6. joint protection according to claim 5,
characterized,
that the joint (60) between the cover (40) and the outside of the sleeve portion (42) is formed by an arcuate groove (60) whose radius of curvature corresponds to the distance of the groove (60) from the hinge axis of the conductor joint (30). 7. Gelenkschutz nach einem der Ansprüche 1 bis 6 für eine Stufenleiter, bei der in den Schmalseiten der Wangen jeweils ein Schlitz ausgebildet ist, in den das obere Ende des jeweiligen Stützschenkels unter Bildung eines Gelenkes eingreift,
dadurch gekennzeichnet,
daß das Abdeckstück (40) aus zwei das Gelenk (30) außenseitig umgebenden Schenkeln (70,72) besteht, zwischen denen eine in Form einer Zunge ausgebildete Fortsetzung (74) des Ärmelabschnittes (42) angeordnet ist, die den Schlitz abdeckt.7. Joint protection according to one of claims 1 to 6 for a step ladder, in which a slot is formed in the narrow sides of the cheeks, into which the upper end of the respective support leg engages to form a joint,
characterized,
that the cover (40) consists of two legs (70, 72) surrounding the joint (30) on the outside, between which is arranged a tongue-shaped extension (74) of the sleeve section (42) which covers the slot. 8. Gelenkschutz nach einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet,
daß er einstückig ausgebildet ist und aus zwei unterschiedlichen Kunststoffen besteht, wobei der Ärmelabschnitt (42) aus elastischem Kunststoff besteht.8. joint protection according to one of claims 1 to 7,
characterized,
that it is formed in one piece and consists of two different plastics, the sleeve portion (42) made of elastic plastic.
EP89114648A 1989-03-03 1989-08-08 Joint protection for ladders Expired - Lifetime EP0384954B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89114648T ATE70887T1 (en) 1989-03-03 1989-08-08 JOINT PROTECTION FOR LADDERS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3906805 1989-03-03
DE3906805A DE3906805A1 (en) 1989-03-03 1989-03-03 JOINT PROTECTION FOR LADDERS

Publications (2)

Publication Number Publication Date
EP0384954A1 true EP0384954A1 (en) 1990-09-05
EP0384954B1 EP0384954B1 (en) 1991-12-27

Family

ID=6375447

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89114648A Expired - Lifetime EP0384954B1 (en) 1989-03-03 1989-08-08 Joint protection for ladders

Country Status (5)

Country Link
EP (1) EP0384954B1 (en)
AT (1) ATE70887T1 (en)
DE (2) DE3906805A1 (en)
ES (1) ES2028423T3 (en)
GR (1) GR3003885T3 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4027741A (en) * 1976-07-15 1977-06-07 Shakespeare Company Locking hinge mechanism for a stepladder
DE3521067A1 (en) * 1984-06-18 1985-12-19 Aisin Seiki K.K., Kariya, Aichi Framework for a vehicle seat
DE8811247U1 (en) * 1988-09-06 1988-11-10 Hailo-Werk Rudolf Loh Gmbh & Co Kg, 6342 Haiger, De

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH192115A (en) * 1936-12-19 1937-07-31 Nauer Gottlieb Facility on stepladders.
DE1811172U (en) * 1960-03-15 1960-05-12 Eisenwerk Sauerland G M B H STEEL PIPE LADDER.
DE8208700U1 (en) * 1982-03-26 1982-08-12 Krause, Günther, 6320 Alsfeld FOLDABLE MULTIPURPOSE LADDER
DE8809515U1 (en) * 1988-07-26 1988-09-22 Hailo-Werk Rudolf Loh Gmbh & Co Kg, 6342 Haiger, De

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4027741A (en) * 1976-07-15 1977-06-07 Shakespeare Company Locking hinge mechanism for a stepladder
DE3521067A1 (en) * 1984-06-18 1985-12-19 Aisin Seiki K.K., Kariya, Aichi Framework for a vehicle seat
DE8811247U1 (en) * 1988-09-06 1988-11-10 Hailo-Werk Rudolf Loh Gmbh & Co Kg, 6342 Haiger, De

Also Published As

Publication number Publication date
DE58900639D1 (en) 1992-02-06
GR3003885T3 (en) 1993-03-16
ATE70887T1 (en) 1992-01-15
DE3906805A1 (en) 1990-09-13
ES2028423T3 (en) 1992-07-01
EP0384954B1 (en) 1991-12-27

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