EP0290034A2 - Ladder - Google Patents

Ladder Download PDF

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Publication number
EP0290034A2
EP0290034A2 EP88107313A EP88107313A EP0290034A2 EP 0290034 A2 EP0290034 A2 EP 0290034A2 EP 88107313 A EP88107313 A EP 88107313A EP 88107313 A EP88107313 A EP 88107313A EP 0290034 A2 EP0290034 A2 EP 0290034A2
Authority
EP
European Patent Office
Prior art keywords
central spar
section
central
ladder
vertical ladder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP88107313A
Other languages
German (de)
French (fr)
Other versions
EP0290034A3 (en
Inventor
Ernst Söll
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.)
Soell Industrieschmiede GmbH
Original Assignee
Soell Industrieschmiede GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Soell Industrieschmiede GmbH filed Critical Soell Industrieschmiede GmbH
Publication of EP0290034A2 publication Critical patent/EP0290034A2/en
Publication of EP0290034A3 publication Critical patent/EP0290034A3/en
Withdrawn legal-status Critical Current

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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
    • E06C1/381—Ladders with rungs or treads attached only to one rigid longitudinal member
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/18—Devices for preventing persons from falling
    • E06C7/186—Rail or rope for guiding a safety attachment, e.g. a fall arrest system
    • E06C7/187—Guiding rail
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C9/00—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes
    • E06C9/02—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes rigidly mounted

Definitions

  • the invention relates to a vertical ladder according to the preamble of claim 1.
  • Such a ladder is known from DE-A-1 961 757 and DE-A-2 123 629.
  • the opening of the C-shaped cross section points forward, ie towards the person climbing the ladder.
  • the rungs are led through openings in the side surfaces of the central spar.
  • the known vertical ladder is attached to a structure, for example concrete towers and steel or lattice masts, by means of holding brackets which are fastened to the central strut by means of screws which run parallel to the rungs and are guided through openings in the side faces of the central stringer.
  • the attachment can also be done by screws that are guided through openings in the closed rear of the central spar.
  • the central spar also serves as a guide rail for fall protection, as described in DE-A-1 961 757.
  • a distance of the holding bracket of not more than about 1.12 m is required in the known vertical ladders.
  • the rung spacing is 28 cm.
  • a distance between the retaining brackets of 1.12 m is optimal in economic terms.
  • An increase in the spacing of the holding brackets would require a reinforcement of the central spar, which would increase the total costs, which are made up of the production costs and the costs for the attachment to the structure.
  • the invention has for its object to improve the construction of the fixed ladder so that the total costs resulting from the manufacturing costs and the cost of attachment are reduced.
  • the distances between the holding brackets can be increased to 2.80 m without reinforcing the central spar.
  • the improved stability of the central spar results from the fact that the rungs increase its stability by being welded to the rear of the central spar.
  • the central spar has a similar stability to a closed box spar.
  • the weakening of the central spar caused by the openings provided for the rungs is eliminated in the known vertical ladders.
  • a rail for guiding the fall protection device can be attached to the closed front of the central strut. Despite the additional costs for this guide rail, the total costs are still lower than with the known fixed ladders.
  • the fixed ladder is expediently made of hot-dip galvanized steel.
  • the vertical ladder has a central strut 1 which has a profile with a C-shaped cross section.
  • the width of the central spar 1 is approximately twice as large as its depth, ie the cross-sectional profile has an aspect ratio of approximately 2: 1.
  • the width of the opening 4 of the C-shaped cross-section is somewhat smaller than the depth of the central spar 1.
  • rungs 2 are welded along the central spar, on the side of the central spar 1 on which the opening 4 of the C-shaped cross section is located. Each rung 2 is welded to both edges of the opening 4, whereby the central spar 1 has a similar stability as if it were made of a box profile (closed cross section).
  • the rungs 2 are usefully angled in the middle towards the central strut 1, for example by 4 °.
  • the rungs 2 are provided in the usual way with an anti-slip device, for example with a profile 7 on the top.
  • the vertical ladder is primarily used to climb concrete towers, steel and lattice masts and generally masonry. For this purpose, it is attached to these structures 10 at regular intervals by means of mounting brackets 3. For the fastening assembly of the vertical ladder to the structure 10, it is important that the work required is as small as possible, i.e. that above all the greatest possible distance between the mounting bracket 3 is permissible. The workload for connecting the bracket 3 to the vertical ladder should also be as low as possible.
  • the central spar 1 is expediently screwed onto the mounting brackets 3 by means of hammer head screws 5.
  • the hammer head screws 5 are inserted with their head through the opening 4 of the central spar 1, rotated 90 ° in a known manner and then inserted through corresponding bores in the mounting brackets 3 and tightened by screwing on a nut.
  • the vertical ladder is attached to the structure 10 such that the opening 4 faces the structure 10.
  • the vertical ladder can also be equipped with a fall protection.
  • a rail 6, which may have a similar profile to the central spar 1, is screwed onto the central spar 1 such that the opening 8 of the C-shaped profile of the rail 6 and the opening 4 of the central spar 1 face away from one another.
  • the opening 8 of the rail 6 thus faces the person climbing the ladder.
  • a climbing protection device as is known from DE-A-1 961 757, can be guided in the rail 6.
  • the rail 6 has latching lugs 9 as stop surfaces for the pawl nose of the slide of the climbing protection device, which lugs are half-pressed open from behind.
  • the central stringer consists of hot-dip galvanized steel ST 37 with a thickness of 3 mm and a width of 50 mm and a depth of 32 mm.
  • the width of the opening 4 is 24 mm.
  • the rungs 2 have a width of 375 mm and are welded to the central strut 1 at a distance of 280 mm. In such a central spar 1, a distance of 2.8 m is sufficient for the mounting bracket 3.
  • the vertical ladder is made up of sections of a maximum length of 4.48 m.
  • the rail 6 is additionally screwed onto the central strut 1.
  • the profile 6 of the rail 6 has dimensions similar to that of the central strut 1, but consists of the light metal alloy ALMGSI 0.5 with a wall thickness of 4 mm.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)

Abstract

Ladder comprising a central rail (1) having a C-shaped cross-section, comprising rungs (2) which are welded onto the rear of the central rail (1), on which the opening (4) of the C-shaped cross-section is situated, and comprising holding clips (3) for the attachment and fixing of the ladder. <IMAGE>

Description

Die Erfindung betrifft eine Steigleiter nach dem Oberbe­griff des Schutzanspruches 1.The invention relates to a vertical ladder according to the preamble of claim 1.

Eine solche Steigleiter ist aus der DE-A-1 961 757 und DE-A-2 123 629 bekannt. Die Öffnung des C-förmigen Quer­schnittes zeigt dabei nach vorne, d.h., zu der die Leiter besteigenden Person. Die Sprossen sind durch Öffnungen der Seitenflächen des Mittelholms geführt. Die Befestigung der bekannten Steigleiter an einem Bauwerk, z.B. Betontürmen und Stahl- oder Gittermasten, erfolgt durch Haltebügel, die mittels parallel zu den Sprossen verlaufender Schrauben an dem Mittelholm befestigt sind, die durch Öffnungen in den Seitenflächen des Mittelholms geführt sind. Die Befestigung kann auch durch Schrauben erfolgen, die durch Öffnungen in der geschlossenen Rück­seite des Mittelholms geführt sind. Der Mittelholm dient dabei zugleich als Führungsschiene für eine Absturzsiche­rung, wie sie in der DE-A-1 961 757 beschrieben ist. Aus Stabilitätsgründen ist bei den bekannten Steigleitern ein Abstand der Haltebügel von nicht mehr als etwa 1,12 m erforderlich. Der Sprossenabstand beträgt 28 cm. Bei der Konstruktion der bekannten Steigleiter ist ein Abstand der Haltebügel von 1,12 m in wirtschaftlicher Hinsicht optimal. Eine Vergrößerung des Abstandes der Haltebügel würde eine Verstärkung des Mittelholms erfordern, was die Gesamtkosten, die sich aus den Herstellungskosten und den Kosten für die Anbringung am Bauwerk zusammen­setzen, erhöhen würde.Such a ladder is known from DE-A-1 961 757 and DE-A-2 123 629. The opening of the C-shaped cross section points forward, ie towards the person climbing the ladder. The rungs are led through openings in the side surfaces of the central spar. The known vertical ladder is attached to a structure, for example concrete towers and steel or lattice masts, by means of holding brackets which are fastened to the central strut by means of screws which run parallel to the rungs and are guided through openings in the side faces of the central stringer. The attachment can also be done by screws that are guided through openings in the closed rear of the central spar. The central spar also serves as a guide rail for fall protection, as described in DE-A-1 961 757. For reasons of stability, a distance of the holding bracket of not more than about 1.12 m is required in the known vertical ladders. The rung spacing is 28 cm. In the construction of the well-known fixed ladder, a distance between the retaining brackets of 1.12 m is optimal in economic terms. An increase in the spacing of the holding brackets would require a reinforcement of the central spar, which would increase the total costs, which are made up of the production costs and the costs for the attachment to the structure.

Der Erfindung liegt die Aufgabe zugrunde, die Konstruktion der Steigleiter so zu verbessern, daß die sich aus den Herstellungskosten und den Kosten für die Anbringung er­gebenen Gesamtkosten verringert werden.The invention has for its object to improve the construction of the fixed ladder so that the total costs resulting from the manufacturing costs and the cost of attachment are reduced.

Bei der im Anspruch 1 angegebenen Lösung dieser Aufgabe können ohne Verstärkung des Mittelholms die Abstände der Haltebügel auf 2,80 m vergrößert werden. Die verbesserte Stabilität des Mittelholms ergibt sich dabei dadurch, daß die Sprossen durch das Anschweißen auf der Rückseite des Mittelholms dessen Stabilität erhöhen. Der Mittelholm hat dabei trotz seines C-förmig offenen Querschnittsprofils eine ähnliche Stabilität wie ein geschlossener Kastenholm. Gleichzeitig entfällt die bei den bekannten Steigleitern durch die für die Sprossen vorgesehenen Öffnungen bewirkte Schwächung des Mittelholms.In the solution to this problem specified in claim 1, the distances between the holding brackets can be increased to 2.80 m without reinforcing the central spar. The improved stability of the central spar results from the fact that the rungs increase its stability by being welded to the rear of the central spar. Despite its C-shaped open cross-sectional profile, the central spar has a similar stability to a closed box spar. At the same time, the weakening of the central spar caused by the openings provided for the rungs is eliminated in the known vertical ladders.

Bei den Ausgestaltungen der Erfindung nach den Ansprüchen 2 und 3 ergibt sich als weiterer Vorteil, daß die Befesti­gungselemente oder Hammerkopfschrauben in der Öffnung des C-förmigen Querschnitts zwischen zwei Sprossen verschoben werden können, so daß jeweils der günstigste Befestigungs­punkt an dem Bauwerk gewählt werden kann.In the embodiments of the invention according to claims 2 and 3 there is a further advantage that the fasteners or hammer head screws can be moved in the opening of the C-shaped cross section between two rungs, so that the cheapest fastening point on the structure can be selected.

Wird für die Steigleiter eine Absturzsicherung benötigt, so kann auf der geschlossenen Vorderseite des Mittelholms eine Schiene zur Führung der Absturzsicherung befestigt werden. Trotz der zusätzlichen Kosten für diese Führungs­schiene sind die Gesamtkosten auch dann noch niedriger als bei den bekannten Steigleitern.If a fall protection device is required for the vertical ladder, a rail for guiding the fall protection device can be attached to the closed front of the central strut. Despite the additional costs for this guide rail, the total costs are still lower than with the known fixed ladders.

Die Steigleiter ist zweckmäßig aus feuerverzinktem Stahl hergestellt.The fixed ladder is expediently made of hot-dip galvanized steel.

Ausführungsbeispiele der Erfindung werden nachfolgend anhand der Zeichnung erläutert. Es zeigen:

  • Fig. 1 eine Steigleiter im Querschnitt;
  • Fig. 2 ebenfalls eine Steigleiter im Querschnitt mit zusätzlicher Schiene zur Führung einer Absturz­sicherung;
  • Fig. 3 Einzelheiten der Befestigung der Halterungs­bügel am Mittelholm und
  • Fig. 4 einen Schnitt nach 4-4 von Fig. 3 in Vergrößerung.
Embodiments of the invention are explained below with reference to the drawing. Show it:
  • Figure 1 is a ladder in cross section.
  • 2 also a vertical ladder in cross section with an additional rail for guiding a fall protection;
  • Fig. 3 details of the attachment of the bracket to the central spar and
  • Fig. 4 shows a section according to 4-4 of Fig. 3 in an enlarged view.

Die Steigleiter weist einen Mittelholm 1 auf, der ein Profil mit C-förmigem Querschnitt besitzt. Die Breite des Mittelholms 1 ist etwa doppelt so groß wie dessen Tiefe, d.h., das Querschnittsprofil hat ein Seitenver­hältnis von etwa 2 : 1. Die Breite der Öffnung 4 des C-förmigen Querschnitts ist etwas kleiner als die Tiefe des Mittelholms 1. In regelmäßigen Abständen sind längs des Mittelholms 1 Sprossen 2 angeschweißt, und zwar auf der Seite des Mittelholms 1, auf der sich die Öffnung 4 des C-förmigen Querschnitts befindet. Jede Sprosse 2 ist dabei an beiden Rändern der Öffnung 4 angeschweißt, wodurch der Mittelholm 1 eine ähnliche Stabilität aufweist, wie wenn er aus einem Kastenprofil (geschlossener Querschnitt) bestehen würde. Um das Besteigen der Leiter zu erleichtern, sind die Sprossen 2 zweckmäßig in der Mitte etwas zum Mittelholm 1 hin abgewinkelt, z.B. um 4°. Außerdem sind die Sprossen 2 in üblicher Weise mit einer Rutschsicherung versehen, z.B. mit einer Profilierung 7 auf der Oberseite.The vertical ladder has a central strut 1 which has a profile with a C-shaped cross section. The width of the central spar 1 is approximately twice as large as its depth, ie the cross-sectional profile has an aspect ratio of approximately 2: 1. The width of the opening 4 of the C-shaped cross-section is somewhat smaller than the depth of the central spar 1. At regular intervals 1 rungs 2 are welded along the central spar, on the side of the central spar 1 on which the opening 4 of the C-shaped cross section is located. Each rung 2 is welded to both edges of the opening 4, whereby the central spar 1 has a similar stability as if it were made of a box profile (closed cross section). To make it easier to climb the ladder, the rungs 2 are usefully angled in the middle towards the central strut 1, for example by 4 °. In addition, the rungs 2 are provided in the usual way with an anti-slip device, for example with a profile 7 on the top.

Die Steigleiter dient vor allem zum Besteigen von Betontürmen, Stahl- und Gittermasten und generell von Mauerwerk. Sie wird dazu mittels Halterungsbügeln 3 in regelmäßigen Abständen an diesen Bauwerken 10 befestigt. Für die Befestigungsmontage der Steigleiter an dem Bau­werk 10 ist es dabei wichtig, daß der erforderlich Ar­beitsaufwand möglichst klein ist, d.h., daß vor allem ein möglichst großer Abstand der Halterungsbügel 3 zu­lässig ist. Der Arbeitsaufwand zum Verbinden der Halte­rungsbügel 3 mit der Steigleiter soll ebenfalls möglichst gering sein. Zweckmäßig wird der Mittelholm 1 durch Hammerkopfschrauben 5 an den Halterungsbügeln 3 festge­schraubt. Die Hammerkopfschrauben 5 werden mit ihrem Kopf durch die Öffnung 4 des Mittelholms 1 eingesetzt, in bekannter Weise um 90° gedreht und dann durch entspre­chende Bohrungen in den Halterungsbügeln 3 gesteckt und durch Aufschrauben einer Mutter festgezogen. Die Steig­leiter wird so an dem Bauwerk 10 befestigt, daß die Öffnung 4 dem Bauwerk 10 zugewandt ist.The vertical ladder is primarily used to climb concrete towers, steel and lattice masts and generally masonry. For this purpose, it is attached to these structures 10 at regular intervals by means of mounting brackets 3. For the fastening assembly of the vertical ladder to the structure 10, it is important that the work required is as small as possible, i.e. that above all the greatest possible distance between the mounting bracket 3 is permissible. The workload for connecting the bracket 3 to the vertical ladder should also be as low as possible. The central spar 1 is expediently screwed onto the mounting brackets 3 by means of hammer head screws 5. The hammer head screws 5 are inserted with their head through the opening 4 of the central spar 1, rotated 90 ° in a known manner and then inserted through corresponding bores in the mounting brackets 3 and tightened by screwing on a nut. The vertical ladder is attached to the structure 10 such that the opening 4 faces the structure 10.

Die Steigleiter kann auch mit einer Absturzsicherung versehen werden. Dazu wird eine Schiene 6, die ein ähn­liches Profil wie der Mittelholm 1 aufweisen kann, so auf den Mittelholm 1 aufgeschraubt, daß die Öffnung 8 des C-förmigen Profils der Schiene 6 und die Öffnung 4 des Mittelholms 1 voneinander abgewandt sind. Die Öffnung 8 der Schiene 6 ist also der die Leiter besteigenden Person zugewandt. In der Schiene 6 kann eine Steigschutzvor­richtung, wie sie aus der DE-A-1 961 757 bekannt ist, geführt werden. Die Schiene 6 weist dazu als Anschlag­flächen für die Klinkennase des Schiebers der Steig­schutzvorrichtung Rastnasen 9 auf, die von hinten halb aufgedrückt werden.The vertical ladder can also be equipped with a fall protection. For this purpose, a rail 6, which may have a similar profile to the central spar 1, is screwed onto the central spar 1 such that the opening 8 of the C-shaped profile of the rail 6 and the opening 4 of the central spar 1 face away from one another. The opening 8 of the rail 6 thus faces the person climbing the ladder. A climbing protection device, as is known from DE-A-1 961 757, can be guided in the rail 6. For this purpose, the rail 6 has latching lugs 9 as stop surfaces for the pawl nose of the slide of the climbing protection device, which lugs are half-pressed open from behind.

Bei dem in der Zeichnung dargestellten Ausführungsbei­spiel besteht der Mittelholm aus feuerverzinktem Stahl ST 37 einer Stärke von 3 mm und hat eine Breite von 50 mm und eine Tiefe von 32 mm. Die Breite der Öffnung 4 ist 24 mm. Die Sprossen 2 haben eine Breite von 375 mm und sind in einem Abstand von 280 mm am Mittelholm 1 angeschweißt. Bei einem solchen Mittelholm 1 reicht für die Halterungsbügel 3 ein Abstand von 2,8 m aus. Die Steigleiter wird aus Teilstücken von maximal 4,48 m Länge zusammengesetzt.In the embodiment shown in the drawing, the central stringer consists of hot-dip galvanized steel ST 37 with a thickness of 3 mm and a width of 50 mm and a depth of 32 mm. The width of the opening 4 is 24 mm. The rungs 2 have a width of 375 mm and are welded to the central strut 1 at a distance of 280 mm. In such a central spar 1, a distance of 2.8 m is sufficient for the mounting bracket 3. The vertical ladder is made up of sections of a maximum length of 4.48 m.

Wird eine Absturzsicherung verwendet, so wird zusätzlich die Schiene 6 an dem Mittelholm 1 angeschraubt. Die Schiene 6 hat in ihrem Profilquerschnitt ähnliche Abmes­sungen wie der Mittelholm 1, besteht jedoch aus der Leichtmetallegierung ALMGSI 0,5 einer Wandstärke von 4 mm.If a fall protection is used, the rail 6 is additionally screwed onto the central strut 1. The profile 6 of the rail 6 has dimensions similar to that of the central strut 1, but consists of the light metal alloy ALMGSI 0.5 with a wall thickness of 4 mm.

Claims (4)

1. Steigleiter mit einem Mittelholm (1), der einen C-förmigen Querschnitt aufweist, mit Sprossen (2), die an dem Mittelholm (1) befestigt sind, und mit Halterungsbügeln (3) zum Anbringen und Befestigen der Steigleiter, dadurch gekennzeichnet, daß die Sprossen (2) auf der Rückseite des Mittelholms (1) angeschweißt sind, auf der sich die Öffnung (4) des C-förmigen Querschnitts befindet.1. vertical ladder with a central spar (1) which has a C-shaped cross section, with rungs (2) which are fastened to the central spar (1), and with mounting brackets (3) for attaching and fastening the vertical ladder, characterized in that that the rungs (2) are welded to the back of the central spar (1), on which the opening (4) of the C-shaped cross section is located. 2. Steigleiter nach Anspruch 1, dadurch gekenn­zeichnet, daß die Halterungsbügel (3) mittels die Öffnungsränder des C-förmigen Querschnitts umgrei­fenden Elementen (5) an dem Mittelholm (1) befestigt sind.2. vertical ladder according to claim 1, characterized in that the bracket (3) by means of the opening edges of the C-shaped cross-section encompassing elements (5) on the central spar (1) are attached. 3. Steigleiter nach Anspruch 2, dadurch gekenn­zeichnet, daß die Befestigungselemente Ham­merkopfschrauben (5) sind.3. vertical ladder according to claim 2, characterized in that the fastening elements are hammer head screws (5). 4. Steigleiter nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß auf der Vorderseite des Mittelholms (1) eine Schiene (6) mit nach vorne offenem C-förmigen Querschnitt befestigt ist, in der eine Absturzsicherung führbar ist.4. vertical ladder according to one of claims 1 to 3, characterized in that on the front of the central spar (1) a rail (6) is attached with a C-shaped cross-section open to the front, in which a fall protection can be performed.
EP88107313A 1987-05-07 1988-05-06 Ladder Withdrawn EP0290034A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8706588U 1987-05-07
DE8706588U DE8706588U1 (en) 1987-05-07 1987-05-07 ladder

Publications (2)

Publication Number Publication Date
EP0290034A2 true EP0290034A2 (en) 1988-11-09
EP0290034A3 EP0290034A3 (en) 1989-01-25

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ID=6807782

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88107313A Withdrawn EP0290034A3 (en) 1987-05-07 1988-05-06 Ladder

Country Status (2)

Country Link
EP (1) EP0290034A3 (en)
DE (1) DE8706588U1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994003692A1 (en) * 1992-07-31 1994-02-17 Söll Gmbh Device for securing a rail-shaped component to an l-bar
WO1994003694A1 (en) * 1992-07-31 1994-02-17 Söll Gmbh Clamp for securing rail-like construction elements to l-bars by means of existing inclined bolts
EP1522673A1 (en) * 2003-10-10 2005-04-13 New Technelec S.A. Ladder with central stile

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19701076C1 (en) * 1997-01-15 1998-07-02 Fahrleitungsbau Gmbh Portable safety ladder with arrester truck
ITBS20110091A1 (en) * 2011-06-22 2012-12-23 Si Al S R L FALL SCALE AND RELATIVE PRODUCTION METHOD

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1961757A1 (en) * 1969-12-09 1971-06-24 Karl Soell Fa Fall protection device for ladders
FR2343884A1 (en) * 1976-03-09 1977-10-07 Soell Ind Schmiede METAL LADDER WITH A CENTRAL MAST
EP0214069A1 (en) * 1985-07-23 1987-03-11 Aluminium Pechiney Mast ladder

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4388983A (en) * 1982-01-25 1983-06-21 International Telephone And Telegraph Corporation Lightweight ladder
DE3440549A1 (en) * 1984-11-07 1986-05-15 Fahrleitungsbau Gmbh, 4300 Essen RISING PROTECTION LADDER

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1961757A1 (en) * 1969-12-09 1971-06-24 Karl Soell Fa Fall protection device for ladders
FR2343884A1 (en) * 1976-03-09 1977-10-07 Soell Ind Schmiede METAL LADDER WITH A CENTRAL MAST
EP0214069A1 (en) * 1985-07-23 1987-03-11 Aluminium Pechiney Mast ladder

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994003692A1 (en) * 1992-07-31 1994-02-17 Söll Gmbh Device for securing a rail-shaped component to an l-bar
WO1994003694A1 (en) * 1992-07-31 1994-02-17 Söll Gmbh Clamp for securing rail-like construction elements to l-bars by means of existing inclined bolts
WO1994003693A1 (en) * 1992-07-31 1994-02-17 Söll Gmbh Device for securing a rail-like structural component to a diagonal frame
EP1522673A1 (en) * 2003-10-10 2005-04-13 New Technelec S.A. Ladder with central stile

Also Published As

Publication number Publication date
EP0290034A3 (en) 1989-01-25
DE8706588U1 (en) 1987-08-13

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