EP0017957B1 - Scaffold working platform consisting of separate planks - Google Patents

Scaffold working platform consisting of separate planks Download PDF

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Publication number
EP0017957B1
EP0017957B1 EP19800102016 EP80102016A EP0017957B1 EP 0017957 B1 EP0017957 B1 EP 0017957B1 EP 19800102016 EP19800102016 EP 19800102016 EP 80102016 A EP80102016 A EP 80102016A EP 0017957 B1 EP0017957 B1 EP 0017957B1
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EP
European Patent Office
Prior art keywords
planks
hooks
working platform
projections
crossbars
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
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EP19800102016
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German (de)
French (fr)
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EP0017957A1 (en
Inventor
Gerhard Dobersch
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Individual
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Individual
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Publication date
Priority claimed from DE19792916236 external-priority patent/DE2916236C2/en
Priority claimed from DE19792952538 external-priority patent/DE2952538C2/en
Application filed by Individual filed Critical Individual
Publication of EP0017957A1 publication Critical patent/EP0017957A1/en
Application granted granted Critical
Publication of EP0017957B1 publication Critical patent/EP0017957B1/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/15—Scaffolds primarily resting on the ground essentially comprising special means for supporting or forming platforms; Platforms
    • E04G1/154—Non-detachably fixed and secured connections between platform and scaffold

Definitions

  • the invention relates to a working platform consisting of individual butt-jointed planks for scaffolding, in particular tubular steel scaffolding, in which the planks can be supported on the crossbars of the scaffolding with the aid of hooks fixedly arranged at their ends and can be locked on the crossbars by means of a locking device.
  • the locking device In a known work platform (French patent 2083430), the locking device consists of individual bars arranged pivotably at both ends of the boards. These lie in the latch position under their heavy weight on the circumference of a crossbar so that in cooperation with the hooks of the boards, unintentional detachment of the boards from the crossbar is prevented.
  • a locking device has a major disadvantage, which can be seen in the fact that each plank must be provided with the bolts at both ends and that the bolts must be operated by hand. The assembly and disassembly of a scaffold is therefore relatively time-consuming.
  • the invention has for its object to simplify the locking of the planks on the crossbars of the scaffold in a work platform of the type described above.
  • each plank protrusions are fixedly arranged, which after assembly of the planks underlap the outer ends of the hooks arranged on the adjacent plank, which in turn has one of its ends between two planks Reach under the cross bar.
  • the advantage achieved by the invention can be seen in the fact that the planks when creating the working platform, i. H. when the boards are supported on the crossbars of the scaffolding, lock each other automatically on the crossbars. It is only necessary, after all the planks are supported on the crossbars, to secure the planks at the two ends of the working platform, that is to say the first and last planks, at the assigned crossbars in a suitable manner. The work platform is then secured against unintentional lifting from the crossbars. The boards can be detached from the crossbars in an equally simple manner after the two boards at the two ends of the working platform have been unlocked by the crossbars assigned to them.
  • the locking device according to the invention thus enables the scaffolding to be assembled and disassembled more quickly than the known locking device.
  • the projections are designed like a console and serve as supports for the outer ends of the hooks which are operatively connected to the projections, the inner ends of these hooks enclosing the cross bar.
  • the planks are secured on the crossbars of the scaffold provided that the scaffold is usually stiffened by longitudinal bars. Otherwise, it cannot be ruled out with absolute certainty that the planks will separate from one another when the tensile forces are applied to the work platform by the hooks supported on the console-like projections lifting off the projections and sliding off the crossbars together with the adjacent hooks.
  • the projections are arranged so that they meet the ends of the hooks with which the latter the crossbars after assembly of the boards reach under, reach under at a distance from the ends.
  • 1, 2 denote two planks of the working platform in a tubular steel frame. These are on both. Provide ends with fittings 3, 4 which are firmly connected to the planks 1, 2 by means of rivets 5.
  • the boards 1, 2 have two hooks 6, 6 'at both ends, of which the hooks 6 arranged at one end of the boards 1, 2 are offset from the hooks 6' arranged at the other end of the boards 1, 2 and With which the planks 1, 2 can be supported on crossbars 7, 7 'of the scaffold.
  • two console-like projections 8 are arranged. The hooks 6, 6 'and the projections 8 are molded onto the fitting 3 and 4, respectively.
  • the assembly of the planks is as follows.
  • the one-sided raised plank 1 is attached with its hook 6 'located at one end to the cross bar 7' of the scaffold shown in dashed lines in FIG. 2 and then pivoted into the horizontal, with the cross bar 7 being attached to one end of the hook 6 ' 'reaches under. It also supports the plank 1 in this position with the hook 6 located at its other end on the next cross bar 7. Thereafter, a one-sided raised plank 2 with one end of the hooks 6 'located at one end is placed on the console-like projections 8 of the adjacent plank 1 and then pivoted so far horizontally until the hooks 6' with their other ends the crossbar 7 have reached (Fig. 3). The plank 2 is supported in this position with the hook 6 located at its other end on the next cross bar.
  • planks of the work platform are installed in the same way.
  • the first and last planks of the work platform are then secured in a suitable manner on the crossbars assigned to them. According to this, all floorboards of the working platform are secured against unintentional lifting off the crossbars on a scaffold that is stiffened by longitudinal bars.
  • the projections denoted by 8 'on the planks 1, 2 or on the fittings 3, 4 are arranged such that they have those ends of the hooks 6 "with which the hooks 6 "reach under the cross bar 7, reach under at a distance from the ends.
  • the distance is dimensioned such that the boards 1, 2 can be assembled or disassembled without obstruction by the projections 8 '.
  • FIGS. 6 and 7 of the drawing The securing of the first and the last plank of the working platform is illustrated in FIGS. 6 and 7 of the drawing for a plank designated by 1. It is carried out by bolts 9 and 10, which, depending on whether the plank 1 is at one end or the other at the working platform outside, is guided into the hooks 6 or 6 "and can be driven against the associated cross bar 7 so that the Floorboard is clamped to the crossbar.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)

Description

Die Erfindung betrifft eine aus einzelnen stumpf aneinandergereihten Dielen bestehende Arbeitsbühne bei Gerüsten, insbesondere Stahlrohrgerüsten, bei der die Dielen mit Hilfe von an ihren Enden fest angeordneten Haken an den Querriegeln des Gerüstes abstützbar und mittels einer Verriegelungseinrichtung an den Querriegeln verriegelbar sind.The invention relates to a working platform consisting of individual butt-jointed planks for scaffolding, in particular tubular steel scaffolding, in which the planks can be supported on the crossbars of the scaffolding with the aid of hooks fixedly arranged at their ends and can be locked on the crossbars by means of a locking device.

Bei einer bekannten Arbeitsbühne (französisches Patent 2083430) besteht die Verriegelungseinrichtung aus einzelnen an beiden Enden der Dielen verschwenkbar angeordneten Riegeln. Diese liegen in der Riegellage unter ihrem Schwergewicht am Umfang eines Querriegels so an, daß im Zusammenwirken mit den Haken der Dielen unbeabsichtigtes Lösen der Dielen von dem Querriegel verhütet ist. Eine derartige Verriegelungseinrichtung hat jedoch einen wesentlichen Nachteil, der darin zu erblicken ist, daß eine jede Diele an beiden Enden mit den Riegeln versehen werden muß und daß die Riegel von Hand betätigt werden müssen. Der Auf- und Abbau eines Gerüstes ist hierdurch relativ zeitaufwendig. Es läßt sich ferner nicht ausschließen, daß die Riegel an den Gelenken bei vornehmlich im Freien erstellten Gerüsten mit der Zeit Rost ansetzen, wodurch zum Betätigen der Riegel auf diese möglicherweise Hammerschläge ausgeübt werden müssen. Der Auf- und Abbau des Gerüstes erfordert für diesen Fall noch einen größeren Zeitaufwand, als er durch die Betätigung der Riegel ohnehin schon erforderlich ist.In a known work platform (French patent 2083430), the locking device consists of individual bars arranged pivotably at both ends of the boards. These lie in the latch position under their heavy weight on the circumference of a crossbar so that in cooperation with the hooks of the boards, unintentional detachment of the boards from the crossbar is prevented. However, such a locking device has a major disadvantage, which can be seen in the fact that each plank must be provided with the bolts at both ends and that the bolts must be operated by hand. The assembly and disassembly of a scaffold is therefore relatively time-consuming. Furthermore, it cannot be ruled out that the bolts on the joints of scaffolds, which are primarily made outdoors, will rust over time, which means that hammer blows may have to be exerted on them to actuate them. The assembly and disassembly of the scaffolding requires a greater amount of time in this case than is already necessary due to the actuation of the bolts.

Der Erfindung liegt die Aufgabe zugrunde, bei einer Arbeitsbühne der eingangs beschriebenen Gattung die Verriegelung der Dielen auf den Querriegeln des Gerüstes zu vereinfachen.The invention has for its object to simplify the locking of the planks on the crossbars of the scaffold in a work platform of the type described above.

Die Lösung der Aufgabe besteht erfindungsgemäß darin, daß an dem einen Ende einer jeden Diele Vorsprünge fest angeordnet sind, die nach Montage der Dielen die äußeren Enden der an der jeweils benachbarten Diele angeordneten Haken unterfassen, welche ihrerseits mit einem ihrer Enden den zwischen zwei Dielen befindlichen Querriegel untergreifen.The solution to the problem is according to the invention that at one end of each plank protrusions are fixedly arranged, which after assembly of the planks underlap the outer ends of the hooks arranged on the adjacent plank, which in turn has one of its ends between two planks Reach under the cross bar.

Der durch die Erfindung erreichte Vorteil ist darin zu erblicken, daß sich die Dielen beim Erstellen der Arbeitsbühne, d. h. beim Abstützen der Dielen an die Querriegel des Gerüstes, selbsttätig an den Querriegeln gegenseitig verriegeln. Es brauchen lediglich, nachdem sämtliche Dielen an den Querriegeln abgestützt sind, die an den beiden Enden der Arbeitsbühne befindlichen Dielen, also die erste und die letzte Diele, an den zugeordneten Querriegeln in geeigneter Weise gesichert zu werden. Die Arbeitsbühne ist hiernach vor unbeabsichtigtem Abheben von den Querriegeln gesichert. In ebenso einfacher Weise lassen sich die Dielen wieder von den Querriegeln lösen, nachdem zuvor die an den beiden Enden der Arbeitsbühne befindlichen beiden Dielen von den ihnen zugeordneten Querriegeln entriegelt worden sind. Die erfindungsgemäße Verriegelungseinrichtung ermöglicht somit gegenüber der bekannten Verriegelungseinrichtung einen schnelleren Auf- und Abbau des Gerüstes.The advantage achieved by the invention can be seen in the fact that the planks when creating the working platform, i. H. when the boards are supported on the crossbars of the scaffolding, lock each other automatically on the crossbars. It is only necessary, after all the planks are supported on the crossbars, to secure the planks at the two ends of the working platform, that is to say the first and last planks, at the assigned crossbars in a suitable manner. The work platform is then secured against unintentional lifting from the crossbars. The boards can be detached from the crossbars in an equally simple manner after the two boards at the two ends of the working platform have been unlocked by the crossbars assigned to them. The locking device according to the invention thus enables the scaffolding to be assembled and disassembled more quickly than the known locking device.

Eine vorteilhafte Ausführungsform der Erfindung besteht darin, daß die Vorsprünge konsolenartig gestaltet sind und den äußeren Enden der mit den Vorsprüngen in Wirkverbindung stehenden Haken als Auflager dienen, wobei die inneren Enden dieser Haken den Querriegel unterfassen.An advantageous embodiment of the invention is that the projections are designed like a console and serve as supports for the outer ends of the hooks which are operatively connected to the projections, the inner ends of these hooks enclosing the cross bar.

Bei dieser Ausführungsform der Erfindung sind die Dielen auf den Querriegeln des Gerüstes unter der Voraussetzung gesichert, daß das Gerüst üblicherweise durch Längsriegel versteift ist. Denn es läßt sich anderenfalls nicht mit letzter Sicherheit ausschließen, daß sich die Dielen bei an der Arbeitsbühne angreifenden Zugkräften voneinander lösen, indem sich die auf den konsolenartigen Vorsprüngen abgestützten Haken von den Vorsprüngen abheben und zusammen mit den benachbarten Haken von den Querriegeln abrutschen.In this embodiment of the invention, the planks are secured on the crossbars of the scaffold provided that the scaffold is usually stiffened by longitudinal bars. Otherwise, it cannot be ruled out with absolute certainty that the planks will separate from one another when the tensile forces are applied to the work platform by the hooks supported on the console-like projections lifting off the projections and sliding off the crossbars together with the adjacent hooks.

Um zu gewährleisten, daß die Dielen auch ohne Längsriegel bei an der Arbeitsbühne angreifenden Zugkräften auf den Querriegeln gesichert sind, sind in einer anderen Ausführungsform der Erfindung die Vorsprünge so angeordnet, daß sie die Enden der Haken, mit denen letztere nach Montage der Dielen den Querriegel untergreifen, in Abstand von den Enden untergreifen.In order to ensure that the floorboards are secured on the crossbars even without longitudinal bolts when tensile forces are applied to the working platform, in another embodiment of the invention the projections are arranged so that they meet the ends of the hooks with which the latter the crossbars after assembly of the boards reach under, reach under at a distance from the ends.

Im folgenden wird die Erfindung in zwei Ausführungsbeispielen anhand der Zeichnung noch näher erläutert. In derZeichnung zeigt

  • Fig. 1 zwei teilweise gezeichnete Dielen einer Arbeitsbühne vor dem Abstützen an einem Querriegel eines Stahlrohrgerüstes in Seitenansicht,
  • Fig. 2 die Dielen an dem Querriegel abgestützt in Draufsicht,
  • Fig. einen Schnitt nach der Linie 111-111 der Fig. 2,
  • Fig. 4 zwei teilweise gezeichnete, an einem Querriegel abgestützte Dielen in einer anderen Ausführungsform der Erfindung im Längsschnitt,
  • Fig. 5 die Dielen in Draufsicht,
  • Fig. 6 und 7 die Sicherung der ersten und letzten Diele der Arbeitsbühne auf den zugehörigen Querriegeln.
The invention is explained in more detail below in two exemplary embodiments with reference to the drawing. In the drawing shows
  • 1 shows two partially drawn planks of a working platform before support on a cross bar of a tubular steel frame in a side view,
  • 2 the planks supported on the cross bar in plan view,
  • FIG. 1 shows a section along the line 111-111 of FIG. 2,
  • 4 shows two partially drawn planks supported on a cross bar in another embodiment of the invention in longitudinal section,
  • 5 the floorboards in plan view,
  • 6 and 7, the securing of the first and last plank of the work platform on the associated crossbars.

Bei dem in den Fig. 1-3 der Zeichnung dargestellten Ausführungsbeispiel der Erfindung sind mit 1, 2 zwei Dielen der Arbeitsbühne bei einem Stahlrohrgerüst bezeichnet. Diese sind an beider. Enden mit Beschlägen 3, 4 versehen, die mittels Nieten 5 mit den Dielen 1, 2 fest verbunden sind. Die Dielen 1, 2 weisen an beiden Enden zwei Haken 6, 6' auf, von denen die an dem einen Ende der Dielen 1, 2 angeordneten Haken 6 zu den an dem anderen Ende der Dielen 1, 2 angeordneten Haken 6' versetzt sind und mit denen die Dielen 1, 2 an Querriegeln 7, 7' des Gerüstes abstützbar sind. Neben den Haken 6 sind zwei konsolenartige Vorsprünge 8 angeordnet. Die Haken 6, 6' und die Vorsprünge 8 sind an dem Beschlag 3 bzw. 4 angeformt.In the embodiment of the invention shown in FIGS. 1-3 of the drawing, 1, 2 denote two planks of the working platform in a tubular steel frame. These are on both. Provide ends with fittings 3, 4 which are firmly connected to the planks 1, 2 by means of rivets 5. The boards 1, 2 have two hooks 6, 6 'at both ends, of which the hooks 6 arranged at one end of the boards 1, 2 are offset from the hooks 6' arranged at the other end of the boards 1, 2 and With which the planks 1, 2 can be supported on crossbars 7, 7 'of the scaffold. In addition to the hook 6, two console-like projections 8 are arranged. The hooks 6, 6 'and the projections 8 are molded onto the fitting 3 and 4, respectively.

Die Montage der Dielen ist folgende.The assembly of the planks is as follows.

Die einseitig angehobene Diele 1 wird mit ihren an ihrem einen Ende befindlichen Haken 6' an den in Fig. 2 gestrichelt dargestellten Querriegel 7' des Gerüstes angesetzt und hiernach in die Horizontale verschwenkt, wobei sie mit den einen Enden der Haken 6' den Querriegel 7' untergreift. Es stützt sich ferner die Diele 1 in dieser Lage mit den an ihrem anderen Ende befindlichen Haken 6 an dem nächstfolgenden Querriegel 7 ab. Hiernach wird eine einseitig angehobene Diele 2 mit den einen Enden der an ihrem einen Ende befindlichen Haken 6' auf die konsolenartigen Vorsprünge 8 der benachbarten Diele 1 aufgesetzt und sodann so weit in die Horizontale verschwenkt, bis die Haken 6' mit ihren anderen Enden den Querriegel 7 untergriffen haben (Fig. 3). Die Diele 2 stützt sich dabei in dieser Lage mit den an ihrem anderen Ende befindlichen Haken 6 auf dem nächstfolgenden Querriegel ab. In gleicher Weise erfolgt die Montage der übrigen Dielen der Arbeitsbühne. Die erste sowie die letzte Diele der Arbeitsbühne werden sodann auf den ihnen zugeordneten Querriegeln in geeigneter Weise gesichert. Hiernach sind sämtliche Dielen der Arbeitsbühne gegen unbeabsichtigtes Abheben von den Querriegeln bei einem Gerüst, das durch Längsriegel versteift ist, gesichert.The one-sided raised plank 1 is attached with its hook 6 'located at one end to the cross bar 7' of the scaffold shown in dashed lines in FIG. 2 and then pivoted into the horizontal, with the cross bar 7 being attached to one end of the hook 6 ' 'reaches under. It also supports the plank 1 in this position with the hook 6 located at its other end on the next cross bar 7. Thereafter, a one-sided raised plank 2 with one end of the hooks 6 'located at one end is placed on the console-like projections 8 of the adjacent plank 1 and then pivoted so far horizontally until the hooks 6' with their other ends the crossbar 7 have reached (Fig. 3). The plank 2 is supported in this position with the hook 6 located at its other end on the next cross bar. The other planks of the work platform are installed in the same way. The first and last planks of the work platform are then secured in a suitable manner on the crossbars assigned to them. According to this, all floorboards of the working platform are secured against unintentional lifting off the crossbars on a scaffold that is stiffened by longitudinal bars.

Bei dem in den Fig.4 und 5 der Zeichnung dargestellten Ausführungsbeispiel der Erfindung sind die mit 8' bezeichneten Vorsprünge an den Dielen 1, 2 bzw. an den Beschlägen 3, 4 so angeordnet, daß sie diejenigen Enden der Haken 6", mit denen die Haken 6" den Querriegel 7 untergreifen, in Abstand von den Enden untergreifen. Der Abstand ist dabei so bemessen, daß die Dielen 1, 2 ohne Behinderung durch die Vorsprünge 8' montiert bzw. demontiert werden können. Nach Verriegelung mit den Querriegeln 7 und nachdem die erste und die letzte Diele der Arbeitsbühne auf den zugehörigen Querriegeln 7 festgelegt worden sind, sind die Dielen gegen unbeabsichtigtes Abheben von den Querriegeln gesichert, ohne daß es einer Versteifung des Gerüstes durch Längsriegel bedarf.In the embodiment of the invention shown in FIGS. 4 and 5 of the drawing, the projections denoted by 8 'on the planks 1, 2 or on the fittings 3, 4 are arranged such that they have those ends of the hooks 6 "with which the hooks 6 "reach under the cross bar 7, reach under at a distance from the ends. The distance is dimensioned such that the boards 1, 2 can be assembled or disassembled without obstruction by the projections 8 '. After locking with the crossbars 7 and after the first and last planks of the working platform have been fixed on the associated crossbars 7, the planks are secured against unintentional lifting off the crossbars without the frame being stiffened by longitudinal bolts.

Die Sicherung der ersten und der letzten Diele der Arbeitsbühne ist in den Fig. 6 und 7 der Zeichnung bei einer mit 1 bezeichneten Diele veranschaulicht. Sie erfolgt durch Bolzen 9 bzw. 10, die, je nachdem ob die Diele 1 mit ihrem einen oder anderen Ende bei der Arbeitsbühne außen liegt, in den Haken 6 bzw. 6" geführt und gegen den zugehörigen Querriegel 7 so treibbar sind, daß die Diele an dem Querriegel festgeklemmt ist.The securing of the first and the last plank of the working platform is illustrated in FIGS. 6 and 7 of the drawing for a plank designated by 1. It is carried out by bolts 9 and 10, which, depending on whether the plank 1 is at one end or the other at the working platform outside, is guided into the hooks 6 or 6 "and can be driven against the associated cross bar 7 so that the Floorboard is clamped to the crossbar.

Claims (4)

1. A working platform for scaffolds, in particular steel tube scaffolds, consisting of individual butt-joined planks, in which the planks (1, 2) are able to be supported by the cross-pipes (7) of the scaffold with the aid of hooks (6, 6', 6") fixedly secured to the ends of the planks and to be locked on the cross-pipes (7) by means of a locking arrangement, characterised in that projections (8 or 8') are fixedly secured to one end of each plank (1, 2) which projections after the mounting of the planks (1, 2) engage the outer ends of the hooks (6' or 6") arranged on the respective neighbouring plank (1 or 2) from below, said hooks engaging in turn with one of their ends the cross-pipe (7) between two planks (1, 2) from below.
2. A working platform according to claim 1, characterised in that the projections (8) are in the form of brackets and serve as a bearing for the outer ends of the hooks (6') cooperating with the projections (8), the inner ends of these hooks (6') engaging the cross-pipe (7) from below.
3. A working platform according to claim 1, characterised in that the projections (8') engage the outer ends of the hooks (6") from below at a distance from the ends, said latter hooks engaging the cross-pipe (7) from below after the mounting of the planks (1, 2).
4. A working platform according to one of claims 1 -3, characterised in that the hooks (6, 6', 6") and the projections (8, 8') are formed integral with the fittings (3 or 4).
EP19800102016 1979-04-21 1980-04-15 Scaffold working platform consisting of separate planks Expired EP0017957B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE2916236 1979-04-21
DE19792916236 DE2916236C2 (en) 1979-04-21 1979-04-21 Working platform on scaffolding
DE2952538 1979-12-28
DE19792952538 DE2952538C2 (en) 1979-12-28 1979-12-28 Working platform on scaffolding

Publications (2)

Publication Number Publication Date
EP0017957A1 EP0017957A1 (en) 1980-10-29
EP0017957B1 true EP0017957B1 (en) 1982-09-15

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EP19800102016 Expired EP0017957B1 (en) 1979-04-21 1980-04-15 Scaffold working platform consisting of separate planks

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE443602B (en) * 1981-03-30 1986-03-03 Floby Durk Ab ANCHORING DRAFT FOR BUILDING PLAN IN BUILDING POSITIONS
EP0238680A1 (en) * 1986-03-24 1987-09-30 Gerhard Dobersch Platform for scaffolds
DE3808100A1 (en) * 1988-03-11 1989-09-21 Langer Ruth Geb Layher SCAFFOLDING FLOOR
FR2702507B1 (en) * 1993-03-08 1995-06-16 Entreprose Montalev FLOOR ELEMENT FOR SCAFFOLDING.
DE4324194C1 (en) * 1993-07-07 1994-08-11 Liebenwalder Nutzfahrzeug Gmbh Securing means of the covering boards of a scaffolding

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3434567A (en) * 1966-12-09 1969-03-25 Midland Ross Corp Work platform for scaffolds

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