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FR2600102A1 - System for the locking in position, particularly of a platform supporting shuttering panels - Google Patents

System for the locking in position, particularly of a platform supporting shuttering panels Download PDF

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Publication number
FR2600102A1
FR2600102A1 FR8608878A FR8608878A FR2600102A1 FR 2600102 A1 FR2600102 A1 FR 2600102A1 FR 8608878 A FR8608878 A FR 8608878A FR 8608878 A FR8608878 A FR 8608878A FR 2600102 A1 FR2600102 A1 FR 2600102A1
Authority
FR
France
Prior art keywords
legs
locking
tube
branches
support
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
FR8608878A
Other languages
French (fr)
Other versions
FR2600102B1 (en
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.)
BERTHON ROGER
Original Assignee
BERTHON ROGER
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 BERTHON ROGER filed Critical BERTHON ROGER
Priority to FR8608878A priority Critical patent/FR2600102B1/en
Publication of FR2600102A1 publication Critical patent/FR2600102A1/en
Application granted granted Critical
Publication of FR2600102B1 publication Critical patent/FR2600102B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/12Slings comprising chains, wires, ropes, or bands; Nets
    • B66C1/16Slings with load-engaging platforms or frameworks
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/32Safety or protective measures for persons during the construction of buildings
    • E04G21/3204Safety or protective measures for persons during the construction of buildings against falling down
    • E04G21/3219Means supported by the building wall, e.g. security consoles
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/32Safety or protective measures for persons during the construction of buildings
    • E04G21/3261Safety-nets; Safety mattresses; Arrangements on buildings for connecting safety-lines
    • E04G21/3266Safety nets
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G5/00Component parts or accessories for scaffolds
    • E04G5/04Means for fastening, supporting, or bracing scaffolds on or against building constructions
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G5/00Component parts or accessories for scaffolds
    • E04G5/04Means for fastening, supporting, or bracing scaffolds on or against building constructions
    • E04G5/046Means for fastening, supporting, or bracing scaffolds on or against building constructions for fastening scaffoldings on walls
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G5/00Component parts or accessories for scaffolds
    • E04G5/06Consoles; Brackets
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G5/00Component parts or accessories for scaffolds
    • E04G5/06Consoles; Brackets
    • E04G5/062Consoles; Brackets specially adapted for attachment to building walls
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G5/00Component parts or accessories for scaffolds
    • E04G2005/008Hoisting devices specially adapted as part of a scaffold system

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Ladders (AREA)

Abstract

The subject of the invention relates to the technical field of building, and more particularly of scaffolding. The locking system according to the invention is noteworthy in that the locking tube 1 is mounted at each end, between two support tabs 2 which are each coupled at the end to a profiled tab 3 articulated on a part of the brackets, and forming two arms 3a and 3b arranged angularly, one of the said arms receiving the support tabs 2 while the other arm is designed to interact with handling means.

Description

L'invention concerne un système de verrouillage en position, notamment d'une passerelle support de banches. The invention relates to a locking system in position, in particular of a platform support platform.

L'objet de l'invention se rattache au secteur technique du bâtiment plus particulièrement des échafaudages. The object of the invention relates to the technical sector of the building more particularly of scaffolding.

I1 est connu d'utiliser dans le bâtiment des passerelles repliables et extensibles pour supporter des banches. I1 is known to use in the building foldable and extendable gangways to support forms.

Généralement, ces passerelles sont composées, pour l'essentiel, d'un plancher ou autre monté en appui horizontal sur des consoles support entretoisées dans leur partie arrière notamment pour constituer un ensemble rigide. Ces consoles sont équipées en outre d'un système de verrouillage au moyen d'un tube -desti- né à coopérer avec des cro < .ets pignons fixés sur une partie du bâtiment.Generally, these walkways are essentially composed of a floor or the like mounted in horizontal support on support brackets braced in their rear part in particular to constitute a rigid assembly. These consoles are furthermore equipped with a locking system by means of a tube intended to cooperate with gable hooks fixed to a part of the building.

Un problème très important apparaît au niveau du verrouillage qui demande une certaine habileté pour faire coopérer correctement et rapidement le tube avec les crochets. I1 en est de même pour le déverrouillage. En effet, le tube est monté à chaque extrémité en bout de l'une des branches d'une patte équerrée articulée sur une partie des consoles. A l'opposé, l'autre branche presente en bout un anneau de levage destiné à être accroché aux élingues d'une grue par exemple. Sous l'effet de pivotement des pattes équerrées autour due leur axe d'articulation, le tube de verrouillage devrait théoriquement coopérer sur une partie des crochets pignons. Toutefois, la pratique montre que cet accrochage n'est pas aisé et ne peut être fait automatiquement.De plus, il est nécessaire de prévoir des crochets pignons avec des pattes de verrouillage de longueur relativement importante. A very important problem appears at the level of the locking which requires a certain skill to make the tube cooperate correctly and quickly with the hooks. It is the same for unlocking. Indeed, the tube is mounted at each end at the end of one of the branches of a squared leg articulated on a part of the consoles. In contrast, the other branch has a lifting ring at the end intended to be hooked to the slings of a crane, for example. Under the pivoting effect of the legs squared around due to their axis of articulation, the locking tube should theoretically cooperate on part of the pinion hooks. However, practice shows that this attachment is not easy and cannot be done automatically. In addition, it is necessary to provide pinion hooks with locking tabs of relatively large length.

Le problème étant ainsi posé, pour remédier à ces inconvénients, l'invention s'est fixée pour but, d'une manière simple, efficace et rationnelle d'améliorer le système de verrouillage. A cet égard, le tube de verrouillage est monté à chaque extrémité, entre deux pattes support qui sont accouplées chacune en bout d'une patte profilée articulée sur une partie des consoles et formant deux branches disposées angulairement, l'une desdites branches recevant les pattes support tandis que l'autre branche est agencée pour coopérer avec des moyens de manutention. The problem thus being posed, to remedy these drawbacks, the invention has set itself the aim of improving the locking system in a simple, efficient and rational manner. In this regard, the locking tube is mounted at each end, between two support legs which are each coupled at the end of a profiled leg articulated on a part of the brackets and forming two branches arranged angularly, one of said branches receiving the legs support while the other branch is arranged to cooperate with handling means.

L'invention est exposée ci-après plus en détail à l'aide des dessins
- la figure 1 est une vue en perspective du système de verrouillage seul,
- la figure 2 est une vue en perspective d'une passerelle équipée du système de verrouillage et avant sa mise en place sur les crochets pignons.
The invention is set out below in more detail using the drawings
FIG. 1 is a perspective view of the locking system alone,
- Figure 2 is a perspective view of a gangway equipped with the locking system and before its installation on the pinion hooks.

Les figures 3, 4 et 5 sont des vues partielles de côté, montrant le fonctionnement du système :
- la figure 3 illustre la passerelle verrouillée,
- la figure 4 illustre la passerelle déverrouillée,
- la figure 5 illustre l'enlèvement de la passerelle,
Afin de rendre plus concret l'objet de l'invention, on le décrit maintenant d'une manière non limitative en se référant aux exemples de réalisation des figures des dessins.
Figures 3, 4 and 5 are partial side views showing the operation of the system:
FIG. 3 illustrates the locked gateway,
FIG. 4 illustrates the unlocked gateway,
- Figure 5 illustrates the removal of the bridge,
In order to make the object of the invention more concrete, it is now described in a nonlimiting manner with reference to the exemplary embodiments of the figures of the drawings.

D'une manière connue, et dans la forme de réalisation illustrée donnée à titre d'exemple, la passerelle support de banche comprend essentiellement un plancher (P) ou autre, fixé horizontalement sur deux consoles support parallèles (C) entretoisées dans leur partie arrière pour constituer un ensemble rigide. Les consoles peuvent être repliables et extensibles. In a known manner, and in the illustrated embodiment given by way of example, the platform support gangway essentially comprises a floor (P) or the like, fixed horizontally on two parallel support consoles (C) braced in their rear part. to form a rigid unit. The consoles can be foldable and extendable.

Sur les ailes horizontales (C1) des consoles est articulé le système de verrouillage (figure 2).On the horizontal wings (C1) of the consoles is articulated the locking system (figure 2).

Selon l'invention, le système se compose, comme le montre la figure 1, d'un tube de verrouillage (1) monté entre deux pattes support parallèles (2). Ces pattes (2) sont fixées chacune aux extrémités des branches (3a) d'une patte profilée (3) dont les deux branches (3a) et (3b) sont disposées angulai rement. Ces pattes profilées (3) sont articulées, au niveau du raccordement de leurs branches (3a) et (3b), sur les ailes horizontales (C1) des consoles. According to the invention, the system consists, as shown in Figure 1, of a locking tube (1) mounted between two parallel support legs (2). These tabs (2) are each fixed to the ends of the branches (3a) of a profiled tab (3) whose two branches (3a) and (3b) are arranged angularly. These profiled tabs (3) are articulated, at the connection of their branches (3a) and (3b), on the horizontal wings (C1) of the consoles.

D'une manière préférée, les pattes (2) qui sont constituées par un fer plat, sont fixées, d'une manière articulée en bout des branches (3a). Dans ce but, elle sont percées à l'une de leur extrémité, pour le passage d'un axe (4). Ce montage articulé des pattes (2) ne doit cependant pas exclure un montage fixe. Dans ce cas, les pattes (2) sont disposées très sensiblement parallèlement aux branches (3b) des pattes profilées angulairement (3). Preferably, the legs (2) which are constituted by a flat iron, are fixed, in an articulated manner at the end of the branches (3a). For this purpose, they are drilled at one of their ends, for the passage of an axis (4). This articulated mounting of the legs (2) should not however exclude a fixed mounting. In this case, the legs (2) are arranged very substantially parallel to the branches (3b) of the angularly profiled legs (3).

Comme indiqué dans le préambule, l'extrémité libre des branches (3b), présent en bout un anneau (5) pour permettre par exemple l'accrochage des élingues d'une grue. D'une manière connue, les deux branches (3a) et (3b) sont décalées angulairement de très sensiblement 150 degrés. As indicated in the preamble, the free end of the branches (3b), present at the end a ring (5) to allow for example the attachment of the slings of a crane. In a known manner, the two branches (3a) and (3b) are angularly offset by very substantially 150 degrees.

Pour le montage du tube de verrouillage (1) en bout des pattes support (2), afin d'obtenir un assemblage facilement démontable, lesdites pattes sont percées pour autoriser le libre engagement du tube (1) qui est maintenu en translation au moyen par exemple de goupilles. For mounting the locking tube (1) at the end of the support legs (2), in order to obtain an easily removable assembly, said legs are drilled to allow the free engagement of the tube (1) which is held in translation by means of example of pins.

D'une manière avantageuse, le tube de verrouillage (1) est réglable en hauteur sur les pattes-support (2). A cet effet, chaque patte (2) est percée de plusieurs trous (2a), deux notamment, pour correspondre à la hauteur désirée du tube, après engagement dans l'un des trous (2a). Le tube (1) peut donc occuper essentiellement une position haute ou une position basse en fonction des applications et conditions d'installation. Advantageously, the locking tube (1) is adjustable in height on the support legs (2). For this purpose, each tab (2) is pierced with several holes (2a), two in particular, to correspond to the desired height of the tube, after engagement in one of the holes (2a). The tube (1) can therefore essentially occupy a high position or a low position depending on the applications and installation conditions.

Le tube (1) est destiné à coopérer avec une partie des crochets-pignons (6) fixés en façade du bâtiment (figure 2). On se réfère maintenant aux figures 3, 4 et 5 pour expliquer le fonctionnement du système. Pour le verrouillage, figure 3, après avoir positionné la passerelle sur les crochets (6), on pivote angulairement les pattes (3) ce qui entraîne concomi tamment les pattes support (2) du tube (1), jusqu'à ce que ce dernier vienne se positionner sous un rebord (6a) d'une branche inclinée (6b) des crochets (6). Compte-tenu du montage articulé des pattes (2), on est certain de bien crocheter le tube (1) sous le rebord (6a) des crochets. The tube (1) is intended to cooperate with part of the pinion hooks (6) fixed on the front of the building (Figure 2). We now refer to Figures 3, 4 and 5 to explain the operation of the system. For locking, Figure 3, after positioning the gangway on the hooks (6), the legs (3) are angularly pivoted which concomitantly drives the support legs (2) of the tube (1), until this the latter comes to be positioned under a rim (6a) of an inclined branch (6b) of the hooks (6). Given the articulated mounting of the legs (2), it is certain to well hook the tube (1) under the flange (6a) of the hooks.

Pour le déverrouillage, après avoir accroché les élingues d'une grue sur les anneaux (5) des pattes (3), la force de traction exercée a pour effet de faire pivoter angulairement les pattes (3) dans un sens opposé au précédent, ce qui dégage automatiquement le tube de verrouillage (1) supporté par les pattes articulées (2) (figure 4). I1 est alors possible d'enlever totalement la passerelle (figure 5). For unlocking, after having hooked the slings of a crane on the rings (5) of the legs (3), the pulling force exerted has the effect of angularly pivoting the legs (3) in a direction opposite to the previous one, this which automatically releases the locking tube (1) supported by the articulated lugs (2) (Figure 4). It is then possible to completely remove the gateway (Figure 5).

Les avantages ressortent bien de la description. En particulier, on souligne, la facilité de verrouillage et de déverrouillage. I1 est possible de diminuer la longueur de la branche inclinée des crochets pignons (6). The advantages are apparent from the description. In particular, it is emphasized, the ease of locking and unlocking. It is possible to reduce the length of the inclined branch of the pinion hooks (6).

I1 est bien évident que les différents accessoires de la passerelle tels que les moyens de protection et autres ne sont pas décrits car ils ne font pas partie de l'objet spécifique du brevet. It is obvious that the various accessories of the gateway such as the protection means and the like are not described since they do not form part of the specific subject of the patent.

L'invention ne se limite aucunement à celui de ses modes d'application non plus qu'à ceux des modes de réalisation de ses diverses parties ayant plus spécialement été indiquées elle en embrasse au contraire toutes les variantes.  The invention is in no way limited to that of its modes of application any more than to those of the embodiments of its various parts having been more especially indicated, on the contrary it embraces all variants.

Claims (7)

REVENDICATIONS - 1 - Système de verrouillage en position notamment des passerelles support de banches comprenant essentiellement un plancher monté sur des consoles support (C) avec moyen de protection, lesdites consoles (C) étant équipées d'un système de verrouillage au moyen d'un tube (1) destiné à coopérer avec des crochets pignons (6) fixés sur la façade du bâtiment, caractérisé en ce que le tube de verrouillage (1) est monté à chaque extrémité, entre deux pattes support (2) qui sont accouplées chacune en bout d'une patte profilée (3) articulée sur une partie des consoles et f- mant deux branches (3a) et (3b) disposées angulairement, l une desdites branches recevant les pattes support (2) tandis que l'autre branche est agencée pour coopérer avec des moyens de manutention.- 1 - System for locking in position, especially for platform support gangways essentially comprising a floor mounted on support consoles (C) with protection means, said consoles (C) being equipped with a locking system by means of a tube (1) intended to cooperate with pinion hooks (6) fixed on the facade of the building, characterized in that the locking tube (1) is mounted at each end, between two support legs (2) which are each coupled at the end a profiled tab (3) articulated on a part of the brackets and forming two branches (3a) and (3b) arranged angularly, one of said branches receiving the support legs (2) while the other branch is arranged for cooperate with handling means. - 2 - Système selon la revendication 1, caractérisé en ce que les pattes (2) sont fixées en bout des branches (3a) d'une manière articulée.- 2 - System according to claim 1, characterized in that the legs (2) are fixed at the end of the branches (3a) in an articulated manner. - 3 - Système selon la revendication 1, caractérisé en ce que les pattes (2) sont fixées en bout des branches (3a) d'une manière fixe, lesdites pattes étant disposées parallèlement aux branches (3b)-des pattes (3).- 3 - System according to claim 1, characterized in that the legs (2) are fixed at the end of the branches (3a) in a fixed manner, said legs being arranged parallel to the branches (3b) -laws (3). - 4 - Système selon la revendication 1, caractérisé en ce que les branches (3a) et (3b) des pattes (3) sont décalées d'environ 150 degrés, lesdites pattes étant articulées sur la console support au niveau du raccordement de leur branche.- 4 - System according to claim 1, characterized in that the legs (3a) and (3b) of the legs (3) are offset by about 150 degrees, said legs being articulated on the support console at the connection of their branch . - 5 - Système selon la revendication 1, caractérisé en ce que le tube de verrouillage est engagé librement dans un trou formé dans l'épaisseur de chacune des pattes correspondante (2) en étant maintenu en translation au moyen de goupilles. - 5 - System according to claim 1, characterized in that the locking tube is freely engaged in a hole formed in the thickness of each of the corresponding tabs (2) while being held in translation by means of pins. - 6 - Système selon la revendication 1, caractérisé en ce que le tube (1) est monté dans les pattes-support (2), avec capacité de réglage en hauteur.- 6 - System according to claim 1, characterized in that the tube (1) is mounted in the support legs (2), with capacity for height adjustment. - 7 - Système selon les revendications 5 et 6 ensemble, caractérisé en ce que chaque patte (2) présente au moins deux trous (2a) décalés en hauteur pour le montage du tube (1) et son réglage en hauteur. - 7 - System according to claims 5 and 6 together, characterized in that each tab (2) has at least two holes (2a) offset in height for mounting the tube (1) and its height adjustment.
FR8608878A 1986-06-12 1986-06-12 POSITION LOCKING SYSTEM, IN PARTICULAR OF A BANCHES GATEWAY Expired - Fee Related FR2600102B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8608878A FR2600102B1 (en) 1986-06-12 1986-06-12 POSITION LOCKING SYSTEM, IN PARTICULAR OF A BANCHES GATEWAY

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8608878A FR2600102B1 (en) 1986-06-12 1986-06-12 POSITION LOCKING SYSTEM, IN PARTICULAR OF A BANCHES GATEWAY

Publications (2)

Publication Number Publication Date
FR2600102A1 true FR2600102A1 (en) 1987-12-18
FR2600102B1 FR2600102B1 (en) 1992-03-20

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Application Number Title Priority Date Filing Date
FR8608878A Expired - Fee Related FR2600102B1 (en) 1986-06-12 1986-06-12 POSITION LOCKING SYSTEM, IN PARTICULAR OF A BANCHES GATEWAY

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FR (1) FR2600102B1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0758041A1 (en) * 1995-08-09 1997-02-12 Manuel Brito Working platform for different facades, CTB21
FR2929306A1 (en) * 2008-03-26 2009-10-02 Paul Marie Bernard V-shaped integrated lock hook for support of shuttering wall form in concrete building construction, has locking units occupying retracted position in hook and locking position and associated with overlocking units to manual unlock
FR2991361A1 (en) * 2012-06-05 2013-12-06 Lagneaux Marcel Sa Device for providing safety and protection against falls for blue-collar worker during building construction, has reception unit on frame, where frame has netting, and reception unit including supporting unit to support frame vertically
US20150023774A1 (en) * 2013-07-17 2015-01-22 John Seto Folding guard rail method and apparatus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2136395A5 (en) * 1972-04-10 1972-12-22 Outinord Sa Ets
FR2422008A1 (en) * 1977-03-22 1979-11-02 Toulouze Andre Cantilever frame for temporary working platform - has lifting eye on pivoted block which locks under wall hook supporting frame rail

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2136395A5 (en) * 1972-04-10 1972-12-22 Outinord Sa Ets
FR2422008A1 (en) * 1977-03-22 1979-11-02 Toulouze Andre Cantilever frame for temporary working platform - has lifting eye on pivoted block which locks under wall hook supporting frame rail

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0758041A1 (en) * 1995-08-09 1997-02-12 Manuel Brito Working platform for different facades, CTB21
ES2126450A1 (en) * 1995-08-09 1999-03-16 Manuel Brito Working platform for different facades, CTB21
FR2929306A1 (en) * 2008-03-26 2009-10-02 Paul Marie Bernard V-shaped integrated lock hook for support of shuttering wall form in concrete building construction, has locking units occupying retracted position in hook and locking position and associated with overlocking units to manual unlock
FR2991361A1 (en) * 2012-06-05 2013-12-06 Lagneaux Marcel Sa Device for providing safety and protection against falls for blue-collar worker during building construction, has reception unit on frame, where frame has netting, and reception unit including supporting unit to support frame vertically
US20150023774A1 (en) * 2013-07-17 2015-01-22 John Seto Folding guard rail method and apparatus
US9617747B2 (en) * 2013-07-17 2017-04-11 John Seto Folding guard rail method and apparatus

Also Published As

Publication number Publication date
FR2600102B1 (en) 1992-03-20

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