FR2717523A1 - Device for holding coffering abutted between two stop ends - Google Patents

Device for holding coffering abutted between two stop ends Download PDF

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Publication number
FR2717523A1
FR2717523A1 FR9403131A FR9403131A FR2717523A1 FR 2717523 A1 FR2717523 A1 FR 2717523A1 FR 9403131 A FR9403131 A FR 9403131A FR 9403131 A FR9403131 A FR 9403131A FR 2717523 A1 FR2717523 A1 FR 2717523A1
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Prior art keywords
formwork
rod
stop
forms
auxiliary device
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Granted
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FR9403131A
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French (fr)
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FR2717523B1 (en
Inventor
Bard Jean
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Bouygues SA
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Bouygues SA
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Priority to FR9403131A priority Critical patent/FR2717523B1/en
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Publication of FR2717523B1 publication Critical patent/FR2717523B1/en
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Classifications

    • 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
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
    • E04G11/08—Forms, which are completely dismantled after setting of the concrete and re-built for next pouring
    • E04G11/085—End form panels for walls

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

Abstract

The device comprises a transverse threaded rod (40) mounted in supports fixed to the stop ends (10,20). Nuts (41,42) screwed onto the rod clamp the stop ends against the coffering (30). An auxiliary device (50) which anchors the transverse rod carries a movable stop which is supported against the coffering. The transverse rod is located outside two stop ends and is held in supports (12,22) which pivot on one or other stop end, between a retracted position and a projected position where they enable mounting of the rod. The auxiliary device has two anchoring legs (53,54) which fasten on the rod and which abut against the ends of the stop ends. The auxiliary device comprises a horizontal stop rod (51) which extends along an axis passing between the two stop ends. The stop is displaced along this axis and carries at one end a support piece (52) which abuts against the coffering.

Description

La présente invention concerne un dispositif pour maintenir un coffrage d'about entre deux banches. The present invention relates to a device for holding an end formwork between two forms.

La construction d'un ouvrage en béton, notamment d'un immeuble d'habitation, comporte la réalisation de murs verticaux en béton armé dénommés couramment "voiles".  The construction of a concrete structure, in particular of a residential building, involves the realization of vertical walls in reinforced concrete commonly called "sails".

Pour réaliser un voile, on coule du béton entre deux coffrages verticaux positionnés face à face et dénommés "banches".  To make a wall, concrete is poured between two vertical forms positioned face to face and called "formwork".

Le coffrage des extrémités verticales du voile, appelé coffrage d'about de voile", est réalisé au moyen de coffrages indépendants que l'on positionne entre les deux banches à proximité des bords latéraux d'extrémité desdites banches. The formwork of the vertical ends of the veil, called end cap formwork ", is produced by means of independent formwork which is positioned between the two forms near the lateral end edges of said forms.

L'ensemble des voiles d'un niveau d'un bâtiment étant réalisé au cours d'un cycle comprenant plusieurs jours, chaque jour du cycle, on coule des voiles souvent de longueur et d'épaisseur différentes. De ce fait, chaque jour du cycle il est nécessaire de repositionner les coffrages d'about de voile à l'intérieur des banches. All the sails of a level of a building being produced during a cycle comprising several days, each day of the cycle, sails are often cast of different length and thickness. Therefore, each day of the cycle it is necessary to reposition the end fittings of the veil inside the formwork.

Les coffrages d'about d'un voile sont positionnés à l'intérieur des banches et sont serrés entre les deux banches au moyen de tiges filetées qui traversent les deux banches perpendiculairement et sur lesquelles on vient visser des écrous de manière à les serrer contre lesdites banches. The end forms of a veil are positioned inside the formwork and are clamped between the two formwork by means of threaded rods which pass through the two formwork perpendicularly and on which nuts are screwed so as to tighten them against said formwork. formwork.

Toutefois, lorsque le béton est coulé à l'intérieur des banches, un gradient de pression s'exerce sur les coffrages d'about de voile et le serrage donné par l'intermédiaire des tiges est alors insuffisant pour compenser cette pression. En effet, la pression exercée par le béton sur les faces coffrantes des banches a tendance à allonger millimétriquement lesdites tiges filetées, ce qui combiné avec la vibration du béton peut entraîner un déplacement desdits coffrages d'about.However, when the concrete is poured inside the formwork, a pressure gradient is exerted on the end-of-wall formwork and the tightening given by means of the rods is then insufficient to compensate for this pressure. In fact, the pressure exerted by the concrete on the shuttering faces of the formwork tends to lengthen said threaded rods millimeter-wise, which combined with the vibration of the concrete can cause said end shuttering to move.

Pour maintenir en position les coffrages d'about à l'intérieur des banches serrées entre-elles, une solution déjà connue est de fixer par des boulons sur les extrémités des banches deux ou trois profilés horizontaux dans la hauteur desdites banches, et de positionner des butées en appui contre les coffrages d'about, entre ces derniers et les profilés. Ces profilés horizontaux sont couramment appelés barrettes d'about . Les butées mises en place contre les coffrages d'about peuvent être des éléments filetés ou le cas échéant des pièces de bois servant d'entretoises.  To keep the end forms in position inside the formwork which is tightly inter-connected, an already known solution is to fix two or three horizontal profiles in the height of said formwork with bolts on the ends of the formwork, and to position abutments bearing against the end forms, between the latter and the profiles. These horizontal sections are commonly called end bars. The stops placed against the end forms can be threaded elements or, if necessary, pieces of wood used as spacers.

L'inconvénient principal de cette solution classique est que la mise en place des profilés et des butées est longue et nécessite l'utilisation de boulons indépendants. The main drawback of this conventional solution is that the installation of the profiles and stops is long and requires the use of independent bolts.

La présente invention propose un dispositif qui permet un meilleur serrage des coffrages d'about de voile et la mise en place rapide des butées desdits coffrages d'about. The present invention provides a device which allows better tightening of the end fittings of the wall and the rapid installation of the stops of said end shutters.

Plus précisément, selon l'invention, pour maintenir un coffrage d'about placé entre deux banches parallèles, on munit lesdites banches d'un dispositif de serrage comprenant une tige filetée transversale montée dans des supports fixes aux banches et coopérant avec des écrous pour serrer les banches contre le coffrage d'about et on accroche sur ladite tige transversale un dispositif auxiliaire qui porte une butée mobile apte à venir en appui contre le coffrage d'about.  More specifically, according to the invention, to maintain an end formwork placed between two parallel formwork, said formwork is provided with a clamping device comprising a transverse threaded rod mounted in supports fixed to the formwork and cooperating with nuts to tighten the formwork against the end formwork and an auxiliary device is hung on said transverse rod which carries a movable stop capable of coming to bear against the end formwork.

Le dispositif auxiliaire peut ainsi être mis en place rapidement sur le coffrage. I1 s'adapte à tout type de voile et permet de régler avec précision au moyen de la tige filetée horizontale de butée la position de la pièce d'appui contre le coffrage d'about. The auxiliary device can thus be quickly installed on the formwork. I1 adapts to any type of wall and makes it possible to precisely adjust the position of the support piece against the end formwork using the horizontal threaded stop rod.

Un exemple de réalisation du dispositif de l'invention sera décrit ciaprès en référence aux figures du dessin joint sur lequel
- la figure 1 est une vue schématique partielle du coffrage selon l'invention;
- la figure 2 est une vue en coupe selon le plan C-C de la figure 1 ;
- la figure 3 est une vue en coupe selon le plan A-A de la figure 1.An exemplary embodiment of the device of the invention will be described below with reference to the figures of the accompanying drawing on which
- Figure 1 is a partial schematic view of the formwork according to the invention;
- Figure 2 is a sectional view along the plane CC of Figure 1;
- Figure 3 is a sectional view along the plane AA of Figure 1.

Sur la figure 1, on a représenté partiellement un coffrage de voile en béton qui comprend deux banches 10, 20, disposées face à face et un coffrage d'about de voile 30 placé entre les banches perpendiculairement à celles-ci. Le coffrage d'about de voile 30 est positionné à proximité des extrémités latérales respectives 11, 21 des deux banches 10, 20. Les deux banches 10, 20 sont serrées contre les côtés latéraux verticaux 31, 32 dudit coffrage d'about 30, de façon en soi connue, au moyen d'un dispositif de serrage qui comporte des tiges filetées de serrage transversales munies d'écrous, ici non représentées, qui traversent le coffrage. In Figure 1, there is partially shown a concrete wall formwork which comprises two formwork 10, 20, arranged face to face and a formwork end form 30 placed between the formwork perpendicular thereto. The wall end formwork 30 is positioned near the respective lateral ends 11, 21 of the two forms 10, 20. The two forms 10, 20 are clamped against the vertical lateral sides 31, 32 of said end form 30, in known manner, by means of a clamping device which comprises threaded transverse clamping rods provided with nuts, not shown here, which pass through the formwork.

Selon l'invention, on complète ce dispositif par un dispositif qui comprend:
A) au moins deux tiges filetées transversales 40 superposées, dont une seule est représentée, placées à l'extérieur desdites banches 10, 20 devant les extrémités 11, 21 du coffrage qui sont situées à proximité du coffrage d'about 30. Ces tiges sont montées dans des supports fixés aux banches. Plus particulièrement, comme le montre la figure 1, chacune des tiges filetées transversales 40 est tenue dans deux supports escamotables 12, 22, montés pivotants respectivement sur les structures des banches 10, 20. Chaque support 12, 22, disposé dans un plan horizontal par rapport au plan des banches, présente une forme en L, la jambe 12a, 22a du L comportant son extrémité montée pivotante autour d'un axe vertical 13, 23 rapporté sur les structures des banches 10,20, et le pied 12b, 22b du L comprenant un passage pour la tige filetée tranversale 40.According to the invention, this device is completed by a device which comprises:
A) at least two transverse threaded rods 40 superimposed, of which only one is shown, placed outside said formwork 10, 20 in front of the ends 11, 21 of the formwork which are located near the end formwork 30. These rods are mounted in supports fixed to the formwork. More particularly, as shown in FIG. 1, each of the transverse threaded rods 40 is held in two retractable supports 12, 22, pivotally mounted respectively on the structures of the forms 10, 20. Each support 12, 22, arranged in a horizontal plane by relative to the plane of the formwork, has an L shape, the leg 12a, 22a of the L having its end pivotally mounted around a vertical axis 13, 23 attached to the structures of the formwork 10,20, and the foot 12b, 22b of the L including a passage for the transverse threaded rod 40.

Chaque support 12, 22 est alors apte à prendre deux positions, une position sortie où la branche 12b, 22b du support est en saillie à l'arrière de la banche correspondante (Figure 1), pour la mise en place de la tige filetée tranversale et une position rentrée d'escamotage dans la structure de la banche lorsque le coffrage est destiné à être abouté à un autre coffrage du même type. Each support 12, 22 is then able to take two positions, an extended position where the branch 12b, 22b of the support protrudes behind the corresponding branch (Figure 1), for the establishment of the transverse threaded rod and a retracted retracted position in the structure of the formwork when the formwork is intended to be abutted to another formwork of the same type.

La tige filetée 40 tenue dans les deux supports 12, 22 est serrée au moyen de deux écrous 41, 42 vissés sur les extrémités de la tige et bloqués contre les supports. The threaded rod 40 held in the two supports 12, 22 is tightened by means of two nuts 41, 42 screwed onto the ends of the rod and locked against the supports.

B) un profilé horizontal 55, par exemple à section droite rectangulaire en forme de C, muni sur sa face supérieure 55a de deux pattes d'accrochage 53, 54 soudées qui permettent d'accrocher le profilé sur la tige filetée transversale extérieure 40, de telle sorte que l'axe longitudinal du profilé soit parallèle à cette dernière. Chaque patte d'accrochage 53,54 est disposée à proximité d'une extrémité du profilé et s'étend perpendiculairement à l'axe longitudinal du profilé en direction des banches 10, 20 (Figure 2). Chaque patte 53, 54 comporte une partie courbée vers l'intérieur 53a, en forme de crochet qui s'accroche sur la tige transversale extérieure filetée 40 et une extrémité libre 53b, légèrement courbée vers l'extérieur, apte à venir en appui contre l'extrémité latérale 21, 1 1 de la banche correspondante. Ainsi, lorsque les pattes 53, 54 sont accrochées sur la tige filetée extérieure 40, elles se bloquent contre les extrémités latérales 11, 21 des banches et maintiennent le profilé horizontal 55 en position horizontale avec son axe longitudinal Y parallèle à ladite tige transversale extérieure.  B) a horizontal profile 55, for example with a rectangular C-shaped cross section, provided on its upper face 55a with two hooked lugs 53, 54 which allow the profile to be hung on the external transverse threaded rod 40, such that the longitudinal axis of the profile is parallel to the latter. Each hooking lug 53, 54 is disposed near one end of the profile and extends perpendicular to the longitudinal axis of the profile in the direction of the panels 10, 20 (Figure 2). Each tab 53, 54 has an inwardly curved portion 53a, in the form of a hook which hooks onto the threaded outer transverse rod 40 and a free end 53b, slightly curved outward, capable of coming into abutment against the 'lateral end 21, 1 1 of the corresponding form. Thus, when the tabs 53, 54 are hung on the external threaded rod 40, they lock against the lateral ends 11, 21 of the forms and maintain the horizontal section 55 in a horizontal position with its longitudinal axis Y parallel to said external transverse rod.

C) Un tube 57 soudé sur la face supérieure 55a du profilé horizontal et disposé perpendiculairement à l'axe Y du profilé horizontal 55 en sorte que lorsque le profilé est accroché sur la tige transversale extérieure, l'axe du tube est confondu avec un axe longitudinal X perpendiculaire à l'axe Y, qui s'étend au milieu entre les deux banches. Dans le tube est soudé un écrou 58 disposé à une extrémité du tube 57. C) A tube 57 welded to the upper face 55a of the horizontal profile and disposed perpendicular to the Y axis of the horizontal profile 55 so that when the profile is hung on the external transverse rod, the axis of the tube is coincident with an axis longitudinal X perpendicular to the Y axis, which extends in the middle between the two forms. In the tube is welded a nut 58 placed at one end of the tube 57.

D) Une tige filetée de butée 51 disposée dans le tube 57 et vissée dans l'écrou 58. Cette tige filetée de butée comprend à une extrémité une poignée 56 qui permet de visser et de dévisser ladite tige afin de la déplacer selon l'axe longitudinal X. L'autre extrémité opposée de ladite tige filetée de butée 51 porte une butée, ici un tube 52. Ce tube 52 présente des dimensions appropriées pour venir en appui contre le coffrage d'about 30 lorsque la tige filetée de butée 51 est vissée vers l'espace entre les deux banches. D) A threaded stop rod 51 placed in the tube 57 and screwed into the nut 58. This threaded stop rod comprises at one end a handle 56 which allows the said rod to be screwed and unscrewed in order to move it along the axis. longitudinal X. The other opposite end of said threaded stop rod 51 carries a stop, here a tube 52. This tube 52 has dimensions suitable for bearing against the end formwork 30 when the threaded stop rod 51 is screwed to the space between the two forms.

La longueur du profilé 55 est choisie pour que le dispositif auxiliaire puisse s'utiliser pour toute épaisseur courante de voile.  The length of the profile 55 is chosen so that the auxiliary device can be used for any common thickness of sail.

Claims (6)

REVENDICATIONS 1. Dispositif pour maintenir un coffrage d'about (30) entre deux banches (10,20) de coffrage parallèles pour la coulée d'un voile en béton, caractérisé en ce qu'il comprend une tige filetée transversale (40) montée dans des supports fixés aux banches et coopérant avec des écrous (41, 42) pour serrer les banches (10, 20) contre le coffrage d'about (30) et un dispositif auxiliaire (50) qui s'accroche à ladite tige transversale (40) et qui porte une butée mobile à translation (51, 52) apte à venir en appui contre le coffrage d'about (30). 1. Device for holding an end formwork (30) between two parallel formwork formwork (10,20) for casting a concrete veil, characterized in that it comprises a transverse threaded rod (40) mounted in supports fixed to the forms and cooperating with nuts (41, 42) to tighten the forms (10, 20) against the end formwork (30) and an auxiliary device (50) which hooks to said transverse rod (40 ) and which carries a movable stop in translation (51, 52) capable of coming to bear against the end formwork (30). 2. Dispositif selon la revendication 1, caractérisé en ce que la tige transversale (40) est disposée à l'extérieur desdites banches (10, 20), tenue dans des supports (12, 22) montés pivotants respectivement sur l'une et l'autre banches (10,20), entre une position d'escamotage et une position de sortie où ils sont en saillie et permettent le montage de la tige. 2. Device according to claim 1, characterized in that the transverse rod (40) is disposed outside of said forms (10, 20), held in supports (12, 22) pivotally mounted on one and l 'other forms (10,20), between a retracting position and an exit position where they protrude and allow the mounting of the rod. 3. Dispositif selon l'une des revendications 1 ou 2, caractérisé en ce que le dispositif auxiliaire (50) comporte deux pattes d'accrochage (53, 54) qui s'accrochent sur ladite tige transversale et qui butent contre les extrémités des deux banches (10, 20). 3. Device according to one of claims 1 or 2, characterized in that the auxiliary device (50) comprises two hooking lugs (53, 54) which hook on said transverse rod and which abut against the ends of the two forms (10, 20). 4. Dispositif selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le dispositif auxiliaire comprend une tige horizontale de butée (51) qui s'étend suivant un axe passant entre les deux banches (10, 20), ladite tige de butée (51) étant apte à se déplacer suivant cet axe et portant à une extrémité une pièce d'appui (52) destinée à venir en butée contre ledit coffrage d'about (30). 4. Device according to any one of claims 1 to 3, characterized in that the auxiliary device comprises a horizontal stop rod (51) which extends along an axis passing between the two forms (10, 20), said rod stop (51) being able to move along this axis and carrying at one end a support piece (52) intended to abut against said end formwork (30). 5. Dispositif selon l'une des revendications 3 et 4 dans son rattachement à la revendication 2, caractérisé en ce que le dispositif auxiliaire (50) comprend un profilé horizontal (55) qui porte sur sa surface supérieure (5 Sa) lesdites pattes d'accrochage (53,54) ainsi qu'un tube (57) dans lequel passe ladite tige horizontale de butée (51), chaque patte étant positionnée à proximité d'une extrémité du profilé et ledit tube étant placé à mi-distance entre les deux pattes. 5. Device according to one of claims 3 and 4 in its attachment to claim 2, characterized in that the auxiliary device (50) comprises a horizontal profile (55) which carries on its upper surface (5 Sa) said legs d 'hooking (53,54) and a tube (57) through which passes said horizontal stop rod (51), each tab being positioned near one end of the profile and said tube being placed midway between the two legs. 6. Les coffrages équipés d'un dispositif selon l'une des revendications 1 à 5.  6. Formwork fitted with a device according to one of claims 1 to 5.
FR9403131A 1994-03-17 1994-03-17 Device for holding an end formwork between two parallel formwork formwork for pouring a concrete veil and formwork thus equipped. Expired - Lifetime FR2717523B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9403131A FR2717523B1 (en) 1994-03-17 1994-03-17 Device for holding an end formwork between two parallel formwork formwork for pouring a concrete veil and formwork thus equipped.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9403131A FR2717523B1 (en) 1994-03-17 1994-03-17 Device for holding an end formwork between two parallel formwork formwork for pouring a concrete veil and formwork thus equipped.

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FR2717523A1 true FR2717523A1 (en) 1995-09-22
FR2717523B1 FR2717523B1 (en) 1996-06-07

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FR9403131A Expired - Lifetime FR2717523B1 (en) 1994-03-17 1994-03-17 Device for holding an end formwork between two parallel formwork formwork for pouring a concrete veil and formwork thus equipped.

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2913998A1 (en) * 2007-03-20 2008-09-26 Hussor Soc Par Actions Simplif EXTERIOR ROD HOLDING DEVICE
FR2935415A1 (en) * 2008-09-01 2010-03-05 Hussor External rod maintaining device for forming e.g. shear wall in building field, has bearing that is assembled and maintained in non-usage position by cooperating with eyelet of socket, where bearing receives and maintains screwed spindle
FR2976606A1 (en) * 2011-06-17 2012-12-21 Sateco Sa Holding device for holding shuttering panel that is used to shutter or shear walls of building, has support body comprising upper housing in which clamp rod is mounted in removable manner, where rod is supported against form panel

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1589090A (en) * 1968-07-19 1970-03-23
FR2044140A5 (en) * 1969-05-09 1971-02-19 Dubois De Montreynaud B
FR2169413A1 (en) * 1972-01-28 1973-09-07 Maier Josef
FR2527254A1 (en) * 1982-05-19 1983-11-25 Ricard Jacques Device for assembling shuttering panels - comprises pivoting linkages on adjacent panels which are interconnected by traction device
FR2615887A1 (en) * 1987-05-27 1988-12-02 Chiappalone Luigi Rapid wedging system for formwork fittings of walls cast using formwork, which can be used for various wall lengths and thicknesses
CH677256A5 (en) * 1988-05-05 1991-04-30 A & B Amberg Geb Formwork end section positioning apparatus - has horizontal cross plate connected by pins to end brackets and fitted with bearing for positioning screw

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1589090A (en) * 1968-07-19 1970-03-23
FR2044140A5 (en) * 1969-05-09 1971-02-19 Dubois De Montreynaud B
FR2169413A1 (en) * 1972-01-28 1973-09-07 Maier Josef
FR2527254A1 (en) * 1982-05-19 1983-11-25 Ricard Jacques Device for assembling shuttering panels - comprises pivoting linkages on adjacent panels which are interconnected by traction device
FR2615887A1 (en) * 1987-05-27 1988-12-02 Chiappalone Luigi Rapid wedging system for formwork fittings of walls cast using formwork, which can be used for various wall lengths and thicknesses
CH677256A5 (en) * 1988-05-05 1991-04-30 A & B Amberg Geb Formwork end section positioning apparatus - has horizontal cross plate connected by pins to end brackets and fitted with bearing for positioning screw

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2913998A1 (en) * 2007-03-20 2008-09-26 Hussor Soc Par Actions Simplif EXTERIOR ROD HOLDING DEVICE
EP1975337A1 (en) * 2007-03-20 2008-10-01 Hussor (Société par Actions Simplifiée) Device for holding the ends of two form panels
FR2935415A1 (en) * 2008-09-01 2010-03-05 Hussor External rod maintaining device for forming e.g. shear wall in building field, has bearing that is assembled and maintained in non-usage position by cooperating with eyelet of socket, where bearing receives and maintains screwed spindle
FR2976606A1 (en) * 2011-06-17 2012-12-21 Sateco Sa Holding device for holding shuttering panel that is used to shutter or shear walls of building, has support body comprising upper housing in which clamp rod is mounted in removable manner, where rod is supported against form panel

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FR2717523B1 (en) 1996-06-07

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