EP0796949B1 - Hinged, closed or grating-like, manhole cover and its supporting frame - Google Patents

Hinged, closed or grating-like, manhole cover and its supporting frame Download PDF

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Publication number
EP0796949B1
EP0796949B1 EP96470005A EP96470005A EP0796949B1 EP 0796949 B1 EP0796949 B1 EP 0796949B1 EP 96470005 A EP96470005 A EP 96470005A EP 96470005 A EP96470005 A EP 96470005A EP 0796949 B1 EP0796949 B1 EP 0796949B1
Authority
EP
European Patent Office
Prior art keywords
frame
cover
pivot
tab
supporting
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.)
Expired - Lifetime
Application number
EP96470005A
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German (de)
French (fr)
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EP0796949A1 (en
Inventor
Jean-Claude Hauer
Françis Berthon
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.)
Saint Gobain PAM SA
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Saint Gobain PAM SA
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
Priority to PT96470005T priority Critical patent/PT796949E/en
Priority to EP96470005A priority patent/EP0796949B1/en
Priority to ES96470005T priority patent/ES2158268T3/en
Priority to DE69613342T priority patent/DE69613342T2/en
Priority to AT96470005T priority patent/ATE202174T1/en
Application filed by Saint Gobain PAM SA filed Critical Saint Gobain PAM SA
Priority to DK96470005T priority patent/DK0796949T3/en
Publication of EP0796949A1 publication Critical patent/EP0796949A1/en
Application granted granted Critical
Publication of EP0796949B1 publication Critical patent/EP0796949B1/en
Priority to GR20010400777T priority patent/GR3036043T3/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/14—Covers for manholes or the like; Frames for covers

Definitions

  • the present invention relates to a device hinged road system comprising a cover of the type grid or buffer and a support frame, this frame being provided at least one housing open upwards, within conditions of installation of the frame, and leading to inside the frame, each housing being intended to cooperate with a pivot with which the cover is provided and which protrudes from the periphery of said cover, allowing thus the tilting of the cover relative to the frame by pivoting around the hinged device.
  • the invention applies in particular to devices for closing of inspection or inspection chimneys water network such as manholes or sidewalk looks, or to crowning devices manholes such as street gates.
  • the cover can easily be removed from its support frame when the latter is sealed in the ground, in particular by simple lifting of the cover when it performs a 90 ° angle to the closed position.
  • the object of the present invention is therefore to remedy the aforementioned drawbacks, and more particularly to economically anti-theft security of the cover when the frame is sealed in the ground, and this with parts that are easy to install work that does not require the use of a locking reported.
  • the invention relates to a device road network of the aforementioned type, characterized in that the housing is in the form of a recess cut in the thickness of the frame, this notch being defined by two side walls connecting to a bottom wall and which end, upwards, by stop means, projecting horizontally outward from the frame, said stop means being adapted to cover the ends side of the pivot when the cover is in place on the frame, said bottom wall extending outward of the frame by a lug serving to support the pivot, mounting or removing the cover by passing the pivot of the cover through the open space defined by the leg and the abutment means of the frame, this open space is located below the upper face of the frame and opening to the outside of it.
  • the road system 1 shown in Figure 5 is a sidewalk look made of two cast iron pieces ductile, i.e. a support frame 2 and a pad shutter 3 forming a cover.
  • Frame 2 is intended to be sealed in the pavement covering 4 at the upper end of a cylindrical chimney (not shown) for access to a network sanitation.
  • the buffer has plan a generally circular shape. He understands essentially a 5 5 plane and horizontal upper veil under which protrudes a stiffening rib 6 as well as a vertical annular rim 7 located nearby of the periphery of the buffer 3.
  • the upper face 8 of this veil 5 is equipped with non-slip patterns (not shown).
  • the buffer 3 comprises a protruding pivot 9 having the general shape of a T consisting of a pivoting shaft 10 extending perpendicular to a radial shaft 11, said shaft 11 connecting the pivot shaft 10 to the web 5 and to the flange annular 7 of the buffer.
  • the pivot shaft 10 is located, considering Figure 3, at a level lower than the upper face 8 buffer. It has a generally cylindrical shape, the upper part (upwards when considering figure 3) has a longitudinal flat 12, parallel to the faces main buffer, and the bottom of which is provided with two semi-cylindrical recesses 13a and 13b arranged at the lateral ends of the shaft 10, said lateral ends thus forming lateral tenons 14a and 14b.
  • the pivot shaft 10 therefore has a central part 15 approximately cylindrical of which the thickness E is greater than the thickness e of the studs side 14a, 14b which surround it.
  • buffer 3 3 has a operating bar 16 of generally rectangular shape which extends the upper veil 5 outwards.
  • the frame 2 comprises a vertical skirt consisting of a cylindrical skirt upper 17 and a lower cylindrical skirt 18 of which the diameter is less than that of the upper skirt 17, these two vertical skirts 17, 18 being coaxial and connected between them by a frustoconical shoulder 19.
  • the skirt upper 17 extends at the top and outwards of the frame by a horizontal upper plate 20, the outer outline is square.
  • Frame 2 also has a collar inner ring 22 which serves as a support for the buffer 3 when it rests on the frame.
  • This collar 22 is located approximately opposite shoulder 19 with which it defines a circular groove 23 in the bottom of which is housed the annular rim vertical 7 of the buffer. This provision is particularly advantageous because it makes it possible to obtain the odor tightness of this device 1, and this by filling the groove 23 with an appropriate material such as sand or water for example.
  • the frame 2 has a housing 24 open upwards and opening towards inside the frame, this housing 24 being adapted for receive with play the pivot 9 of the buffer 3, thus forming with pivot 9 a hinged device which allows the tilting of the buffer 3 relative to the frame 2.
  • the housing 24 is centered on the median of one of the sides of the delimiting square the outer contour of the upper plate 20 of the frame.
  • this housing 24 is present in the form of a notch in the upper part of the frame thickness.
  • this notch is practiced in the upper plate 20 and in the upper skirt 17 and presents, seen from above, a generally rectangular shape. It is thus delimited by two side walls 25a and 25b whose facing faces are flat and substantially vertical, these two walls connecting downwards by a bottom wall 26 with a flat and horizontal upper face belonging to the upper skirt 17.
  • the side walls 25a and 25b have, in section in a vertical plane perpendicular to the edge of the frame in which the notch, the general shape, is provided of an inverted L whose vertical branch came from material with the upper skirt 17 of the frame 2 and the horizontal branch came out of the box horizontal top 20.
  • the horizontal branches which frame the notch formed in the frame thus defining two stops horizontal retaining 27a and 27b under which come imprison the respective tenons 14a and 14b of the pivot 9 of buffer 3 when pivot 9 9 is in place in its housing 24 of the frame.
  • the buffer 3 is retained on frame 2 and cannot be separated from it accidentally and inadvertently when in closed position; on the other hand, the stops of retainer 27a and 27b do not prevent the buffer from tilting to open the manhole 1.
  • the bottom wall 26 extends towards the outside of the skirt 17, by a substantially horizontal tab 28 coming of material with the skirt 17 of the frame and which, with reference in Figure 2, extends between the side walls 25a and 25b of the notch.
  • This tab 28 serves to support the pivot 9 during the tilting of the buffer 3 3 during opening or closing movements.
  • the tab 28 is curved upwards at its free end located opposite the skirt 17, thus defining a curved section 29, the curvature is adapted to match the cylindrical shape of the central part 15 of the pivot shaft 10 of the pivot 9.
  • This curved section 29 thus constitutes a rim which serves as a bearing and guiding surface for the pivot 9 during the articulation of the tampon; it prevents in particular the pivot to slide out of the frame when closing the buffer.
  • each of the two walls 25a, 25b respectively, which delimit the notch of the housing 24 is also extended towards the outside of the skirt 17 by a support rib 30a, respectively 30b, integral with said skirt 17.
  • the ribs 30a, respectively 30b, are connected towards the high at the overhanging stops 27a, respectively 27b, and down to tab 28.
  • these ribs 30a and 30b respectively come opposite the studs 14a and 14b of pivot 9, of which they limit the play in the housing 24 of the frame; thus, when the pad 3, they provide rotational guiding of the pad, and therefore allow the correct positioning of this one in the rebate of the frame.
  • Frame 2 also presents, opposite the housing 24 of pivot 9, a cavity 31 intended to receive the bar 16 for operating the buffer 3.
  • This cavity 31 is open upwards and opens out inward of the frame; she is spared in the thickness of the plate 20 and of the upper skirt 17 of the frame 2.
  • the buffer is placed on the frame before sealing it in the ground.
  • the pad 3 is turned over flat, that is to say in a position where the upper veil 5 of the pad makes an angle of 180 ° to the position shown in Figure 5, and place it at side of the edge of the frame where the housing 24 is located, the pivot 9 being oriented towards this housing.
  • the sizing of the parts is such that pivot 9 cannot be inserted into its associated housing 24, or extract thereof, only when the pad is tilted at an angle of about 180 ° to its closed position.
  • the level difference H between the upper face 33 of the curved section 29 and the underside of the stops 27a and 27b is greater than the thickness e of the studs 14a and 14b, but less than the width 1 of these tenons; this particular arrangement allows the passage of the pivot 9 to through open space 32 only when the tampon is tilted 180 °, and prohibits the passage for any another inclination of the buffer.
  • the upper face 8 8 of the pad is located below the horizontal plate 20 of the frame.
  • buffer 3 can be open at an angle of about 150 ° to the position closing. In this maximum opening position, the region of the upper face 21 of the tampon situated at proximity of pivot 9 comes into contact with ground level 4, consequently prohibiting any opening beyond this limit.
  • This road system 1 also offers the advantage to be easy to implement, the frame 2 and the buffer 3 being moldable without core.
  • the embodiment which has just been described relates to ductile iron parts but may be applied more generally to parts metallic.
  • This hinged device can also be used with a cover whose general shape is different circular, especially for grids or buffers polygonal shape.
  • a cover whose general shape is different circular, especially for grids or buffers polygonal shape.
  • this operation can then be performed for different inclinations of the buffer by report to the frame.
  • To extract the buffer when the road system is sealed in the ground it will be again necessary either to lift the assembly above the ground level, either to break the coating material of the soil around the hinge, until it can translate the pivot shaft outwards outside of its frame housing.
  • the layout particular of the hinge which makes it difficult to remove the buffer protects it against acts of vandalism.

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Traffic Control Systems (AREA)
  • Sewage (AREA)
  • Closures For Containers (AREA)
  • Vehicle Step Arrangements And Article Storage (AREA)
  • Hinges (AREA)
  • Body Structure For Vehicles (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)

Abstract

The device has a solid cover or a grid (3) supported by a frame (2). An axis (9) extending from the cover fits into a housing in the frame. A groove in the frame forms the housing. The two side walls (25a,25b) are joined by a base (26). There are stops (27a,27b) at the top which extend horizontally towards the outer edge of the frame. The stops cover the side edges (14a,14b) of the axis (9) when the cover is closed. The base extends towards the edge of the frame and has a lug (28) which supports the axis. The cover is opened or closed by moving the axis through the open space (32) formed by the lug and the stops. This space is below the upper edge (21) of the frame and opens towards the outside of the frame.

Description

La présente invention est relative à un dispositif de voirie à charnière comprenant un couvercle du type grille ou tampon et un cadre support, ce cadre étant muni d'au moins un logement ouvert vers le haut, dans les conditions d'installation du cadre, et débouchant vers l'intérieur du cadre, chaque logement étant destiné à coopérer avec un pivot dont est muni le couvercle et qui fait saillie sur la périphérie dudit couvercle, autorisant ainsi le basculement du couvercle par rapport au cadre par pivotement autour du dispositif à charnière.The present invention relates to a device hinged road system comprising a cover of the type grid or buffer and a support frame, this frame being provided at least one housing open upwards, within conditions of installation of the frame, and leading to inside the frame, each housing being intended to cooperate with a pivot with which the cover is provided and which protrudes from the periphery of said cover, allowing thus the tilting of the cover relative to the frame by pivoting around the hinged device.

L'invention s'applique notamment aux dispositifs de fermeture de cheminées de visite ou d'inspection d'un réseau d'eau tels que les regards de chaussée ou les regards de trottoirs, ou aux dispositifs de couronnement de bouches d'égout tels que les grilles de voirie.The invention applies in particular to devices for closing of inspection or inspection chimneys water network such as manholes or sidewalk looks, or to crowning devices manholes such as street gates.

Dans les dispositifs de voirie connus de ce type, le couvercle peut aisément être extrait de son cadre support lorsque ce dernier est scellé dans le sol, notamment par simple soulèvement du couvercle lorsque celui-ci réalise un angle de 90° par rapport à la position de fermeture.In known road systems of this type, the cover can easily be removed from its support frame when the latter is sealed in the ground, in particular by simple lifting of the cover when it performs a 90 ° angle to the closed position.

Il en résulte alors un risque non négligeable de vol du couvercle par des individus mal intentionnés. Pour pallier à de tels actes de vandalisme, il a été proposé de munir le couvercle d'un organe de verrouillage, tel que par exemple un boulon ou un doigt rotatif venant en butée sous une collerette du cadre, cet organe ne pouvant être manoeuvré que par un outil ou une clé spécifique. Une telle solution présente cependant l'inconvénient de ne pas être facile à mettre en oeuvre et d'être peu économique. De plus, le recours à un outil particulier pour déverrouiller l'organe de verrouillage avant ouverture du couvercle s'avère peu pratique pour l'utilisateur.This results in a significant risk of theft. of the cover by ill-intentioned individuals. For to mitigate such acts of vandalism, it was proposed to provide the cover with a locking member, such as by example a bolt or a rotary finger abutting under a frame flange, this member cannot be operated only by a specific tool or wrench. Such a solution has the disadvantage of not being easy to implement and inexpensive. Of plus, the use of a particular tool to unlock the locking member before opening the cover is inconvenient for the user.

La présente invention s'est donc fixé pour but de remédier aux inconvénients précités, et plus particulièrement d'assurer de manière économique la sécurité antivol du couvercle lorsque le cadre est scellé dans le sol, et ceci avec des pièces faciles à mettre en oeuvre qui ne nécessitent pas le recours à un organe de verrouillage rapporté.The object of the present invention is therefore to remedy the aforementioned drawbacks, and more particularly to economically anti-theft security of the cover when the frame is sealed in the ground, and this with parts that are easy to install work that does not require the use of a locking reported.

A cet effet, l'invention a pour objet un dispositif de voirie du type précité, caractérisé en ce que le logement se présente sous la forme d'une échancrure ménagée dans l'épaisseur du cadre, cette échancrure étant définie par deux parois latérales se raccordant à une paroi de fond et qui se terminent, vers le haut, par des moyens de butée, en saillie horizontale vers l'extérieur du cadre, lesdits moyens de butée étant adaptés pour recouvrir les extrémités latérales du pivot lorsque le couvercle est en place sur le cadre, ladite paroi de fond se prolongeant vers l'extérieur du cadre par une patte servant d'appui au pivot, le montage ou démontage du couvercle s'effectuant par passage du pivot du couvercle à travers l'espace ouvert délimité par la patte et les moyens de butée du cadre, cet espace ouvert se situant en-dessous de la face supérieure du cadre et débouchant vers l'extérieur de celui-ci.To this end, the invention relates to a device road network of the aforementioned type, characterized in that the housing is in the form of a recess cut in the thickness of the frame, this notch being defined by two side walls connecting to a bottom wall and which end, upwards, by stop means, projecting horizontally outward from the frame, said stop means being adapted to cover the ends side of the pivot when the cover is in place on the frame, said bottom wall extending outward of the frame by a lug serving to support the pivot, mounting or removing the cover by passing the pivot of the cover through the open space defined by the leg and the abutment means of the frame, this open space is located below the upper face of the frame and opening to the outside of it.

Le dispositif de voirie suivant l'invention peut comporter une ou plusieurs des caractéristiques suivantes :

  • les parois latérales qui bordent l'échancrure se prolongent, vers l'extérieur du cadre, par des nervures d'appui et de guidage du pivot qui assurent un positionnement correct du couvercle sur son cadre support lors de la fermeture du couvercle ;
  • la patte d'appui s'étend horizontalement entre les deux parois latérales de l'échancrure et se termine, à son extrémité libre, par un rebord en saillie vers le sommet du cadre ;
  • le pivot présente un arbre de pivotement dimensionné de manière telle que l'introduction du pivot dans son logement associé du cadre est uniquement possible lorsque les faces principales du couvercle sont inclinées d'un angle de 180° par rapport à la position de fermeture de ce couvercle ;
  • le rebord extérieur de la patte constitue une section incurvée qui, lors de l'articulation du couvercle sur son cadre, coopère avec une section de forme générale cylindrique correspondante du pivot ;
  • après scellement dans le sol, la position d'ouverture maximale du couvercle est une position d'ouverture à environ 150° par rapport à la position de fermeture ;
  • en position de fermeture, le couvercle repose sur le fond d'une gorge ménagée à la périphérie d'une collerette d'appui située sur le pourtour intérieur du cadre.
The road system according to the invention may include one or more of the following characteristics:
  • the side walls which border the notch extend, towards the outside of the frame, by ribs for supporting and guiding the pivot which ensure correct positioning of the cover on its support frame when the cover is closed;
  • the support tab extends horizontally between the two side walls of the notch and ends, at its free end, by a rim projecting towards the top of the frame;
  • the pivot has a pivot shaft dimensioned in such a way that the introduction of the pivot into its associated housing of the frame is only possible when the main faces of the cover are inclined at an angle of 180 ° relative to the closed position of this cover;
  • the outer edge of the tab constitutes a curved section which, when the cover is articulated on its frame, cooperates with a section of generally corresponding cylindrical shape of the pivot;
  • after sealing in the ground, the maximum opening position of the cover is an opening position at approximately 150 ° relative to the closed position;
  • in the closed position, the cover rests on the bottom of a groove formed at the periphery of a support flange situated on the inner periphery of the frame.

Un exemple de réalisation de l'invention va maintenant être décrit en regard des dessins annexés, sur lesquels :

  • la figure 1 représente, en plan, un couvercle d'un dispositif de voirie conforme à l'invention ;
  • la figure 2 est une vue en plan du cadre support associé au couvercle de la figure 1 ;
  • la figure 3 est une vue prise en coupe suivant la ligne III-III du couvercle de la figure 1 ;
  • la figure 4 est une vue prise en coupe suivant la ligne IV-IV du cadre de la figure 2 ;
  • la figure 5 est une vue en coupe du couvercle de la figure 3 en position de fermeture sur la cadre de la figure 4 ;
  • la figure 6 est une représentation schématique partielle, en perspective, du couvercle et du cadre avant assemblage.
An embodiment of the invention will now be described with reference to the accompanying drawings, in which:
  • Figure 1 shows, in plan, a cover of a road device according to the invention;
  • Figure 2 is a plan view of the support frame associated with the cover of Figure 1;
  • Figure 3 is a sectional view taken along line III-III of the cover of Figure 1;
  • Figure 4 is a sectional view taken along line IV-IV of the frame of Figure 2;
  • Figure 5 is a sectional view of the cover of Figure 3 in the closed position on the frame of Figure 4;
  • Figure 6 is a partial schematic representation, in perspective, of the cover and the frame before assembly.

Le dispositif de voirie 1 représenté à la figure 5 est un regard de trottoir constitué de deux pièces en fonte ductile, à savoir un cadre support 2 et un tampon obturateur 3 formant couvercle. The road system 1 shown in Figure 5 is a sidewalk look made of two cast iron pieces ductile, i.e. a support frame 2 and a pad shutter 3 forming a cover.

Le cadre 2 est destiné à être scellé dans le revêtement 4 du trottoir à l'extrémité supérieure d'une cheminée cylindrique (non représentée) d'accès à un réseau d'assainissement.Frame 2 is intended to be sealed in the pavement covering 4 at the upper end of a cylindrical chimney (not shown) for access to a network sanitation.

Comme on le voit sur la figure 1, le tampon a en plan une forme générale circulaire. Il comprend essentiellement un voile supérieur 5 5 plan et horizontal sous lequel fait saillie un nervurage de rigidification 6 ainsi qu'un rebord annulaire vertical 7 situé à proximité de la périphérie du tampon 3.As seen in Figure 1, the buffer has plan a generally circular shape. He understands essentially a 5 5 plane and horizontal upper veil under which protrudes a stiffening rib 6 as well as a vertical annular rim 7 located nearby of the periphery of the buffer 3.

La face supérieure 8 de ce voile 5 est équipée de motifs antidérapants (non représentés).The upper face 8 of this veil 5 is equipped with non-slip patterns (not shown).

En un point de sa périphérie, le tampon 3 comporte un pivot 9 saillant ayant la forme générale d'un T constitué d'un arbre de pivotement 10 s'étendant perpendiculairement à une hampe 11 radiale, ladite hampe 11 reliant l'arbre de pivotement 10 au voile 5 et au rebord annulaire 7 du tampon.At a point on its periphery, the buffer 3 comprises a protruding pivot 9 having the general shape of a T consisting of a pivoting shaft 10 extending perpendicular to a radial shaft 11, said shaft 11 connecting the pivot shaft 10 to the web 5 and to the flange annular 7 of the buffer.

L'arbre de pivotement 10 est situé, en considérant la figure 3, à un niveau plus bas que la face supérieure 8 du tampon. Il a une forme générale cylindrique dont la partie supérieure (vers le haut en considérant la figure 3) présente un plat 12 longitudinal, parallèle aux faces principales du tampon, et dont la partie inférieure est munie de deux évidements 13a et 13b semi-cylindriques disposés aux extrémités latérales de l'arbre 10, lesdites extrémités latérales formant ainsi des tenons latéraux 14a et 14b.The pivot shaft 10 is located, considering Figure 3, at a level lower than the upper face 8 buffer. It has a generally cylindrical shape, the upper part (upwards when considering figure 3) has a longitudinal flat 12, parallel to the faces main buffer, and the bottom of which is provided with two semi-cylindrical recesses 13a and 13b arranged at the lateral ends of the shaft 10, said lateral ends thus forming lateral tenons 14a and 14b.

L'arbre de pivotement 10 présente par conséquent une partie centrale 15 approximativement cylindrique dont l'épaisseur E est supérieure à l'épaisseur e des tenons latéraux 14a, 14b qui l'encadrent.The pivot shaft 10 therefore has a central part 15 approximately cylindrical of which the thickness E is greater than the thickness e of the studs side 14a, 14b which surround it.

A l'opposé du pivot 9, le tampon 3 3 présente une barrette de manoeuvre 16 de forme générale rectangulaire qui prolonge le voile supérieur 5 vers l'extérieur.Opposite pivot 9, buffer 3 3 has a operating bar 16 of generally rectangular shape which extends the upper veil 5 outwards.

En considérant la figure 2, le cadre 2 comprend une jupe verticale constituée d'une jupe cylindrique supérieure 17 et d'une jupe cylindrique inférieure 18 dont le diamètre est inférieur à celui de la jupe supérieure 17, ces deux jupes verticales 17, 18 étant coaxiales et reliées entre-elles par un épaulement tronconique 19. La jupe supérieure 17 se prolonge à son sommet et vers l'extérieur du cadre par un plateau supérieur horizontal 20 dont le contour extérieur est carré.Considering FIG. 2, the frame 2 comprises a vertical skirt consisting of a cylindrical skirt upper 17 and a lower cylindrical skirt 18 of which the diameter is less than that of the upper skirt 17, these two vertical skirts 17, 18 being coaxial and connected between them by a frustoconical shoulder 19. The skirt upper 17 extends at the top and outwards of the frame by a horizontal upper plate 20, the outer outline is square.

Comme le montre la figure 5, lorsque le dispositif de voirie 1 est scellé dans le revêtement 4 du trottoir, la face plane supérieure 21 de ce plateau 20 affleure la surface du sol et se situe dans un même plan horizontal que la face supérieure 8 du voile 5 du tampon.As shown in Figure 5, when the device road 1 is sealed in the pavement covering 4, the upper flat face 21 of this plate 20 is flush with the ground surface and lies in the same horizontal plane as the upper face 8 of the web 5 of the pad.

Le cadre 2 présente également une collerette annulaire intérieure 22 qui sert d'appui au tampon 3 lorsque celui-ci repose sur le cadre. Cette collerette 22 se situe approximativement en regard de l'épaulement 19 avec lequel elle définit une gorge circulaire 23 dans le fond de laquelle vient se loger le rebord annulaire vertical 7 du tampon. Cette disposition est particulièrement avantageuse car elle permet d'obtenir l'étanchéité aux odeurs de ce dispositif 1, et ceci par remplissage de la gorge 23 à l'aide d'un matériau approprié tel que du sable ou de l'eau par exemple.Frame 2 also has a collar inner ring 22 which serves as a support for the buffer 3 when it rests on the frame. This collar 22 is located approximately opposite shoulder 19 with which it defines a circular groove 23 in the bottom of which is housed the annular rim vertical 7 of the buffer. This provision is particularly advantageous because it makes it possible to obtain the odor tightness of this device 1, and this by filling the groove 23 with an appropriate material such as sand or water for example.

En un point de sa périphérie, le cadre 2 présente un logement 24 ouvert vers le haut et débouchant vers l'intérieur du cadre, ce logement 24 étant adapté pour recevoir avec jeu le pivot 9 du tampon 3, formant ainsi avec le pivot 9 un dispositif à charnière qui autorise le basculement du tampon 3 par rapport au cadre 2.At a point on its periphery, the frame 2 has a housing 24 open upwards and opening towards inside the frame, this housing 24 being adapted for receive with play the pivot 9 of the buffer 3, thus forming with pivot 9 a hinged device which allows the tilting of the buffer 3 relative to the frame 2.

Comme on le voit à la figure 2, le logement 24 est centré sur la médiane de l'un des côtés du carré délimitant le contour extérieur du plateau supérieur 20 du cadre.As seen in Figure 2, the housing 24 is centered on the median of one of the sides of the delimiting square the outer contour of the upper plate 20 of the frame.

En considérant la figure 6, ce logement 24 se présente sous la forme d'une échancrure ménagée dans la partie supérieure de l'épaisseur du cadre. Dans le mode de réalisation décrit, cette échancrure est pratiquée dans le plateau supérieur 20 et dans la jupe supérieure 17 et présente, vue de dessus, une forme générale rectangulaire. Elle est ainsi délimitée par deux parois latérales 25a et 25b dont les faces en regard sont planes et sensiblement verticales, ces deux parois se raccordant vers le bas par une paroi de fond 26 à face supérieure plane et horizontale appartenant à la jupe supérieure 17.Considering FIG. 6, this housing 24 is present in the form of a notch in the upper part of the frame thickness. In the mode of realization described, this notch is practiced in the upper plate 20 and in the upper skirt 17 and presents, seen from above, a generally rectangular shape. It is thus delimited by two side walls 25a and 25b whose facing faces are flat and substantially vertical, these two walls connecting downwards by a bottom wall 26 with a flat and horizontal upper face belonging to the upper skirt 17.

Les parois latérales 25a et 25b ont, en coupe suivant un plan vertical perpendiculaire à la rive du cadre dans laquelle est ménagée l'échancrure, la forme générale d'un L renversé dont la branche verticale est venue de matière avec la jupe supérieure 17 du cadre 2 et dont la branche horizontale est venue de matière avec le plateau supérieur horizontal 20.The side walls 25a and 25b have, in section in a vertical plane perpendicular to the edge of the frame in which the notch, the general shape, is provided of an inverted L whose vertical branch came from material with the upper skirt 17 of the frame 2 and the horizontal branch came out of the box horizontal top 20.

Les branches horizontales qui encadrent l'échancrure ménagée dans le cadre définissant ainsi deux butées horizontales de retenue 27a et 27b sous lesquelles viennent s'emprisonner les tenons respectifs 14a et 14b du pivot 9 du tampon 3 lorsque le pivot 9 9 est en place dans son logement 24 du cadre.The horizontal branches which frame the notch formed in the frame thus defining two stops horizontal retaining 27a and 27b under which come imprison the respective tenons 14a and 14b of the pivot 9 of buffer 3 when pivot 9 9 is in place in its housing 24 of the frame.

Grâce à cet agencement, le tampon 3 est retenu sur le cadre 2 et ne peut se désolidariser de celui-ci accidentellement et intempestivement lorsqu'il est en position de fermeture ; par contre, les butées de retenue 27a et 27b n'empêchent pas le basculement du tampon pour l'ouverture du regard 1.Thanks to this arrangement, the buffer 3 is retained on frame 2 and cannot be separated from it accidentally and inadvertently when in closed position; on the other hand, the stops of retainer 27a and 27b do not prevent the buffer from tilting to open the manhole 1.

La paroi de fond 26 se prolonge, vers l'extérieur de la jupe 17, par une patte 28 sensiblement horizontale venue de matière avec la jupe 17 du cadre et qui, en se référant à la figure 2, s'étend entre les parois latérales 25a et 25b de l'échancrure. Cette patte 28 sert d'appui au pivot 9 lors du basculement du tampon 3 3 au cours des mouvements d'ouverture ou de fermeture.The bottom wall 26 extends towards the outside of the skirt 17, by a substantially horizontal tab 28 coming of material with the skirt 17 of the frame and which, with reference in Figure 2, extends between the side walls 25a and 25b of the notch. This tab 28 serves to support the pivot 9 during the tilting of the buffer 3 3 during opening or closing movements.

De manière avantageuse, la patte 28 est incurvée vers le haut à son extrémité libre située à l'opposé de la jupe 17, définissant ainsi une section incurvée 29 dont la courbure est adaptée pour épouser la forme cylindrique de la partie centrale 15 de l'arbre de pivotement 10 du pivot 9. Cette section incurvée 29 constitue ainsi un rebord qui sert de surface d'appui et de guidage du pivot 9 lors de l'articulation du tampon ; elle empêche notamment le pivot de glisser vers l'extérieur du cadre lors de la fermeture du tampon.Advantageously, the tab 28 is curved upwards at its free end located opposite the skirt 17, thus defining a curved section 29, the curvature is adapted to match the cylindrical shape of the central part 15 of the pivot shaft 10 of the pivot 9. This curved section 29 thus constitutes a rim which serves as a bearing and guiding surface for the pivot 9 during the articulation of the tampon; it prevents in particular the pivot to slide out of the frame when closing the buffer.

De manière préférentielle, chacune des deux parois latérales 25a, respectivement 25b, qui délimitent l'échancrure du logement 24 est également prolongée vers l'extérieur de la jupe 17 par une nervure d'appui 30a, respectivement 30b, venue de matière avec ladite jupe 17. Les nervures 30a, respectivement 30b, se raccordent vers le haut aux butées en surplomb 27a, respectivement 27b, et vers le bas à la patte 28.Preferably, each of the two walls 25a, 25b respectively, which delimit the notch of the housing 24 is also extended towards the outside of the skirt 17 by a support rib 30a, respectively 30b, integral with said skirt 17. The ribs 30a, respectively 30b, are connected towards the high at the overhanging stops 27a, respectively 27b, and down to tab 28.

Lorsque la charnière est montée, ces nervures 30a et 30b viennent respectivement en regard des tenons 14a et 14b du pivot 9, dont elles limitent le jeu dans le logement 24 du cadre ; ainsi, lors de la fermeture du tampon 3, elles assurent le guidage en rotation du tampon, et permettent par conséquent le positionnement correct de celui-ci dans la feuillure du cadre.When the hinge is mounted, these ribs 30a and 30b respectively come opposite the studs 14a and 14b of pivot 9, of which they limit the play in the housing 24 of the frame; thus, when the pad 3, they provide rotational guiding of the pad, and therefore allow the correct positioning of this one in the rebate of the frame.

Elles servent par ailleurs d'appui aux tenons respectifs 14a et 14b lorsque le tampon est en position ouverte.They also serve to support the posts 14a and 14b respectively when the buffer is in position opened.

Le cadre 2 présente également, à l'opposé du logement 24 du pivot 9, une cavité 31 destinée à recevoir la barrette 16 de manoeuvre du tampon 3.Frame 2 also presents, opposite the housing 24 of pivot 9, a cavity 31 intended to receive the bar 16 for operating the buffer 3.

Cette cavité 31 est ouverte vers le haut et débouche vers l'intérieur du cadre ; elle est ménagée dans l'épaisseur de la plaque 20 et de la jupe supérieure 17 du cadre 2.This cavity 31 is open upwards and opens out inward of the frame; she is spared in the thickness of the plate 20 and of the upper skirt 17 of the frame 2.

La mise en place du tampon sur le cadre s'effectue avant scellement de ce dernier dans le sol. En se référant à la figure 6, pour introduire le pivot 9 dans son logement 24 du cadre 2, on retourne le tampon 3 à plat, c'est-à-dire dans une position où le voile supérieur 5 du tampon réalise un angle de 180° par rapport à la position de fermeture représentée à la figure 5, et on le place à côté de la rive du cadre où se situe le logement 24, le pivot 9 étant orienté vers ce logement.The buffer is placed on the frame before sealing it in the ground. With reference in Figure 6, to introduce the pivot 9 in its housing 24 of the frame 2, the pad 3 is turned over flat, that is to say in a position where the upper veil 5 of the pad makes an angle of 180 ° to the position shown in Figure 5, and place it at side of the edge of the frame where the housing 24 is located, the pivot 9 being oriented towards this housing.

On translate alors horizontalement l'arbre de pivotement 10 dans l'espace ouvert 32 délimité par la patte 28 et les butées en surplomb 27a et 27b, et ce jusqu'à ce que les tenons 14a et 14b recouverts par les butées respectives 27a et 27b viennent au contact des nervures respectives 30a et 30b.We then horizontally translate the tree of pivot 10 in the open space 32 delimited by the tab 28 and the overhanging stops 27a and 27b, and this until the studs 14a and 14b covered by the respective stops 27a and 27b come into contact with respective ribs 30a and 30b.

Il suffit alors, à l'aide de la barrette de manoeuvre 16, d'imprimer au tampon 3 un mouvement de basculement dans le sens de la fermeture. Au cours de cette rotation du tampon, la forme cylindrique de la partie centrale 15 de l'arbre de pivotement 10 prend appui sur la patte 28 du cadre, et plus précisément sur la face intérieure de la section incurvée 29, facilitant ainsi le pivotement du tampon jusqu'à la position de fermeture représentée à la figure 5.It is then enough, using the bar of operation 16, to print on pad 3 a movement of tilting in the closing direction. During this pad rotation, the cylindrical shape of the part central 15 of the pivot shaft 10 rests on the tab 28 of the frame, and more precisely on the face interior of the curved section 29, thereby facilitating the swivel the buffer to the closed position shown in Figure 5.

Pour retirer le tampon 3, on reproduit ces opérations dans l'ordre inverse.To remove buffer 3, we reproduce these operations in reverse order.

Il est à noter que le dimensionnement des pièces est tel que le pivot 9 ne peut être introduit dans son logement 24 associé, ou extrait de celui-ci, que lorsque le tampon est incliné d'un angle de 180° environ par rapport à sa position de fermeture. Ceci vient du fait que la différence de niveau H entre la face supérieure 33 de la section incurvée 29 et la face inférieure des butées 27a et 27b est supérieure à l'épaisseur e des tenons 14a et 14b, mais inférieure à la largeur 1 de ces tenons ; cet agencement particulier autorise le passage du pivot 9 à travers l'espace ouvert 32 uniquement lorsque le tampon est incliné à 180°, et en interdit le passage pour toute autre inclinaison du tampon. Il est à noter que dans cette position d'inclinaison à 180° par rapport à la fermeture, la face supérieure 8 8 du tampon se situe en-dessous du plateau horizontal 20 du cadre.It should be noted that the sizing of the parts is such that pivot 9 cannot be inserted into its associated housing 24, or extract thereof, only when the pad is tilted at an angle of about 180 ° to its closed position. This is because the level difference H between the upper face 33 of the curved section 29 and the underside of the stops 27a and 27b is greater than the thickness e of the studs 14a and 14b, but less than the width 1 of these tenons; this particular arrangement allows the passage of the pivot 9 to through open space 32 only when the tampon is tilted 180 °, and prohibits the passage for any another inclination of the buffer. It should be noted that in this 180 ° tilt position relative to the closure, the upper face 8 8 of the pad is located below the horizontal plate 20 of the frame.

On comprend donc aisément, au vu de la figure 5, que lorsque le dispositif de voirie est scellé dans le sol 4, avec la face supérieure 21 du cadre affleurant le niveau supérieur du revêtement, qu'on ne puisse plus extraire facilement le tampon. Pour cela il est alors nécessaire soit de desceller le dispositif 1 dans son intégralité afin de pouvoir déposer le tampon, soit de détruire un volume suffisant de matériau de revêtement du sol pour pouvoir pivoter le tampon d'un angle de 180° puis translater horizontalement le pivot 9 en dehors de son logement 24 du cadre. De telles opérations sont fastidieuses et garantissent par conséquent le tampon contre toute tentative de vol ou de dépose par des gens mal intentionnés.It is therefore easily understood, in view of FIG. 5, that when the road system is sealed in the ground 4, with the upper face 21 of the frame flush with the level of the coating, which can no longer be extracted easily the tampon. For this it is then necessary either to unseal the device 1 in its entirety so to be able to deposit the stamp, or to destroy a volume enough flooring material to be able to rotate the buffer by an angle of 180 ° then translate horizontally the pivot 9 outside its housing 24 of the frame. Such operations are tedious and therefore guarantee the buffer against any attempted theft or removal by evil people intentioned.

On notera par ailleurs que lorsque le dispositif de voirie 1 est scellé dans le sol, le tampon 3 peut être ouvert d'un angle d'environ 150° par rapport à la position de fermeture. Dans cette position d'ouverture maximale, la région de la face supérieure 21 du tampon située à proximité du pivot 9 vient au contact du niveau du sol 4, interdisant par conséquent toute ouverture au-delà de cette limite.It should also be noted that when the road 1 is sealed in the ground, buffer 3 can be open at an angle of about 150 ° to the position closing. In this maximum opening position, the region of the upper face 21 of the tampon situated at proximity of pivot 9 comes into contact with ground level 4, consequently prohibiting any opening beyond this limit.

Un tel angle d'ouverture est cependant largement suffisant pour empêcher le tampon de se refermer accidentellement, sous l'effet de son propre poids.Such an opening angle is however largely sufficient to prevent the pad from closing accidentally, under the influence of its own weight.

Ce dispositif de voirie 1 offre également l'avantage d'être facile à mettre en oeuvre, le cadre 2 et le tampon 3 étant moulables sans noyau.This road system 1 also offers the advantage to be easy to implement, the frame 2 and the buffer 3 being moldable without core.

L'exemple de réalisation qui vient d'être décrit concerne des pièces en fonte ductile mais peut être appliqué, de manière plus générale, à des pièces métalliques.The embodiment which has just been described relates to ductile iron parts but may be applied more generally to parts metallic.

Ce dispositif à charnière peut d'autre part être utilisé avec un couvercle dont la forme générale est autre que circulaire, notamment pour des grilles ou tampons de forme polygonale. Dans le cas d'une grille ou d'un tampon de forme carrée ou rectangulaire, on utilisera de préférence deux charnières conformes à l'invention pour assurer l'articulation de cette pièce sur le cadre support associé, les deux charnières étant alors disposées sur une même rive.This hinged device can also be used with a cover whose general shape is different circular, especially for grids or buffers polygonal shape. In the case of a grid or a buffer square or rectangular, we will use preferably two hinges according to the invention for ensure the articulation of this part on the support frame associated, the two hinges being then placed on a same shore.

Enfin, le dispositif de voirie 1 1 décrit auparavant constitue un mode de réalisation préférentiel mais non limitatif de l'invention.Finally, the road system 1 1 described above constitutes a preferred embodiment but not limiting of the invention.

En variante, on peut par exemple envisager de supprimer la section incurvée 29 d'extrémité de la patte 28 du cadre et avoir dès lors un arbre de pivotement cylindriquement dont le diamètre soit inférieur à la hauteur qui sépare la patte 28, les butées en surplomb 27a et 27b, ceci de manière à pouvoir translater l'arbre de pivotement dans l'espace ouvert situé entre la patte 28 et les butées en surplomb 27a et 27b, permettant ainsi l'introduction du pivot dans son logement du cadre.Alternatively, one can for example consider remove the curved section 29 from the end of the tab 28 of the frame and therefore have a pivot shaft cylindrically whose diameter is less than the height separating leg 28, overhanging stops 27a and 27b, this so as to be able to translate the tree of pivoting in the open space between tab 28 and the overhanging stops 27a and 27b, thus allowing the introduction of the pivot in its housing of the frame.

Dans ce cas précis, cette opération peut alors être effectuée pour différentes inclinaisons du tampon par rapport au cadre. Pour extraire le tampon lorsque le dispositif de voirie est scellé dans le sol, il sera à nouveau nécessaire soit de soulever l'ensemble au-dessus du niveau du sol, soit de casser le matériau de revêtement du sol qui entoure la charnière, et ce jusqu'à pouvoir translater l'arbre de pivotement vers l'extérieur en dehors de son logement du cadre. Là encore, l'agencement particulier de la charnière qui rend délicate la dépose du tampon protège celui-ci contre les actes de vandalismes.In this specific case, this operation can then be performed for different inclinations of the buffer by report to the frame. To extract the buffer when the road system is sealed in the ground, it will be again necessary either to lift the assembly above the ground level, either to break the coating material of the soil around the hinge, until it can translate the pivot shaft outwards outside of its frame housing. Again, the layout particular of the hinge which makes it difficult to remove the buffer protects it against acts of vandalism.

Claims (7)

  1. A hinged roadway device (1) comprising a cover (3) of the grating or lid type and a supporting frame (2), said frame (2) being provided with at least one upwardly open recess (24), according to the installation requirements of the frame, leading into the interior thereof, each recess (24) being intended to co-operate with a pivot (9) with which the cover (3) is provided and which projects from the periphery of the said cover, thereby enabling the cover (3) to pivot relative to the frame (2) by pivoting about the hinged device (9, 24), characterised in that the recess (24) is in the form of a groove provided in the depth of the frame, this groove being delimited by two lateral walls (25a, 25b) which are connected to a base wall (26) and which, at the top, end in stop means (27a, 27b) projecting horizontally towards the exterior of the frame (2), the said stop means (27a, 27b) being adapted to cover the lateral ends (14a, 14b) of the pivot (9) when the cover (3) is in place on the frame (2), the said base wall (26) being extended towards the exterior of the frame (2) by a tab (28) serving to support the pivot (9), the cover (3) being mounted or removed by the pivot (9) of the cover passing through the open space (32) delimited by the tab (28) and the stop means (27a, 27b) of the frame (2), this open space (32) being arranged below the upper surface (21) of the frame (2) and opening in the direction of the exterior thereof.
  2. A roadway device according to claim 1, characterised in that the lateral walls (25a, 25b) bordering the groove are extended towards the exterior of the frame (2) by ribs (30a, 30b) for supporting and guiding the pivot (9), thereby ensuring correct positioning of the cover (3) on its supporting frame (2) when the cover is closed.
  3. A roadway device according to claim 1 or 2, characterised in that the supporting tab (28) extends horizontally between the two lateral walls (25a, 25b) of the groove and, at its free end, ends in an edge (29) projecting towards the top of the frame (2).
  4. A roadway device according to claim 3, characterised in that the pivot (9) has a pivot spindle (10) dimensioned so that the introduction of the pivot (9) into its associated recess (24) in the frame (2) is only possible when the principal surfaces of the cover (3) are inclined at an angle of 180° relative to the closed position of the cover (3).
  5. A roadway device according to claim 3 or 4, characterised in that the outer edge (29) of the tab (28) forms a curved portion which, during the articulation of the cover (3) on its frame (2), co-operates with a corresponding, generally cylindrical portion (15) of the pivot (9).
  6. A roadway device according to any one of claims 1 to 5, characterised in that, after being cemented into the ground (4), the maximum open position of the cover (3) is an open position of approximately 150° relative to the closed position.
  7. A roadway device according to any one of claims 1 to 6, characterised in that, in the closed position, the cover (3) rests on the base of a channel (23) formed in the periphery of a supporting collar (22) arranged on the inner circumference of the frame (2).
EP96470005A 1996-03-22 1996-03-22 Hinged, closed or grating-like, manhole cover and its supporting frame Expired - Lifetime EP0796949B1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP96470005A EP0796949B1 (en) 1996-03-22 1996-03-22 Hinged, closed or grating-like, manhole cover and its supporting frame
ES96470005T ES2158268T3 (en) 1996-03-22 1996-03-22 HINGE ROAD DEVICE COMPOSED BY A GRID TYPE COVER AND A SUPPORT FRAME.
DE69613342T DE69613342T2 (en) 1996-03-22 1996-03-22 Hinged traffic route device with a grate or manhole cover and with a support frame
AT96470005T ATE202174T1 (en) 1996-03-22 1996-03-22 HINGED TRAFFIC PATH DEVICE COMPRISING A COVER OF THE STYLE OF A GRATE OR SEWER COVER AND A SUPPORT FRAME
PT96470005T PT796949E (en) 1996-03-22 1996-03-22 INSPECTION DEVICE WITH PUSHER COMPREHENSING A COVER OF TYPE GRID OR COVER AND A SUPPORT ARMACAO
DK96470005T DK0796949T3 (en) 1996-03-22 1996-03-22 Hinged shaft cover with a grille-like or closed cover and a support frame
GR20010400777T GR3036043T3 (en) 1996-03-22 2001-06-14 Hinged, closed or grating-like, manhole cover and its supporting frame

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP96470005A EP0796949B1 (en) 1996-03-22 1996-03-22 Hinged, closed or grating-like, manhole cover and its supporting frame

Publications (2)

Publication Number Publication Date
EP0796949A1 EP0796949A1 (en) 1997-09-24
EP0796949B1 true EP0796949B1 (en) 2001-06-13

Family

ID=8225431

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96470005A Expired - Lifetime EP0796949B1 (en) 1996-03-22 1996-03-22 Hinged, closed or grating-like, manhole cover and its supporting frame

Country Status (7)

Country Link
EP (1) EP0796949B1 (en)
AT (1) ATE202174T1 (en)
DE (1) DE69613342T2 (en)
DK (1) DK0796949T3 (en)
ES (1) ES2158268T3 (en)
GR (1) GR3036043T3 (en)
PT (1) PT796949E (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7108447B2 (en) 2004-05-03 2006-09-19 Neenah Foundry Company Construction castings with ball and socket connectors
DE202018102933U1 (en) 2018-05-25 2018-06-18 Lorenz Kunststofftechnik Gmbh manhole cover

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2797281B1 (en) * 1999-08-04 2002-05-17 Fond De Brousseval Et Montreui ROADWAY DEVICE FOR VISITING AN UNDERGROUND STRUCTURE
DE10046045C1 (en) * 2000-09-18 2002-03-07 Buderus Guss Gmbh Shaft cover or grid attachment has rotary pivot pin fitting into opening provided by frame with cover preventing removal or fitting except in fully vertical position
US7094000B2 (en) 2004-05-03 2006-08-22 Neenah Foundry Company Socket hinged construction casting assembly

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2028773T3 (en) * 1987-04-07 1992-10-16 Pont-A-Mousson S.A. RECORD OF HINGE STREET IN T.
CH677244A5 (en) * 1988-07-05 1991-04-30 Von Roll Ag
FR2645189B1 (en) * 1989-04-03 1991-06-28 Pont A Mousson LOCKABLE GROUND LOOK AT OPENING
FR2645190B1 (en) * 1989-04-03 1991-06-28 Pont A Mousson HINGED LOOK
FR2695951B1 (en) * 1992-09-18 1994-12-09 Fonderie Meca Sa Ste Muretaine Hinge type manhole cover.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7108447B2 (en) 2004-05-03 2006-09-19 Neenah Foundry Company Construction castings with ball and socket connectors
DE202018102933U1 (en) 2018-05-25 2018-06-18 Lorenz Kunststofftechnik Gmbh manhole cover

Also Published As

Publication number Publication date
DE69613342D1 (en) 2001-07-19
EP0796949A1 (en) 1997-09-24
ES2158268T3 (en) 2001-09-01
GR3036043T3 (en) 2001-09-28
DE69613342T2 (en) 2001-10-11
DK0796949T3 (en) 2001-09-03
PT796949E (en) 2001-11-30
ATE202174T1 (en) 2001-06-15

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