EP0391826A1 - Hinged manhole cover - Google Patents

Hinged manhole cover Download PDF

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Publication number
EP0391826A1
EP0391826A1 EP90470013A EP90470013A EP0391826A1 EP 0391826 A1 EP0391826 A1 EP 0391826A1 EP 90470013 A EP90470013 A EP 90470013A EP 90470013 A EP90470013 A EP 90470013A EP 0391826 A1 EP0391826 A1 EP 0391826A1
Authority
EP
European Patent Office
Prior art keywords
frame
pivot
manhole cover
pad
cover according
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
EP90470013A
Other languages
German (de)
French (fr)
Other versions
EP0391826B1 (en
Inventor
Jean-Claude Hauer
Patrice Vauthier
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.)
Pont a Mousson SA
Original Assignee
Pont a Mousson 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
Application filed by Pont a Mousson SA filed Critical Pont a Mousson SA
Publication of EP0391826A1 publication Critical patent/EP0391826A1/en
Application granted granted Critical
Publication of EP0391826B1 publication Critical patent/EP0391826B1/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
    • E02D29/1463—Hinged connection of cover to frame
    • 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 subject of the present invention is a manhole cover provided with a hinged device which removably links the pad to the frame and authorizes the raising of the pad relative to the frame by pivoting around the hinged device.
  • Each housing having the general shape of a T, practiced in a peripheral region of the frame has two separate parts.
  • the second part has a first portion located radially inward and adjoining the first portion, having in radial section a concave shape facing outward, and a second portion located radially outward, the bottom of which is connected continuously. with the bottom of the first portion.
  • the first portion is overhung by retaining lips which frame a free space and the second portion is open upwards over its entire length.
  • Each pivot having the general shape of a T has a connecting part corresponding to the leg of the T and a pivot shaft part corresponding to the crossbar of the T, having a substantially cylindrical shape.
  • Such a hinged device described in French patent application no. 2 613 742 allows an opening position of the tampon with an inclination of 15 to 20 ° relative to the vertical.
  • This type of gaze risks in certain configurations to close accidentally under the effect for example of a violent gale or a clumsiness of a passerby, in particular in the case of particularly light pads.
  • the present invention relates to a manhole cover provided with a hinged device making it possible to remedy this drawback.
  • the present invention relates more particularly to a hinged manhole cover consisting of a frame and a buffer, the frame being provided with at least one housing open upwards, the lateral ends of which are overhung by retaining lips. and opening towards the inside of the frame, each housing being intended to cooperate with a projecting pivot of the pad, thus authorizing the lifting of said pad relative to the frame by pivoting around the hinged device, characterized in that the pivot has, in section along a vertical plane passing through the pivot axis, when the tampon is in the closed position, a central part of thickness greater than that of the lateral parts which surround it.
  • the manhole cover according to the invention consists of a frame 1 and a buffer 2.
  • the frame 1 has, in known manner, an inner projection 3 capped for example with a sound-absorbing seal 4 made of elastomer.
  • the pavement manhole is circular.
  • At least one housing 5 open upwards in the upper face of the frame 1 and opening into the interior of said frame.
  • the housing 5 has the general shape of a T when viewed from above.
  • the pad 2 has as many pivots 12 as the frame has housings 5.
  • Each pivot 12, having the general shape of a T in the embodiment shown, has a connecting part 13 extending radially and connected to the pad, and a pivoting shaft part 14 having a flat 15 extending over the entire upper surface parallel to the main faces of the pad 2.
  • the pivot shaft part 14 has, in section along a vertical plane passing through the pivot axis, when the plug is in the closed position, a central part 16 of thickness greater than that of the lateral parts 17 and 18 which frame it.
  • the pivoting shaft part 14 of the pad has a generally cylindrical shape and has two lateral recesses 19 and 20 whose size is substantially equal to that of the lips 9.
  • the recesses 19, 20 have a face 21 parallel to that of the plate 15 and and an oblique face 22 making an angle ⁇ of 130 to 140 ° relative to the upper face of the pivot 12.
  • the opening angle of the pad is then 40 to 50 ° relative to the vertical, which avoids any risk of accidental closing.

Abstract

Hinged road manhole consisting of a frame and of a cover. The frame is equipped with at least one upwardly open receptacle, the lateral ends of which are overhung with retaining lips and which opens out towards the inside of said frame. Each receptacle is intended for interacting with a projecting pivot (12) of the cover, thus allowing the cover to be raised in relation to the frame by pivoting about the hinge device. Each pivot (12) has a central part (16) of a thickness greater than that of the lateral parts (17) and (18) surrounding it. <IMAGE>

Description

La présente invention a pour objet un regard de chaussée pourvu d'un dispositif à charnière liant, de manière amovible, le tampon au cadre et autorisant le soulèvement du tampon par rapport au cadre par pivotement autour du dispositif à charnière.The subject of the present invention is a manhole cover provided with a hinged device which removably links the pad to the frame and authorizes the raising of the pad relative to the frame by pivoting around the hinged device.

On connaît les regards de chaussée à tampon basculant monté sur au moins une charnière et qui présentent à cet effet au moins un pivot saillant latéralement, chaque pivot s'engageant dans un logement respectif dont est muni le cadre.We know the manholes with tilting buffer mounted on at least one hinge and which have for this purpose at least one pivot projecting laterally, each pivot engaging in a respective housing which is provided with the frame.

Chaque logement, ayant la forme générale d'un T, pratiqué dans une région périphérique du cadre présente deux parties distinctes.Each housing, having the general shape of a T, practiced in a peripheral region of the frame has two separate parts.

Une première partie constituant la jambe du T et une seconde partie constituant la barre transversale du T de profondeur plus grande que la première partie.A first part constituting the leg of the T and a second part constituting the crossbar of the T of greater depth than the first part.

La seconde partie présente une première portion située radialement vers l'intérieur et jouxtant la première partie, ayant en coupe radiale une forme concave tournée vers l'extérieur, et une seconde portion située radialement vers l'extérieur dont le fond se raccorde de façon continue avec le fond de la première portion. La première portion est surplombée par des lèvres de retenues qui encadrent un espace libre et la seconde portion est ouverte vers le haut sur toute sa longueur.The second part has a first portion located radially inward and adjoining the first portion, having in radial section a concave shape facing outward, and a second portion located radially outward, the bottom of which is connected continuously. with the bottom of the first portion. The first portion is overhung by retaining lips which frame a free space and the second portion is open upwards over its entire length.

Chaque pivot, ayant la forme générale d'un T possède une partie de liaison correspondant à la jambe du T et une partie d'arbre de pivotement correspondant à la barre transversale du T, ayant une forme sensiblement cylindrique.Each pivot, having the general shape of a T has a connecting part corresponding to the leg of the T and a pivot shaft part corresponding to the crossbar of the T, having a substantially cylindrical shape.

Un tel dispositif à charnière, décrit dans la demande de brevet française n° 2 613 742 permet une position d'ouverture du tampon avec une inclinaison de 15 à 20° par rapport à la verticale.Such a hinged device, described in French patent application no. 2 613 742 allows an opening position of the tampon with an inclination of 15 to 20 ° relative to the vertical.

Ce type de regard risque dans certaines configurations de se refermer accidentellement sous l'effet par exemple d'un coup de vent violent ou d'une maladresse d'un passant, en particulier dans le cas de tampons particulièrement légers.This type of gaze risks in certain configurations to close accidentally under the effect for example of a violent gale or a clumsiness of a passerby, in particular in the case of particularly light pads.

En effet, il suffit de faire pivoter le tampon de 15 à 20° pour que celui-ci dépasse sa position d'équilibre verticale et se referme sous l'effet de son propre poids, ce qui représente un risque pour le personnel qui a pénétré dans la cheminée de visite qu'il recouvre.Indeed, it suffices to rotate the buffer 15 to 20 ° so that it exceeds its vertical equilibrium position and closes under the effect of its own weight, which represents a risk for personnel who have entered in the visiting chimney it covers.

La présente invention concerne un regard de chaussée pourvu d'un dispositif à charnière permettant de remédier à cet inconvénient.The present invention relates to a manhole cover provided with a hinged device making it possible to remedy this drawback.

La présente invention a plus particulièrement pour objet un regard de chaussée à charnière constitué d'un cadre et d'un tampon, le cadre étant muni d'au moins un logement ouvert vers le haut dont les extrémités latérales sont surplombées par des lèvres de retenue et débouchant vers l'intérieur du cadre, chaque logement étant destiné à coopérer avec un pivot saillant du tampon, autorisant ainsi le soulèvement dudit tampon par rapport au cadre par pivotement autour du dispositif à charnière, caractérisé en ce que le pivot présente, en coupe suivant un plan vertical passant par l'axe de pivotement, lorsque le tampon est en position de fermeture, une partie centrale d'épaisseur supérieure à celle des parties latérales qui l'encadrent.The present invention relates more particularly to a hinged manhole cover consisting of a frame and a buffer, the frame being provided with at least one housing open upwards, the lateral ends of which are overhung by retaining lips. and opening towards the inside of the frame, each housing being intended to cooperate with a projecting pivot of the pad, thus authorizing the lifting of said pad relative to the frame by pivoting around the hinged device, characterized in that the pivot has, in section along a vertical plane passing through the pivot axis, when the tampon is in the closed position, a central part of thickness greater than that of the lateral parts which surround it.

D'autres caractéristiques et avantages apparaîtront dans la description qui va suivre, donnée uniquement à titre d'exemple, faite en référence aux dessins annexés, dans lesquels :

  • - la Fig. 1 est une vue du dessus d'une partie du cadre selon l'invention ;
  • - la Fig. 2 est une vue partielle en perspective du tampon selon l'invention ;
  • - la Fig. 3 est une vue partielle en coupe radiale de la charnière, le tampon étant en position ouverte ;
  • - la Fig. 4 est une vue d'une variante de réalisation du regard de chaussée selon l'invention, le tampon étant en position ouverte.
Other characteristics and advantages will appear in the description which follows, given solely by way of example, made with reference to the appended drawings, in which:
  • - Fig. 1 is a top view of part of the frame according to the invention;
  • - Fig. 2 is a partial perspective view of the tampon according to the invention;
  • - Fig. 3 is a partial view in radial section of the hinge, the pad being in the open position;
  • - Fig. 4 is a view of an alternative embodiment of the manhole cover according to the invention, the pad being in the open position.

Le regard de chaussée selon l'invention est constitué d'un cadre 1 et d'un tampon 2.The manhole cover according to the invention consists of a frame 1 and a buffer 2.

Le cadre 1 présente, de manière connue, une saillie intérieure 3 coiffée par exemple d'un joint insonorisant 4 en élastomère.The frame 1 has, in known manner, an inner projection 3 capped for example with a sound-absorbing seal 4 made of elastomer.

Dans l'exemple de réalisation, le regard de chaussée est circulaire.In the embodiment, the pavement manhole is circular.

Dans l'épaisseur du cadre est prévu au moins un logement 5 ouvert vers le haut dans la face supérieure du cadre 1 et débouchant vers l'intérieur dudit cadre.In the thickness of the frame is provided at least one housing 5 open upwards in the upper face of the frame 1 and opening into the interior of said frame.

Dans l'exemple de réalisation représenté, le logement 5 a la forme générale d'un T en vue de dessus.In the embodiment shown, the housing 5 has the general shape of a T when viewed from above.

Une partie 6 dudit logement situé vers l'intérieur, constitue la jambe du T. Une partie 7 située vers l'extérieur constitue la barre transversale du T. Elle présente deux zones distinctes : une première zone 8 jouxtant la partie 6 dont les extrémités sont surplombées par des lèvres 9 qui encadrent un espace libre 10 prolongeant la partie 6, et une seconde zone 11 située le plus vers l'extérieur, de même dimension longitudinale que la zone 8 et présentant une ouverture 23 vers le haut sur toute sa longueur.A part 6 of said housing located inwardly constitutes the leg of the T. A part 7 located outwardly constitutes the transverse bar of the T. It has two distinct zones: a first zone 8 adjoining part 6 whose ends are overhung by lips 9 which frame a free space 10 extending part 6, and a second zone 11 located the most outwards, of the same longitudinal dimension as zone 8 and having an opening 23 upwards over its entire length.

Le tampon 2 présente autant de pivots 12 que le cadre présente de logements 5.The pad 2 has as many pivots 12 as the frame has housings 5.

Chaque pivot 12, ayant la forme générale d'un T dans l'exemple de réalisation représenté, possède une partie de liaison 13 s'étendant radialement et raccordée au tampon, et une partie d'arbre de pivotement 14 présentant un plat 15 s'étendant sur toute la surface supérieure parallèlement aux faces principales du tampon 2.Each pivot 12, having the general shape of a T in the embodiment shown, has a connecting part 13 extending radially and connected to the pad, and a pivoting shaft part 14 having a flat 15 extending over the entire upper surface parallel to the main faces of the pad 2.

La partie d'arbre de pivotement 14 présente, en coupe suivant un plan vertical passant par l'axe de pivotement, lorsque le tampon est en position de fermeture, une partie centrale 16 d'épaisseur supérieure à celle des parties latérales 17 et 18 qui l'encadrent.The pivot shaft part 14 has, in section along a vertical plane passing through the pivot axis, when the plug is in the closed position, a central part 16 of thickness greater than that of the lateral parts 17 and 18 which frame it.

Dans la variante de réalisation représentée Fig. 4, la partie d'arbre de pivotement 14 du tampon a une forme générale cylindrique et présente deux évidements latéraux 19 et 20 dont la taille est sensiblement égale à celle des lèvres 9.In the variant embodiment shown in FIG. 4, the pivoting shaft part 14 of the pad has a generally cylindrical shape and has two lateral recesses 19 and 20 whose size is substantially equal to that of the lips 9.

Les évidements 19, 20 présentent une face 21 parallèle à celle du plat 15 et et une face 22 oblique faisant un angle α de 130 à 140° par rapport à la face supérieure du pivot 12. Ainsi, lors de l'ouverture du tampon, le tampon pivote autour de sa partie d'arbre 14 jusqu'à ce que les parties latérales 17, 18 de ladite partie d'arbre 14 reposent contre la face inférieure des lèvres en surplomb 9, la partie de liaison 13 reposant contre le bord extérieur du logement 5. La partie centrale 16 pénètre alors dans l'espace libre 10 entre les lèvres 9.The recesses 19, 20 have a face 21 parallel to that of the plate 15 and and an oblique face 22 making an angle α of 130 to 140 ° relative to the upper face of the pivot 12. Thus, when the tampon opens, the pad pivots around its shaft part 14 until the lateral parts 17, 18 of said shaft part 14 rest against the underside of the overhanging lips 9, the connecting part 13 rests against the outer edge of the housing 5. The central part 16 then enters the free space 10 between the lips 9.

Dans la variante de réalisation, c'est la face 22 oblique des évidements 19, 20 qui repose contre la face inférieure des lèvres en surplomb 9.In the alternative embodiment, it is the oblique face 22 of the recesses 19, 20 which rests against the underside of the overhanging lips 9.

Ainsi le point d'appui de la partie d'arbre de pivotement 14 du pivot 12 contre la face inférieure des lèvres en surplomb 9 se situe plus vers le centre du pivot 12.Thus the fulcrum of the pivoting shaft part 14 of the pivot 12 against the underside of the overhanging lips 9 is located more towards the center of the pivot 12.

L'angle d'ouverture du tampon est alors de 40 à 50° par rapport à la verticale ce qui permet d'éviter tout risque de fermeture accidentelle.The opening angle of the pad is then 40 to 50 ° relative to the vertical, which avoids any risk of accidental closing.

Claims (7)

1.- Regard de chaussée à charnière constitué d'un cadre (1) et d'un tampon (2), le cadre (1) étant muni d'au moins un logement (5) ouvert vers le haut dont les extrémités latérales sont surplombées par des lèvres de retenue (9) et débouchant vers l'intérieur dudit cadre, chaque logement (5) étant destiné à coopérer avec un pivot saillant (12) du tampon, autorisant ainsi le soulèvement dudit tampon par rapport au cadre par pivotement autour du dispositif à charnière, caractérisé en ce que le pivot (12) présente en coupe suivant un plan vertical passant par l'axe de pivotement lorsque le tampon est en position de fermeture, une partie centrale (16) d'épaisseur supérieure à celle des parties latérales (17) et (18) qui l'encadrent.1.- Hinged manhole cover consisting of a frame (1) and a buffer (2), the frame (1) being provided with at least one housing (5) open upwards, the lateral ends of which are overhung by retaining lips (9) and opening towards the inside of said frame, each housing (5) being intended to cooperate with a projecting pivot (12) of the pad, thus authorizing the lifting of said pad relative to the frame by pivoting around of the hinged device, characterized in that the pivot (12) has in section along a vertical plane passing through the pivot axis when the pad is in the closed position, a central part (16) of thickness greater than that of side parts (17) and (18) which frame it. 2.- Regard de chaussée selon la revendication 1 caractérisé en ce que le pivot (12) possède une partie d'arbre de pivotement (14) de forme générale cylindrique.2.- manhole cover according to claim 1 characterized in that the pivot (12) has a pivot shaft part (14) of generally cylindrical shape. 3.- Regard de chaussée selon l'une des revendications 1 et 2 caractérisé en ce que l'arbre de pivotement (14) du pivot (12) présente deux évidements latéraux (19) et (20).3.- manhole cover according to one of claims 1 and 2 characterized in that the pivot shaft (14) of the pivot (12) has two lateral recesses (19) and (20). 4.- Regard de chaussée selon la revendication 3 caractérisé en ce que la taille des évidements (19) et (20) est sensiblement égale à celle des lèvres (9).4.- manhole cover according to claim 3 characterized in that the size of the recesses (19) and (20) is substantially equal to that of the lips (9). 5.- Regard de chaussée selon la revendication 3 caractérisé en ce que les évidements (19) et (20) présentent une face (22) oblique faisant un angle α de 130 à 140° par rapport à la face supérieure du pivot (12).5.- manhole cover according to claim 3 characterized in that the recesses (19) and (20) have an oblique face (22) making an angle α of 130 to 140 ° relative to the upper face of the pivot (12) . 6.- Regard de chaussée selon la revendication 1 caractérisé en ce que, en position d'ouverture du tampon (2), les parties latérales (17) et (18) reposent contre la face inférieure des lèvres en surplomb (9).6.- manhole cover according to claim 1 characterized in that, in the opening position of the pad (2), the lateral parts (17) and (18) rest against the underside of the lips overhanging (9). 7.- Regard de chaussée selon l'une des revendications 1 à 5 caractérisé en ce qu'en position d'ouverture du tampon (2), la face oblique (22) des évidements (19) et (20) reposent contre la face inférieure des lèvres en surplomb (9).7.- manhole cover according to one of claims 1 to 5 characterized in that in the opening position of the pad (2), the oblique face (22) of the recesses (19) and (20) rest against the face lower lip overhanging (9).
EP90470013A 1989-04-03 1990-03-26 Hinged manhole cover Expired - Lifetime EP0391826B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8904495 1989-04-03
FR8904495A FR2645190B1 (en) 1989-04-03 1989-04-03 HINGED LOOK

Publications (2)

Publication Number Publication Date
EP0391826A1 true EP0391826A1 (en) 1990-10-10
EP0391826B1 EP0391826B1 (en) 1992-10-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP90470013A Expired - Lifetime EP0391826B1 (en) 1989-04-03 1990-03-26 Hinged manhole cover

Country Status (9)

Country Link
EP (1) EP0391826B1 (en)
AT (1) ATE81692T1 (en)
DE (1) DE69000391T2 (en)
DK (1) DK0391826T3 (en)
ES (1) ES2032722T3 (en)
FR (1) FR2645190B1 (en)
GR (1) GR3006039T3 (en)
IE (1) IE63447B1 (en)
NO (1) NO901469L (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2731023A1 (en) * 1995-02-24 1996-08-30 Pont A Mousson Burglar proof hinged cover for manhole and inspection pits
EP0796949A1 (en) * 1996-03-22 1997-09-24 Pont-A-Mousson S.A. Hinged, closed or grating-like, manhole cover and its supporting frame
FR2788070A1 (en) * 1998-12-31 2000-07-07 Pascal Hibon Retainer for manhole cover has recesses on frame to receive bosses on cover
US6749363B1 (en) * 2000-10-23 2004-06-15 Dabico Inc. Aircraft service pit lid hinge
FR2907477A1 (en) * 2006-10-18 2008-04-25 Norinco Soc Par Actions Simpli Road device for forming manhole, has bolt with end part cooperating with striker to prevent tilting of stopper from security position to closing position when stopper is moved from closing position to open position
EP1728932A3 (en) * 2005-06-03 2009-07-01 Buderus Kanalguss GmbH Manhole cover or top part
US11401681B2 (en) * 2018-04-27 2022-08-02 Bingham & Taylor Corp. Snap on meter pit extension

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10151449B4 (en) * 2001-10-18 2007-09-13 Aco Severin Ahlmann Gmbh & Co. Kg cover assembly
WO2003027400A1 (en) 2001-09-21 2003-04-03 Aco Severin Ahlmann Gmbh & Co. Kg. Cover arrangement
FR2889217B1 (en) † 2005-07-27 2009-03-06 Norinco Soc Par Actions Simpli DEVICE FOR JOINING A BUFFER OR COVER WITH A FRAME, IN PARTICULAR OF A PAVEMENT LOOK

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3130651A (en) * 1960-08-23 1964-04-28 Neenah Foundry Company Mounting for hinged covers
FR2424372A1 (en) * 1978-04-24 1979-11-23 Dumortier Robert Lever latch securing circular manhole cover to frame - has lateral V=shape with apex axle top leg forming hand lever and lower leg including bolt hook
EP0286562A2 (en) * 1987-04-07 1988-10-12 Pont-A-Mousson S.A. Manhole with a T-shaped hinge

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3130651A (en) * 1960-08-23 1964-04-28 Neenah Foundry Company Mounting for hinged covers
FR2424372A1 (en) * 1978-04-24 1979-11-23 Dumortier Robert Lever latch securing circular manhole cover to frame - has lateral V=shape with apex axle top leg forming hand lever and lower leg including bolt hook
EP0286562A2 (en) * 1987-04-07 1988-10-12 Pont-A-Mousson S.A. Manhole with a T-shaped hinge

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2731023A1 (en) * 1995-02-24 1996-08-30 Pont A Mousson Burglar proof hinged cover for manhole and inspection pits
EP0796949A1 (en) * 1996-03-22 1997-09-24 Pont-A-Mousson S.A. Hinged, closed or grating-like, manhole cover and its supporting frame
FR2788070A1 (en) * 1998-12-31 2000-07-07 Pascal Hibon Retainer for manhole cover has recesses on frame to receive bosses on cover
US6749363B1 (en) * 2000-10-23 2004-06-15 Dabico Inc. Aircraft service pit lid hinge
EP1728932A3 (en) * 2005-06-03 2009-07-01 Buderus Kanalguss GmbH Manhole cover or top part
FR2907477A1 (en) * 2006-10-18 2008-04-25 Norinco Soc Par Actions Simpli Road device for forming manhole, has bolt with end part cooperating with striker to prevent tilting of stopper from security position to closing position when stopper is moved from closing position to open position
WO2008050036A2 (en) * 2006-10-18 2008-05-02 Norinco Highways device with a support frame and covering element, such as a plug or lid or grating, pivotally mounted on the frame
WO2008050036A3 (en) * 2006-10-18 2008-09-12 Norinco Highways device with a support frame and covering element, such as a plug or lid or grating, pivotally mounted on the frame
CN101583763B (en) * 2006-10-18 2012-01-25 诺林科公司 Highways device with a support frame and covering element, such as a plug or lid or grating, pivotally mounted on the frame
US11401681B2 (en) * 2018-04-27 2022-08-02 Bingham & Taylor Corp. Snap on meter pit extension

Also Published As

Publication number Publication date
FR2645190A1 (en) 1990-10-05
ATE81692T1 (en) 1992-11-15
NO901469L (en) 1990-10-04
DK0391826T3 (en) 1992-12-21
DE69000391D1 (en) 1992-11-26
ES2032722T1 (en) 1993-03-01
DE69000391T2 (en) 1993-03-04
FR2645190B1 (en) 1991-06-28
NO901469D0 (en) 1990-03-30
EP0391826B1 (en) 1992-10-21
IE63447B1 (en) 1995-04-19
GR3006039T3 (en) 1993-06-21
ES2032722T3 (en) 1993-04-16

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