EP0277587B1 - Cover for an opening with a lid or grating inserted in a frame - Google Patents

Cover for an opening with a lid or grating inserted in a frame Download PDF

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Publication number
EP0277587B1
EP0277587B1 EP88101151A EP88101151A EP0277587B1 EP 0277587 B1 EP0277587 B1 EP 0277587B1 EP 88101151 A EP88101151 A EP 88101151A EP 88101151 A EP88101151 A EP 88101151A EP 0277587 B1 EP0277587 B1 EP 0277587B1
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EP
European Patent Office
Prior art keywords
cover
frame
grate
ribs
bearing surface
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
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EP88101151A
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German (de)
French (fr)
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EP0277587A1 (en
Inventor
Derek Ferns
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.)
Von Roll AG
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Von Roll AG
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Application filed by Von Roll AG filed Critical Von Roll AG
Priority to AT88101151T priority Critical patent/ATE67542T1/en
Publication of EP0277587A1 publication Critical patent/EP0277587A1/en
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Publication of EP0277587B1 publication Critical patent/EP0277587B1/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 invention relates to a cover for an opening in road systems, squares, courtyards and floors according to the preamble of claim 1.
  • the invention relates to the field of devices such as those used in road systems, for example manhole covers for covering manholes, drains and channels.
  • manhole covers for covering manholes, drains and channels.
  • covers can also be used in squares, in courtyards and also in the floors of buildings and serve there as covers for manholes, inspection shafts and the like.
  • covers are known in many designs and essentially consist of a frame and a lid or grate inserted in the frame.
  • the frame serves as a border for the opening and also as a support frame for the lid or grate.
  • the frame and the cover or the grate are preferably laid at ground level.
  • the means for fixing the mutual position of the cover or grate and the frame, according to the characterizing features of claim 1, are designed such that they complement conventional constructions as it were and, in particular, frames designed according to the invention also readily can be combined with conventional lids without such means.
  • the invention can be used in connection with grates as well as with lids.
  • a lid or grate according to the invention offers the advantages of great dimensional stability and simple manufacture due to the structural connection of the fixing means with reinforcing ribs. Because the bearing surface for the cover or grate is formed by a support flange, the latter can be made less inclined, which reduces the risk of the cover or grate jamming.
  • a cover is shown in the not yet installed state, which is composed of a frame 1 and a cover 2.
  • the frame 1 is essentially a cylindrical tube piece, which surrounds the opening provided in the bottom and at the same time is storage of the cover 2.
  • a support flange 3 is arranged on the inside of the cylindrical part 4 of the frame 1, which forms a support surface for the storage of the cover 2.
  • a number of grooves 7 are incorporated, which are provided on the support flange 3 at regular intervals.
  • the grooves 7 have essentially radially extending side walls 8 which merge into end walls 9 converging in a roof shape.
  • the grooves 7 thus have an approximate wedge shape.
  • the support flange 3 forms on its upper side a bearing surface 10 for the cover 2.
  • the bearing surface 10 is designed as a conical, downward and inward surface.
  • a corresponding conical, downward and inward bearing surface 11 is provided on the cover 2 on the underside at the edge thereof.
  • Radially extending ribs 15 are arranged on the underside 12 of the cover 2.
  • the ribs 15 end in a cam 16, which extends over the bearing surface 11 and has a wedge shape that corresponds to the wedge shape of the groove 7.
  • the cam 16 has side walls 8 ⁇ and a roof-shaped end wall 9 ⁇ .
  • the cams 16 fit into the grooves 7 in the support flange 3. This ensures that the cover 2 is positioned and centered precisely in the frame 1. A slight play is provided between the cams 16 and the grooves 7.
  • the section shown in FIG. 2 shows two grooves 7 which only protrude to a small extent into the bearing surface 10 of the support flange 3.
  • grooves 17 are provided next to the grooves, which represent an interruption of the bearing surface. Substances impairing the storage of the cover can collect in the channels 17.
  • a groove 7 is shown on an enlarged scale.
  • the support flange 3 is integrally connected to the cylindrical part 4 of the frame 1.
  • the groove 7 is arranged, whereby it extends approximately radially extending side walls 8 and two end walls 9 converging in an arcuate shape.
  • the side walls 8 and the end walls 9 can also be formed inclined downwards and inwards. This ensures that the cover 2 can only move until the cam 16 is clamped between the side walls 8 and end walls 9 of the groove 7. It is also possible that the side walls 8 ⁇ and end walls 9 ⁇ of the cams 16 are inclined downwards and inwards.
  • the cylindrical part 4 extends over the contact surface 11 with an edge portion 18, the edge surface 19 of which is approximately flush with the surrounding base surface.
  • the cover 2 inserted into the frame 1 on the support surface 11 has a cover height through which it is aligned with the edge surface 19 in the centered position.
  • FIG. 4 shows a variant of the cover 2.
  • This lid differs from that according to FIG. 1 in that the ribs 15 are designed like a grid and with crossing ribs. Recesses 20 are provided in the ribs 15, through which a reduction in weight is achieved.
  • the cams 16 can be provided with the wedge-shaped ends.
  • the grooves 7 are also to be arranged accordingly, ie in the case of a circular cover, the grooves 7 are no longer radial.
  • the covers and thus also the cover 2 can have any shape, ie in addition to the round design can be oval, square, triangular, quadrangular, the grooves 7 are to be provided in accordance with the shape of the cover 2 and the position of the cams 16.
  • the other parts of the cover 2 according to FIG. 4 correspond to those in FIG. 1.
  • the knobs 16 extend over the downwardly and inwardly inclined bearing surface 11, to which the vertical cover edge 21 adjoins, which in its height is that of the edge part 18 of the frame 1 corresponds.
  • ribs can also be different.
  • further rib arrangements can also be selected, e.g. an annular rib in the center of the cover 2 with adjoining radially extending ribs.
  • a grate with the same dimensions can also be used. Only passages between the ribs 15 are provided for the formation of a grate,
  • the cover described is designed in such a way that the cover 2 is self-centering. This is achieved by the formation of the inclined surfaces 10 and 11. This centering also causes rotation, so that the cams 16 are centered in the grooves 7.
  • the cover described has the property of largely eliminating the possibility that the cover or the grate 2 can be moved or removed from its position by traffic influences.
  • the small movements that the bearing surface 10 of the frame 1 and the bearing surface 11 of the cover 2 perform against each other to a certain extent cause self-cleaning, so that problems with penetrating dirt can hardly occur.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Paleontology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Sewage (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
  • Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
  • Baking, Grill, Roasting (AREA)
  • Mirrors, Picture Frames, Photograph Stands, And Related Fastening Devices (AREA)
  • Food-Manufacturing Devices (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Road Signs Or Road Markings (AREA)
  • Bathtub Accessories (AREA)

Abstract

A covering for an opening in road surfaces, squares or the like comprises a frame and a cover. The cover has a conical, downwardly and inwardly inclined contact surface by which the cover is supported on a bearing surface provided on a support flange of the frame. The bearing surface is also conical and inwardly inclined. At the bearing surface are provided spaced, circumferentially distributed wedge-shaped grooves, which cooperate with lugs on the cover. By means of the inwardly and downwardly inclined surfaces of the lugs and grooves, a self-centering of the cover is obtained. The centering is guided by the lugs. Thus, even in the case of high traffic loads, the cover is not moved from its position.

Description

Die Erfindung betrifft eine Abdeckung für eine Oeffnung im Strassenanlagen, Plätzen, Höfen und Böden gemäss dem Oberbegriff des Anspruchs 1.The invention relates to a cover for an opening in road systems, squares, courtyards and floors according to the preamble of claim 1.

Die Erfindung betrifft das Gebiet von Einrichtungen, wie sie in Strassenanlagen eingesetzt werden, z.B. Schachtabdeckungen zur Abdeckung von Schächten, Abläufen und Kanälen. Solche Abdeckungen können jedoch auch auf Plätzen, in Höfen und auch in Böden von Gebäuden verwendet werden und dienen dort als Abdeckung für Mannlöcher, Kontrollschächte u.dgl. Solche Abdeckungen sind in vielen Ausführungen bekannt und setzen sich im wesentlichen aus einem Rahmen und einem in dem Rahmen eingesetzten Deckel oder Rost zusammen. Der Rahmen dient hierbei als Einfassung der Oeffnung und auch als Stützrahmen für den Deckel oder Rost. Der Rahmen und der Deckel oder der Rost werden hierbei vorzugsweise ebenerdig verlegt.The invention relates to the field of devices such as those used in road systems, for example manhole covers for covering manholes, drains and channels. However, such covers can also be used in squares, in courtyards and also in the floors of buildings and serve there as covers for manholes, inspection shafts and the like. Such covers are known in many designs and essentially consist of a frame and a lid or grate inserted in the frame. The frame serves as a border for the opening and also as a support frame for the lid or grate. The frame and the cover or the grate are preferably laid at ground level.

Aus GB-A-1 397 554 ist eine gattungsgemässe Abdeckung bekannt, bei der die Mittel zur Fixierung der gegenseitigen Lage von Rahmen und Deckel als drei sich jeweils über etwa ein Sechstel des Deckelumfangs erstreckende Abschnitte grösseren Radius' und diesen entsprechende Abschnitte im Rahmen ausgebildet sind.From GB-A-1 397 554 a generic cover is known, in which the means for fixing the mutual position of the frame and the cover are designed as three sections of greater radius, each extending over about a sixth of the cover circumference, and corresponding sections in the frame .

Das hat zur Folge, dass Rahmen und Deckel in jedem Fall exakt formschlüssig aufeinanderpassen müssen. Es ist insbesondere unmöglich, herkömmliche runde Deckel oder Roste zu verwenden. Ausserdem ist die Form für Roste wenig geeignet - es ist in der genannten Anmeldung auch nur ein Deckel beschrieben.The result of this is that the frame and lid must always fit each other in a form-fitting manner. In particular, it is impossible to use conventional round lids or grids. In addition, the shape is not very suitable for gratings - only one lid is described in the application mentioned.

Demgegenüber sind bei der Abdeckung gemäss der Erfindung die Mittel zur Fixierung der gegenseitigen Lage des Deckels oder Rosts und des Rahmens, nach den kennzeichnenden Merkmalen des Anspruchs 1, so ausgebildet, dass sie herkömmliche Konstruktionen gleichsam ergänzen und insbesondere gemäss der Erfindung ausgebildete Rahmen ohne weiteres auch mit herkömmlichen Deckeln ohne derartige Mittel kombiniert werden können. Die Erfindung kann ebensogut im Zusammenhang mit Rosten wie mit Deckeln verwendet werden. Ausserdem bietet ein erfindungsgemässer Deckel oder Rost durch die strukturelle Verbindung der Fixierungsmittel mit Verstärkungsrippen die Vorteile grosser Formstabilität und einfacher Herstellung. Dadurch, dass die Auflagefläche für den Deckel oder Rost durch einen Stützflansch gebildet wird, kann dieselbe weniger stark geneigt ausgebildet werden, was die Gefahr eines Verklemmens des Deckels oder Rostes vermindert.In contrast, in the cover according to the invention, the means for fixing the mutual position of the cover or grate and the frame, according to the characterizing features of claim 1, are designed such that they complement conventional constructions as it were and, in particular, frames designed according to the invention also readily can be combined with conventional lids without such means. The invention can be used in connection with grates as well as with lids. In addition, a lid or grate according to the invention offers the advantages of great dimensional stability and simple manufacture due to the structural connection of the fixing means with reinforcing ribs. Because the bearing surface for the cover or grate is formed by a support flange, the latter can be made less inclined, which reduces the risk of the cover or grate jamming.

Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und nachfolgend beschrieben. Es zeigen:

Fig. 1
eine schematische Ansicht einer aus einem Rahmen und einem Deckel bestehenden kreisförmigen Abdeckung in räumlicher Darstellung.
Fig. 2
eine schematische Darstellung eines Teiles des den Deckel oder den Rost umgebenden Rahmens in räumlicher Darstellung,
Fig. 3
einen schematisch dargestellten vergrösserten Ausschnitt aus Fig. 2, bei welchem eine Nut im Stützflansch des Rahmens dargestellt ist, ebenfalls in räumlicher Darstellung und
Fig. 4
die Unterseite eines schematisch dargestellten kreisförmigen Deckels für eine Abdeckung in räumlicher Darstellung.
Embodiments of the invention are shown in the drawing and described below. Show it:
Fig. 1
is a schematic view of a circular cover consisting of a frame and a cover in a spatial representation.
Fig. 2
3 shows a schematic representation of a part of the frame surrounding the cover or the grate,
Fig. 3
a schematically illustrated enlarged section of Fig. 2, in which a groove is shown in the support flange of the frame, also in a spatial representation and
Fig. 4
the bottom of a schematically illustrated circular lid for a cover in a spatial representation.

In Fig. 1 ist eine Abdeckung in noch nicht eingebautem Zustand dargestellt, die aus einem Rahmen 1 und einem Deckel 2 zusammengesetzt ist. Der Rahmen 1 ist im wesentlichen ein zylindrisches Rohrstück, das die im Boden vorgesehene Oeffnung umgibt und gleichzeitig Lagerung des Deckels 2 ist. Zu diesem Zweck ist auf der Innenseite des zylinderförmigen Teils 4 des Rahmens 1 ein Stützflansche 3 angeordnet, der eine Stützfläche für die Lagerung des Deckels 2 bildet.In Fig. 1, a cover is shown in the not yet installed state, which is composed of a frame 1 and a cover 2. The frame 1 is essentially a cylindrical tube piece, which surrounds the opening provided in the bottom and at the same time is storage of the cover 2. For this purpose, a support flange 3 is arranged on the inside of the cylindrical part 4 of the frame 1, which forms a support surface for the storage of the cover 2.

Im Stützflansch 3 sind eine Anzahl Nuten 7 eingearbeitet, die in gleichmässigen Abständen am Stützflansch 3 vorgesehen sind. Die Nuten 7 weisen im wesentlichen radial verlaufende Seitenwände 8 auf, die in dachförmig zusammenlaufende Stirnwände 9 übergehen. Die Nuten 7 weisen somit eine angenäherte Keilform auf.In the support flange 3, a number of grooves 7 are incorporated, which are provided on the support flange 3 at regular intervals. The grooves 7 have essentially radially extending side walls 8 which merge into end walls 9 converging in a roof shape. The grooves 7 thus have an approximate wedge shape.

Der Stützflansch 3 bildet an seiner Oberseite eine Lagerfläche 10 für den Deckel 2. Die Lagerfläche 10 ist als konische, abwärts und einwärts gerichtete Fläche ausgebildet.The support flange 3 forms on its upper side a bearing surface 10 for the cover 2. The bearing surface 10 is designed as a conical, downward and inward surface.

In gleicher Weise ist am Deckel 2 an der Unterseite am Rand desselben eine entsprechende konische, abwärts und einwärts gerichtete Auflagefläche 11 vorgesehen.In the same way, a corresponding conical, downward and inward bearing surface 11 is provided on the cover 2 on the underside at the edge thereof.

Auf der Unterseite 12 des Deckels 2 sind radial verlaufende Rippen 15 angeordnet. Die Rippen 15 enden in einem Nocken 16, der sich über die Auflagefläche 11 erstreckt und Keilform aufweist, die der Keilform der Nut 7 entspricht. Der Nocken 16 weist Seitenwände 8ʹ und eine dachförmige Stirnwand 9ʹ auf.Radially extending ribs 15 are arranged on the underside 12 of the cover 2. The ribs 15 end in a cam 16, which extends over the bearing surface 11 and has a wedge shape that corresponds to the wedge shape of the groove 7. The cam 16 has side walls 8ʹ and a roof-shaped end wall 9ʹ.

Wird der Deckel 2 mit seiner Auflagefläche 11 auf die Oberseite 10 des Stützflansches 3 aufgelegt, passen die Nocken 16 in die Nuten 7 im Stützflansch 3. Dadurch wird eine genaue Positionierung und Zentrierung des Deckels 2 im Rahmen 1 erreicht. Zwischen den Nocken 16 und den Nuten 7 ist ein geringes Spiel vorgesehen.If the cover 2 with its support surface 11 is placed on the top 10 of the support flange 3, the cams 16 fit into the grooves 7 in the support flange 3. This ensures that the cover 2 is positioned and centered precisely in the frame 1. A slight play is provided between the cams 16 and the grooves 7.

In den Figuren 2-4 sind noch einige Details der Abdeckung nach Fig. 1 dargestellt.In Figures 2-4 some details of the cover of Fig. 1 are shown.

Der in Fig. 2 dargestellte Ausschnitt zeigt zwei Nuten 7, die nur zu einem kleinen Teil in die Lagerfläche 10 des Stützflansches 3 ragen. In der Lagerfläche 10 sind anschliessend an die Nuten 7 Rinnen 17 vorgesehen, die einen Unterbruch der Lagerfläche darstellen. In den Rinnen 17 können sich die Lagerung des Deckels beeinträchtigende Stoffe sammeln.The section shown in FIG. 2 shows two grooves 7 which only protrude to a small extent into the bearing surface 10 of the support flange 3. In the bearing surface 10 7 grooves 17 are provided next to the grooves, which represent an interruption of the bearing surface. Substances impairing the storage of the cover can collect in the channels 17.

In Fig. 3 ist eine Nut 7 in vergrössertem Massstab dargestellt. Der Stützflansch 3 ist mit dem zylinderförmigen Teil 4 des Rahmens 1 integral verbunden. In der Auflagefläche 10, welche abwärts und einwärts geneigt ist, ist die Nut 7 angeordnet, wobei sie sich aus etwa radial verlaufenden Seitenwänden 8 und zwei spitzbogenförmig zusammenlaufenden Stirnwänden 9 zusammensetzt. Die Seitenwände 8 und die Stirnwände 9 können ebenfalls abwärts und einwärts geneigt ausgebildet werden. Damit wird erreicht, dass der Deckel 2 sich nur soweit verschieben kann, bis der Nocken 16 zwischen den Seitenwänden 8 und Stirnwänden 9 der Nut 7 festgeklemmt wird. Hierbei ist es auch möglich, dass auch die Seitenwände 8ʹ und Stirnwände 9ʹ der Nocken 16 abwärts und einwärts geneigt sind.In Fig. 3, a groove 7 is shown on an enlarged scale. The support flange 3 is integrally connected to the cylindrical part 4 of the frame 1. In the support surface 10, which is inclined downwards and inwards, the groove 7 is arranged, whereby it extends approximately radially extending side walls 8 and two end walls 9 converging in an arcuate shape. The side walls 8 and the end walls 9 can also be formed inclined downwards and inwards. This ensures that the cover 2 can only move until the cam 16 is clamped between the side walls 8 and end walls 9 of the groove 7. It is also possible that the side walls 8ʹ and end walls 9ʹ of the cams 16 are inclined downwards and inwards.

Ueber der Auflagefläche 11 erstreckt sich der zylinderförmige Teil 4 mit einer Randpartie 18, deren Randfläche 19 mit der umgebenden Bodenfläche etwa bündig ist. Der in den Rahmen 1 auf die Auflagefläche 11 eingelegte Deckel 2 weist eine Deckelhöhe auf, durch welche sie in der zentrierten Lage mit der Randfläche 19 fluchtet.The cylindrical part 4 extends over the contact surface 11 with an edge portion 18, the edge surface 19 of which is approximately flush with the surrounding base surface. The cover 2 inserted into the frame 1 on the support surface 11 has a cover height through which it is aligned with the edge surface 19 in the centered position.

In Fig. 4 ist eine Variante des Deckels 2 dargestellt. Dieser Deckel unterscheidet sich von demjenigen nach Fig. 1 dadurch, dass die Rippen 15 gitterartig und mit sich kreuzenden Rippen ausgebildet sind. In den Rippen 15 sind Ausnehmungen 20 vorgesehen, durch welche eine Gewichtsverminderung erreicht wird. Auch bei dieser Ausführung können die Nocken 16 mit den keilförmigen Enden versehen sein. In diesem Falle sind auch die Nuten 7 entsprechend anzuordnen, d.h. bei einem kreisförmigen Deckel liegen die Nuten 7 nicht mehr radial. Da jedoch die Abdeckungen und damit auch die Deckel 2 eine beliebige Form aufweisen können, d.h. neben der runden Ausführung oval, quadratisch, dreieckig, viereckig sein können, sind die Nuten 7 entsprechend der Form der Deckels 2 und der Lage der Nocken 16 vorzusehen. Die übrigen Teile des Deckels 2 nach Fig. 4 entsprechen denjenigen in Fig. 1. Die Knocken 16 erstrecken sich über die abwärts und einwärts geneigte Auflagefläche 11, an welche der senkrechte Deckelrand 21 anschliesst, der in seiner Höhe demjenigen der Randpartie 18 des Rahmens 1 entspricht. Grundsätzlich wäre es möglich, die nach abwärts und einwärts geneigten Flächen 10, 11 sphärisch oder mit einer andern Flächenform zu versehen, welche eine selbsttätige Zentrierung des Deckels 2 im Rahmen 1 ermöglicht.4 shows a variant of the cover 2. This lid differs from that according to FIG. 1 in that the ribs 15 are designed like a grid and with crossing ribs. Recesses 20 are provided in the ribs 15, through which a reduction in weight is achieved. In this embodiment, too, the cams 16 can be provided with the wedge-shaped ends. In this case, the grooves 7 are also to be arranged accordingly, ie in the case of a circular cover, the grooves 7 are no longer radial. However, since the covers and thus also the cover 2 can have any shape, ie in addition to the round design can be oval, square, triangular, quadrangular, the grooves 7 are to be provided in accordance with the shape of the cover 2 and the position of the cams 16. The other parts of the cover 2 according to FIG. 4 correspond to those in FIG. 1. The knobs 16 extend over the downwardly and inwardly inclined bearing surface 11, to which the vertical cover edge 21 adjoins, which in its height is that of the edge part 18 of the frame 1 corresponds. Basically, it would be possible to post the downward and inward inclined surfaces 10, 11 to be provided spherically or with another surface shape which enables the cover 2 to be automatically centered in the frame 1.

Die Ausbildung der Rippen kann ebenfalls verschieden sein. Ausser den in Fig. 1 und 4 gezeigten Rippenanordnugnen können auch weitere Rippenanordnungen gewählt werden, z.B. eine Ringrippe im Zentrum des Deckels 2 mit daran anschliessenden radial verlaufenden Rippen.The formation of the ribs can also be different. In addition to the rib arrangement shown in Figs. 1 and 4, further rib arrangements can also be selected, e.g. an annular rib in the center of the cover 2 with adjoining radially extending ribs.

Anstelle des Deckels 2 kann auch ein Rost mit denselben Dimensionen verwendet werden. Es werden für die Bildung eines Rostes lediglich Durchgänge zwischen den Rippen 15 vorgesehen,Instead of the cover 2, a grate with the same dimensions can also be used. Only passages between the ribs 15 are provided for the formation of a grate,

Die beschriebene Abdeckung ist in der Weise ausgebildet, dass der Deckel 2 selbstzentrierend ist. Dies wird durch die Ausbildung der geneigten Flächen 10 und 11 erreicht. Durch diese Zentrierung wird auch eine Verdrehung bewirkt, so dass sich die Nocken 16 in den Nuten 7 zentrieren.The cover described is designed in such a way that the cover 2 is self-centering. This is achieved by the formation of the inclined surfaces 10 and 11. This centering also causes rotation, so that the cams 16 are centered in the grooves 7.

Im weitern weist die beschriebene Abdeckung die Eigenschaft auf, die Möglichkeit weitgehend auszuschalten, dass der Deckel oder der Rost 2 durch Verkehrseinflüsse aus ihrer Lage verschoben oder entfernt werden können. Die kleinen Bewegungen, welche die Lagerfläche 10 des Rahmens 1 und die Auflagefläche 11 des Deckels 2 gegeneinander ausführen, bewirken in einem gewissen Ausmass eine Selbstreinigung, so dass Probleme bei eingedrungenem Schmutz kaum auftreten können.Furthermore, the cover described has the property of largely eliminating the possibility that the cover or the grate 2 can be moved or removed from its position by traffic influences. The small movements that the bearing surface 10 of the frame 1 and the bearing surface 11 of the cover 2 perform against each other to a certain extent cause self-cleaning, so that problems with penetrating dirt can hardly occur.

Claims (5)

  1. A covering for an opening in road complexes, squares, courtyards and bases, with a frame (1) and a cover (2) or a grate inserted in the same, which has, on its bottom side, ribs (15), as well as with effective means (7,16) between the frame (1) and the cover (2) or grate for fixing the mutual position of the cover (2) or the grate and the frame (1), wherein a contact surface (11) of the cover (2) or the grate, as well as at least one bearing surface (10) on the inner side of the frame (1), are constructed as conical, downwardly and inwardly directed fitting faces, characterised in that the means consist of noses (16), arranged on the periphery of the cover (2) or grate and integrally connected to the ribs (15), as well as grooves (7) arranged on the frame (1) for accommodating the same, and the bearing surface (10) is formed by the upper side of a supporting flange (3).
  2. A covering according to claim 1, characterised in that the noses (16) have a roof-shaped front side (9'), which cooperates with a correspondingly formed roof-shape groove base (9).
  3. A covering according to claim 1 or 2, characterised in that the noses (16) and the grooves (7) have substantially vertical side walls (8',8).
  4. A covering according to one of claims 1 to 3, characterized in that the ribs (15) cross in the form of a grid.
  5. A covering according to one of claims 1 to 4, characterised in that in strips of the ribs (15) there are provided holes (20).
EP88101151A 1987-02-02 1988-01-27 Cover for an opening with a lid or grating inserted in a frame Expired - Lifetime EP0277587B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88101151T ATE67542T1 (en) 1987-02-02 1988-01-27 COVER FOR AN OPENING WITH A LID OR GRID INSERTED IN A FRAME.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB878702222A GB8702222D0 (en) 1987-02-02 1987-02-02 Roadway furniture
GB8702222 1987-02-02

Publications (2)

Publication Number Publication Date
EP0277587A1 EP0277587A1 (en) 1988-08-10
EP0277587B1 true EP0277587B1 (en) 1991-09-18

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EP88101151A Expired - Lifetime EP0277587B1 (en) 1987-02-02 1988-01-27 Cover for an opening with a lid or grating inserted in a frame

Country Status (8)

Country Link
US (1) US4861186A (en)
EP (1) EP0277587B1 (en)
AT (1) ATE67542T1 (en)
AU (1) AU600548B2 (en)
DE (1) DE3864842D1 (en)
ES (1) ES2024558B3 (en)
GB (1) GB8702222D0 (en)
PT (2) PT86681A (en)

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Publication number Priority date Publication date Assignee Title
GB8907060D0 (en) * 1989-03-29 1989-05-10 Craig Philip Chamber and method of making same,liner and cover therefor
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Also Published As

Publication number Publication date
AU1098988A (en) 1988-08-04
EP0277587A1 (en) 1988-08-10
ATE67542T1 (en) 1991-10-15
ES2024558B3 (en) 1992-03-01
US4861186A (en) 1989-08-29
PT86681A (en) 1989-02-28
DE3864842D1 (en) 1991-10-24
AU600548B2 (en) 1990-08-16
PT8825T (en) 1993-12-31
GB8702222D0 (en) 1987-03-11

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