EP1329558A1 - Device for adjusting the height of a manhole cover to the street level - Google Patents

Device for adjusting the height of a manhole cover to the street level Download PDF

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Publication number
EP1329558A1
EP1329558A1 EP02001526A EP02001526A EP1329558A1 EP 1329558 A1 EP1329558 A1 EP 1329558A1 EP 02001526 A EP02001526 A EP 02001526A EP 02001526 A EP02001526 A EP 02001526A EP 1329558 A1 EP1329558 A1 EP 1329558A1
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EP
European Patent Office
Prior art keywords
shaft
manhole cover
cover
spacer elements
frame
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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.)
Withdrawn
Application number
EP02001526A
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German (de)
French (fr)
Inventor
Gudrun Mietz
Henning Dr. Richter
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to EP02001526A priority Critical patent/EP1329558A1/en
Publication of EP1329558A1 publication Critical patent/EP1329558A1/en
Withdrawn legal-status Critical Current

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    • 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
    • E02D29/1409—Covers for manholes or the like; Frames for covers adjustable in height or inclination

Definitions

  • the invention relates to a device for lifting Manhole covers for inspection shafts at street level.
  • the shafts usually consist of a cylindrical lower part and an adjacent shaft cone.
  • the manhole cover rests on the manhole cone from an annular, on the annular end face of the shaft cone resting on the frame and one in the frame insertable manhole cover. Between the frame and the shaft cone can still spacers arranged his. If, for example, a manhole cover is no longer is completely flush with the road surface a bump when driving over if the vehicle is on the Manhole cover attaches, causing the shaft to sink and thus the shaft cover is reinforced.
  • the object of the present invention is a device for precisely lifting a manhole cover to be specified at street level.
  • the invention provides a device with which lifting the manhole cover is exactly adaptable to the street level.
  • the Device spacers on the height adjustable can be, and preferably three of them the upper edge of the exposed shaft cone or spacer ring be applied. On these spacers the frame of the manhole cover is put on. Using of height-adjustable spacer elements, these are preferred adjusted in height so that the frame and the manhole cover later inserted into the frame exactly swearing with the road surface.
  • the device according to the invention also includes a formwork device, for example in the form of an inflatable, on the inner wall the shaft cone and / or any spacer ring as well as the frame of the manhole cover, which is fully adjustable Pillow or cylindrical body or double-walled cylindrical Jacket, which have filling tubes, the one Outlet opening in the created by the spacers annular cavity protrudes, and an inlet opening exhibit. Suitable, curable is over the filling tubes Potting compound can be pressed into the annular cavity. As soon as the pressed casting compound the frame of the manhole cover, which is preferably weighed down to street level has raised or with the help of height adjustable Spacers already preset at street level The frame begins to raise, the filling process completed. In the one around the manhole cover Recess of the road surface is conventional Filled bitumen mixture or a bitumen ring according to of patent application DE 199 19 025.9.
  • the drawing shows one arranged in a street 1 Revision shaft 2 in section, which is a lower part of the shaft 4 and a shaft cone 5, on which one Manhole cover 6, which consists of a lying on the cone 5 Frame 7 and one usable in the frame Manhole cover (not shown) exists. Between the The shaft cone and the frame can still have one or more Spacer rings (not shown) may be arranged.
  • a device 10 Around a manhole cover 6 to level 8 of the street 1, a device 10 according to the invention is used, which spacer elements 12, the height adjustable can be formed, and a formwork device 14 has, which all around close to the inner wall 16 and 17th the shaft cone 5 and the frame 7 can be created.
  • the Formwork device 14 consists of an inflatable cushion 18, which has a compressed air connection 19, and in the at least one, preferably a plurality of filling tubes 20, 21 are arranged are, whose two ends 22, 22 'and 24, 24' from the Cushions 18 are brought out. About the filling tubes 20, 21 is Potting compound can be supplied.
  • the device 10 is used as follows: If the Manhole cover 6 can be adapted to street level 8 should first be the road surface around the manhole cover exposed in a ring. Then multiple spacers 12, preferably three spacer elements placed the upper edge of the shaft cone 17. Using Height-adjustable spacers can be used in the height can be set so that the spacer elements placed frame 7 of the shaft cover 6 flush closes with the road surface. Then the pillow 18 in the of the shaft cone and the frame of the shaft cover enclosed space so inflated and inflated, that the pillow all around close to the inner wall 16 and 17 cone and frame creates and the filling tubes 20, 21 in by the spacers 12 between the cone and frame formed annular cavity 26 protrude. Over the filling pipes then the cavity 26 is under pressure with potting compound filled. The filling side of the filling pipes 20, 21 is symbolic represented by funnels 28, 30.
  • the pouring compound filling process is ended when the frame 7 of the manhole cover 6 up to street level is raised or if it is already preset at street level Frame begins to rise.
  • the frame is loaded with a weight, which ensures is that the cavity 26 is even with potting compound is filled and the manhole cover is not already already raised when the cavity is not completely filled becomes.
  • the casting compound After the casting compound has hardened, it is placed around the shaft excavated area of the pavement with bitumen mixture filled.
  • Materials such as repair concrete, Grouting mortar, silicate resins or similar are suitable.
  • the shaft cone 5 and the frame 7 of the Manhole cover 6 can be arranged one or more spacer rings his; then the spacers 12 are preferred between the top spacer and the frame 7 arranged.
  • the device 10 according to the invention is also at Shafts without shaft cone can be used equally.

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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)

Abstract

Device (10) for lifting shaft covers (6) of inspection shafts at street level (8) comprises spacer elements (12) between the upper edge of the shaft (2) and the shaft cover, a shell device (14) producing a seal between the inner wall (16, 17) of the shaft and the shaft cover, and at least one filling tube (20, 21) having one end protruding into the annular hollow space formed by the spacer elements between the shaft edge and the shaft cover and via which sealing compound is pressed into the hollow space to raise the shaft cover. Preferred Features: The spacer elements are adjustable. The shell device is a hollow, elastically inflatable component (18) designed as a cushion or a closed hollow cylindrical body or double-walled cylindrical casing made of elastic material.

Description

Die Erfindung betrifft eine Vorrichtung zum Anheben von Schachtabdeckungen von Revisionsschächten auf Straßenniveau.The invention relates to a device for lifting Manhole covers for inspection shafts at street level.

Revisionsschächte, insbesondere in Straßen mit bituminösen Straßendecken zeigen praktisch regelmäßig nach unterschiedlich langer Zeit und unterschiedlich langem Überfahren durch Kraftfahrzeuge Setzungserscheinungen. Die Schächte bestehen in der Regel aus einem zylindrischen Unterteil und einem sich daran nach oben anschließenden Schachtkonus. Auf dem Schachtkonus liegt die Schachtabdeckung auf, die aus einem ringförmigen, auf der ringförmigen Stirnfläche des Schachtkonus aufliegenden Rahmen und einem in den Rahmen einsetzbaren Schachtdeckel besteht. Zwischen dem Rahmen und dem Schachtkonus können noch Distanzringe angeordnet sein. Wenn beispielsweise eine Schachtabdeckung nicht mehr vollständig bündig mit der Straßenoberfläche ist, entsteht beim Überfahren ein Prellschlag, wenn das Fahrzeug auf der Schachtabdeckung aufsetzt, wodurch das Absinken des Schachtes und damit der Schachtabdeckung noch verstärkt wird. Bei Straßenemeuerungen wird häufig auf die vorhandene Straßendecke eine neue Bitumenschicht aufgebracht, wodurch eine Schachtabdeckung unter Fahrbahnniveau gerät. Solche Defekte in der Straßendecke müssen umgehend beseitigt werden, da sie sonst eine Beschädigung oder Ausweitung der Zerstörung der Bitumendecke zur Folge haben. Ferner entsteht durch die Prellschläge eine erhebliche Lärmbelästigung der Straßenanwohner. Die Behebung dieser Fehler wird üblicherweise in der Form durchgeführt, daß um die Schachtabdeckung herum die Straßendecke entfernt wird. Ist der Schacht um die Schachtabdeckung herum freigelegt, wird die Schachtabdekkung üblicherweise durch Unterlegen von vorgefertigten Distanzringen zwischen Schachtkonus und Schachtabdeckung möglichst bis auf das Niveau der Straßendecke angehoben. Der Freiraum um den Schacht wird wieder aufgefüllt und mittels Heißbifcumenmischung wird die Straßendecke wieder verschlossen. Da Distanzringe bestimmte Höhen aufweisen, ist ein exaktes Ausrichten der Schachtabdeckung mit dem Niveau der Straßendecke in der Regel nicht möglich.Inspection shafts, especially in streets with bituminous Road surfaces practically regularly show different a long time and overrun of different lengths by motor vehicle signs of settlement. The shafts usually consist of a cylindrical lower part and an adjacent shaft cone. The manhole cover rests on the manhole cone from an annular, on the annular end face of the shaft cone resting on the frame and one in the frame insertable manhole cover. Between the frame and the shaft cone can still spacers arranged his. If, for example, a manhole cover is no longer is completely flush with the road surface a bump when driving over if the vehicle is on the Manhole cover attaches, causing the shaft to sink and thus the shaft cover is reinforced. at Street renewals are often on the existing road surface applied a new layer of bitumen, resulting in a Manhole cover below road level. Such defects in the road surface must be removed immediately since they otherwise damage or expand the destruction of the bituminous roof. Furthermore arises from the Bouncing strikes cause considerable noise pollution for street residents. Correcting these errors is usually done in the shape that is carried out around the manhole cover the road surface is removed. Is the shaft around The shaft cover is exposed around the shaft cover usually by placing prefabricated spacer rings between the shaft cone and the shaft cover if possible raised to the level of the road surface. The Free space around the shaft is refilled and by means of The hot road bifcumen mixture is closed again. Since spacer rings have certain heights, it is an exact one Align the manhole cover with the level of the Road surfaces are generally not possible.

Die Aufgabe der vorliegenden Erfindung besteht darin, eine Vorrichtung zum genauen Anheben einer Schachtabdeckung auf Straßenniveau anzugeben.The object of the present invention is a device for precisely lifting a manhole cover to be specified at street level.

Diese Aufgabe wird durch die Erfindung gemäß Anspruch 1 gelöst.This object is achieved by the invention according to claim 1 solved.

Vorteilhafte und zweckmäßige Weiterbildungen der Aufgabenlösung sind in den Unteransprüchen angegeben.Advantageous and expedient further training of the task solution are specified in the subclaims.

Die Erfindung schafft eine Vorrichtung, mit der nach dem Herausheben der Schachtabdeckung die Schachtabdeckung exakt an das Straßenniveau anpaßbar ist. Hierzu weist die Vorrichtung Abstandselemente auf, die höhenverstellbar ausgebildet sein können und von denen vorzugsweise drei auf den oberen Rand des freigelegten Schachtkonus oder Distanzringes aufgebracht werden. Auf diese Abstandselemente wird der Rahmen der Schachtabdeckung aufgelegt. Bei Verwendung von höhenverstellbaren Abstandselementen werden diese vorzugsweise in der Höhe so eingestellt, daß der Rahmen und der später in den Rahmen eingesetzte Schachtdeckel exakt mit der Straßendecke fluchten. Die erfindungsgemäße Vorrichtung umfaßt ferner eine Schalungseinrichtung, beispielsweise in Form eines aufblasbaren, an die Innenwand des Schachtkonus und/oder evtl. vorhandenen Distanzringes sowie des Rahmens der Schachtabdeckung rundum anpaßbaren Kissens oder zylindrischen Körpers oder doppelwandigen zylindrischen Mantels, welche Füllrohre aufweisen, die eine Auslaßöffnung, die in den durch die Abstandselemente geschaffenen ringförmigen Hohlraum ragt, und eine Einlaßöffnung aufweisen. Über die Füllrohre ist geeignete, aushärtbare Vergußmasse in den ringförmigen Hohlraum preßbar. Sobald die eingepreßte Vergußmasse den Rahmen der Schachtabdeckung, welcher vorzugsweise beschwert wird, bis auf Straßenniveau angehoben hat oder bei mit Hilfe höhenverstellbarer Abstandselemente bereits auf Straßenniveau voreingestelltem Rahmen diesen anzuheben beginnt, wird der Einfüllvorgang beendet. In die um die Schachtabdeckung herum befindliche Ausnehmung der Straßendecke wird auf herkömmliche Weise Bitumenmischung eingefüllt oder ein Bitumenring gemäß der Patentanmeldung DE 199 19 025.9 eingebracht.The invention provides a device with which lifting the manhole cover is exactly adaptable to the street level. The Device spacers on the height adjustable can be, and preferably three of them the upper edge of the exposed shaft cone or spacer ring be applied. On these spacers the frame of the manhole cover is put on. Using of height-adjustable spacer elements, these are preferred adjusted in height so that the frame and the manhole cover later inserted into the frame exactly swearing with the road surface. The device according to the invention also includes a formwork device, for example in the form of an inflatable, on the inner wall the shaft cone and / or any spacer ring as well as the frame of the manhole cover, which is fully adjustable Pillow or cylindrical body or double-walled cylindrical Jacket, which have filling tubes, the one Outlet opening in the created by the spacers annular cavity protrudes, and an inlet opening exhibit. Suitable, curable is over the filling tubes Potting compound can be pressed into the annular cavity. As soon as the pressed casting compound the frame of the manhole cover, which is preferably weighed down to street level has raised or with the help of height adjustable Spacers already preset at street level The frame begins to raise, the filling process completed. In the one around the manhole cover Recess of the road surface is conventional Filled bitumen mixture or a bitumen ring according to of patent application DE 199 19 025.9.

Die Erfindung soll nachfolgend anhand der beigefügten Zeichnung, in der ein Ausführungsbeispiel dargestellt ist, näher erläutert werden.The invention will now be described with reference to the accompanying Drawing, in which an embodiment is shown, are explained in more detail.

Die Zeichnung zeigt einen in einer Straße 1 angeordneten Revisionsschacht 2 im Schnitt, welcher einen Schachtunterteil 4 und einen Schachtkonus 5 aufweist, auf dem eine Schachtabdeckung 6, die aus einem auf dem Konus 5 aufliegenden Rahmen 7 und einem in den Rahmen einsetzbaren Schachtdeckel (nicht dargestellt) besteht. Zwischen dem Schachtkonus und dem Rahmen können noch ein oder mehrere Distanzringe (nicht dargestellt) angeordnet sein.The drawing shows one arranged in a street 1 Revision shaft 2 in section, which is a lower part of the shaft 4 and a shaft cone 5, on which one Manhole cover 6, which consists of a lying on the cone 5 Frame 7 and one usable in the frame Manhole cover (not shown) exists. Between the The shaft cone and the frame can still have one or more Spacer rings (not shown) may be arranged.

Um eine Schachtabdeckung 6 auf das Niveau 8 der Straße 1 anzuheben, wird eine erfindungsgemäße Vorrichtung 10 verwendet, welche Abstandselemente 12, die höhenverstellbar ausgebildet sein können, und eine Schalungseinrichtung 14 aufweist, welche rundum dicht an die Innenwandung 16 und 17 des Schachtkonus 5 und des Rahmens 7 anlegbar ist. Die Schalungseinrichtung 14 besteht aus einem aufblasbaren Kissen 18, das einen Druckluftanschluß 19 aufweist, und in dem wenigstens ein, vorzugsweise mehrere Füllrohre 20, 21 angeordnet sind, deren beide Enden 22, 22' und 24, 24' aus dem Kissen 18 herausgeführt sind. Über die Füllrohre 20, 21 ist Vergußmasse zuführbar.Around a manhole cover 6 to level 8 of the street 1, a device 10 according to the invention is used, which spacer elements 12, the height adjustable can be formed, and a formwork device 14 has, which all around close to the inner wall 16 and 17th the shaft cone 5 and the frame 7 can be created. The Formwork device 14 consists of an inflatable cushion 18, which has a compressed air connection 19, and in the at least one, preferably a plurality of filling tubes 20, 21 are arranged are, whose two ends 22, 22 'and 24, 24' from the Cushions 18 are brought out. About the filling tubes 20, 21 is Potting compound can be supplied.

Die Vorrichtung 10 wird wie folgt eingesetzt: Wenn die Schachtabdeckung 6 an das Straßenniveau 8 angepaßt werden soll, wird zunächst die Straßendecke um die Schachtabdekkung herum ringförmig freigelegt. Dann werden mehrere Abstandselemente 12, vorzugsweise drei Abstandselemente, auf den oberen Rand des Schachtkonus 17 aufgelegt. Bei Verwendung höhenverstellbarer Abstandselemente können diese in der Höhe so eingestellt werden, daß der auf die Abstandselemente aufgelegte Rahmen 7 der Schachtabdeckung 6 bündig mit der Straßendecke abschließt. Danach wird das Kissen 18 in den vom Schachtkonus und dem Rahmen der Schachtabdeckung eingeschlossenen Raum derart eingebracht und aufgeblasen, daß sich das Kissen rundum dicht an die Innenwandung 16 und 17 von Konus und Rahmen anlegt und die Füllrohre 20, 21 in den durch die Abstandselemente 12 zwischen Konus und Rahmen gebildeten ringförmigen Hohlraum 26 ragen. Über die Füllrohre wird dann der Hohlraum 26 unter Druck mit Vergußmasse ausgefüllt. Die Einfüllseite der Füllrohre 20, 21 ist symbolisch durch Trichter 28, 30 dargestellt.The device 10 is used as follows: If the Manhole cover 6 can be adapted to street level 8 should first be the road surface around the manhole cover exposed in a ring. Then multiple spacers 12, preferably three spacer elements placed the upper edge of the shaft cone 17. Using Height-adjustable spacers can be used in the height can be set so that the spacer elements placed frame 7 of the shaft cover 6 flush closes with the road surface. Then the pillow 18 in the of the shaft cone and the frame of the shaft cover enclosed space so inflated and inflated, that the pillow all around close to the inner wall 16 and 17 cone and frame creates and the filling tubes 20, 21 in by the spacers 12 between the cone and frame formed annular cavity 26 protrude. Over the filling pipes then the cavity 26 is under pressure with potting compound filled. The filling side of the filling pipes 20, 21 is symbolic represented by funnels 28, 30.

Der Vergußmassen-Einfüllvorgang wird dann beendet, wenn der Rahmen 7 der Schachtabdeckung 6 bis auf Straßenniveau angehoben ist oder bei bereits auf Straßenniveau voreingestelltem Rahmen sich dieser anzuheben beginnt. Vorzugsweise wird der Rahmen mit einem Gewicht beaufschlagt, wodurch sichergestellt ist, daß der Hohlraum 26 gleichmäßig mit Vergußmasse gefüllt wird und die Schachtabdeckung nicht bereits schon bei unvollständig gefülltem Hohlraum angehoben wird.The pouring compound filling process is ended when the frame 7 of the manhole cover 6 up to street level is raised or if it is already preset at street level Frame begins to rise. Preferably the frame is loaded with a weight, which ensures is that the cavity 26 is even with potting compound is filled and the manhole cover is not already already raised when the cavity is not completely filled becomes.

Nach Aushärten der Vergußmasse wird der um den Schacht herum ausgehobene Bereich des Straßenbelages mit Bitumenmischung ausgefüllt.After the casting compound has hardened, it is placed around the shaft excavated area of the pavement with bitumen mixture filled.

Als Vergußmassen sind Werkstoffe wie Reparaturbeton, Vergußmörtel, Silicatharze o. ä. geeignet.Materials such as repair concrete, Grouting mortar, silicate resins or similar are suitable.

Zwischen dem Schachtkonus 5 und dem Rahmen 7 der Schachtabdeckung 6 können ein oder mehrere Distanzringe angeordnet sein; dann werden die Abstandselemente 12 vorzugsweise zwischen dem obersten Distanzring und dem Rahmen 7 angeordnet.Between the shaft cone 5 and the frame 7 of the Manhole cover 6 can be arranged one or more spacer rings his; then the spacers 12 are preferred between the top spacer and the frame 7 arranged.

Die erfindungsgemäße Vorrichtung 10 ist auch bei Schächten ohne Schachtkonus gleichermaßen einsetzbar.The device 10 according to the invention is also at Shafts without shaft cone can be used equally.

Claims (4)

Vorrichtung zum Anheben von Schachtabdeckungen von Revisionsschächten auf Straßenniveau, gekennzeichnet durch Abstandselemente (12) zur Verwendung zwischen dem oberen Rand des Schachtes (2) und der Schachtabdeckung (6) und durch eine Schalungseinrichtung (14), welche zur dichten Rundumanlage an die Innenwandung (16, 17). des Schachtes (2) und der Schachtabdeckung (6) ausgebildet ist und wenigstens ein Füllrohr (20, 21) aufweist, dessen eines Ende in den durch die Abstandselemente (12) gebildeten Ringhohlraum (26) zwischen Schachtrand und Schachtabdeckung ragt und über das Vergußmasse in den Hohlraum (26) preßbar ist zum Anheben der Schachtabdeckung.Device for lifting manhole covers of inspection shafts at street level, characterized by spacing elements (12) for use between the upper edge of the manhole (2) and the manhole cover (6) and by a formwork device (14) which is used for tight all-round installation on the inner wall (16 , 17). of the shaft (2) and the shaft cover (6) is formed and has at least one filling tube (20, 21), one end of which protrudes into the annular cavity (26) formed by the spacer elements (12) between the shaft edge and the shaft cover and over the casting compound in the cavity (26) can be pressed to lift the manhole cover. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Abstandselemente (12) verstellbar ausgebildet sind.Apparatus according to claim 1, characterized in that the spacer elements (12) are adjustable. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Schalungseinrichtung (14) ein hohles elastisch aufblasbares Bauteil (18) ist.Device according to claim 1, characterized in that the formwork device (14) is a hollow, elastically inflatable component (18). Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß das Bauteil (18) ein Kissen oder ein geschlossener hohlzylindrischer Körper oder doppelwandiger zylindrischer Mantel aus elastischem Material ist.Device according to claim 3, characterized in that the component (18) is a cushion or a closed hollow cylindrical body or double-walled cylindrical jacket made of elastic material.
EP02001526A 2002-01-18 2002-01-18 Device for adjusting the height of a manhole cover to the street level Withdrawn EP1329558A1 (en)

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EP02001526A EP1329558A1 (en) 2002-01-18 2002-01-18 Device for adjusting the height of a manhole cover to the street level

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EP02001526A EP1329558A1 (en) 2002-01-18 2002-01-18 Device for adjusting the height of a manhole cover to the street level

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7153057B1 (en) 2006-02-06 2006-12-26 Anthony Lucas Securable temporary manhole cover

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63251528A (en) * 1987-04-07 1988-10-19 Hinode Suido Kiki Kk Setting of cover-receiving frame for underground structure
JPH03228928A (en) * 1990-02-02 1991-10-09 Hakko Co Ltd Adjustment device for manhole cover height
JPH08218406A (en) * 1995-02-13 1996-08-27 Suzuki Chutetsu Kogyo Kk Mounting method of manhole lid frame
JPH09144041A (en) * 1995-11-17 1997-06-03 Nagashima Imono Kk Method of cover-height adjusting construction of manhole
DE19919025A1 (en) 1999-04-27 2000-11-02 Gudrun Mietz Method and device for repairing or replacing parts of a bituminous road surface
DE10102068A1 (en) * 2001-01-17 2002-08-01 Gudrun Mietz Lifting device for inspection shaft covers in road surfaces uses spacers to define ring chamber between shaft and cover, shuttering to seal space, and casting compound filled into space to raise cover

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63251528A (en) * 1987-04-07 1988-10-19 Hinode Suido Kiki Kk Setting of cover-receiving frame for underground structure
JPH03228928A (en) * 1990-02-02 1991-10-09 Hakko Co Ltd Adjustment device for manhole cover height
JPH08218406A (en) * 1995-02-13 1996-08-27 Suzuki Chutetsu Kogyo Kk Mounting method of manhole lid frame
JPH09144041A (en) * 1995-11-17 1997-06-03 Nagashima Imono Kk Method of cover-height adjusting construction of manhole
DE19919025A1 (en) 1999-04-27 2000-11-02 Gudrun Mietz Method and device for repairing or replacing parts of a bituminous road surface
DE10102068A1 (en) * 2001-01-17 2002-08-01 Gudrun Mietz Lifting device for inspection shaft covers in road surfaces uses spacers to define ring chamber between shaft and cover, shuttering to seal space, and casting compound filled into space to raise cover

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 013, no. 045 (M - 792) 2 February 1989 (1989-02-02) *
PATENT ABSTRACTS OF JAPAN vol. 016, no. 002 (M - 1197) 7 January 1992 (1992-01-07) *
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 12 26 December 1996 (1996-12-26) *
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 10 31 October 1997 (1997-10-31) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7153057B1 (en) 2006-02-06 2006-12-26 Anthony Lucas Securable temporary manhole cover

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