EP3631103B1 - Chambre d'inspection - Google Patents

Chambre d'inspection Download PDF

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Publication number
EP3631103B1
EP3631103B1 EP18725852.0A EP18725852A EP3631103B1 EP 3631103 B1 EP3631103 B1 EP 3631103B1 EP 18725852 A EP18725852 A EP 18725852A EP 3631103 B1 EP3631103 B1 EP 3631103B1
Authority
EP
European Patent Office
Prior art keywords
inspection chamber
dome
chamber part
cavity
part 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.)
Active
Application number
EP18725852.0A
Other languages
German (de)
English (en)
Other versions
EP3631103A1 (fr
Inventor
Günter Brümmer
Marco W.J. BESTEN
Dirk Jan Haitjema
Alpay AYDEMIR
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.)
Wavin BV
Original Assignee
Wavin BV
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 Wavin BV filed Critical Wavin BV
Publication of EP3631103A1 publication Critical patent/EP3631103A1/fr
Application granted granted Critical
Publication of EP3631103B1 publication Critical patent/EP3631103B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/02—Manhole shafts or other inspection chambers; Snow-filling openings; accessories
    • E03F5/024—Manhole shafts or other inspection chambers; Snow-filling openings; accessories made of plastic material
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/02—Manhole shafts or other inspection chambers; Snow-filling openings; accessories
    • E03F5/027—The bottom made of prefabricated segments

Definitions

  • This disclosure relates to a part of an inspection chamber, to an inspection chamber, and to methods of producing these.
  • Inspection chambers are frequently placed in ground holding groundwater. Consequently, they are exposed to groundwater pressure over extensive periods of time. This exposure may eventually lead to situations wherein the functional properties of an inspection chamber are negatively affected. In general, there is a desire to increase the longevity of an inspection chamber.
  • a shaft which is particularly stable from a static point of view and can be changed depending on the application, has a honeycomb or grid-shaped ribbing under the shaft floor with an outer rib running closed in the form of a ring, from which the locking ring and the cylindrical main part of the shaft extend radially arranged radial ribs upwards.
  • a plastic hollow ring that can be filled with concrete can be provided.
  • the locking ring can be designed as a separate component or integrally formed on the shaft.
  • An inspection chamber part according to the present invention is defined by claim 1.
  • the shape of said circumference of at least a part of the cavity wall is maintained for a longer period of time. This increases the inspection chamber part's longevity.
  • the circumference may be the circumference of the entire cavity wall or it may be the circumference of a part thereof, for example, of a dome-shaped part of the cavity wall.
  • the reinforcement member is not a part of the cavity wall.
  • the reinforcement member may, however, also fully or partially be a part of the cavity wall itself.
  • the cavity's configuration to receive groundwater is to be understood as a configuration which is provided despite the presence of the reinforcement member.
  • groundwater may, hence, circulate between the cavity and outside of the inspection chamber part.
  • the reinforcement member does not block the groundwater passage in and out of the cavity.
  • a groundwater pressure inside of the cavity (when the inspection chamber part is placed in ground holding groundwater) filled with groundwater and outside of the part is therefore substantially the same.
  • the reinforcement member is therefore preferably not asymmetrically exposed to groundwater pressure. This increases the longevity thereof. Further, the cavity wall maintains its role of serving as an important pressure barrier for resisting the groundwater. This increases the longevity of the inspection chamber part.
  • the central dome-shaped section combined with the surrounding sections are particularly advantageous as the surrounding concave and/or dome-shaped sections may increase the stiffness of the circumference of the central dome-shaped section.
  • this configuration improves upon a fragile connection area between a single dome-shaped section and a base part side wall which might exist if the cavity wall were constituted of a single dome-shaped section. Therefore, the durability, especially regarding the resistance against shape deformations of the central dome-shaped section, may be higher than the analogous durability of a cavity wall which consists of one dome-shaped section.
  • the inspection chamber part is preferably a footing and/or a base part of an inspection chamber.
  • an inspection chamber When an inspection chamber is put in place for use, it is oriented such that it rests on the footing and/or base part (i.e., the inspection chamber part).
  • the cavity is oriented during use of the inspection chamber part such that ground water that enters the cavity is in contact with the cavity wall such that the cavity wall prevents the ground water from rising any further.
  • the reinforcement member is preferably configured to increase stiffness of the cavity wall.
  • the reinforcement may, alternatively or in addition thereto, be configured to increase the stiffness of any other section of the inspection chamber part such as a sidewall or a base part directly or indirectly connected to the cavity wall.
  • the cavity wall and the reinforcement member are integrally formed.
  • the cavity wall and the reinforcement are continuously connected, i.e., they are made as one piece.
  • the efficiency in producing the inspection chamber part may thus be increased.
  • the inspection chamber part may also be integrally formed with any other part of an inspection chamber.
  • the entire inspection chamber comprising the part may, but need not, be formed as one piece.
  • the part further comprises a side wall, and at least one of the surrounding concave and/or dome-shaped sections is located between the side wall and the central dome-shaped section and connects these.
  • This is advantageous as the durability is improved, especially at the region between the sidewall and the central dome-shaped section.
  • all of the surrounding concave and/or dome-shaped sections are located between the side wall and the central dome-shaped section and connect these.
  • the central dome-shaped section is larger than each of the surrounding concave and/or dome-shaped sections.
  • the central dome-shaped section is larger than the sum of all of the surrounding concave and/or dome-shaped sections.
  • the reinforcement member may comprise at least one or may comprise all of the surrounding concave and/or dome-shaped sections.
  • the reinforcement member may be a part of the cavity wall.
  • the part of the cavity wall referred to with respect to the additional stiffness for maintaining the shape of a circumference thereof is not the entire cavity wall itself but a "true" part thereof.
  • the circumference of the part of the cavity wall, the shape of which is maintained may then, e.g., be the circumference of a central dome-shaped section.
  • the maximal width (a) of each of the surrounding concave and/or dome-shaped sections is larger than a maximal thickness (t) of the cavity wall.
  • the "maximal width” refers to the width of the section's cavity configured to receive a fluid such as groundwater. This further increases resistance against pressure-induced shape deformations and, hence, the longevity of the inspection chamber part.
  • At least one of the dome-shaped sections has the shape of a part of a sphere. It is especially preferable for the central dome-shaped section to have the shape of a part of a sphere. Alternatively, the shape may resemble the shape of a part of a sphere. For example, the shape may comprise polygonal parts which together approximate the shape of a part of a sphere. According to some embodiments, all of the dome-shaped sections have the shape of a part of a sphere (or a "similar" shape). The shape of a part of a sphere (or a shape approximating this shape) especially promotes the longevity the inspection chamber part, e.g., as tension resulting from applied pressure is distributed particularly homogeneously.
  • the cavity wall is preferably at least partially concave-shaped or hollowed-inward shaped.
  • the reinforcement member may comprise (or consist of) a reinforcement plate which is connected to another section of the inspection chamber part.
  • the reinforcement member may comprise the reinforcement plate and additionally comprise a part or parts of the cavity wall.
  • the reinforcement plate may have a substantially flat shape but may also have a different shape, e.g., the shape of a part of a sphere.
  • the reinforcement member may also have stiffening members such as stiffening ribs on it.
  • a reinforcement plate as an additional reinforcement member is particularly useful when the inspection chamber part is to be used at deeper groundwater levels, e.g., between 3 and 5 meters.
  • the cavity wall may also provide enough stiffness without an additional reinforcement plate.
  • the reinforcement plate is connected to the another section of the inspection chamber part by a weld.
  • the inspection chamber part may comprise a side wall, and the reinforcement plate may be connected to the side wall by means of a weld.
  • the reinforcement plate comprises an opening configured to let fluid pass through the reinforcement plate.
  • the reinforcement plate preferably comprises a plurality (i.e., two or more) such openings. This is a possibility of realizing the cavity's configuration to receive a fluid such as groundwater (despite the reinforcement member's presence).
  • the inspection chamber part is preferably configured to allow fluid flow in and out of the cavity along one or several of the surrounding concave and/or dome-shaped section(s). This may be realized, e.g., by matching the positions of the surrounding concave and/or dome-shaped sections with openings in the reinforcement plate. In particular, only one, two, several or all of the surrounding concave and/or dome-shaped sections may allow for a fluid communication. In other words, each of the surrounding concave and/or dome-shaped sections may be understood to constitute an "open” or a "closed pocket".
  • the reinforcement plate may, e.g., not extend as far so as to cover the surrounding concave and/or dome-shaped sections.
  • the reinforcement plate may be connected to the cavity wall at positions between the central dome-shaped part and the surrounding concave and/or dome-shaped parts.
  • This connection may e.g. be one or several welds, and the connection may not prevent fluid communication between the "central cavity” defined between the central dome-shaped part and the reinforcement plate and the one or several "peripheral cavities” at least partially confined by the surrounding concave and/or dome-shaped part(s).
  • the reinforcement plate and/or the cavity wall may be provided with at least one stiffening rib. This further increases the stiffness, thus additionally promoting the longevity of the inspection chamber part.
  • the inspection chamber part may further comprise a plate, wherein the cavity wall is the cavity-facing wall of said plate.
  • Said plate may, e.g., be curved so as to conform take on the shape of a part of a sphere or a similar shape, i.e., an "approximating" shape, for example, including polygonal sections jointly approximating a partial sphere-like shape.
  • a maximum height of the central dome-shaped section (h) is equal to or larger than 2% of a maximal width (d) of a contour of the central dome-shaped section (h/d ⁇ 0.02), wherein the maximum height is defined as a maximum shortest distance between a point on the cavity wall and a surface comprising the contour of the central dome-shaped section.
  • the maximal width of the contour of the central dome-shaped section is typically the diameter of a circle-shaped surrounding contour.
  • the "maximum height of the cavity” may be the maximum distance from the surface containing the contouring circumference circle to a point on the sphere, a part of which constitutes the shape of the cavity wall.
  • a maximal angle ⁇ between points on the contour may be equal to or smaller than 90°, the angle ⁇ being defined with respect to the center of the sphere, a part of which constitutes the shape of the cavity wall.
  • the cavity wall may comprise a largest dome-shaped section, and the largest closed contour may be a contour edge of the largest dome-shaped section.
  • the height (h) may lie in a range of 0.02 to 0.35 times the maximal width (d) of the contour (0.02 ⁇ h/d ⁇ 0.35).
  • the height (h) may lie in a range of 0.02 to 0.35 times the maximal width (d) of the contour (0.02 ⁇ h/d ⁇ 0.35).
  • the value d/h preferably lies in a range between 3 and 12 (3 ⁇ d/h ⁇ 12)) when the inspection chamber part (or of the inspection chamber with said part) lies in a range of 1100 to 1300 cm (preferably, around 1250 cm).
  • the value d/h preferably lies in a range between 4 and 15 (4 ⁇ d/h ⁇ 15)) when the inspection chamber part (or of the inspection chamber with said part) lies in a range of 900 to 1100 cm (preferably, around 1000 cm).
  • the value d/h preferably lies in a range between 12 and 41 (12 ⁇ d/h ⁇ 41)) when the inspection chamber part (or of the inspection chamber with said part) lies in a range of 800 to 900 cm (preferably, around 850 cm).
  • the disclosure relates to inspection chamber parts including any one or any combination of the formerly discussed features (in so far compatible) which is mountable to another component of an inspection chamber. It also relates to inspection chamber parts including any one or any combination of the formerly discussed features (in so far compatible) which are mounted to another component of an inspection chamber.
  • "Mounted” can in this context, e.g., be understood as reversibly or fixedly mounted to or as integrally connected with another part.
  • the inspection chamber part may at least partially be made by roto-molding. In fact, the entire inspection chamber part may be produced by roto-molding. However, the disclosure also relates to inspection chamber parts made by other methods, for example, involving injection molding.
  • the reinforcement member may comprise polypropylene and/or polyethylene.
  • the disclosure further also relates to an inspection chamber comprising an inspection chamber part according to any one of the formerly discussed embodiments.
  • the inspection chamber may be integrally formed (as one piece) with the inspection chamber part or it may comprise additional separate pieces.
  • the inspection chamber may at least partially be made by roto-molding. In fact, the entire inspection chamber may be produced by roto-molding.
  • the disclosure also relates to inspection chambers made by other methods, for example, involving injection molding.
  • the disclosure relates to a method for manufacturing an inspection chamber part or an inspection chamber according to according to any one of the formerly discussed embodiments.
  • Fig. 1 is a side view (partial cross-section) view of an embodiment of an inspection chamber part 1 for placing in ground holding ground water.
  • the part 1 comprises a cavity 2 for receiving ground water. Further, the part 1 comprises a plate, one side of which constitutes a cavity wall 10 which partially confines the cavity 1. The cavity wall 10 is configured to retain the ground water in the cavity 2.
  • the part 1 of Fig. 1A comprises reinforcing members 3 for providing additional stiffness for maintaining the shape of the cavity 2.
  • the cavity wall 10 comprises a central dome-shaped section 11, and the additional stiffness in particular promotes maintaining the shape of the circular-shaped contour of a "true" part of the cavity, the central domes-shaped section 11.
  • the reinforcing members 3 are a part of the cavity wall 10.
  • the cavity wall 10 comprises the central dome-shaped section 11 as well as surrounding concave shaped sections forming reinforcement members 3.
  • the disclosure also relates to embodiments wherein the reinforcement member comprises or consists of a component not part of the cavity wall.
  • Fig. 1B is a side view (partial cross-section) of another embodiment of an inspection chamber part 1.
  • the components of the part 1 are identical to those of the embodiment of Fig. 1A and are, hence, denoted by the same reference signs.
  • This embodiment comprises an additional reinforcement member 4 in the form of a plate welded onto the remaining part of the inspection chamber part 1.
  • both the reinforcement members 3, forming a part of the cavity wall 10 (surrounding concave shaped sections 3), as well as a reinforcement plate 4 are provided as a "reinforcement member".
  • the respective inspection chamber parts 1 also comprise a side wall 5. All of the surrounding concave shaped sections 3 are located between the side wall 5 and the central dome-shaped section. Further, the surrounding concave shaped section 3 (i.e., the reinforcement members 3) connect the side wall 5 and the central dome-shaped section 11.
  • Fig. 1A and 1B comprise the surrounding concave shaped sections 3 with maximal widths (a) larger than the thickness (t) of the cavity wall 10.
  • the cavity wall 10 of the embodiments of Figs. 1A and 1B is concave/hollowed-inward shaped when seen from below (i.e., as seen from the cavity 2).
  • Figs. 2A and 2B are partial perspective views of the embodiments of Figs. 1A and 1B .
  • a fluid such as ground water can flow in and out of the cavity 2 through fluid ports/openings 40.
  • the ports 40 constitute openings configured to let fluid pass the reinforcement plate 4.
  • a fluid may thus flow in and out of the cavity through the "surrounding cavities" associated with the surrounding concave shaped sections 3 of the cavity wall 10.
  • Fig. 5 shows a number of geometric values describing an embodiment of an inspection chamber part.
  • the thickness t of the cavity wall 10 (a thickness of a plate in the case of this embodiment) is smaller or equal to a maximal width a of the surrounding concave shaped sections/reinforcing members 3.
  • the cavity wall 10 comprises a central dome-shaped section 11.
  • the central dome-shaped section 11 has the shape of a part of a sphere.
  • a height h of the central dome-shaped section 11 is ⁇ than the thickness t of the cavity wall 10 and ⁇ than the radius ⁇ of the sphere, part of which describes the shape of the cavity wall central dome-shaped section 10.
  • Figs. 1B and 2B are manufactured integrally, i.e., as one piece, by roto-molding.
  • Fig. 3A depicts a cross-sectional view of an inspection chamber 6.
  • This inspection chamber 6 comprises an inspection chamber part 1.
  • Fig. 3B is a top view of the inspection chamber 6, and
  • Fig. 3C is a sectional view along the line B-B in Fig. 3B .
  • the inspection chamber part 1 at the lower end of the inspection chamber 6 can be seen in Fig. 3C .
  • the inspection chamber part 1 may, for example, be formed as the one of Figs. 1A and 2A or as the one of Figs. 1B and 2B .
  • the inspection chamber part 1 is an integral part of the inspection chamber 6, at least in so far as the side walls 5 of the part 1 and the remainder of the inspection chamber 6 are made as one piece (formed by roto-molding).
  • this disclosure also relates to inspection chamber parts 1 which are made separately and are removable or fixedly mountable or mounted to another component of an inspection chamber.
  • Figs. 4A and 4B show a cross-sectional view from below and (at least partially) from above, respectively, of an example of an inspection chamber part 1.
  • This example comprises a reinforcement member in the form of a reinforcement plate 4 which is welded onto the base part of the inspection chamber part 1.
  • the reinforcement member 4 is provided with openings 40 for allowing fluid to pass in an outside of the cavity 2.
  • the cavity wall is made of a single dome-section which is hollowed inward/concave-shaped (when seen from below, i.e., from the side of the cavity 2) and has the shape of a part of a sphere (see Fig. 4B ).

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Measuring Volume Flow (AREA)
  • Sewage (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Revetment (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
  • Road Signs Or Road Markings (AREA)

Claims (15)

  1. Partie de chambre d'inspection destinée à être placée dans un sol retenant de l'eau souterraine,
    la partie comprenant :
    une paroi latérale (5) ;
    une cavité (2) pour recevoir de l'eau souterraine et présentant une forme de cavité, la cavité (2) étant partiellement confinée par une paroi de cavité (10) pour retenir de l'eau souterraine dans la cavité (2) ; et
    un élément de renfort (3) pour fournir une rigidité supplémentaire afin de maintenir une forme d'une circonférence d'au moins une partie de la paroi de cavité (10) ;
    dans laquelle la paroi de cavité comprend une section centrale en forme de dôme (11) entourée par une pluralité de sections concaves et/ou en forme de dôme environnantes ;
    dans laquelle l'élément de renfort (3) comprend les sections concaves et/ou en forme de dôme environnantes ; et
    au moins une des sections concaves et/ou en forme de dôme environnantes est située entre la paroi latérale et la section centrale en forme de dôme (11) et relie la paroi latérale (5) et la section centrale en forme de dôme (11).
  2. Partie de chambre d'inspection selon la revendication 1, dans laquelle l'élément de renfort (3) est configuré pour augmenter une rigidité de la paroi de la cavité.
  3. Partie de chambre d'inspection selon l'une quelconque des revendications précédentes, dans laquelle la paroi de cavité (10) et l'élément de renfort (3) sont formés d'un seul tenant.
  4. Partie de chambre d'inspection selon la revendication 1, dans laquelle la section centrale en forme de dôme (11) est plus grande que chacune des sections concaves et/ou en forme de dôme environnantes.
  5. Partie de chambre d'inspection selon l'une quelconque des revendications précédentes, dans laquelle la largeur maximale (a) de chacune des sections en forme de dôme environnantes est supérieure à une épaisseur maximale (t) de la paroi de cavité (10).
  6. Partie de chambre d'inspection selon l'une quelconque des revendications précédentes, dans laquelle au moins une des sections en forme de dôme présente la forme d'une partie d'une sphère.
  7. Partie de chambre d'inspection selon l'une quelconque des revendications précédentes, dans laquelle la paroi de cavité (10) est au moins partiellement de forme concave et/ou de forme creusée vers l'intérieur.
  8. Partie de chambre d'inspection selon l'une quelconque des revendications précédentes, dans laquelle l'élément de renfort (3) comprend une plaque de renfort (4) qui est reliée à une autre section de la partie, dans laquelle la plaque de renfort (4) est de préférence reliée à la paroi latérale (5) au moyen d'une soudure.
  9. Partie de chambre d'inspection selon la revendication 8, dans laquelle la plaque de renfort (4) comprend une ouverture (40) configurée pour laisser du fluide passer par la plaque de renfort (4).
  10. Partie de chambre d'inspection selon la revendication 8 ou 9, configurée en outre pour permettre un écoulement de fluide dans et à l'extérieur de la cavité (2) le long d'au moins une des sections en forme de dôme environnantes.
  11. Partie de chambre d'inspection selon l'une quelconque des revendications précédentes, qui comprend une plaque, dans laquelle la paroi de cavité (10) est la paroi faisant face à la cavité de ladite plaque.
  12. Partie de chambre d'inspection selon la revendication 1, dans laquelle une hauteur maximale de la section centrale en forme de dôme (h) est égale ou supérieure à 2 % d'une largeur maximale (d) d'un contour de la section centrale en forme de dôme (h/d ≥ 0,02), dans laquelle la hauteur maximale est définie comme une distance maximale la plus courte entre un point sur la paroi de cavité (10) et une surface comprenant le contour de la section centrale en forme de dôme (11).
  13. Partie de chambre d'inspection selon la revendication 12, dans laquelle la section centrale en forme de dôme (11) présente la forme d'une partie de sphère, et un angle maximal α entre des points sur le contour est égal ou inférieur à 90°, l'angle α étant défini par rapport au centre de la sphère.
  14. Partie de chambre d'inspection selon la revendication 12 ou 13, dans laquelle la hauteur (h) se situe dans une plage de 0,02 à 0,35 fois la largeur maximale (d) du contour (0,02 ≤ h/d ≤ 0,35).
  15. Partie de chambre d'inspection selon l'une quelconque des revendications précédentes, qui est au moins partiellement réalisée par rotomoulage, et/ou,
    dans laquelle l'élément de renfort (3) comprend du polypropylène et/ou du polyéthylène.
EP18725852.0A 2017-05-31 2018-05-23 Chambre d'inspection Active EP3631103B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1042411A NL1042411B1 (en) 2017-05-31 2017-05-31 Inspection chamber part
PCT/EP2018/063484 WO2018219732A1 (fr) 2017-05-31 2018-05-23 Partie de chambre d'inspection

Publications (2)

Publication Number Publication Date
EP3631103A1 EP3631103A1 (fr) 2020-04-08
EP3631103B1 true EP3631103B1 (fr) 2022-12-21

Family

ID=59409710

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18725852.0A Active EP3631103B1 (fr) 2017-05-31 2018-05-23 Chambre d'inspection

Country Status (9)

Country Link
EP (1) EP3631103B1 (fr)
CN (1) CN110691882B (fr)
CO (1) CO2019014587A2 (fr)
DK (1) DK3631103T3 (fr)
EC (1) ECSP19091325A (fr)
MX (1) MX2019014333A (fr)
NL (1) NL1042411B1 (fr)
PL (1) PL3631103T3 (fr)
WO (1) WO2018219732A1 (fr)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4709723A (en) * 1986-07-17 1987-12-01 Hancor, Inc. Septic tank for alternative sewer systems
NL1010902C2 (nl) * 1998-12-24 2000-06-27 Wavin Bv Putbodemelement.
DE19961414C2 (de) * 1999-12-17 2002-06-27 Horst Hammes In die Erde einsetzbarer zylindrischer Schacht aus Kunststoff
NL2000409C2 (nl) * 2006-12-28 2008-07-01 Pipelife Nederland Bv Put en werkwijze voor het vervaardigen van een put met bodemsegmenten.
EP2000598A1 (fr) * 2007-06-04 2008-12-10 Ifw Manfred Otte GmbH Partie supérieure de regard
CN101509273A (zh) * 2008-02-15 2009-08-19 戚培发 复合型结构壁塑料检查井
EP2157251A1 (fr) * 2008-08-14 2010-02-24 Kessel GmbH Insert de fond pour un regard d'égout
CN201738430U (zh) * 2010-06-30 2011-02-09 沈家同 组合式塑料检查井
DE102012207426A1 (de) * 2012-05-04 2013-11-07 Wavin B.V. Erweiterungsring für einen Schachtdeckel
CN204803916U (zh) * 2015-06-05 2015-11-25 王全龙 Pvc管材组合式检查井

Also Published As

Publication number Publication date
PL3631103T3 (pl) 2023-03-20
BR112019025235A2 (pt) 2020-06-16
CO2019014587A2 (es) 2020-04-24
WO2018219732A1 (fr) 2018-12-06
CN110691882A (zh) 2020-01-14
EP3631103A1 (fr) 2020-04-08
ECSP19091325A (es) 2020-05-29
MX2019014333A (es) 2020-08-03
DK3631103T3 (da) 2023-01-16
CN110691882B (zh) 2021-07-20
NL1042411B1 (en) 2018-12-07

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