NL2016992A - Interlocking Panels for Drainage Structures - Google Patents

Interlocking Panels for Drainage Structures Download PDF

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Publication number
NL2016992A
NL2016992A NL2016992A NL2016992A NL2016992A NL 2016992 A NL2016992 A NL 2016992A NL 2016992 A NL2016992 A NL 2016992A NL 2016992 A NL2016992 A NL 2016992A NL 2016992 A NL2016992 A NL 2016992A
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NL
Netherlands
Prior art keywords
panel
connecting element
panels
receiving part
connection element
Prior art date
Application number
NL2016992A
Other languages
Dutch (nl)
Other versions
NL2016992B1 (en
Inventor
Adrianus Jacobus Schouten Michael
Dolf Hoekstra Hielke
Original Assignee
Pipelife Nederland 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 Pipelife Nederland Bv filed Critical Pipelife Nederland Bv
Priority to NL2016992A priority Critical patent/NL2016992B1/en
Priority to PCT/NL2017/050394 priority patent/WO2017217846A1/en
Priority to EP17732604.8A priority patent/EP3472397B1/en
Priority to PL17732604T priority patent/PL3472397T3/en
Publication of NL2016992A publication Critical patent/NL2016992A/en
Application granted granted Critical
Publication of NL2016992B1 publication Critical patent/NL2016992B1/en

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F1/00—Methods, systems, or installations for draining-off sewage or storm water
    • E03F1/002—Methods, systems, or installations for draining-off sewage or storm water with disposal into the ground, e.g. via dry wells
    • E03F1/005—Methods, systems, or installations for draining-off sewage or storm water with disposal into the ground, e.g. via dry wells via box-shaped elements

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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)
  • Sewage (AREA)
  • Panels For Use In Building Construction (AREA)

Abstract

The invention relates to a panel for a drainage box, the panel comprising a central portion comprising one or more openings for passage of liquid therethrough; side portions surrounding the central portion; and at least one connection element on each side portion, each connection element comprising a receiving portion and a protruding portion, the receiving portion shaped complementary to the protruding portion, such that a second panel having a similar connection element can secure to the first panel by connecting through engaging the respective connection elements, such that the protruding portion of the connection element of the first panel fits into the receiving portion of the connection element of the second panel, and the receiving portion of the connection element of the first panel receives the protruding portion of the connection element of the second panel.

Description

Interlocking Panels for Drainage Structures
Field of the invention
The invention relates to a panel for a drainage structure or a drainage box. Furthermore, the invention relates to a drainage structure comprising such a panel. Additionally, the invention relates to a method for manufacturing such a panel.
Background of the invention
Liquid receiving, storage and draining structures can be used for various purposes. Often, these structures are placed underground for temporarily storing and draining large amounts of water. The structure provides the possibility to collect and store large amounts of water, such as for instance occur as a result of heavy rain fall and the like.
The storage capacity thus obtained provides a temporary relief for the surface and underground, in such a way that flooding and erosion can be prevented or at least mitigated. The water collected in the structure may subsequently be released in a controlled manner, whereby a buffer function is obtained. The release may be carried out in several ways, such as discharge through a sewer, by means of infiltration into the underground etc.
Usually, such structures are built from a plurality of elements that are joined together. The elements typically form a containment structure for receiving the water, having openings towards the surrounding underground, and being surrounded by a textile or foil, such that only liquids may enter the containment structure, and any dirt or other larger elements are kept out.
The elements used for building up the structure can be modular units which allow for flexibility in building to different sizes. They can include columns and panels which fit together to hold the columns together. The panels are typically joined together with clips to secure the panels together and in the proper position. However, the building up of the structure with the panels, columns and clips can be time consuming having to orient everything properly and then ensure they are secured with separate pieces.
It would therefore be desirable to provide an improved structure for receiving and storing water that alleviated some or all of the above problems.
Summary of the invention
According to the invention, there is provided a panel for a drainage box, the panel comprising: a central portion comprising one or more openings for passage of liquid therethrough; side portions surrounding the central portion; and at least one connection element on each side portion, each connection element comprising: a receiving portion and a protruding portion, the receiving portion shaped complementary to the protruding portion, such that a second panel having a similar connection element can secure to the first panel by connecting through engaging the respective connection elements, such that the protruding portion of the connection element of the first panel fits into the receiving portion of the connection element of the second panel, and the receiving portion of the connection element of the first panel receives the protruding portion of the connection element of the second panel.
The panel has a central portion that allows passage of liquid through when the panel is used in a drainage box or drainage system. The openings may have any suitable shape. The central portion is at least partially enclosed by side portions, which may be closed or have one or more openings, similar to the central portion. On each side portion, at least one connection portion is provided, to connect a first panel with a second panel. The connection element comprises a protruding portion and a receiving portion. The receiving portion of the first panel receives a protrusion portion of the second panel, and vice versa. The receiving portion and the protruding portion are complementary in shape, i.e. for connecting a first and a second panel, the protruding portion of the first panel fits into the receiving portion of the second panel, and vice versa. Additional separate connecting elements will then be superfluous and connecting a plurality of panels to each other will be simplified. Preferably, each side portion comprises at least two connection elements.
According to an embodiment, the connection element is positioned and shaped to be connectable to a further connection element of a second panel to secure the panel with respect to the second panel in both a direction perpendicular to a plane of the panel and a direction in the plane of the panel.
The connection element is shaped such that the protrusion and the recess engage each other, preferably such that the first and second panels are fixed with respect to each other in the direction perpendicular to the plane of the panel and in the direction in the plane of the panel. Preferably, the connection element of the first panel and the connection element of the second panel are fixed with respect to each other in five directions, only being connectable to each other in one way, a sixth direction, for instance being fixed in four directions in the plane of the panel, and in the direction facing away from the second face of the panel, only being disconnectable in the direction facing away from the first face of the panel. Vice versa, the first and second panels are connectable by moving them towards each other in a direction facing away from the second face of the panel.
To this purpose, the protruding portion and/or the receiving portion may be at least partially tapered between a first face of the panel and a second face of the panel.
The at least one connection elements may be self-locking when secured to another connection element. The self-locking or self-centring property would be advantageous while connecting the panels. At the moment that the connection elements are starting to engage each other, there would be only one way of movement left, i.e. towards a fixation position wherein the panels are fully connected.
The side portion may extend to an edge of the panel, and the connection element is provided at the perpendicular side wall, such that the receiving portion extends from the edge into the side portion and the protruding portion extends from the edge beyond the side portion.
In this embodiment, the protruding portion has an outward protruding shape and the receiving portion has an inward extending shape, forming a recess in the side portion, wherein the shapes of the outward protrusion and the recess are similar.
The shape of the recess and the protrusion may be any shape suitable shape. Preferably, the protruding portion and the receiving portion are at least partially trapezoidal in shape.
The protruding portion and the receiving portion may be adjacent to each other, i.e. the protruding portion and the receiving portion may share a mutual edge.
The panel may comprises a polymer material. A polymer material is relatively easy to use in complex shapes, such as the panel with the connection element.
The invention also relates to a plurality of panels according to any of the preceding claims, wherein the panels are secured together through the engagement of connection elements, wherein a second panel with an identical connection element is secured to a first panel by connecting through engaging the respective connection elements such that the protruding portion of the connection element of the first panel is fitted into the receiving portion of the connection element of the second panel and the protruding portion of the connection element of the second panel is received in the receiving portion of the connection element of the first panel.
Preferably, adjacent panels are secured together at their respective side portions by at least two identical connection elements on each panel engaging each other to connect and secure the adjacent panels together.
The invention furthermore relates to a drainage structure with a top side, a bottom side and side walls extending between the top side and the bottom side, wherein the top side, bottom side and/or side walls comprise a plurality of panels according to any of the preceding claims, wherein the panels are secured together by means of their respective connection elements.
Moreover, the invention relates to a method of manufacturing a panel for a drainage box, the method comprising: forming a central portion with one or more openings for the passage of liquid therethrough; and forming side portions provided with at least one connection element, wherein the connection element comprises a receiving portion and a protruding portion, the receiving portion shaped complementary to the protruding portion such that the connection element can secure to another identical connection element.
According to an embodiment, the steps of forming a central portion and forming side portions with at least one connection element are performed simultaneously.
Preferably, the panel is formed through injection moulding.
Brief description of the several views of the figures
The invention will be described further with respect to embodiments shown in the drawings.
Figure la shows top view of a panel for a drainage structure.
Figure lb shows a perspective view of the panel of Figure la.
Figure lc shows a side view of the panel of Figure la.
Figure 2a shows a top view of two panels being connected together at their connection elements.
Figure 2b shows a perspective view of the panels of Figure 2a connected together.
Detailed Description
Figure la shows top view of a panel 10, Figure lb shows a perspective view of the panel 10, and Figure lc shows a side view of the panel 10, which can be used as a part of a drainage box or drainage structure, such as a bottom panel, forming a bottom side, for support of the drainage structure or as a supporting surface for a subsequent set of columns (not shown) placed on a first drainage box, or as a top panel, forming a top side, closing the drainage structure.
The panel 10 includes a central portion 12 with openings 13, side portions 14 having long sides 14a and short sides 14b, a first face 16, a second face 17, column engagement portions 18 and connection elements 20 on each side.
In this embodiment, the long sides 14a are twice as long as the short sides 14b, though other embodiments could have a different configuration. The openings 13 extend from the first face 16 to the second face 17 such that liquid is able to travel through the panel 10. The panel 10 includes eight column engagement portions 18, though other panels 10 could include more or fewer column engagement portions 18.
Each side 14a, 14b is provided with connection elements 20 that each include a receiving portion 22 and a protruding portion 24. The receiving portion 22 is formed as a transversal recess extending into the side 14a, 14b, and the protruding portion 24 is formed as a transversal protrusion extending from the side 14a, 14b.
Each side 14a, 14b extends to an edge 15a, 15b of the panel, forming a perpendicular side wall of the side portion. The connection element 20 is provided at the perpendicular side wall, such that the receiving portion 22 extends from the edge 15 into the side 14 and the protruding portion 24 extends from the edge 15 beyond the side 14. In this embodiment, the protruding portion has an outward protruding shape and the receiving portion has an inward extending shape, forming a recess in the side portion, wherein the shapes of the outward protrusion and the recess are similar.
The receiving portion 22 and the protruding portion 24 are complementary in shape, and in this embodiment are at least partially trapezoidal in shape, though they can take other forms and shapes in other embodiments, such as rectangular or round, or a combination thereof. The connection elements 20 are at least partially tapered between the first face 16 and the second face 17, having a tapered edge 26, as can be seen in Figure lc. The tapered edge 26 is a mutual edge, as the receiving portion 22 and the protruding portion 24 are adjacent. In this embodiment, the long sides 14a each include four connection elements 20 and the short sides 14b each include two connection elements 20, though other embodiments could include more or fewer connection elements 20 on each side 14a, 14b. Typically, each side 14a, 14b includes at least one connection element 20.
Each connection element 20 is identical. Due to complementary paired receiving portion 22 and protruding portion 24, each connection element 20 can freely mate with any other identical connection element 20 without regard for gender, alignment, orientation, etc.
The panel 10 can be formed of a plastic material, or another material which has sufficient strength. For example, panel 10 could be formed as one integral piece through injection moulding or another suitable production method. If injection moulding is used, the at least partial tapering between first face 16 and second face 17 could help with an improved clearance and release from the mould.
Figure 2a shows a view of two panels 10 being connected together at their connection elements 20, and Figure 2b shows a perspective view of panels 10 connected together.
The panels 10 are connected together on their long sides 14a to secure together in the same plane through four connection elements 20. The panels 10 are connected together, by aligning the connection elements 20 of one panel with the connection elements 20 of the other panel 10 and moving in a direction perpendicular to the plane of the panel 10, as indicated by arrows 31, causing the connection elements 20 of one panel to slide into the connection elements 20 of the other panel 10.
The connection elements 20 are secured together such that the protruding portion 24 of one connection element 20 is slid into the receiving portion 22 of the other element and vice versa. This secures the panels 10 together in the same plane. The panels 10 are further aligned and secured together in the perpendicular direction by the at least partial tapering of the connection elements 20. Thus, the securing of the connection elements 20 of the respective panels 10 ensures that the panels 10 are connected and secured in the direction in the plane of the panel and in the direction perpendicular to the plane of the panel. The shape and placement of the connection elements 20 can also ensure that they are self-locking, to hold panels 10 together once engaged. The self-locking may be caused by a narrowing protruding portion to the bottom of the connection element while a top of the receiving portion may be wider than a bottom of the receiving portion (seen in a vertical direction). When the portions slide vertically into each other the portions will automatically slide towards each other in a horizontal direction and the protruding portion 24 may slide automatically into the receiving portion 22.
By using identical connection elements 20 with complementary paired receiving portions 22 and protruding portions 24, the panels 10 can be easily secured together, freely mounting any connection element 20 to any other connection element. This allows for easy connection, making time-consuming aligning and orienting superfluous, for example, to mate a male element with a female element. Additionally, this allows for connecting a plurality of panels 10 to form complex and/or lengthy drainage structures more easily and quickly. By making time-consuming positioning and orientation superfluous due to the identical connection elements 20 which can secure to any other connection element, the panels 10 can be easily and simply secured together.
As mentioned earlier, past modular units for building up drainage structures typically required proper orientation and alignment for joining together, and further required additional components such as clips to actually hold and secure together. The panels 10 with the connection elements 20 allow for securing together in any orientation without the need for any additional securing parts, making for a more efficient and simple assembly process of a drainage structure.
While the invention has been described with reference to exemplary embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims (14)

1. Paneel (10) voor een drainagebox, het paneel omvattende: - een centraal deel (12) omvattende een of meer openingen (13) voor de passage van vloeistof daardoorheen; - zijdelen (14) die het centrale deel omringen; en - ten minste een verbindingselement (20) aan elk zijdeel, waarbij elk verbindingselement omvat: - een ontvangend deel (22) en een uitstekend deel (24), waarbij het ontvangende deel complementair gevormd is aan het uitstekende deel, zodat een tweede paneel met eenzelfde verbindingselement kan worden vastgemaakt aan het eerste paneel door verbinding door het aangrijpen van de respectieve verbindingselementen, zodat het uitstekende deel van het verbindingselement van het eerste paneel in het ontvangende deel van het verbindingselement van het tweede paneel past, en het ontvangende deel van het verbindingselement van het eerste paneel het uitstekende deel van het verbindingselement van het tweede paneel ontvangt.Panel (10) for a drainage box, the panel comprising: - a central part (12) comprising one or more openings (13) for the passage of liquid therethrough; - side portions (14) that surround the central portion; and - at least one connecting element (20) on each side part, each connecting element comprising: - a receiving part (22) and a projecting part (24), the receiving part being complementary to the projecting part, so that a second panel with the same connecting element can be attached to the first panel by connection by engaging the respective connecting elements, so that the protruding part of the connecting element of the first panel fits into the receiving part of the connecting element of the second panel, and the receiving part of the connecting element of the first panel receives the protruding part of the connecting element of the second panel. 2. Paneel volgens conclusie 1, waarbij het verbindingselement is gepositioneerd en gevormd om verbindbaar te zijn met een verder verbindingselement van een tweede paneel om het paneel ten opzichte van het tweede paneel te zekeren in zowel een richting loodrecht op een vlak van het paneel als in een richting in het vlak van het paneel.The panel of claim 1, wherein the connecting element is positioned and configured to be connectable to a further connecting element of a second panel to secure the panel relative to the second panel in both a direction perpendicular to a plane of the panel and in a direction in the plane of the panel. 3. Paneel volgens conclusie 1 of 2, waarbij het zijdeel zich uitstrekt tot een loodrechte zijwand die een rand van het paneel vormt, en het verbindingselement is voorzien aan de loodrechte zijwand, zodat het ontvangende deel zich uitstrekt van de rand in het zijdeel, en het uitstekende deel zich uitstrekt van de rand voorbij het zijdeel.Panel according to claim 1 or 2, wherein the side part extends to a perpendicular side wall that forms an edge of the panel, and the connecting element is provided on the perpendicular side wall, so that the receiving part extends from the edge in the side part, and the protruding part extends from the edge beyond the side part. 4. Paneel volgens een der voorgaande conclusies, waarbij het uitstekende deel en het ontvangende deel tenminste gedeeltelijk trapezoidaal gevormd is.4. Panel as claimed in any of the foregoing claims, wherein the protruding part and the receiving part are formed at least partially trapezoidally. 5. Paneel volgens een der voorgaande conclusies, waarbij het uitstekende deel en/of het ontvangende deel ten minste taps lopen tussen een eerste vlak (16) van het paneel en een tweede vlak (17) van het paneelPanel according to any one of the preceding claims, wherein the protruding part and / or the receiving part are at least tapered between a first surface (16) of the panel and a second surface (17) of the panel 6. Paneel volgens een der voorgaande conclusies, waarbij elk zijdeel ten minste twee verbindingselementen omvat.6. Panel as claimed in any of the foregoing claims, wherein each side part comprises at least two connecting elements. 7. Paneel volgens een der voorgaande conclusies, omvattende een polymeer materiaal.7. Panel as claimed in any of the foregoing claims, comprising a polymeric material. 8. Paneel volgens een der voorgaande conclusies, waarbij het ten minste ene verbindingselement zelf-vergrendelend is wanneer vastgemaakt aan een ander verbindingselement.8. Panel according to any one of the preceding claims, wherein the at least one connecting element is self-locking when attached to another connecting element. 9. Meerdere panelen (10) volgens een der voorgaande conclusies, waarbij de panelen vastgemaakt zijn aan elkaar door middel van aangrijping van verbindingselementen (20), waarbij een tweede paneel (10) met een identiek verbindingselement (20) is vastgemaakt aan een eerste paneel (10) door verbinding door aangrijping van de respectieve verbindingselementen, zodat het uitstekende deel (24) van het verbindingselement (20) van het eerste paneel (10) in het ontvangende deel (22) van het verbindingselement (20) van het tweede paneel (10) is aangebrach, en het uitstekende deel (24) van het verbindingselement (20) van het tweede paneel (10) is ontvangen in het ontvangende deel (22) van het verbindingselement (20) van het eerste paneel (10).A plurality of panels (10) as claimed in any one of the preceding claims, wherein the panels are attached to each other by engaging connecting elements (20), a second panel (10) having an identical connecting element (20) being attached to a first panel (10) by connection by engagement of the respective connecting elements, so that the projecting part (24) of the connecting element (20) of the first panel (10) into the receiving part (22) of the connecting element (20) of the second panel (20) 10) is provided, and the protruding part (24) of the connecting element (20) of the second panel (10) is received in the receiving part (22) of the connecting element (20) of the first panel (10). 10. De meerdere panelen volgens conclusie 9, waarbij aangrenzende panelen aan elkaar zijn vastgemaakt aan hun respectieve zijdelen (14) door ten minste twee identieke verbindingselementen aan elk paneel die elkaar aangrijpen om de aangrenzende panelen aan elkaar te verbinden en te zekeren.The plurality of panels according to claim 9, wherein adjacent panels are attached to each other at their respective side portions (14) by at least two identical connecting elements on each panel that engage each other to connect and secure the adjacent panels to each other. 11. Drainageconstructie met een bovenzijde, een onderzijde en zijwanden die zich uitstrekken tussen de bovenzijde en de onderzijde, waarbij de bovenzijde, de onderzijde en/of de zijwanden meerdere panelen (10) volgens een der voorgaande conclusies omvatten, waarbij aangrenzende panelen in hetzelfde vlak zijn vastgemaakt aan elkaar door middel van hun respectieve verbindingselementen (20).A drainage structure with a top side, a bottom side and side walls extending between the top side and the bottom side, the top side, the bottom side and / or the side walls comprising a plurality of panels (10) according to any one of the preceding claims, wherein adjacent panels in the same plane are attached to each other by their respective connecting elements (20). 12. Werkwijze voor het vervaardigen van een paneel (10) voor een drainagebox, waarbij de werkwijze omvat: - het vormen van een centraal deel (12) met een of meerdere openingen (13) voor de passage van vloeistof daardoorheen; en - het vormen van zijdelen (14) voorzien van ten minste een verbindingselement (20), waarbij het verbindingselement een ontvangend deel (22) en een uitstekend deel (24) omvat, waarbij het ontvangende deel complementair gevormd is aan het uitstekende deel, zodat het verbindingselement kan worden vastgemaakt aan een ander identiek verbindingselement.A method for manufacturing a panel (10) for a drainage box, the method comprising: - forming a central part (12) with one or more openings (13) for the passage of liquid therethrough; and - forming side parts (14) provided with at least one connecting element (20), wherein the connecting element comprises a receiving part (22) and a protruding part (24), the receiving part being complementary to the protruding part, so that the connecting element can be attached to another identical connecting element. 13. Werkwijze volgens conclusie 12, waarbij de stappen van het vormen van het centrale deel en het vormen van de zijdelen met ten minste een verbindingselement tegelijkertijd plaatsvindt.A method according to claim 12, wherein the steps of forming the central part and forming the side parts with at least one connecting element take place simultaneously. 14. Werkwijze volgens een der conclusies 12-13, waarbij het paneel is gevormd met spuitgieten.The method of any one of claims 12-13, wherein the panel is injection molded.
NL2016992A 2016-06-17 2016-06-17 Interlocking Panels for Drainage Structures NL2016992B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NL2016992A NL2016992B1 (en) 2016-06-17 2016-06-17 Interlocking Panels for Drainage Structures
PCT/NL2017/050394 WO2017217846A1 (en) 2016-06-17 2017-06-15 Interlocking panels for drainage structures
EP17732604.8A EP3472397B1 (en) 2016-06-17 2017-06-15 Interlocking panels for drainage structures
PL17732604T PL3472397T3 (en) 2016-06-17 2017-06-15 Interlocking panels for drainage structures

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL2016992A NL2016992B1 (en) 2016-06-17 2016-06-17 Interlocking Panels for Drainage Structures

Publications (2)

Publication Number Publication Date
NL2016992A true NL2016992A (en) 2017-12-21
NL2016992B1 NL2016992B1 (en) 2018-01-16

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NL2016992A NL2016992B1 (en) 2016-06-17 2016-06-17 Interlocking Panels for Drainage Structures

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EP (1) EP3472397B1 (en)
NL (1) NL2016992B1 (en)
PL (1) PL3472397T3 (en)
WO (1) WO2017217846A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3080867B1 (en) * 2018-05-03 2020-10-23 Rehau Tube Sarl THREE-DIMENSIONAL STRUCTURE TO BE MOUNTED TO FILL AN UNDERGROUND RAINWATER RETENTION BASIN
NL2031592B1 (en) * 2022-04-14 2023-11-06 Pipelife Nederland Bv Side connectors for rainwater box

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10055327C1 (en) * 2000-11-08 2002-01-24 Sendenhorst Kunststoffroehren Grid plate for construction of 3-dimensional structure has struts within peripheral frame provided within variable spacing or cross-sectional geometry for increasing loading capacity at center of grid plate
US20070274776A1 (en) * 2006-05-29 2007-11-29 Astral Property Pty Ltd Connector
WO2016042140A1 (en) * 2014-09-19 2016-03-24 Wavin B.V. A plastic infiltration unit, a system comprising a plurality of plastic infiltration units

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10055327C1 (en) * 2000-11-08 2002-01-24 Sendenhorst Kunststoffroehren Grid plate for construction of 3-dimensional structure has struts within peripheral frame provided within variable spacing or cross-sectional geometry for increasing loading capacity at center of grid plate
US20070274776A1 (en) * 2006-05-29 2007-11-29 Astral Property Pty Ltd Connector
WO2016042140A1 (en) * 2014-09-19 2016-03-24 Wavin B.V. A plastic infiltration unit, a system comprising a plurality of plastic infiltration units

Also Published As

Publication number Publication date
WO2017217846A1 (en) 2017-12-21
EP3472397B1 (en) 2020-05-27
EP3472397A1 (en) 2019-04-24
NL2016992B1 (en) 2018-01-16
PL3472397T3 (en) 2021-01-25

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