(19) |
|
|
(11) |
EP 2 702 207 B1 |
(12) |
EUROPEAN PATENT SPECIFICATION |
(45) |
Mention of the grant of the patent: |
|
13.04.2016 Bulletin 2016/15 |
(22) |
Date of filing: 26.04.2011 |
|
(51) |
International Patent Classification (IPC):
|
(86) |
International application number: |
|
PCT/EP2011/056570 |
(87) |
International publication number: |
|
WO 2012/146271 (01.11.2012 Gazette 2012/44) |
|
(54) |
LIGHTWEIGHT COMBINED KERB DRAINAGE ELEMENT
KOMBINIERTES LEICHTES BORDKANTENDRAINAGEELEMENT
ÉLÉMENT COMBINÉ LÉGER DE DRAINAGE DE BORDURE DE TROTTOIR
|
(84) |
Designated Contracting States: |
|
AL AT BE BG CH CY CZ DE DK EE ES FI FR GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO
PL PT RO RS SE SI SK SM TR |
(43) |
Date of publication of application: |
|
05.03.2014 Bulletin 2014/10 |
(73) |
Proprietor: Econpro Limited |
|
St Helens, Merseyside WA11 8LY (GB) |
|
(72) |
Inventor: |
|
- SUTTON, Philip
Thornton Hough
Merseyside CH63 4JU (GB)
|
(74) |
Representative: Walker, Ross Thomson |
|
Forresters
Skygarden
Erika-Mann-Strasse 11 80636 München 80636 München (DE) |
(56) |
References cited: :
EP-A1- 1 640 500 DE-U1- 7 700 385 US-A- 3 788 756
|
EP-A1- 2 088 241 GB-A- 1 538 064
|
|
|
|
|
|
|
|
|
Note: Within nine months from the publication of the mention of the grant of the European
patent, any person may give notice to the European Patent Office of opposition to
the European patent
granted. Notice of opposition shall be filed in a written reasoned statement. It shall
not be deemed to
have been filed until the opposition fee has been paid. (Art. 99(1) European Patent
Convention).
|
[0001] This invention relates to a lightweight combined kerb drainage element. In particular,
the present invention relates to a lightweight combined kerb drainage element formed
as a twin-walled design which is capable of exceeding all current manual handling
regulations. By reducing wall sections this allows for increases in flow capacity
which enables surface water to drain away more quickly from the road or carriageway.
[0002] The use of combined kerb drainage systems has grown in popularity over the past decade,
as further legislation pertaining to SuDS (Sustainable Urban Drainage) and numerous
other legislative constrains have come into force, also manual handling legislation
has grown with such documents from the Health and Safety Executive as the CIS 57 publication.
[0003] The weight of both precast concrete and polymer concrete combined kerb drainage systems
prove difficult to install, requiring additional machinery and lifting equipment on
site to meet with current manual handling legislation, this in turn, creates additional
disruption to already overcrowded building sites which requires further health and
safety control measures. The use of a lower weight combined kerb and drainage system
would allow this system to be installed manually as they have been for generations
but in a safer and quicker fashion without the need for additional cumbersome lifting
equipment.
[0004] Conventional material such as precast concrete and polymer concrete designs are also
susceptible to chipping and spalling, requiring on-site remedial works and ongoing
maintenance within the product's service life. Both traditional materials require
heavily upon the earth's dwindling natural resources, but by using recycled polymers
reduces the requirement for such exploitation of natural resources.
[0005] It is therefore an object of the present invention to provide a combined kerb drainage
element which is capable of being manufactured using injection moulding, blow moulding,
vacuum forming, rotational moulding, compression moulding, rim moulding, power impression
moulding carousel moulding, extrusion or pultrusion moulding or any form of plastics
manufacture. The combined kerb drainage element is manufactured from a blend of recycled
polymers from both post-industrial and domestic waste streams. A further object of
the present invention is to provide a combined kerb drainage element that overcomes
the need for a separate gully and pipe drainage system to be installed and, being
formed as a twin-walled structure, provides increases in flow capacity which enables
surface water to drain away more quickly from the road or carriageway. The twin-walled
structure minimises weight and maximises the diameter and capacity of the drainage
channel.
[0006] An example of a combined kerb drainage element is provided in
US 3788756. Also, an example of a method of laying kerbstones is provided in
GB1538064.
Summary of the Invention
[0007] According to the present invention mere is provided a combined kerb drainage element
having a twin wall structure, said element comprising an outer wall structure which
defines upper and lower surfaces, opposing end surfaces, a rear surface and a front
surface adapted to meet a surface to be drained in use, and an inner wall structure
which defines Internal load bearing sections and at least one longitudinal drainage
channel which communicates with one or more apertures situated in the front surface
of the drainage element for allowing water to drain therethrough.
[0008] Preferably, the surface to be drained in use is a road, carriageway or other substantially
flat surface, such as, for example a car park. In use, the combined kerb drainage
element can be manufactured using techniques such as injection moulding, blow moulding,
vacuum forming, rotational moulding, compression moulding, rim moulding, power impression
moulding or any form of plastics manufacture. The combined kerb drainage element may
be manufactured from a blend of recycled polymers from both post-industrial and domestic
waste streams.
[0009] Further preferably, the outer wait structure meets the aesthetic and statutory demands
of the kerb. In use, the inner wall structure could be manufactured from a different
grade or type of polymer, for example, glass filed polypropylene, to create the additional
strength requirements.
[0010] In use, the internal load bearing sections defined on the inner wall structure are
designed so that they locate with corresponding ribs inside the outer wall structure.
Such configuration allows the kerb to be a monolithic load bearing design.
[0011] Preferably, the inner and outer wall structures could be connected by a "snap-fit"
design or heat staked or could be hotplate, sonic or vibration welded. The opposing
end sections define interlocking elements to aid with alignment while being installed
and to ensure a watertight seal. In use, the use of hydrophilic seals to facilitate
sealing might be required.
[0012] Further preferably, in use, the inner and outer wall structures of the combined kerb
drainage element define an internal cavity into which a high density polyurethane
foam or similar material can be introduced. In use, other suitable materials including
steel, aluminium and composite or synthetic materials may be inserted into the internal
cavity, either in addition to the foam or as an alternative thereto, for strengthening
purposes.
[0013] Also according to the present invention there is provided a method of laying a hollow
combined kerb drainage element having a twin wall structure, comprising the steps
of:
- a) placing a plurality of hollow combined kerb drainage elements along the borders
of a surface to be drained;
- b) laying the sub-base and subsequently the top coat of the surface to be drained;
- c) filling the inner section of the hollow combined kerb drainage elements with a
high density polyurethane foam or similar material.
[0014] It is believed that a combined kerb drainage element according to the present invention
at least addresses the problems outlined above. The advantages of the present invention
are that a combined kerb drainage element is provided which is capable of being manufactured
using injection moulding, blow moulding, vacuum forming, rotational moulding, compression
moulding, rim moulding, power impression moulding or any form of plastics manufacture.
Advantageously, although not necessarily, the combined kerb drainage element is manufactured
from a blend of recycled polymers from both post-industrial and domestic waste streams.
Further advantageously, a combined kerb drainage element is provided that obviates
the need for a separate gully and pipe drainage system to be installed and, being
formed as a twin-walled structure, provides increases in flow capacity which enables
surface water to drain away more quickly from the road or carriageway. Further advantageously,
the twin-walled structure minimises weight and maximises the diameter and capacity
of the drainage channel.
[0015] It is will be obvious to those skilled in the art that variations of the present
invention are possible and it is intended that the present invention may be used other
than as specifically described herein.
Brief Description of the Drawings
[0016] A specific non-limiting embodiment of the invention will be described by way of example
and with reference to the accompanying drawings in which:
Fig. 1 shows a side perspective view of a combined kerb drainage element of the present
invention having the dimensions of a standard half battered 305mm depth kerb.
Fig. 2 illustrates an expanded view of the kerb shown in Fig. 1.
Fig. 3 shows a side perspective view of a combined kerb drainage element of the present
invention having the dimensions of a standard half battered 480mm depth kerb.
Fig. 4 illustrates an expanded view of the kerb shown in Fig. 3.
Detailed Description of the Preferred Embodiment
[0017] Referring now to the drawings, one implementation of the present invention is illustrated
in Fig. 1. Fig. 1 shows a combined kerb drainage element according to the present
invention having the dimensions of a standard half battered 305mm depth kerb 10. The
kerb 10 comprises an upper face 12 and a lower face 14, and two opposing end sections
16. The kerb 10 also defines a rear face 18 and a front face 20 which is adapted to
meet with a surface to be drained in use (not shown) which is most usually a road,
carriageway or other substantially flat surface, such as, for example a car park.
[0018] The skilled person will appreciate that, when installed, the top surface of the road
or carriageway will sit approximately along the line A to A' as indicated in Fig.
1. As can also be seen from Fig. 1, the kerb 10 also incudes a high-capacity longitudinal
drainage channel 22. The longitudinal channel 22 meets with at least one aperture
24 defined in the front face 20 of the kerb 10. In use, surface water on the road
or carriageway is drained through the aperture 24 into the drainage channel 22. The
kerb 10 of the present invention therefore serves a number of purposes. It primarily
acts as a kerb for structurally retaining the carriageway and also acting as a demarcation
between road traffic on the carriageway and pedestrians. Crucially, the use of the
present invention overcomes the need for a separate gully and pipe drainage system
to be installed. The present invention is installed exactly as more traditional materials,
with minimal changes to carriageway laying applications.
[0019] Fig. 2 shows how the lightweight combined kerb drainage element shown in Fig. 1 can
be manufactured using techniques such as injection moulding, blow moulding, vacuum
forming, rotational moulding, compression moulding, rim moulding, power impression
moulding or any form of plastics manufacture. The combined kerb drainage element being
manufactured from a blend of recycled polymers from both post-industrial and domestic
waste streams. It is envisaged that virgin materials may also be used without departing
from the scope of the present invention.
[0020] The lightweight combined kerb drainage element of the present invention is formed
as a twin-walled structure which can be manufactured from up to three sections or
components per section, namely first 100, second 200 and third 300 sections of Fig.
2. The first section 100 defines an outer wall structure to meet the aesthetic and
statutory demands of the kerb. An internal structure defined by the second 200 and
third 300 sections meets the structural demands of the kerb and, more particularly,
the D400 loading required of EN/1433. The skilled person will appreciate that the
internal structure defined by the second 200 and third 300 sections could be manufactured
from a different grade or type of polymer, for example, glass filed polypropylene,
to create the additional strength requirements. Ribs 202 defined on the internal structure
have been designed so that they locate with corresponding ribs 102 inside the outer
structure giving a key strength requirement. Such configuration within the internal
haunching structure allows the kerb 10 to be a monolithic load bearing design.
[0021] In use, the combined kerb drainage element of the present invention could have a
"snap-fit" design for the three sections or components, if so required. Alternatively,
the kerb 10 could be heat staked or could be hotplate, sonic or vibration welded as
part of the manufacturing process. Although not shown in the drawings, the kerbs 10
will include an interlocking element on the opposing end sections 16 to aid with alignment
while being installed and to ensure a watertight seal. It is envisaged that the interlocking
elements may located on either the outer wall structure or the inner wall structure
or indeed both without departing from the general teaching of the present invention.
[0022] In addition, the use of hydrophilic seals (not shown) to facilitate sealing might
be required.
[0023] The skilled person will appreciate that certain components or sections could be manufactured
with the use of both injection moulded components and rotational components, or compression
moulded or blow moulded parts if so required. Different variations or densities of
materials could also be provided. The injection moulded design will permit relevant
thin wall structures, and this has been purposely designed to eradicate necessary
thick wall section requirements with conventional designs, therefore allowing much
increased flow dynamics and reduced material use further adding to its environmental
benefits. In this manner, the combined kerb drainage element will be totally compliant
with the current manual handling legislation within the UK, presently, the system
cannot weigh more than 20kg, and furthermore this system will endeavour to comply
with MAC compliance.
[0024] Whilst a strong load bearing structure can be implemented using the present invention
as described so far, it is appreciated that the loading strength characteristics can
be further improved if the internal cavity of the kerb 10, which is formed between
the twin-walls of the kerb that are provided by the first section 100 and the second
section 200, is subsequently pumped with a high density polyurethane foam or similar
material, after being installed. The skilled person will appreciate that the present
invention can be manufactured and brought to the site and installed in a conventional
manner. After installation, the internal cavity of the kerb 10 could then be filled
witch a further strengthening material through an orifice or opening in the kerb 10
(not shown), which will then cure and provide an incredibly strong structure. The
skilled person with appreciate other suitable materials including steel, aluminium,
and composite or synthetic materials could be inserted into the internal cavity for
strengthening purposes.
[0025] Fig. 3 and 4 show a further combined kerb drainage element of the present invention
having the dimensions of a standard half battered 480mm depth kerb 10. For such a
deep kerb 10 elongate external haunching structures 302 and ribs 304 are required
to provide additional strength.
[0026] The combined kerb drainage element of the present invention is intended to comply
with the Highways Agency (HA) issued Interim Advice Note (IAN) 117/08 or any advice
that has preceded this interim advice. This advice note was introduced to help clarify
and offer guidance on the Certification required for products manufactured to EN/1433
(Combined Kerb and Linear Drainage Systems) supplied to HA projects.
[0027] Various alterations and modifications may be made to the present invention without
departing from the scope of the invention as defined by the claims.
1. A combined kerb drainage element (10) having a twin wall structure, said element comprising:
an outer wall structure (100, 300) which defines upper and lower surfaces, opposing
end surfaces, a rear surface and a front surface adapted to meet a surface to be drained
in use; and
an inner wall structure (200) which defines internal load bearing sections (202) and
at least one longitudinal drainage channel (22) which communicates with one or more
apertures (24) situated in the front surface of the drainage element for allowing
water to drain therethrough.
2. The combined kerb drainage element of claim 1 , wherein the surface to be drained
in use is a road, carriageway or other substantially flat surface, such as, for example
a car park.
3. The combined kerb drainage element of claim 1 or 2, wherein such can be manufactured
using techniques such as injection moulding, blow moulding, vacuum forming, rotational
moulding, compression moulding, rim moulding, power impression moulding or any form
of plastics manufacture.
4. The combined kerb drainage element of claim 1, 2 or 3, wherein such is manufactured
from a blend of recycled polymers from both post-industrial and domestic waste streams.
5. The combined kerb drainage element according to any of the preceding claims, wherein
the outer wall structure meets the aesthetic and statutory demands of the kerb.
6. The combined kerb drainage element according to any of the preceding claims, wherein
the inner wall structure could be manufactured from a different grade or type of polymer,
for example, glass filed polypropylene, to create the additional strength requirements.
7. The combined kerb drainage element according to any of the preceding claims, wherein
the internal load bearing sections (202) defined on the inner wail structure (200)
are designed so that they locate with corresponding ribs (102) inside the outer wall
structure (100, 300).
8. The combined kerb drainage element according to any of the preceding claims, wherein
the inner and outer wall structures are connectable by a "snap-fit" design.
9. The combined kerb drainage element according to any of claims 1 to 7, wherein the
means by which the inner and outer wall structures are connected is selected from
a list consisting of: heat staked or hotplate, sonic or vibration welded.
10. The combined kerb drainage element according to any of the preceding claims, wherein
the opposing end sections define interlocking elements to aid with alignment while
being installed and to ensure a watertight seal.
11. The combined kerb drainage element according to claim 10, wherein, in Use, hydrophilic
seals facilitate the watertight seal.
12. The combined kerb drainage element according to any of the preceding claims, wherein,
in use, the inner and outer wall structures define an internal cavity into which a
high density polyurethane foam or similar material can be introduced.
13. The combined kerb drainage element according to claim 12, wherein, in use, other suitable
materials including steel, aluminium and composite or synthetic materials are inserted
into the internal cavity, either in addition to the foam or as an alternative thereto,
for strengthening purposes.
14. A method of laying a hollow combined kerb drainage element having a twin wall structure
comprising the steps of:
a) placing a plurality of the hollow combined kerb drainage elements along the borders
of a surface to be drained;
b) laying the sub-base and subsequently the top coat of the surface to be drained;
c) filling the inner section of the hollow combined kerb drainage elements with a
high density polyurethane foam or similar material.
1. Kombiniertes Bordkantendrainageelement (10) mit einer Doppelwandstruktur, wobei besagtes
Element Folgendes umfasst:
eine Außenwandstruktur (100, 300), die obere und untere Oberflächen, gegenüberliegende
Endoberflächen, eine hintere Oberfläche und eine vordere Oberfläche definiert, die
dafür ausgelegt sind, auf eine im Einsatz zu drainierende Oberfläche zu treffen; und
eine Innenwandstruktur (200), die interne tragende Abschnitte (202) und mindestens
eine längsverlaufende Drainagerinne (22) definiert, die mit einer oder mehreren Öffnungen
(24), die in der vorderen Oberfläche des Drainageelements befindlich sind, damit durch
sie hindurch das Wasser ablaufen kann, in Verbindung steht.
2. Kombiniertes Bordkantendrainageelement nach Anspruch 1, worin die im Einsatz zu drainierende
Oberfläche eine Straße, Fahrbahn oder sonstige im Wesentlichen flache Oberfläche wie
zum Beispiel ein Parkplatz ist.
3. Kombiniertes Bordkantendrainageelement nach Anspruch 1 oder 2, worin ein solches mithilfe
von Verfahren wie Spritzgießen, Blasformen, Vakuumformen, Rotationsformen, Pressformen,
RIM-Formen, PIM-Formen oder einer beliebigen Form der Kunststoffherstellung hergestellt
werden kann.
4. Kombiniertes Bordkantendrainageelement nach Anspruch 1, 2 oder 3, worin ein solches
aus einer Mischung von recycleten Polymeren sowohl aus Industrie- als auch Haushaltsabfällen
hergestellt wird.
5. Kombiniertes Bordkantendrainageelement nach irgendeinem der vorhergehenden Ansprüche,
worin die Außenwandstruktur die ästhetischen und gesetzlichen Anforderungen an die
Bordkante erfüllt.
6. Kombiniertes Bordkantendrainageelement nach irgendeinem der vorhergehenden Ansprüche,
worin die Innenwandstruktur aus einer anderen Güte oder Art von Polymer hergestellt
werden könnte, beispielsweise glasgefülltem Polypropylen, um die zusätzlichen Festigkeitsanforderungen
zu erfüllen.
7. Kombiniertes Bordkantendrainageelement nach irgendeinem der vorhergehenden Ansprüche,
worin die internen tragenden Abschnitte (202), die an der Innenwandstruktur (200)
definiert sind, so ausgelegt sind, dass sie in entsprechende Rippen (102) im Inneren
der Außenwandstruktur (100, 300) eingreifen.
8. Kombiniertes Bordkantendrainageelement nach irgendeinem der vorhergehenden Ansprüche,
worin die Innen- und Außenwandstrukturen nach dem "Rastverfahren" verbindbar sind.
9. Kombiniertes Bordkantendrainageelement nach irgendeinem Anspruch 1 bis 7, worin das
Mittel, durch das die Innen- und Außenwandstrukturen verbunden sind, aus einer Liste
ausgewählt wird, die aus Wärmekontaktnieten oder Heißplatten-, Schall- oder Vibrationsschweißen
besteht.
10. Kombiniertes Bordkantendrainageelement nach irgendeinem der vorhergehenden Ansprüche,
worin die gegenüberliegenden Endabschnitte ineinandergreifende Elemente zur Unterstützung
der Ausrichtung während der Installation und zur Gewährleistung einer wasserdichten
Abdichtung definieren.
11. Kombiniertes Bordkantendrainageelement nach Anspruch 10, worin, im Einsatz, hydrophile
Dichtungen die wasserdichte Abdichtung ermöglichen.
12. Kombiniertes Bordkantendrainageelement nach irgendeinem der vorhergehenden Ansprüche,
worin, im Einsatz, die Innen- und Außenwandstrukturen einen internen Hohlraum definieren,
in den ein hochdichter Polyurethanschaum oder ähnliches Material eingebracht werden
kann.
13. Kombiniertes Bordkantendrainageelement nach Anspruch 12, worin, im Einsatz, andere
geeignete Materialien einschließlich Stahl, Aluminium und Verbund- oder synthetischer
Materialien in den internen Hohlraum, entweder zusätzlich zum Schaum oder als eine
Alternative dazu, zum Zweck der Verstärkung eingebracht werden.
14. Verfahren zum Verlegen eines hohlen kombinierten Bordkantendrainageelements mit einer
Doppelwandstruktur, umfassend die folgenden Schritte:
a) Platzieren einer Mehrzahl der hohlen kombinierten Bordkantendrainageelemente entlang
den Rändern einer zu drainierenden Oberfläche;
b) Verlegen des Unterbaus und anschließend der Deckschicht der zu drainierenden Oberfläche;
c) Füllen des inneren Abschnitts der hohlen kombinierten Bordkantendrainageelemente
mit einem hochdichten Polyurethanschaum oder ähnlichen Material.
1. Un élément combiné de drainage de bordure de trottoir (10) ayant une structure de
paroi double, ledit élément comprenant :
une structure de paroi extérieure (100, 300) qui définit des surfaces supérieure et
inférieure, des surfaces d'extrémité opposées, une surface arrière et une surface
avant adaptées pour rencontrer une surface destinée à être drainée durant l'utilisation
; et
une structure de paroi intérieure (200) qui définit des sections porteuses internes
(202) et au moins un canal de drainage longitudinal (22) qui communique avec une ou
plusieurs ouvertures (24) situées dans la surface avant de l'élément de drainage pour
permettre à l'eau d'être drainée à travers les ouvertures.
2. L'élément combiné de drainage de bordure de trottoir selon la revendication 1, dans
lequel la surface destinée à être drainée durant l'utilisation est une route, une
chaussée ou une autre surface sensiblement plate, comme par exemple un parking.
3. L'élément combiné de drainage de bordure de trottoir selon la revendication 1 ou 2,
dans lequel celui-ci peut être fabriqué en utilisant des techniques comme le moulage
par injection, le moulage par soufflage, le formage sous vide, le moulage rotatif,
le moulage par compression, le moulage de type MIR, le moulage par impression de poudre
PIM ou une forme quelconque de fabrication des matières plastiques.
4. L'élément combiné de drainage de bordure de trottoir selon la revendication 1, 2 ou
3, dans lequel celui-ci est fabriqué à partir d'un mélange de polymères recyclés provenant
des filières des déchets post-industriels et domestiques.
5. L'élément combiné de drainage de bordure de trottoir selon l'une quelconque des revendications
précédentes, dans lequel la structure de paroi extérieure répond aux exigences esthétiques
et légales du trottoir.
6. L'élément combiné de drainage de bordure de trottoir selon l'une quelconque des revendications
précédentes, dans lequel la structure de paroi intérieure pourrait être fabriquée
à partir d'une qualité ou d'un type of polymère différent, par exemple du polypropylène
chargé de verre, pour créer les exigences additionnelles de résistance.
7. L'élément combiné de drainage de bordure de trottoir selon l'une quelconque des revendications
précédentes, dans lequel les parties porteuses internes (202) définies sur la structure
de paroi intérieure (200) sont conçues pour se loger avec des nervures correspondantes
(102) à l'intérieur de la structure de paroi extérieure (100, 300).
8. L'élément combiné de drainage de bordure de trottoir selon l'une quelconque des revendications
précédentes, dans lequel les structures des parois intérieure et extérieure sont raccordables
par encliquetage.
9. L'élément combiné de drainage de bordure de trottoir selon l'une quelconque des revendications
1 à 7 dans lequel le moyen par lequel les structures des parois intérieure et extérieure
sont raccordées est sélectionné dans une liste constituée par : soudage par fixation
thermique ou par lame chauffante, par ultrasons ou par vibration.
10. L'élément combiné de drainage de bordure de trottoir selon l'une quelconque des revendications
précédentes, dans lequel les parties d'extrémité opposées définissent des éléments
d'emboîtement pour aider l'alignement pendant leur installation et pour assurer l'étanchéité
à l'eau.
11. L'élément combiné de drainage de bordure de trottoir selon la revendication 10, dans
lequel, durant l'utilisation, des joints hydrophiles facilitent l'étanchéité à l'eau.
12. L'élément combiné de drainage de bordure de trottoir selon l'une quelconque des revendications
précédentes, dans lequel, durant l'utilisation, les structures des parois intérieure
et extérieure définissent une cavité interne dans laquelle une mousse de polyuréthane
à haute densité ou matériau similaire peut être introduit.
13. L'élément combiné de drainage de bordure de trottoir selon la revendication 12, dans
lequel, durant l'utilisation, d'autres matériaux adaptés incluant l'acier, l'aluminium
et des matériaux composites ou synthétiques sont introduits dans la cavité interne,
soit en plus de la mousse, soit comme alternative à ceux-ci, à des fins de renforcement.
14. Un procédé de pose d'un élément combiné creux de drainage de bordure de trottoir ayant
une structure de paroi double comprenant les étapes consistant à :
a) placer une pluralité des éléments combinés creux de drainage de bordure de trottoir
le long des bords d'une surface destinée à être drainée ;
b) poser le socle et ensuite le revêtement supérieur de la surface destinée à être
drainée ;
c) remplir la partie intérieure des éléments combinés creux de drainage de bordure
de trottoir avec une mousse de polyuréthane à haute densité ou matériau similaire.
REFERENCES CITED IN THE DESCRIPTION
This list of references cited by the applicant is for the reader's convenience only.
It does not form part of the European patent document. Even though great care has
been taken in compiling the references, errors or omissions cannot be excluded and
the EPO disclaims all liability in this regard.
Patent documents cited in the description