Patent EP0260769A1 successfully refreshed from Google Patents.
EP0260769A1
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EP
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Method of providing a substructure construction for an artificial grassfield and an artificial grassfield having such a substructure construction
Assignee: Wegenbouwmaatschappij J Heijmans BV
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Filing: 1987-09-14
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Granted: —
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Expires: 2007-09-14
Abstract
Abstract A method of providing a substructure construction for an artificial grassfield by providing a foundation on a layer of sand which is present or has been provided, said foundation for the larger part consisting of natural round sand or river sand to which a material of organic orgin is added in an amount of more than 1 weight %, calculated on the quantity of sand, whereby 60-70 weight % of river sand is distributed evenly among a quantity of 40-30 weight % of rubber particles.
Inventors
- 👤 Josephus Cornelis Heerkens
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 13:50
CPC Classifications
E; E01; E01C; E01C13/00; E01C13/08
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
87 words
A method of providing a substructure construction for an artificial grassfield by providing a foundation on a layer of sand which is present or has been provided, said foundation for the larger part consisting of natural round sand or river sand to which a material of organic orgin is added in an amount of more than 1 weight %, calculated on the quantity of sand, characterized in that 60-70 weight % of river sand is distrubuted evenly amoung a quantity of 40-30 weight % of rubber particles.
Claim 2
Independent Claim
87 words
A method of providing a substructure construction for an artificial grassfield by providing a foundation on a layer of sand which is present or has been provided, said foundation for the larger part consisting of natural round sand or river sand to which a material of organic orgin is added in an amount of more than 1 weight %, calculated on the quantity of sand, characterized in that 60-70 weight % of river sand is distrubuted evenly amoung a quantity of 40-30 weight % of rubber particles.
Claim 3
Dependent Claim
57 words
The method according to claim 1, characterized in that the rubber particles orginate from mechanically ground car tyres, the larger part of the particles having a screen size of 6-11 mm and being free of textile and of steel, the main part of the particles has a thickness being more than half the lenght of the particles.
Claim 4
Independent Claim
37 words
The method according to claims 1-2, characterized in that the filling of the rubber matrix by sand particles is stimulated by adding up to 10 weight % of water during the mixing of sand and rubber particles.
Claim 5
Independent Claim
26 words
The method according to claims 1-3, characterized in that the mixture of rubber and sand is provided on the foundation to a height of 4-20 cm.
Claim 6
Independent Claim
20 words
The method according to claims 1-4, characterized in that the rubber particles and sand grains have substantially the same weight.
Claim 7
Dependent Claim
30 words
A field of artificial grass consisting of a substructure construction and an upper layer with synthetic fibres, characterized in that the substructure construction is applied as described in claims 1-5.
References Cited (Backward Citations)
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