US 4,917,532 AGranted

Grid plate

AssigneeDr. Spiess Kunstoff-Recycling GmbH Co.

InventorsKarl Haberhauer, Wolfgang Schibalski, Walter Burcky, Theo Rydman

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Abstract

A grid plate includes a top side having a non-slip surface having openings to permit the growth of grass. At two sides which are arranged at an angle with respect to one another, the grid plate is provided with step-shaped lateral side walls. An abutment is molded into the vertical stepped wall, this abutment being formed by wall apertures placed into the step-shaped lateral side wall. A horizontal stepped side is used for supporting the side edges which project beyond the ribbing of the bottom side. At the lateral edge, plug-in connections are molded on, which, in the manner of hinges, lock into the wall apertures of an adjacent grid plate. The lateral edge has hooks which point downward and which, during the hinge movement, when the grid plates are emplaced, engage behind the wall of the wall apertures.

Claims15

Dependent claims

A grid plate of plastic material having a rough slippage-preventing top side and a rib-reinforced bottom side, the grid plate being adapted to be emplaced as a securing element for at least parking places, road embankments, and ramps comprising:

a three-dimensional grid plate having a substantially square shape and including an upper face, a lower section opposite the upper face, at least four sides around the perimeter extending from the upper face to lower section, the lower section of the grid plate having ring-shaped reinforcement members which extend from the upper face and are connected with one another by reinforcing webs and to the sides of the grid plate;
plug-in connecting means adapted to be locked together and again disconnectable for connecting together emplaced grid plates including at least one insertable first connecting web means projecting out of a first side wall of the grid plate at given positions and extending substantially parallel to the upper face, said first connecting web means each having a free-end angularly bent hook-shaped into a half-hinge such that the free ends of the first connecting web means points in the direction towards the upper face of the grid plate, at least one insertable, second connecting web means projecting out of a side wall which abuts the first side wall of the grid plate at given positions and extending substantially parallel to the upper face, said second connecting web means each having a free-end angularly bent hook-shaped into a half-hinge such that the free ends of the second connecting web points in the direction towards the lower section of the grid plate and at least one horizontal wall aperture means being provided in each of the at least two side walls which do not include first and second web connecting means in positions on each of the side walls for engaging first and second connecting web means of adjacently arranged grid plates, each side wall having horizontal wall aperture means also having an offset step-shaped portion in downward direction starting from the upper face of the grid plate and an additional offset, step-shaped portion in upward direction starting from the lower section.

A grid plate of plastic material adapted as a securing element for at least parking places, road embankments, and ramps, having a rough slippage preventing top side, a rib reinforced bottom side, side walls between the top and bottom sides, and a plug-in connecting means for detachable connecting, in the manner of a hinge, emplaced grid plates, the plug-in connecting means including at least one connecting web projecting out of a side wall of the grid plate and at least one wall aperture at a side wall of an adjacent grid plate for a hooking-in of a connecting web, wherein:

a first side wall of the grid plate, in an area of at least one wall aperture, starting from the top side, has an offset step-shaped portion in the downward direction including an upper vertical offset wall which forms an abutment and a downwardly offset wall portion which is disposed in parallel to the top side.
a second side wall of the grid plate has at least one connecting web which projects out of the grid plate in parallel to the top side, a free end of the at least one connecting web being bent in a hook shape, the at least one connecting web being molded onto a covering strip which extends along a length of the second side wall grid plate;
the at least one wall aperture and connecting web respectively forming half-hinges;
and
the at least wall aperture is arranged substantially horizontally in the first side wall at a position in lateral registration with the at least one connecting web and is located in the downwardly offset wall which is disposed in parallel to the top side, the at least one wall aperture being used for the lateral guiding and support of a connecting web of an adjacent grid plate.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 07/271,576Filed 15 Nov 1988 · continuation in part
Priority: AT 3021/8716 Nov 1987
Granted: 17 Apr 1990
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

E02D 17/205
Securing of slopes or inclines: with modular blocks, e.g. pre-fabricated
E01C 5/20
Pavings made of prefabricated single units: made of units of plastics, e.g. concrete with plastics, linoleum
E01C 9/004
Special pavings ; Pavings for special parts of roads or airfields: pavings specially adapted for allowing vegetation
E01C 2201/12
Paving elements: vertically interlocking