Abstract: Element to prevent slipping on surfaces, where the surfaces are provided with a plurality of apertures, characterized in that the element comprises a base plate, and that a plurality of towers extend upwards from said base plate, where the towers have a cross section at least at an upper part, corresponding to the shape of the apertures in the surface, and that the towers are arranged on the base plate in a pattern corresponding to the pattern of the apertures in the surface.

Abstract: The present invention relates to a system for constructing tread surfaces comprising polygonal elements (1) where each element has a top surface and a number of substantially straight side edges arranged perpendicular to the top surface along the periphery of said top surface and that all side edges (2) are provided with a number of receiving openings (3) each opening adapted to receive and maintain a connector member, and that said elements (1), furthermore, along one or more of said side edges (4) are provided with one or more integrated and protruding connector members (5) which each are adapted to fit into said receiving openings (3).

Abstract: Element to prevent slipping on surfaces, where the surfaces are provided with a plurality of apertures, characterised in that the element comprises a base plate, and that a plurality of towers extend upwards from said base plate, where the towers have a cross section at least at an upper part, corresponding to the shape of the apertures in the surface, and that the towers are arranged on the base plate in a pattern corresponding to the pattern of the apertures in the surface.

Abstract: For facilitating the passage of wheelchair users over door thresholds it is known to lay out ramp elements across the threshold, this however being an expensive solution even implying that the door cannot be closed. The invention provides for a ramp set suited to be laid out at both sides of the threshold so as to leave the top side thereof uncovered, whereby the door can still be opened and closed. The ramp construction is modular based on the use of light, joinable plastic tile elements of ordinary shape and wedge shape, respectively, and this makes it possible to build up non-costly, tailored ramp constructions in more general, with an associated possibility of reusing the tile elements.

Abstract: A corner support element for paving slabs has stackable plate elements to facilitate transport and for height adjustment. The guide and support elements for corner parts of paving slabs, namely plate elements, have cruciform upright support and distance providing projections. The projections are shaped as upwardly tapering elements with open cavities downwards for accommodating corresponding underlying projections. The elements are modular and can be separated along radial rows of projections to form semicircular segments for supporting two adjoining slab corners or quarter segments for supporting only a single corner. The elements are stacked in columns without turning each of the modular parts mutually between them.