Patent ID: 7406804
Filing Date: 2008-08-05
Classification: E04B

Abstract:
1. System of stackable blocks each of which has two joining sides for joining to blocks situated above and/or below it, which joining sides are provided with bearing surfaces, which form the contact surfaces with blocks situated above and below them, in which at least one of the joining sides is at least partially provided with a dressed area, which dressed area forms the bearing surface of this joining side, and in which this bearing surface is situated exactly at a desired distance from the opposite bearing surface of the same block, characterized in that there is at least one groove in each joining side which is opposite a groove in a joining side of a block situated above or below it, and that the system furthermore comprises joining elements which are situated in the grooves opposite each other, wherein the joining elements are profiled flexible strips having a width (W 1 ) which is greater than the width (W 2 ) of the grooves, and the joining elements in cross section have at least roughly a waveform with at least two crests and a trough in which end segments are formed by the crests and a middle segment by the trough, and in which the middle segment is situated where the joining sides of two blocks stacked one on top of the other meet and is in contact with a side of the grooves opposite each other and the end segments are situated deep in the grooves and are in contact with the other sides of the grooves, and the middle segment itself also has a waveform with at least two additional crests and one additional trough.