| 摘要 |
The invention relates to a foam blade (1) that is connectable to a blade of the same type by a tongue and groove system in which the blade includes two major opposite surfaces and four edges connecting said surfaces, a first and a second opposite parallel edge each having a section forming a tongue type profile and a groove type profile, each one of said first and second edges having a recess over the entire length of the tongue type profile thereof, the opening of the recess being oriented toward the median plane between the tongue and the respective groove, the shape of the second edge being complementary to the shape of the second edge except at the recesses, and the position of each one of the recesses being such that said recesses are suitable for forming together a cavity during the connections of two blades of the same type. Preferably, a locking element (10) is introduced into said cavity. The invention also relates to the use of such a blade, to a manufacturing method, and to an assembly method and a kit for assembling several blades of the indicated type. |
