Assembly of wall elements

Claim 1

In a wall assembly formed of a plurality of wall elements each having opposite side faces and edge faces interconnecting said side faces; first connecting elements formed along peripheral zones of at least some of the wall elements; second connecting elements formed along peripheral zones of at least some of the wall elements; adjoining wall elements being joined together by a groove-and-tongue connection each formed of one of the first connecting elements and one of the second connecting elements; one of the first and second connecting elements forming each groove-and-tongue connection comprising a tongue formed on one wall element and the other of the first and second connecting elements forming each groove-and-tongue connection comprising a grooved part formed on another, adjoining wall element; the tongue and the grooved part of each groove-and-tongue connection being in an interfitting relationship with one another; the improvement wherein (a) a first one of said wall elements carries one of said first connecting elements extending on a side face thereof and one of said second connecting elements extending on an edge face thereof; said first connecting element of said first wall element being at an angle other than zero with respect to and merging into said second connecting element of said first wall element in a corner zone of said first wall element; further wherein the tongue constituting one of said connecting elements of said first wall element has a slanted end portion of 45°; said end portion forming a transition into the grooved part constituting the other of said connecting elements of said first wall element; (b) a second one of said wall elements carries two of said first connecting elements on one side face thereof; said two first connecting elements of said second wall element meeting in a corner zone of said second wall element; (c) a third one of said wall elements carries two of said second connecting elements on two adjoining edge faces thereof; (d) said first, second and third wall elements are in an adjoining relationship with one another; (e) said first connecting element of said first wall element and one of said two second connecting elements of said third wall element together form a first one of said groove-and-tongue connections; (f) said second connecting element of said first wall element and one of said two first connecting elements of said second wall element together form a second one of said groove-and-tongue connections; and (g) the other of said two first connecting elements of said second wall element and the other of said two second connecting elements of said third wall element together form a third one of said groove-and-tongue connections.