Patent ID: 7703248
Filing Date: 2010-04-27
Classification: E04B,E04C

Abstract:
1. An extruded hollow longitudinally elongated building element into which concrete is to be poured, said element being extruded so as to be integrally formed and comprising: a pair of longitudinally extending spaced side walls which are generally parallel and coextensive; and a plurality of longitudinally extending spaced transverse webs joining the side walls, the webs including a first, a second, and a third web, with at least one of the webs having at least one aperture and one of the webs being an end web, and wherein the second transverse web is located between the first web and the third web and includes a central flange joined to the side walls by means of pairs of diverging end flanges that diverge from the central flange to the side walls; a pair of longitudinally extending grooves, each of the grooves being formed in one of the side walls; a pair of longitudinally extending end flanges; each of the extending end flanges extending from one of the side walls; and adjacent the end web, a pair of longitudinally extending surfaces that diverge from the end web toward the grooves; wherein the extending end flanges and grooves are positioned and configured to engage a respective groove or extending end flange of a like element, and the extending end flanges are sufficiently resiliently deformable such that, when the extending end flanges are moved in a transverse direction relative to the diverging surfaces of the like element, there is a resilient deformation of the extending end flanges to allow a snap engagement of each extending end flange within its respective groove whereby to enable the elements to be secured together by snap engagement of the extending end flanges and the grooves.