Patent ID: 7607935
Filing Date: 2009-10-27
Classification: F21S,F21V,F24F

Abstract:
1. Insert suitable for being placed in a wall, ceiling or other element, wherein said insert comprises ventilation means and an aperture in which, inside the insert, means for snap-fitting of electrical installation means, are provided, and that furthermore resilient means are provided for fastening of the insert in said wall, ceiling or other element, wherein the insert is an expansion unit comprising two coaxially arranged cylindrical elements which include at least three zones in axial direction: a first zone that in the assembled condition will be furthest from the surface on which the item is mounted and at the inner side of which is provided engagement means; a deformation zone in which there is provided pre-shaped deformation means, whereby the item, when subjected to axial deformation, will expand the cylindrical cross-section compared with the cross-section of the cylinder before the deformation; and a first spacer zone; further wherein the inner cylindrical element includes at least two zones: a first zone in which at the outer side of the cylinder there is provided engagement means corresponding to and intended for engagement against the engagement means of the outer cylinder; and a second spacer zone.