Device for mounting obstructing grille on edge of opening comprises damping elements connecting grille to opening edge and absorbing kinetic energy impact of external bodies striking grille

摘要

The mounting device for an obstructing grille (30) on the edge (29) of an opening (1,26-29) made in a surface of construction materials comprises damping elements (41-44) which connect the grille to the opening edge. The dampers gradually absorb the kinetic energy impact of an external body striking the grille, by sliding on a surface of the opening.