Slatted grid

Abstract

A metal slatted grid comprises independent and identical elongate rectangular slats out of each of which is cut a series of tongues that are bent on the same side as one face of the slat. The free ends of the tongues are conformed so that they can be fixed to an adjacent slat. The tongues terminate in lugs for fixing them permanently into corresponding holes in an adjacent slat.

There is claimed:  
     
         1 . A metal slatted grid comprising independent and identical elongate rectangular slats out of each of which is cut a series of tongues that are bent on the same side as one face of said slat, whose free ends are conformed to be fixed to an adjacent slat, and that terminate in lugs adapted to fix them permanently into corresponding holes of an adjacent slat.  
     
     
         2 . The metal slatted grid claimed in    claim 1    wherein said tongues are bent at substantially 65° to said slats.  
     
     
         3 . The metal slatted grid claimed in    claim 1    wherein said lugs adapted to be inserted in holes in an adjacent slat are expanded after they are inserted in said holes.  
     
     
         4 . The metal slatted grid claimed in    claim 3    wherein said lugs adapted to be inserted in holes in an adjacent slat are welded after they are inserted in said holes.  
     
     
         5 . The metal slatted grid claimed in    claim 1    wherein said tongues are bent in two longitudinally to form two mutually perpendicular faces.  
     
     
         6 . The metal slatted grid claimed in    claim 1    wherein said slats have a rim bent at right angles along their top edge.  
     
     
         7 . The metal slatted grid claimed in    claim 1    wherein said slats have fastening members along their bottom edge.  
     
     
         8 . The metal slatted grid claimed in    claim 1    wherein said tongues have a T-shape part in the vicinity of their free end with an upright and a crosspiece, said slats incorporate holes adapted to receive said uprights, and said crosspieces are twisted after inserting said uprights in said holes.