Back to results
US 4,665,674 AGranted
Grid ceiling
AssigneeHunter Douglas International N.V.
InventorJohannes A. Brugman
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeHunter Douglas International N.V.
InventorJohannes A. Brugman
Estimating the term…
A grid ceiling comprising a set of first parallel channel section elongate members and a set of second parallel channel section elongate members, the first members being so arranged transverse to the second members as to form a grid with polygonal spaces therein. Each channel shaped member includes a lower portion and two spaced side flanges extending upwardly therefrom. At least one integral hook is formed at each of the ends of the second members and co-operating first openings are formed in at least one side flange of the first members at first position situated at regular, spaced intervals therealong, so that the hooks of the second members can be engaged in said first openings to form said grid ceiling. A series of one or more second openings are formed in at least one side flange of the second member at second position situated at regular, spaced intervals therealong. The second openings are so shaped that, when the second members are cut at the relevant second positions transverse to the length of the second members, at least one of said integral hooks is formed.
A grid ceiling comprising a set of first parallel channel section elongate members and a set of second parallel channel section elongate members, the first members being arranged transverse to the second members, to form a grid with polygonal spaces therein, each channel shaped member including a lower portion and two spaced side flanges extending upwardly therefrom, at least one integral hook being formed at each of the ends of said second members and co-operating first openings being formed in at least one side flange of said first members at first positions situated at regular, spaced intervals therealong, so that the hooks of said second members can be engaged in said first openings to form said grid ceiling, a series of one or more second openings being formed in at least one side flange of said second member at second positions situated at regular, spaced intervals therealong, the second openings being so shaped that, when said second members are cut at the relevant second positions transverse to the length of the second member, at least one of said integral hooks is formed.
A grid ceiling according to any preceding claim, wherein the second opening which can form the hooks are so shaped that, after cutting, at least one hook is produced on each of the two free ends caused by the cuts at the relevant second positions.
Dependencies are inferred from the claim text.