E - Fixed Constructions – 04 – B
Patent
E - Fixed Constructions
04
B
20/18.9
E04B 9/12 (2006.01)
Patent
CA 1137729
ABSTRACT OF THE DISCLOSURE A suspended ceiling system including a main beam formed with a vertically extending rectangular window and a pair of cross beams intended to abut the main beam in alignment with one another at the window. The cross beams, which are identical, have at each end a pair of longitudinally extend ing vertically spaced tongues integral with the web thereof, the tongues being spaced and laterally offset in opposite directions from the plane of the associated web to such degree that the diagonally measured distance between the upper edge of the upper tongue and the lower edge of the lower tongue is equal to the diagonal dimension of the window so that, when the tongues of the mated cross beams are inserted into the window from opposite sides to seated positions, the tongues of the cross beams mutually overlap one another for snug occupation of all four corners of the window opening. To lock the parts in place the lower tongues are each formed with a downwardly extending hook projection which is in interfering engagement with the lower edge, or ledge, of the window, making the cross beams captive against longitudinal withdrawal from their seated positions. The tongues are of substantially the same length, but the upper tongues are relieved along the tip portions of their upper edges to provide initial clearance with respect to the upper edge of the window, thereby to permit the hook projection on the cross beam to be hooked over the ledge of the window as a preliminary to the movement of the parts into seated condition.
370599
Rosenbaum Per
Macrae & Co.
Roper Corporation
LandOfFree
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