Patent ID: 9663948
Date: 2017-05-30
CPC Classifications: E04B

Claim:
1. A suspended ceiling grid comprising a plurality of parallel regularly spaced runners, each one of a pair of opposed oppositely facing channels being disposed adjacent one end of said runners, said channels each having a vertical web and a horizontal flange at top and bottom edges of the web, a bracket at each end of each runner, each bracket being attached to a respective runner with a first self-drilling screw and having a portion disposed between the flanges attached to the web of the adjacent channel with a second self-drilling screw, each runner extending in one piece between said channels, one end of each runner being exclusively supported by the adjacent channel with sufficient support capacity including a stiffening of the respective web by the respective top flange to permit the runners to support a conventional acoustical ceiling while being free of multiple suspension wires or other overlying support elements along a full length of the runners between the channels, each grid runner having an upper reinforcing bulb and a lower flange, the bracket fitting in a space between the reinforcing bulb and flange with contact between the bracket and the reinforcing bulb and contact between the bracket and the flange along an extended length of the bracket with essentially no ability to rotate perceptively relative to the grid runner and otherwise allow the grid runner to droop perceptively below its originally installed position.