| 摘要 |
<p>A connector for a cross beam that hooks into a slot in a main beam in the grid of a suspended ceiling. The connector has a plastic encasement that forms abutments about a metallic core. The abutments position the connector within the slot, and prevent further entry of the connector into the slot, under normal conditions. The plastic abutments melt away during a fire, so that the beam can expand longitudinally to relieve stresses in the beam, without the beam buckling. Ridges on the bottom of the metallic core prevent pullback of the connector from the slot, during a fire, to prevent the ceiling from sagging or drooping.</p> |
