发明名称 |
Reinforced bead |
摘要 |
A grid tee or member for suspended ceilings has a reinforced bead, a central web and a pair of flangs formed from a single sheet of metal. The reinforced bead has a continuous outer upper surface and can either be a hollow reinforced bead with a rectangular or triangular configuration or a solid bead having a thickness of at least four layers. The hollow bead structure can have a single layer for the top continuous surface with at least two side portions having at least three layer thicknesses, or can be a single top layer, which has more than three layers.
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申请公布号 |
US4852325(A) |
申请公布日期 |
1989.08.01 |
申请号 |
US19890296853 |
申请日期 |
1989.01.13 |
申请人 |
CHICAGO METALLIC CORPORATION |
发明人 |
DUNN, JAMES J.;JAHN, MARTIN D.;VUKMANIC, RONALD W. |
分类号 |
E04B9/06;E04C3/04;E04C3/07 |
主分类号 |
E04B9/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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