Indexed support bar
AssigneeUSG Interiors, Inc.
InventorsJames J. Lehane, Abraham M. Underkofler, Peder J. Gulbrandsen
Life of this patent
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Abstract
A support bar, and method of its manufacture, for suspending grid members of a suspended ceiling, the bar being formed of a length of a sheet metal strip, a lower portion of the bar having regularly spaced holes for receiving and supporting bulbs of grid runners, an upper portion of the bars having longitudinally extending formed ribs, the ribs extending laterally from both sides of a central plane in which the lower portion lies.
Claims9
A support bar for suspending grid members of a suspended ceiling, the bar being formed of a length of a sheet metal strip, a lower portion of the bar having regularly spaced holes for receiving and supporting bulbs of grid runners, an upper portion of the bar having longitudinally extending formed ribs, the ribs extending laterally from both sides of a central plane in which the lower portion lies, a plurality of fastener holes positioned to register with a plurality of fastener holes of a second support bar identical to said first mentioned support bar when said second support bar is lapped over an end of said first-mentioned support bar, at least some of said fastener holes being situated at a peak of one of said ribs.
Dependencies are inferred from the claim text.