Open web grid runner
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Mar 19, 2013
Grant Date -
Dec 6, 2012
app pub date -
Jun 3, 2011
filing date -
Jun 3, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A suspended ceiling grid runner comprising separate parallel upper and lower chords, a plurality of identical web plates fixed between the chords and the plates having a height less than the height of the grid runner and a width, the chords being made of roll-formed sheet metal strips and symmetrical about a vertical plane, the chordal strips each having marginal sections folded parallel to one another and on opposite sides of the vertical plane, the web plates including vertical slots for receiving connectors of cross runners, the web plates being spaced at regular centers along the grid runner with a distance that is a small fraction of the nominal length of the grid runner, the gaps between adjacent web plates being longer than the height of the grid runner.
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