Integral transverse flanges for a duct connecting system
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United States of America Patent
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-
Jun 26, 2007
Grant Date -
Aug 3, 2006
app pub date -
Jan 31, 2005
filing date -
Jan 31, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An integral transverse flange for a duct includes a first upturned portion extending substantially perpendicularly from a duct wall of the duct. The flange further includes a second portion bent rearwardly from the first upturned portion, and a third return portion turned toward the duct wall and rounded back toward the first upturned portion from the second portion. A fourth L-shaped portion extends from the third return portion, the L-shaped portion having a first arm arranged adjacent to and in close relation with the second portion and a second arm arranged adjacent to and in close relation with the first upturned portion. A bead is formed in the first upturned portion.
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