ONE PIECE ROLL-FORMED DAMPER FRAME AND METHOD OF MANUFACTURE
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United States of America Patent
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Oct 28, 2013
filing date -
Oct 28, 2013
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Abstract
A single piece roll-formed frame comprising a first channel having a base section and one or more legs, each leg comprising an upper side extending from the base section at a first angle and a lower side extending from the upper side at a second angle, a second channel having a base section and one or more legs, each leg comprising an upper side extending from the base section at the first angle and a lower side extending from the upper side at the second angle and wherein the base section of the first channel and the base section of the second channel are formed from a single piece and intersect to form a third angle, and the upper side of each leg of the first channel overlaps the upper side of each leg of the second channel.
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