System for stabilizing the top lamella against wind load by using a linear chain
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United States of America Patent
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Mar 24, 2015
Grant Date -
Mar 31, 2011
app pub date -
Sep 25, 2009
filing date -
Sep 25, 2009
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Abstract
A mechanical link is provided to lessen or eliminate air infiltration between a topmost lamella of a rollup door and the lintel of the doorway. The link is deployed in an unfolded configuration to support the topmost lamella against deflection caused by application of a force perpendicular to the plane of the door. The link components are folded into a storage position upon rolling up of the door upon a series of take-up discs.
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