Floating flapper valve
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 19, 2013
Grant Date -
May 16, 2013
app pub date -
Nov 16, 2011
filing date -
Nov 16, 2011
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An apparatus for increasing the insulation value of a window system with a weep hole includes a flapper valve with a buoyant flap articulating relative to a non-moving portion. The flap is positioned on the window frame over the weep hole proximate the inside of the structure in which the window system is installed and the non-moving portion is attached to the window frame. The flap may be held against the frame around the weep hole by gravity and/or by the elastic memory of a portion of the flap, such as a plastic hinge. The flapper valve is closed when dry to diminish the flow of ex-filtration through the weep hole, but opens in response to being flooded with water due to the buoyancy of the flap, opening the weep hole and allowing the water to drain.
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