Ventilation assembly for the pressure relief of the interior of an automobile
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United States of America Patent
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-
Dec 11, 2012
Grant Date -
Nov 12, 2009
app pub date -
Nov 16, 2007
filing date -
Dec 1, 2006
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A back-air blocking device to ventilate a motor vehicle's inside space includes a frame or housing made of a first plastic, and a valve flap, made of flexible material, connected in one zone to the frame and in other zones resting against a sealing surface of said frame when the flap is in its rest position. The flap detaches off the sealing surface when subjected to a pressure differential. The valve flap is a thin plate made of a closed-pore, foamed material.
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