EXHAUST FAN AND METHOD OF OPERATING THE SAME
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United States of America Patent
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Issued Date -
May 21, 2009
app pub date -
Nov 21, 2008
filing date -
Nov 21, 2007
priority date (Note) -
Abandoned
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Abstract
The present invention provides an exhaust fan including a ventilation grille having a plurality of louvers extending across an exterior face of the grille. Two of the louvers can define an opening and can be oriented such that the interior of the fan is obscured from view of a person through the opening, when the person is positioned in the room such that the person's eyes are outside an area of the room defined by a first reference plane oriented at an angle of less than 25 degrees with respect to a second reference plane and intersecting the second reference plane along a horizontal reference line and a third reference plane oriented at an angle of less than 25 degrees with respect to the second reference plane and intersecting the second reference plane along the horizontal line.
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