Patent ID: 7238104

Claim:
A vent for an enclosure containing electronic equipment, the vent comprising: a fan, operable to draw a flow of air from within the enclosure and direct it non-perpendicularly relative to a wall of the enclosure out through an outlet vent structure disposed about the wall; said outlet vent structure comprising: an outlet path defined by a first and second side member, attached to the enclosure, and an outlet face, said outlet face oriented at a first angle relative to the wall; a plurality of slats, rotatably coupled to said outlet face; said plurality of slats being in a first position when said fan is not operational; said plurality of slats operable to swing radially to a second position when said fan produces an airflow in said outlet vent, wherein the airflow causes said plurality of slats to swing radially from the first position to the second position; said plurality of slats returning due to gravity to the first position from the second position when the airflow is not present; said plurality of slats in said first position being nearer to parallel to said outlet face than when in said second position.