Patent ID: 7780510

Claim:
A passive vent device for allowing air to flow from a vented enclosure comprising: a) a base component having an outer flange surrounding a central opening; b) a vertical wall surrounding said central opening and extending upwardly from said base component; c) grill structure supported by said vertical wall adapted to permit air to flow through said central opening and said grill structure; d) a dome-shaped top cover having a top surface and a radiused peripheral edge defining a continuous downwardly depending wall which terminates in a bottom edge suspended over said vertical wall so that said bottom edge is spaced from said flange and said downwardly depending wall is spaced outwardly from said vertical wall to define an air flow path upwardly through said central opening, outwardly through said grill structure, downwardly between said vertical wall and said downwardly depending wall and outwardly between said flange and said bottom edge; and e) a diverter extending upwardly and outwardly from said vertical wall into the air flow path between said vertical wall and said downwardly depending wall of said top cover and defining an outer edge which extends into the air flow path between said vertical wall and said downwardly depending wall, wherein said diverter is supported on an intermediate structure which surrounds said vertical wall and defines vertical sides positioned substantially parallel with and spaced from said vertical wall.