Filtered air vent

Abstract

A filtered air vent has a housing with an inlet and outlet, at least one set of spaced apart airflow control elements extending across the housing elements, spaces between the elements, and a pleated filter disposed within the housing. The filter has alternating first and second pleats that open up in opposite first and second directions, respectively. In one exemplary embodiment of the invention, at least a portion of the pleats that open in a first one of the directions are disposed across the spaces between the elements. The filter may be made from a washable filter material such as, for example, woven polypropylene. The elements in one embodiment of the invention are rotatable blades of a damper disposed within the housing and each of the blades are disposed within a corresponding one of the pleats that open in the second direction.

Dependencies are inferred from the claim text.