Patent ID: 6387162
Filing Date: 2002-05-14
Classification: B01D

Abstract:
An air filter assembly comprising:(a) a housing including an air inlet, an air outlet, a spacer wall separating the housing into a filtering chamber and a clean air chamber; (i) the air inlet providing a dirty air volume to the air filter assembly, the dirty air volume having an air flow direction; (ii) the spacer wall including a first air flow aperture therein; (b) a first filter construction positioned in air flow communication with the first air flow aperture in the spacer wall; the first filter construction including an extension of filter media disposed between proximal end cap and distal end cap; the filter media, proximal and distal end caps defining a filter construction inner clean air chamber; (i) the first filter construction being oriented within the filter inner clean air chamber in air flow communication with the spacer wall first air flow aperture; (ii) the first filter construction having a cross-sectional area, when taken parallel to the first air flow aperture, the cross-sectional area having a long axis perpendicular to a short axis; and (iii) the first filter construction having a width along the long axis and a width along the short axis, the long axis being positioned parallel to the air flow direction, and wherein a ratio of the short axis to the long axis is at least about 0.5 and less than 1.0.