Patent ID: 9440178
Filing Date: 2016-09-13
CPC Classification: B01D

Claim Text:
1. A filter element, comprising: a center tube having a first end and a second end; a blank of a filter media folded into a plurality of triangles, wherein each triangle is disposed adjacent to another of the plurality of triangles to form a series of triangular pleats to form a pleated filter media, the pleated filter media being disposed about the center tube, wherein a cross sectional area of the pleated filter media proximal to each of the first end and the second end is greater than a cross sectional area of the pleated filter media at a point between the first end and the second end; and the blank of filter media further comprises at least one of a first pleated extended portion to extend the pleated filter media along a first truncated cone shaped surface defined by the pleated filter media from a relatively minimum cross sectional area to the cross sectional area at the first end; and a second pleated extended portion to extend the pleated filter media along a second truncated cone shaped surface defined by the pleated filter media from the relatively minimum cross sectional area to the cross sectional area at the second end.