Patent ID: 6036752
Filing Date: 2000-03-14
Classification: B01D,Y10S

Abstract:
A filter assembly comprising:a substantially rigid frame defining an opening, the frame having an upstream side and a downstream side;filter media extending across the opening, the filter media having an upstream side and a downstream side; anda plurality of pleats formed in the filter media, each pleat including a leading edge defined by a common fold line on the upstream side of the filter media and an upper panel and a lower panel, the upper and lower panels being separated by the common fold line;wherein first and second pleats in each group of four successive adjacent pleats are connected at a plurality of first connection points at spaced intervals along the first and second pleats,and further wherein the second and third pleats in the group of four successive pleats are connected to each other at second connection points at spaced intervals along the second and third pleats, the second connection points being offset along the pleats from the first connection points.