Patent ID: 9744484
Date: 2017-08-29
CPC Classifications: B01D

Claim:
1. A filter for filtering particulates from fluid and gas streams comprising: a cylindrical filter element for filtering material in response to fluid flow through the filter element, wherein the filter element has a longitudinal axis, and a top and bottom end; an end cap forming a fluid tight seal secured to an end of the filter element; and a porous wrap helically wrapped around the filter element to form a plurality of adjacent turns under tension to hold the filter element in a cylindrical configuration, wherein the wrap comprises an outer strip made from a first material and for attaching to the end cap and an inner strip made from a second material and for resisting radially outward forces generated by a pressure drop across the filter element, the first material being different from the second material, and wherein the inner strip has parallel edges defining an inner strip width laterally therebetween, and the outer strip has parallel edges defining an outer strip width laterally therebetween, the inner strip width being narrower than the outer strip width, the inner strip being disposed laterally within the outer strip, and wherein the wrap has two ends disposed so that the outer and inner strips may attach to the end cap.