Patent ID: 8187352

Claim:
A pulse jet filter element, comprising: an inner cage; and a filter bag surrounding the inner cage, the filter bag comprising a center portion and a plurality of spaced apart rays that extend radially from the center portion, wherein each of the rays comprises a terminal end that is distal to the center portion of the filter bag, and wherein the terminal end of the rays is enlarged from and wider than a portion of each of the rays that is adjacent to the center portion of the filter bag, and wherein the filter bag forms a propeller shape in a cross-sectional view, and wherein each of the plurality of rays extends from near a top of the filter bag to a bottom end of the filter bag, and wherein the center portion forms a wall between each of the rays that separates each ray from the adjoining rays, and wherein an interior of each of the rays communicates with the interior of the center portion of the filter bag, the bag having an open upper end and a closed lower end.