Patent ID: 8114201
Filing Date: 2012-02-14
Classification: B01D

Abstract:
1. A filter apparatus for use in a reverse air filtration system, said apparatus comprising: a particulate filter bag, said particulate filter bag having an inlet end for operative interconnection to a pollutant-laden fluid stream, said particulate filter bag defining an internal volume between said inlet end and an oppositely disposed cap end, said particulate filter bag having an upstream surface facing said internal volume and a downstream surface facing away from said internal volume; at least one support disposed along a longitudinal axis of said particulate filter bag for support to maintain said internal volume; the support comprising a plurality of rigid rings oriented perpendicular to said longitudinal axis, wherein said plurality of rigid rings are each interconnected to said particulate filter bag; and a sleeve removably disposed about said particulate filter bag and said at least one support, said sleeve disposed on said downstream surface side of said particulate filter bag.