Patent ID: 6066195
Filing Date: 2000-05-23
Classification: B01D

Abstract:
A accessory for duct systems for displaying the degree of dustiness in a duct network and for trapping heavy and potentially valuable objects as they arc cleaned from a duct network comprising, in combination:a housing having an exterior wall and an open top the exterior wall having an interior surface defining, an interior of the housing the open top providing an opening into the interior of the housing, the housing being fabricated of a transparent material;the housing having an opposing pair of closely spaced parallel ribs extending from the interior surface of the exterior wall of the housing;a flexible filter sheet slidably received between the parallel ribs of the opposed side walls of the housing, the filter sheet having five apertures therethrough including a pair of upper apertures, a pair of lower apertures and a central aperture, the five apertures being disposed through an upper 3/4's of the filter sheet;a rigid insert sheet slidably received between the parallel ribs of the opposed side walls of the housing adjacent the filter sheet, the insert sheet having five apertures therethrough including a pair of upper apertures, a pair of lower apertures and a central aperture in alignment with the five apertures of the filter sheet, the five apertures being disposed through an upper 3/4's of the insert sheet;wherein the filter sheet divides the interior of the housing into a first chamber and a second chamber, the exterior wall of the housing having an aperture into the first chamber, the exterior wall of the housing having an aperture into the second chamber;the apertures into the chambers of the interior of the housing each having a cylindrical sleeve extending outwardly therefrom; anda cover dimensioned for coupling with the open top of the housing, the cover member having a fixed separation extending downwardly therefrom, the separation being aligned substantially parallel the filter sheet, the separation engaging the filter sheet.