Patent ID: 6743282
Filing Date: 2004-06-01
Classification: B01D

Abstract:
A furnace filter system for installation on a furnace duct, the furnace duct having spaced apart top and bottom walls and spaced apart first and second side walls therebetween providing the duct with an internal passageway and an exterior, said furnace filter system including a supply assembly at least partially positioned exterior of said internal passageway and that holds a supply of non-spent filter media, a take-up assembly at least partially positioned exterior of said internal passageway and on a substantially opposite side of said duct from said supply assembly whereby said take-up assembly receives and stores a spent portion of said filter media, said filter media extending from said supply assembly across at least a portion of said internal passageway of said duct to said take-up assembly, a frame assembly positioned within said internal passageway of said duct to at least partially support said filter media in said internal passageway of said duct, and a control system to advance said filter media from said supply assembly to said take-up assembly, said control system including a motor to advance said filter media from said supply assembly to said take-up assembly, said supply assembly including a tension arrangement to tension said filter media during transfer from said supply assembly to said take-up assembly, said supply assembly includes an upper roll support and a lower roll support, and a first roll removably mounted therebetween, said tension arrangement at least partially positioned in said upper roll support and including an adjustable tension adjuster to at least partially tension said filter media between said supply assembly and said take-up assembly.