Patent ID: 6491743
Filing Date: 2002-12-10
Classification: B03C

Abstract:
An air filter cartridge for removing dust from an airflow comprising:(a) polarizable, non-conductive, air-permeable, folded trapping medium with two sides that is folded along edges in an accordion shaped form to provide panel surfaces delimited by said fold edges; (b) a plurality of air permeable polarizing electrodes formed between said folded edges of said medium, on non-contiguous panel surfaces; and (c) electrical contact means associated with said electrodes for connecting the polarizing electrodes to a source of electrical charge to provide an alternate polarizing charge potential to respective alternate polarizing electrodes and thereby provide a polarizing potential therebetween whereby, upon connection to a source of electrical potential, said polarizing electrodes will cause said trapping medium to become polarized transversely across said panels to trap dust particles from air flow passing transversely therethrough.