Filter assembly for a vacuum cleaner

Details Filter assembly for a vacuum cleaner Filter assembly for a vacuum cleaner

2005-02-10

2010-02-02

Smith, Duane (Department: 1797)

Gas separation

Two or more separators

C055S486000, C055S521000, C055S498000, C055SDIG030

Reexamination Certificate

active

07655062

ABSTRACT:
A filter assembly for a vacuum cleaner including a filter cartridge a first substantially rigid pleated filter element having a plurality of pleats with pleated edge and a flexible pre-filter element positioned over the pleated edge of the filter cartridge. The pleats may be radial, longitudinal or conical with the pre-filter a disc, cylinder or frusto-conical in shape. In each case the pre-filter is positioned on the pleats so that dirt laden air is drawn through the pre-filter element and then through the pleated filter element before being drawn into a vacuum motor

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