Patent ID: 6312508
Filing Date: 2001-11-06
Classification: A47L,B01D,Y10S

Abstract:
A filter assembly for a vacuum cleaner comprising:a main housing having an inlet and an outlet;a motor for moving air from said inlet to said outlet;a first filter interposed between said inlet and said outlet for filtering the air;an inner wall and an outer wall spaced apart from said inner wall forming a cavity between said walls, said cavity interposed between said first filter and said outlet, said inner wall having an inner opening permitting air to flow from said first filter into said cavity and said outer wall having an outer opening;a back cover removably secured to said outer wall over said outer opening to seal said cavity and guide the air from said cavity to said outlet, said back cover having an access opening;an access cover removably secured to said back cover over said access opening to seal said access opening; anda filter cartridge removably disposed within said cavity, said filter cartridge having a first side with a first opening and a second side opposite said first side and adjacent to said access cover with a second opening, said filter cartridge having a second filter disposed therein between said first and said second openings for further filtering the air, and a portion of said first side in sealing engagement with a portion of said inner wall with said first opening being aligned with said inner opening wherein the motor moves the air from the inner opening to the second opening.