VACUUM CLEANER
First Claim
Patent Images
1. A vacuum cleaner comprising:
- a working air path comprising a dirty air inlet and a clean air outlet;
a motor/fan assembly in fluid communication with the dirty air inlet for generating a working airstream through the working air path; and
a debris removal assembly for removing and collecting debris from the working airstream for later disposal, the debris removal assembly having a central axis and comprising;
a debris removal assembly body having an air inlet in fluid communication with the dirt air inlet and an air outlet fluidly upstream of the clean air outlet;
a multi-layer filtration stage provided within the debris removal assembly body, and comprising;
a louvered exhaust grill comprising a generally cylindrical body having a plurality of louvers extending longitudinally relative to the central axis between upper and lower ends of the generally cylindrical body and forming air flow openings therebetween;
a mesh screen disposed radially outwardly from the louvers relative to the central axis; and
a multi-layer filter mounted within the louvered exhaust grill, fluidly downstream of the air flow openings, and comprising multiple layers of filtration material.
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Accused Products
Abstract
A vacuum cleaner includes an air treatment or debris removable assembly with a multi-layer filtration stage. The multi-layer filtration stage can include an outer mesh screen, a louvered exhaust grill, and a multi-layer filter. Optionally, an inner perforated exhaust grill is also provided. The debris removable assembly can further include a cyclonic filtration stage.
27 Citations
20 Claims
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1. A vacuum cleaner comprising:
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a working air path comprising a dirty air inlet and a clean air outlet; a motor/fan assembly in fluid communication with the dirty air inlet for generating a working airstream through the working air path; and a debris removal assembly for removing and collecting debris from the working airstream for later disposal, the debris removal assembly having a central axis and comprising; a debris removal assembly body having an air inlet in fluid communication with the dirt air inlet and an air outlet fluidly upstream of the clean air outlet; a multi-layer filtration stage provided within the debris removal assembly body, and comprising; a louvered exhaust grill comprising a generally cylindrical body having a plurality of louvers extending longitudinally relative to the central axis between upper and lower ends of the generally cylindrical body and forming air flow openings therebetween; a mesh screen disposed radially outwardly from the louvers relative to the central axis; and a multi-layer filter mounted within the louvered exhaust grill, fluidly downstream of the air flow openings, and comprising multiple layers of filtration material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification