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US 6,308,374 B1Granted
Air filtering self-propelled upright vacuum cleaner
AssigneeWhite Consolidated Industries, Inc.
InventorsVincent L. Bobrosky, Richard J. Eisenmenger, John A. Huebsch, Christer T. Kontio, Joseph L. Mulcahy, William R. Reimer, Timothy P. Toohill
Life of this patent
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Abstract
Disclosed is a unique and novel air filtering, self-propelled upright vacuum cleaner. The filtration system utilizes a HEPA-rated air filter as a final filtering element. The disclosed vacuum cleaner contains numerous other features including a self-propelled drive mechanism.
Claims1
A vacuum cleaner comprising
- a lower base enclosure having a first suction chamber in contact with a floor to be cleaned,
- an upper enclosure having internal walls dividing said upper enclosure into a second suction chamber, an exhaust chamber, and a motor chamber;
- a drive module having a drive motor in said lower base enclosure, at least said drive motor being encased in a shroud;
- and
- said drive module shroud defining a sealed air flow passage around said drive motor, said shroud being in fluid communication with said second suction chamber
- wherein said sealed air flow passage includes a duct between said drive module shroud and said first suction chamber, and wherein the vacuum cleaner further includes a passage between said first suction chamber and said second suction chamber.
3 more elements
Dependencies are inferred from the claim text.