Vacuum cleaner with improved suction inlet
Patent 5699586 Issued on December 23, 1997. Estimated Expiration Date: 
January 11, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
January 11, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventorsAssigneeApplicationNo. 584846 filed on 01/11/1996US Classes:15/383, Rotary agitator15/377, Auxiliary or separate, i.e., non-fan, driving motor15/415.1NozzleExaminersPrimary: Scherbel, David A.Assistant: Till, Terrence R. Attorney, Agent or FirmInternational ClassesA47L 005/10A61K 005/26 AbstractA vacuum cleaner with a floor traveling head having a housing, a rotatable brush, and two motors. The housing has a suction inlet with an entrance at its bottom and a separate pocket in the bottom of the housing for the rotatable brush. A wall of the housing separates the pocket from the suction inlet such that the entrance to the suction inlet has a relatively small area to maximize vacuum pull at the entrance. The suction inlet has a lower section with straight wall sections that are angled to form smaller areas at the lateral ends of the suction inlet. The suction inlet has an exit aperture directly into a collection assembly such that air velocity increases from the lower section to the upper section and then decreases from the upper section into the collection assembly.Field of SearchWith liquid or other cleaning material application to workWith dust or dirt handling or storing or separating, e.g., filter bags With receiver for dirt from rotary or moving agitator With mechanical agitating means Auxiliary or separate, i.e., non-fan, driving motor Rotary agitator Oblique or V-shaped arrangement of agitator With auxiliary ambient air inlet to nozzle, e.g., through air tunnel and/or agitator Motor features, e.g., housing or casing assemblies Nozzle | |
