Vacuum cleaner with all components in floor traveling head
Patent 5671499 Issued on September 30, 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. 584651 filed on 01/11/1996US Classes:15/339, Combined, e.g., with signal or indicator15/377, Auxiliary or separate, i.e., non-fan, driving motor15/412Motor features, e.g., housing or casing assembliesExaminersPrimary: Scherbel, David A.Assistant: Till, Terrence R. Attorney, Agent or FirmForeign Patent References
International ClassA47L 009/28AbstractA vacuum cleaner having a floor traveling head with wheels and an elongate handle pivotably connected to the head. The head has two motors; one connected to an impeller and one connected to a rotatable brush. The head has rechargeable batteries therein for supplying electricity to the motors and a three position electrical switch. All working components of the vacuum cleaner, including an air filter and dust/dirt collection cup, are in the floor traveling head. The handle has no working components thereon.Field of SearchWith dust or dirt handling or storing or separating, e.g., filter bagsWith receiver for dirt from rotary or moving agitator Handle movable relative to floor tool air exhaust conduit Separator element cleaning in situ and/or storage or removal of retained dirt With mechanical agitating means Auxiliary or separate, i.e., non-fan, driving motor Rotary agitator Motor features, e.g., housing or casing assemblies Combined, e.g., with signal or indicator Hand supported and manipulated, e.g., miniature or upholstery type | |
