Upright-type electric vacuum cleaner
Patent 4893376 Issued on January 16, 1990. Estimated Expiration Date: 
December 21, 2008. 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.
December 21, 2008. 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 References 2806242 2867833 3300806 Multi-motor suction cleaner construction Above-the-floor adaptor for upright vacuum cleaner Upright type electric cleaner Patent #: 4446594 InventorsAssigneeApplicationNo. 287274 filed on 12/21/1988US Classes:15/337, By insertion or attachment of additive converter15/334Floor nozzle air flow diverted to off-floor cleaning meansExaminersPrimary: Moore, Chris K.Attorney, Agent or FirmInternational ClassA47L 005/32Foreign Application Priority Data1985-09-20 JPAbstractDisclosed is an upright-type electric vacuum cleaner which comprises a suction port body provided with a rotary brush and a main body case supported tiltably on the suction port body. Improvements are made in details such as the arrangement for supporting the main body case in the suction port body, the arrangements of mounting a handle onto the main body case, the configuration of a main body duct, the arrangement of a rotary brush, the arrangement of a cover of the main body case, and the arrangement of a T-shaped joint for connecting the main body duct and a dust filter means, thereby increasing the strength and rigidity of each of these parts and improving the performance of the vacuum cleaner. | |
