Combination sweeping-scrubbing apparatus
Patent 4041567 Issued on August 16, 1977. Estimated Expiration Date: 
August 16, 1994. 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.
August 16, 1994. 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 2476526 2987741 3019462 3197798 3701177 3833961 3879789 Scrubbing machine Patent #: 3938212 InventorAssigneeApplicationNo. 05/566980 filed on 04/10/1975US Classes:15/320, With liquid or other cleaning material application to work15/340.3, Including brush15/349, With receiver for dirt from rotary or moving agitator15/353, With liquid and/or deflection type separator15/366, Rotary only, e.g., "Hoover" type beating brush15/373, Retractable, i.e., selective use15/50.1, Scrubber15/50.3, Cylindrical brush15/83CollectorExaminersPrimary: Moore, Christopher K.Attorney, Agent or FirmAbstractA machine for cleaning a surface is provided. The machine includes a forward drum brush unit designed primarily for sweeping and a rear disc brush unit designed primarily for scrubbing. Squeegees are located behind the disc brushes. Cleaning solution is supplied between the drum brush and the disc brushes and is directed toward the drum brush to achieve a wet sweeping action thereby. The disc brushes are mounted for movement toward and away from the surface to be cleaned and are engagable with the surface under controllable pressure. The drum brush is mounted on a separate frame and is engagable by the disc brush unit so that it can be raised for transportation purposes when the disc brush unit is raised. The squeegees can be raised independently of the brushes. | |
