Cleaning of surfaces
Patent 6804856 Issued on October 19, 2004. Estimated Expiration Date: 
March 16, 2021. 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.
March 16, 2021. 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 3204271 3402420 Carpet cleaning device Device for cleaning surfaces Cleaning attachment Electric vacuum cleaner having steam discharge and cloth wiper Extraction cleaning machine with cleaning control Patent #: 6446302 InventorAssigneeApplicationNo. 10239008 filed on 03/16/2001US Classes:15/302, With liquid or other cleaning material application to work15/320, With liquid or other cleaning material application to work15/1.51, ELECTROSTATIC CLEANING15/321, Manipulatable nozzle with flexible conduit connection to portable power and/or material supply unit, e.g., window washer15/322, Nozzles15/319With automatic controlExaminersPrimary: Gulakowski, RandyAssistant: Chaudhry, Saeed Foreign Patent References
International ClassesA47L 904A47L 11202 A47L 1134 AbstractApparatus for cleaning a surface, comprising brush means including a body (16) which carries bristles (17) engageable with the surface; means for effecting movement of the bristles relative to the surface, to provide an agitating cleaning action thereon; said bristle-carrying body further being provided with steam delivery means (20, 21) for applying steam to said surface in a region thereof engaged by said bristles. The apparatus may be for cleaning a conveyor belt (10), with the brush in the form of a drum (16) rotatable about an axis (18) parallel to the conveyor belt with the steam passing through the drum and emerging through peripheral apertures (21), the brush being disposed within a hood (15) with an extraction system for loosened dirt and water. | |
