Upright extraction cleaning machine
US6131237A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 13, 1998 |
| Grant date | Oct 17, 2000 |
| Priority date | — |
| Expiry date | Aug 13, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D2111/46
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A portable surface cleaning apparatus comprises a base module for movement along the surface; an upright handle pivotally attached to the base module; a fluid dispensing system including at least one fluid supply tank mounted to the handle or the base module, a dispensing nozzle mounted to the base module for applying a cleaning fluid to a surface to be cleaned, and a heater for heating the fluid to be applied to the surface to be cleaned to a temperature less than boiling; a fluid recovery tank mounted to the handle or the base module for holding recovered fluid; a suction nozzle associated with the base module; a working air conduit extending between the recovery tank and the suction nozzle; and a vacuum source and fluid communication with the recovery tank for generating a flow of working air from the suction nozzle through the working air conduit and through the recovery tank to thereby recovering fluid from the surface to be cleaned through the suction nozzle and working air conduit and into the recovery tank. A method for cleaning a surface in which a fluid cleaning solution is contained in a tank and dispensed on the surface through a nozzle and the cleaning solution is reco…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.