Method of cleaning hard surface flooring with portable liquid-recycling liquid-reusing cleaning system
US11317777B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 2020 |
| Grant date | May 3, 2022 |
| Priority date | — |
| Expiry date | Mar 25, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L11/4083
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
The method may include putting fresh cleaning liquid in the trolley bucket assembly bucket and the vacuum recovery tank; and, while propelling the system across hard surface flooring: dispensing fresh cleaning liquid from the bucket onto flooring by adjusting the spigot; spreading fresh cleaning liquid on flooring with the liquid spreader assembly; and vacuuming soil and cleaning liquid from flooring into the tank with the squeegee head assembly. The method may further include, when a desired amount of cleaning liquid has been dispensed from the bucket, or a desired amount of cleaning liquid has been vacuumed into the tank: stopping dispensing of cleaning liquid from the bucket; stopping propelling of the system; and transferring a desired amount of cleaning liquid from the tank to the bucket via the cleaning liquid transfer outlet. In addition, the method may include resuming propelling the system across flooring while also: dispensing; spreading; and vacuuming.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.