Floor scrubber apparatus with vacuum motor protection
US11889961B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 2021 |
| Grant date | Feb 6, 2024 |
| Priority date | — |
| Expiry date | Mar 9, 2042 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L11/4083
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A walk-behind floor microscrubber apparatus. The microscrubber includes as main subassemblies an upright handle assembly pivotally connected to a base assembly. The handle assembly includes components for recovering a cleaning solution applied to the floor during cleaning operations. The base assembly houses electrically powered motors for driving scrubbing brushes, and a clean solution reservoir. Spent cleaning solution applied to the floor is sucked to a recovery tank on the handle assembly. The microscrubber has features for avoiding vacuum motor flooding, including a specially-shaped recovery tank. Chambers in the recovery tank capture used cleaning solution when the handle assembly is tilted, thereby reducing the likelihood of solution travelling back to the vacuum motor. The microscrubber also has an exoskeleton reserve tank in the handle assembly. The exoskeleton reserve tank serves as a reserve “backup,” to the chambered recovery tank, offering redundant protection against flooding to the vacuum motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.