Cleaning machine including removable recovery tank
US5655254A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 1995 |
| Grant date | Aug 12, 1997 |
| Priority date | — |
| Expiry date | Apr 28, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L11/30
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A cleaning machine is provided with a recovery tank for containing recovered liquid from a floor or other surface that is being cleaned. The recovery tank has a chamber that houses the recovered liquid and within the chamber are a recovery inlet and a vacuum conduit. The recovery inlet carries the recovered fluid for discharge into the chamber and the vacuum conduit is used in creating a desired vacuum to cause the recovered liquid to be drawn into the chamber. The recovery tank is disposed on a cleaning tank for containing a liquid cleaning solution that is applied to the surface for cleaning purposes. The recovery tank covers an access opening in the cleaning tank for receipt of the liquid cleaning solution. A vacuum motor produces the vacuum and is located next to the cleaning tank below the recovery tank. Sealing members insure a proper seal at the junctions for the recovered liquid and the vacuum when the removable tank is joined to the cleaning tank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.