Fluid recovery device
US7059013B2 · kind B2 · utility
30Cited by
11References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2002 |
| Grant date | Jun 13, 2006 |
| Priority date | — |
| Expiry date | May 19, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L11/4044
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An apparatus and method for extracting soiled cleaning solution from carpets and other surfaces utilizing a low-profile pick-up head is disclosed. The apparatus includes a vacuum chamber or enclosed space positioned in a fluid recovery device to provide a uniform vacuum along the entire width of the device. Also disclosed is a low-profile push-pull fluid recovery device which includes a positive pressure chamber and a vacuum chamber in the push-pull head to distribute positive and vacuum pressures, respectively, along the width of the push-pull head. Methods for using such pick-up heads are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.