Carpet cleaner
US6131240A · kind A · utility
20Cited by
15References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 12, 1999 |
| Grant date | Oct 17, 2000 |
| Priority date | — |
| Expiry date | Feb 12, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L11/4058
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A cleaning machine is disclosed having an adjustment apparatus that allows a selected cleaning depth to be maintained, even where the cleaning apparatus has been raised to facilitate transport of the cleaning machine from one area to be cleaned to another. The adjustment apparatus therefore eliminates the need to reset the cleaning depth where the carpet being cleaned is of the same depth as the last area that was cleaned. The disclosed cleaning machine also features a vacuum housing having an integral seal, which provides for a more reliable seal, and simplifies assembly of the housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.