Apparatus for treating floor coverings
US3964925A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 1, 1974 |
| Grant date | Jun 22, 1976 |
| Priority date | — |
| Expiry date | Jul 1, 1994 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L11/4088
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
Apparatus for cleaning carpets is provided. The apparatus includes a nozzle for applying liquid such as water to the carpet and also includes air nozzles or openings for drying the carpet. Specifically, a vacuum nozzle is employed to pull in air and water from the carpet, with a hose connecting the vacuum nozzle to a vacuum tank which is associated with a vacuum blower. An exhaust air nozzle or opening is positioned near the vacuum nozzle, with a hose connecting this nozzle to an exhaust outlet associated with the vacuum blower. The vacuum nozzle and the exhaust air nozzle or opening are positioned so that warm exhaust air from the vacuum blower is emitted from the exhaust air nozzle or opening, passes at least partly through the carpet, and is at least partly returned with water through the vacuum nozzle to the tank. In one form, the exhaust air nozzle or opening can be opened and closed remotely through suitable linkages. The liquid nozzle is located in a plenum chamber associated with the exhaust air nozzle or opening and is directed toward the carpet through an exhaust air opening in the chamber. A valve controls flow of liquid to the liquid nozzle and in one form this valve is…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.